阅读说明：本技术 锁斗系统运行控制系统及方法 (Operation control system and method for bucket locking system ) 是由 李志祥 陈峻贤 周鹏 余建良 刘泽 高志刚 代厚鑫 毛兆锋 贾磊 于 2020-06-22 设计创作，主要内容包括：本发明提供一种锁斗系统运行控制方法,属于锁斗控制领域。所述方法包括：获取所述锁斗系统运行过程中的运行参数；根据所述运行参数判断所述锁斗系统的当前工况；基于所述锁斗系统的当前工况,对所述锁斗顺控系统以及所述锁斗系统中的相关执行机构的运行状态进行调整。本发明提供的控制方法,实时监视锁斗系统的运行工况,当锁斗系统出现故障时,判断故障工况并根据工况类型对锁斗顺控系统及锁斗系统中的相关执行机构的运行状态进行调整,提高了锁斗系统的自动化和安全性能。(The invention provides an operation control method of a lock hopper system, and belongs to the field of lock hopper control. The method comprises the following steps: acquiring operation parameters of the lock hopper system in the operation process; judging the current working condition of the bucket locking system according to the operation parameters; and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system. The control method provided by the invention can monitor the operation condition of the lock hopper system in real time, judge the fault condition when the lock hopper system has a fault, and adjust the operation states of the lock hopper sequence control system and the relevant actuating mechanisms in the lock hopper system according to the type of the condition, thereby improving the automation and the safety performance of the lock hopper system.)

1. A method for controlling the operation of a bucket locking system, wherein the operation state of each actuating mechanism in the bucket locking system is controlled by a bucket locking sequence control system according to preset time sequence parameters, is characterized by comprising the following steps:

acquiring operation parameters of the lock hopper system in the operation process;

judging the current working condition of the bucket locking system according to the operation parameters;

and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system.

2. The method according to claim 1, characterized in that said operating parameters comprise at least: the system comprises liquid level height information in liquid storage equipment in the lock hopper system, pressure information in high-pressure equipment in the lock hopper system and overflowing liquid flow information in a pipeline of the lock hopper system.

3. The method of claim 1, wherein said determining a current operating condition of the lock hopper system based on the operating parameter comprises:

for each operation parameter, calculating a parameter change value in the operation process of the lock hopper system according to operation parameter values at different moments;

and judging whether the lock hopper system is in an abnormal working condition or not according to a comparison result of the parameter change value and a preset safety value.

4. The method according to claim 1 or 3, wherein the preset timing parameters and preset safety values are updated according to the type of the lock hopper system's slag discharge.

5. The method of claim 1, wherein the adjusting the operational status of the lock hopper sequence control system and associated actuators in the lock hopper system based on the current operating condition of the lock hopper system comprises:

when the locking system is in an abnormal working condition, the locking sequence control system is triggered to stop, each actuating mechanism in the locking system is controlled to be switched to a preset safety position, and an alarm prompt is triggered.

6. The utility model provides a lock system operation control system of fighting, the running state of each actuating mechanism in the lock system of fighting is controlled according to predetermineeing the time sequence parameter by lock in the same direction as accuse system, its characterized in that, the system includes:

the sensor unit is used for acquiring operation parameters in the operation process of the lock hopper system;

the control unit is in signal connection with the sensor unit, the lock hopper sequential control system and the actuating mechanisms and is used for:

judging the current working condition of the bucket locking system according to the operation parameters;

and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system.

7. The system of claim 6, wherein the sensor unit comprises:

the pressure sensor is arranged corresponding to the high-voltage equipment in the lock hopper system and used for acquiring pressure information in the high-voltage equipment corresponding to the lock hopper system;

the liquid level sensor is arranged corresponding to the liquid storage equipment in the lock hopper system and is used for acquiring liquid level height information in the liquid storage equipment corresponding to the lock hopper system;

and the flow sensor is arranged corresponding to the pipeline of the lock hopper system and is used for acquiring the flow information of overflowing liquid in the corresponding pipeline in the lock hopper system.

8. The system of claim 6, wherein the control unit comprises:

the communication unit is used for receiving the operation parameters acquired by the sensor unit and sending a control instruction to the lock hopper sequential control system and each actuating mechanism;

and the logic judgment unit is used for judging the current working condition of the lock hopper system according to the operation parameters and generating a corresponding control instruction according to the current working condition of the lock hopper system.

9. The system of claim 6, wherein the logic judgment unit is configured to generate a parking control command, a safety control command and an alarm command when the lock hopper system is in an abnormal condition;

the communication unit is used for sending the parking control instruction to the locking sequence control system, sending the safety control instruction to each executing mechanism and sending the alarm instruction to an alarm unit;

the system also comprises the alarm unit which is used for generating an alarm prompt according to the alarm instruction.

10. A computer-readable storage medium having stored thereon instructions which, when executed on a computer, cause the computer to execute the lock hopper system operation control method according to any one of claims 1 to 5.

Technical Field

The invention relates to the field of lock hopper control, in particular to a lock hopper system operation control system and a lock hopper system operation control method.

Background

With the technical development, most coal gasification devices in China are in the international leading level, but the coal gasification devices still stay in the primary stage in the aspect of intellectualization, and in the process of coal gasification, especially coal water slurry gasification, problems of pipeline blockage, valve jam, serious abrasion and leakage of pipeline equipment and the like are often exposed in the practical production process of a bucket locking system for slag collection and slag discharge of a gasification furnace due to the influence of the intrinsic factor coal quality, but the problems are difficult to find through automatic detection of the system, maintenance personnel are required to check bucket locking pipelines and valves of the bucket locking system one by one after the system is in a fault shutdown state to find fault sources, the bucket locking operation system seriously restricts the long-period safe and stable operation of the production system, and therefore the bucket locking sequence control system needs to be optimized and lifted.

Disclosure of Invention

The invention aims to provide a method for controlling the operation of a lock hopper system, which at least solves the problem that an effective interlocking control means cannot be adopted in time when an emergency fault occurs in the operation of the lock hopper system.

In order to achieve the above object, a first aspect of the present invention provides an operation control method for a lock hopper system, where an operation state of each actuator in the lock hopper system is controlled by a lock hopper sequence control system according to a preset time sequence parameter, the method including: acquiring operation parameters of the lock hopper system in the operation process; judging the current working condition of the bucket locking system according to the operation parameters; and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system.

Preferably, the operating parameters include at least: the system comprises liquid level height information in liquid storage equipment in the lock hopper system, pressure information in high-pressure equipment in the lock hopper system and overflowing liquid flow information in a pipeline of the lock hopper system.

Preferably, the determining the current working condition of the lock hopper system according to the operating parameters includes: for each operation parameter, calculating a parameter change value in the operation process of the lock hopper system according to operation parameter values at different moments; and judging whether the lock hopper system is in an abnormal working condition or not according to a comparison result of the parameter change value and a preset safety value.

Preferably, the preset time sequence parameter and the preset safety value are updated according to the slag discharge type of the lock hopper system.

Preferably, the operation states of the lock hopper sequence control system and the relevant executing mechanisms in the lock hopper system are adjusted based on the current working condition of the lock hopper system, and the method includes triggering the lock hopper sequence control system to stop when the lock hopper system is in an abnormal working condition, controlling each executing mechanism in the lock hopper system to be switched to a preset safe position, and triggering an alarm prompt.

A second aspect of the present invention provides an operation control system for a bucket locking system, in which an operation state of each actuator in the bucket locking system is controlled by a bucket locking sequence control system according to a preset time sequence parameter, the system including: the sensor unit is used for acquiring operation parameters in the operation process of the lock hopper system; the control unit is in signal connection with the sensor unit, the lock hopper sequential control system and the actuating mechanisms and is used for: judging the current working condition of the bucket locking system according to the operation parameters; and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system.

Preferably, the sensor unit includes: the pressure sensor is arranged corresponding to the high-voltage equipment in the lock hopper system and is used for acquiring pressure information in the corresponding high-voltage equipment; the liquid level sensor is arranged corresponding to the liquid storage equipment in the lock hopper system and is used for acquiring liquid level height information in the corresponding liquid storage equipment; and the flow sensor is arranged corresponding to the pipeline of the lock hopper system and is used for acquiring the flow information of the overflowing liquid in the corresponding pipeline.

Preferably, the control unit includes: the communication unit is used for receiving the operation parameters acquired by the sensor unit and sending a control instruction to the lock hopper sequential control system and each actuating mechanism; and the logic judgment unit is used for judging the current working condition of the lock hopper system according to the operation parameters and generating a corresponding control instruction according to the current working condition of the lock hopper system.

Preferably, the logic judgment unit is used for generating a parking control instruction, a safety control instruction and an alarm instruction when the lock hopper system is in an abnormal working condition; the communication unit is used for sending the parking control instruction to the locking sequence control system, sending the safety control instruction to each executing mechanism and sending the alarm instruction to an alarm unit; the system also comprises the alarm unit which is used for generating an alarm prompt according to the alarm instruction.

In another aspect, the present invention provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to execute the lock hopper system operation control method as described above.

According to the technical scheme, the lock hopper sequence control system controls the operation states of all actuating mechanisms of the lock hopper system, such as a gasification furnace slag discharge valve, a gasification furnace safety valve, a lock hopper water replenishing tank and the like according to preset time sequence parameters, the slag collecting and discharging process of the lock hopper system is circulated, the operation working condition of the lock hopper system is monitored in real time, when the lock hopper system breaks down, the fault working condition is judged, the operation states of the lock hopper sequence control system and relevant actuating mechanisms in the lock hopper system are adjusted according to the working condition types, such as triggering the lock hopper system to stop, and the relevant actuating mechanisms are controlled to be switched to preset safety positions.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

FIG. 1 is a schematic view of a bucket locking system according to an embodiment of the present invention;

fig. 2 is a flowchart of an operation control method of a bucket locking system according to an embodiment of the present invention;

fig. 3 is a block diagram of an operation control method of a bucket locking system according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a lock hopper system having an integrated wear resistant tapered liner disposed within the lock hopper in accordance with an embodiment of the present invention;

fig. 5 is a schematic flow chart of a lock bucket system in which a slag scour prevention plate is disposed in a lock bucket according to an embodiment of the present invention.

Description of the reference numerals

1901-gasifier chilling chamber, 1902-lock bucket, 1903-lock bucket water supplementing tank, 1904-lock bucket auxiliary slag collecting pump, 1911-gasifier safety valve, 1912-gasifier slag discharging valve, 1913-lock bucket slag discharging valve, 1914-lock bucket auxiliary slag discharging valve, 1915-lock bucket auxiliary slag collecting pump inlet valve, 1916-lock bucket auxiliary slag collecting pump circulating valve, 1917-lock bucket pressure releasing valve, 1918-lock bucket pressure charging valve, 1919-lock bucket pre-charging valve, 1920-gasifier back flushing valve, 1922-gasifier water discharging cut-off valve, 1930-wear-resistant sleeve, 1931-lock bucket pyramid wear-resistant sleeve, 1932-lock bucket slag discharging opening wear-resistant sleeve, 1933-anti-scouring lining.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Fig. 1 shows a lock hopper system architecture according to an embodiment of the present invention, where the lock hopper system includes a gasifier chilling chamber 1901, a lock hopper 1902, a lock hopper water replenishing tank 1903, and a lock hopper auxiliary slag collecting pump 1904, a slag discharge pipe of the gasifier chilling chamber 1901 is connected to a slag inlet pipe of the lock hopper 1902, a water inlet pipe of the lock hopper 1902 is connected to a water outlet pipe of the lock hopper water replenishing tank 1903, a pipeline connected to a pipeline at the top of the lock hopper 1902 is disposed at the top of the lock hopper 1902, and a pipeline connected to the lock hopper auxiliary slag collecting pump 1904 is further disposed at the top of the lock hopper 1902;

the lock hopper system further comprises a gasifier safety valve 1911, a gasifier slag discharge valve 1912, a lock hopper slag discharge valve 1913, a lock hopper auxiliary slag discharge valve 1914, a lock hopper auxiliary slag collection pump inlet valve 1915, a lock hopper auxiliary slag collection pump circulating valve 1916, a lock hopper circulation flow meter 1921, a lock hopper pre-charging valve 1919, a lock hopper pressure release valve 1917, a lock hopper charging valve 1918, a gasifier back flushing valve 1920 and a gasifier water discharge stop valve 1922, wherein the gasifier safety valve 1911 and the gasifier slag discharge valve 1912 are arranged on a slag discharge pipe between the gasifier chilling chamber 1901 and the lock hopper 1902, the lock hopper slag discharge valve 1913 is arranged on a slag discharge pipe at the bottom of the lock hopper 1902, the lock hopper auxiliary slag discharge pipe 1914 is arranged on a water inlet pipe between the lock hopper 1902 and the lock hopper water supplement tank 1903, the lock hopper auxiliary slag collection pump inlet valve 1915 is arranged on a water outlet pipe between the lock hopper 1902 and the lock hopper auxiliary slag collection pump 1904, and the lock hopper auxiliary slag collection pump 1916 is connected in parallel to the lock hopper auxiliary slag collection pump 1904, the lock-bucket circulation flow meter 1921 is arranged on a water inlet pipe of the lock-bucket auxiliary slag collection pump 1904 and the gasifier chilling chamber 1901, the funnel pre-charging valve 1919 is arranged on a gas inlet pipe between the lock bucket 1902 and pre-charging equipment, the lock-bucket pressure release valve 1917 is arranged on a pipeline between the lock bucket 1902 and the lock-bucket water charging tank 1903, the lock-bucket pressure charging valve 1918 is arranged on a gas inlet pipe between the lock bucket 1902 and charging equipment, the gasifier backwashing valve 1920 is connected with the gasifier slag discharge valve 1912 in series and then connected with the lock-bucket pressure charging valve 1918 in parallel, and the gasifier drainage cut-off valve 1922 is arranged on a water outlet pipe between the gasifier chilling chamber 1901 and a flash system.

Preferably, as shown in fig. 4, a wear-resistant sleeve 1930 is lined between the bottom of the cone of the lock hopper 1902 and the slag discharge valve 1913 of the lock hopper, the wear-resistant sleeve 1930 comprises a wear-resistant sleeve 1931 on the cone of the lock hopper and a wear-resistant sleeve 1932 on a slag discharge port of the lock hopper, and the wear-resistant sleeve 1930 extends to the starting point of the cone of the whole lock hopper, so that the cone of the lock hopper and the slag discharge port are protected, erosion of solid particle slag on the inner wall of the lock hopper is avoided, and the long-term stability of the. And the lock hopper is internally provided with a slag buffer plate to solve the problem that the bottom of the cone of the existing lock hopper is frequently blocked, so that only a small part of slag discharged to the lock hopper by the gasification furnace is accumulated on the cone part of the lock hopper, when the lock hopper discharges slag, the lock hopper assists in opening the slag discharge valve 1914, the slag on the slag buffer plate is flushed to the cone part of the lock hopper by low-pressure grey water and is discharged to a slag pool, and the probability of blocking slag at the bottom of the cone of the lock hopper is greatly reduced.

As shown in fig. 2, the present invention provides an operation control method for a lock hopper system, wherein the operation state of each actuator in the lock hopper system is controlled by a lock hopper sequence control system according to a preset time sequence parameter, the preset time sequence parameter is preferably adjustable according to the slag discharge type of the lock hopper system, different time sequence instructions are executed for different slag discharge types, and the time sequence parameter corresponding to the slag discharge type is input to a control unit before the lock hopper system operates, so as to ensure the operation efficiency of the system, and the method comprises:

step S10 is to lock the bucket 1902 to prepare slag collection, to lock the bucket 1902 to be pressurized, to obtain the real-time pressure PT1906 in the gasifier chilling chamber 1901 collected by the gasifier chilling chamber 1901 pressure sensor and the real-time pressures PT1911 and PT1912 at two monitoring points in the bucket 1902 collected by the two pressure sensors, respectively, and to calculate the difference between the pressure in the gasifier chilling chamber 1901 and the pressure in the bucket 1902 according to the collected pressure information, to obtain the pressure difference PDT1902 between the gasifier chilling chamber 1901 and the bucket 1902.

Specifically, the gasifier chilling chamber 1901 is kept in a high-pressure environment in a working state, and in the slag collecting process, a channel between the gasifier chilling chamber 1901 and the lock hopper 1902 needs to be opened, if the lock hopper 1902 is kept at a normal pressure, the pressure difference between the lock hopper 1902 and the gasifier chilling chamber 1901 will be very large, slag collection is performed under such a large pressure difference, and a major safety accident is easily caused, so before slag collection, the lock hopper 1902 needs to be pressurized, and slag collection can not be performed until the pressure in the lock hopper 1902 is close to the pressure in the gasifier chilling chamber 1901.

During the pressurization process of the lock bucket 1902, the lock bucket pre-charging valve 1919 is kept open, preferably, when two pressure monitoring points in the lock bucket 1902 detect that the pressure of the lock bucket 1902 reaches 1MPa, the lock bucket pre-charging valve 1919 is closed to complete the pre-charging of the lock bucket 1902, and then the lock bucket charging valve is opened until the pressure of the lock bucket 1902 is completely charged. In the pressurizing process, pressure sensors of two pressure monitoring points in the lock bucket 1902 acquire pressure information in the lock bucket 1902 in real time and transmit the pressure information to the control unit, and the control unit obtains the pressure difference between the gasifier chilling chamber 1901 and the lock bucket 1902 by performing difference operation on the pressure information in the lock bucket 1902 and the pressure information in the gasifier chilling chamber 1901 acquired by the pressure sensors in the gasifier chilling chamber 1901.

In the embodiment of the present invention, two pressure detection points exist in the lock bucket 1902, and the two pressure detection points are distributed at different positions in the lock bucket 1902, so as to avoid deviation between the obtained pressure information and the actual pressure information in the lock bucket 1902 due to the pressure sensor being squeezed by a large solid slag, so as to cause interference in the control unit when determining the operation condition of the lock bucket 1902 system, and the two pressure detection points simultaneously monitor the pressure in the lock bucket 1902, so as to ensure the accuracy of the pressure information in the lock bucket 1902. Before the lock-bucket pressurizing valve 1918 is opened, the lock bucket 1902 is pre-pressurized, so that the pressurizing process can be completed quickly, the duration of the pressurizing process of the lock bucket 1902 of the invention is greatly shortened compared with the pressurizing process of the existing lock-bucket system, the back pressure time of the slag discharge valve 1912 of the gasification furnace is reduced, the maintenance period of the valve is prolonged, the online stable operation rate of the valve is improved, the abrasion of the grey water to the pipeline in the process from a high-pressure area to a low-pressure area is slowed down, and the safe and stable operation of the lock-bucket system is facilitated.

Step S11 compares the obtained pressure information inside the lock bucket 1902 with the pressure information inside the gasifier quench chamber 1901 and the pressure difference between the lock bucket 1902 and the gasifier quench chamber 1901, determines whether the pressure charging of the lock bucket 1902 is completed according to the determination result, and adjusts the operation state of the lock bucket system under the condition that the pressure charging of the lock bucket 1902 is completed.

In one possible embodiment, as shown in fig. 3, in order to ensure smooth and safe slag collection of the lock bucket 1902, the lock bucket 1902 needs to be pressurized to a level close to the pressure in the gasifier quench chamber 1901, preferably, the pressure in the lock bucket 1902 is close to the pressure in the gasifier quench chamber 1901, and the pressure difference is 200kPa to 300kPa, when PDT1902 < 200kPa and | PT1911 to PT1906| <0.3mpa (g) and | PT1912 to PT1906| <0.3mpa (g) are determined, it is verified that the pressurization of the lock bucket 1902 is completed, and slag collection of the lock bucket 1902 can be performed, and the control unit controls to close the lock bucket 1902 pressurizing valve, open the gasifier slag discharge valve 1912, open the lock bucket 1902 auxiliary slag collection pump inlet valve, close the lock bucket 1902 auxiliary slag collection pump 1916, and start slag collection of the lock bucket 1902.

Step S12, when slag is collected and the interlock is in a non-bypass state, the control unit receives system operation information acquired by a liquid level sensor of a chilling chamber 1901 of the gasification furnace and a flow sensor of a circulation pipeline of a lock hopper 1902 at regular intervals, and calculates and judges operation information obtained at different moments to obtain an absolute value of hundred-millisecond change rate of the liquid level of the chilling chamber of the gasification furnace, | Delta LT1093/100ms |, an accumulated descending liquid level Delta LT1093 of the chilling chamber of the gasification furnace, an absolute value of the change rate of the circulation rate of the lock hopper, | Delta FT1921/100ms |, a change amount of the circulation rate of the lock hopper Δ FT1921 and an analog quantity AQ1912 of a slag discharging valve of the gasification furnace; specifically, during slag collection, the slag discharge pipe from the gasifier quench chamber 1901 to the lock bucket 1902 and the lock bucket 1902 circulation pipe are opened, and as slag water in the gasifier quench chamber 1901 is discharged into the lock bucket 1902, the liquid level in the gasifier quench chamber 1901 starts to fall and the liquid level in the lock bucket 1902 starts to rise. Preferably, the control unit is configured with a hundred millisecond logic arithmetic unit, the liquid level sensor in the gasifier chilling chamber 1901 collects liquid level information of the gasifier chilling chamber 1901 once at intervals of fixed preset time, the fixed preset time is preferably 5-10s, and difference value operation is performed on the liquid level information in the time period:

LT1093_n-LT1093_m＝△LT1093

wherein: LT1093_nThe liquid level height in the chilling chamber 1901 of the gasification furnace at the moment n, wherein n is a positive integer; LT1093_mThe time m is the height of the liquid level in the gasifier chilling chamber 1901, m is a positive integer, n-m is 5-10, and △ LT1093 is the accumulated descending liquid level in the gasifier chilling chamber 1901 in the 5-10 s.

Specifically, as slag water in the gasifier quench chamber 1901 continues to flow to the lock hopper 1902, the slag water discharge rate in the gasifier quench chamber 1901 may slowly decrease or sharply decrease as the pressure differential between the lock hopper 1902 and the gasifier quench chamber 1901 changes and pipe plugging may result. According to the obtained descending liquid level of the internal machine in the preset time period of the gasifier chilling chamber 1901, the liquid level change rate Delta LT1093/100ms in each 100ms in the time period is calculated, because the liquid level in the gasifier chilling chamber 1901 is in a descending trend, Delta LT1093 is a negative number, and for the convenience of judgment by a control unit, the absolute value of the change rate is preferably taken as a judgment value Delta LT1093/100 ms. In the slag collecting process, the lock hopper auxiliary slag collecting pump 1904 continuously works to convey cleaner water at the top of the lock hopper 1902 to the bottom of the gasifier to form circulation, slag discharged from the gasifier is continuously collected into the lock hopper 1902, a flow sensor is arranged on a pipeline between the lock hopper auxiliary slag collecting pump 1904 and the gasifier chilling chamber 1901, preferably, the flow sensor collects pipeline overflowing liquid flow information FT1921 once every fixed preset time, the fixed preset time is preferably 5-10s, the overflowing liquid flow information is transmitted to the control unit, and the control unit performs difference operation according to the overflowing liquid flow information in the time period:

FT1921_n-FT1921_m＝△FT1921

wherein, FT1921_nThe flow of the circulating pipeline overflowing liquid at n moments, wherein n is a positive integer; FT1921_mFor circulating the flow of liquid in the pipeline at m timesThe volume is large, m is a positive integer, n-m is 5-10, and △ FT1921 is the accumulated lock hopper circulation volume change in the time period from n to m.

Specifically, as slag water in the gasifier quench chamber 1901 continuously flows to the lock bucket 1902, and as the pressure difference between the lock bucket 1902 and the gasifier quench chamber 1901 changes and a pipeline is possibly blocked, the circulation amount of the lock bucket 1902 may change, so the control unit divides a preset time period into a 100ms according to the obtained change amount of the circulation amount of the lock bucket, calculates a liquid level change rate Δ FT1921/100ms per 100ms in the time period, and preferably takes the absolute value of the change rate as a judgment value | [ Δ FT1921/100ms | for the convenience of the control unit to judge. Preferably, the degree of opening of the gasifier slag discharge valve 1912 may be transmitted by a valve to the control unit (e.g., set to be fully open at 100% and fully closed at 0), and the control unit obtains the gasifier slag discharge valve analog AQ1912 according to the degree of opening of the gasifier slag discharge valve 1912.

Step S13, in the slag collecting engineering, the control unit compares and determines the operation parameters of the lock hopper system obtained and calculated with a preset safety value, simulates the current operation condition of the lock hopper 1902 according to the determination result, and adjusts the system operation according to the operation condition.

In a possible embodiment, as shown in fig. 3, in the slag collecting process, the control unit performs system operation abnormality judgment every time the control unit obtains and calculates the system operation parameter variation within a fixed preset time period, the preset quench chamber liquid level hundred millisecond change rate absolute value safety value is SP1, the gasifier quench chamber 1901 cumulative descending liquid level preset safety value is SP5, the lock hopper circulation volume change rate absolute value preset safety value is SP4, the lock hopper circulation volume change rate absolute value preset safety value is SP3, and the gasifier slag discharge valve analog quantity preset safety value is SP 2. Preferably, the preset safety value can be adjusted according to the slag discharge type of the lock hopper system, the control unit is input before the system starts to operate, and the control unit judges the operating condition of the system according to the preset safety value corresponding to the slag discharge type. Preferably, when the pressure difference between the pressure in the lock hopper 1902 and the pressure in the gasifier quench chamber 1901 is determined to be-160 to-250 kPa, the lock hopper circulation volume of the real-time circulation pipeline obtained by the lock hopper circulation pipeline flow sensor is 40～55m³When the change rate of the chilling chamber liquid level in hundred milliseconds is greater than SP1, preferably SP1 takes a value of 0.15% -0.3%, the change rate of the liquid level in the chilling chamber 1901 in the current preset fixed time period is suddenly changed, a slag discharge pipeline or a lock bucket circulation pipeline of the chilling chamber 1901 of the gasification furnace is likely to be blocked, when △ LT1093 is greater than SP5, preferably SP5 takes a value of 4% -8%, the circulation quantity of the lock bucket 1902 circulation pipeline is far smaller than the discharge quantity of the chilling chamber 1901 of the gasification furnace, the lock bucket circulation pipeline is likely to be blocked, if the two conditions occur, the control unit triggers the system to stop, the lock bucket sequential control system stops automatically, each control program control valve returns to the initial safe position, the lock bucket 1911 and the gasification furnace water discharge safety valve 1922 are closed immediately, and triggers an alarm unit to alarm for reminding the smooth operation of the slag collection process, the lock bucket system performs a slag collection process according to preset time sequence parameters, when the change rate of the chilling chamber liquid level in hundred milliseconds is greater than | △ LT1093/100ms | > SP1, preferably SP5 takes a value of 4% -8%, the lock bucket 1902 circulation pipeline is 4-4934, and the two conditions occur, if the change rate of the lock bucket 1902 circulation pipeline is less than 120.1921, the SP1³The SP3 takes the value of 8-12m³And h, indicating that the change rate of the circulation volume of the lock hopper has a sudden change, the change quantity of the circulation volume of the lock hopper cannot reach a preset condition value, and the circulation pipeline of the lock hopper is likely to be blocked, when the analog quantity AQ1912 of the slag discharge valve of the gasification furnace is less than SP2, preferably, the SP2 takes a value of 2% -6%, indicating that the slag discharge pipeline of the gasification furnace is likely to be blocked, if any one of the two conditions happens, the control unit triggers the system to stop, the lock hopper sequential control system stops automatic operation, each control program control valve returns to an initial safety position, and simultaneously, the lock hopper safety valve 1911 and the gasification furnace water discharge stop valve 1922 are immediately closed, and an alarm unit is triggered to alarm and remind.

In the embodiment of the invention, the lock hopper sequence control system acquires the operation parameters of the lock hopper system at fixed time intervals in the slag collecting process of the system, and can simulate whether the slag collecting of the lock hopper 1902 is abnormal in the time period through comparison operation of operation information at different moments. When the system breaks down, the control unit can output an abnormal operation parameter value, an operator can preliminarily know whether the pipeline of the chilling chamber 1901 of the gasification furnace is blocked or the circulating pipeline of the lock hopper 1902 of the gasification furnace is blocked according to the abnormal parameter value, the operator can carry out troubleshooting in a targeted manner, the troubleshooting time is saved, and the troubleshooting efficiency is improved.

Step S14 is to install the slag collecting time preset in the lock hopper system to complete the slag collection in the lock hopper 1902, and the control unit sends a timing command to control the system to start the slag discharge in the lock hopper 1902.

Specifically, the control unit controls the closing of the gasifier slag discharge valve 1912, the closing of the lock hopper auxiliary slag collection pump circulation valve 1916, and the opening of the lock hopper auxiliary slag collection pump circulation valve 1916, and stops the slag discharge of the gasifier chilling chamber 1901 and closes the lock hopper circulation pipe, so that the lock hopper auxiliary slag collection pump 1904 circulates by itself. Because the pressure in the lock bucket 1902 is close to the pressure in the gasifier chilling chamber 1901 at this time, and belongs to a high pressure, it is necessary to release the pressure in the lock bucket 1902 before the lock bucket 1902 discharges slag, so that the pressure in the lock bucket 1902 returns to the safe pressure range, after the above three valves complete the opening and closing actions, the control unit controls the lock bucket pressure release valve 1917 to open, and starts to release the pressure in the lock bucket 1902, preferably, in the pressure release process, two pressure sensors at two pressure detection points in the lock bucket 1902 continuously obtain the pressure in the lock bucket 1902, and the lock bucket pre-charging valve 1919 is controlled to open until the control unit determines that the pressure in the lock bucket 1902 reaches the safe pressure. Preferably, the safe pressure value is 0.2MPa, the pipeline where the lock hopper pre-charging pressure valve 1919 is located is filled with low-pressure grey water medium, so that the function of flushing the pressure relief pipeline of the lock hopper 1902 can be effectively achieved, the lock hopper pressure relief valve 1917 is prevented from being jammed by large-particle slag, and the flushing fixed preset time is preferably 10-30 s. After the flushing of the pressure relief pipeline of the lock bucket 1902 is completed, the control unit acquires a real-time liquid level LT1922 of the lock bucket water supplement tank 1903 acquired by a liquid level sensor in the lock bucket water supplement tank 1903, and judges the size relationship between the liquid level LT1922 and a preset lock bucket water supplement tank 1903 liquid level safety height SP7, preferably, the SP7 value is 70% -80%, when LT1922 is less than SP7, the water quantity in the lock bucket water supplement tank 1903 is insufficient, water needs to be supplemented, until the LT1922 is greater than or equal to SP7, the water quantity of the lock bucket water supplement tank 1903 meets the lock bucket deslagging condition, the control unit controls the lock bucket auxiliary deslagging valve 1914 to be opened after a preset fixed time, the preset fixed time is preferably 0-3s, the lock bucket water supplement tank 1903 supplies water into the lock bucket 1902 to help to remove slag from the lock bucket 1902, and after the preset fixed time is passed, the preset fixed time is preferably 0-3s, the control unit controls the lock bucket deslagging valve 1913 to be opened, in the process, the lock hopper 1902 starts to discharge slag, and in the process, the lock hopper auxiliary slag discharge valve 1914 is kept open, the lock hopper water supplement tank 1903 continues to supplement water into the lock hopper 1902, and the auxiliary lock hopper 1902 discharges slag. After the preset slag discharging time of the lock bucket 1902 elapses, the control unit controls the lock bucket slag discharging valve 1913 to close, and the slag discharging of the lock bucket 1902 is completed, wherein the preset slag discharging time is preferably 6-10 s.

In the embodiment of the invention, in the pressure relief process of the lock bucket 1902, some large-particle slag in the lock bucket 1902 may enter the lock bucket water supplement tank 1903 along with the pressure relief pipeline of the lock bucket 1902, and the large-particle slag may be accumulated at the position of the lock bucket pressure relief valve 1917 to cause the blockage of the lock bucket pressure relief valve 1917, so that after the pressure relief of the lock bucket 1902 is completed, the pressure relief pipeline of the lock bucket 1902 is flushed, and not only can the slag water entering the pressure relief pipeline be flushed and accumulated in the lock bucket 1902, but also the blockage of the lock bucket pressure relief valve 1917 can be effectively avoided, thereby improving the operation stability of. Before sediment begins to be arranged at lock fill 1902, carry out lock fill moisturizing and irritate 1903 liquid level inspection earlier, can avoid arranging sediment in-process lock fill moisturizing and irritate 1903 because the water yield is not enough and lead to failing to effectively erode the lock and fight collection sediment in 1902 and make lock fill 1902 arrange the sediment incomplete, lock fill moisturizing irritate 1903 in have sufficient water can help lock fill 1902 arrange sediment in-process to erode the sediment that adheres on the wall of lock fill 1902 and collect the lock fill slag discharge mouth, improve the sediment efficiency of lock fill 1902.

In step S15, after the slag discharge from the lock bucket 1902 is completed, the lock bucket 1902 starts to be pressurized again, and the slag collection and slag discharge processes of the lock bucket 1902 in steps S11-S14 are repeated to perform the cyclic automatic operation of the lock bucket system.

Specifically, after the slag discharge of the lock bucket 1902 is completed, the lock bucket slag discharge valve 1913 is closed, the lock bucket auxiliary slag discharge valve 1914 is kept open, the low-pressure grey water medium is continuously supplemented into the lock bucket 1902, the low-pressure grey water medium is supplemented for a preset fixed time, so that the lock bucket 1902 is filled with the low-pressure grey water medium, the preset fixed time is preferably 5 to 10s, after the water filling step of the lock bucket 1902 is completed, the control unit controls the lock bucket auxiliary slag discharge valve 1914 to be closed, after the control unit receives a closing signal of the lock bucket auxiliary slag discharge valve 1914, the lock bucket pressure relief valve 1917 is controlled to be closed, at this time, the lock bucket pre-charge valve 1919 is kept open, the pre-charge time is preferably 5 to 10s until the preset pre-charge time elapses, when the pressure sensors at two pressure monitoring points in the lock bucket 1902 acquire information that the pressure in the lock bucket 1902 is preferably 1.0MPa, the control unit closes the lock bucket pre-charge valve 1919 and opens the lock bucket pressure-charge valve, the lock bucket 1902 is pressurized.

In the embodiment of the present invention, after the locking bucket 1902 is pressurized, the replenishment of the grey water medium is continued until the grey water medium completely fills the locking bucket 1902, and if the locking bucket 1902 is not filled with the hard-to-compress grey water medium but has a part of the air medium which is easy to compress, the pressurization time of the locking bucket 1902 will be greatly increased, which is not favorable for the stable operation of the locking bucket 1902 system. The lock hopper 1902 is pre-pressurized before the lock hopper 1902 is pressurized, so that compared with the existing pressurizing process, especially the pressurizing time from the high pressure to the low pressure area is reduced by 20-40s, the probability of pipeline and equipment abrasion caused by solid particles separated out from the high pressure grey water is greatly reduced, and the long-term stable operation of the system is ensured.

In another possible embodiment, the condition that the lock bucket safety valve 1911 and the gasifier drain cut-off valve 1922 are immediately closed is not limited to that the lock bucket sequence control system stops the automatic operation, but the lock bucket safety valve 1911 and the gasifier drain cut-off valve 1922 are also immediately closed when the absolute value of the hundred millisecond change rate of the gasifier quench chamber liquid level is detected to be greater than the first preset value (preferably 0.3%) or the absolute value of the cumulative descending liquid level of the gasifier quench chamber is detected to be greater than the fifth preset value (preferably 6%) before the lock bucket sequence control is stopped. In addition to monitoring the slag discharge time, when the lock hopper slag discharge valve 1913 is completely opened, the lock hopper slag discharge valve 1913 is preferably automatically closed when the liquid level LT1922 of the lock hopper water supplement tank 1903 is lower than a set value, and the liquid level set value is preferably 35% -45% considering that the lock hopper slag discharge valve is large in size and slow in operation and usually requires 2-4s for closing. After the lock hopper finishes slag discharging, the closing of the lock hopper auxiliary slag discharging valve 1914 is related to the preset lock hopper water filling time, and the condition that the lock hopper is filled with low-pressure grey water medium can be verified by monitoring that the liquid level LT1922 of the lock hopper water replenishing tank 1903 is not lowered any more.

In another possible embodiment, as shown in fig. 4 or 5, an integrated wear-resistant sleeve is lined between the bottom of the lock bucket cone and the lock bucket slag discharge valve 1913, and an anti-scouring lining 1933 is arranged around the slag buffer plate, so that the problem of abrasion and leakage of the lock bucket cone and the slag discharge port in the prior art is solved. After the gasifier slag is discharged from the bottom of the lock hopper, the lock hopper slag discharging valve 1913 is closed, after a valve closing feedback signal of the lock hopper auxiliary slag discharging valve 1914 is fed back, the lock hopper pressure release valve 1917 is automatically closed, at the moment, the lock hopper control system will close the lock hopper pre-charging valve 1919 after waiting for a certain time, after the lock hopper system is charged to the low-pressure grey water pipe network pressure P1 through the valve, preferably, the value range of P1 is 0.8-1.1 MPa, the pressure signal is transmitted to a signal detector of the lock hopper pre-charging valve 1919, at the moment, the lock hopper pre-charging valve 1919 is closed, the lock hopper charging valve 1918 is opened, and then a lock hopper charging program is carried out. In the embodiment, the lock hopper pressurizing pipeline can be connected to an inlet pipeline of the lock hopper auxiliary slag collecting pump, and the scouring wear is reduced by 20-40s compared with that from high pressure to low pressure in the existing pressurizing program, so that the pipeline wearing probability is greatly reduced, and the safe long-period operation of a lock hopper system is facilitated.

In addition, the present invention also provides a system for controlling the operation of a bucket locking system, wherein the operation state of each executing mechanism in the bucket locking system is controlled by a bucket locking sequence control system according to a preset time sequence parameter, and the system comprises: the sensor unit is used for acquiring operation parameters in the operation process of the lock hopper system; the control unit is in signal connection with the sensor unit, the lock hopper sequential control system and the actuating mechanisms and is used for: judging the current working condition of the bucket locking system according to the operation parameters; and adjusting the operation states of the lock hopper sequence control system and related actuating mechanisms in the lock hopper system based on the current working condition of the lock hopper system.

Preferably, the sensor unit includes pressure sensors distributed inside the gasifier quench chamber 1901 and the lock bucket 1902, because the working environment of the gasifier quench chamber 1901 is kept at a high pressure and the slag discharge environment of the lock bucket 1902 is at a low pressure, the lock bucket 1902 needs to be charged to a high pressure of the same level as the pressure of the gasifier quench chamber 1901 before slag collection is performed in the gasifier quench chamber 1901, and in case of the similar pressure, slag water inside the gasifier quench chamber 1901 can be safely discharged into the lock bucket 1902. At least one pressure monitoring point is arranged in the gasification furnace chilling chamber 1901, and at least two pressure monitoring points are arranged in the lock bucket 1902. All pressure sensors include a communication module that sends lock bucket 1902 operating pressure information to the lock bucket control system control unit.

In the embodiment of the present invention, the pressure sensor is a high-pressure sensor, and can maintain the pressure detection accuracy in a high-pressure environment, and inside the lock bucket 1902, as the gasifier quench chamber 1901 continuously discharges slag water and enters, and the lock bucket auxiliary slag collection pump 1904 continuously circulates clean water on the upper layer of the lock bucket 1902 to the taper portion of the gasifier quench chamber 1901, and continuously washes away solid particle slag, so that more and more solid particle slag and less grey water medium are in the lock bucket 1902, and the adhesion of the solid particle slag to the inside of the lock bucket 1902 under a high-pressure condition is particularly strong, so that after the slag discharge of the lock bucket 1902 is completed, although the inner wall of the lock bucket 1902 is washed away, a small amount of solid particle slag still adheres to the inner wall of the lock bucket 1902, and if the adhered solid particle slag just adheres to the pressure detection point of the lock bucket 1902, the accuracy of the pressure detection value inside the lock bucket 1902 is likely to be affected during the pressure charging process, leading to pressure detection value failure, leading to the excessive pressure difference between the lock hopper 1902 and the gasifier chilling chamber 1901 to cause the incident of safety because of completing to pressurize in advance, or leading to the excessive pressure in the lock hopper 1902 to cause the sediment collection difficulty or the incident of safety because of excessive pressurizing. Therefore, at least two pressure monitoring points are arranged in the lock bucket 1902, when the two pressure monitoring points perform simultaneous pressure detection, and when the difference between the detection data of the two pressure monitoring points is too large, the problem that the pressure monitoring points are covered may occur, and an operator can be reminded to confirm the pressure.

Preferably, the sensor unit further comprises a liquid level sensor for acquiring liquid level height information in a liquid storage device in the lock hopper system; the liquid level sensor may be a contact sensor or a non-contact sensor, because the lock hopper water replenishing tank 1903 basically follows a static pressure condition when the lock hopper 1902 discharges slag and washes and the lock hopper 1902 replenishes water, the liquid level sensor in the lock hopper 1902 water replenishing tank is preferably a static pressure input type liquid level transmitter, while the pressure inside the gasifier chilling chamber 1901 and the lock hopper 1902 is changed greatly and belongs to a high-pressure environment, the inside of the lock hopper 1902 can be filled with grey water medium and solid particle slag, and therefore the liquid level sensors inside the lock hopper 1902 and the gasifier chilling chamber 1901 are preferably an ultrasonic liquid level transmitter or a radar liquid level transmitter. The inside level gauge changer that still is provided with of gasifier chilling chamber 1901, the grey water medium that locks in the fill 1902 constantly circulates and gets into gasifier chilling chamber 1901 for the inside grey water medium of gasifier chilling chamber 1901 is more and more, and the level gauge changer can be fixed a position to the clear water layer, accurately sends clear water layer clear water to flash vaporization system through gasifier drainage trip valve 1922, discharges away unnecessary clear water, guarantees moreover can not discharge away oil layer or dregs layer. All level sensor all include the lock fill system operation liquid level information who will gather and send the communication module of lock fill control system control unit.

In the embodiment of the invention, the lock hopper water replenishing tank 1903 is provided with the static pressure input type liquid level transmitter, so that the liquid level detection accuracy in the lock hopper water replenishing tank 1903 can be ensured, and the liquid level sensor is convenient to install and simple to use because the static pressure input type liquid level transmitter has the advantages of exquisite structure, simplicity in adjustment, flexibility in installation and the like. According to the operating mode difference that level sensor operated, the level sensor of selection difference can be so that liquid level acquisition information is more accurate, also because the level sensor adaptation operating mode environment of corresponding operating mode can improve the long-term steady operation nature of system, reduces the level sensor trouble and takes place, keeps the operation that lock fill system can be stable for a long time.

Preferably, the sensor unit further includes a flow sensor, which is used for acquiring flow information of the overflowing liquid in the pipeline of the lock bucket system and is located on the circulation pipeline of the lock bucket 1902, the flow sensor is preferably an electromagnetic flowmeter, and the lining material is neoprene. The flow sensor also comprises a communication module used for transmitting the acquired flow information of the circulating pipeline to the control unit of the lock hopper control system.

In the embodiment of the invention, the lock hopper auxiliary slag collecting pump 1904 continuously circulates clean water on the upper layer of the lock hopper 1902 to the pyramid part of the gasification furnace chilling chamber 1901 to flush solid particle slag into the lock hopper 1902, the circulation flow of the circulation pipeline of the lock hopper 1902 is closely related to the slag discharging process of the gasification furnace chilling chamber 1901, the real-time circulation flow is monitored on the circulation pipeline, and the slag discharging condition of the gasification furnace chilling chamber 1901 can be well simulated. The flow sensor is preferably an electromagnetic flow meter, the electromagnetic flow meter is sensitive in response and free of mechanical inertia, instantaneous pulsating flow can be measured, the slag collecting process of the gasifier chilling chamber 1901 is fast, flow change in the circulation pipeline of the lock hopper 1902 is fast, and the electromagnetic flow meter can quickly capture flow change conditions, so that detected data are more accurate. Chloroprene rubber is selected for use to electromagnetic flowmeter's interior lining material, because the liquid that overflows in the lock fill 1902 circulating line is the cleaner grey water medium in lock fill 1902 upper strata, but still can avoid having partial solid particle sediment to get into the circulating line, these solid particle sediment can take place the friction with electromagnetic flowmeter lining material, chloroprene rubber has wear resistance well, can guarantee that electromagnetic flowmeter keeps long-term steady operation, and chloroprene rubber has better acid and alkali-resistance ability, can adapt to more adverse circumstances, electromagnetic flowmeter's life is improved.

Preferably, the control unit includes: the communication unit is used for receiving the operation parameters acquired by the sensor unit and sending a control instruction to the lock hopper 1902 sequential control system and each execution mechanism, and the signal transmission of the communication unit adopts high-frequency signal transmission; and the logic judgment unit is used for judging the current working condition of the lock hopper system according to the operation parameters and generating a corresponding control instruction according to the current working condition of the lock hopper system, and is provided with a hundred millisecond logic arithmetic unit.

In the embodiment of the invention, the communication module preferably adopts high-frequency signal transmission, so that the anti-interference capability of a transmission signal is strong, the signal intensity is stronger, in the operation process of the lock hopper system, the change of some operation parameters is hundred milliseconds, the control unit needs to accurately receive the operation parameter information sent by the sensor unit in time, calculate and judge the operation parameters in time through the configured hundred millisecond logic operation module and generate a corresponding control instruction, and then efficiently, timely and accurately send the control instruction to a component needing to execute adjustment. By adopting the mode of the embodiment of the application, the operation of the lock hopper system can be efficiently carried out, and the operation state of the lock hopper system can be rapidly and accurately evaluated and adjusted, so that the intelligent degree of the whole system is higher.

Preferably, the lock hopper control system further comprises a human-computer interaction module for human-computer interaction, such as a display, a keyboard and the like.

In the embodiment of the invention, the lock hopper control system can carry out two operation modes, namely an Auto automatic mode and a Manual mode, under the automatic operation state, the operation state of each actuating mechanism of the system is controlled by the lock hopper sequence control system according to preset time sequence parameters, the control unit automatically acquires the operation parameter information of the lock hopper system detected by the sensor unit, automatically carries out simulation judgment on the real-time operation condition information of the lock hopper system according to the operation parameter information, and automatically generates an adjustment instruction and automatically controls the system to adjust when the system is required to be adjusted. And the display equipment is added, the running state and the running parameters of the system can be displayed in real time, an operator can judge the running condition of the system through display information, when the system automatically detects abnormal working conditions, the system can display the abnormal running parameters through a display and locate a unit which possibly breaks down, the operator can manually switch Manual modes through input control devices such as a keyboard and a mouse to perform Manual intervention, even in the normal and automatic running process of the system, the operator can also switch working modes at any time through a human-computer interaction device, and the operator can conveniently perform some intermediate step adjustment or intermediate step detection. The display equipment can display unit positioning information which is possibly abnormal, system maintenance personnel can carry out fault troubleshooting on the system units according to the positioning information pertinence, and the time for carrying out large-range troubleshooting on the system is saved, so that the system maintenance time is greatly shortened, and the long-time parking after the lock hopper system breaks down is avoided.

Preferably, the lock hopper control system further comprises an alarm unit for alarming and reminding, the alarm unit is preferably an audible and visual alarm, and the alarm unit further comprises a communication unit for receiving an alarm instruction.

In the embodiment of the invention, the alarm is an audible and visual alarm which can simultaneously send out an audible alarm signal and a visual alarm signal, thereby greatly improving the probability of receiving the alarm signal by an operator, and enabling the operator to find system problems and carry out fault maintenance in time.

The present invention also provides a computer-readable storage medium having instructions stored thereon, which, when executed on a computer, cause the computer to execute the lock hopper system operation control method as described above.

While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications are within the scope of the embodiments of the present invention. It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention will not be described separately for the various possible combinations.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as disclosed in the embodiments of the present invention as long as it does not depart from the spirit of the embodiments of the present invention.