阅读说明：本技术 储罐自动放沉系统 (Automatic storage tank sinking system ) 是由 王新河 杨剑武 岳炜杰 刘全军 王进 李思雨 王洪涛 张瑞静 杨云虹 于 2021-04-23 设计创作，主要内容包括：本发明提供了一种储罐自动放沉系统,该储罐自动放沉装置包括储罐本体、用于检测储罐本体内油水界面的油水界面检测仪、与储罐本体底部连通的放沉管线、设置于放沉管线上的油水含量分析仪和排水阀；储罐自动放沉装置还包括控制器,控制器与油水界面检测仪、油水含量分析仪连接,还用于控制排水阀的开关；本发明提供的过滤器自动排水系统通过设置油水界面检测仪实时监测储罐本体底部的油水界面,当油水界面超过设定值时,联动打开排水阀,排出水分杂质,直至油水界面降低至某一数值,且放沉管线上油水含量分析仪测量的水含量小于30ppm,关闭放沉电动阀,完成放沉操作；减少了工作量,即省时省力,又减少航煤的排放,而且油品质量能得到保证。(The invention provides an automatic storage tank sinking system, which comprises a storage tank body, an oil-water interface detector for detecting an oil-water interface in the storage tank body, a sinking pipeline communicated with the bottom of the storage tank body, an oil-water content analyzer arranged on the sinking pipeline and a drain valve, wherein the oil-water interface detector is used for detecting an oil-water interface in the storage tank body; the automatic storage tank sinking device also comprises a controller, the controller is connected with the oil-water interface detector and the oil-water content analyzer and is also used for controlling the opening and closing of the drain valve; the automatic water discharging system of the filter provided by the invention monitors the oil-water interface at the bottom of the storage tank body in real time by arranging the oil-water interface detector, when the oil-water interface exceeds a set value, the drain valve is opened in a linkage manner to discharge water impurities until the oil-water interface is reduced to a certain value, and the water content measured by the oil-water content analyzer on the sinking pipeline is less than 30ppm, the sinking electric valve is closed to finish the sinking operation; the workload is reduced, time and labor are saved, the emission of aviation kerosene is reduced, and the quality of oil products can be ensured.)

1. The automatic storage tank sinking device is characterized by comprising a storage tank body (1), an oil-water interface detector (3) for detecting an oil-water interface in the storage tank body (1), a sinking pipeline (4) communicated with the bottom of the storage tank body (1), an oil-water content analyzer (5) arranged on the sinking pipeline (4) and a drain valve (6);

the automatic storage tank sinking device further comprises a controller (7), wherein the controller (7) is connected with the oil-water interface detector (3) and the oil-water content analyzer (5) and is also used for controlling the switch of the drain valve (6).

2. The automatic storage tank sinking device of claim 1, further comprising a probe fixing device, wherein the probe fixing device comprises a first flange (38) fixedly connected with the measuring probe (20) of the oil-water interface detector (3), a bracket (39) arranged at the inner bottom of the storage tank body (1), and a threading pipe (40) arranged on the bracket (39), a second flange (41) is arranged at the end of the threading pipe (40), the first flange (38) and the second flange (41) are connected through a bolt (42), and the end of the threading pipe (40) is located at the axis of the storage tank body (1).

3. The automatic storage tank sinking device according to claim 1, wherein a floating plate (8) is further arranged in the storage tank body (1), a plurality of sliding grooves (9) are vertically arranged on the inner wall of the storage tank body (1), each sliding groove (9) is correspondingly provided with a sliding block (10), an infrared heater (11) is arranged on each sliding block (10), each sliding block (10) is fixedly connected to the upper surface of the floating plate (8) through a connecting rod (12), a humidity sensor (13) is arranged on the side wall of the storage tank body (1), and the humidity sensor (13) and the infrared heater (11) are both connected with the controller (7); be equipped with a plurality of box bodies (17) on connecting rod (12), be equipped with drier (18) in box body (17), be equipped with ventilation hole (19) on box body (17).

4. The automatic storage tank settlement device of claim 1, wherein a nitrogen gas discharge pipeline (14) is communicated above the storage tank body (1), a nitrogen gas fan (15) communicated with the nitrogen gas discharge pipeline (14) is arranged on the outer side wall of the storage tank body (1), a nitrogen gas cooler (16) is arranged between the nitrogen gas fan (15) and the nitrogen gas discharge pipeline (14), and the nitrogen gas fan (15) and the nitrogen gas cooler (16) are both connected with the controller (7).

5. The automatic storage tank sinking device according to claim 1, wherein a fixing part (25) is movably connected to the top end of the measuring probe (20) of the oil-water content analyzer (5), a cylindrical sleeve (26) sleeved on the periphery of the measuring probe (20) of the oil-water content analyzer (5) is arranged on the fixing part (25), an external thread is arranged at the tail end of the cylindrical sleeve (26), the outer side wall of the sinking pipeline (4) is communicated with a hard pipe (27), a first annular groove (28) is formed at one end of the hard pipe (27) extending out of the sinking pipeline (4) along the axial direction of the sinking pipeline (4), an internal thread is arranged in the first annular groove (28), a connecting part (29) sleeved on the outer side of the cylindrical sleeve (26) is arranged on the fixing part (25), and an external thread screwed with the first annular groove (28) is arranged on the outer side wall of the connecting part (29), put and be equipped with movable block (30) in heavy pipeline (4), be equipped with on movable block (30) with hard pipe (27) stretch into put sealed block (31) of the one end clearance ration of heavy pipeline (4), be equipped with second annular groove (32) on sealed block (31), be equipped with in second annular groove (32) with cylindricality sleeve pipe (26) threaded connection's internal thread, cylindricality sleeve pipe (26) end is equipped with through-hole (33).

6. The automatic storage tank settlement device of claim 6, wherein a telescopic rod (34) is connected between the movable block (30) and the rigid pipe (27).

7. The automatic storage tank settlement device of claim 1, wherein an exhaust pipeline (35) is further arranged at the bottom of the storage tank body (1), an exhaust fan (36) is connected to the tail end of the exhaust pipeline (35), and a valve (37) is arranged on the exhaust pipeline (35).

8. The automatic tank sedimentation device according to claim 1, wherein the controller (7) further comprises a first acquisition module (74) and a first threshold calculation module (75);

the first acquisition module (74): initial threshold value W for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content x of water in oil detected at two sampling points₁、x₂The distance P between the two sampling points and sending the acquired data to a first threshold value calculation module (75);

the first threshold calculation module (75): -an actual threshold value Z for calculating the oil water content analyzer (5), said actual threshold value Z being calculated by the following formula:

x₂for the water content in the oil detected at the first sampling point, x₁The water content of the oil detected at the second sample point.

9. The automatic tank settlement device according to claim 1, wherein the controller (7) further comprises a second acquisition module (76) and a second threshold calculation module (77);

the second acquisition module (76): initial threshold B for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content y of water in oil detected in two adjacent samplings at the same sampling point₁、y₂Time t of two adjacent samples₁、t₂The radius r of the sink line (4) and the flow velocity v of the liquid in the sink line (4), and sending the acquired data to a second threshold calculation module (77);

the second threshold calculation module (77): -an actual threshold value a for calculating the oil-water content analyzer (5), said actual threshold value a being calculated by the following formula:

t₁at the 1 st time point, t₂At the 2 nd time point, y₂Is t₁Water content in oil, y, detected at time point₁Is t₂The water content of the oil detected at the time point.

10. The automatic tank settlement device according to claim 1, wherein the controller (7) comprises an analysis module (71), a drainage frequency detection module (72) and an alarm module (73);

the analysis module (71): the device is used for judging whether the oil-water interface detector (3) and the oil-water content analyzer (5) are in a usable state or not, when the oil-water interface detector (3) and the oil-water content analyzer (5) are both in a usable state, the opening of the drain valve (6) is controlled through the oil-water interface detector (3), the closing of the drain valve (6) is controlled through the oil-water content analyzer (5) and/or the oil-water interface detector (3), when the oil-water interface detector (3) is in a usable state and the oil-water content analyzer (5) is in an unusable state, an instruction is sent to the alarm module (73), when the oil-water interface detector (3) is in a usable state, the opening and the closing of the drain valve (6) are controlled through the oil-water interface detector (3), when the oil-water content analyzer (5) is in a usable state and the oil-water interface detector (3) is in an unusable state, sending a request to the drainage frequency detection module (72) and receiving a result, controlling the opening of the drainage valve (6) according to the received drainage frequency result, and controlling the closing of the drainage valve (6) through the oil-water content analyzer (5);

the drainage frequency detection module (72): for detecting the opening time of the drainage valve (6), and calculating the drainage frequency f, wherein the drainage frequency f is (t)_n-t_m) N-m, n being the number of times the valve (6) is opened, t_n-tm tableThe difference between the time of opening the water discharge valve (6) at the nth time and the time of opening the water discharge valve (6) at the mth time is shown;

the alarm module (73): for alerting upon receiving an instruction from the analysis module (71).

Technical Field

The invention belongs to the technical field of oil-water separation of oil storage tanks, and particularly relates to an automatic settling system of a storage tank.

Background

According to the requirements of civil aviation fuel quality control and operation program (MHT6020-2012) item 11 aviation fuel storage program, the storage tanks and all recovery tanks which emit fuel on the same day should be drained and checked daily, and the moisture content is required to be not more than 30ppm (thirty million).

At present, the operations are manually completed on the manual site, the workload is large, and the working efficiency is low.

Disclosure of Invention

In order to solve the technical problem, the invention provides an automatic storage tank sinking system. The specific technical scheme of the invention is as follows:

the invention provides an automatic storage tank sinking system, which comprises a storage tank body, an oil-water interface detector for detecting an oil-water interface in the storage tank body, a sinking pipeline communicated with the bottom of the storage tank body, an oil-water content analyzer arranged on the sinking pipeline and a drain valve, wherein the oil-water interface detector is used for detecting an oil-water interface in the storage tank body;

the automatic storage tank sedimentation device further comprises a controller, the controller is connected with the oil-water interface detector and the oil-water content analyzer, and the controller is further used for controlling the switch of the drain valve.

The improved structure of the automatic storage tank sinking device comprises a first flange, a support and a threading pipe, wherein the first flange is fixedly connected with a measuring probe of the oil-water interface detector, the support is arranged at the bottom in a storage tank body, the threading pipe is arranged on the support, a second flange is arranged at the end of the threading pipe, the first flange and the second flange are connected through bolts, and the end of the threading pipe is located at the axis of the storage tank body.

The improved structure of the storage tank comprises a storage tank body, a floating disc, a plurality of sliding grooves, an infrared heater, a humidity sensor and a controller, wherein the floating disc is further arranged in the storage tank body; the connecting rod is provided with a plurality of box bodies, drying agents are arranged in the box bodies, and the box bodies are provided with ventilation holes.

Further improvement, storage tank body top intercommunication has nitrogen gas discharge line, and the lateral wall of storage tank body is equipped with the nitrogen gas fan with nitrogen gas discharge line intercommunication, is equipped with the nitrogen gas cooler between nitrogen gas fan and the nitrogen gas discharge line, and nitrogen gas fan, nitrogen gas cooler all are connected with the controller.

Further improvement, the top swing joint of oil water content analysis appearance's measuring probe has the fixed part, be equipped with the cylindricality sleeve pipe that the cover located oil water content analysis appearance's measuring probe periphery on the fixed part, cylindricality sleeve pipe end is equipped with the external screw thread, the lateral wall intercommunication that puts the pipeline that sinks has the hard pipe, the hard pipe stretches out the one end that puts the pipeline that sinks and forms first annular groove along the axis direction that puts the pipeline, be equipped with the internal thread in the first annular groove, be equipped with the connecting portion that the cylindricality sleeve pipe outside was located to the cover on the fixed part, the lateral wall of connecting portion is equipped with the external screw thread with first annular groove spiro union, it is equipped with the movable block in the pipeline to sink, be equipped with the sealed block that stretches into the one end clearance ration of putting the pipeline with the hard pipe on the movable block, be equipped with second annular groove on the sealed block, be equipped with the internal thread with cylindricality sleeve pipe threaded connection in the second annular groove, cylindricality sleeve pipe end is equipped with the through-hole.

Further improvement, a telescopic rod is connected between the movable block and the hard tube.

The improved storage tank is characterized in that an exhaust pipeline is further arranged at the bottom of the storage tank body, the tail end of the exhaust pipeline is connected with an exhaust fan, and a valve is arranged on the exhaust pipeline.

In a further improvement, the controller further comprises a first acquisition module and a first threshold calculation module;

the first acquisition module: initial threshold value W for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content x of water in oil detected at two sampling points₁、x₂The distance P between the two sampling points is obtained, and the collected data are sent to a first threshold value calculation module;

a first threshold calculation module: the method is used for calculating an actual threshold value Z of the oil-water content analyzer, and the actual threshold value Z is calculated by the following formula:

x₂for the water content in the oil detected at the first sampling point, x₁The water content of the oil detected at the second sample point.

In a further improvement, the controller further comprises a second acquisition module and a second threshold calculation module;

the second acquisition module: initial threshold B for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content y of water in oil detected in two adjacent samplings at the same sampling point₁、y₂Time t of two adjacent samples₁、t₂The radius r of the heaving line and the flow velocity v of liquid in the heaving line, and the acquired data are sent to a second threshold calculation module;

a second threshold calculation module: the method is used for calculating an actual threshold value A of the oil-water content analyzer, and the actual threshold value A is calculated by the following formula:

t₁at the 1 st time point, t₂At the 2 nd time point, y₂Is t₁Of water in oil detected at a point in timeContent, y₁Is t₂The water content of the oil detected at the time point.

The controller comprises an analysis module, a drainage frequency detection module and an alarm module;

an analysis module: is used for judging whether the oil-water interface detector and the oil-water content analyzer are in a usable state or not, when the oil-water interface detector and the oil-water content analyzer are in the usable state, the opening of the drain valve is controlled by an oil-water interface detector, the closing of the drain valve is controlled by an oil-water content analyzer and/or an oil-water interface detector, when the oil-water interface detector and the oil-water interface detector are both in an unavailable state, an instruction is sent to the alarm module, when the oil-water interface detector is in an available state, when the oil-water content analyzer is in an unavailable state, the oil-water interface detector controls the opening and closing of the drain valve, when the oil-water content analyzer is in an available state, and when the oil-water interface detector is in an unavailable state, sending a request to the drainage frequency detection module and receiving a result, controlling the opening of the drain valve according to the received drain frequency result, and controlling the closing of the drain valve through an oil-water content analyzer;

drainage frequency detection module: for detecting the opening time of the water discharge valve, and calculating the water discharge frequency f (t ═ t)_n-t_m) N-m, n being the number of times the valve is opened, t_n-t_mThe difference between the time of the nth time of opening the drain valve and the time of the mth time of opening the drain valve is shown;

an alarm module: and the alarm is given after the instruction of the analysis module is received.

The invention has the following beneficial effects: the automatic water discharging system of the filter provided by the invention monitors the oil-water interface at the bottom of the storage tank body in real time by arranging the oil-water interface detector, when the oil-water interface exceeds a set value, the drain valve is opened in a linkage manner to discharge water impurities until the oil-water interface is reduced to a certain value, and the water content measured by the oil-water content analyzer on the sinking pipeline is less than 30ppm, the sinking electric valve is closed to finish the sinking operation; compared with the traditional manual on-site immersion, the function is realized, the workload is effectively reduced, time and labor are saved, the emission of aviation kerosene is reduced, and the quality of oil products can be guaranteed.

Drawings

FIG. 1 is a schematic diagram of an exemplary automatic tank settling system;

FIG. 2 is a block diagram of an exemplary control system;

FIG. 3 is a cross-sectional view of an exemplary automatic tank settling system;

FIG. 4 is a partial cross-sectional view of an exemplary automatic tank settling system;

FIG. 5 is a partial cross-sectional view of an exemplary automatic tank settling system;

FIG. 6 is a schematic diagram of an exemplary automatic tank settling system;

FIG. 7 is a partial cross-sectional view of an exemplary automatic tank settling system;

FIG. 8 is a partial cross-sectional view of an exemplary automatic tank settling system;

FIG. 9 is a schematic diagram of an exemplary automatic tank settling system;

FIG. 10 is a block diagram of an exemplary controller;

FIG. 11 is a block diagram of an exemplary controller;

FIG. 12 is a block diagram of an exemplary controller；

FIG. 13 is a graph with time as the abscissa and water content in oil as the ordinate for an example;

fig. 14 is a reference diagram illustrating an example of a method of calculating the actual threshold Z.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

Examples

As shown in fig. 1, which shows a schematic structural diagram of an automatic storage tank settling system of the present invention, the automatic storage tank settling device includes a storage tank body 1, an oil-water interface detector 3 for detecting an oil-water interface in the storage tank body 1, a settling line 4 communicated with the bottom of the storage tank body 1, an oil-water content analyzer 5 disposed on the settling line 4, and a drain valve 6; as shown in fig. 2, the automatic storage tank settling device further comprises a controller 7, wherein the controller 7 is connected with the oil-water interface detector 3 and the oil-water content analyzer 5 and is further used for controlling the opening and closing of the drain valve 6; wherein, one end of the drainage pipeline is connected with a ponding output port at the bottom of the storage tank body, the other end can be connected with a water storage tank for storing the drained ponding, the detection end of the oil-water interface detector extends into the storage tank body, the output end is connected with the input end of the controller through a signal transmission line, the oil-water interface detector is used for detecting the position information of the oil-water interface in the storage tank body, can be obliquely inserted or directly inserted into the storage tank body and transmits the position information to the controller, the output end of the controller is connected with the drain valve through a signal transmission line, the controller sends a control signal to the drain valve according to the position information to control the opening and closing of the drain valve, the number 100 in figure 1 represents an oil-water interface detector probe, the oil-water interface detector can adopt all instruments capable of detecting the oil-water surface position information, including a capacitance type oil-water interface detector and a floating ball type oil-water interface detector, for example, the oil-water interface detector of model BHK62/HF-008, the oil-water content analyzer can be any one capable of detecting water content in oil, such as ZGJD-C type oil-water content analyzer; when the water level control device is used, a highest water level value can be preset, when the oil-water interface position is detected to be higher than the highest water level value, an opening control signal is sent to the drain valve, at the moment, the drain valve is opened to discharge water impurities until the oil-water interface is reduced to a certain numerical value, the water content measured by the oil-water content analyzer on the sinking pipeline is less than 30ppm, the sinking electric valve is closed, the sinking operation is completed, the function is realized, compared with the traditional manual sinking in a manual field, the work load is effectively reduced, time and labor are saved, the emission of aviation kerosene is reduced, and the oil quality can be guaranteed.

In some examples, the automatic storage tank submerging device further comprises a probe fixing device, as shown in fig. 3, which shows a cross-sectional view of the automatic storage tank submerging system of the present invention, the probe fixing device comprises a first flange 38 fixedly connected with the measuring probe 20 of the oil-water interface detector 3, a bracket 39 arranged at the inner bottom of the storage tank body 1, and a threading pipe 40 arranged on the bracket 39, wherein the end of the threading pipe 40 is provided with a second flange 41, the first flange 38 and the second flange 41 are connected by a bolt 42, the end of the threading pipe 40 is located at the axial center of the storage tank body 1, wherein the first flange is fixedly connected with the measuring probe, such as welded, the bracket is fixedly connected with the inner bottom of the storage tank body, such as welded, the threading pipe is movably connected with the bracket, such as clamped, the second flange is fixedly connected with the threading pipe, such as bonded, by arranging the above structure in this example, the measuring probe of the oil-water interface detector can be firmly fixed in the storage tank body, and when the measuring probe is damaged, the measuring probe is convenient to replace.

In some examples, as shown in fig. 4, which shows a cross-sectional view of the automatic storage tank sinking system of the present invention, a floating plate 8 is further disposed in a storage tank body 1, a plurality of sliding chutes 9 are vertically disposed on an inner wall of the storage tank body 1, each sliding chute 9 is correspondingly provided with a sliding block 10, an infrared heater 11 is disposed on the sliding block 10, the sliding block 10 is fixedly connected to an upper surface of the floating plate 8 through a connecting rod 12, a humidity sensor 13 is disposed on a side wall of the storage tank body 1, and the humidity sensor 13 and the infrared heater 11 are both connected to a controller 7; wherein, the humidity sensor is arranged at the side wall of the storage tank body close to the cover body, can more accurately detect whether water vapor is still contained in the storage tank body, the humidity sensor can adopt any type of sensor capable of monitoring humidity, such as the humidity sensor with the type AM2320, the infrared heater can adopt any type, such as the infrared heater with the type WERXYWD-150, the slide block is fixedly connected with the floating disc through the connecting rod, if the slide block and the connecting rod are made of metal materials, the three can be welded together, in the example, the floating disc, the sliding chute, the slide block, the infrared heater and the humidity sensor are arranged, the humidity in the storage tank body can be detected by the humidity sensor to be lower than a preset value, if the water vapor enters the storage tank body in the plum rain season in the south, an instruction is sent to the controller, the controller controls the infrared heater to be turned on for heating, the infrared heater is closer to the oil surface, can preferentially heat the drying with its near air, block the pollution that storage tank body top moist air caused kerosene, along with the extension of heating time, get rid of the internal whole steam of storage tank, reduce the risk of breeding the microorganism.

In some examples, as shown in fig. 5, which shows a cross-sectional view of the automatic storage tank settlement system of the present invention, a plurality of boxes 17 are provided on the connecting rod 12, a drying agent 18 is provided in each box 17, and a vent hole 19 is provided in each box 17; the box body can be fixedly or movably connected with the connecting rod, the box body can be opened, so that a drying agent can be conveniently taken out or put in, and the drying agent can be a commercially available drying agent; this example is through setting up a plurality of box bodys on the connecting rod to set up the drier in the box body, can absorb it when there is a small amount of steam in the storage tank body, further reduce the risk of breeding the microorganism.

In some examples, as shown in fig. 6, which shows a schematic structural diagram of an automatic storage tank sedimentation system of the present invention, a nitrogen gas discharge pipeline 14 is communicated above a storage tank body 1, a nitrogen gas fan 15 communicated with the nitrogen gas discharge pipeline 14 is arranged on an outer side wall of the storage tank body 1, a nitrogen gas cooler 16 is arranged between the nitrogen gas fan 15 and the nitrogen gas discharge pipeline 14, and both the nitrogen gas fan 15 and the nitrogen gas cooler 16 are connected with a controller 7; wherein the nitrogen gas fan can adopt the nitrogen gas fan that the model is HDSR50-350, the nitrogen gas cooler can adopt the nitrogen gas cooler that the model is CBE-56AF, this example sets up the nitrogen gas discharge pipeline with, nitrogen gas fan and nitrogen gas cooler, when detecting that this internal steam value of storage tank exceeds the default, controller control nitrogen gas fan and nitrogen gas cooler open, nitrogen gas fan discharges nitrogen gas, make this internal partial nitrogen gas discharge originally of storage tank, take away partly steam, and reduce the temperature of nitrogen gas through the nitrogen gas cooler, can avoid the inside temperature of storage tank body to be higher than the external temperature and produce steam, reduce the risk of breeding the microorganism.

In some examples, as shown in fig. 7 and 8, which illustrate a partial cross-sectional view of the automatic storage tank sinking system of the present invention, a fixed part 25 is movably connected to a top end of a measuring probe 20 of an oil-water content analyzer 5, a cylindrical sleeve 26 sleeved on an outer circumference of the measuring probe 20 of the oil-water content analyzer 5 is disposed on the fixed part 25, an external thread is disposed at a terminal end of the cylindrical sleeve 26, a rigid pipe 27 is connected to an outer side wall of the sinking line 4, a first annular groove 28 is formed along an axial direction of the sinking line 4 at an end of the rigid pipe 27 extending out of the sinking line 4, an internal thread is disposed in the first annular groove 28, a connecting part 29 sleeved on an outer side of the cylindrical sleeve 26 is disposed on the fixed part 25, an external thread screwed with the first annular groove 28 is disposed on an outer side wall of the connecting part 29, a movable block 30 is disposed in the sinking line 4, a sealing block 31 is disposed on the movable block 30 and provided with a distribution gap at an end of the rigid pipe 27 extending into the sinking line 4, a second annular groove 32 is formed in the sealing block 31, an internal thread in threaded connection with the cylindrical sleeve 26 is arranged in the second annular groove 32, a through hole 33 is formed in the tail end of the cylindrical sleeve 26, and a telescopic rod 34 is connected between the movable block 30 and the hard tube 27; the movable connection mode of the fixed part and the measuring probe comprises but is not limited to clamping and fixed connection, the cylindrical sleeve is fixedly connected with the fixed part, if the cylindrical sleeve is integrally formed, the length of the hard pipe extending into the sinking pipeline does not exceed the inner diameter of the sinking pipeline, the connecting part is fixedly connected with the fixed part, the sealing block is integrally formed with the movable block, the number of the through holes is not specifically limited in this example, one or more through holes can be arranged, and the telescopic rod is fixedly connected with the movable block and the hard pipe; FIG. 7 shows an operating state, in which a cylindrical sleeve is screwed with a sealing block, a hard tube is screwed with a connecting part, the sealing block is pushed into a sinking pipeline, the sealing block and the hard tube are not in a sealing state any more, liquid in the sinking pipeline can enter the cylindrical sleeve through a through hole and contact with a measuring probe of an oil-water content analyzer, measurement can be performed at this time, FIG. 8 shows a non-operating state, when the measuring probe of the oil-water content analyzer is damaged, a fixing part can be held by a hand to rotate, the connecting part and the hard tube are changed from a state to a separated state, the connecting part moves to drive the cylindrical sleeve to move, the cylindrical sleeve drives the sealing block to be inserted into the hard tube to form a sealing state, and then the cylindrical sleeve and the sealing block are further rotated to change from the screwing state to the separated state, the measuring probe of the oil-water content analyzer can be taken off, because the sealing block seals the hard tube, the liquid in the sinking line cannot flow out, and at the moment, a new measuring probe can be replaced, and other parts do not need to be replaced.

In some examples, as shown in fig. 9, which shows a schematic structural diagram of the automatic storage tank settlement system of the present invention, an exhaust pipeline 35 is further disposed at the bottom of the storage tank body 1, an exhaust fan 36 is connected to the end of the exhaust pipeline 35, and a valve 37 is disposed on the exhaust pipeline 35; wherein, filter body and upper end cap accessible buckle are connected or other modes are connected, and the filter core is used for filtering kerosene, when opening filter upper end cap, for the filter renew cartridge, opens the air exhauster in advance, and the inside oil gas of filter is discharged through the air exhauster, reduces oil gas to operating personnel's injury.

In some embodiments, the controller 7 further comprises a first acquisition module 74 and a first threshold calculation module 75; as shown in fig. 10, a block diagram of the controller of the present invention is shown;

the first acquisition module 74: initial threshold value W for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content x of water in oil detected at two sampling points₁、x₂Distance P between two sampling points, and sends the acquired data to the first threshold calculation module 75;

the first threshold calculation module 75: and the actual threshold value Z is used for calculating the oil-water content analyzer 5, and is calculated by the following formula:

x₂for the water content in the oil detected at the first sampling point, x₁The water content in the oil detected at the second sampling point;

wherein, the oil-water content analyzer can be arranged at both sampling points to measure the water content in the oil at the two sampling points, if one of the sampling points is damaged, the other oil-water content analyzer can be used alternatively; as shown in fig. 14, Z is the preset water content in oil at the axis of the storage tank body, W is the water content in oil detected by the oil-water content analyzer installed on the sinking pipeline and entered by the user, Z and W are theoretical values of the water content in oil at two points (the axis of the bottom of the storage tank body and the probe of the oil-water content analyzer) corresponding to each other at the same time, and x is the theoretical value at this time₂-x₁The difference of the water content in the oil measured at the same time by two sampling points between the axis of the bottom of the storage tank body and the probe of the oil-water content analyzer,is the variation value of the water content in the oil in unit distance,for putting the difference between the interior liquid of heavy pipeline and the oil water content analysis appearance probe place from storage tank body bottom axle center department, if: the collected initial threshold value W recorded by the user is 35 (namely, the user wants to close the drain valve when the water content in the oil at the axle center of the bottom of the storage tank body is W), and x₂＝43ppm，x₁42ppm, 1m, 10m, thenThen, the system can preset that when the probe of the oil-water content analyzer detects that the water content in the oil is 25, the drain valve is closed, at the moment, the water content in the oil of the liquid at the axis of the bottom of the storage tank body is just 35, and the initial threshold value input by a user is met; the prior art generally defines the preset water content value in oil directly, but the distance between the inside of the storage tank body and the probe is very long, the water content in the oil of the liquid at two points has a large difference, the water content in the oil in the storage tank body is often greater than that at the probe, unnecessary waste is easily generated, and the system can close the drain valve in time when the water content in the oil at the axis of the bottom of the storage tank body reaches a certain value more accurately by adding the first acquisition module 74 and the first threshold calculation module 75, so that unnecessary waste is avoided.

In some examples, the controller 7 further includes a second acquisition module 76 and a second threshold calculation module 77; as shown in fig. 11, a block diagram of the controller of the present invention is shown;

the second acquisition module 76: initial threshold B for collecting user input, horizontal distance L between oil-water content analyzer probe and storage tank body axis, and content y of water in oil detected in two adjacent samplings at the same sampling point₁、y₂Time t of two adjacent samples₁、t₂The radius r of the sinking line 4 and the flow velocity v of the liquid in the sinking line 4, and sending the acquired data to the second threshold calculation module 77;

the second threshold calculation module 77: and the actual threshold value A is used for calculating the actual threshold value A of the oil-water content analyzer 5, and the actual threshold value A is calculated by the following formula:

t₁at the 1 st time point, t₂At the 2 nd time point, y₂Is t₁Water content in oil, y, detected at time point₁Is t₂The water content of the oil detected at the time point.

As shown in fig. 13, the abscissa is time (in units of s), the ordinate is water content in oil (in units of ppm), a is the preset water content in oil at the axis of the storage tank body, B is the water content in oil detected by an oil-water content analyzer arranged on the sinking pipeline and recorded by a user, and y is the water content in oil detected by the oil-water content analyzer arranged on the sinking pipeline₂、 y₁A and B are the water content in oil at different time points of the same measuring point (where the probe of the oil-water content analyzer is located), and y is the time point₂-y₁At two time points (t)₁And t₂) The difference in the measured water content of the oil,is the change value of the water content in the oil in unit time,the ratio of the volume to the flow speed of the sinking pipeline between the axis of the bottom of the storage tank and the probe of the oil-water content analyzer is used for obtaining the time required for the liquid in the sinking pipeline to flow from the axis of the bottom of the storage tank to the probe of the oil-water content analyzer,for putting the interior liquid of pipeline that sinks from storage tank body bottom axle center department and the water content in oil difference of water content in the oil between the oil water content analyzer probe place, if: the collected initial threshold value B which is input by the user is 35 (namely the user wants to close the drain valve when the water content in the oil at the axis of the bottom of the storage tank body is B), y₂＝43ppm，y₁＝42ppm，t₂＝3s，t₁＝2s， r＝10cm，L＝1000cm，v＝31400cm³S, thenThen, the system can preset that when the probe of the oil-water content analyzer detects that the water content in the oil is 25, the drain valve is closed, at the moment, the water content in the oil of the liquid at the axis of the bottom of the storage tank body is just 35, and the initial threshold value input by a user is met; the prior art generally defines the preset water content value in oil directly, but the distance between the inside of the storage tank body and the probe is very long, the water content in the oil of the liquid at two points has a large difference, the water content in the oil in the storage tank body is often greater than that at the probe, unnecessary waste is easily generated, and the system can more accurately close the drain valve in time when the water content in the oil at the axis of the bottom of the storage tank body reaches a certain value by adding the second acquisition module 76 and the second threshold calculation module 77, so that the unnecessary waste is avoided.

In some examples, the controller 7 includes an analysis module 71, a drainage frequency detection module 72, and an alarm module 73; as shown in fig. 11, there is shown a block diagram of the structure of the controller of the present invention,

the analysis module 71: is used for judging whether the oil-water interface detector 3 and the oil-water content analyzer 5 are in a usable state, controlling the opening of the drain valve 6 through the oil-water interface detector 3 when the two are in the usable state, controlling the closing of the drain valve 6 through the oil-water content analyzer 5 and/or the oil-water interface detector 3, sending an instruction to the alarm module 73 when the two are in the unusable state, controlling the opening and closing of the drain valve 6 through the oil-water interface detector 3 when the oil-water interface detector 3 is in the usable state and the oil-water content analyzer 5 is in the unusable state, sending a request to the drain frequency detection module 72 and receiving a result when the oil-water content analyzer 5 is in the usable state and the oil-water interface detector 3 is in the unusable state, and controlling the opening of the drain valve 6 according to the received drain frequency result, the closing of the drain valve 6 is controlled by an oil-water content analyzer 5;

the drainage frequency detection module 72: for detecting the opening time of the discharge valve 6, and calculating the discharge frequency f, which is t_n-t_mN-m, n being the number of times the discharge valve 6 is opened，t_n-t_mIndicating the difference between the time when the n-th discharge valve 6 is opened and the time when the m-th discharge valve 6 is opened;

the alarm module 73: for alarming upon receiving an instruction from the analysis module 71;

in the embodiment, the analysis module is arranged to detect the states of the oil-water interface detector and the oil-water content analyzer, and control the closing of the valve according to the states of the oil-water interface detector and the oil-water content analyzer, when both are in a usable state, the oil-water interface detector detects that the oil-water interface reaches a set threshold, the drain valve is opened, when the oil-water content analyzer detects that the water content in the oil reaches the set threshold, the drain valve is closed, when both are in an unusable state, an instruction is sent to the alarm module 73, when the oil-water interface detector is in a usable state, and the oil-water content analyzer is in an unusable state, the oil-water interface detector controls the opening and closing of the drain valve, a high threshold and a low threshold are set, when the oil-water content analyzer 5 is in a usable state, and the oil-water interface detector 3 is in an unusable state, the oil-water interface detector can control the closing of the drain valve, if the drain valve is opened for 10 times in total, time points of opening for the 1 st time and opening for the 10 th time are calculated, if the first time is 06.20.31 of 2020.02.03 days and the tenth time is 06.20.31 of 2020.02.11 days, f is 11-2/10-1 is 1, and it can be known that the drain valve is opened approximately once a day, the drain valve is automatically opened at 06.20.31 every day; this application can avoid when oil water interface analysis appearance or oil water content analysis appearance are bad to fall through setting up above module, can't open the drain valve to influence the kerosene quality.

The connection relationship between the devices in the drawings of the present invention is for clearly explaining the need of information interaction and control process, and therefore should be regarded as a logical connection relationship, and should not be limited to physical connection only; the present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.