阅读说明：本技术 一种炉顶低温水冷控制系统及其控制方法 (Furnace top low-temperature water cooling control system and control method thereof ) 是由 鹿林 惠展 同国庆 于 2021-10-08 设计创作，主要内容包括：本申请公开了一种炉顶低温水冷控制系统及其控制方法,涉及高炉冶炼技术领域。本申请的一种炉顶低温水冷控制系统,包括进水管路、冷却机构、回水管路和控制系统；进水管路上设置有依次连接的水罐、泵组、水冷机组以及气密箱；回水管路连通气密箱和水罐,并与进水管路形成循环管路系统；冷却机构设置于进水管路上,并分别连通泵组和水冷机组,且位于泵组和水冷机组之间的进水管路上还设置有第一水温计；控制系统分别电连接冷却机构和第一水温计,并能够根据第一水温计反馈的温度控制冷却机构的开启和关闭。采用本发明提高了系统的冷却能力、使得冷却性能更加稳定、减少了废水的排量、实现了自动控制和降低了炉顶故障率的目的。(The application discloses a furnace top low-temperature water cooling control system and a control method thereof, and relates to the technical field of blast furnace smelting. The application discloses a furnace top low-temperature water cooling control system which comprises a water inlet pipeline, a cooling mechanism, a water return pipeline and a control system; the water inlet pipeline is provided with a water tank, a pump set, a water cooling unit and an airtight box which are connected in sequence; the water return pipeline is communicated with the airtight box and the water tank and forms a circulating pipeline system with the water inlet pipeline; the cooling mechanism is arranged on the water inlet pipeline and is respectively communicated with the pump set and the water cooling unit, and a first water thermometer is also arranged on the water inlet pipeline between the pump set and the water cooling unit; the control system is respectively and electrically connected with the cooling mechanism and the first water temperature meter and can control the cooling mechanism to be opened and closed according to the temperature fed back by the first water temperature meter. The invention improves the cooling capacity of the system, leads the cooling performance to be more stable, reduces the discharge amount of waste water, realizes the automatic control and reduces the failure rate of the furnace top.)

1. The furnace top low-temperature water cooling control system is characterized by comprising a water inlet pipeline (1), a cooling mechanism (2), a water return pipeline (3) and a control system (4);

the water inlet pipeline (1) is provided with a water tank (11), a pump set (12), a water cooling unit (13) and an airtight box (14) which are connected in sequence;

the water return pipeline (3) is communicated with the airtight box (14) and the water tank (11) and forms a circulating pipeline system with the water inlet pipeline (1);

the cooling mechanism (2) is arranged on the water inlet pipeline (1), is respectively communicated with the pump set (12) and the water cooling unit (13), and is also provided with a first water temperature meter (15) on the water inlet pipeline (1) between the pump set (12) and the water cooling unit (13);

the control system (4) is respectively and electrically connected with the cooling mechanism (2) and the first water temperature meter (15) and can control the opening and closing of the cooling mechanism (2) according to the temperature fed back by the first water temperature meter (15).

2. The furnace roof cryogenic water cooling control system according to claim 1, characterised in that the water chiller unit (13) comprises an evaporator (131), and both ends of the evaporator (131) are respectively connected with the pump set (12) and the airtight box (14).

3. The furnace roof low temperature water cooling control system according to claim 2, wherein the water chiller unit (13) further comprises a compressor capable of cooling the water chiller unit (13).

4. The furnace roof low temperature water cooling control system according to claim 2 or 3, wherein the water chiller (13) further comprises a condenser (132), the condenser (132) is connected with the cooling mechanism (2), and the condenser (132) is electrically connected with the control system (4).

5. The furnace roof cryogenic water cooling control system according to claim 1, characterised in that the cooling means (2) comprises two cold water lines (21) and a cooler (22);

the cooler (22) is arranged on a water inlet pipeline (1) connected between the pump group (12) and the evaporator (131);

the secondary cold water pipeline (21) comprises a secondary cold water inlet pipeline (211) and a secondary cold water return pipeline (212);

the secondary cold water inlet pipeline (211) is respectively communicated with the water inlet of the cooler (22) and the water inlet of the condenser (132), and valves (213) are respectively arranged on the secondary cold water inlet pipeline (211) which is connected with the water inlet of the cooler (22) and the water inlet of the condenser (132);

the two cold water return pipelines (212) are respectively communicated with a water outlet of the cooler (22) and a water outlet of the condenser (132), a condenser electric control valve (133) is arranged on the two cold water return pipelines (212) connected with the water outlet of the condenser (132), and an electric ball valve (221) is arranged on the two cold water return pipelines (212) connected with the water outlet of the cooler (22).

6. The furnace roof low temperature water cooling control system according to claim 1, wherein the pump group (12) comprises a first electrical pump (121) and a second electrical pump (122), and the first electrical pump (121) and the second electrical pump (122) are arranged in parallel on the water inlet pipeline (1).

7. The furnace roof low-temperature water-cooling control system according to claim 1, further comprising a gas return pipeline (5), wherein the gas return pipeline (5) is communicated with the airtight box (14) and the water return pipeline (3), and a butterfly valve (51) is arranged on the gas return pipeline (5).

8. The furnace roof low temperature water cooling control system according to claim 1, further comprising a water replenishing pipeline (6) and a liquid level meter (61);

the liquid level meter (61) is arranged on the water tank (11), and the liquid level meter (61) is electrically connected with the control system (4);

the two ends of the water replenishing pipeline (6) are respectively communicated with a water source and the water tank (11), an electric valve (62) is arranged on the water replenishing pipeline (6), and the electric valve (62) is electrically connected with the control system (4).

9. The furnace roof low temperature water cooling control system according to claim 8, wherein a check valve (63) and a flow meter (64) are further arranged on the water replenishing pipeline (6), and the flow meter (64) is electrically connected with the control system (4).

10. A control method of a furnace top low-temperature water cooling control system, comprising the furnace top low-temperature water cooling control system of claims 1-9, characterized by comprising the following steps:

starting the pump set (12), the water cooling unit (13) and the airtight box (14), and connecting the water inlet pipeline (1) and the water return pipeline (3);

setting a temperature range value T in the control system (4)₁～T₂Wherein T is₁＜T₂；

Reading the temperature T of the first water temperature meter (15) by the control system (4)₃And will T₃And setting a temperature range value T in the control system (4)₁～T₂And comparing the two values to control the opening and closing of the cooling mechanism (2).

Technical Field

The application relates to the technical field of blast furnace smelting, in particular to a furnace top low-temperature water cooling control system and a control method thereof.

Background

Blast furnace smelting is a main method for modern iron making and is also an important link in steel production. The blast furnace smelting comprises the operation of furnace top material distribution, the furnace top material distribution process is high-temperature operation, and a continuous cooling system is needed in the blast furnace smelting process in order to ensure the normal material distribution and the smooth operation of the furnace top material distribution airtight box. The continuous water cooling system is a cooling mode which is widely applied in blast furnace smelting at present because of outstanding economy.

The water return circuit and return water return circuit mutually independent among the traditional water cooling plant do not form the circulation, and the intaking gets into airtight case through water supply pipe and cools off, and the return water pipeline is gathered through four return water mouths to the return water, directly arranges outward through the water drainage tank, and the water after arranging outward can reuse after the speech processing.

However, the conventional water cooling device has the following defects: firstly, the cooling effect is poor, the temperature difference between cooling water and equipment is small, and the quantity of heat taken away is limited; secondly, cooling water is unstable, and the influence of environmental temperature change on the cooling water is large, so that the cooling is unstable; and thirdly, the water consumption is large, the water cannot be recycled, and the energy waste is caused. And fourthly, the degree of automation is low, and the adjustment is manual adjustment, so that the operation intensity of the furnace top is increased. The cooling water temperature is high and the flow rate is low, so that precipitates are accumulated to block a cooling pipeline; because the poor cooling effect leads to cloth equipment and water system to change the maintenance frequently.

Disclosure of Invention

The embodiment of the application provides a furnace top low-temperature water cooling control system and a control method thereof, solves the problems of poor cooling performance, unstable cooling, large wastewater discharge, low automation degree and high failure rate caused by the traditional water cooling device in the prior art, improves the cooling capacity, enables the cooling performance to be more stable, reduces the waste water discharge, and achieves the purposes of automatic control and reduction of the furnace top failure rate.

A furnace top low-temperature water cooling control system comprises a water inlet pipeline, a cooling mechanism, a water return pipeline and a control system;

the water inlet pipeline is provided with a water tank, a pump set, a water cooling unit and an airtight box which are connected in sequence;

the water return pipeline is communicated with the airtight box and the water tank and forms a circulating pipeline system with the water inlet pipeline;

the cooling mechanism is arranged on the water inlet pipeline and is respectively communicated with the pump set and the water cooling unit, and a first water thermometer is also arranged on the water inlet pipeline between the pump set and the water cooling unit;

the control system is respectively and electrically connected with the cooling mechanism and the first water temperature meter and can control the cooling mechanism to be opened and closed according to the temperature fed back by the first water temperature meter.

Preferably, the water chiller unit comprises an evaporator, and two ends of the evaporator are respectively connected with the pump set and the airtight box.

Preferably, the water chiller unit further comprises a compressor, and the compressor can cool the water chiller unit.

Preferably, the water chiller unit further comprises a condenser, wherein the condenser is connected with the cooling mechanism, and the condenser is electrically connected with the control system.

Preferably, the cooling mechanism comprises two cold water pipelines and a cooler;

the cooler is arranged on a water inlet pipeline connected between the pump set and the evaporator;

the secondary cold water pipeline comprises a secondary cold water inlet pipeline and a secondary cold water return pipeline;

the secondary cold water inlet pipeline is respectively communicated with the water inlet of the cooler and the water inlet of the condenser, and valves are respectively arranged on the secondary cold water inlet pipeline connected with the water inlet of the cooler and the water inlet of the condenser;

the two cold water return pipelines are respectively communicated with the water outlet of the cooler and the water outlet of the condenser, a condenser electric control valve is arranged on the two cold water return pipelines connected with the water outlet of the condenser, and an electric ball valve is arranged on the two cold water return pipelines connected with the water outlet of the cooler.

Preferably, the pump group includes a first electrical pump and a second electrical pump, and the first electrical pump and the second electrical pump are arranged in parallel on the water inlet pipeline.

Preferably, still include the return air pipeline, the return air pipeline intercommunication airtight case with the return water pipeline, just be provided with the butterfly valve on the return air pipeline.

Preferably, the water replenishing device further comprises a water replenishing pipeline and a liquid level meter;

the liquid level meter is arranged on the water tank and is electrically connected with the control system;

the two ends of the water replenishing pipeline are respectively communicated with the water source and the water tank, an electric valve is arranged on the water replenishing pipeline, and the electric valve is electrically connected with the control system.

Preferably, a check valve and a flow meter are further arranged on the water replenishing pipeline, and the flow meter is electrically connected with the control system.

The invention also provides a control method of the furnace top low-temperature water cooling control system, which comprises the furnace top low-temperature water cooling control system, and comprises the following steps:

opening the pump unit, the water cooling unit and the airtight box, and connecting the water inlet pipeline and the water return pipeline;

setting a temperature range value T in the control system₁～T₂Wherein T is₁＜T₂；

Reading the temperature T of the first water temperature meter by the control system₃And will T₃And setting a temperature range value T in the control system₁～T₂And comparing the two values to control the opening and closing of the cooling mechanism.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

the embodiment of the invention provides a furnace top low-temperature water cooling control system, wherein a water inlet pipeline and a water return pipeline are arranged around an airtight box of a furnace top, and when water circulates in the pipelines, heat in the airtight box is taken out through medium water, so that the aim of cooling the airtight box of the furnace top is fulfilled. In addition, the furnace top low-temperature water cooling control system is also provided with a cooling mechanism and a water cooling unit for ensuring the cooling stability of the furnace top low-temperature water cooling control system; the furnace top low-temperature water-cooling control system cools an airtight box of the furnace top by controlling a mode of matching work among the water inlet pipeline, the cooling mechanism and the water return pipeline, specifically detects the water temperature in the water inlet pipeline in real time through the first water thermometer, feeds back a detection result to the control system, and controls the opening and closing of the cooling mechanism through the control system. By adopting the control system, the problems of poor cooling performance, unstable cooling, large waste water discharge, low automation degree and high failure rate caused by the traditional water cooling device in the prior art are effectively solved, the cooling capacity is improved, the cooling performance is more stable, the waste water discharge is reduced, and the purposes of automatic control and reduction of the failure rate of the furnace top are achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic connection diagram of the overall structure of a furnace top low-temperature water-cooling control device provided by the embodiment of the application.

Reference numerals: 1-a water inlet pipeline; 11-a water tank; 12-a pump group; 121-a first electrical pump; 122-a second electrical pump; 13-a water cooling unit; 131-an evaporator; 132-a condenser; 133-condenser electric control valve; 14-a gas tight box; 15-a first water thermometer; 16-a water ingress measurement component; 161-a second water temperature meter; 162-a pressure gauge; 163-water inflow meter; 2-a cooling mechanism; 21-secondary cold water pipeline; 211-two cold water inlet pipelines; 212-two cold water return pipelines; 213-a valve; 22-a cooler; 221-an electric ball valve; 3-a water return pipeline; 4-a control system; 5-a gas return line; 51-a butterfly valve; 6-water supplement pipeline; 61-a liquid level meter; 62-an electrically operated valve; 63-a check valve; 64-flow meter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1, the furnace top low-temperature water-cooling control system provided by the embodiment of the invention comprises a water inlet pipeline 1, a cooling mechanism 2, a water return pipeline 3 and a control system 4.

The water inlet pipeline 1 is provided with a water tank 11 which is connected in sequence and can store high-temperature water flowing out of an airtight box 14, a pump unit 12 which pressurizes the water in the water tank 11, a water cooling unit 13 which cools the water in the pipeline, and an airtight box 14 which is arranged on the top of the furnace and is used for high-temperature operation.

The return water pipeline 3 is communicated with the airtight box 14 and the water tank 11 and forms a circulating pipeline system with the water inlet pipeline 1, so that the problems that water consumption is large and cooled water cannot be recycled due to high cooled water temperature in the cooling process are solved, and the utilization rate of energy is improved.

The bottom of the water tank 11 is also provided with a drain pipe, the drain pipe is provided with a valve body, the drain pipe can be communicated with other water pipelines, hot water in the water tank 11 can be utilized, the purpose of saving energy is achieved, and reasonable utilization of water resources is guaranteed.

The cooling mechanism 2 is arranged on the water inlet pipeline 1 and is respectively communicated with the pump unit 12 and the water cooling unit 13, and in addition, a first water thermometer 15 for detecting and monitoring the cooling medium water flowing out of the water tank 11 in real time is also arranged on the water inlet pipeline 1 between the pump unit 12 and the water cooling unit 13; the first water temperature meter 15 uploads the measured temperature of the cooling medium water, i.e., the cooling water, to the control system 4 in real time, the control system 4 compares the measured temperature with a preset temperature value, and determines whether the basic cooling adjustment can adjust the water temperature to a preset value, and if the basic cooling adjustment cannot adjust the cooling water to the preset value, the cooling medium in the cooler 22 needs to be replaced by the secondary cooling water. Forced cooling of the cooling water is required if the temperature of the water in the pipeline is too high. The basic cooling regulation means that the cooler 22 and the evaporator 131 on the water inlet pipeline 1 perform low-temperature cooling treatment on the medium water, namely cooling water, in the water inlet pipeline 1 by using the heat exchange principle.

The control system 4 is electrically connected with the cooling mechanism 2 and the first water temperature meter 15 respectively, and can control the opening and closing of the cooling mechanism 2 according to the temperature fed back by the first water temperature meter 15. The turning on of the cooling mechanism 2 refers to the replacement of the cooling medium in the cooler 22 and the heat exchange with the condenser 132 and the compressor; the closing of the cooling mechanism 2 means that the cooling medium in the cooler 22 is not replaced and that the condenser 132 and the compressor are not exchanged more heat.

The embodiment of the invention provides a furnace top low-temperature water cooling control system and a control method thereof.A water inlet pipeline 1 and a water return pipeline 3 are arranged around an airtight box 14 of a furnace top, and when water circulates in the pipelines, heat in the airtight box 14 is taken out through medium water, so that the aim of cooling the airtight box 14 of the furnace top is fulfilled. In addition, the furnace top low-temperature water cooling control system is also provided with a cooling mechanism 2 and a water cooling unit 13 for ensuring the cooling stability of the furnace top low-temperature water cooling control system; the furnace top low-temperature water-cooling control system cools the airtight box 14 of the furnace top in a mode of controlling the cooperation between the water inlet pipeline 1, the cooling mechanism 2 and the water return pipeline 3, specifically detects the water temperature in the water inlet pipeline in real time through the first water thermometer, feeds back a detection result to the control system, and controls the opening and closing of the cooling mechanism through the control system. By adopting the control system, the problems of poor cooling performance, unstable cooling, large waste water discharge, low automation degree and high failure rate caused by the traditional water cooling device in the prior art are effectively solved, the cooling capacity is improved, the cooling performance is more stable, the waste water discharge is reduced, and the purposes of automatic control and reduction of the failure rate of the furnace top are achieved.

The cooling system carries out data detection on the cooling water in the water inlet pipeline 1 through the first water temperature meter 15, and then carries out analysis through the control system 4 and regulates and controls the cooling work of the pipeline, so that the automatic operation function of the cooling system can be realized.

Specifically, the pump unit 12 pressurizes the water in the water tank 11, the water in the water tank 11 obtains certain power, and flows into the airtight box 14 after being measured by the first water temperature meter 15 arranged on the water inlet pipeline 1 and cooled by the water cooling unit 13; the medium water after heat exchange of the airtight box 14 flows into the water tank 11 through the water return pipeline 3, and the water tank 11 stores the cooling water for the next use of cooling the airtight box 14; the first water temperature meter 15 uploads the measured data to the control system 4, and the control system 4 further cools and adjusts the water in the water inlet pipeline 1 by adjusting and controlling the working state of the cooling mechanism 2, so that the automatic control function of the water cooling control system is realized.

As shown in fig. 1, in the preferred embodiment, the water chiller unit 13 includes an evaporator 131, and both ends of the evaporator 131 are respectively connected to the pump unit 12 and the airtight box 14.

The evaporator 131 performs low-temperature treatment on the cooling medium water flowing through the water inlet pipeline 1 by using the principle that the coolant absorbs heat from the outside to gasify the coolant, thereby achieving the purpose of cooling the cooling water. Specifically, the pump unit 12 pressurizes the cooling water in the water tank 11, sends the water in the water tank 11 into the water inlet line 1, and the first water temperature gauge 15 measures the temperature of the water in the water inlet line 1, and then cools the water by the cooling mechanism 2 (specifically, the cooler 22 in the cooling mechanism 2) provided on the water inlet line 1, and further cools the water by the evaporator 131 provided on the water inlet line 1.

In addition, the water inlet pipeline 1 is also provided with a water inlet measuring assembly 16, the water inlet measuring assembly 16 comprises a water inlet flow meter 163, a second water temperature meter 161 and a pressure meter 162, the water inlet flow meter 163, the second water temperature meter 161 and the pressure meter 162 jointly detect various numerical values of the cooled cooling water, and the detected cooling water flows into the airtight box 14 and takes heat out of the airtight box 14; the cooling water with the temperature at this time is introduced into the water tank 11 through the return line 3 to be stored for the next cooling of the airtight box 14. The evaporator 131 cools the cooling water in the water inlet line 1 when the cooling water in the line is below a first temperature (hereinafter referred to as T)₁) Only the evaporator 131 needs to be started to cool the water in the water inlet pipeline 1 by using the heat exchange principle. The basic cooling function of the furnace top low-temperature water cooling control system is ensured.

Wherein the second water temperature gauge 161 is used for detecting and monitoring the temperature value of the cooled cooling water in the water inlet pipeline 1, the pressure gauge 162 is used for detecting and monitoring the pressure value of the cooling water in the water inlet pipeline 1, and the water inlet flow meter 163 is used for detecting and monitoring the flow rate of the cooling water in the water inlet pipeline 1. The water inlet measuring component 16 uploads the measured value to the control system 4, and the control system 4 monitors the temperature, pressure and flow of the cooling water in the pipeline in real time, so as to ensure that the water temperature, water pressure and water flow in the pipeline are kept in a stable state.

The second water temperature gauge 161, the pressure gauge 162 and the water inlet flow meter 163 are electrically connected to the control system 4. The water inlet pipeline 1 is provided with a water inlet measuring component 16, and the water inlet measuring component 16 uploads measured data in the pipeline to the control system 4. The control system 4 integrates and processes the received data, and further controls the working state of the components in each loop, so as to realize intelligent and efficient cooling operation. When the measured value of the water inlet measuring assembly 16 changes, the control system 4 regulates and controls the assemblies on the pipeline and ensures that the cooling work is normally and orderly carried out. When the data are abnormal, the control system 4 gives an alarm to prevent the whole control system 4 from being damaged and loss is caused to production operation, so that the fault rate of the furnace top low-temperature water cooling control system is reduced to a great extent.

In addition, the pipes at both ends of the evaporator 131 are connected by a backup pipe, and a backup valve is provided on the backup pipe, and when the evaporator 131 malfunctions, the backup pipe is turned on by opening the backup valve. The whole water cooling system can work normally, and the orderly proceeding of cooling work is further ensured.

As shown in fig. 1, in a preferred embodiment, the water chiller unit 13 further includes a compressor, and the compressor can cool down the water chiller unit 13. When the water chiller 13 cools the cooling water at low temperature, the compressor and the two cooling water are required to perform cooling operation at the same time, so as to reduce the influence of the external working environment on the cooling water cooling temperature, and further ensure the continuity and stability of the cooling performance of the cooling control system in the cooling process.

As shown in fig. 1, in the preferred embodiment, the water chiller 13 further includes a condenser 132, the condenser 132 is connected to the cooling mechanism 2, and the condenser 132 is electrically connected to the control system 4. Since the evaporator 131 needs to perform a continuous and long-time cooling operation on the cooling water, the temperature of the evaporator 131 itself increases as the operation time increases, and at this time, the cooling effect in the cooling control system gradually deteriorates, and the cooling system cannot even cool the cooling water. When the temperature in the evaporator 131 is too high, the cooling effect of the cooling control system is not obvious, and therefore, the condenser 132, the evaporator 131 and the compressor are required to cooperate together to realize the cooling operation.

During the high-temperature production operation, the high-temperature water in the pipeline is easily decomposed into CaCO by heating₃And Ca (HCO)₃) The scale can be accumulated in the pipeline for a long time to block the pipeline, so that the pipeline is deformed, blocked and even broken; apparatus and waterFaults such as furnace top pressure breakdown and cooling water overflow caused by system high-temperature fault and backwater blockage; on the other hand, the environment around the cooling system is uncontrollable, and the cooling effect of the cooling system is also affected, especially the cooling water is greatly affected by the environmental change, so that the cooling effect is unstable. The low-temperature cooling reduces the working temperature of the airtight box 14, prolongs the service life of the airtight box 14, reduces the material distribution failure rate of the blast furnace, reduces the working temperature of the water cooling system, reduces the high-temperature damage, sealing damage and other failures of elements, and improves the working efficiency of the water cooling system. Therefore, in addition to the basic cooling operation, the respective cooling modules need to be cooled down, and therefore, the condenser 132 is provided. Specifically, a part of the secondary cooling water enters the condenser 132 for heat exchange, and after being detected by a secondary cooling water flow meter on the secondary cooling water return pipe 212, the secondary cooling water return water with a certain temperature passes through the electric ball valve 221 and then is discharged from the pipe.

As shown in fig. 1, in the preferred embodiment, the cooling means 2 comprises a secondary cold water line 21 for passing secondary cold water and a cooler 22 capable of heat exchange; the cooler 22 is disposed on the water inlet pipeline connecting the pump unit 12 and the evaporator 131, and cools the cooling water.

The secondary cold water pipeline 21 comprises a secondary cold water inlet pipeline 211 and a secondary cold water return pipeline 212; and the secondary cold water inlet pipeline 211 and the secondary cold water return pipeline 212 are both provided with temperature detection components, and the temperature detection components are electrically connected with the control system 4 and used for monitoring and detecting the temperature of the secondary cold water inlet water and the temperature of the secondary cold water return water in the pipelines.

The two cold water inlet pipelines 211 are respectively communicated with the water inlet of the cooler 22 and the water inlet of the condenser 132, valves 213 are respectively arranged on the two cold water inlet pipelines 211 connected with the water inlet of the cooler 22 and the water inlet of the condenser 132, and a condenser electric control valve 133 is arranged on a two cold water return pipeline 212 connected with the condenser 132; when the cooling water temperature is too high, the condenser 132 starts to operate by opening the condenser electric control valve 133, and the compressor is also in an operating state. The evaporator, secondary cooling water, compressor and condenser are cooled simultaneously.

The two cold water return pipelines 212 are respectively communicated with the water outlet of the cooler 22 and the water outlet of the condenser 132, a condenser electric control valve 133 is arranged on the two cold water return pipelines 212 connected with the water outlet of the condenser 132, and an electric ball valve 221 is arranged on the two cold water return pipelines 212 connected with the water outlet of the cooler 22. When the basic cooling cannot meet the cooling requirement, the cooling medium in the cooler 22 needs to be replaced, the electric ball valve 221 needs to be opened to connect the two cold water pipelines, and the electric control valve 133 of the condenser 132 is in a closed state; when the temperature of the cooling water reaches a certain high temperature, the control system controls the electric control valve 133 of the condenser to be opened, a part of the second cooling water enters the condenser 132 for heat exchange, and the compressor is also opened at the moment for forced cooling work. The secondary cold water inlet pipeline 211 and the secondary cold water return pipeline 212 can both circulate, secondary cold water enters the pipeline from the secondary cold water inlet pipeline 211, and a part of secondary cold water flows through the cooler 22 to replace a cooling medium in the cooler 22; the other part of the two-cold water flows into the condenser 132 through the two-cold water inlet pipeline 211 for heat exchange, and then flows out after being detected by a flow meter on the two-cold water return pipeline 212, and the compressor is matched for cooling work. Further, the working temperature of the water cooling unit 13 is reduced, and the cooling operation can be effectively and stably performed.

As shown in fig. 1, in a preferred embodiment, the pump unit 12 comprises a first electrical pump 121 and a second electrical pump 122, and the first electrical pump 121 and the second electrical pump 122 are arranged in parallel on the water inlet line 1. The pump unit 12 pressurizes the cooling water in the water tank 11, so that the pressure and the flow rate of the inflow water in the water inlet pipeline 1 are improved, the flow of the water in the water inlet pipeline 1 is increased, the cooling capacity of the system is improved, the inflow fluctuation caused by the pressure fluctuation in the water tank 11 is reduced, and the stability of the inflow water is ensured.

The pump group 12 adopts a one-use-one-standby working mode, ball valves are arranged at the front and the rear of the first electrical pump 121 and the second electrical pump 122, online replacement of the electrical pumps can be realized by closing the ball valves, and further normal work of the other air pump is not influenced; specifically, a first valve group is disposed before and after the first electric pump 121, and a second valve group is disposed before and after the second electric pump 122. In the production process, the first electrical pump 121 and the first valve group are in an open state, the second electrical pump 122 and the second valve group are in a closed state, when the first electrical pump 121 breaks down, the first valve group is closed, the second valve group is opened, and the second electrical pump 122 is in a working state. The on-line replacement of the electric pump can be realized through the valve group by adopting a one-use one-standby working mode, and the ordered operation of production work is ensured.

As shown in fig. 1, in the preferred embodiment, a return pipe 5 is further included, the return pipe 5 connects the airtight box 14 and the return pipe 3, and a butterfly valve 51 is disposed on the return pipe 5. In the process of water return, the water return contains gas, and the gas entering the water tank 11 can affect the water storage work in the water tank 11, so that the gas in the water return needs to be separated out. The water-cooling control system is provided with a gas return pipeline 5, one end of the gas return pipeline 5 is communicated with the top of the airtight box 14, and the other end of the gas return pipeline 5 is communicated with the water return pipeline 3. The return gas line 5 is provided with a butterfly valve 51 for separating gas from liquid. Specifically, in the water return process, the gas in the gas return pipeline 5 moves close to the butterfly valve 51 under the action of buoyancy, and the butterfly valve 51 is opened to release the gas into the airtight box 14, so that gas-water separation is realized.

A return water temperature meter capable of measuring the temperature of return water is arranged at the position, close to the water tank 11, of the return water pipeline 3, and cooling water with heat in the return water pipeline 3 flows into the water tank 11 after being detected by the return water temperature meter. The backwater water temperature meter is electrically connected with the control system 4, the backwater water temperature meter transmits the measured value to the control system 4, and the control system 4 processes the received data, further adjusts the cooling work in the pipeline and realizes the automatic control of the automatic pipeline cooling system.

As shown in fig. 1, in the preferred embodiment, it further comprises a water replenishing pipe 6 and a liquid level meter 61; the liquid level meter 61 is arranged on the water tank 11, and the liquid level meter 61 is electrically connected with the control system 4; the two ends of the water replenishing pipeline 6 are respectively communicated with the water source and the water tank 11, the water replenishing pipeline 6 is provided with an electric valve 62, and the electric valve 62 is electrically connected with the control system 4. The level gauge 61 is used to measure the value of the liquid level in the water tank 11, and the level gauge 61 communicates the value of the liquid level in the water pipe to the control system 4. When the liquid level in the water tank 11 is lower than the minimum value of the liquid level set in the control system 4, the electric valve 62 is controlled in the control system 4 to be opened, water enters the water replenishing pipeline 6, and the newly added cooling water flows into the water tank 11 after being measured by the flow meter 64 arranged on the water replenishing pipeline 6, so that the water replenishing work of the water tank 11 is completed.

The flow meter 64 detects and monitors the water entering the water replenishing line 6. When the data measured and uploaded by the flowmeter 64 in the water supplementing pipeline 6 shows that the water supplementing amount reaches a certain value, the control system 4 closes the electric valve 62 to stop the water supplementing 1 to work, so that the furnace top low-temperature water cooling control system realizes the function of automatic water supplementing.

Further, a check valve 63 and a flow meter 64 are provided in the water replenishing pipe 6, and the flow meter 64 is electrically connected to the control system 4. Check valve 63 sets up on water supply pipe 6, and check valve 63 sets up between water pitcher 11 and flowmeter 64 for the phenomenon of refluence appears in the water in water supply pipe 6, when the moisturizing stop is electric valve 62 and closes promptly in addition, can supplement water pipe 6's leakproofness, makes the water in the water supply pipe 6 can not reveal.

The embodiment of the invention also provides a control method of the furnace top low-temperature water cooling control system, which comprises the following steps:

starting a pump set 12, a water cooling unit 13 and an airtight box 14, and communicating a water inlet pipeline 1 and a water return pipeline 3;

setting a temperature range value T in a control system₁～T₂Wherein T is₁＜T₂；

Reading the temperature T of the first water thermometer 15 by the control system₃And will T₃And setting a temperature range value T in the control system₁～T₂The comparison is made to control the opening and closing of the cooling mechanism 2.

Specifically, the control of the cooling system has the following three cases:

when T is₃＜T₁When the electric ball valve 221 is closed, the secondary cooling water in the cooling system is cut off, the condenser 132 and the compressor are in a closed state, and the cooling system passes through the cooler 22 and the evaporator 13 in sequence through basic heat dissipationAnd cooling, namely cooling the medium water by the cooler 22 by virtue of a cooling medium of the cooler.

When T is₁＜T₃＜T₂When the cooling medium is cooled, the electric ball valve 221 is opened, the condenser electric control valve 133 is closed, the condenser 132 and the compressor are in a closed state, and the secondary cooling water flows through the cooler 22 to cool the cooling medium in the cooler 22 through replacement; specifically, the control system 4 controls the electric ball valve 221 to be in an open state, the valve 213 is also in an open state, the secondary cooling water flows into the cooler 22 through the secondary cooling water inlet pipeline 211, the cooling medium water in the cooler 22 is replaced, and the replaced cooling medium water flows out through the secondary cooling water return pipeline 212

When T is₃＞T₂At the moment, the temperature of the working medium is too high, the compressor of the water-cooling unit 22 is required to forcibly cool the cooling water, the electric ball valve 221 and the electric ball valve 133 are simultaneously opened, the two kinds of cooling water are divided into two parts, one part flows through the cooler 22 to perform heat exchange cooling on the working medium and flows out through the 212, the other part enters the condenser 132 and flows out through the electric ball valve 133, the condenser 132 is simultaneously started, and at the moment, the heat exchange cooling of the working medium water through the cooler 22 and the forced cooling of the condenser 132 and the compressor of the water-cooling unit 13 are simultaneously performed.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.