Effect improving device of acetylene booster

Abstract

The utility model relates to the technical field of acetylene boosting equipment, in particular to an efficiency improving device of an acetylene booster, which comprises a booster body, a gas-liquid separation device and a liquid storage tank, the booster body is provided with a first output pipeline communicated with the gas-liquid separation device, and the gas-liquid separation device is provided with a second output pipeline. The liquid storage tank is provided with a boosting supply pipeline and a liquid supply pipeline, the boosting supply pipeline is communicated with a pump in the booster body, and the liquid supply pipeline is provided with a first control valve. The acetylene booster has the effect of improving the use efficiency of the acetylene booster.

Description

Technical Field

[0001] The utility model relates to the technical field of acetylene booster equipment, in particular to an efficiency-enhancing device for an acetylene booster. Background Art

[0002] In the production process of acetylene gas, the acetylene gas produced from the generation process needs to be compressed for storage and transportation after being cooled in the mud washing tower and cooling tower. The acetylene is pressurized by using an acetylene booster. Because most existing acetylene boosters require liquid as the working fluid to pressurize acetylene, the compressed acetylene needs to be separated into gas and liquid to ensure the purity of the acetylene.

[0003] During the operation of the acetylene booster, the operator needs to add industrial water or other liquids as working fluid into the pump chamber of the acetylene booster and supply water in time. During this process, the booster cannot work. Due to frequent water supply, certain delays in manual operation, and the high failure rate of the acetylene booster caused by human misoperation, the utilization efficiency of the acetylene booster still has room for improvement. Utility Model Content

[0004] In order to improve the utilization efficiency of an acetylene booster, the present application provides an efficiency improvement device for an acetylene booster.

[0005] The efficiency improvement device of an acetylene booster provided in the present application adopts the following technical solution:

[0006] An efficiency improvement device for an acetylene booster comprises a booster body and a gas-liquid separation device, wherein the booster body is provided with a first output pipeline communicating with the gas-liquid separation device, and the gas-liquid separation device is provided with a second output pipeline. The invention also comprises a liquid storage tank, wherein the liquid storage tank is provided with a booster supply pipeline and a liquid supply pipeline, wherein the booster supply pipeline is communicated with a pump in the booster body, and the liquid supply pipeline is provided with a first control valve.

[0007] By adopting the above technical scheme, in order to facilitate the liquid supply, the liquid level storage tank can be set at a position higher than the booster body. The liquid supply pipeline is connected to the pump body of the industrial liquid source. After the pump in the booster body is started, the liquid storage tank continuously supplies liquid to the booster body through the booster supply pipeline to ensure the normal operation of the booster. At the same time, the acetylene compressed by the booster enters the gas-liquid separation device through the first output pipeline for gas-liquid separation. The separated high-purity acetylene is discharged from the gas-liquid separation device through the second output pipeline to complete the overall process. The staff does not need to perform complicated water replenishment work, but only needs to pay attention to the liquid level in the liquid storage tank. When the liquid level in the liquid storage tank is too low, the first control valve is promptly switched to supply water to the liquid storage tank, thereby reducing the time of stopping the booster and waiting for manual operation when supplying water, thereby improving the utilization efficiency of the acetylene booster.

[0008] Preferably, it further comprises a controller, which is connected to the first control valve signal, and the liquid storage tank is provided with a liquid level sensor connected to the controller signal, and the controller is used to control the opening and closing of the first control valve according to the detection data of the first liquid level sensor.

[0009] By adopting the above technical solution, the liquid level of the liquid storage tank is controlled by the controller, and the liquid level sensor measures the liquid level of the liquid storage tank. When the liquid level in the liquid storage tank is too low, the controller opens the first control valve, and supplies liquid to the liquid storage tank through the liquid supply pipeline to ensure sufficient liquid, so that the liquid storage tank can continuously supply liquid to the booster body, ensuring stable and timely water supply, further reducing manual operation, reducing the probability of the acetylene booster stopping to wait for water supply, and improving the utilization efficiency of the acetylene booster.

[0010] Preferably, the gas-liquid separation device is provided with a liquid recovery pipeline, which is communicated with the liquid storage tank. The liquid recovery pipeline is provided with a second control valve connected to the controller signal, and the controller is used to control the opening and closing of the second control valve according to the detection data of the first liquid level sensor.

[0011] By adopting the above technical solution, the liquid separated by the gas-liquid separation device can be recycled and enter the liquid storage tank through the liquid recovery pipeline for recycling, thereby reducing energy consumption. When the liquid level in the liquid storage tank is too high, the controller closes the second control valve and temporarily stores the separated liquid in the gas-liquid separation device to avoid recycling waste.

[0012] Preferably, the liquid storage tank is provided with a filter, and the liquid recovery pipeline and the liquid supply pipeline are both connected to the filter.

[0013] By adopting the above technical solution, the filter filters the liquid entering the liquid storage tank through the liquid recovery pipeline and the liquid supply pipeline, reducing the possibility of debris entering the liquid storage tank and causing blockage or damage, thereby improving overall durability.

[0014] Preferably, the liquid storage tank is provided with a temperature sensor communicated with the controller signal, the boost supply pipeline is provided with a cooling pipeline, both ends of the cooling pipeline are communicated with the boost supply pipeline, the cooling pipeline is provided with a cooling device, the cooling pipeline is provided with a third control valve connected to the controller signal, the third control valve is arranged on the cooling pipeline on the side of the cooling device close to the liquid storage tank, the boost supply pipeline is provided with a fourth control valve communicated with the controller signal, the fourth control valve is arranged between both ends of the cooling pipeline, and the controller is used to control the opening and closing of the third control valve and the fourth control valve according to the detection data of the temperature sensor.

[0015] By adopting the above technical solution, the temperature of the supplied liquid will continue to rise during use in the booster body. Excessive temperature will affect the boosting efficiency. Therefore, the temperature of the supplied liquid needs to be maintained within a relatively low range. The temperature sensor detects the temperature of the liquid in the liquid storage tank. When the liquid temperature is higher than the set value, the controller closes the fourth control valve and opens the third control valve. The liquid in the liquid storage tank enters the cooling pipeline and the cooling device through the boosting supply pipeline. The liquid is cooled by the cooling device so that the liquid entering the booster body maintains a relatively low temperature when entering the booster body. When the liquid temperature is lower than the set value of the temperature sensor, the controller closes the third control valve and opens the fourth control valve. The liquid enters the booster body through the boosting supply pipeline, thereby further improving the convenience of use and improving the efficiency of the booster body in boosting acetylene.

[0016] Preferably, the cooling supply pipeline is communicated with the liquid supply pipeline, the cooling device is provided with a cooling supply pipeline and a cooling exhaust pipeline, the cooling exhaust pipeline is communicated with the liquid supply pipeline between the cooling supply pipeline and the liquid storage tank, the first control valve is arranged between the cooling exhaust pipeline and the cooling supply pipeline, the cooling supply pipeline is provided with a first cooling valve connected to a controller signal, the cooling exhaust pipeline is provided with a second cooling valve connected to a controller signal, and the controller is used to control the opening and closing of the first cooling valve and the second cooling valve.

[0017] By adopting the above technical solution, the cooling device is a water cooling device. When the third control valve is opened, the liquid is water-cooled, and the controller starts the first cooling valve and the second cooling valve and closes the first control valve. At this time, the liquid source in the liquid supply pipeline enters the cooling device through the cooling supply pipeline for cooling, and the cooled water-cooled liquid enters the liquid supply pipeline through the cooling discharge pipeline and enters the liquid storage tank for recycling, thereby improving control efficiency and reducing energy consumption.

[0018] Preferably, the liquid storage tank comprises a cold liquid storage tank and a hot liquid storage tank which are connected to each other, the liquid level sensor and the temperature sensor are both arranged in the cold liquid storage tank, the boost supply pipeline is connected to the cold liquid storage tank, and the liquid supply pipeline is connected to the hot liquid storage tank.

[0019] By adopting the above technical solution, a cold liquid storage tank and a hot liquid storage tank are set up, and the recycled liquid is collected in the hot liquid storage tank and statically cooled. After the liquid level in the hot liquid storage tank reaches a certain height, the liquid enters the cold liquid storage tank, avoiding the recovered liquid with a certain temperature directly mixing with the original liquid, thereby relatively lowering the liquid temperature, reducing cooling consumption, and saving energy.

[0020] Preferably, the liquid supply pipeline is provided with a cold liquid supply pipeline and a hot liquid supply pipeline, the cold liquid supply pipeline is communicated with a cold liquid storage tank, the hot liquid supply pipeline is communicated with a hot liquid storage tank, the cold liquid supply pipeline is provided with a cold liquid supply valve connected to a controller signal, the hot liquid supply pipeline is provided with a hot liquid supply valve connected to a controller signal, and the controller is used to control the opening and closing of the cold liquid supply valve and the hot liquid supply valve.

[0021] By adopting the above technical solution, when the first control valve is opened, the controller controls the cold liquid supply valve to open, so that the liquid from the industrial liquid source enters the cold liquid storage tank through the cold liquid supply pipeline. When the cooling discharge valve is opened, the controller controls the hot liquid supply valve to open, so that the discharge liquid of the cooling device enters the hot liquid storage tank through the hot liquid supply pipeline, thereby distinguishing between cold and hot liquids, thereby improving the efficiency of temperature utilization and reducing energy waste caused by repeated cooling.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting a booster body, a liquid storage tank, a controller, a booster supply pipeline, a liquid supply pipeline, a first control valve and a liquid level sensor, the booster supply pipeline connects the pump in the booster body and the liquid storage tank to achieve continuous water replenishment. The controller controls the opening and closing of the first control valve according to the measurement data of the liquid level sensor. When the liquid level in the liquid storage tank is too low, the first control valve is opened, and liquid is replenished through the liquid supply pipeline to ensure that the liquid level in the liquid storage tank is maintained at a certain height, so that there is no need for manual adjustment of water replenishment. Continuous water replenishment is achieved through automatic control, reducing manual operation, and at the same time reducing the time for the booster to stop waiting for water supply, thereby improving the use efficiency of the acetylene booster;

[0024] 2. By setting a temperature sensor, a cooling pipeline, a cooling device, a third control valve and a fourth control valve, when the temperature sensor reading is lower than the set value, the controller starts the fourth control valve and closes the third control valve, and the liquid in the liquid storage tank directly enters the booster pump body through the boost supply pipeline for water replenishment. When the temperature sensor reading is higher than the set value, the controller starts the third control valve and closes the fourth control valve, and the liquid enters the cooling pipeline through the boost supply pipeline and enters the cooling device for cooling before entering the booster pump body, ensuring that the liquid entering the booster is kept at a relatively low temperature, reducing the possibility that the liquid temperature is too high to affect the acetylene boosting efficiency, and further improving the booster efficiency;

[0025] 3. By setting a cooling supply pipeline, a cooling discharge pipeline, a first cooling valve and a second cooling valve, when the third control valve is opened for water cooling, the controller opens the first cooling valve and the second cooling valve and closes the first control valve at the same time. At this time, the liquid supply pipeline in the front section of the first control valve is connected to the cooling supply pipeline, and the liquid with a lower temperature in the industrial liquid source is transported to the cooling device for cooling. The cooling liquid discharged after cooling enters the liquid supply pipeline in the rear section of the first control valve through the cooling discharge pipeline and enters the liquid storage tank for storage, thereby saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of an efficiency improvement device for an acetylene booster provided in an embodiment of the present application.

[0027] Figure 2 It is a control block diagram of an efficiency improvement device for an acetylene booster provided in an embodiment of the present application.

[0028] Explanation of the reference numerals: 1. booster body; 11. first output pipeline; 2. gas-liquid separation device; 21. second output pipeline; 22. liquid recovery pipeline; 221. second control valve; 3. liquid storage tank; 31. cold liquid storage tank; 32. hot liquid storage tank; 33. filter; 34. booster supply pipeline; 341. fourth control valve; 4. liquid supply pipeline; 41. first control valve; 42. cold liquid supply pipeline; 421. cold liquid supply valve; 43. hot liquid supply pipeline; 431. hot liquid supply valve; 5. cooling pipeline; 51. third control valve; 6. cooling device; 61. cooling supply pipeline; 611. first cooling valve; 62. cooling discharge pipeline; 621. second cooling valve; 7. controller; 71. liquid level sensor; 72. temperature sensor. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] The present application embodiment discloses an efficiency improvement device for an acetylene booster. Figure 1 and Figure 2, which comprises a booster body 1, a gas-liquid separation device 2, a liquid storage tank 3 and a controller 7. The booster body 1 is fixedly provided with a first output pipeline 11 communicating with the gas-liquid separation device 2, and the gas-liquid separation device 2 is fixedly provided with a second output pipeline 21. The liquid storage tank 3 is fixedly provided with a liquid supply pipeline 4 communicating with an industrial liquid source pump body, and the liquid supply pipeline 4 is provided with a first control valve 41 connected to the signal of the controller 7, and the liquid storage tank 3 is fixedly provided with a boost supply pipeline 34 connected to the pump body in the booster body 1. The gas-liquid separation device 2 is provided with a liquid recovery pipeline 22 communicating with the liquid storage tank 3 at the internal pump body, and the liquid recovery pipeline 22 is provided with a second control valve 221 connected to the signal of the controller 7. A liquid level sensor 71 connected to the signal of the controller 7 is provided in the liquid storage tank 3, and the controller 7 is used to control the opening and closing of the first control valve 41 and the second control valve 221 according to the detection data of the first liquid level sensor 71. After the pump of the booster body 1 is turned on, the liquid storage tank 3 continuously supplies water through the booster supply pipeline 34. When the liquid level sensor 71 detects that the liquid level in the liquid storage tank 3 is too low, the controller 7 opens the first control valve 41 to supply liquid to the liquid storage tank 3 through the liquid supply pipeline 4. The whole is automatically controlled, and the booster body 1 does not need to stop and wait for manual water replenishment, thereby improving the overall utilization efficiency.

[0031] To improve the efficiency of acetylene booster, refer to Figure 1 and Figure 2 A temperature sensor 72 connected to the controller 7 signal is provided in the liquid storage tank 3, a cooling pipeline 5 is fixedly provided on the boost supply pipeline 34, both ends of the cooling pipeline 5 are fixedly connected to the boost supply pipeline 34, a cooling device 6 is provided on the cooling pipeline 5, a third control valve 51 connected to the controller 7 signal is provided on the cooling pipeline 5 between the cooling device 6 and the liquid storage tank 3, a fourth control valve 341 connected to the controller 7 signal is provided on the boost supply pipeline 34 between the two ends of the cooling pipeline 5, and the controller 7 is used to control the opening and closing of the third control valve 51 and the fourth control valve 341 according to the detection data of the temperature sensor 72. When the detection value of the temperature sensor 72 is lower than the setting, the controller 7 opens the fourth control valve 341 and closes the third control valve 51, and the liquid enters the booster body 1 through the boost supply pipeline 34. When the liquid temperature is higher than the set value, the controller 7 closes the fourth control valve 341 and opens the third control valve 51, and the liquid passes through the cooling pipeline 5 and enters the cooling device 6 for cooling, so that the liquid entering the booster body 1 maintains a lower temperature, reduces the possibility that the liquid temperature is too high to affect the acetylene boosting efficiency, and further improves the booster efficiency.

[0032] In order to save resources, refer to Figure 1 and Figure 2A cooling supply pipeline 61 and a cooling discharge pipeline 62 are fixedly arranged on the side wall of the cooling device 6. Both the cooling supply pipeline 61 and the cooling discharge pipeline 62 are connected to the liquid supply pipeline 4. The connection point between the cooling discharge pipeline 62 and the liquid supply pipeline 4 is located between the connection point between the cooling supply pipeline 61 and the liquid supply pipeline 4 and the liquid storage tank 3. The first control valve 41 is arranged between the connection point between the cooling discharge pipeline 62 and the liquid supply pipeline 4 and the connection point between the cooling supply pipeline 61 and the liquid supply pipeline 4. The cooling supply pipeline 61 is provided with a first cooling valve 611 connected to the signal of the controller 7, and the cooling discharge pipeline 62 is provided with a second cooling valve 621 connected to the signal of the controller 7. The controller 7 is used to control the opening and closing of the first cooling valve 611 and the second cooling valve 621. When the third control valve 51 is opened, the controller 7 starts the first cooling valve 611 and the second cooling valve 621 and closes the first control valve 41. The liquid supply pipeline 4 in front of the first control valve 41 continuously supplies liquid to enter the cooling device 6 through the cooling supply pipeline 61 for cooling, and after cooling, the liquid enters the liquid storage tank 3 through the cooling discharge pipeline 62 and the liquid supply pipeline 4 for recycling, thereby improving control efficiency and reducing energy consumption.

[0033] To reduce energy consumption, refer to Figure 1 and Figure 2The liquid storage tank 3 includes a cold liquid storage tank 31 and a hot liquid storage tank 32 which are in communication with each other. The hot liquid storage tank 32 is located higher than the cold liquid storage tank 31. The liquid level sensor 71 and the temperature sensor 72 are both arranged in the cold liquid storage tank 31. The top of the cold liquid storage tank 31 and the top of the hot liquid storage tank 32 are both provided with filters 33 for filtering. The boost supply pipeline 34 is in communication with the inside of the cold liquid storage tank 31, and the liquid recovery pipeline 22 is in communication with the filter 33 arranged on the hot liquid storage tank 32. The liquid supply pipeline 4 is provided with a cold liquid supply pipeline 42 and a hot liquid supply pipeline 43 at one end close to the liquid storage tank 3. The cold liquid supply pipeline 42 is in communication with the filter 33 on the cold liquid storage tank 31, and the hot liquid supply pipeline 43 is in communication with the filter 33 on the hot liquid storage tank 32. The cold liquid supply pipeline 42 is provided with a cold liquid supply valve 421 connected to the controller 7 signal, and the hot liquid supply pipeline 43 is provided with a hot liquid supply valve 431 connected to the controller 7 signal. The controller 7 is used to control the opening and closing of the cold liquid supply valve 421 and the hot liquid supply valve 431. When the first control valve 41 is opened, the controller 7 controls the cold liquid supply valve 421 to open, and the liquid at the industrial source with a lower temperature enters the cold liquid storage tank 31 through the cold liquid supply pipeline 42. When the first control valve 41 is closed and the cooling discharge valve is opened, the controller 7 controls the hot liquid supply valve 431 to open, and the liquid discharged from the cooling device 6 enters the hot liquid storage tank 32 through the hot liquid supply pipeline 43. The hot liquid storage tank 32 is used to store the recovered liquid and perform static cooling. The liquid in the hot liquid storage tank 32 enters the cold liquid storage tank 31 after reaching a certain liquid level. By distinguishing between the recovered liquid and the directly supplied liquid, the energy consumption caused by repeated cooling is reduced.

[0034] The implementation principle of the efficiency improvement device of an acetylene booster in the embodiment of the present application is as follows: after the pump body of the booster body 1 is opened, when the value measured by the temperature sensor 72 is lower than the set value, the controller 7 opens the fourth control valve 341 and closes the third control valve 51, and the liquid in the cold liquid storage tank 31 is continuously replenished via the boost supply pipeline 34. When the value measured by the liquid level sensor 71 is lower than the set value, the controller 7 opens the first control valve 41 and the cold liquid supply valve 421, and the pump from the industrial liquid source delivers the liquid into the cold liquid storage tank 31 via the liquid supply pipeline 4 and the cold liquid supply pipeline 42. The system is automatically controlled without manual intervention, and the booster body 1 does not need to be shut down to wait for manual replenishment, thereby improving the use efficiency.

[0035] When the value measured by the temperature sensor 72 is higher than the set value, the controller 7 closes the fourth control valve 341 and opens the third control valve 51. The liquid will pass through the cooling pipe and enter the cooling device 6 for cooling before entering the booster body 1 for use. At the same time, the controller 7 opens the first cooling valve 611, the second cooling valve 621 and the hot liquid supply valve 431. The controller 7 closes the first control valve 41 and the cold liquid supply valve 421. At this time, the liquid supply pipeline 4 of the front section of the first control valve 41 is connected to the cooling supply pipeline 61, and the liquid with a lower supply temperature enters the cooling device 6 for cooling. The cooling liquid discharged after cooling enters the liquid supply pipeline 4 of the rear section of the first control valve 41 through the cooling discharge pipeline 62, enters the hot liquid supply pipeline 43, and then enters the hot liquid storage tank 32 for storage and static heat dissipation. After a sufficient amount of liquid is stored in the hot liquid storage tank 32, it enters the cold liquid storage tank 31 through the pipeline for use, thereby recycling energy and reducing energy consumption.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An efficiency-enhancing device for an acetylene booster, comprising a booster body (1) and a gas-liquid separation device (2), wherein the booster body (1) is provided with a first output pipeline (11) communicating with the gas-liquid separation device (2), and the gas-liquid separation device (2) is provided with a second output pipeline (21), characterized in that: It also includes a liquid storage tank (3), the liquid storage tank (3) is provided with a boost supply pipeline (34) and a liquid supply pipeline (4), the boost supply pipeline (34) is connected to the pump in the booster body (1), and the liquid supply pipeline (4) is provided with a first control valve (41).

2. The efficiency improvement device of an acetylene booster according to claim 1, characterized in that: The invention also comprises a controller (7), wherein the controller (7) is connected to the first control valve (41) by signal, and the liquid storage tank is provided with a liquid level sensor (71) connected to the controller (7) by signal, and the controller (7) is used to control the opening and closing of the first control valve (41) according to the detection data of the first liquid level sensor (71).

3. The efficiency improvement device of an acetylene booster according to claim 2, characterized in that: The gas-liquid separation device (2) is provided with a liquid recovery pipeline (22), the liquid recovery pipeline (22) is communicated with the liquid storage tank (3), the liquid recovery pipeline (22) is provided with a second control valve (221) connected to a controller (7) signal, and the controller (7) is used to control the opening and closing of the second control valve (221) according to detection data of the first liquid level sensor (71).

4. The efficiency improvement device for an acetylene booster according to claim 3, characterized in that: The liquid storage tank (3) is provided with a filter (33), and the liquid recovery pipeline (22) and the liquid supply pipeline (4) are both in communication with the filter (33).

5. The efficiency improvement device for an acetylene booster according to claim 2, characterized in that: The liquid storage tank (3) is provided with a temperature sensor (72) which communicates with the controller (7) signal; the boost supply pipeline (34) is provided with a cooling pipeline (5); both ends of the cooling pipeline (5) are communicated with the boost supply pipeline (34); the cooling pipeline (5) is provided with a cooling device (6); the cooling pipeline (5) is provided with a third control valve (51) which is connected with the controller (7) signal; the third control valve (51) is arranged on the cooling pipeline (5) on the side of the cooling device (6) close to the liquid storage tank (3); the boost supply pipeline (34) is provided with a fourth control valve (341) which communicates with the controller (7) signal; the fourth control valve (341) is arranged between the two ends of the cooling pipeline (5); the controller (7) is used to control the opening and closing of the third control valve (51) and the fourth control valve (341) according to the detection data of the temperature sensor (72).

6. The efficiency improvement device for an acetylene booster according to claim 5, characterized in that: The cooling device (6) is provided with a cooling supply pipeline (61) and a cooling discharge pipeline (62); the cooling supply pipeline (61) is communicated with the liquid supply pipeline (4); the cooling discharge pipeline (62) is communicated with the liquid supply pipeline (4) between the cooling supply pipeline (61) and the liquid storage tank (3); the first control valve (41) is arranged between the cooling discharge pipeline (62) and the cooling supply pipeline (61); the cooling supply pipeline (61) is provided with a first cooling valve (611) connected to a controller (7) signal; the cooling discharge pipeline (62) is provided with a second cooling valve (621) connected to a controller (7) signal; the controller (7) is used to control the opening and closing of the first cooling valve (611) and the second cooling valve (621).

7. The efficiency improvement device of an acetylene booster according to claim 6, characterized in that: The liquid storage tank (3) comprises a cold liquid storage tank (31) and a hot liquid storage tank (32) which are in communication with each other; the liquid level sensor (71) and the temperature sensor (72) are both arranged in the cold liquid storage tank (31); the boost supply pipeline (34) is in communication with the cold liquid storage tank (31); and the liquid supply pipeline (4) is in communication with the hot liquid storage tank (32).

8. The efficiency improvement device for an acetylene booster according to claim 7, characterized in that: The liquid supply pipeline (4) is provided with a cold liquid supply pipeline (42) and a hot liquid supply pipeline (43); the cold liquid supply pipeline (42) is communicated with the cold liquid storage tank (31); the hot liquid supply pipeline (43) is communicated with the hot liquid storage tank (32); the cold liquid supply pipeline (42) is provided with a cold liquid supply valve (421) connected to a controller (7) signal; the hot liquid supply pipeline (43) is provided with a hot liquid supply valve (431) connected to a controller (7) signal; the controller (7) is used to control the opening and closing of the cold liquid supply valve (421) and the hot liquid supply valve (431).

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