An automatic low temperature cold trap water removal system

Abstract

The present application discloses an automatic low-temperature cold trap dewatering system, including a medium-temperature refrigeration cycle system, a low-temperature refrigeration cycle system and a cryogenic liquid precision temperature control cycle system; wherein the medium-temperature refrigeration cycle system and the low-temperature refrigeration cycle system are respectively connected to two heat exchange tubes of an intermediate heat exchanger, and the low-temperature refrigeration cycle system and the cryogenic liquid precision temperature control cycle system are respectively connected to two heat exchange tubes of a low-temperature heat exchange tube; the medium-temperature refrigeration cycle system provides a medium-temperature environment for the low-temperature refrigeration cycle system through an intermediate heat exchanger, and the low-temperature refrigeration cycle system provides a low-temperature environment for the cryogenic liquid precision temperature control cycle system through a low-temperature heat exchanger. Automatic ice melting and automatic drainage are achieved without replacing the cold trap tube, reducing manpower and time costs, so it is simple and convenient to use and has high practical value.

Description

Technical Field

[0001] The present application relates to the technical field of cold trap dehydration, and in particular to an automatic low-temperature cold trap dehydration system. Background Art

[0002] When the existing technology detects greenhouse gases in the atmosphere, it is generally monitored through a special gas monitoring system, through which the components and content of greenhouse gases can be accurately grasped. However, since the greenhouse gases to be monitored contain a certain amount of moisture, the presence of moisture affects the accuracy of gas detection. Therefore, before gas monitoring, it is necessary to remove water from the greenhouse gases so that the detected gas is dry gas, thereby improving the accuracy of the detection value.

[0003] The American FTS ultra-low temperature cold trap method is usually used to remove water from greenhouse gases in the atmosphere. This method is to place the cold trap tube in a -50℃ alcohol stainless steel barrel. When the gas passes through the low-temperature and low-pressure cold trap tube, water condenses in the cold trap tube to achieve the effect of removing water. However, after the cold trap tube has been used for a long time, a lot of ice will accumulate on the inner wall of the cold trap tube, which will affect the amount of gas passing through the cold trap tube. Therefore, the cold trap tube needs to be replaced manually, resulting in increased labor costs. In addition, the original gas path will be disconnected when the cold trap tube is replaced, affecting the continuity of the detection and causing pollution to the gas path. Summary of the invention

[0004] The present application provides an automatic low-temperature cold trap dewatering system, comprising two groups of independent dewatering systems; each group of dewatering systems comprises a medium-temperature refrigeration circulation system, a low-temperature refrigeration circulation system and a low-temperature liquid precision temperature control circulation system; the medium-temperature refrigeration circulation system and the low-temperature refrigeration circulation system are respectively connected to two heat exchange tubes of an intermediate heat exchanger, and the low-temperature refrigeration circulation system and the low-temperature liquid precision temperature control circulation system are respectively connected to two heat exchange tubes of a low-temperature heat exchanger; the medium-temperature refrigeration circulation system provides a medium-temperature environment for the low-temperature refrigeration circulation system through the intermediate heat exchanger, and the low-temperature refrigeration circulation system provides a low-temperature environment for the low-temperature liquid precision temperature control circulation system through the low-temperature heat exchanger.

[0005] The automatic low-temperature cold trap water removal system as described above, wherein the medium-temperature refrigeration cycle system includes a medium-temperature compressor, an air-cooled radiator, a filter and a throttle valve connected in sequence, one end of the medium-temperature compressor is connected to the air-cooled radiator, and the other end is connected to one end of the first heat exchange tube of the intermediate heat exchanger, and the other end of the first heat exchange tube of the intermediate heat exchanger is connected to the throttle valve; a heat dissipation fan is placed near the air-cooled radiator, and the air-cooled radiator dissipates heat under the action of the heat dissipation fan.

[0006] The automatic low-temperature cold trap water removal system as described above, wherein the second heat exchange tube of the intermediate heat exchanger is connected to the low-temperature refrigeration cycle system; specifically, the low-temperature refrigeration cycle system includes a low-temperature compressor, an automatic pressure relief valve, an expansion tank and a filter, the automatic pressure relief valve is connected to the expansion tank and then connected to one end of the first heat exchange tube of the low-temperature heat exchanger through a capillary tube, and the end of the first heat exchange tube is also connected to the low-temperature compressor, the other ends of the low-temperature compressor and the automatic pressure relief valve are connected to the filter, one end of the filter is connected to one end of the second heat exchange tube of the intermediate radiator, and the other end of the second heat exchange tube is connected to the other end of the first heat exchange tube of the low-temperature radiator through a capillary tube.

[0007] The automatic low-temperature cold trap water removal system as described above, wherein the low-temperature liquid precision temperature control circulation system includes a water vapor capture system, a constant temperature heater, a silicone oil storage tank and a pump; one end of the constant temperature heater is connected to one end of the second heat exchange tube of the low-temperature heat exchanger, the other end of the second heat exchange tube is connected to the pump, the other end of the constant temperature heater is connected to the pump after being surrounded by a pipe around the water vapor capture system, and the pump is connected to the silicone oil storage tank; under the action of the pump, the silicone oil in the silicone oil storage tank enters the circulation pipeline, and the temperature in the circulation pipeline is controlled by the low-temperature heat exchanger and the constant temperature heater, so as to adjust the temperature of the water vapor capture system.

[0008] The automatic low-temperature cold trap dewatering system as described above, wherein the water vapor capture system includes a self-melting ice trap A and a self-melting ice trap B; the self-melting ice trap A is connected to the self-melting ice trap B through three sets of electric ball valves.

[0009] As described above, the automatic low-temperature cold trap dewatering system, wherein the self-melting ice trap A includes a water trap unit A1, a water trap unit A2, a pump A, a low-temperature heat exchanger A, a constant temperature heater A and a silicone oil storage tank A; the silicone oil storage tank A is connected to the low-temperature heat exchanger A, the low-temperature heat exchanger A is connected to the constant temperature heater A, the refrigerant flows through the low-temperature heat exchanger A and the constant temperature heater A, the air source enters the water trap unit A1 and the water trap unit A2, and the water trap unit A1 and the water trap unit A2 exchange the refrigerant temperature and the air source temperature.

[0010] As described above, the automatic low-temperature cold trap water removal system includes two heat exchange tubes in the low-temperature heat exchanger A. The low-temperature liquid stored in the silicone oil storage tank A flows into one heat exchange tube of the low-temperature heat exchanger A under the action of the pump A. A refrigerant inlet and a refrigerator outlet are provided on the low-temperature heat exchanger A. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger A through the outside of the refrigerant inlet, and the refrigerator flows out of the low-temperature heat exchanger A through the refrigerant outlet from the other end of the heat exchange tube, thereby adjusting the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger A.

[0011] As described above, the automatic low-temperature cold trap water removal system, wherein the self-melting ice trap B includes a water trap unit B1, a water trap unit B2, a pump B, a low-temperature heat exchanger B, a constant temperature heater B and a silicone oil storage tank B; the silicone oil storage tank B is connected to the low-temperature heat exchanger B, the low-temperature heat exchanger B is connected to the constant temperature heater B, the refrigerant flows through the low-temperature heat exchanger B and the constant temperature heater B, the air source enters the water trap unit B1 and the water trap unit B2, and the water trap unit B1 and the water trap unit B2 exchange the refrigerant temperature and the air source temperature.

[0012] As described above, the automatic low-temperature cold trap water removal system includes two heat exchange tubes in the low-temperature heat exchanger B. The low-temperature liquid stored in the silicone oil storage tank B flows into one heat exchange tube of the low-temperature heat exchanger B under the action of the pump B. A refrigerant inlet and a refrigerator outlet are provided on the low-temperature heat exchanger B. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger B through the outside of the refrigerant inlet, and the refrigerator flows out of the low-temperature heat exchanger B through the refrigerant outlet from the other end of the heat exchange tube, so as to adjust the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger B.

[0013] In the automatic low-temperature cold trap water removal system as described above, the constant temperature heater is connected to a PID controller, and the temperature of the constant temperature heater is adjusted by the PID controller.

[0014] The beneficial effects achieved by the present application are as follows: by adopting the automatic low-temperature cold trap dewatering system provided by the present application, the refrigeration temperature can be customized, and the automatic switching gas line time, automatic ice melting, automatic drainage, and precise temperature control can be arbitrarily set in the range of 0-800 hours to ensure data stability. There is no need to replace the cold trap tube, reducing manpower and time costs. Therefore, it is simple and convenient to use and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of an automatic low-temperature cold trap water removal system provided in an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of the PID controller in the automatic low temperature cold trap water removal system;

[0018] Figure 3 This is the working principle diagram of the self-melting ice water trap in the automatic low-temperature cold trap water removal system: DETAILED DESCRIPTION

[0019] The following is a summary of the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1

[0021] The first embodiment of the present application provides an automatic low-temperature cold trap water removal system, such as Figure 1 As shown, it includes two independent water removal systems (i.e., water removal system No. A and water removal system No. B); each water removal system includes a medium-temperature refrigeration cycle system, a low-temperature refrigeration cycle system and a cryogenic liquid precision temperature control cycle system; the medium-temperature refrigeration cycle system and the low-temperature refrigeration cycle system are respectively connected to two heat exchange tubes of the intermediate heat exchanger, and the low-temperature refrigeration cycle system and the cryogenic liquid precision temperature control cycle system are respectively connected to two heat exchange tubes of the low-temperature heat exchanger; the medium-temperature refrigeration cycle system provides a medium-temperature environment for the low-temperature refrigeration cycle system through the intermediate heat exchanger, and the low-temperature refrigeration cycle system provides a low-temperature environment for the low-temperature liquid precision temperature control cycle system through the low-temperature heat exchanger.

[0022] Among them, the medium-temperature refrigeration cycle system includes a medium-temperature compressor, an air-cooled radiator, a filter and a throttle valve connected in sequence, one end of the medium-temperature compressor is connected to the air-cooled radiator, and the other end is connected to one end of the first heat exchange tube of the intermediate heat exchanger, and the other end of the first heat exchange tube of the intermediate heat exchanger is connected to the throttle valve; a heat dissipation fan is placed near the air-cooled radiator, and the air-cooled radiator dissipates heat under the action of the heat dissipation fan.

[0023] The second heat exchange tube of the intermediate heat exchanger is connected to the low-temperature refrigeration cycle system; specifically, the low-temperature refrigeration cycle system includes a low-temperature compressor, an automatic pressure relief valve, an expansion tank and a filter. The automatic pressure relief valve is connected to the expansion tank and then connected to one end of the first heat exchange tube of the low-temperature heat exchanger through a capillary tube, and this end of the first heat exchange tube is also connected to the low-temperature compressor. The other ends of the low-temperature compressor and the automatic pressure relief valve are connected to the filter. One end of the filter is connected to one end of the second heat exchange tube of the intermediate radiator, and the other end of the second heat exchange tube is connected to the other end of the first heat exchange tube of the low-temperature radiator through a capillary tube.

[0024] The cryogenic liquid precision temperature control circulation system includes a water vapor capture system, a constant temperature heater, a silicone oil storage tank and a pump; one end of the constant temperature heater is connected to one end of the second heat exchange tube of the cryogenic heat exchanger, the other end of the second heat exchange tube is connected to the pump, the other end of the constant temperature heater is connected to the pump after being surrounded by a pipeline around the water vapor capture system, and the pump is connected to the silicone oil storage tank; under the action of the pump, the silicone oil in the silicone oil storage tank enters the circulation pipeline, and the temperature in the circulation pipeline is controlled by the low-temperature heat exchanger and the constant temperature heater, so as to adjust the temperature of the water vapor capture system;

[0025] The water vapor capture system includes a self-melting ice trap A and a self-melting ice trap B; the self-melting ice trap A is connected to the self-melting ice trap B through three sets of electric ball valves;

[0026] A self-melting ice trap includes a trap unit A1, a trap unit A2 and a refrigerant circulation subsystem A; the refrigerant flows through the refrigerant circulation subsystem A, the gas source enters the trap unit A1 and the trap unit A2, and the trap unit A1 and the trap unit A2 exchange the refrigerant temperature and the gas source temperature;

[0027] The self-melting ice trap B includes a trap unit B1, a trap unit B2 and a refrigerant circulation subsystem B; the refrigerant flows through the refrigerant circulation subsystem B, the gas source enters the trap unit B1 and the trap unit B2, and the trap unit B1 and the trap unit B2 exchange the refrigerant temperature and the gas source temperature;

[0028] The water collection unit A1 and the water collection unit A2 are connected through their own electric ball valves; the water collection unit B1 and the water collection unit B2 are connected through their own electric ball valves; the constant temperature heater A and the constant temperature heater B are connected to the PID controller, and the refrigerant temperature is adjusted by the PID controller.

[0029] Specifically, the self-melting ice trap A includes a trap unit A1, a trap unit A2, a pump A, a low-temperature heat exchanger A, a constant temperature heater A and a silicone oil storage tank A; the silicone oil storage tank A is connected to the low-temperature heat exchanger A, the low-temperature heat exchanger A is connected to the constant temperature heater A, the refrigerant flows through the low-temperature heat exchanger A and the constant temperature heater A, the air source enters the trap unit A1 and the trap unit A2, and the trap unit A1 and the trap unit A2 exchange the refrigerant temperature and the air source temperature;

[0030] The low-temperature heat exchanger A includes two heat exchange tubes. The low-temperature liquid stored in the silicone oil storage tank A flows into one heat exchange tube of the low-temperature heat exchanger A under the action of pump A. A refrigerant inlet and a refrigerant outlet are provided on the low-temperature heat exchanger A. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger A through the outside of the refrigerant inlet, and the refrigerant flows out of the low-temperature heat exchanger A through the refrigerant outlet from the other end of the heat exchange tube, so as to adjust the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger A.

[0031] The self-melting ice trap B includes a trap unit B1, a trap unit B2, a pump B, a low-temperature heat exchanger B, a constant temperature heater B and a silicone oil storage tank B; the silicone oil storage tank B is connected to the low-temperature heat exchanger B, the low-temperature heat exchanger B is connected to the constant temperature heater B, the refrigerant flows through the low-temperature heat exchanger B and the constant temperature heater B, the air source enters the trap unit B1 and the trap unit B2, and the trap unit B1 and the trap unit B2 exchange the refrigerant temperature and the air source temperature;

[0032] The low-temperature heat exchanger B includes two heat exchange tubes. The low-temperature liquid stored in the silicone oil storage tank B flows into one heat exchange tube of the low-temperature heat exchanger B under the action of the pump B. A refrigerant inlet and a refrigerant outlet are provided on the low-temperature heat exchanger B. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger B through the outside of the refrigerant inlet, and the refrigerant flows out of the low-temperature heat exchanger B through the refrigerant outlet from the other end of the heat exchange tube, so as to adjust the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger B.

[0033] The water capture unit A1 is connected to the 1A inlet electric ball valve and the 1A outlet electric ball valve, the water capture unit B1 is connected to the 1B inlet electric ball valve and the 1B outlet electric ball valve, and the 1A inlet electric ball valve is connected to the 1B inlet electric ball valve, and the 1A outlet electric ball valve is connected to the 1B outlet electric ball valve; an air source 1 inlet is set between the 1A inlet electric ball valve and the 1B inlet electric ball valve, and an air source 1 outlet is set between the 1A outlet electric ball valve and the 1B outlet electric ball valve, and the air source 1 outlet discharges the dehydrated gas; in addition, the water capture unit A1 is connected to the 1A outlet electric ball valve and the water capture unit B1 is connected to the 1B outlet electric ball valve for discharging waste water.

[0034] The water capture unit A2 is connected to the 2A inlet electric ball valve and the 2A outlet electric ball valve, the water capture unit B2 is connected to the 2B inlet electric ball valve and the 2B outlet electric ball valve, and the 2A inlet electric ball valve is connected to the 2B inlet electric ball valve, and the 2A outlet electric ball valve is connected to the 2B outlet electric ball valve; an air source 2 inlet is set between the 2A inlet electric ball valve and the 2B inlet electric ball valve, and an air source 2 outlet is set between the 2A outlet electric ball valve and the 2B outlet electric ball valve, and the air source 2 outlet discharges the dehydrated gas; in addition, the water capture unit A2 is connected to the 2A outlet electric ball valve and the water capture unit B2 is connected to the 2B outlet electric ball valve for discharging waste water.

[0035] like Figure 2 As shown, the constant temperature heater A and the constant temperature heater B are connected to the PID controller through the temperature sensor and the temperature processing module, and the temperature is controlled by the PID controller. After the refrigerant flows through the constant temperature heater, the PID controller adjusts the temperature of the constant temperature heater. The temperature of the constant temperature heater can be adjusted to 100°C at most with an adjustment accuracy of 1°C. After the temperature adjustment of the PID controller, the temperature of the refrigerant flowing through the self-melting ice trap A or B is precisely constant at ±0.1°C within the range of -70°C to 0°C.

[0036] If it is required that the gas source outlet can always discharge the gas treated at a constant temperature of -50℃, the whole system always keeps one of point S or point U at a constant temperature of -50℃. The constant temperature time of point S or point U can be controlled by PID controller to achieve a constant temperature of -50℃ or temperature increase for defrosting.

[0037] In addition, the PID controller is connected to pump A and pump B to control the start and stop of pump A and pump B; and the PID controller is connected to all electric ball valves; Figure 3 It is a working principle diagram of the automatic low-temperature cold trap dewatering system, specifically: when the PID controller controls the S point of the water vapor capture system No. A to be a constant temperature of -50°C, the PID controller controls the 1A inlet electric ball valve, 1A outlet electric ball valve, 2A inlet electric ball valve and 2A outlet electric ball valve to automatically open, the 1A row electric ball valve and the 2A row electric ball valve are closed, the water vapor capture system No. B enters the heating and defrosting mode, the 1B row electric ball valve and the 2B row electric ball valve are opened, and the waste water is discharged; when the PID controller controls the U point of the water vapor capture system No. B to be a constant temperature of -50°C, the 1B inlet electric ball valve, 1B outlet electric ball valve, 2B inlet electric ball valve and 2B outlet electric ball valve are automatically opened, the 1B row electric ball valve and the 2B row electric ball valve are closed, the water vapor capture system No. A enters the heating and defrosting mode, the 1A row electric ball valve and the 2A row electric ball valve are opened, and the waste water is discharged.

[0038] Furthermore, the PID controller is also connected to a power supply HIM human-machine interface and a U disk data export module; the operation of the PID controller is controlled through the HIM human-machine interface, and the data in the PID controller is imported into the U disk through the U disk data export module.

[0039] The above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. They should all be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An automatic low temperature cold trap dewatering system, characterized in that: It includes two independent water removal systems; each water removal system includes a medium-temperature refrigeration cycle system, a low-temperature refrigeration cycle system and a cryogenic liquid precision temperature control cycle system; the medium-temperature refrigeration cycle system and the low-temperature refrigeration cycle system are respectively connected to two heat exchange tubes of the intermediate heat exchanger, and the low-temperature refrigeration cycle system and the cryogenic liquid precision temperature control cycle system are respectively connected to two heat exchange tubes of the low-temperature heat exchange tube; the medium-temperature refrigeration cycle system provides a medium-temperature environment for the low-temperature refrigeration cycle system through the intermediate heat exchanger, and the low-temperature refrigeration cycle system provides a low-temperature environment for the low-temperature liquid precision temperature control cycle system through the low-temperature heat exchanger; The medium-temperature refrigeration cycle system includes a medium-temperature compressor, an air-cooled radiator, a filter and a throttle valve connected in sequence, one end of the medium-temperature compressor is connected to the air-cooled radiator, and the other end is connected to one end of the first heat exchange tube of the intermediate heat exchanger, and the other end of the first heat exchange tube of the intermediate heat exchanger is connected to the throttle valve; a heat dissipation fan is placed near the air-cooled radiator, and the air-cooled radiator dissipates heat under the action of the heat dissipation fan; The second heat exchange tube of the intermediate heat exchanger is connected to the low-temperature refrigeration cycle system; specifically, the low-temperature refrigeration cycle system includes a low-temperature compressor, an automatic pressure relief valve, an expansion tank and a filter. The automatic pressure relief valve is connected to the expansion tank and then connected to one end of the first heat exchange tube of the low-temperature heat exchanger through a capillary tube, and the end of the first heat exchange tube is also connected to the low-temperature compressor. The other ends of the low-temperature compressor and the automatic pressure relief valve are connected to the filter. One end of the filter is connected to one end of the second heat exchange tube of the intermediate radiator, and the other end of the second heat exchange tube is connected to the other end of the first heat exchange tube of the low-temperature radiator through a capillary tube. The cryogenic liquid precision temperature control circulation system includes a water vapor capture system, a constant temperature heater, a silicone oil storage tank and a pump; one end of the constant temperature heater is connected to one end of the second heat exchange tube of the cryogenic heat exchanger, the other end of the second heat exchange tube is connected to the pump, the other end of the constant temperature heater is connected to the pump after being surrounded by a pipeline around the water vapor capture system, and the pump is connected to the silicone oil storage tank; under the action of the pump, the silicone oil in the silicone oil storage tank enters the circulation pipeline, and the temperature in the circulation pipeline is controlled by the low-temperature heat exchanger and the constant temperature heater, so as to adjust the temperature of the water vapor capture system; The water vapor capture system comprises a No. A self-melting ice water catcher and a No. B self-melting ice water catcher; the No. A self-melting ice water catcher is connected with the No. B self-melting ice water catcher through three sets of electric ball valve groups respectively.

2. The automatic low-temperature cold trap dewatering system according to claim 1, characterized in that: Self-melting ice collector No. A includes a water collection unit A1, a water collection unit A2, a pump A, a low-temperature heat exchanger A, a constant temperature heater A and a silicone oil storage tank A; the silicone oil storage tank A is connected to the low-temperature heat exchanger A, the low-temperature heat exchanger A is connected to the constant temperature heater A, the refrigerant flows through the low-temperature heat exchanger A and the constant temperature heater A, the air source enters the water collection unit A1 and the water collection unit A2, and the water collection unit A1 and the water collection unit A2 exchange the refrigerant temperature and the air source temperature.

3. The automatic low temperature cold trap dewatering system according to claim 2, characterized in that: The low-temperature heat exchanger A includes two heat exchange tubes. The low-temperature liquid stored in the silicone oil storage tank A flows into one heat exchange tube of the low-temperature heat exchanger A under the action of pump A. A refrigerant inlet and a refrigerant outlet are provided on the low-temperature heat exchanger A. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger A through the outside of the refrigerant inlet, and the refrigerant flows out of the low-temperature heat exchanger A through the refrigerant outlet from the other end of the heat exchange tube, so as to adjust the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger A.

4. The automatic low temperature cold trap dewatering system according to claim 1, characterized in that: Self-melting ice collector No. B includes a water collection unit B1, a water collection unit B2, a pump B, a low-temperature heat exchanger B, a constant temperature heater B and a silicone oil storage tank B; the silicone oil storage tank B is connected to the low-temperature heat exchanger B, the low-temperature heat exchanger B is connected to the constant temperature heater B, the refrigerant flows through the low-temperature heat exchanger B and the constant temperature heater B, the air source enters the water collection unit B1 and the water collection unit B2, and the water collection unit B1 and the water collection unit B2 exchange the refrigerant temperature and the air source temperature.

5. The automatic low temperature cold trap dewatering system according to claim 4, characterized in that: The low-temperature heat exchanger B includes two heat exchange tubes. The low-temperature liquid stored in the silicone oil storage tank B flows into one heat exchange tube of the low-temperature heat exchanger B under the action of the pump B. A refrigerant inlet and a refrigerant outlet are provided on the low-temperature heat exchanger B. The refrigerant flows into the other heat exchange tube of the low-temperature heat exchanger B through the outside of the refrigerant inlet, and the refrigerant flows out of the low-temperature heat exchanger B through the refrigerant outlet from the other end of the heat exchange tube, so as to adjust the temperature of the low-temperature liquid flowing into the low-temperature heat exchanger B.

6. The automatic low-temperature cold trap dewatering system according to claim 2 or 4, characterized in that: The constant temperature heater is connected to a PID controller, and the temperature of the constant temperature heater is adjusted by the PID controller.

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