Ultralow-temperature water vapor trapping pump with built-in evaporator

Abstract

The utility model relates to the technical field of water vapor trapping pumps, in particular to an ultralow-temperature water vapor trapping pump with a built-in evaporator, which comprises a circulating pump, an automatic flow control valve and a terminal heat load, and the built-in evaporator, the circulating pump, the automatic flow control valve and the terminal heat load form a circulating loop through pipelines. Therefore, a temperature control system of the ultralow-temperature water vapor trapping pump is formed; and the built-in evaporator is connected with the last-stage heat exchanger of the multi-stage refrigeration system in the ultralow-temperature water vapor trapping pump through a pipeline and a capillary pipeline, so that a liquid or gaseous intermediate medium enters the circulation loop, and the temperature of a terminal thermal load is accurately controlled through the flow of the intermediate medium. Compared with the prior art, the utility model has the advantages that: after the built-in evaporator is matched with a circulating system, the temperature of a terminal load can be accurately controlled, the temperature control precision can be within one degree centigrade, the temperature adjusting range is wider, and the application scene is wider.

Description

TECHNICAL FIELD

[0001] The utility model relates to water vapor trapping pump technical field, specifically at with built -in evaporimeter's ultralow temperature water vapor trapping pump. BACKGROUND

[0002] Although the existing ultralow temperature water vapor trapping pump performs well in large-scale water vapor trapping, it has a large processing capacity, but it also has some limitations. First, these devices have deficiencies in temperature control, and cannot adjust the temperature according to actual needs, resulting in unnecessary low temperature in small load conditions, which not only reduces energy efficiency, but also may cause damage to some sensitive materials. Secondly, the application scenarios of ultralow temperature water vapor trapping pump are relatively limited, mainly limited to environments below-100℃. In application scenarios higher than-100℃, it is difficult to achieve precise temperature control due to the gas-liquid mixed state of the refrigerant, limiting its application in a wider temperature range. These problems show that although the ultralow temperature water vapor trapping pump has advantages in certain fields, it still needs to be improved in flexibility and adaptability to meet more diversified industrial and scientific research needs. SUMMARY

[0003] The utility model discloses a kind of ultralow temperature water vapor trapping pumps with built-in evaporimeter, to solve the temperature control of current water vapor trapping pump equipment cannot be used, use scene is narrow, only in-100 ℃ below application scenario is used.

[0004] To achieve the above object, a kind of ultralow temperature water vapor trapping pump with built-in evaporimeter is designed, including circulating pump, automatic flow control valve and terminal thermal load, the built-in evaporimeter, circulating pump, automatic flow control valve and terminal thermal load are formed circulation loop by pipeline, to form the temperature control system of ultralow temperature water vapor trapping pump;

[0005] The built-in evaporimeter is connected with the last stage heat exchanger of multistage refrigeration system in ultralow temperature water vapor trapping pump by pipeline and capillary, so that liquid or gaseous intermediate medium enters circulation loop, and the flow of intermediate medium is used to accurately control the temperature of terminal thermal load.

[0006] Preferably, the circulating pump is used to push the flow of intermediate medium.

[0007] Preferably, the automatic flow control valve is used to adjust the flow of intermediate medium in real time according to the change of terminal thermal load, to realize accurate temperature control.

[0008] The utility model compared with prior art, its advantages are in at:

[0009] The combination of the built-in evaporator and the circulation system provides an efficient solution for precisely controlling the temperature of the terminal load. This configuration can achieve extremely high temperature control accuracy, with an error range controlled within 1 degree Celsius, greatly improving the accuracy and reliability of temperature control. In addition, the design of this system makes the temperature regulation range more extensive, which can adapt to various working environments and needs, expand its application scenarios, and ensure stable operation of the equipment under various temperature conditions, improving the safety and efficiency of operation. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 , the internal structure diagram of the ultra-low temperature water vapor trapping pump is provided.

[0011] In the figure: 1, compressor; 2, water-cooled heat exchanger; 3, drying filter; 4, first-stage heat exchanger; 5, first-stage phase separator; 6, second-stage heat exchanger; 7, second-stage phase separator; 8, third-stage heat exchanger; 9, third-stage phase separator; 10, fourth-stage heat exchanger; 11, fifth-stage heat exchanger; 12, built-in evaporator; 13, circulating pump; 14, automatic flow control valve; 15, terminal heat load; 16, buffer solenoid valve; 17, gas storage tank; 18, safety valve. DETAILED DESCRIPTION

[0012] In order to make the purpose, principle and structure of the utility model more clear and clear, the following will be further described in combination with the drawings and specific embodiments.

[0013] Referring to Figure 1 , the embodiment provides an ultra-low temperature water vapor trapping pump with a built-in evaporator, which comprises a compressor 1, a high-pressure end bellows, a low-pressure end bellows, a water-cooled heat exchanger 2, an oil separator, a drying filter 3, a phase separator, a refrigerant pipeline, a capillary tube, a buffer solenoid valve 16, a safety valve 18, a gas storage tank 17, an automatic control circuit system, a built-in evaporator, and a circulating pump 13.

[0014] The ultra-low temperature water vapor trapping pump is installed in a low-temperature application scene, and is internally provided with a 5-stage refrigeration system, a buffer system, and a temperature control system.

[0015] The 5-stage refrigeration system in the ultra-low temperature water vapor trapping pump is connected in series from front to back at the inlet end by a compressor 1, a high-pressure end bellows, a water-cooled heat exchanger 2, a dry filter 3, a refrigerant pipeline, a phase separator, an internal evaporator, a safety valve 18, a low-pressure end bellows, and a copper pipeline to form a whole.

[0016] The front phase separator is connected to the pipeline of the next heat exchanger through a capillary tube, the first phase separator 5 is connected to the pipeline of the second heat exchanger 6 through a capillary tube, the second phase separator 7 is connected to the pipeline of the third heat exchanger 8 through a capillary tube, and the third phase separator 9 is connected to the pipeline of the fourth heat exchanger 10 through a capillary tube.

[0017] The buffer system is connected in series from front to back at the inlet end by the third phase separator 9, a buffer electromagnetic valve 16, a gas tank 17, a capillary tube, and the pipeline of the first heat exchanger 4 through a copper pipeline to form a whole. One end of the buffer electromagnetic valve 16 is connected to the third phase separator 9 through a copper pipeline, the other end of the buffer electromagnetic valve 16 is connected to the gas tank 17 through a copper pipeline, and the other end of the gas tank 17 is connected to the pipeline of the first heat exchanger 4 through a capillary tube to form a third whole loop.

[0018] The temperature control system is connected in series from front to back by the outlet of a gaseous / liquid intermediate medium circulating pump 13, an internal evaporator 12 of the ultra-low temperature water vapor trapping pump, an automatic flow control valve 14, a terminal heat load 15, and the inlet of the circulating pump 13 through a copper pipeline to form a circulating circuit. The circulating pump 13 is used to drive the flow of the intermediate medium, the automatic flow control valve 14 is used to adjust the flow of the intermediate medium in real time according to the change of the terminal heat load 15 to realize precise temperature control, the internal evaporator 12 is connected to the fifth heat exchanger 11 through a pipeline and a capillary pipeline, the liquid or gaseous intermediate medium enters the circulating circuit, and the flow of the intermediate medium is used to precisely control the temperature of the terminal heat load 15.

[0019] The automatic circuit control system comprises a main board, a water temperature board, a defrosting board (1), a defrosting board (2), a 24V reset switch, a general switch, a circuit breaker, a contactor, a thermal overload protector, a transformer and a pressure control switch.

[0020] The working principle of the utility model is as follows:

[0021] The refrigerant is in a gas-liquid mixed state, and due to its phase change characteristics, it is difficult to accurately control the temperature by adjusting the flow, and an intermediate medium such as a liquid or a gas is adopted, so that temperature fluctuations caused by phase change can be avoided, so that accurate temperature control can be realized by flow.

[0022] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and novel concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An ultra-low temperature water vapor trapping pump with an internal evaporator, characterized in that a circulating pump, an automatic flow control valve and a terminal heat load are further included, and the internal evaporator, the circulating pump, the automatic flow control valve and the terminal heat load form a circulation loop through pipes to form a temperature control system of the ultra-low temperature water vapor trapping pump; the internal evaporator is connected with the last stage heat exchanger of a multi-stage refrigeration system in the ultra-low temperature water vapor trapping pump through pipes and capillary pipes, so that liquid or gaseous intermediate medium enters the circulation loop, and the flow of the intermediate medium is used to accurately control the temperature of the terminal heat load.

2. A UHV water-gas capture pump with an in-pump evaporator as defined in claim 1, characterized in that The circulating pump is used to push the flow of the intermediate medium.

3. A cryogenic water vapor trapping pump with an integrated vaporizer as claimed in claim 1, wherein The automatic flow control valve is used to adjust the flow of the intermediate medium in real time according to the change of the terminal heat load, so as to realize accurate temperature control.

Images