Temperature and humidity control device suitable for extremely-low-pressure tank body

Abstract

The invention relates to the technical field of extremely-low-pressure tanks, in particular to a temperature and humidity control device suitable for an extremely-low-pressure tank body, which comprises a movable bracket, a test cavity is fixedly arranged at the upper end of the movable bracket, a display is fixedly arranged on the surface of the movable bracket, and a cold and hot all-in-one machine is fixedly arranged on the side edge of the movable bracket. An elliptical seal head is fixedly arranged at the upper end of the test cavity, a light inlet is fixedly formed in the upper end of the elliptical seal head, heat or cold generated by the cold and hot all-in-one machine can be efficiently transmitted into the test cavity through the synergistic effect of the cold and hot all-in-one machine and the heat sink barrel, and rapid and accurate control over the temperature in the test cavity is achieved; the temperature and humidity sensor monitors the temperature and humidity conditions in the test cavity in real time and feeds back the temperature and humidity conditions to the control system, the control system automatically adjusts the working states of the cold and hot all-in-one machine and the flow meter micrometering valve according to feedback data, stability of the temperature and humidity is further ensured, and a stable temperature environment is provided for experiments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extremely low gas pressure tank, in particular to a temperature and humidity control device suitable for extremely low gas pressure tank. BACKGROUND

[0002] As one of the important experimental means for measuring the insulation characteristics of gas from the micro level and studying the discharge mechanism of gas electron avalanche stage, the steady-state Townsend (SST) method has been maturely applied to the evaluation of ionization characteristics of gas. The SST method can measure the electron avalanche current under different conditions in the non-self-sustaining stage at low gas pressure (<2 kPa), and then obtain the ionization coefficient α and the adsorption coefficient η of the gas, and thus obtain the critical insulation strength (E / N) lim (E represents the electric field strength, and N represents the gas molecule number density) of the insulating gas.

[0003] In the experimental process, the discharge chamber needs to be pumped to the required vacuum degree first to ensure the purity of the measured gas, usually to 10-3Pa, and then the test gas is filled. When studying the discharge micro parameters in air, the chamber is usually directly pumped to the required gas pressure for the experiment or pumped to vacuum and then proportionally filled with nitrogen and oxygen, but the first scheme may contain a high content of impurity gas in air, so the second scheme is usually adopted. In the existing temperature and humidity control scheme, the temperature can be controlled by a PID controlled thermostat, etc., and the precision can reach ±0.1℃, while the control of humidity is a difficulty. Because the test gas pressure is extremely low (<2 kPa), it is difficult to precisely control the humidity in the chamber through dynamic adjustment of humidification-drying.

[0004] Therefore, a temperature and humidity control device suitable for extremely low gas pressure tank is needed to improve the above problems. SUMMARY

[0005] The present application aims to provide a temperature and humidity control device suitable for extremely low gas pressure tank to solve the problems raised in the background.

[0006] To achieve the above object, the application provides the following technical scheme: a temperature and humidity control device suitable for a tank body with extremely low air pressure, comprising a movable support, an experimental cavity fixed at the upper end of the movable support, a display fixedly installed on the surface of the movable support, a cold and hot all-in-one machine fixed at the side of the movable support, an oval head fixed at the upper end of the experimental cavity, a light inlet fixed at the upper end of the oval head, the light inlet comprising a light inlet window, a support connecting rod, an insulating support rod and an upper electrode, the light inlet window being fixedly arranged at the upper end of the oval head, the support connecting rod being fixedly arranged at the lower end of the light inlet window, the insulating support rod being threadedly connected to the lower end of the support connecting rod, the upper electrode being fixedly arranged at one end of the insulating support rod, a linear movement mechanism being fixedly arranged at the lower end of the experimental cavity, a vacuum pump being fixedly arranged in the movable support, and the vacuum pump being connected to the experimental cavity through a pipeline.

[0007] As a preferred scheme of the application, the linear movement mechanism comprises a mounting frame, a motor, a slide rail, an internally-threaded sliding plate, a bellows, a grating ruler, a screw rod, a connecting rod and a lower electrode.

[0008] As a preferred scheme of the application, the mounting frame is fixedly arranged on the surface of the lower end of the experimental cavity, a motor is fixedly arranged on one side of the mounting frame, a screw rod is drivingly arranged at the output end of the motor, and an internally-threaded sliding plate is threadedly connected to the surface of the screw rod.

[0009] As a preferred scheme of the application, slide rails are fixedly arranged at both sides of the mounting frame, the internally-threaded sliding plate is slidingly arranged on the surface of the slide rails, a connecting rod is fixedly arranged on the surface of the internally-threaded sliding plate, the connecting rod is slidingly arranged at the lower end of the inner side of the experimental cavity at one end, a lower electrode is fixedly arranged at one end of the connecting rod located on the inner side of the experimental cavity, and the lower electrode is arranged in correspondence with the upper electrode.

[0010] As a preferred scheme of the application, a bellows is fixedly arranged in the mounting frame, the bellows is sleeved on the outer side of the connecting rod, a grating ruler is fixedly arranged at the lower end of the mounting frame, and the grating ruler is arranged in correspondence with the internally-threaded sliding plate.

[0011] As a preferred scheme of the application, a glass window is fixedly arranged on the front of the experimental cavity, a plurality of high-voltage electrode electrodes are fixedly arranged on one side of the experimental cavity, a composite vacuum gauge, a flowmeter fine adjustment valve, a temperature and humidity sensor and a molecular pump reserved interface are fixedly arranged on the other side of the experimental cavity, and a thermal couple through hole and a vacuum air exhaust interface are fixedly arranged on the back of the experimental cavity.

[0012] As a preferred scheme of the application, a heat sink cylinder is fixedly and installed in the experimental cavity, the heat sink cylinder is hollow, the heat sink cylinder is made of red copper, heat conduction coils are fixedly and coiled on the surface of the heat sink cylinder, and the heat conduction coils are connected to the cold and hot all-in-one machine at both ends.

[0013] As a preferred embodiment of the present invention, the integrated cooling and heating unit includes a compressor pump, a heat sink, a cooling fan, and an expansion valve. The compressor pump, heat sink, expansion valve, and heat conduction coil are connected in sequence through pipes, and the heat sink and the cooling fan are arranged correspondingly.

[0014] As a preferred embodiment of the present invention, the integrated cooling and heating unit is internally equipped with a single-chip microcomputer controller. The composite vacuum gauge, flow meter fine-tuning valve, temperature and humidity sensor and vacuum pump are all electrically connected through the input terminal of the single-chip microcomputer controller, and the single-chip microcomputer controller is electrically connected to the output terminal of the display.

[0015] As a preferred embodiment of the present invention, the integrated cooling and heating unit has a number of heat dissipation windows on the surface of the heat dissipation plate, and a number of casters are fixedly provided at the lower end of the movable bracket.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. In this invention, the water injection volume is precisely controlled by a flow meter fine-tuning valve. Combined with the air pressure and temperature conditions inside the test chamber, the water vapor content under the test air pressure is calculated, thereby achieving precise humidity control. This solves the problem of accurately controlling the humidity inside the chamber through traditional humidification-drying dynamic adjustment under extremely low air pressure, providing an accurate humidity environment for the experiment and improving the reliability and accuracy of the experimental results. The synergistic effect of the integrated heating and cooling unit and the heat sink can efficiently transfer the heat or cold generated by the integrated heating and cooling unit to the test chamber, achieving rapid and precise temperature control inside the test chamber. Temperature and humidity sensors monitor the temperature and humidity inside the test chamber in real time and feed the data back to the control system. The control system automatically adjusts the working status of the integrated heating and cooling unit and the flow meter fine-tuning valve based on the feedback data, further ensuring the stability of temperature and humidity and providing a stable temperature environment for the experiment.

[0018] 2. In this invention, the test chamber is evacuated to an extremely low vacuum level using a vacuum pump, effectively removing impurity gases from the chamber and ensuring the purity of the gas being tested. During subsequent injection of air and water, the gas composition within the test chamber is ensured to meet experimental requirements, avoiding interference from impurity gases and improving the purity and reliability of the experiment. A composite vacuum gauge monitors the gas pressure within the test chamber in real time. Combined with the adjustment of the vacuum pump and flow meter's fine-tuning valve, the gas pressure within the test chamber can be precisely controlled, stabilizing it at the required extremely low pressure level. A stable pressure environment is fundamental for conducting steady-state Townsend method experiments, ensuring the accuracy and consistency of experimental conditions and contributing to obtaining more accurate gas ionization characteristic evaluation results.

[0019] 3. In this invention, the control system automatically adjusts the working status of components such as the integrated heating and cooling unit and the flow meter fine-tuning valve based on feedback data from the temperature and humidity sensor. This reduces manual intervention and improves the convenience and efficiency of experimental operations. At the same time, automated control can more accurately maintain the stability of temperature and humidity, avoiding errors that may be caused by manual operation. The design of the linear motion mechanism makes the adjustment of the distance between the upper and lower electrodes flexible and precise. The motor drives the lead screw to rotate, which drives the internal thread slide plate to move along the slide rail, thereby realizing the movement of the lower electrode. The grating ruler can accurately measure the movement distance of the lower electrode to ensure that the electrode spacing is adjusted to the required position. This flexible electrode spacing adjustment method can meet the discharge test requirements under different experimental conditions and improve the versatility and applicability of the device.

[0020] 4. In this invention, an entrance port is provided on the elliptical end cap at the upper end of the test chamber, and a light-entry window is fixedly set at the upper end of the elliptical end cap, providing good observation conditions for the experimental process. Through the light-entry window, the experimenters can directly observe the discharge phenomenon in the test chamber, understand various situations in the experimental process in a timely manner, and facilitate the analysis and judgment of the experimental results. The display fixedly installed on the surface of the movable bracket can display important parameters such as temperature, humidity, air pressure, and electrode spacing in the test chamber in real time, making it convenient for the experimenters to view the experimental data at any time. At the same time, these data can also be recorded, providing accurate data support for subsequent data analysis and experimental report writing.

[0021] 5. In this invention, the heat sink cylinder inside the test chamber acts as a heat sink during the discharge process, absorbing the heat generated by the discharge and maintaining a stable temperature inside the test chamber. This not only helps to maintain stable experimental conditions but also protects other components inside the test chamber from the effects of high temperatures, extending the service life of the device. The high-voltage lead electrode ensures safety in high-voltage discharge experiments, effectively preventing electrode damage and electric shock accidents, and protecting the safety of experimental personnel and equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional front structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the test chamber of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the back of the test chamber of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the test chamber of the present invention;

[0026] Figure 5 This is a schematic diagram of the heat sink cylinder structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the overall internal structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the linear motion mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the overall three-dimensional back structure of the present invention.

[0030] In the diagram: 1. Test chamber; 2. Integrated heating and cooling unit; 3. Monitor; 4. Movable bracket; 5. Glass window; 6. High-voltage electrode; 7. Light inlet; 8. Elliptical end cap; 9. Composite vacuum gauge; 10. Flow meter fine-tuning valve; 11. Temperature and humidity sensor; 12. Molecular pump reserved interface; 13. Thermocouple through-hole; 14. Vacuum pumping interface; 15. Light inlet window; 16. Support rod; 17. Insulating support rod; 18. Upper electrode; 19. Linear movement mechanism; 20. Heat-conducting coil; 21. Heat sink cylinder; 22. Compression pump; 23. Heat sink plate; 24. Cooling fan; 25. Expansion valve; 26. Vacuum pump; 27. Mounting bracket; 28. Motor; 29. ​​Slide rail; 30. Internally threaded slide plate; 31. Bellows; 32. Grating ruler; 33. Lead screw; 34. Connecting rod; 35. Lower electrode. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0035] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0036] Please see Figures 1-8This invention provides a technical solution: a temperature and humidity control device suitable for use in extremely low pressure tanks, comprising a movable support 4, a test chamber 1 fixedly mounted on the upper end of the movable support 4, a display 3 fixedly mounted on the surface of the movable support 4, a heating and cooling integrated machine 2 fixedly mounted on the side of the movable support 4, an elliptical end cap 8 fixedly mounted on the upper end of the test chamber 1, a light inlet 7 fixedly mounted on the upper end of the elliptical end cap 8, the light inlet 7 comprising a light inlet window 15, a supporting connecting rod 16, an insulating supporting rod 17, and an upper electrode 18, the light inlet window 15 being fixedly mounted on the upper end of the elliptical end cap 8, and a supporting connecting rod fixedly mounted on the lower end of the light inlet window 15. 16. An insulating support rod 17 is threadedly connected to the lower end of the support rod 16. An upper electrode 18 is fixedly attached to one end of the insulating support rod 17. A linear moving mechanism 19 is fixedly attached to the lower end of the test chamber 1. A vacuum pump 26 is fixedly attached inside the movable bracket 4. The vacuum pump 26 is connected to the test chamber 1 through a pipe. The vacuum pump 26 is used to perform a vacuuming operation on the test chamber 1. The gas inside the test chamber 1 is extracted through the vacuum extraction port 14, so that the gas pressure is reduced to an extremely low level, such as 1 Pa or less, to achieve a near-vacuum state, providing a pure environment for subsequent experiments and avoiding interference from impurity gases on the experimental results.

[0037] As an example of the present invention, the linear motion mechanism 19 includes a mounting frame 27, a motor 28, a slide rail 29, an internally threaded slide plate 30, a bellows 31, a grating ruler 32, a lead screw 33, a connecting rod 34, and a lower electrode 35.

[0038] As an example of the present invention, the mounting bracket 27 is fixedly disposed on the lower end surface of the test chamber 1, and a motor 28 is fixedly disposed on one side of the mounting bracket 27. The output end of the motor 28 is provided with a lead screw 33, and the surface of the lead screw 33 is threadedly connected with an internal threaded slide plate 30.

[0039] As an example of the present invention, slide rails 29 are fixedly provided on both sides inside the mounting bracket 27. The internal threaded slide plate 30 is slidably disposed on the surface of the slide rail 29. A connecting rod 34 is fixedly disposed on the surface of the internal threaded slide plate 30. One end of the connecting rod 34 is slidably disposed on the lower end of the inner side of the test chamber 1. A lower electrode 35 is fixedly disposed on the inner side of the connecting rod 34. The lower electrode 35 is disposed vertically and vertically corresponding to the upper electrode 18. During the discharge test, after the distance between the upper electrode 18 and the lower electrode 35 is adjusted to the required position, a high voltage is applied through the high voltage lead electrode 6 to perform the discharge test. The light inlet window 15 can be used to observe the discharge phenomenon during the test. The light inlet 7 on the elliptical end cap 8 provides light to the light inlet window 15, which facilitates the observation of the discharge situation in the test chamber 1. The heat sink cylinder 21 in the test chamber 1 plays a certain heat sink role during the discharge process, absorbing the heat generated by the discharge and maintaining the temperature stability in the test chamber 1. The composite vacuum gauge 9 is used to monitor the air pressure in the test chamber 1 in real time to ensure the air pressure stability during the test.

[0040] As an example of the present invention, a bellows 31 is fixedly installed inside the mounting frame 27. The bellows 31 is sleeved on the outside of the connecting rod 34. A grating ruler 32 is fixedly installed at the lower end of the mounting frame 27. The grating ruler 32 is vertically and vertically corresponding to the internal thread slide plate 30. After the temperature and humidity in the test chamber 1 are adjusted to the required state, the distance between the upper electrode 18 and the lower electrode 35 is adjusted by the linear movement mechanism 19. The motor 28 drives the lead screw 33 to rotate. The lead screw 33 is threadedly connected to the internal thread slide plate 30, which drives the internal thread slide plate 30 to move along the slide rail 29. The internal thread slide plate 30 drives the lower electrode 35 to move through the connecting rod 34, thereby changing the distance between the upper electrode 18 and the lower electrode 35. The bellows 31 is sleeved on the outside of the connecting rod 34 to provide sealing and protection, preventing gas leakage in the test chamber 1. The grating ruler 32 is vertically and vertically corresponding to the internal thread slide plate 30 to accurately measure the moving distance of the lower electrode 35, ensuring that the distance between the upper electrode 18 and the lower electrode 35 is adjusted to the precise position.

[0041] As an example of the present invention, a glass window 5 is fixedly provided on the front of the test chamber 1, several high-voltage electrodes 6 are fixedly provided on one side of the test chamber 1, and a composite vacuum gauge 9, a flow meter fine-tuning valve 10, a temperature and humidity sensor 11 and a molecular pump reserved interface 12 are fixedly provided on the other side of the test chamber 1. A thermocouple through-hole 13 and a vacuum pumping interface 14 are fixedly provided on the back of the test chamber 1. After the test chamber 1 reaches the required vacuum level, pre-calculated air and water are slowly injected through the flow meter fine-tuning valve 10. The flow meter fine-tuning valve 10 can accurately control the injection flow rate of gas and water to ensure that the amount of injected gas and water meets the experimental requirements. The water is liquid and is injected into the test chamber 1 through a can connected to the fine-tuning valve. The can contains a calculated mixture of water and air. When the fine-tuning valve is opened, the liquid water will evaporate naturally and flow into the test chamber 1, and air will also enter at the same time, thereby forming a specific gas pressure and water vapor content in the test chamber 1.

[0042] As an example of the present invention, a heat sink cylinder 21 is fixedly installed inside the test chamber 1. The heat sink cylinder 21 is hollow and made of copper. A heat-conducting coil 20 is coiled and fixed on the surface of the heat sink cylinder 21. The two ends of the heat-conducting coil 20 are connected to the integrated heating and cooling unit 2. The humidity is regulated by controlling the water vapor content in the test chamber 1. During the injection of air and water, the water injection volume is precisely controlled by the flow meter fine-tuning valve 10. Combined with the air pressure and temperature conditions in the test chamber 1, the water vapor content under the test air pressure is calculated, thereby achieving precise humidity control. At the same time, the temperature and humidity sensor 11 monitors the temperature and humidity in the test chamber 1 in real time and feeds the monitoring data back to the control system. The control system adjusts the working state of the integrated heating and cooling unit 2 and the flow meter fine-tuning valve 10 according to the feedback data to further precisely control the temperature and humidity in the test chamber 1.

[0043] As an example of the present invention, the integrated cooling and heating unit 2 includes a compressor pump 22, a heat sink 23, a cooling fan 24, and an expansion valve 25. The compressor pump 22, heat sink 23, expansion valve 25, and heat-conducting coil 20 are connected sequentially by pipes, and the heat sink 23 and the cooling fan 24 are correspondingly arranged. The integrated cooling and heating unit 2 is the core component for temperature regulation. It achieves temperature regulation through a cooling and heating cycle system composed of the compressor pump 22, heat sink 23, expansion valve 25, and heat-conducting coil 20. When it is necessary to lower the temperature inside the test chamber 1, the compressor pump 22 compresses the refrigerant and delivers it to the heat sink 23. The heat sink 23 dissipates heat to the external environment through the cooling fan 24. The refrigerant expands... After expanding and cooling at the expansion valve 25, the refrigerant flows into the heat-conducting coil 20, absorbing heat from the test chamber 1 and thus lowering the temperature inside the test chamber 1. When it is necessary to raise the temperature inside the test chamber 1, the integrated cooling and heating unit 2 changes the flow direction of the refrigerant, so that the refrigerant absorbs heat at the heat dissipation plate 23 and is then transported to the heat-conducting coil 20, releasing the heat into the test chamber 1 and thus raising the temperature inside the test chamber 1. The heat sink cylinder 21 is hollow inside, and the surface is coiled and fixed with the heat-conducting coil 20. The heat-conducting coil 20 is connected to the integrated cooling and heating unit 2, which can efficiently transfer the heat or cold generated by the integrated cooling and heating unit 2 to the test chamber 1, thereby achieving precise control of the temperature inside the test chamber 1.

[0044] As an example of the present invention, a single-chip microcomputer controller is fixedly installed inside the integrated cooling and heating unit 2. The composite vacuum gauge 9, the flow meter fine-tuning valve 10, the temperature and humidity sensor 11 and the vacuum pump 26 are all electrically connected through the input terminal of the single-chip microcomputer controller. The single-chip microcomputer controller is electrically connected to the output terminal of the display 3.

[0045] As an example of the present invention, the cooling and heating unit 2 has a number of heat dissipation windows on the surface of the heat dissipation plate 23, and the movable bracket 4 has a number of casters fixed at its lower end.

[0046] Working principle: When in use;

[0047] Vacuum extraction: First, vacuum pump 26 is used to evacuate the test chamber 1. The gas in the test chamber 1 is extracted through vacuum pumping port 14, so that the gas pressure is reduced to an extremely low level, such as 1 Pa or less, to achieve a near-vacuum state, providing a pure environment for subsequent experiments and avoiding interference from impurity gases on the experimental results.

[0048] Gas injection: After the required vacuum level is reached in the test chamber 1, pre-calculated air and water are slowly injected through the flow meter fine-tuning valve 10. The flow meter fine-tuning valve 10 can precisely control the injection flow rate of gas and water to ensure that the amount of injected gas and water meets the experimental requirements. The water is liquid and is injected into the test chamber 1 through a can connected to the fine-tuning valve. The can contains a calculated mixture of water and air. When the fine-tuning valve is opened, the liquid water will evaporate naturally and flow into the test chamber 1. At the same time, air will also enter, thereby forming a specific gas pressure and water vapor content in the test chamber 1.

[0049] Temperature regulation is achieved through a cooling and heating integrated unit 2, which is the core component for temperature control. It utilizes a cooling and heating cycle system consisting of a compressor pump 22, a heat sink 23, an expansion valve 25, and a heat-conducting coil 20. When it is necessary to lower the temperature inside the test chamber 1, the compressor pump 22 compresses the refrigerant and delivers it to the heat sink 23. The heat sink 23 dissipates heat to the external environment via a cooling fan 24. The refrigerant expands and cools at the expansion valve 25 before flowing into the heat-conducting coil 20, absorbing heat from the test chamber 1 and thus lowering the temperature inside the test chamber 1. When it is necessary to increase the temperature inside the test chamber 1, the integrated cooling and heating unit 2 changes the flow direction of the refrigerant, so that the refrigerant absorbs heat at the heat dissipation plate 23 and is then transported to the heat conduction coil 20, releasing the heat into the test chamber 1, thereby increasing the temperature inside the test chamber 1. The heat sink cylinder 21 is hollow inside, and the surface is coiled and fixed with the heat conduction coil 20. The heat conduction coil 20 is connected to the integrated cooling and heating unit 2, which can efficiently transfer the heat or cold generated by the integrated cooling and heating unit 2 to the test chamber 1, so as to achieve precise control of the temperature inside the test chamber 1.

[0050] Humidity regulation is achieved by controlling the water vapor content within the test chamber 1. During the injection of air and water, the water injection volume is precisely controlled by the flow meter fine-tuning valve 10. Combined with the air pressure and temperature conditions within the test chamber 1, the water vapor content under the test air pressure is calculated, thereby achieving precise humidity control. Simultaneously, the temperature and humidity sensor 11 monitors the temperature and humidity within the test chamber 1 in real time and feeds the monitoring data back to the control system. The control system adjusts the working status of the integrated cooling and heating unit 2 and the flow meter fine-tuning valve 10 based on the feedback data to further precisely control the temperature and humidity within the test chamber 1.

[0051] Electrode spacing adjustment: After the temperature and humidity in the test chamber 1 are adjusted to the required state, the spacing between the upper electrode 18 and the lower electrode 35 is adjusted by the linear movement mechanism 19. The motor 28 drives the lead screw 33 to rotate. The lead screw 33 is threadedly connected to the internal thread slide plate 30, which drives the internal thread slide plate 30 to move along the slide rail 29. The internal thread slide plate 30 drives the lower electrode 35 to move through the connecting rod 34, thereby changing the spacing between the upper electrode 18 and the lower electrode 35. The bellows 31 is sleeved on the outside of the connecting rod 34 to seal and protect against gas leakage in the test chamber 1. The grating ruler 32 is set vertically and vertically with the internal thread slide plate 30 to accurately measure the moving distance of the lower electrode 35, ensuring that the spacing between the upper electrode 18 and the lower electrode 35 is adjusted to the precise position.

[0052] In the discharge test, after the distance between the upper electrode 18 and the lower electrode 35 is adjusted to the required position, a high voltage is applied through the high voltage lead electrode 6 to conduct the discharge test. The light inlet window 15 can be used to observe the discharge phenomenon during the test. The light inlet 7 on the elliptical end cap 8 provides light to the light inlet window 15, which facilitates the observation of the discharge situation in the test chamber 1. The heat sink cylinder 21 in the test chamber 1 plays a certain heat sink role during the discharge process, absorbing the heat generated by the discharge and maintaining the temperature stability in the test chamber 1. The composite vacuum gauge 9 is used to monitor the air pressure in the test chamber 1 in real time to ensure the air pressure stability during the test.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature and humidity control device suitable for use in extremely low pressure tanks, comprising a movable support (4), characterized in that: The movable bracket (4) is fixedly provided with a test chamber (1) at its upper end. A display (3) is fixedly installed on the surface of the movable bracket (4). A heating and cooling integrated machine (2) is fixedly provided on the side of the movable bracket (4). An elliptical end cap (8) is fixedly provided at the upper end of the test chamber (1). A light inlet (7) is fixedly provided at the upper end of the elliptical end cap (8). The light inlet (7) includes a light inlet window (15), a support rod (16), an insulating support rod (17), and an upper electrode (18). A window (15) is fixedly installed on the upper end of an elliptical head (8). A support rod (16) is fixedly installed at the lower end of the light-transmitting window (15). An insulating support rod (17) is connected to the lower end of the support rod (16) by a thread. An upper electrode (18) is fixedly installed at one end of the insulating support rod (17). A linear moving mechanism (19) is fixedly installed at the lower end of the test chamber (1). A vacuum pump (26) is fixedly installed inside the movable bracket (4). The vacuum pump (26) is connected to the test chamber (1) through a pipe.

2. The temperature and humidity control device for use in extremely low-pressure tanks according to claim 1, characterized in that: The linear motion mechanism (19) includes a mounting bracket (27), a motor (28), a slide rail (29), an internal threaded slide plate (30), a bellows (31), a grating ruler (32), a lead screw (33), a connecting rod (34), and a lower electrode (35).

3. The temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 2, characterized in that: The mounting bracket (27) is fixedly installed on the lower surface of the test chamber (1). A motor (28) is fixedly installed on one side of the mounting bracket (27). A lead screw (33) is driven at the output end of the motor (28). An internal threaded sliding plate (30) is threadedly connected to the surface of the lead screw (33).

4. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 3, characterized in that: The mounting bracket (27) has slide rails (29) fixed on both sides inside. The internal threaded slide plate (30) is slidably disposed on the surface of the slide rail (29). The internal threaded slide plate (30) is fixedly disposed on the surface of the slide rail (29). One end of the slide plate (34) is slidably disposed on the lower end of the test chamber (1). The lower electrode (35) is fixedly disposed on the inner end of the slide plate (34) inside the test chamber (1). The lower electrode (35) and the upper electrode (18) are arranged vertically in correspondence.

5. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 4, characterized in that: The mounting bracket (27) is fixedly provided with a corrugated tube (31), which is sleeved on the outside of the connecting rod (34). The lower end of the mounting bracket (27) is fixedly provided with a grating ruler (32), which is set vertically and vertically with the internal threaded slide plate (30).

6. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 5, characterized in that: The test chamber (1) is fixed with a glass window (5) on the front, and a number of high voltage electrodes (6) are fixed on one side of the test chamber (1). A composite vacuum gauge (9), a flow meter fine-tuning valve (10), a temperature and humidity sensor (11) and a molecular pump reserved interface (12) are fixed on the other side of the test chamber (1). A thermocouple through port (13) and a vacuum pumping interface (14) are fixed on the back of the test chamber (1).

7. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 6, characterized in that: The test chamber (1) is fixedly installed with a heat sink cylinder (21). The heat sink cylinder (21) is hollow inside and made of copper. A heat-conducting coil (20) is coiled and fixed on the surface of the heat sink cylinder (21). The two ends of the heat-conducting coil (20) are connected to the integrated heating and cooling machine (2).

8. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 7, characterized in that: The integrated cooling and heating unit (2) includes a compressor pump (22), a heat sink (23), a cooling fan (24), and an expansion valve (25). The compressor pump (22), the heat sink (23), the expansion valve (25), and the heat conduction coil (20) are connected in sequence through pipes, and the heat sink (23) and the cooling fan (24) are set accordingly.

9. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 5, characterized in that: The integrated cooling and heating unit (2) is equipped with a single-chip microcomputer controller. The composite vacuum gauge (9), flow meter fine-tuning valve (10), temperature and humidity sensor (11) and vacuum pump (26) are all electrically connected through the input terminal of the single-chip microcomputer controller. The single-chip microcomputer controller is electrically connected to the output terminal of the display (3).

10. A temperature and humidity control device suitable for use in extremely low-pressure tanks according to claim 5, characterized in that: The integrated cooling and heating unit (2) has several heat dissipation windows on the surface of the heat dissipation plate (23), and several casters are fixed at the lower end of the movable bracket (4).

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