Tiny gas high and low temperature control system

Abstract

The utility model discloses a tiny gas high and low temperature control system which comprises a main gas circuit and a temperature control gas circuit, the gas inlet end of the main gas circuit is connected with a gas source, and the gas outlet end of the main gas circuit is connected with a target container; the main gas circuit comprises a pressure regulating valve, a first pressure sensor, a filter, a first electromagnetic valve, a pressure controller, a second pressure sensor, a flow controller, a one-way valve, a second electromagnetic valve, a third electromagnetic valve, a third pressure sensor, a temperature sensor, a fourth electromagnetic valve and a manual ball valve which are connected in sequence; and the air outlet end of the manual ball valve is connected with the target container. The temperature control system not only can regulate and control the temperature and the pressure of the target gas, but also can ensure that the target container is not inflated when the temperature of the target gas does not reach the standard, and besides, the gas with the temperature and / or the pressure not reaching the standard can be recycled for the second time.

Description

Technical Field

[0001] This utility model relates to the field of gas temperature and pressure control technology, and in particular to a micro gas high and low temperature control system. Background Technology

[0002] Performance tests of different components require atmospheric conditions with varying pressures and temperatures. Existing gas temperature control systems suffer from temperature loss during the process of heating or cooling the gas before delivery to the target container, leading to deviations in the gas temperature and directly affecting experimental results. Therefore, a micro-gas high and low temperature control system is urgently needed. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a micro gas high and low temperature control system, which can not only regulate the temperature and pressure of the target gas, but also ensure that the target gas is not filled into the target container when the temperature of the target gas does not meet the standard. In addition, it can also recycle and reuse the gas whose temperature and / or pressure do not meet the standard.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A micro gas high and low temperature control system includes a main gas path and a temperature control gas path. The inlet of the main gas path is connected to a gas source, and the outlet of the main gas path is connected to a target container.

[0006] The main gas path includes a pressure regulating valve, a first pressure sensor, a filter, a first solenoid valve, a pressure controller, a second pressure sensor, a flow controller, a check valve, a second solenoid valve, a third solenoid valve, a third pressure sensor, a temperature sensor, a fourth solenoid valve, and a manual ball valve connected in sequence. The outlet of the manual ball valve is connected to the target container.

[0007] The inlet of the temperature-controlled gas path is located between the one-way valve and the second solenoid valve, and the outlet of the temperature-controlled gas path is located between the second solenoid valve and the third solenoid valve. The temperature-controlled gas path includes a fifth solenoid valve for controlling the on / off state of the temperature-controlled gas path and a temperature control module for gas heating.

[0008] The temperature sensor is used to detect the gas temperature at the inlet of the target container. When the temperature sensor detects that the target temperature has been reached, the fifth solenoid valve opens the outlet of the main gas path and connects it to the inlet of the target container.

[0009] Furthermore, it also includes an air extraction branch, the air inlet of which is located between the third solenoid valve and the fourth solenoid valve, and the air outlet of which is connected to the vacuum pump.

[0010] Furthermore, a sixth solenoid valve is provided on the air extraction branch.

[0011] Furthermore, an air venting path is provided between the sixth solenoid valve and the vacuum pump, and a seventh solenoid valve is provided on the air venting path.

[0012] Furthermore, the outlet of the main gas path is also connected to an eighth solenoid valve, and the outlet of the eighth solenoid valve is connected to the sampling bottle.

[0013] Furthermore, a recovery booster pump is provided between the sampling bottle and the eighth solenoid valve.

[0014] Furthermore, the gas source is a high-pressure gas cylinder containing the target gas.

[0015] The beneficial effects of this utility model are:

[0016] This utility model's temperature control system can not only regulate the temperature and pressure of the target gas, but also ensure that the target gas is not filled into the target container when the temperature does not meet the standard. In addition, it can also recycle and reuse the gas whose temperature and / or pressure do not meet the standard. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the working principle of the micro-gas high and low temperature control system in this embodiment of the present invention.

[0018] In the diagram, 1. High-pressure gas cylinder; 2. Pressure regulating valve; 3. First pressure sensor; 4. Filter; 5. First solenoid valve; 6. Pressure controller; 7. Second pressure sensor; 8. Flow controller; 9. Check valve; 10. Second solenoid valve; 11. Third solenoid valve; 12. Third pressure sensor; 13. Temperature sensor; 14. Fourth solenoid valve; 15. Manual ball valve; 16. Fifth solenoid valve; 17. Temperature control module; 18. Vacuum pump; 19. Sixth solenoid valve; 20. Seventh solenoid valve; 21. Eighth solenoid valve; 22. Sampling bottle; 23. Recovery booster pump. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See Figure 1 This utility model provides a technical solution:

[0021] Example:

[0022] like Figure 1As shown, a micro gas high and low temperature control system includes a main gas path and a temperature control gas path. The inlet of the main gas path is connected to a gas source (the gas source is a high-pressure gas cylinder 1 equipped with a target gas (in this embodiment, the target gas is methane)). The outlet of the main gas path is connected to a target container.

[0023] The main gas path includes a pressure regulating valve 2, a first pressure sensor 3, a filter 4, a first solenoid valve 5, a pressure controller 6, a second pressure sensor 7, a flow controller 8, a one-way valve 9, a second solenoid valve 10, a third solenoid valve 11, a third pressure sensor 12, a temperature sensor 13, a fourth solenoid valve 14, and a manual ball valve 15 connected in sequence. The outlet end of the manual ball valve 15 is connected to the target container.

[0024] The inlet of the temperature-controlled gas path is located between the one-way valve 9 and the second solenoid valve 10, and the outlet of the temperature-controlled gas path is located between the second solenoid valve 10 and the third solenoid valve 11. The temperature-controlled gas path includes a fifth solenoid valve 16 for controlling the opening and closing of the temperature-controlled gas path and a temperature control module 17 for gas heating.

[0025] The temperature sensor 13 is used to detect the gas temperature at the inlet of the target container. When the temperature sensor 13 detects that the target temperature is reached, the fifth solenoid valve 16 opens the outlet of the main gas path and connects it to the inlet of the target container.

[0026] It also includes an air extraction branch, the air inlet of which is located between the third solenoid valve 11 and the fourth solenoid valve 14, and the air outlet of which is connected to the vacuum pump 18.

[0027] A sixth solenoid valve 19 is provided on the air extraction branch.

[0028] An air venting passage (T-connector) is provided between the sixth solenoid valve 19 and the vacuum pump 18, and a seventh solenoid valve 20 is provided on the air venting passage.

[0029] The outlet of the main gas path is also connected to the eighth solenoid valve 21, the recovery booster pump 23, and the sampling bottle 22, which are arranged in sequence.

[0030] Among them, 1, filter 4 is a high-precision filter 4; pressure controller 6 is a precision pressure controller 6 with PID automatic control; temperature control module 17 is a gas temperature controller, which can realize high and low temperature control of gas; filter 4, pressure controller 6 and temperature control module 17 are all existing technologies, and their specific models, structures and working principles are not described here.

[0031] Working principle: Vacuum pump 18 evacuates gas to remove residual gas from the target container and main gas path. Then, the sixth solenoid valve 19 is opened and closed, and the first, second, third, and fifth solenoid valves 16 and the manual ball valve 15 are opened. The target gas in the high-pressure cylinder 1 is adjusted to a suitable pressure by the pressure regulating valve 2, then passes through the filter 4 to the pressure controller 6 for precise pressure adjustment, and finally to the flow controller 8 for flow control. After the flow controller 8 adjusts the flow to the target flow rate, it is output to the temperature-controlled gas path.

[0032] After the target gas enters the temperature-controlled gas path, the temperature control module 17 heats or cools it to the target temperature before outputting it to the main gas path. In the main gas path, the target gas passes through the third solenoid valve 11 and, before entering the fourth solenoid valve 14, its pressure and temperature are detected by the third pressure sensor 12 and temperature sensor 13. If the temperature sensor 13 detects that the target gas temperature has not reached the target temperature, the fourth solenoid valve 14 closes and the eighth solenoid valve 21 opens. The substandard target gas is then drawn into a sampling bottle 22 by the recovery booster pump 23 for secondary recycling.

[0033] If the temperature sensor 13 detects that the target temperature has reached the target temperature, the fourth solenoid valve 14 opens and the eighth solenoid valve 21 closes, allowing the target gas that has reached the target temperature to enter the target container, thereby ensuring that the atmosphere of the target container is at the target pressure and target temperature.

[0034] The third pressure sensor 12 monitors the target gas pressure in real time. If the pressure is below the target, it feeds back to the pressure controller 6 for pressure control. Similarly, if the temperature is below the target, the detection result of the temperature sensor 13 is fed back to the temperature control module 17 for temperature adjustment. Both temperature control and pressure control can be, but are not limited to, control via a PLC. The specific structure and principle are existing technologies and will not be elaborated here.

[0035] This utility model's temperature control system can not only regulate the temperature and pressure of the target gas, but also ensure that the target gas is not filled into the target container when the temperature does not meet the standard. In addition, it can also recycle and reuse the gas whose temperature and / or pressure do not meet the standard.

[0036] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A micro-gas high and low temperature control system, characterized in that: It includes a main gas path and a temperature-controlled gas path. The inlet of the main gas path is connected to a gas source, and the outlet of the main gas path is connected to the target container. The main gas path includes a pressure regulating valve, a first pressure sensor, a filter, a first solenoid valve, a pressure controller, a second pressure sensor, a flow controller, a check valve, a second solenoid valve, a third solenoid valve, a third pressure sensor, a temperature sensor, a fourth solenoid valve, and a manual ball valve connected in sequence. The outlet of the manual ball valve is connected to the target container. The inlet of the temperature-controlled gas path is located between the one-way valve and the second solenoid valve, and the outlet of the temperature-controlled gas path is located between the second solenoid valve and the third solenoid valve. The temperature-controlled gas path includes a fifth solenoid valve for controlling the on / off state of the temperature-controlled gas path and a temperature control module for gas heating. The temperature sensor is used to detect the gas temperature at the inlet of the target container. When the temperature sensor detects that the target temperature is reached, the fifth solenoid valve opens the outlet of the main gas path to connect with the inlet of the target container.

2. The micro-gas high and low temperature control system according to claim 1, characterized in that: It also includes an air extraction branch, the air inlet of which is located between the third solenoid valve and the fourth solenoid valve, and the air outlet of which is connected to a vacuum pump.

3. The micro-gas high and low temperature control system according to claim 2, characterized in that: A sixth solenoid valve is installed on the extraction branch.

4. The micro-gas high and low temperature control system according to claim 3, characterized in that: An air venting path is provided between the sixth solenoid valve and the vacuum pump, and a seventh solenoid valve is provided on the air venting path.

5. The micro-gas high and low temperature control system according to claim 1, characterized in that: The outlet of the main gas path is also connected to an eighth solenoid valve, and the outlet of the eighth solenoid valve is connected to the sampling bottle.

6. The micro-gas high and low temperature control system according to claim 5, characterized in that: A recovery booster pump is provided between the sampling bottle and the eighth solenoid valve.

7. The micro-gas high and low temperature control system according to claim 1, characterized in that: The gas source is a high-pressure gas cylinder containing the target gas.

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