Flow gas control system for ionization chamber

Abstract

The utility model relates to the technical field of inflation control of ionization chambers, in particular to a gas flow control system for an ionization chamber, which comprises a cabinet body, a control module, a control panel, a power supply and a gas circuit module, the gas circuit module comprises a main pipeline, a plurality of branch pipelines and a plurality of electromagnetic valves, a first gas inlet of the main pipeline is connected with the gas supply tank, and a first gas outlet of the main pipeline is connected with the ionization chamber; the control panel and the electromagnetic valve are electrically connected with the control module; the control module is used for acquiring a control instruction triggered after a preset mode is selected on the control panel, controlling the opening / closing state of the electromagnetic valve on the main pipeline and / or the branch pipeline, and starting / stopping filling gas into the main pipeline, the branch pipeline and the ionization chamber according to the preset mode. The ionization chamber can be filled with gas according to a preset mode, intelligent control is achieved, operation of workers is greatly facilitated, parameters such as gas pressure, flow and gas purity in a gas path can be monitored in real time, and experiment accuracy is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of gas control technology for ionization chambers, specifically a gas flow control system for ionization chambers. Background Technology

[0002] An ionization chamber is a widely used light intensity monitoring detector in synchrotron radiation devices. During operation, due to detection requirements, it is often necessary to fill the ionization chamber with a certain gas at a specific pressure. However, there is currently no device in the technology capable of intelligently filling the ionization chamber with gas. To solve this problem, this invention provides a gas flow control system for ionization chambers. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas flow control system for an ionization chamber, which can effectively solve the problems mentioned in the background art.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a gas flow control system for an ionization chamber, comprising a cabinet, a control module, a control panel, a power supply and a gas path module, characterized in that the power supply is electrically connected to the control module, and the control module is electrically connected to the control panel;

[0005] The gas path module is located inside the cabinet. The gas path module includes a main pipeline, multiple branch pipelines connected to the main pipeline, and several solenoid valves installed on the main pipeline and branch pipelines. The first air inlet of the main pipeline is connected to the air supply tank outside the cabinet, and the first air outlet of the main pipeline is connected to the air inlet of the ionization chamber outside the cabinet. The solenoid valves are electrically connected to the control module.

[0006] The control module is used to acquire control commands triggered after selecting a preset mode on the control panel, and to control the opening / closing state of the solenoid valves on the main pipeline and / or branch pipelines according to the control commands, and to start / stop filling gas into the main pipeline, branch pipelines and ionization chamber according to the preset mode.

[0007] Preferably, the first air inlet is located on the first side wall of the cabinet, and the first air outlet is located on the second side wall opposite to the first side wall; the main pipeline includes a two-stage pressure reducing valve, a first filter, a pressure gauge 1, a flow meter, an air tank, a dryer, and a third filter connected in sequence between the first air inlet and the first air outlet.

[0008] The flow meter is used to monitor and regulate the gas inflow rate, the pressure gauge 1 is used to monitor the gas pressure in the main pipeline, and solenoid valves are respectively provided at both ends of the flow meter, both ends of the dryer, and between the third filter and the first outlet. The solenoid valves are used to control the gas flow status of the main pipeline.

[0009] Preferably, the main pipeline further includes a second air inlet disposed on the second side wall and a second air outlet disposed on the first side wall; the second air inlet is used to connect to the air outlet of the ionization chamber, and the second air outlet is connected to the outside to discharge impurity gas in the pipeline and the ionization chamber; a purity meter, a solenoid valve and a one-way valve are connected in sequence between the second air inlet and the second air outlet, and the purity meter is used to monitor the gas purity in the ionization chamber.

[0010] Preferably, the branch pipeline includes a first branch pipeline, a second branch pipeline, a third branch pipeline, a fourth branch pipeline, and a fifth branch pipeline. The first branch pipeline is located between the purity meter and the gas storage tank, and the first branch pipeline is sequentially connected to a second filter, a circulation pump, and a pressure gauge 2.

[0011] The pressure gauge 2 is used to monitor the air pressure in the first branch pipeline. Solenoid valves are respectively installed between the purity meter and the second filter and between the circulation pump and the air storage tank. The solenoid valves are used to control the air flow status of the first branch pipeline.

[0012] Preferably, the second branch pipeline is located between the flow meter and the gas storage tank, and a solenoid valve and a vacuum pump interface are sequentially installed on the second branch pipeline;

[0013] The third branch pipeline is located between the pressure gauge 1 and the gas storage tank, the fourth branch pipeline is located between the third filter and the gas storage tank, and the fifth branch pipeline is located between the pressure gauge 2 and the purity meter; each of the third, fourth, and fifth branch pipelines is equipped with a solenoid valve, and all three branch pipelines are connected to the main pipeline.

[0014] One end of the fifth branch pipeline is connected to the first branch pipeline, and the other end is connected to the main pipeline.

[0015] Preferably, the control panel includes parameter setting, mode selection, one-click pause, stop and exit system function modules; the mode selection function module is used to select preset modes, including purge mode, airflow mode, circulation mode, custom mode one, custom mode two and custom mode three.

[0016] Preferably, the cabinet is equipped with an emergency stop button, and the control panel, power supply, and emergency stop button are all located at the top of the cabinet.

[0017] Preferably, the gas storage tank is located at the bottom of the cabinet, a protective door is provided on the front side of the cabinet, the protective door is hinged to the cabinet, and four rollers are provided at the bottom of the cabinet.

[0018] Compared with the prior art, this utility model provides a gas flow control system for an ionization chamber, which has the following advantages:

[0019] The gas flow control system provided by this utility model can fill the ionization chamber with gas according to the preset mode by selecting the preset mode, realizing intelligent control. It not only greatly facilitates the operation of the staff, but also allows real-time monitoring of parameters such as gas pressure, flow rate and gas purity in the gas path, ensuring the accuracy of the experiment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a layout diagram of the gas path module of this utility model;

[0022] Figure 3 This is a flowchart illustrating the purging mode workflow of the system of this utility model;

[0023] Figure 4 This is a flowchart of the gas flow mode of the system of this utility model;

[0024] Figure 5 This is a flowchart of the cyclic mode workflow of the system of this utility model;

[0025] Figure 6 This is a schematic diagram of the control panel of this utility model;

[0026] Figure 7 This is a schematic diagram of the control panel of this utility model;

[0027] Figure 8 This is a schematic diagram of the control panel of this utility model;

[0028] Figure 9 This is a schematic diagram of the control panel of this utility model.

[0029] The components are: 1-1, cabinet; 1-2, control panel; 1-3, power supply; 1-4, gas tank; 1-5, emergency stop button; 1-6, safety door; 1-7, rollers. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figure 1-9 This utility model provides a gas flow control system for an ionization chamber, including a cabinet 1-1, a control module, a control panel 1-2, a power supply 1-3, and a gas path module. The power supply 1-3 is electrically connected to the control module, and the control module is electrically connected to the control panel 1-2.

[0032] The gas path module is located inside cabinet 1-1. The gas path module includes a main pipeline, multiple branch pipelines connected to the main pipeline, and several solenoid valves installed on the main pipeline and branch pipelines. The first air inlet of the main pipeline is connected to the air supply tank 1-4 outside cabinet 1-1, and the first air outlet of the main pipeline is connected to the air inlet of the ionization chamber outside cabinet 1-1. The solenoid valves are electrically connected to the control module.

[0033] The control module is used to acquire control commands triggered after selecting a preset mode on the control panel 1-2, and control the opening / closing state of the solenoid valves on the main pipeline and / or branch pipelines according to the control commands, and start / stop filling gas into the main pipeline, branch pipelines and ionization chamber according to the preset mode.

[0034] Preferably, the first air inlet is located on the first side wall of the cabinet 1-1, and the first air outlet is located on the second side wall opposite to the first side wall; the main pipeline includes a two-stage pressure reducing valve, a first filter, a pressure gauge 1, a flow meter, an air tank, a dryer, and a third filter connected in sequence between the first air inlet and the first air outlet.

[0035] The flow meter is used to monitor and regulate the gas inflow rate, the pressure gauge 1 is used to monitor the gas pressure in the main pipeline, and solenoid valves are respectively provided at both ends of the flow meter, both ends of the dryer, and between the third filter and the first outlet. The solenoid valves are used to control the gas flow status of the main pipeline.

[0036] The above description is the first part of the main pipeline, which is connected to the air inlet of the ionization chamber. When all solenoid valves are open, gas can be filled into the ionization chamber.

[0037] Preferably, the main pipeline further includes a second air inlet disposed on the second side wall and a second air outlet disposed on the first side wall; the second air inlet is used to connect to the air outlet of the ionization chamber, and the second air outlet is connected to the outside to discharge impurity gas in the pipeline and the ionization chamber; a purity meter, a solenoid valve and a one-way valve are connected in sequence between the second air inlet and the second air outlet, and the purity meter is used to monitor the gas purity in the ionization chamber.

[0038] The above description is the second part of the main pipeline, which is connected to the outlet of the ionization chamber and communicates with the outside. When all solenoid valves are opened, the gas in the pipeline, the gas tank, and the ionization chamber can be discharged into the air.

[0039] Preferably, the branch pipeline includes a first branch pipeline, a second branch pipeline, a third branch pipeline, a fourth branch pipeline, and a fifth branch pipeline. The first branch pipeline is located between the purity meter and the gas storage tank, and the first branch pipeline is sequentially connected to a second filter, a circulation pump, and a pressure gauge 2.

[0040] The pressure gauge 2 is used to monitor the air pressure in the first branch pipeline. Solenoid valves are respectively installed between the purity meter and the second filter and between the circulation pump and the air storage tank. The solenoid valves are used to control the air flow status of the first branch pipeline.

[0041] As shown above, after the first branch connects to the main branch, a circulation loop is formed: gas storage tank → dryer → third filter → purity meter → ionization chamber → second filter → circulation pump → pressure gauge 2 → gas storage tank. When the gas storage tank stores sufficient gas, the solenoid valve outside this circulation loop closes, the solenoid valve on the circulation loop opens, and the circulation pump starts. The gas in the gas storage tank can circulate within this loop, ensuring that the gas pressure in the ionization chamber remains essentially constant. The purity meter and pressure gauge 2 can monitor the gas purity and pressure within the circulation loop in real time, respectively.

[0042] Preferably, the second branch pipeline is located between the flow meter and the gas storage tank, and a solenoid valve and a vacuum pump interface are sequentially installed on the second branch pipeline. The solenoid valve is directly connected to the gas storage tank. When the solenoid valve is opened and a vacuum pump is connected to the vacuum pump interface, the gas in the gas storage tank, pipeline, and ionization chamber can be quickly discharged.

[0043] Preferably, the third branch pipeline is located between the pressure gauge 1 and the gas storage tank, and the fourth branch pipeline is located between the third filter and the gas storage tank. Both the third branch pipeline and the fourth branch pipeline are connected to the main pipeline and are each equipped with a solenoid valve.

[0044] Specifically, the third branch pipe bypasses the flow meter and its solenoid valves at both ends, directly connecting the pressure gauge 1 and the gas storage tank. When needed, the user can directly open the solenoid valve on the third branch pipe, close the solenoid valves on both sides of the flow meter, and fill the gas storage tank and subsequent pipelines through the third branch pipe. The fourth branch pipe bypasses the dryer and its solenoid valves at both ends, directly connecting the third filter and the gas storage tank. When needed, the user can directly open the solenoid valve on the fourth branch pipe, close the solenoid valves on both sides of the dryer, and fill the gas storage tank and subsequent pipelines through the fourth branch pipe.

[0045] Preferably, one end of the fifth branch pipe is connected to the first branch pipe and the other end is connected to the main pipe, and it is located between the pressure gauge 2 and the purity gauge. A solenoid valve is provided on the fifth branch pipe.

[0046] Specifically, the two ends of the fifth branch bypass the second filter, the circulation pump, and the solenoid valves connected to the second filter and the circulation pump respectively, and directly connect the pressure gauge 2 on the first branch to the purity meter on the main pipeline. When the user needs it, he can directly open the solenoid valve on the fifth branch and close the solenoid valves connected to the second filter and the circulation pump respectively, so that the gas can flow through the fifth branch.

[0047] Preferably, the control panel 1-2 includes parameter setting, mode selection, one-click pause, stop and exit system function modules; the mode selection function module is used to select preset modes, including purge mode, airflow mode, circulation mode, custom mode one, custom mode two and custom mode three.

[0048] Preferably, the cabinet 1-1 is provided with an emergency stop button 1-5, and the control panel 1-2, power supply 1-3 and emergency stop button 1-5 are all located on the upper part of the cabinet 1-1.

[0049] Preferably, the gas storage tank is located at the lower part of the cabinet 1-1.

[0050] Preferably, the cabinet 1-1 is provided with a protective door 1-6 on the front side, the protective door 1-6 is hinged to the cabinet 1-1, and the bottom of the cabinet 1-1 is provided with four rollers 1-7.

[0051] Solenoid valves (referred to as valves or ducts) are installed on the main pipeline and branch pipelines in a preset sequence. The control module is electrically connected to the solenoid valves. After selecting the preset mode on the control panel 1-2, the control module controls the corresponding solenoid valve to open. Gas enters the main pipeline through the first inlet and sequentially passes through the corresponding branch pipeline, the first outlet, and the second inlet, filling the ionization chamber with gas according to the preset mode. The second inlet is connected to the ionization chamber and the second outlet, and is used to discharge impurities from the ionization chamber.

[0052] In addition to the solenoid valve, the gas flow control system also includes: a barometer for monitoring the gas pressure at key nodes; a flow meter (or flow valve) for monitoring and regulating the gas inflow; a filter for filtering impurities from the gas; a two-stage pressure reducing valve (or buffer bottle) for buffering the gas pressure, making the gas flow in the entire gas system more stable; a dryer for absorbing moisture from the gas; a purity meter for detecting the purity of the gas in the gas system; a circulation pump for circulating the gas in the system, which can accelerate the gas in the ionization chamber to reach a balanced state, and each circulation allows the gas to be continuously filtered and purified, making the detector gas cleaner; and a one-way valve installed before the second gas outlet for one-way gas discharge to prevent external air from contaminating the entire gas system. All of the above devices are installed in a preset order on the inner shell of the lower part of the cabinet 1-1.

[0053] Cabinet 1-1 also includes an emergency stop button 1-5. Operating the emergency stop button 1-5 stops the system, closes all solenoid valves, and requires reselecting a preset mode to resume operation. Cabinet 1-1 also includes a protective door 1-6 rotatably connected to one side wall of cabinet 1-1. The protective door 1-6 protects the piping, solenoid valves, and other electronic components inside the cabinet. Four casters 1-7 are also installed at the bottom of cabinet 1-1 for easy movement.

[0054] The gas flow control system is also equipped with a vacuum pump port for connecting to an external vacuum pump, which extracts impurity gases from the pipeline, gas storage tank, and ionization chamber.

[0055] Control Panel 1-2 includes modules for parameter settings, mode selection, one-click pause, stop, and exit the system.

[0056] Specifically, the parameter settings include: safety air pressure, air intake flow rate, purging time, circulation time, air flow time, circulating working air pressure, and nitrogen purity.

[0057] Safety pressure: Used to ensure the safe operation of the system. The pressure intensity of the gas entering the pipeline through the pressure reducing valve is monitored by barometer 1. The safety pressure is generally not higher than 200.0 kPa. Inlet flow rate: The flow rate valve can be used to control the amount of gas entering the pipeline per unit time during system operation, with a maximum of 20 sML. Purge time: Used to set the purging time in purging mode. Flow time: Used to set the flow time in flow mode. Circulation time: Used to set the circulation time in circulation mode. Circulation working pressure: Used to ensure the normal operation of circulation mode. The pressure value in the pipeline in circulation mode is monitored by barometer 2 and set to an interval form. Nitrogen purity: Monitored by a purity meter. Users can set the threshold of nitrogen purity in the pipeline through this parameter. In this utility model, the filling gas is nitrogen. It should be understood that the filling gas is not limited to nitrogen.

[0058] The modes include: purge mode, flow mode, and circulation mode. After selecting the preset mode, click "execute" to fill the ionization chamber with gas according to the preset mode. The control panel 1-2 can display the opening and closing status of each valve in this mode, as well as the values ​​of the pressure gauge, flow valve, and nitrogen purity.

[0059] The mode selection also includes: Custom Mode 1, Custom Mode 2, and Custom Mode 3. After clicking on Custom Mode 1 / Custom Mode 2 / Custom Mode 3, you can customize the opening and closing status of each valve, making it convenient for users to adjust the inflation mode according to their own needs.

[0060] Clicking "One-Click Pause" will pause the current working mode. Clicking "One-Click Pause" again will resume the operation according to the preset program. Clicking "Stop Module" will stop the system from working, and all solenoid valves will be switched to the closed state. You will need to select the preset mode again to continue working. Clicking "Exit System" will exit the gas flow control system.

[0061] Example 1: The user clicks the mode selection and selects the blowing mode. In blowing mode, as... Figure 2As shown, all valves except valve 4 are opened, allowing gas to enter the main pipeline, branch pipelines, gas storage tank, and ionization chamber through the first inlet, thus purging the ionization chamber and all pipelines. The purging time can be set in the parameter settings.

[0062] Example 2: The user clicks the mode selection and selects the gas flow mode. The gas flow mode includes: an emptying stage and a gas flow stage, such as... Figure 2 As shown, during the purging phase, all valves except valve 4 are opened, and gas purges all pipelines. When the purging ends and the gas flow phase begins, valves 1, 3, 8, 10, 11, and 12 are opened, while other valves are closed. During the gas flow phase, flowing gas can continuously fill the ionization chamber. The gas flow time can be set in the parameter settings.

[0063] Example 3: The user clicks on the mode selection and chooses the loop mode. The loop mode includes: emptying phase, preparation phase, and loop phase, such as... Figure 2 As shown, during the purging stage, all valves except valve 4 are opened, and gas purges all pipelines. During the preparation stage, valves 4 and 12 are closed, and other valves are opened. When the barometer 2 detects that the gas pressure in the pipeline reaches the high threshold of the circulating working gas pressure, the circulation stage begins. At this time, valves 1, 2, 3, 6, 9, and 12 are closed simultaneously, and valves 5, 7, 8, 10, and 11 are opened simultaneously. At the same time, the circulation pump is turned on to circulate the gas in the ionization chamber and pipelines.

[0064] Example 4: The user clicks on the mode selection and chooses Custom Mode 1, Custom Mode 2, or Custom Mode 3. The user can modify the opening and closing status of the valves according to their needs. For example, if they want gas to flow through the third branch pipe, they can open the solenoid valve on the third branch pipe and close the solenoid valves on both sides of the flow meter. Similarly, the user can also open the solenoid valves on the fourth or fifth branch pipe according to their needs. It should be understood that the custom modes include, but are not limited to, the above descriptions; users can set them according to their own requirements.

[0065] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A flow gas control system for ionization chamber, comprising cabinet body (1-1), control module, control panel (1-2), power supply (1-3) and gas path module, characterized in that, The power supply (1-3) is electrically connected with the control module, and the control module is electrically connected with the control panel (1-2); The gas path module is arranged in the cabinet body (1-1), and the gas path module comprises a main pipeline, a plurality of branch pipelines communicated with the main pipeline, and a plurality of electromagnetic valves arranged on the main pipeline and the branch pipelines; a first gas inlet of the main pipeline is connected with a gas supply tank (1-4) outside the cabinet body (1-1), and a first gas outlet of the main pipeline is connected with a gas inlet end of an ionization chamber outside the cabinet body (1-1); the electromagnetic valves are electrically connected with the control module; The control module is used for obtaining a control instruction triggered after a preset mode is selected on the control panel (1-2), and controlling the opening / closing state of the electromagnetic valves on the main pipeline and / or the branch pipelines according to the control instruction, so as to start / stop filling the main pipeline, the branch pipelines and the ionization chamber with gas according to the preset mode.

2. A flow control system for an ionization chamber as defined in claim 1, wherein, The first gas inlet is arranged on a first side wall of the cabinet body (1-1), and the first gas outlet is arranged on a second side wall opposite to the first side wall; the main pipeline comprises a two-stage pressure reducing valve, a first filter, a pressure gauge 1, a flow meter, a gas storage tank, a dryer and a third filter connected in sequence between the first gas inlet and the first gas outlet. The flow meter is used for monitoring and adjusting the gas inlet flow, the pressure gauge 1 is used for monitoring the gas pressure in the main pipeline, and the electromagnetic valves are arranged between the flow meter, the dryer and the third filter and the first gas outlet respectively, and are used for controlling the ventilation state of the main pipeline.

3. A flow control system for an ionization chamber as defined in claim 2, wherein, The main pipeline further comprises a second gas inlet arranged on the second side wall and a second gas outlet arranged on the first side wall; the second gas inlet is used for being connected with a gas outlet end of the ionization chamber, and the second gas outlet is communicated with the outside, and is used for discharging impurity gas in the pipeline and the ionization chamber; the second gas inlet and the second gas outlet are connected in sequence with a purity meter, an electromagnetic valve and a one-way valve, and the purity meter is used for monitoring the gas purity of the ionization chamber.

4. A flow control system for an ionization chamber as defined in claim 3, wherein, The branch pipelines comprise a first branch pipeline, a second branch pipeline, a third branch pipeline, a fourth branch pipeline and a fifth branch pipeline; the first branch pipeline is arranged between the purity meter and the gas storage tank, and is connected in sequence with a second filter, a circulating pump and a pressure gauge 2; The pressure gauge 2 is used for monitoring the gas pressure in the first branch pipeline, and the electromagnetic valves are arranged between the purity meter and the second filter and between the circulating pump and the gas storage tank respectively, and are used for controlling the ventilation state of the first branch pipeline.

5. A flow control system for an ionization chamber as defined in claim 4, wherein, The second branch pipeline is arranged between the flow meter and the gas storage tank, and the second branch pipeline is sequentially provided with an electromagnetic valve and a vacuum pump interface; The third branch pipeline is arranged between the pressure gauge 1 and the gas storage tank, the fourth branch pipeline is arranged between the third filter and the gas storage tank, and the fifth branch pipeline is arranged between the pressure gauge 2 and the purity meter; one electromagnetic valve is arranged on each of the third branch pipeline, the fourth branch pipeline and the fifth branch pipeline, and the third branch pipeline, the fourth branch pipeline and the fifth branch pipeline are communicated with the main pipeline; One end of the fifth branch pipeline is communicated with the first branch pipeline, and the other end is communicated with the main pipeline.

6. A flow control system for an ionization chamber as defined in claim 1, wherein, The control panel (1-2) comprises parameter setting, mode selection, one-key pause, stop and exit system function modules; the mode selection function module is used for selecting preset modes, including purge mode, flow gas mode, circulation mode, custom mode one, custom mode two and custom mode three.

7. A flow control system for an ionization chamber as defined in claim 1, wherein, The cabinet body (1-1) is provided with an emergency stop button (1-5), and the control panel (1-2), the power supply (1-3) and the emergency stop button (1-5) are all arranged on the upper portion of the cabinet body (1-1).

8. A flow control system for an ionization chamber as defined in claim 1, wherein, The front side of the cabinet body (1-1) is provided with a protection door (1-6), the protection door (1-6) is hinged to the cabinet body (1-1), and the bottom of the cabinet body (1-1) is provided with four rollers (1-7).

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