Protection System, Method and Computer-Readable Medium of a Detector

Abstract

The present application provides a protection system, method and computer-readable medium for a detector. The system first controls the air pressure of the intake gas to be stable through a pressure stabilization device, and then when the pressure is stable, the mass flow control module conveys the gas according to a preset flow rate, so that the gas is conveyed to each gas branch. The on / off of the corresponding gas branch is controlled by a switch control module, and the gas flow rate after the gas reacts with the detector in the corresponding gas branch is measured by a first flow rate measurement module for the system to detect whether there is an abnormality in the gas flow rate. Then, the gas in the corresponding gas branch is controlled to be output unidirectionally through a gas one-way control module. When the system detects an abnormality in the gas flow rate, the system controls the mass flow control module to adjust the size of the preset flow rate, and controls the switch control module of the gas branch corresponding to the abnormal gas flow rate, so that the corresponding gas branch is disconnected.

Description

Technical Field

[0001] This application relates to the field of information technology, and particularly to a protection system, method, and computer-readable medium for a detector. Background Art

[0002] A flow proportional counter tube, namely the "detector" in this article, is actually a transducer. When used in X-rays, it converts the energy of the incident X-ray photons into a pulsed voltage with a certain amplitude through the counter tube, and then amplifies it, etc. Finally, the intensity of the electrical pulse is recorded. In X-ray fluorescence analysis and electron probe analysis, qualitative and quantitative analysis of elements is performed based on the recorded electrical pulses. Detectors also have extensive applications in atomic energy and X-ray structure analysis.

[0003] In related technologies, common detectors include Geiger-Müller counter tubes, etc. A detector is a device for observing and recording particles and is an indispensable device in nuclear physics and particle physics experimental research. Its general structure is that a thin gas (usually a rare gas doped with halogen, such as helium, neon, argon, etc.) is filled in a metal tube with both ends sealed by insulating substances, a metal wire electrode is installed along the axis of the tube, and a voltage slightly lower than the breakdown voltage of the gas in the tube is applied between the metal tube wall and the metal wire electrode. In this way, under normal conditions, the gas in the tube does not discharge; when a high-speed particle enters the tube, the energy of the particle ionizes and conducts the gas in the tube, resulting in a rapid gas discharge phenomenon between the wire electrode and the tube wall, thereby outputting a pulsed current signal. By appropriately selecting the voltage applied between the wire electrode and the tube wall, the minimum energy of the detected particles can be measured, and thus their types can be selected. In related technologies, generally, an α / β sample counter can be used to simultaneously measure the radiation of α particles and β particles and automatically record the measurement results.

[0004] However, the inventor found that there are at least the following technical problems in related technologies:

[0005] In related technologies, when there is a gas leak or other situations that cause unstable gas pressure or excessive gas pressure, it is often not detected in time. Over time, the gas is likely to penetrate the detector, causing damage to the detector and resulting in low equipment stability; once one or more detectors are damaged and the gas pressure in the system remains in its original state, other detectors need to bear a greater pressure due to sharing the gas flow of the damaged detector, and then other detectors will also be damaged. Moreover, the price of a detector on the market ranges from 20,000 yuan, which is relatively expensive. Therefore, if the detector is damaged, the costs for replacement, maintenance, etc. caused by it are relatively high. Summary of the Invention

[0006] An object of the present application is to provide a protection system for a detector, at least to solve related technical problems such as the detector being easily damaged, the low stability of the device, and the high maintenance cost.

[0007] To achieve the above object, some embodiments of the present application provide a protection system for a detector. The system includes: a gas pressure stabilizing device, a mass flow control module, a switch control module, a detector, a first flow measurement module, and a gas one-way control module; wherein, the number of the switch control module, the detector, the first flow measurement module, and the gas one-way control module is N each, and N is an integer greater than 1; the output end of the gas pressure stabilizing device is connected to the input end of the mass flow control module, and each of the switch control module, the detector, the first flow measurement module, and the gas one-way control module are connected in sequence to form a gas branch, and the gas branches are connected in parallel, the input ends of the gas branches are respectively connected to the output end of the mass flow control module, and the output ends of the gas branches are used for gas output; the gas pressure stabilizing device is used to control the pressure of the inlet gas to be stable; the mass flow control module is used to convey gas at a preset flow rate when the pressure is stable, so that the gas is conveyed to each gas branch; the switch control module is used to control the on-off of the corresponding gas branch; the first flow measurement module is used to measure the gas flow rate in the corresponding gas branch after the gas reacts with the detector, for the system to detect whether the gas flow rate is abnormal; the gas one-way control module is used to control the gas in the corresponding gas branch to be output unidirectionally; wherein, when the system detects that the gas flow rate is abnormal, the system controls the mass flow control module to adjust the size of the preset flow rate, and controls the switch control module of the gas branch corresponding to the abnormal gas flow rate, so that the corresponding gas branch is disconnected.

[0008] Some embodiments of the present application also provide a protection method for a detector, which is applied to the above-mentioned system. The method includes: controlling the pressure of the inlet gas to be stable; when the pressure is stable, conveying gas at a preset flow rate, so that the gas is conveyed to each gas branch; respectively measuring the gas flow rate in each gas branch to detect whether the gas flow rate is abnormal, and controlling the gas in each gas branch to be output unidirectionally; wherein, when it is detected that the gas flow rate is abnormal, automatically adjusting the size of the preset flow rate, and controlling the gas branch corresponding to the abnormal gas flow rate to be disconnected.

[0009] Some embodiments of the present application also provide a computer-readable medium, on which computer program instructions are stored, and the computer program instructions can be executed by a processor to implement the above method.

[0010] Compared with the prior art, in the solution provided by the embodiment of the present application, first, the air pressure stabilizing device is used to control the air pressure of the intake gas to be stable. Then, when the air pressure is stable, the mass flow control module delivers the gas according to a preset flow rate, so that the gas is delivered to each gas branch. The on-off of the corresponding gas branch is controlled by the switch control module. The first flow measurement module measures the gas flow rate of the gas after passing through the detector and reacting with the gas in the corresponding gas branch, so as to detect whether there is an abnormality in the gas flow rate of the system. Then, the gas one-way control module controls the gas in the corresponding gas branch to output unidirectionally. When the system detects that there is an abnormality in the gas flow rate, the system controls the mass flow control module to adjust the size of the preset flow rate, and controls the switch control module of the gas branch corresponding to the abnormal gas flow rate, so that the corresponding gas branch is disconnected. Since in the embodiment of the present application, through the pressure stability of the air pressure stabilizing device, the gas flow control of the mass flow control module, and the guarantee of the gas one-way control module, the cooperation of each link can improve the stability of the equipment; when the system detects that there is an abnormality in the gas flow rate, the system controls the mass flow control module to adjust the size of the preset flow rate, which can make the system gas pressure be adjusted in time once one or more of the detectors are damaged, so that the gas flow rates of other detectors remain unchanged. In addition, the switch control module of the gas branch corresponding to the abnormal gas flow rate is also controlled to disconnect the corresponding gas branch. Therefore, the ionization detector does not need to bear a large pressure of gas flow, protecting other detectors and being beneficial to reducing the replacement and maintenance costs of the detectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural connection diagram of a protection system for a detector provided by an embodiment of the present application;

[0012] Figure 2 It is a schematic circuit connection diagram of a protection system for a detector in an application example provided by an embodiment of the present application;

[0013] Figure 3 It is a schematic circuit connection diagram of a protection system for a detector in another application example provided by an embodiment of the present application;

[0014] Figure 4 It is a schematic circuit connection diagram of a protection system for a detector in another application example provided by an embodiment of the present application;

[0015] Figure 5 It is a schematic circuit connection diagram of a protection system for a detector in another application example provided by an embodiment of the present application;

[0016] Figure 6Schematic diagram of the circuit connection of the protection system of the detector in another application example provided by the embodiments of the present application. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0018] The following terms are used in this article.

[0019] Pressure reducing valve: It is a valve that reduces the inlet pressure to a required outlet pressure through adjustment and relies on the energy of the medium itself to automatically maintain the stability of the outlet pressure. From the perspective of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of pressure reduction. Then, relying on the adjustment of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve remains constant within a certain error range.

[0020] Two-position two-way solenoid valve, a mechanical principle combining direct acting and pilot operated. Solenoid valves are divided into two categories in principle: 1) Direct acting solenoid valve: Principle: When energized, the electromagnetic coil generates an electromagnetic force to lift the closing part from the valve seat, and the valve opens; when de-energized, the electromagnetic force disappears, and the spring presses the closing part against the valve seat, and the valve closes. Characteristics: It can work normally under vacuum, negative pressure and zero pressure, but the nominal diameter generally does not exceed 25mm. 2) Step-by-step direct acting solenoid valve: Principle: It is a principle combining direct acting and pilot operated. When there is no pressure difference between the inlet and the outlet, after energization, the electromagnetic force directly lifts the pilot small valve and the main valve closing part upwards in sequence, and the valve opens. When the pressure difference between the inlet and the outlet reaches the starting pressure difference, after energization, the electromagnetic force acts on the pilot small valve, the pressure in the lower chamber of the main valve rises, and the pressure in the upper chamber drops, so as to push the main valve upwards by using the pressure difference; when de-energized, the pilot valve uses the spring force or the medium pressure to push the closing part downwards to close the valve. Among them, the above two types of two-position two-way solenoid valves are applicable to the embodiments of the present application.

[0021] Mass flow controller, English full name: Mass Flow Controller, abbreviated as "MFC", is an instrument used for precise measurement and control of the mass flow of gases or liquids. It usually consists of components such as a flow sensor, a flow regulating valve, an amplification control circuit and a shunt control channel. Its working power supply and operations such as flow display and setting are provided by the supporting flow display power supply.

[0022] A check valve, also known as a non-return valve or a one-way valve, is a device that allows gas to flow in only one direction and prevents it from flowing back.

[0023] A rotameter, also known as a variable area constant differential pressure flowmeter or a float flowmeter, measures the fluid flow based on the throttling principle. However, it maintains a constant differential pressure across the rotor by changing the flow area of the fluid.

[0024] In the related art, the inventor did not find a protection system for the detector. To improve the deficiencies in the existing technology, a protection system for the detector is proposed to solve the technical problems that the abnormality of the gas cannot be detected in time and, over time, the gas easily penetrates the detector, causing damage to the detector and resulting in low stability of the equipment. The protection system for the detector in the implementation of this application can not only improve the stability of equipment such as α / β sample counters but also reduce the maintenance costs and other expenses caused by detector damage.

[0025] Specifically, as Figure 1 shown, the embodiment of this application provides a protection system for a detector. The system includes: a pneumatic stability device 11, a mass flow control module, a switch control module 13, a detector 14, a first flow measurement module 15, and a gas one-way control module 16. Among them, the number of the switch control module 13, the detector 14, the first flow measurement module 15, and the gas one-way control module 16 is N, and N is an integer greater than 1.

[0026] The output end of the pneumatic stability device 11 is connected to the input end of the mass flow control module. Each switch control module 13, detector 14, first flow measurement module 15, and gas one-way control module 16 are connected in sequence to form a gas branch. The gas branches are connected in parallel, the input ends of the gas branches are respectively connected to the output end of the mass flow control module, and the output ends of the gas branches are used for gas output;

[0027] The pneumatic stability device 11 is used to control the pressure of the inlet gas to be stable;

[0028] The mass flow control module is used to deliver gas at a preset flow rate when the pressure is stable, so that the gas is delivered to each gas branch;

[0029] The switch control module 13 is used to control the on / off of the corresponding gas branch;

[0030] The first flow measurement module 15 is used to measure the gas flow rate in the corresponding gas branch after the gas reacts with the detector 14, so as to detect whether there is an abnormality in the gas flow rate by the system;

[0031] The gas one-way control module 16 is used to control the one-way output of the gas in the corresponding gas branch.

[0032] Wherein, when the system detects that the gas flow is abnormal, the system controls the mass flow control module to adjust the size of the preset flow, and controls the switch control module 13 of the gas branch corresponding to the abnormal gas flow, so that the corresponding gas branch is disconnected.

[0033] It should be noted that if the number of detectors increases, the system controls the mass flow control module to increase the preset flow; if the number of detectors decreases (such as being damaged), the system controls the mass flow control module to decrease the preset flow.

[0034] In some examples, the input end of the air pressure stabilizing device 11 is connected to a gas container such as a mixed gas cylinder. Optionally, the gas container is a P10 gas cylinder.

[0035] In some examples, the mass flow control module 12 is specifically a mass flow controller.

[0036] In some examples, the switch control module 13 is specifically a two-way two-way solenoid valve.

[0037] In some examples, the first flow measurement module 15 is specifically a flow sensor.

[0038] In some examples, the gas one-way control module 16 is specifically a one-way valve.

[0039] In some examples, the number of gas branches is 4, 8, 10, or 12. The number of gas branches can be determined according to actual needs, and the embodiments of the present application do not make specific limitations in this regard.

[0040] Specifically, after the valve of the gas container is opened, the air pressure stabilizing device 11 of the system receives the air pressure of the intake gas discharged from the gas container until the air pressure is stabilized, and then conveys the gas according to the preset flow through the mass flow control module 12. At this time, N switch control modules 13 are automatically opened, and the air pressure stabilizing device 11 of the system controls the air pressure of the intake gas entering the gas branch to be stabilized. After that, N first flow measurement modules 15 respectively connected to N detectors 14 report the gas flow measured in the corresponding gas branch after the gas reacts with the detector 14 to the system. After that, the gas one-way control module 16 controls the one-way output of the gas in the corresponding gas branch, which can prevent external gas from entering the gas branch and thus prevent the gas in the gas branch from mixing with the external gas, resulting in inaccurate measurement results.

[0041] Furthermore, when the first flow measurement module 15 detects an abnormality in the gas flow, the system controls the mass flow control module to adjust the magnitude of the preset flow rate, and controls the switch control module 13 of the gas branch corresponding to the gas flow with the abnormality, so as to disconnect the corresponding gas branch.

[0042] For example, assume that the number of gas branches is 4, namely gas branch A to gas branch D, and the preset flow rate is 240 ml / min. Then the normal flow rate of each gas branch is 60 ml / min. The corresponding switch control modules 13, detectors 14, first flow measurement modules 15, mass flow control modules 12, and gas one-way control modules 16 for each gas branch are respectively: switch control module A to switch control module D, detector A to detector D, first flow measurement module A to first flow measurement module D, mass flow control module A to mass flow control module D, and gas one-way control module A to gas one-way control module D. If there is a gas leakage or the air leakage film of detector A is broken, the first flow measurement module A of gas branch A can detect the gas flow data and report the gas flow data to the system. After the system analyzes the reported data and determines that there is an abnormality, it controls and adjusts the mass flow control module A to automatically adjust the magnitude of the preset flow rate. For example, it automatically reduces the preset flow rate to 180 ml / min, timely protecting the gas flow rates of gas branches B to D within the normal range, thereby avoiding damage to detectors B to D due to excessive gas pressure. At the same time, the system correspondingly closes the switch control module A, which can not only cut off the gas branch with the abnormality, but also avoid waste of the gas used in the system operation. Thus, when one or some gas branches in the system have abnormalities, it can protect the detectors 14 of other gas branches, enabling other gas branches to work normally without affecting the user's use.

[0043] It is not difficult to find that, compared with the related art, the protection system for the detector provided by the embodiment of the present application first controls the air pressure of the incoming gas to be stable through the air pressure stabilizing device, and then when the air pressure is stable, the mass flow control module conveys the gas according to the preset flow rate, so that the gas is conveyed to each gas branch. The switch control module controls the on-off of the corresponding gas branch, and the first flow measurement module measures the gas flow rate in the corresponding gas branch after the gas reacts with the detector, for the system to detect whether there is an abnormality in the gas flow rate. After that, the gas one-way control module controls the gas in the corresponding gas branch to be output unidirectionally. When the system detects an abnormality in the gas flow rate, the system controls the mass flow control module to adjust the magnitude of the preset flow rate, and controls the switch control module of the gas branch corresponding to the gas flow with the abnormality, so as to disconnect the corresponding gas branch.

[0044] In the embodiments of the present application, through the pressure stability maintenance of the air pressure stabilizing device, the gas flow control of the mass flow control module, and the guarantee of the gas one-way control module, the cooperation of each link can improve the stability of the equipment; when the system detects that there is an abnormality in the gas flow, the system controls the mass flow control module to adjust the size of the preset flow, so that once one or more of the detectors are damaged, the system gas pressure can be adjusted in time, so that the gas flow of other detectors remains unchanged. In addition, the switch control module of the gas branch corresponding to the abnormal gas flow is also controlled to disconnect the corresponding gas branch. Therefore, the ionization detector does not need to bear a large pressure of gas flow, which protects other detectors and is beneficial to reducing the replacement and maintenance costs of the detectors.

[0045] In some embodiments of the present application, the number of the mass flow control modules is N; each of the mass flow control modules is connected to each of the switch control modules 13 in a one-to-one correspondence.

[0046] Among them, the number of the mass flow control modules is the same as the number of the gas branches, and each mass flow control module controls the gas flow of each gas branch. Assuming that the number of the gas branches is 4, namely gas branch A to gas branch D, and the preset flow is 240 ml / min, then the normal flow of each gas branch is 60 ml / min. The mass flow control modules 12, switch control modules 13, detectors 14, first flow measurement modules 15, and gas one-way control modules 16 corresponding to each gas branch are respectively: mass flow control module A to mass flow control module D, switch control module A to switch control module D, detector A to detector D, first flow measurement module A to first flow measurement module D, mass flow control module A to mass flow control module D, and gas one-way control module A to gas one-way control module D. Here, the gas flow controlled by each mass flow control module is 60 ml / min.

[0047] It can be seen from Figure 2 as shown Figure 2The figure shows a schematic circuit connection diagram of a protection system for a detector in an application example. In this example, the number of gas branches is 4. The mass flow control modules 12, switch control modules 13, detectors 14, first flow measurement modules 15, and gas one-way control modules 16 corresponding to each gas branch are respectively: mass flow control modules A to D, switch control modules A to D, detectors A to D, first flow measurement modules A to D, mass flow control modules A to D, and gas one-way control modules A to D. Assuming the preset flow rate is 240 ml / min, since the number of gas branches is 4, the gas flow rate controlled by each mass flow control module is 60 ml / min.

[0048] In some embodiments of the present application, the air pressure stabilizing device 11 may include a first pressure reducing module, a 1-2 gas distribution module, an exhaust switch, and a second pressure reducing module. The output end of the first pressure reducing module is connected to the input end of the 1-2 gas distribution module, and the output end of the 1-2 gas distribution module is connected to a parallel branch composed of the exhaust switch and the second pressure reducing module.

[0049] The first pressure reducing module is used to reduce the air pressure of the inlet gas to a first pressure value;

[0050] The 1-2 gas distribution module is used to divide the gas with a pressure of the first pressure value into two paths of gas. One path of gas is used as the filling gas to discharge the remaining gas through the open exhaust switch. After the remaining gas is exhausted and the air pressure is stabilized, the exhaust switch automatically closes, so that the other path of gas is input to the second pressure reducing module;

[0051] The second pressure reducing module is used to reduce the input air pressure to a second pressure value, and the second pressure value is less than the first pressure value.

[0052] In some examples, the first pressure reducing module is specifically a two-stage pressure reducing valve.

[0053] In some examples, the exhaust switch is specifically a two-position two-way solenoid valve.

[0054] In some examples, the second pressure reducing module is specifically a three-stage pressure reducing valve.

[0055] In some examples, if the number of gas branches is 4, the first pressure value is about 0.2 MPa, and the second pressure value is about 0.05 MPa.

[0056] Specifically, after manually opening the valve of the gas container and turning on the first pressure reduction module, the first pressure reduction module receives the intake gas discharged from the gas container, reduces the pressure of the intake gas to a first pressure value, and then the system automatically turns on the exhaust switch. The 1-2 gas distribution module divides the gas with the first pressure value into two paths of gas. One path of gas is used as the filling gas to discharge the existing residual gas in the system through the exhaust switch until the residual gas is exhausted and the air pressure is stable. Then the system automatically turns on the second pressure reduction module. After the second pressure reduction module reduces the input air pressure to a second pressure value, it inputs the gas with the second pressure value into the mass flow control module 12. The mass flow control module 12 delivers gas according to a preset flow rate. At this time, the system automatically turns on N switch control modules 13 to first use the delivered gas as the filling gas to discharge the existing residual gas in the system until the air pressure of the system is stable. After the air pressure of the system is stable, the system automatically closes the exhaust switch. Thus, the air pressure stabilization device 11 realizes the control of stabilizing the air pressure of the intake gas of the system.

[0057] It can be as Figure 3 shown Figure 3 Figure 1 shows a schematic circuit connection diagram of a protection system for a detector in an application example. After manually opening the valve of the gas container and turning on the secondary pressure reducing valve, the secondary pressure reducing valve receives the intake gas discharged from the gas container, reduces the pressure of the intake gas to a first pressure value, and then the system automatically turns on the two-way two-position solenoid valve. The 1-2 gas distribution module divides the gas with the first pressure value into two paths of gas. One path of gas is used as the filling gas to discharge the existing residual gas in the system through the two-way two-position solenoid valve until the residual gas is exhausted and the air pressure is stable. Then the system automatically turns on the tertiary pressure reducing valve. After the tertiary pressure reducing valve reduces the input air pressure to a second pressure value, it inputs the gas with the second pressure value into the mass flow controller. The mass flow controller delivers gas according to a preset flow rate. At this time, the system automatically turns on the 4-way two-way two-position solenoid valve to first use the delivered gas as the filling gas to discharge the existing residual gas in the system until the air pressure of the system is stable. After the air pressure of the system is stable, the system automatically closes the two-way two-position solenoid valve representing the exhaust switch. Thus, the air pressure stabilization device 11 realizes the control of stabilizing the air pressure of the intake gas of the system.

[0058] In the implementation of this application, relevant staff only need to manually open the gas container and the secondary pressure reducing valve, and the system automatically analyzes and controls other components.

[0059] In some embodiments of this application, the number of the mass flow control modules is 1; the output end of the mass flow control module is connected to the input ends of the respective gas branches through a gas distribution module.

[0060] Specifically, in the embodiment of the present application, the number of mass flow control modules is 1. Assuming that the number of gas branches is 4, the output end of the mass flow control module evenly divides the gas flow output by the mass flow control module into 4 parts through a gas distribution module, and then connects to the input ends of each of the gas branches through the gas distribution module. That is to say, assuming that the preset flow rate is 240 ml / min, the gas distribution module evenly divides the preset flow rate of 240 ml / min into 4 parts of 60 ml / min flow rate, and outputs the 60 ml / min flow rate to the 4 gas branches respectively.

[0061] It can be as Figure 4 shown, Figure 4 Fig. shows a schematic circuit connection diagram of a protection system of a detector in an application example. In this example, the number of gas branches is 4, and the output end of the mass flow controller evenly divides the gas flow into 4 parts through a 1-4 gas distribution module, and then connects to the input ends of each of the gas branches through the 1-4 gas distribution module. That is to say, assuming that the preset flow rate is 240 ml / min, the 1-4 gas distribution module evenly divides the preset flow rate of 240 ml / min into 4 parts of 60 ml / min flow rate, and outputs the 60 ml / min flow rate to the 4 gas branches respectively.

[0062] It should be noted that, in other examples, if the number of gas branches is 8, a 1-8 gas distribution module can be used; if the number of gas branches is 12, a 1-12 gas distribution module can be used, and so on.

[0063] It is not difficult to find that the embodiment of the present application is a system embodiment parallel to the Figure 2 corresponding embodiment. Since the cost of the mass flow control module is relatively high, in the embodiment of the present application, by setting the number of mass flow control modules to 1 and assisting with a gas distribution module to evenly divide and transmit the gas flow to each branch, it is beneficial to reduce costs.

[0064] In some embodiments of the present application, the system is specifically configured to, when detecting an abnormality in the gas flow, issue a prompt message indicating that there is a risk of damage to the detector 14 corresponding to the gas branch where the gas flow is located.

[0065] Specifically, by issuing a prompt message indicating that there is a risk of damage to the detector 14 corresponding to the gas branch where the gas flow is located, it is beneficial for relevant users to immediately discover the possible risk of damage, and then the risk of damage can be processed in a timely manner, such as performing a risk check, repair, replacement, etc. on the detector 14.

[0066] In some embodiments of the present application, the system is specifically configured to, when detecting an abnormality in the gas flow rate, control the mass flow control module to adjust the magnitude of the preset flow rate according to the preset flow rate and the number of gas branches with abnormalities.

[0067] For example, assume that the preset flow rate is 480 ml / min and the number of preset gas branches is 8, then the gas flow rate of each branch is 60 ml / min. If the gas flow rate of one of the branches is abnormal, the mass flow control module can adjust the preset flow rate to 480 ml / min; if the gas flow rates of two of the branches are abnormal, the mass flow control module can adjust the preset flow rate to 420 ml / min.

[0068] In the embodiments of the present application, when one or some gas branches in the system are abnormal, the system can control the mass flow control module to adjust the magnitude of the preset flow rate according to the preset flow rate and the number of gas branches with abnormalities, so that the gas pressure of other gas branches except those with abnormalities can be maintained at a normal level without affecting the normal use of the user.

[0069] In some embodiments of the present application, the system further includes: a gas mixing module and a second flow rate measurement module; the output ends of each gas branch are respectively connected to the input end of the gas mixing module, and the output end of the gas mixing module is connected to the input end of the second flow rate measurement module.

[0070] The gas mixing module is used to converge the gases output by each gas branch;

[0071] The second flow rate measurement module is used to measure the flow rate of the gases output by each converged gas branch to obtain a measurement result, so that the system can display the measurement result.

[0072] In some examples, the second flow rate measurement module is specifically a rotameter.

[0073] Specifically, assume that the number of gas branches is 4, namely gas branch A to gas branch D, and the preset flow rate is 240 ml / min, then the normal flow rate of each gas branch is 60 ml / min. If the system operates normally without air leakage or the phenomenon that detector A leaks without membrane rupture, the flow rate of the gases output by each gas branch converged by the gas mixing module should be 240 ml / min, and this measurement result of 240 ml / min will be displayed. Otherwise, if the flow rate of the gases output by each gas branch converged by the gas mixing module is 180 ml / min, it means that one of the gas branches is abnormal. By displaying this 180 ml / min, it is convenient for relevant staff to know the operating state of the current system.

[0074] In some examples, the measurement results are specifically displayed on a display screen of a device on which the system operates.

[0075] You can Figure 5 As shown, Figure 5 The circuit connection diagram of the protection system of a detector in an application example is shown. In this example, the number of gas branches is 4. Assuming the preset flow rate is 240ml / min, the normal flow rate of each gas branch is 60ml / min. If the system operates normally, there is no leakage or the detector A leaks without membrane rupture, then the 1-4 gas combining modules converge the flow rate of the gas output from each of the gas branches, and the measurement result measured by the rotor flowmeter should be 240ml / min, and the measurement result of 240ml / min is displayed. Otherwise, if the 1-4 gas combining modules converge the flow rate of the gas output from each of the gas branches, and the measurement result measured by the rotor flowmeter is 180ml / min, it means that one of the gas branches has an abnormality. By displaying the 180ml / min, it is convenient for relevant staff to know the current operating status of the system.

[0076] It is not difficult to find that in the embodiment of the present application, by using the combined gas module and the second flow measurement module in combination, the system displays the measurement results, which makes it convenient for relevant staff to intuitively understand the current operating status of the system and improve the work efficiency of relevant staff.

[0077] In some embodiments of the present application, the system may further include a gas filtration module, and the gas filtration module is used to filter the gas to be discharged before discharging it.

[0078] Specifically, if Figure 6 As shown, Figure 6 A circuit diagram of a detector protection system in an application example is shown. The gas discharged from the two-position, two-way solenoid valve representing the exhaust module can be filtered before being discharged, and the gas output from the rotor flowmeter can also be filtered before being discharged, which is beneficial to environmental protection.

[0079] The present application also provides a detector protection method, applicable to a system as described in any of the above embodiments, comprising: controlling the pressure of the intake gas until the pressure is stable; when the pressure is stable, delivering the gas at a preset flow rate so that the gas is delivered to each gas branch; measuring the gas flow rate in each gas branch to detect whether there is an abnormality in the gas flow rate, and controlling the gas in each gas branch to output in one direction. When an abnormality in the gas flow rate is detected, the preset flow rate is automatically adjusted, and the gas branch corresponding to the abnormal gas flow rate is disconnected.

[0080] It is not difficult to find that the embodiments of the present application are method embodiments corresponding to the system embodiments. The methods and systems in the embodiments of the present application correspond one by one. The implementation details in any of the above system embodiments are equally applicable to the embodiments of the present application. To avoid repetition, they will not be elaborated here.

[0081] The method and / or embodiments in the embodiments of the present application can be implemented as a computer software program. For example, the embodiments of the present disclosure include a computer program product, which includes a computer program carried on a computer-readable medium. The computer program contains program codes for executing the method shown in the flowchart. When the computer program is executed by a processing unit, the above functions defined in the method of the present application are executed.

[0082] It should be noted that the computer-readable medium described in the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0083] In the present application, the computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries the computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and the computer-readable medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0084] Computer program code for performing the operations of this application can be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, by connecting through the Internet using an Internet service provider).

[0085] The flowcharts or block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of devices, methods, and computer program products according to various embodiments of this application. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0086] As another aspect, embodiments of this application also provide a computer-readable medium, which can be included in the devices described in the above embodiments; or it can exist separately and not be assembled into the device. The above computer-readable medium carries one or more computer-readable instructions, and the computer-readable instructions can be executed by a processor to implement the steps of the methods and / or technical solutions of the foregoing embodiments of this application.

[0087] In a typical configuration of this application, the terminal and the devices of the service network both include one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0088] The memory may include non-permanent memory in the form of computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The memory is an example of computer-readable media.

[0089] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can store information by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information that can be accessed by a computing device.

[0090] In addition, an embodiment of the present application also provides a computer program, which is stored in a computer device, enabling the computer device to execute the method executed by the control code.

[0091] It should be noted that the present application can be implemented in software and / or a combination of software and hardware. For example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In some embodiments, the software program of the present application can be executed by a processor to implement the above steps or functions. Similarly, the software program (including related data structures) of the present application can be stored in a computer-readable recording medium, such as a RAM memory, a magnetic or optical drive, or a floppy disk and similar devices. Additionally, some steps or functions of the present application can be implemented using hardware, for example, as a circuit that cooperates with a processor to execute each step or function.

[0092] For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be construed as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. The multiple units or devices stated in the apparatus claims can also be implemented by one unit or device through software or hardware. The words such as "first" and "second" are used to denote names and do not denote any particular order.

Claims

1. A protection system for a detector, characterized in that, The system includes: a pneumatic stability device, a mass flow control module, a switch control module, a detector, a first flow measurement module, and a gas one-way control module; wherein, the number of the switch control module, the detector, the first flow measurement module, and the gas one-way control module is N each, and N is an integer greater than 1; The output end of the pneumatic stability device is connected to the input end of the mass flow control module. Each of the switch control module, the detector, the first flow measurement module, and the gas one-way control module is connected in sequence to form a gas branch. The gas branches are connected in parallel. The input ends of the gas branches are respectively connected to the output end of the mass flow control module, and the output ends of the gas branches are used for gas output; The pneumatic stability device is used to control the pressure of the inlet gas to be stable; The mass flow control module is used to deliver gas at a preset flow rate when the pressure is stable, so that the gas is delivered to each gas branch; The switch control module is used to control the on-off of the corresponding gas branch; The first flow measurement module is used to measure the gas flow rate in the corresponding gas branch after the gas reacts with the detector, so that the system can detect whether there is an abnormality in the gas flow rate; The gas one-way control module is used to control the one-way output of the gas in the corresponding gas branch; Wherein, when the system detects that there is an abnormality in the gas flow rate, the system controls the mass flow control module to adjust the size of the preset flow rate, and controls the switch control module of the gas branch corresponding to the abnormal gas flow rate, so that the corresponding gas branch is disconnected; Wherein, the pneumatic stability device includes a first pressure reduction module, a 1-2 gas distribution module, an exhaust switch, and a second pressure reduction module; the output end of the first pressure reduction module is connected to the input end of the 1-2 gas distribution module, and the output end of the 1-2 gas distribution module is connected to a parallel branch composed of the exhaust switch and the second pressure reduction module; the first pressure reduction module is used to reduce the pressure of the inlet gas to a first pressure value; the 1-2 gas distribution module is used to divide the gas with the first pressure value into two paths of gas. One path of gas is used as filling gas to discharge the remaining gas through the open exhaust switch. After the remaining gas is exhausted to a stable pressure, the exhaust switch automatically closes, so that the other path of gas is input to the second pressure reduction module; the second pressure reduction module is used to reduce the input pressure to a second pressure value, and the second pressure value is less than the first pressure value.

2. The system according to claim 1, wherein The number of the mass flow control modules is N; Each of the mass flow control modules is connected to each of the switch control modules in one-to-one correspondence.

3. The system according to claim 1, characterized in that, The number of the mass flow control modules is 1; The output end of the mass flow control module is connected to the input ends of the gas branches through a gas distribution module.

4. The system according to any one of claims 1 to 3, characterized in that The system is specifically used to send a prompt message indicating that there is a risk of damage to the detector of the gas branch corresponding to the gas flow rate when detecting that there is an abnormality in the gas flow rate.

5. The system according to any one of claims 1 to 3, characterized in that The system is specifically configured to, when detecting an abnormality in the gas flow rate, control the mass flow control module to adjust the magnitude of the preset flow rate according to the preset flow rate and the number of gas branches with an abnormality.

6. The system according to claim 1, characterized in that, The system further includes: a gas mixing module and a second flow rate measurement module; The output ends of the respective gas branches are respectively connected to the input end of the gas mixing module, and the output end of the gas mixing module is connected to the input end of the second flow rate measurement module; The gas mixing module is configured to converge the gases output from the respective gas branches; The second flow rate measurement module is configured to measure the flow rate of the gases output from the respective converged gas branches to obtain a measurement result, so that the system displays the measurement result.

7. The system according to claim 1, wherein The system further includes a gas filtration module; The gas filtration module is configured to filter the gas to be discharged and then discharge it.

8. The system according to claim 1, wherein If the number of detectors increases, the system controls the mass flow control module to increase the preset flow rate; if the number of detectors decreases, the system controls the mass flow control module to decrease the preset flow rate.

9. A protection method for a detector, characterized in that, Applied to the system according to any one of claims 1-8, the method includes: Controlling the air pressure of the intake gas until the air pressure is stable; When the air pressure is stable, delivering the gas at a preset flow rate so that the gas is delivered to each gas branch; Respectively measuring the gas flow rates in the respective gas branches to detect whether there is an abnormality in the gas flow rate, and controlling the gases in the respective gas branches to be output unidirectionally; Wherein, when detecting an abnormality in the gas flow rate, automatically adjusting the magnitude of the preset flow rate, and controlling the gas branch corresponding to the abnormal gas flow rate to be disconnected.

10. A computer-readable medium having computer program instructions stored thereon, the computer program instructions being executable by a processor to implement the method according to claim 9.

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