Control device, control method and control system for controlling gas flow

Abstract

The invention discloses a control device, a control method and a control system for controlling gas flow, and relates to the field of gas flow control. The device comprises a control valve, a first flow monitoring device, a first flow adjusting device and a controller, a gas supply pipeline communicated with a gas supply device is connected with the first flow monitoring device and the control valve, and the first flow monitoring device monitors the flow of first gas in the gas supply pipeline in real time; the controller is electrically connected with the first flow monitoring device, the first flow adjusting device and the control valve, the gas supply pipeline is provided with a first branch and a second branch, the first branch is connected with the gas using device, the second branch is connected with the first flow adjusting device, the control valve has a first state and a second state, and the first state and the second state correspond to connection and disconnection of the first branch or connection and disconnection of the second branch respectively. According to the control device disclosed by the invention, the gas can rapidly and stably reach a set value in the process from gas cut-off to gas conduction, and the accuracy of a test result can be ensured while the test time is shortened and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of gas flow control, and particularly relates to a control device, a control method, and a control system for controlling gas flow. Background Art

[0002] Currently, accurate adjustment and control of gas flow are required in many application scenarios. For example, in some industrial and experimental scenarios, precise control of gas flow is necessary to ensure the accuracy of test results. However, in the existing devices for achieving stable gas flow, during the process of cutting off the gas to making it conductive, the gas flow rate is slow, and the time for the gas to stably reach the set value is long, which leads to an extended test time, low efficiency, and may also affect the accuracy of test results. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that in the existing devices for achieving stable gas flow, during the process of cutting off the gas to making it conductive, the gas flow rate is slow, and the time for the gas to stably reach the set value is long, and to provide a control device, a control method, and a control system for controlling gas flow.

[0004] The present invention solves the above technical problem through the following technical solutions:

[0005] The present invention provides a control device for controlling gas flow, and the control device includes: a control valve, a first flow monitoring device, a first flow regulating device, and a controller;

[0006] The first flow monitoring device and the control valve are sequentially connected to the gas supply pipeline communicating with the gas supply device, and the first flow monitoring device is used to monitor the first gas flow in the gas supply pipeline in real time;

[0007] The controller is electrically connected to the first flow monitoring device, the first flow regulating device, and the control valve respectively; the gas supply pipeline includes a first branch and a second branch, a gas-using device is connected to the first branch, and the second branch is connected to the first flow regulating device;

[0008] The control valve has a first state and a second state. When the control valve is in the first state, the second branch is communicated, and the first branch is disconnected. The controller is used to control the first flow regulating device to adjust the gas flow in the second branch according to the first gas flow and the preset gas flow;

[0009] When the control valve is in the second state, the first branch is communicated and the second branch is disconnected.

[0010] In this solution, the gas supply pipeline is set to have two branches. When the control valve is in the first state, the second branch is connected and the first branch is disconnected. Then, based on the first gas flow rate detected by the first flow monitoring device and the preset gas flow rate, the opening degree of the first flow regulating device is adjusted so that the gas flow rate in the second branch meets the preset gas flow rate. After the gas flow rate in the second branch stabilizes, the control valve is adjusted to the second state, causing the first branch to be connected and the second branch to be disconnected. The gas supply device supplies gas to the gas-using device connected to the first branch. This device enables the gas to quickly and stably reach the set value during the process of cutting off and then conducting the gas, shortening the test duration, improving the test efficiency, and ensuring the accuracy of the test results at the same time.

[0011] Preferably, the control valve includes a first solenoid valve and a second solenoid valve;

[0012] The first solenoid valve is arranged upstream of the gas-using device on the first branch, and the second solenoid valve is arranged upstream of the first flow regulating device on the second branch;

[0013] The first state is the state where the first solenoid valve is cut off and the second solenoid valve is conducting;

[0014] The second state is the state where the second solenoid valve is cut off and the first solenoid valve is conducting.

[0015] In this solution, by respectively arranging a solenoid valve on the two branches, the cutting off or conducting of the gas in the two branches can be achieved by setting the state of the solenoid valve, i.e., cutting off or conducting, which facilitates subsequent gas flow rate testing.

[0016] Preferably, when the control valve is in the first state, the controller is used to receive the first gas flow rate obtained by the first flow monitoring device. If the first gas flow rate does not meet the preset gas flow rate, the controller controls the first flow regulating device to adjust the opening degree.

[0017] In this solution, the condition that the first gas flow rate meets the preset gas flow rate is achieved by controlling the first flow regulating device to adjust the opening degree.

[0018] Preferably, the control device further includes a second flow regulating device electrically connected to the controller. The second flow regulating device is arranged on the gas supply pipeline and is located between the first flow monitoring device and the control valve;

[0019] The second flow regulating device is configured to adjust the opening degree to make the first gas flow rate meet the preset gas flow rate if the first gas flow rate does not meet the preset gas flow rate.

[0020] Preferably, the control device further includes a second flow monitoring device electrically connected to the controller. The second flow monitoring device is disposed in the first branch and at the gas-using device, and is configured to monitor in real time the second gas flow rate at the gas-using device.

[0021] Preferably, the control device further includes an exhaust device. The exhaust device is installed downstream of the first flow regulating device in the second branch, and is configured to discharge the gas in the second branch to the outside of the control device.

[0022] The present invention also provides a control method for controlling gas flow rates. The control method is applied to the above-described control device for controlling gas flow rates, and the control method includes:

[0023] Obtaining the first gas flow rate monitored in real time by the first flow monitoring device;

[0024] If the control valve is in the first state and the first gas flow rate does not meet the preset gas flow rate, controlling the first flow regulating device to adjust the opening degree so that the first gas flow rate meets the preset gas flow rate;

[0025] Receiving a control instruction and switching the control valve based on the control instruction so that the control valve is in the second state.

[0026] Preferably, when the control valve is in the second state, the second gas flow rate is consistent with the first gas flow rate.

[0027] The present invention also provides a control system for controlling gas flow rates. The control system includes the above-described control device for controlling gas flow rates, and the control system further includes: a gas supply device and a gas-using device;

[0028] The gas supply device is configured to supply gas to the control device and transport it to the gas-using device;

[0029] The gas-using device is configured to receive gas.

[0030] The present invention also provides an electronic device. The electronic device includes a processor and a memory. At least one instruction or at least one segment of program is stored in the memory, and the at least one instruction or the at least one segment of program is loaded and executed by the processor to implement the above-described control method for controlling gas flow rates.

[0031] The present invention also provides a computer-readable storage medium, in which at least one instruction or at least one program segment is stored, and the at least one instruction or the at least one program segment is loaded and executed by a processor to implement the control method for controlling gas flow as described above.

[0032] The positive and progressive effects of the present invention are as follows:

[0033] In the present invention, the gas supply pipeline is set to two branches. When the control valve is in the first state, the second branch is connected and the first branch is disconnected. Then, based on the first gas flow rate detected by the first flow rate monitoring device and the preset gas flow rate, the opening degree of the first flow rate regulating device is adjusted so that the gas flow rate in the second branch meets the preset gas flow rate. When the gas flow rate in the second branch is stable, the control valve is adjusted to the second state so that the first branch is connected and the second branch is disconnected. The gas supply device supplies gas to the gas-using device connected to the first branch. This device realizes that during the process of cutting off the gas to making it conductive, the gas can quickly and stably reach the set value, shortening the test duration, improving the test efficiency, and ensuring the accuracy of the test results at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of a control system including a control device for controlling gas flow provided in an embodiment of the present invention.

[0035] Figure 2 It is a schematic diagram of the control principle of the control device when the control valve is in the first state provided in an embodiment of the present invention.

[0036] Figure 3 It is a schematic diagram of the control principle of the control device when the control valve is in the second state provided in an embodiment of the present invention.

[0037] Figure 4 It is a schematic diagram of the flow of a control method for controlling gas flow provided in an embodiment of the present invention.

[0038] Figure 5 It is a schematic diagram of a control device using a single flow regulating valve for control in the prior art provided in an embodiment of the present invention.

[0039] Figure 6 It is a graph of the gas flow rate change at the gas-using end when using a single flow regulating valve for control in the prior art provided in an embodiment of the present invention.

[0040] Figure 7 It is a schematic diagram of a control device using a single solenoid valve and a flow regulating valve for control in the prior art provided in an embodiment of the present invention.

[0041] Figure 8This is a graph showing the change in gas consumption at the gas-using end when using a single solenoid valve and a flow regulating valve for control in the prior art provided in the embodiments of the present invention.

[0042] Figure 9 This is a graph showing the change in gas consumption at the gas-using end when using the control device for controlling gas flow provided by the present invention for control in the embodiments of the present invention.

[0043] Explanation of reference numerals:

[0044] Control valve 1

[0045] First solenoid valve 11

[0046] Second solenoid valve 12

[0047] First flow monitoring device 2

[0048] First flow regulating device 3

[0049] Controller 4

[0050] Gas supply device 5

[0051] Gas supply pipeline 6

[0052] First branch 61

[0053] Second branch 62

[0054] Gas-using device 7

[0055] Second flow regulating device 8

[0056] Second flow monitoring device 9

[0057] Exhaust device 10 Detailed implementation manners

[0058] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. 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 protection scope of the present application.

[0059] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0060] Please refer to Figures 1 to 9 , this embodiment provides a control device for controlling gas flow. Figure 1 FIG. is a schematic diagram of a control system provided in an embodiment of the present invention, which includes a control device for controlling gas flow. The control device includes: a control valve 1, a first flow monitoring device 2, a first flow regulating device 3, and a controller 4. The first flow monitoring device 2 and the control valve 1 are sequentially connected to the gas supply pipeline 6 communicating with the gas supply device 5. The first flow monitoring device 2 is used to monitor the first gas flow in the gas supply pipeline 6 in real time. The controller 4 is electrically connected to the first flow monitoring device 2, the first flow regulating device 3, and the control valve 1 respectively. The gas supply pipeline 6 includes a first branch 61 and a second branch 62. An air-using device 7 is connected to the first branch 61, and the second branch 62 is connected to the first flow regulating device 3. The control valve 1 has a first state and a second state. When the control valve 1 is in the first state, the second branch 62 is connected and the first branch 61 is disconnected. The controller 4 is used to control the first flow regulating device 3 to adjust the gas flow in the second branch 62 according to the first gas flow and the preset gas flow. When the control valve 1 is in the second state, the first branch 61 is connected and the second branch 62 is disconnected.

[0061] By setting the gas supply pipeline 6 into two branches, when the control valve 1 is in the first state, the second branch 62 is connected and the first branch 61 is disconnected. Then, based on the first gas flow detected by the first flow monitoring device 2 and the preset gas flow, the opening degree of the first flow regulating device 3 is adjusted so that the gas flow in the second branch 62 meets the preset gas flow. When the gas flow in the second branch 62 is stable, the control valve 1 is adjusted to the second state so that the first branch 61 is connected and the second branch 62 is disconnected. The gas supply device 5 supplies gas to the air-using device 7 connected to the first branch 61. This device realizes that during the process of cutting off the gas to conduction, the gas can quickly and stably reach the set value, shortening the test duration, improving the test efficiency, and ensuring the accuracy of the test results at the same time.

[0062] In this embodiment, the first flow monitoring device 2 is a flow sensor, and the first flow regulating device 3 is a bypass (second branch 62) flow regulating valve.

[0063] In this embodiment, the control valve 1 includes a first solenoid valve 11 and a second solenoid valve 12. The first solenoid valve 11 is arranged upstream of the gas-using device 7 in the first branch 61, and the second solenoid valve 12 is arranged upstream of the first flow regulating device 3 in the second branch 62. The first state is the state where the first solenoid valve 11 is cut off and the second solenoid valve 12 is conducting, and the second state is the state where the second solenoid valve 12 is cut off and the first solenoid valve 11 is conducting. By arranging one solenoid valve on each of the two branches respectively, the cut-off or conduction of the gas in the two branches can be realized by setting the state of the solenoid valve, i.e., cut-off or conduction, which is convenient for subsequent gas flow testing.

[0064] Specifically, Figure 2 FIG. is a schematic diagram of the control principle of the control device when the control valve 1 of the embodiment of the present invention is in the first state. The first solenoid valve 11 and the second solenoid valve 12 are one-way conducting solenoid valves. When the control valve 1 is switched to the first state, as Figure 2 shown, the gas supply device 5 supplies gas to the gas supply pipeline 6, and the gas flows through the first flow monitoring device 2. Since the first solenoid valve 11 is cut off and the second solenoid valve 12 is conducting, the gas flows through the second solenoid valve 12 and the first flow regulating device 3. At this time, the first flow monitoring device 2 transmits the collected first gas flow to the controller 4. If the first gas flow does not meet the preset gas flow, the controller 4 controls the first flow regulating device 3 to adjust the opening degree so that the gas flow in the second branch 62 meets the preset gas flow.

[0065] In this embodiment, Figure 3 FIG. is a schematic diagram of the control principle of the control device when the control valve 1 of the embodiment of the present invention is in the second state. When the gas flow in the second branch 62 meets the preset gas flow and the gas flow in the second branch 62 remains stable, the control valve 1 is switched to the second state, as Figure 3 shown. At this time, the first solenoid valve 11 is conducting and the second solenoid valve 12 is cut off, and the gas flows through the first flow monitoring device 2 and the first solenoid valve 11 and reaches the gas-using device 7. Since the gas flow in the second branch 62 has always been in a stable state, after the first branch 61 is conducted, the gas flow in the gas supply pipeline 6 is also stable and can be directly supplied to the gas-using device 7. Therefore, the gas flow in the first branch 61 can quickly reach the set value and remain in a stable state, which can shorten the test time, improve the test efficiency and ensure the accuracy of the test results.

[0066] In other embodiments, the control valve 1 may further include a three-way solenoid valve, which is arranged at the intersection of the main road of the gas supply pipeline 6 and the first branch 61 and the second branch 62.

[0067] In this embodiment, as Figure 1 shown, the control device further includes a second flow regulating device 8 electrically connected to the controller 4. The second flow regulating device 8 is disposed on the gas supply line 6 and located between the first flow monitoring device 2 and the control valve 1. The second flow regulating device 8 is configured to adjust the opening degree to make the first gas flow meet the preset gas flow if the first gas flow does not meet the preset gas flow. Specifically, when the gas supply device 5 supplies gas for the first time, the controller 4 controls the second flow regulating device 8 to adjust the opening degree, so that the gas leads to the second branch 62 and ensures that the gas flow in the gas supply line 6 meets the preset gas flow.

[0068] In this embodiment, as Figure 1 shown, the control device further includes a second flow monitoring device 9 electrically connected to the controller 4. The second flow monitoring device 9 is disposed on the first branch 61 and located at the gas using device 7. The second flow monitoring device 9 is used to monitor the second gas flow at the gas using device 7 in real time. Here, the second flow monitoring device 9 is a flow sensor.

[0069] Specifically, when the control valve 1 switches from the first state to the second state, the second flow monitoring device 9 monitors the second gas flow at the gas using device 7 in real time, and the second gas flow at this time is consistent with the first gas flow.

[0070] In this embodiment, continuing the elaboration in combination with Figure 1 this, the control device further includes an exhaust device 10. The exhaust device 10 is installed downstream of the first flow regulating device 3 on the second branch 62. The exhaust device 10 is configured to discharge the gas in the second branch 62 to the outside of the control device.

[0071] In this embodiment, when supplying gas to multiple gas using devices 7 that do not need to supply gas simultaneously, only an additional solenoid valve connected in parallel with the first solenoid valve 11 and the second solenoid valve 12 needs to be led out to other branches, so as to realize the gas use control for multiple gas using devices 7. Therefore, this control device has good scalability.

[0072] The embodiment of the present invention further provides a control method for controlling gas flow. Figure 4 As shown in the flowchart of the control method for controlling gas flow provided in the embodiment of the present invention, this specification provides the method operation steps such as in the embodiment or the flowchart, but based on routine or non-creative labor, there may be more or fewer operation steps. The step sequence listed in the embodiment is only one way among the execution sequences of numerous steps and does not represent the only execution sequence. When the actual system or server product executes, it can be executed in the order shown in the embodiment or the drawing or executed in parallel (for example, in an environment of parallel processors or multi-threaded processing). Specifically, as Figure 4As shown, the control method is applied to the above-mentioned control device for controlling gas flow rate, and the control method includes:

[0073] S401: Obtain the first gas flow rate monitored in real time by the first flow rate monitoring device.

[0074] S403: If the control valve is in the first state and the first gas flow rate does not meet the preset gas flow rate, control the first flow rate regulating device to adjust the opening degree so that the first gas flow rate meets the preset gas flow rate.

[0075] In this embodiment, in combination with Figure 2 it is elaborated that if the control valve 1 is in the first state, at this time the first electromagnetic valve 11 is cut off, the second electromagnetic valve 12 is opened to conduct gas, and the opening degree of the second flow rate regulating device 8 remains unchanged. At this time, the opening degree can ensure that the first gas flow rate is greater than the preset gas flow rate (the state of not meeting the preset gas flow rate), or the opening degree ensures that the first gas flow rate is equal to the preset gas flow rate (the state of meeting the preset gas flow rate). If the first gas flow rate monitored by the first flow rate monitoring device 2 does not meet the preset gas flow rate, then control the first flow rate regulating device 3 to adjust the opening degree so that the first gas flow rate meets the preset gas flow rate.

[0076] S405: Receive a control instruction and switch the control valve based on the control instruction so that the control valve is in the second state.

[0077] In this embodiment, in combination with Figure 3 it is continued to elaborate that when gas needs to be supplied to the gas-using device 7, a control instruction is received. This control instruction is used to indicate switching the state of the control valve 1 so that it is in the second state. At this time, the first electromagnetic valve 11 is opened to conduct gas, the second electromagnetic valve 12 is cut off, and the gas is transported to the gas-using device 7 through the first branch 61. At this time, the gas flow rate at the gas-using device 7 (that is, the second gas flow rate obtained by the second flow rate monitoring device 9) meets the preset gas flow rate, and the monitored second gas flow rate is consistent with the first gas flow rate.

[0078] An embodiment of the present invention also provides a control system for controlling gas flow rate. The control system includes the above-mentioned control device for controlling gas flow rate. The control system further includes: a gas supply device and a gas-using device. The gas supply device is used to supply gas to the control device and transport it to the gas-using device, and the gas-using device is configured to receive gas.

[0079] Next, the existing gas flow rate control device and the control device in the present application will be analyzed and the effects will be compared:

[0080] Figure 5 It is a schematic diagram of a control device using a single flow rate regulating valve in the prior art provided by an embodiment of the present invention. Figure 6The flow variation diagram of the gas-using end when using a single flow regulating valve for control in the prior art provided by the embodiments of the present invention is as follows. Figure 5 and Figure 6 As shown, the gas source is connected to the gas-using device through a supply pipeline. A flow sensor and a flow regulating valve are arranged on the supply pipeline and are located between the gas source and the gas-using device. A gas-using end flow sensor is also installed at the gas-using device. From Figure 6 the data in, it can be seen that when only using a single flow regulating valve for control, a switching signal is sent at time 0 to make the supply pipeline change from the cut-off state to the conducting state. The time required for the gas-using end flow to stabilize to the set value from the time the signal is sent is about 6 - 8 seconds.

[0081] Figure 7 The schematic diagram of a control device using a single solenoid valve and a flow regulating valve for control in the prior art provided by the embodiments of the present invention. Figure 8 The flow variation diagram of the gas-using end when using a single solenoid valve and a flow regulating valve for control in the prior art provided by the embodiments of the present invention is as follows. Figure 7 and Figure 8 As shown, the gas source is connected to the gas-using device through a supply pipeline. A flow sensor, a solenoid valve, and a flow regulating valve are arranged in sequence on the supply pipeline and are located between the gas source and the gas-using device. A gas-using end flow sensor is also installed at the gas-using device. From Figure 8 the data in, it can be seen that when only using a single solenoid valve and a flow regulating valve for control, the opening of the flow regulating valve remains in the state before the previous switching from the conducting state to the cut-off state. A switching signal is sent at time 0 to make the pipeline change from the cut-off state to the conducting state again. The time required for the gas-using end flow to stabilize to the set value from the time the signal is sent is about 11 seconds.

[0082] Figure 9 The flow variation diagram of the gas-using end when using the control device for controlling gas flow provided by the present invention for control in the embodiments of the present invention is as follows. Figure 9 As shown, when the supply pipeline is switched from the cut-off state to the conducting state, using the control device provided by the present invention and under the condition of the same control parameters of the flow regulating valve, the gas-using end flow can reach the set value within 2 seconds and remain stable. From the above comparison, it can be known that the control device provided by the present invention can reach the set value at a faster speed.

[0083] The systems, methods, and device embodiments in the embodiments of the present application are based on the same application concept.

[0084] The method embodiments provided in this embodiment can be executed on a computer terminal, a server, or a similar computing device. Taking running on a server as an example, the server may vary greatly due to configuration or performance differences, and may include one or more central processing units (CPUs) (the processor may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory for storing data, and one or more storage media for storing applications or data (such as one or more mass storage devices). Among them, the memory and the storage media can be transient storage or persistent storage. The program stored in the storage media may include one or more modules, and each module may include a series of instruction operations on the server. Further, the central processing unit can be set to communicate with the storage media and execute a series of instruction operations in the storage media on the server. The server may also include one or more power supplies, one or more wired or wireless network interfaces, one or more input / output interfaces, and / or one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so on.

[0085] The input / output interface can be used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by the communication provider of the server. In one example, the input / output interface includes a network interface controller (NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one example, the input / output interface can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0086] In the embodiments of the present invention, an electronic device is also provided. The electronic device includes a processor and a memory, and at least one instruction or at least one segment of program is stored in the memory. The at least one instruction or at least one segment of program is loaded and executed by the processor to implement the control method for controlling the gas flow as described above.

[0087] In the embodiments of the present invention, a computer-readable storage medium is provided. At least one instruction or at least one segment of program is stored in the computer storage medium. The at least one instruction or at least one segment of program is loaded and executed by the processor to implement the control method for controlling the gas flow as described above.

[0088] Optionally, in this embodiment, the above storage medium may be located in at least one of multiple network servers in a computer network. Optionally, in this embodiment, the above storage medium may include, but is not limited to: various media that can store program codes such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), mobile hard disks, magnetic disks, or optical discs.

[0089] On the other hand, this embodiment also provides a computer program product. The computer program product includes a computer program. The computer program is stored in a readable storage medium. At least one processor of the computer device reads and executes the computer program, so that the computer device executes the control method for controlling the gas flow in the embodiments of the present disclosure.

[0090] It should be noted that: the above sequence of this embodiment is only for description and does not represent the superiority or inferiority of the embodiment. And the above specific embodiments of this specification have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be executed in a different order from that in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the specific order or consecutive order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0091] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, reference can be made to the partial description of the method embodiments.

[0092] Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a magnetic disk, or an optical disc, etc.

[0093] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control device for controlling gas flow rate, characterized in that, The control device includes: a control valve, a first flow monitoring device, a first flow regulating device, and a controller; The first flow monitoring device and the control valve are sequentially connected to the gas supply pipeline communicating with the gas supply device. The first flow monitoring device is used to monitor the first gas flow in the gas supply pipeline in real time; The controller is electrically connected to the first flow monitoring device, the first flow regulating device, and the control valve respectively; the gas supply pipeline includes a first branch and a second branch. An air-using device is connected to the first branch, and the second branch is connected to the first flow regulating device; The control valve has a first state and a second state. When the control valve is in the first state, the second branch is connected and the first branch is disconnected. The controller is used to control the first flow regulating device to adjust the gas flow in the second branch according to the first gas flow and the preset gas flow; When the control valve is in the second state, the first branch is connected and the second branch is disconnected.

2. The control device for controlling gas flow according to claim 1, characterized in that The control valve includes a first solenoid valve and a second solenoid valve; The first solenoid valve is arranged upstream of the air-using device on the first branch, and the second solenoid valve is arranged upstream of the first flow regulating device on the second branch; The first state is the state where the first solenoid valve is cut off and the second solenoid valve is conducted; The second state is the state where the second solenoid valve is cut off and the first solenoid valve is conducted.

3. The control device for controlling gas flow according to claim 1, characterized in that, When the control valve is in the first state, the controller is used to receive the first gas flow obtained by the first flow monitoring device. If the first gas flow does not meet the preset gas flow, the controller controls the first flow regulating device to adjust the opening degree.

4. The control device for controlling the gas flow according to claim 1, wherein, The control device further includes a second flow regulating device electrically connected to the controller. The second flow regulating device is arranged on the gas supply pipeline and between the first flow monitoring device and the control valve; The second flow regulating device is configured to adjust the opening degree to make the first gas flow meet the preset gas flow when the first gas flow does not meet the preset gas flow.

5. The control device for controlling the gas flow according to claim 4, characterized in that, The control device further includes a second flow monitoring device electrically connected to the controller. The second flow monitoring device is arranged on the first branch and at the air-using device. The second flow monitoring device is used to monitor the second gas flow at the air-using device in real time.

6. The control device for controlling the gas flow according to claim 1, wherein, The control device further includes an exhaust device. The exhaust device is installed downstream of the first flow regulating device on the second branch. The exhaust device is configured to discharge the gas in the second branch to the outside of the control device.

7. A control method for controlling gas flow rate, characterized in that, The control method is applied to the control device for controlling gas flow according to any one of claims 1-6. The control method includes: Obtaining the first gas flow monitored in real time by the first flow monitoring device; If the control valve is in the first state and the first gas flow rate does not meet the preset gas flow rate, control the first flow rate regulating device to adjust the opening degree so that the first gas flow rate meets the preset gas flow rate; Receive a control instruction and switch the control valve based on the control instruction so that the control valve is in the second state.

8. The control method for controlling gas flow according to claim 7, wherein When the control valve is in the second state, the second gas flow rate is the same as the first gas flow rate.

9. A control system for controlling gas flow, characterized in that, The control system includes the control device for controlling the gas flow rate according to any one of claims 1-6, and the control system further includes: a gas supply device and a gas using device; The gas supply device is used to supply gas to the control device and transport it to the gas using device; The gas using device is configured to receive gas.

10. An electronic device, characterized in that, The electronic device includes a processor and a memory, and at least one instruction or at least one program segment is stored in the memory. The at least one instruction or the at least one program segment is loaded and executed by the processor to perform the control method for controlling the gas flow rate according to any one of claims 7-8.

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