An integrated gas path switching device and method

Abstract

The application belongs to the technical field of electrical control and provides an integrated gas path switching device and method, which comprises an integrated gas path, a gas path inlet switching module and a gas path outlet switching module; the integrated gas path comprises a first inlet channel, a first switching channel and a common outlet channel connected in sequence, and a second inlet channel, a second switching channel and a common outlet channel connected in sequence; the gas path outlet switching module is used for controlling the connection of the first switching channel or the second switching channel with the common outlet channel; and the damping when the medium is delivered to the common outlet channel after the first switching channel or the second switching channel is connected is controllable. The application solves the defects of frequent pipeline leakage and instability in the ordinary pipe connection mode in the gas path, and improves the uncontrollable damping problem caused by the different directions and angles of the pipeline each time.

Description

Technical Field

[0001] This invention belongs to the field of electrical control technology, and in particular relates to a built-in integrated pneumatic circuit switching device and method. Background Technology

[0002] There are many types of solenoid valves used in daily production and life. Different types of solenoid valves play different roles in fluid control systems such as gas circuits and liquid circuits. As an electromagnetically controlled industrial device, the solenoid valve is a basic component of automation used to control fluids. It is used in pipeline control systems to adjust the direction, flow rate, speed, pressure, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, and the connected pipelines can also affect the direction, flow rate, speed, pressure, and other parameters of the medium.

[0003] Currently, with the continuous improvement of my country's industrial level, the common way to connect pipes in the gas circuit is to use gas adapters to connect various pipelines. During use, gas leaks and instability often occur in the pipelines. For pipelines with requirements on gas flow rate, the damping can become uncontrollable due to the different orientation and angle of the pipeline each time it is placed. Summary of the Invention

[0004] The purpose of this invention is to provide a built-in integrated gas path switching device that can solve the problems of easy gas leakage and unreliability in existing pipe connection methods, and improve or solve the defects of uncontrollable damping.

[0005] The present invention is implemented as follows: a built-in integrated gas path switching device, the built-in integrated gas path switching device comprising: an integrated gas path, a gas path inlet switching module and a gas path outlet switching module;

[0006] The integrated air circuit includes: a first air intake channel, a first switching channel and a common air outlet channel connected in sequence, and a second air intake channel, a second switching channel and a common air outlet channel connected in sequence;

[0007] The gas outlet switching module is used to control the connection between the first switching channel or the second switching channel and the common gas outlet channel; wherein, after the first switching channel or the second switching channel is connected, the damping when delivering the medium to the common gas outlet channel is controllable;

[0008] The common air outlet channel is also connected to a third air inlet channel;

[0009] The air intake switching module can control the air intake of the first air intake channel, the second air intake channel and the third air intake channel.

[0010] To facilitate the implementation of the built-in integrated gas path switching device, another objective of this invention is to provide a built-in integrated gas path switching method, the method comprising:

[0011] Obtain information on gas usage requirements;

[0012] Based on the gas usage requirements, the appropriate gas path is selected for connection, specifically including:

[0013] Select gas path one: Connect the first inlet channel, the first switching channel and the common outlet channel in sequence. The first inlet channel is connected to the gas source of No. 1 gas, and No. 1 gas is output at the outlet of the common outlet channel.

[0014] Select gas path two: Connect the second inlet channel, the second switching channel and the common outlet channel in sequence. The second inlet channel is connected to the gas source of gas No. 2, and gas No. 2 is output at the outlet of the common outlet channel.

[0015] Select gas path three: Connect the third air intake channel and the common air outlet channel. The third air intake channel is connected to the sampling gas, and the sampling gas is output through the outlet of the common air outlet channel.

[0016] This invention provides a built-in integrated gas path switching device, which internally fixes the integrated gas path. The integrated gas path includes: a first air inlet channel, a first switching channel, and a common air outlet channel connected in sequence, as well as a second air inlet channel, a second switching channel, and a common air outlet channel connected in sequence. This realizes the standardization of complex pipelines into a standardized integrated device, reducing the assembly difficulty of complex pipelines. Furthermore, all channels or pipelines are internally fixed, avoiding uncontrollable damping due to different placement directions and angles of the pipelines. At the same time, the high degree of integration also makes the device occupy a small volume and is less prone to defects such as pipeline leakage and instability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a built-in integrated gas path switching device provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the gas outlet switching module in one embodiment;

[0019] Figure 3 This is a schematic diagram of the air intake switching module in one embodiment;

[0020] Figure 4 This is a schematic diagram of the internal airflow of the airflow switching module and the airflow switching module in one embodiment;

[0021] Figure 5 This is a flowchart illustrating the integrated gas path switching device in one embodiment.

[0022] Figure 6 This is a flowchart illustrating a built-in integrated gas path switching method provided in an embodiment of the present invention.

[0023] In the attached diagram: 1-First solenoid valve; 2-Second solenoid valve; 3-Third solenoid valve; 4-Fourth quick-connect connector; 5-Positioning hole; 6-Fixing angle iron; 7-First quick-connect connector; 8-Second quick-connect connector; 9-Pressure relief quick-connect connector; 10-Third quick-connect connector; 11-Built-in integrated gas path switching device; 12-Integrated gas path; 13-Gas path outlet switching module; 14-Gas path inlet switching module; A1-Gas No. 1; A2-Gas No. 2; A3-Sampling gas; B1-Pressure relief port. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] It is understood that the terms "first," "second," etc., used in this invention may be used to describe various elements herein, but unless specifically stated otherwise, these elements are not limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first xx connector may be referred to as a second xx connector, and similarly, a second xx connector may be referred to as a first xx connector.

[0026] Figure 1 An embodiment of the present invention provides a built-in integrated gas path switching device 11, which includes: an integrated gas path 12, a gas path inlet switching module 14, and a gas path outlet switching module 13.

[0027] The integrated air circuit 12 includes: a first air inlet channel, a first switching channel and a common air outlet channel connected in sequence, and a second air inlet channel, a second switching channel and a common air outlet channel connected in sequence.

[0028] The gas outlet switching module 13 is used to control the connection between the first switching channel or the second switching channel and the common gas outlet channel; wherein, after the first switching channel or the second switching channel is connected, the damping when delivering the medium to the common gas outlet channel is controllable;

[0029] The common air outlet channel is also connected to a third air inlet channel;

[0030] The air intake switching module 14 can control the air intake of the first air intake channel, the second air intake channel and the third air intake channel.

[0031] In this embodiment, the integrated air circuit 12 is internally fixed; the length, direction and angle of each channel in the integrated air circuit 12, which includes a first air inlet channel, a first switching channel and a common air outlet channel connected in sequence, as well as a second air inlet channel, a second switching channel and a common air outlet channel connected in sequence, are fixed; this realizes the formation of a standardized integrated device for complex pipelines, reducing the assembly difficulty of complex pipelines; and all channels or pipelines are internally fixed, avoiding uncontrollable damping due to different placement directions and angles of the pipelines; at the same time, the high integration also makes the device occupy a small volume and is less prone to defects such as pipeline leakage and instability.

[0032] In one example of this embodiment, the gas path outlet switching module 13 includes a first solenoid valve 1, a second solenoid valve 2, and a third solenoid valve 3;

[0033] The normally closed port of the first solenoid valve 1 is connected to one end of the first intake channel, and the common port of the first solenoid valve 1 is connected to the normally closed port of the third solenoid valve 3 to form the first switching channel. The other end of the first intake channel is connected to a first quick-connect interface.

[0034] The normally closed port of the second solenoid valve 2 is connected to one end of the second intake channel, and the common port of the second solenoid valve 2 is connected to the normally closed port of the third solenoid valve 3 to form the second switching channel. The other end of the second intake channel is connected to a second quick-connect interface.

[0035] The normally open end of the third solenoid valve 3 is connected to one end of the third air intake channel, the other end of the third air intake channel is connected to a third quick-connect interface, and the common port of the third solenoid valve is connected to the common air outlet channel.

[0036] In one embodiment, the air intake switching module includes a first quick-connect connector 7, a second quick-connect connector 8, and a third quick-connect connector 10, wherein the first quick-connect connector 7, the second quick-connect connector 8, and the third quick-connect connector 10 are respectively disposed on the first quick-connect interface, the second quick-connect interface, and the third quick-connect interface.

[0037] In another embodiment, the air intake switching module 14 includes: a first quick-connect connector 7, a second quick-connect connector 8, a third quick-connect connector 10, and a fourth quick-connect connector 4; wherein, the first quick-connect connector 7 can be inserted into the first quick-connect interface, the second quick-connect connector 8 can be inserted into the second quick-connect interface, the third quick-connect connector 10 can be inserted into the third quick-connect interface, and the fourth quick-connect connector 4 can be inserted into the fourth quick-connect interface provided at the outlet end of the common air outlet channel.

[0038] In this embodiment, when switching the gas path, power is supplied to the first solenoid valve 1 and the third solenoid valve 3, and gas flows through the internal gas path 12. Gas A1 can be output from the fourth quick connector 4. Specifically, the external gas A1 enters the built-in integrated gas path 12 through the first quick connector 7, and enters the first solenoid valve 1 through the internal gas path. At this time, the first solenoid valve 1 is not energized and gas cannot pass through. This is the normally closed state. When the first solenoid valve 1 is energized, the normally closed channel opens. At this time, gas A1 flows from the normally closed port of the first solenoid valve 1 to the common port. Part or all of the gas flows to the normally closed port of the third solenoid valve 3, so that the normally closed port of the third solenoid valve 3 is energized and the gas flows from its normally closed port to the fourth quick connector 4 connected to its common port for use.

[0039] Power is supplied to the second solenoid valve 2 and the third solenoid valve 3 through the internal gas passage 12, and gas A2 can be output at the fourth quick connector 4. Specifically, the external gas A2 enters the device through the second quick connector 8, and enters the normally closed port of the second solenoid valve 2 through the internal gas passage, energizing the solenoid valve 2 and opening its normally closed passage. Gas A2 flows from its normally closed port to the common port, and part or all of the gas A2 flows to the normally closed port of the third solenoid valve 3, energizing the third solenoid valve 3 and opening its normally closed port. Gas flows from its normally closed port to the fourth quick connector 4 connected to the common port, ready for use.

[0040] All solenoid valves are de-energized, allowing sampling gas A3 to be used at the fourth quick-connect connector 4. Gas entering the device via the third quick-connect connector 10 flows internally. With the third solenoid valve 3 de-energized, the sampling gas passes through the normal opening of the third solenoid valve 3 via the third quick-connect connector 10, enters the fourth quick-connect connector 4 connected to its common port, and is then output for analysis and testing of sampling gas A3. The specific gas flow within the integrated gas circuit is as follows: Figure 4 As shown, the schematic diagram can be found in [reference needed]. Figure 5 .

[0041] In one embodiment, the common air outlet channel can be an air path (or air passage) connecting the common port of the first solenoid valve 1, the common port of the second solenoid valve 2, and the common port of the third solenoid valve 3. Both the first and second switching channels have two states: a normally closed state under normal standby conditions and an on state under energized conditions. When the first switching channel is on, it connects the first air inlet channel and the common air outlet channel. Similarly, when the second switching channel is on, it connects the second air inlet channel and the common air outlet channel. Furthermore, the on / off state of the first switching channel can be controlled (or switched) by the first solenoid valve 1; the on / off state of the second switching channel can be controlled (or switched) by the second solenoid valve 2.

[0042] Generally, the terms "normally closed", "normally open", and "common port" used in this invention can be used to describe the on / off state of each solenoid valve. In fact, they are used to facilitate the distinction between the on / off control of the channel when the solenoid valve is energized and de-energized. However, the description of the on / off control of the channel by the solenoid valve is not limited to terms such as "normally closed", "normally open", and "common port".

[0043] In one example of this embodiment, a pressure relief port B1 is connected between the first switching channel and the common air outlet channel, and between the second switching channel and the common air outlet channel.

[0044] In this example, as Figure 5 As shown, a branch line can be connected to the common port of the first solenoid valve 1 and the second solenoid valve 2. This branch line is divided into two lines, which are respectively connected to the pressure relief port B1 and the normally closed port of the third solenoid valve 3. In this way, when transporting gas No. 1 or gas No. 2, pressure can be relieved through the pressure relief port quick connector 9 connected to the pressure relief port B1.

[0045] In one embodiment, such as Figures 1 to 4 As shown, both the air inlet switching module and the air outlet switching module include a panel, and the two oppositely arranged panels form a housing, with the integrated air circuit 12 disposed inside the housing.

[0046] In this embodiment, the first solenoid valve 1, the second solenoid valve 2, and the third solenoid valve 3 can be arranged on the same side, and the panel corresponding to this side can be referred to as the front panel, while the other panel can be referred to as the rear panel. The first quick-connect connector 7, the second quick-connect connector 8, the third quick-connect connector 10, and the fourth quick-connect connector 4 are arranged on the rear panel. The built-in integrated gas circuit connects the corresponding solenoid valves and quick-connect connectors. Since the integrated gas circuit is integrated and fixed, the assembly difficulty of complex pipelines is reduced. When conveying gas, the uncontrollable damping caused by different pipeline placement directions and angles in conventional pipeline connection methods is avoided.

[0047] In one example of this embodiment, the two oppositely arranged panels have a groove on their side that is close to each other, and the groove can accommodate the integrated air passage; any one or both of the surfaces of the two oppositely arranged panels that are close to each other are provided with a positioning structure, which is used for positioning when the panels are docked.

[0048] In one case, the positioning structure includes a positioning hole and a positioning post. The positioning hole is set on one panel, and the positioning post can be set on another panel. The clamping and positioning of the housing assembly is achieved through the insertion and cooperation of the positioning hole and the positioning post.

[0049] In one embodiment, the positioning structure includes a positioning hole 5 and a positioning post. The positioning hole is set at one end of a panel, and a positioning post is also set on the same panel. Conversely, a corresponding positioning post and positioning hole are set on another panel. By combining the staggered positioning holes and positioning posts, the clamping and positioning of the housing assembly is achieved.

[0050] In one example, the groove is filled with a buffer layer; the buffer layer can be made of sponge or rubber. The buffer layer can fill the gaps in the integrated air circuit and enhance the fixation of the integrated air circuit. On the other hand, it can isolate vibration and reduce noise. The sponge can also be used as heat insulation cotton to keep the air warm.

[0051] In one example, the buffer layer is embedded with a sensor group for sensing the temperature, wall pressure, vibration, etc. of the integrated gas path.

[0052] The sensors include patch-type temperature sensors, pressure sensors, and vibration sensors, enabling the monitoring of temperature, wall pressure, vibration, etc. of the integrated gas path, thereby enabling the monitoring of the overall working status of the built-in integrated gas path switching device. It is particularly suitable for the storage and transportation of some explosion-proof gases.

[0053] In one example of this embodiment, one or both of the surfaces of the two oppositely arranged panels are provided with an external structure, which is used to connect the panels to external devices.

[0054] In this example, the external structure includes a fixed angle iron 6, which is an L-shaped structure with connecting holes at both ends. One connecting hole is used for connection with the housing, and the other connecting hole is used for connection with external equipment, such as building facilities, industrial equipment, or structures like walls and support columns.

[0055] In some cases, the fixing angle iron 6 is set on the outer side of either panel; in some scenarios where high precision is required, the fixing angle iron 6 is set on the outer sides of both panels to enhance the fixing effect.

[0056] like Figure 6 As shown, in another embodiment, a built-in integrated gas path switching method is provided for the built-in integrated gas path switching device, the method comprising:

[0057] S61. Obtain information on gas usage requirements;

[0058] S62. Based on the gas usage requirements, select the appropriate gas path to connect, specifically including:

[0059] S621. Select gas path one: Connect the first inlet channel, the first switching channel and the common outlet channel in sequence. The first inlet channel is connected to the gas source of gas number one, and gas number one is output at the outlet of the common outlet channel.

[0060] S622, Select gas path two: Connect the second intake channel, the second switching channel and the common outlet channel in sequence. The second intake channel is connected to the gas source of gas No. 2, and gas No. 2 is output at the outlet of the common outlet channel.

[0061] S623, Select Gas Path Three: Connect the third air intake channel and the common air outlet channel. The third air intake channel is connected to the sampling gas, and the sampling gas is output through the outlet of the common air outlet channel.

[0062] In one embodiment, the method further includes:

[0063] Depressurization is performed during the process of supplying gas No. 1 through the first switching channel or gas No. 2 through the second switching channel.

[0064] In this embodiment, when switching the gas path, power is supplied to the first solenoid valve 1 and the third solenoid valve 3, and gas flows through the internal gas path 12. Gas A1 can be output from the fourth quick connector 4. Specifically, the external gas A1 enters the built-in integrated gas path 12 through the first quick connector 7, and flows through the internal gas path to the normally closed port of the first solenoid valve 1. At this time, the first solenoid valve 1 is not energized, and gas cannot pass through. This is the normally closed state. When the first solenoid valve 1 is energized, the normally closed channel (from the normally closed port to the common port) opens. At this time, gas A1 flows from the normally closed port of the first solenoid valve 1 to the common port. The gas splits into two paths. One path flows to the pressure relief quick connector 9 for pressure relief, and the other path goes to the normally closed port of the third solenoid valve 3, so that the third solenoid valve 3 is energized, its normally closed port opens, and the gas flows from its normally closed port to the fourth quick connector 4 connected to its common port for use.

[0065] Power is supplied to the second solenoid valve 2 and the third solenoid valve 3 through the internal gas passage 12, and gas A2 can be output at the fourth quick connector 4. Specifically, the external gas A2 enters the device through the second quick connector 8, i.e., the integrated gas passage, and enters the normally closed port of the second solenoid valve 2 through the internal gas passage, energizing the solenoid valve 2 and opening its normally closed passage. Gas A2 flows from its normally closed port to the common port, and then the gas splits into two paths. One path flows to the pressure relief quick connector 9 for pressure relief, and the other path leads to the normally closed port of the third solenoid valve 3, energizing the third solenoid valve 3 and opening its normally closed port. The gas then flows from the normally closed port to the fourth quick connector 4 connected to the common port, ready for use.

[0066] All solenoid valves (first solenoid valve 1, second solenoid valve 2, and third solenoid valve 3) are de-energized, and sampling gas A3 can be used at the fourth quick connector 4. That is, the gas enters the device through the third quick connector 10, the third solenoid valve 3 is de-energized, and the sampling gas enters the fourth quick connector 4 connected to its common port through the third quick connector 10 and then exits, ready for analysis and testing of sampling gas A3.

[0067] It should be understood that although the steps in the flowcharts of the various embodiments of the present invention are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the various embodiments may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0068] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A built-in integrated gas path switching device, characterized in that, The built-in integrated gas path switching device includes: an integrated gas path, a gas path inlet switching module, and a gas path outlet switching module; The integrated air circuit includes: a first air intake channel, a first switching channel and a common air outlet channel connected in sequence, and a second air intake channel, a second switching channel and a common air outlet channel connected in sequence; The gas outlet switching module is used to control the connection between the first switching channel or the second switching channel and the common gas outlet channel; wherein, after the first switching channel or the second switching channel is connected, the damping when delivering the medium to the common gas outlet channel is controllable; The common air outlet channel is also connected to a third air inlet channel; The air intake switching module can control the air intake of the first air intake channel, the second air intake channel and the third air intake channel. The air outlet switching module includes a first solenoid valve, a second solenoid valve and a third solenoid valve. The normally closed port of the first solenoid valve is connected to one end of the first intake channel, and the common port of the first solenoid valve is connected to the normally closed port of the third solenoid valve to form the first switching channel. The other end of the first intake channel is connected to a first quick-connect interface. The normally closed port of the second solenoid valve is connected to one end of the second intake channel, and the common port of the second solenoid valve is connected to the normally closed port of the third solenoid valve to form the second switching channel. The other end of the second intake channel is connected to a second quick-connect interface. The normally open end of the third solenoid valve is connected to one end of the third air intake channel, and the other end of the third air intake channel is connected to a third quick-connect interface. The common port of the third solenoid valve is connected to the common air outlet channel. The air path intake switching module includes: a first quick-connect connector, a second quick-connect connector, a third quick-connect connector, and a fourth quick-connect connector. The first quick-connect connector, the second quick-connect connector, and the third quick-connect connector are respectively disposed on the first quick-connect interface, the second quick-connect interface, and the third quick-connect interface. The fourth quick-connect connector is inserted into the fourth quick-connect interface disposed at the outlet end of the common air outlet channel.

2. The built-in integrated gas path switching device according to claim 1, wherein Both the air intake switching module and the air outlet switching module include a panel, and the two oppositely arranged panels form a housing, with the integrated air circuit disposed inside the housing.

3. The built-in integrated gas path switching device according to claim 2, wherein The two opposing panels have a groove on their side that is close to each other, and the groove can accommodate the integrated air passage; any one or both of the surfaces of the two opposing panels that are close to each other are provided with a positioning structure, which is used for positioning when the panels are docked.

4. The built-in integrated gas path switching device according to claim 3, wherein An external structure is provided on one or both of the surfaces of the two opposing panels that are facing away from each other. The external structure is used to connect the panel to an external device.

5. The built-in integrated gas path switching device according to claim 1, wherein A pressure relief port is connected between the first switching channel and the common air outlet channel, and between the second switching channel and the common air outlet channel.

6. A built-in integrated gas passage switching method for the built-in integrated gas passage switching device according to any one of claims 1 to 5, characterized by, The method includes: Obtain information on gas usage requirements; Based on the gas usage requirements, the appropriate gas path is selected for connection, specifically including: Select gas path one: Connect the first inlet channel, the first switching channel and the common outlet channel in sequence. The first inlet channel is connected to the gas source of No. 1 gas, and No. 1 gas is output at the outlet of the common outlet channel. Select gas path two: Connect the second inlet channel, the second switching channel and the common outlet channel in sequence. The second inlet channel is connected to the gas source of gas No. 2, and gas No. 2 is output at the outlet of the common outlet channel. Select gas path three: Connect the third air intake channel and the common air outlet channel. The third air intake channel is connected to the sampling gas, and the sampling gas is output through the outlet of the common air outlet channel.

7. The built-in integrated gas path switching method according to claim 6, wherein The method further includes: Depressurization is performed during the process of supplying gas No. 1 through the first switching channel or gas No. 2 through the second switching channel.

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