Valve island integrated multi-control valve fluid passage structure and control system thereof

Abstract

The utility model discloses a kind of valve island integrated multi-control valve fluid passage structure and its control system, fluid passage structure includes: valve island, control valve group connected on the valve island, and controlled execution unit of the control valve group;First check valve is further provided on the pipeline between the control valve group and the execution unit, the first check valve has the positive channel of the control valve and the execution unit, and the reverse channel of the intercommunication execution unit and external space is provided with.The gas flow of the exhaust hole synchronous opening of control valve group can be cut off to mis-trigger starting unit by setting first check valve and second check valve on the pipeline between control valve group and execution unit, guarantee equipment and system stable and reliable operation, first check valve and second check valve in starting unit exhaust process can keep enough opening, so that it is quickly exhausted and closed.

Description

Technical Field

[0001] This utility model relates to the field of electrical control system technology, and in particular to a valve island integrated multi-control valve fluid passage structure and its control system. Background Technology

[0002] Single-acting components (taking a single-acting cylinder as an example) typically work in conjunction with two-position three-way or four-position double three-way solenoid valves. The single-acting cylinder obtains its opening / closing power through the normally closed "one in, one out" working mode of the four-position double three-way solenoid valve. When the solenoid valve coil is energized, it provides a strong extension force to the cylinder; when the solenoid valve coil is de-energized, the cylinder's working chamber is connected to the valve island's exhaust port. As the cylinder loses its extension power, the internal spring rebounds and quickly expels the residual gas, returning the cylinder to its initial state.

[0003] Double-acting components (taking a double-acting cylinder as an example) are often used in conjunction with a two-position five-way solenoid valve. The two-position five-way solenoid valve can flexibly control the bidirectional movement of the cylinder, providing strong support for the complex actions of the equipment. When the cylinder executes the extension / retraction command, the working chamber obtains pneumatic power from the valve island inlet through the two-position five-way solenoid valve, while the residual gas in the non-working chamber is discharged into the valve island exhaust port.

[0004] In automated equipment applications, four-position double three-way solenoid valves and two-position five-way solenoid valves often share a single air source valve island base, with the air inlets and outlets of all solenoid valves interconnected. The commonly used air pressure for the valve island is 0.6 MPa. When the two-position five-way solenoid valves on the valve island simultaneously exhaust air, the instantaneous pressure at the outlet will surge. This instantaneous pressure exceeds the minimum opening pressure of the single-acting component controlled by the four-position double three-way solenoid valve. The increased pressure at the outlet acts like an uncontrolled air source, providing power to open the single-acting component through the four-position double three-way solenoid valve. This abnormal phenomenon may trigger the equipment's alarm mechanism and even lead to more serious operational risks. It can not only damage the equipment, causing malfunctions in critical components and deviations in process parameters, but also affect product quality and production efficiency, bringing significant uncertainty and potential risks to the manufacturing process. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a valve island integrated multi-control valve fluid passage structure and its control system to solve the technical problem of the risk of false triggering in the existing control valve control execution unit.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a valve island integrated multi-control valve fluid passage structure, which includes: a valve island, a control valve group connected to the valve island, and an execution unit controlled by the control valve group;

[0008] The pipeline between the control valve group and the execution unit is further provided with a first check valve. The first check valve has a forward channel that connects the control valve and the execution unit, and a reverse channel that connects the execution unit with the external space.

[0009] Wherein, the starting pressure value of the first one-way valve is not less than the sum pressure value when the exhaust ports of the control valve group start to exhaust synchronously.

[0010] The control valve group includes a two-position five-way valve and a four-position double three-way valve.

[0011] The valve island also has several empty slots for connecting control valves.

[0012] A second check valve is connected in series on the pipeline between the control valve group and the execution unit. The second check valve is used to isolate the airflow delivered from the exhaust port of the valve island to the execution unit.

[0013] The second check valve has a forward passage connecting the control valve group and the first check valve, and a reverse passage connecting the first check valve and the external space.

[0014] Secondly, embodiments of this utility model provide a control system, which includes the valve island integrated multi-control valve fluid passage structure as described in any of the above.

[0015] It also includes a gas source assembly and a gas distribution unit connected to the gas source assembly, with the output end of the gas distribution unit connected to the valve island.

[0016] The gas source component includes a gas source generator and a gas pipe connected to the output end of the gas source generator. The gas pipe is provided with a switch valve, a pressure regulating valve and a pressure gauge in sequence.

[0017] The control valve group is a solenoid valve group.

[0018] This utility model discloses a valve island integrated multi-control valve fluid passage structure and its control system. By setting a first check valve and a second check valve on the pipeline between the control valve group and the execution unit, it can isolate the airflow from the start-up unit when the exhaust port of the control valve group is opened synchronously, thus ensuring the stable and reliable operation of the equipment and system. At the same time, the first check valve and the second check valve connected in series can maintain sufficient opening during the exhaust process of the start-up unit, so that it can quickly exhaust and close.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the control system structure of the valve island integrated multi-control valve fluid passage structure according to an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] Control system 100, air source assembly 10, air source generator 11, switching valve 12, pressure regulating valve 13, pressure gauge 14, air distribution unit 20, valve island 30, empty position 31, control valve group 40, two-position five-way valve 41, four-position double three-way valve 42, second check valve 50, first check valve 60, and execution unit 70. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] In automated equipment applications, four-position double three-way solenoid valves and two-position five-way solenoid valves often share a single air source valve island base, with the air inlets and outlets of all solenoid valves interconnected. The commonly used air source pressure for the valve island is 0.6 MPa. When the two-position five-way solenoid valves on the valve island simultaneously exhaust air, the instantaneous pressure at the outlet increases sharply. This instantaneous pressure exceeds the minimum opening pressure of the single-acting component controlled by the four-position double three-way solenoid valve. The increased pressure at the outlet acts like an uncontrolled air source, providing power to open the single-acting component through the four-position double three-way solenoid valve. This abnormal phenomenon may trigger the equipment's alarm mechanism and even lead to more serious operational risks. It can not only damage the equipment and cause malfunctions in critical components and deviations in process parameters, but also affect product quality and production efficiency, bringing significant uncertainty and potential losses to the manufacturing process. To address these problems, this embodiment discloses a valve island integrated multi-control valve fluid passage structure.

[0031] Please see Figure 1 The valve island integrates a multi-control valve fluid passage structure, comprising: a valve island 30, a control valve assembly 40 connected to the valve island 30, and an execution unit 70 controlled by the control valve assembly 40; the control valve assembly 40 controls the supply of external air to the execution unit 70, causing the execution unit 70 to perform a movement action; the control valve assembly 40 is used as a control switch to control the opening and closing of the fluid passage. In this embodiment, the execution unit 70 is described using a cylinder as an example.

[0032] The fluid communication pipeline between the control valve assembly 40 and the execution unit 70 is further provided with a first check valve 60. The first check valve 60 has a forward channel connecting the control valve 40 and the execution unit 70, and a reverse channel connecting the execution unit 70 to the external space. Here, the external space refers to the environment of the equipment connected to the first check valve 60, relative to the internal fluid flow space of the fluid passage system. The control valve assembly 40 is used to control the on / off flow of gases or liquids.

[0033] During startup, the control valve group 40 opens the external power source input passage, driving the actuator 70 to move a first stroke in the first direction. When the actuator 70 stops, the control valve group 40 closes the air source fluid passage. At this time, the actuator 70 resets itself by moving in the opposite direction to the first direction using its internal elastic reset member. During this process, the fluid inside the actuator 70 is discharged out of the pipeline through the first exhaust pipe 60. During startup, the fluid output by the control valve group 40 is delivered to the actuator 70 through the forward channel of the first one-way valve 60. After the actuator 70 stops, the internal fluid is output to the outside through the reverse channel of the first one-way valve 60.

[0034] The starting pressure of the first one-way valve 60 is not less than the sum of the pressure values ​​when the exhaust ports of the control valve group 40 are simultaneously venting. As described in the background art, when multiple control valves integrated on the valve island 30 simultaneously open to vent, the pressure value of the exhaust channel of the valve island will increase sharply, causing the airflow to be transported to the execution unit 70 along the pipeline between the control valve group 40 and the execution unit 70, resulting in the abnormal start of the execution unit 70. If applied to precision system equipment, the execution action of the execution unit 70 will have a serious impact on the operation of the entire equipment, leading to system failure or equipment damage. To address the issue of false triggering of the actuator 70 caused by the simultaneous venting (or drainage) of multiple control valves integrated on the valve island 30, this embodiment adds a first check valve 60 to the pipeline between the control valve group 40 and the actuator 70. The square channel of the first check valve 60 is a one-way channel, and the opening pressure of the one-way channel is not less than the sum of the pressures generated when all control valves integrated on the valve island 30 vent simultaneously. Under this condition, the first check valve 60 can still be in the closed state, and the airflow in the venting channel of the valve island 30 will not flow into the actuator 70, thus preventing false triggering of the actuator 70.

[0035] In this embodiment, the control valve assembly 40 includes a two-position five-way valve 41 and a four-position double three-way valve 42. It is understood that in other embodiments, the control valve integrated on the valve island 30 can be any other type of valve body, depending on the type of actuator it controls.

[0036] Furthermore, the valve island 30 is also provided with several slots 31 for connecting control valves. Here, since a first check valve 60 is provided on the pipeline between the control valve group 40 and the execution unit 70, control valves can be added arbitrarily to the slots 31 on the valve island 30. In this case, it is necessary to test the total air pressure value generated when all the control valves integrated on the valve island 30 are opened and vented simultaneously, and then select the first check valve 60 whose opening air pressure value is not less than the total air pressure value mentioned above.

[0037] A valve island 30 is a device used in industrial automation control systems, typically composed of multiple electrically controlled valves. Its structure resembles an "island," integrating signal input / output and signal control functions. By controlling the flow and pressure of fluids (such as gases and liquids), the valve island can precisely regulate various parameters in the production process.

[0038] Please refer to it again. Figure 1A second check valve 50 is connected in series on the pipeline between the control valve assembly 40 and the execution unit 70. The second check valve 50 is used to isolate the airflow delivered from the exhaust port of the valve island 30 to the execution unit. The reason for using the first check valve 60 and the second check valve 50 in series to control the fluid passage from the control valve assembly 40 to the execution unit 70 is that, compared to a single design of the first check valve 60, it is more advantageous for the first check valve 60 to be at a larger opening, thereby improving the start-stop speed of the exhaust valve. During the process of the gas inside the execution unit 70 being discharged through the reverse channel of the first check valve 60, in order to avoid the airflow resistance delivered by the control valve assembly 40 affecting the opening of the reverse channel, the second check valve 50 can completely isolate the starting fluid (including gas and liquid) delivered by the control valve assembly 40. At this time, the opening of the reverse channel of the first check valve 60 is always kept at the maximum opening, that is, the fluid inside the execution unit 70 can be quickly discharged, thereby improving the start-stop speed of the first check valve 60.

[0039] Similarly, the second check valve 50 has a forward passage connecting the control valve group 40 and the first check valve 60, and a reverse passage connecting the first check valve 60 and the external space.

[0040] It should be noted that in the above embodiments, the valve island integrated multi-control valve fluid passage structure adopts a pneumatic method, and the corresponding control valve group 40 is a solenoid valve group. In other embodiments, the valve island integrated multi-control valve fluid passage structure can also adopt a liquid drive, and the corresponding execution unit 70 can be replaced by a hydraulic cylinder, etc., and the corresponding control valve group 40 is a liquid control valve.

[0041] Please refer to it again. Figure 1 This embodiment also discloses a control system 100, which includes the valve island integrated multi-control valve fluid passage structure as described above.

[0042] Specifically, the control system 100 also includes a gas source component 10 and a gas distribution unit 20 connected to the gas source component 10, the output end of the gas distribution unit 20 being connected to the valve island 30.

[0043] The gas source assembly 10 includes a gas source generator 11 and a gas pipe connected to the output end of the gas source generator. The gas pipe is provided with a switching valve 12, a pressure regulating valve 13 and a pressure gauge 14 in sequence.

[0044] An embodiment of this utility model also provides a method for preventing accidental triggering of multiple control valves integrated in a valve island. This method is executed by the control system 100 and includes the following steps:

[0045] A first check valve 60 and a second check valve 50 are installed on the pipeline between the control valve group 40 and the execution unit 70. The first check valve 60 and the second check valve 50 are connected in series. The control valve group 40 is integrated into the valve island 30. Both the first check valve 60 and the second check valve 50 have a forward channel and a reverse channel.

[0046] Finally, it should be noted that in the above embodiments, the control system 100 adopts a pneumatic method, and the corresponding control valve group 40 is a solenoid valve group. In other embodiments, the control system can also adopt a liquid drive, and the corresponding execution unit 70 can be replaced by a hydraulic cylinder, etc., and the corresponding control valve group 40 is a hydraulic valve.

[0047] The valve island integrated multi-control valve fluid passage structure and its control system in this embodiment can isolate the airflow from the start-up unit when the exhaust port of the control valve group is opened synchronously, thus ensuring the stable and reliable operation of the equipment and system. At the same time, the first and second check valves connected in series can maintain sufficient opening during the exhaust process of the start-up unit, so as to enable it to exhaust and close quickly.

[0048] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A valve skid integrated multi-control valve fluid passage structure, characterized by, include: A valve island, a control valve assembly connected to the valve island, and an execution unit controlled by the control valve assembly; The pipeline between the control valve group and the execution unit is further provided with a first check valve. The first check valve has a forward channel that connects the control valve and the execution unit, and a reverse channel that connects the execution unit with the external space.

2. The valve skid integrated multi-control valve fluid passage structure according to claim 1, characterized by, The starting pressure of the first check valve is not less than the total pressure when the exhaust ports of the control valve group start to exhaust synchronously.

3. The valve skid integrated multi-control valve fluid passage structure according to claim 2, characterized by, The control valve assembly includes: a two-position five-way valve and a four-position double three-way valve.

4. The valve skid integrated multi-control valve fluid passage structure according to claim 3, characterized by, The valve island also has several slots for connecting control valves.

5. The valve skid integrated multi-control valve fluid passage structure according to any one of claims 1 to 4, characterized by, A second check valve is connected in series on the pipeline between the control valve group and the execution unit. The second check valve is used to isolate the airflow delivered from the exhaust port of the valve island to the execution unit.

6. The valve skid integrated multi-control valve fluid passage structure according to claim 5, characterized by, The second check valve has a forward passage connecting the control valve assembly to the first check valve and a reverse passage connecting the first check valve to the external space.

7. A control system characterized by, The control system includes a valve island integrated multi-control valve fluid passage structure as described in any one of claims 1 to 6.

8. The control system of claim 7, wherein, It also includes a gas source assembly and a gas distribution unit connected to the gas source assembly, the output end of which is connected to the valve island.

9. The control system of claim 8, wherein, The gas source assembly includes: a gas source generator and a gas pipe connected to the output end of the gas source generator. The gas pipe is provided with a switching valve, a pressure regulating valve and a pressure gauge in sequence.

10. The control system according to claim 9, characterized in that, The control valve assembly is a solenoid valve assembly.

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