Valve control system with double acting actuator

Abstract

The utility model relates to valve technical field especially relates to a valve control system of double -acting execution element, it includes first power medium flow pipeline and two -way control branch system, two -way control branch system is connected with first power medium flow pipeline respectively, through being provided with manual tee L type ball valve and third power medium flow pipeline in control branch system, second power medium flow pipeline includes first tub and second tub, one end of first tub is connected with solenoid valve's second interface, the other end of first tub is connected with ball valve first interface, one end of second tub is connected with ball valve third interface, one end of third power medium flow pipeline is connected with first power medium flow pipeline, the other end of third power medium flow pipeline is connected with ball valve second interface. The valve control system can use under the electrification and power loss state, can control single -acting execution element to open the valve, and the use of valve is convenient.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve control system with a double-acting actuator. Background Technology

[0002] To facilitate opening and closing valves, a common method is to use an actuator. The actuator mainly consists of a double-acting element and a valve control system that controls the movement of the double-acting element. Currently, the double-acting element is either a pneumatic cylinder or a hydraulic cylinder. The valve control system for the double-acting element includes a first power medium flow pipeline and two identical control branch systems. Each control branch system is connected to the first power medium flow pipeline. Each control branch system includes a solenoid valve, a second power medium flow pipeline, and a fifth power medium flow pipeline. One end of the first power medium flow pipeline is the power medium supply connection end. One end of the fifth power medium flow pipeline is connected to the first power medium flow pipeline, and the other end is connected to the first interface of the solenoid valve. One end of the second power medium flow pipeline is connected to the second interface of the solenoid valve, and the other end is the actuator connection end. The power medium supply connection end is connected to the power medium supply device, and the actuator connection end is connected to the double-acting element. The power medium can be gas or hydraulic oil. The power medium supply device includes the power medium and a corresponding delivery pump. One control branch system controls the double-acting actuator to open the valve, while the other control branch system controls the double-acting actuator to close the valve. The working principle of this double-acting actuator valve control system is as follows: After the solenoid valve is energized, its first and second ports are connected. The power medium from the power medium supply device sequentially flows through the first power medium flow pipe, the fifth power medium flow pipe, the solenoid valve, and the second power medium flow pipe into the double-acting actuator, causing the actuator to open or close the valve.

[0003] Because solenoid valves require energization to function, the entire double-acting actuator valve control system must also be energized to control the double-acting actuator to open or close the valve. It cannot be used when de-energized, thus affecting the valve's operation. Utility Model Content

[0004] The technical problem solved by this invention is to provide a valve control system with a double-acting actuator that can be used in the event of power failure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a valve control system with a double-acting actuator, including a first power medium flow pipeline and two control branch systems, the two control branch systems being connected to the first power medium flow pipeline respectively;

[0006] The control branch system includes a solenoid valve, a second power medium flow pipe, and a fifth power medium flow pipe. One end of the first power medium flow pipe is the power medium supply connection end. One end of the fifth power medium flow pipe is connected to the first power medium flow pipe, and the other end of the fifth power medium flow pipe is connected to the first interface of the solenoid valve. One end of the second power medium flow pipe is connected to the second interface of the solenoid valve, and the other end of the second power medium flow pipe is the actuator connection end. The control branch system also includes a manual three-way L-type ball valve and a third power medium flow pipe. The manual three-way L-type ball valve includes a first ball valve interface, a second ball valve interface, and a third ball valve interface. The center lines of the first ball valve interface and the second ball valve interface are on the same straight line, and the center line of the third ball valve interface is perpendicular to the center line of the first ball valve interface.

[0007] The second power medium flow pipeline includes a first pipe body and a second pipe body. One end of the first pipe body is connected to the second interface of the solenoid valve, and the other end of the first pipe body is connected to the first interface of the ball valve. One end of the second pipe body is connected to the third interface of the ball valve, and the other end of the second pipe body is the actuator connection end. One end of the third power medium flow pipeline is connected to the first power medium flow pipeline, and the other end of the third power medium flow pipeline is connected to the second interface of the ball valve.

[0008] Furthermore, the solenoid valve is a two-position three-way solenoid valve.

[0009] Furthermore, the second pipe body includes a first pipe section and a second pipe section, and also includes a first power medium control valve and a fourth power medium flow pipe.

[0010] One end of the first pipe is connected to the third interface of the ball valve, and the other end of the first pipe is connected to the first interface of the first power medium control valve. One end of the fourth power medium flow pipe is connected to the first power medium flow pipe, and the other end of the fourth power medium flow pipe is connected to the second interface of the first power medium control valve. One end of the second pipe is connected to the third interface of the first power medium control valve, and the other end of the second pipe is the connection end of the single-acting actuator.

[0011] Furthermore, the first power medium control valve is either a pneumatic control valve or a hydraulic control valve.

[0012] Furthermore, the first pipe body includes a third pipe section and a fourth pipe section, as well as a second power medium control valve and a second power medium flow pipeline;

[0013] One end of the third pipe is connected to the second interface of the solenoid valve, and the other end of the third pipe is connected to the first interface of the second power medium control valve. One end of the second power medium flow pipe is connected to the first power medium flow pipe, and the other end of the second power medium flow pipe is connected to the second interface of the second power medium control valve. One end of the fourth pipe is connected to the third interface of the second power medium control valve, and the other end of the fourth pipe is connected to the first interface of the ball valve.

[0014] Furthermore, the second power medium control valve is either a pneumatic control valve or a hydraulic control valve.

[0015] Furthermore, a filter pressure reducing valve is installed on the first power medium flow pipeline.

[0016] Furthermore, a safety valve is installed on the first power medium flow pipeline, and the safety valve is located behind the filter pressure reducing valve along the power medium flow direction.

[0017] The beneficial effects of this utility model are as follows: The control branch system is equipped with a manual three-way L-type ball valve and a third power medium flow pipeline. The second power medium flow pipeline includes a first pipe body and a second pipe body. One end of the first pipe body is connected to the second interface of the solenoid valve, and the other end of the first pipe body is connected to the first interface of the ball valve. One end of the second pipe body is connected to the third interface of the ball valve, and the other end of the second pipe body is the connection end of the actuator. One end of the third power medium flow pipeline is connected to the first power medium flow pipeline, and the other end of the third power medium flow pipeline is connected to the second interface of the ball valve. The working principle of this double-acting actuator valve control system is as follows: When the solenoid valve is energized, its first and second ports are connected. Manually turning the handle connects the first and third ports of the ball valve. The power medium flows sequentially through the first and fifth power medium flow pipes, the solenoid valve, the first pipe body, the manual three-way L-type ball valve (ball valve first and third ports), and the second pipe body into the double-acting actuator, causing it to open the valve. When the solenoid valve is de-energized, it cannot operate. Manually turning the handle connects the second and third ports of the ball valve. The power medium flows sequentially through the first and third power medium flow pipes, the manual three-way L-type ball valve (ball valve second and third ports), and the second pipe body into the double-acting actuator, causing it to open or close the valve. Therefore, this double-acting actuator valve control system can be used in both energized and de-energized states, controlling the double-acting actuator to open or close the valve, thus facilitating valve operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the valve control system of the first type of double-acting actuator of this utility model;

[0019] Figure 2 This is a schematic diagram of an embodiment of the valve control system of the second type of double-acting actuator of this utility model;

[0020] Figure 3 This is a schematic diagram of an embodiment of the valve control system of the third type of double-acting actuator of this utility model;

[0021] The following are labeled as follows: First power medium flow pipeline 1, solenoid valve 2, Second power medium flow pipeline 3, manual three-way L-type ball valve 4, Third power medium flow pipeline 5, First pipe body 6, Second pipe body 7, First pipe section 8, Second pipe section 9, First power medium control valve 10, Fourth power medium flow pipeline 11, Filter pressure reducing valve 12, Safety valve 13, Double-acting actuator 14, Third pipe section 15, Fourth pipe section 16, Second power medium control valve 17, Fifth power medium flow pipeline 18. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, the valve control system of the dual-acting actuator of this utility model includes a first power medium flow pipeline 1 and two control branch systems, which are respectively connected to the first power medium flow pipeline 1.

[0024] The control branch system includes a solenoid valve 2, a second power medium flow pipe and a fifth power medium flow pipe 18. One end of the first power medium flow pipe 1 is the power medium supply connection end. One end of the fifth power medium flow pipe 18 is connected to the first power medium flow pipe 1, and the other end of the fifth power medium flow pipe 18 is connected to the first interface of the solenoid valve 2. The first interface of the solenoid valve 2 is the power medium inflow interface. One end of the second power medium flow pipe is connected to the second interface of the solenoid valve 2. The second interface of the solenoid valve 2 is the power medium outflow interface, and the other end of the second power medium flow pipe is the actuator connection end. The control branch system also includes a manual three-way L-type ball valve 4 and a third power medium flow pipe 5. The manual three-way L-type ball valve 4 includes a ball valve first interface, a ball valve second interface and a ball valve third interface. The center lines of the ball valve first interface and the ball valve second interface are on the same straight line, and the center line of the ball valve third interface is perpendicular to the center line of the ball valve first interface.

[0025] The second power medium flow pipeline includes a first pipe body 6 and a second pipe body 7. One end of the first pipe body 6 is connected to the second interface of the solenoid valve 2, and the other end of the first pipe body 6 is connected to the first interface of the ball valve. One end of the second pipe body 7 is connected to the third interface of the ball valve, and the other end of the second pipe body 7 is the actuator connection end. One end of the third power medium flow pipeline 5 is connected to the first power medium flow pipeline 1, and the other end of the third power medium flow pipeline 5 is connected to the second interface of the ball valve.

[0026] The manual three-way L-type ball valve 4 can only connect two orthogonal ports. It cannot simultaneously maintain the connection of a third port. That is, the first and third ports of the ball valve can be connected, as can the second and third ports. However, the first and second ports cannot be connected to each other, nor can the first, second, and third ports be connected simultaneously. The manual three-way L-type ball valve 4 has two operating states: one where the first and third ports are connected, and another where manually turning the handle connects the second and third ports.

[0027] The power medium supply connection end is connected to the power medium supply device, and the actuator connection end is connected to the double-acting actuator 14. The double-acting actuator is a cylinder or a hydraulic cylinder, and the power medium is the corresponding gas or hydraulic oil. The two control branch systems are completely identical. One control branch system controls the double-acting actuator to open the valve, and the other control branch system controls the double-acting actuator to close the valve. The working principle of the valve control system of the double-acting actuator is as follows: When the solenoid valve 2 is energized, the first port and the second port of the solenoid valve 2 are connected. The handle is manually turned to connect the first port and the third port of the ball valve. The power medium flows sequentially through the first power medium flow pipe 1, the fifth power medium flow pipe 18, the solenoid valve 2, the first pipe body 6, the manual three-way L-type ball valve 4 (the first port and the third port of the ball valve), and the second pipe body 7 into the double-acting actuator 14, causing the double-acting actuator 14 to open or close the valve. When the solenoid valve 2 is de-energized, the solenoid valve 2 cannot work. The handle is manually turned to connect the second port and the third port of the ball valve. The power medium flows sequentially through the first power medium flow pipe 1, the third power medium flow pipe 5, the manual three-way L-type ball valve 4 (the second port and the third port of the ball valve), and the second pipe body 7 into the double-acting actuator 14, causing the double-acting actuator 14 to open or close the valve.

[0028] Specifically, for valves with large diameters and pressure ratings, it is sometimes necessary to install a power-controlled valve in the pipeline to increase the flow area. This power-controlled valve is either a pneumatic or hydraulic valve. It can be installed on the first pipe body 6 or the second pipe body 7. To ensure that the power-controlled valve can be used under both energized and de-energized conditions, when installed on the second pipe body 7, such as... Figure 2As shown, the second pipe body 7 includes a first pipe section 8 and a second pipe section 9, and also includes a first power medium control valve 10 and a fourth power medium flow pipe 11; one end of the first pipe section 8 is connected to the third interface of the ball valve, and the other end of the first pipe section 8 is connected to the first interface of the first power medium control valve 10; one end of the fourth power medium flow pipe 11 is connected to the first power medium flow pipe 1, and the other end of the fourth power medium flow pipe 11 is connected to the second interface of the first power medium control valve 10; one end of the second pipe section 9 is connected to the third interface of the first power medium control valve 10, and the other end of the second pipe section 9 is a single-acting actuator connection end. At this time, the first power medium control valve 10 is either a pneumatic or hydraulic control valve, selected according to the power medium. The function of the solenoid valve 2 is to control whether the first power medium control valve 10 is connected. The first power medium control valve 10 is a normally closed valve. When no power medium is introduced into the first port of the first power medium control valve 10, the first power medium control valve 10 is in a normally closed state, and the second port and the third port of the first power medium control valve 10 are not connected. When power medium is introduced into the first port of the first power medium control valve 10, the power medium causes the valve core of the first power medium control valve 10 to move, so that the first power medium control valve 10 is in an open state, and the second port and the third port of the first power medium control valve 10 are connected.The working principle of the valve control system of the double-acting actuator at this time is as follows: When the solenoid valve 2 is energized, the first port and the second port of the solenoid valve 2 are connected. The handle is manually turned to connect the first port and the third port of the ball valve. First, the power medium enters the first power medium control valve 10 through the first power medium flow pipe 1, the fifth power medium flow pipe 18, the solenoid valve 2, the first pipe body 6, the manual three-way L-type ball valve 4 (the first port and the third port of the ball valve), and the first pipe section 8. The power medium causes the valve core of the first power medium control valve 10 to move, and the second port and the third port of the first power medium control valve 10 are connected, so that the first power medium control valve 10 is in the open state. Then, the power medium enters the double-acting actuator through the first power medium flow pipe 1, the fourth power medium flow pipe 11, the first power medium control valve 10, and the second pipe section 9. In component 14, the double-acting actuator 14 is activated to open or close the valve. When the solenoid valve 2 is de-energized, it cannot operate. The handle is manually turned to connect the second and third ports of the ball valve. First, the power medium flows sequentially through the first power medium flow pipe 1, the third power medium flow pipe 5, the manual three-way L-type ball valve 4 (the second and third ports of the ball valve), and the first pipe section 8 into the first power medium control valve 10. The power medium causes the valve core of the first power medium control valve 10 to move, and the second and third ports of the first power medium control valve 10 are connected, putting the first power medium control valve 10 in the open state. Then, the power medium flows sequentially through the first power medium flow pipe 1, the fourth power medium flow pipe 11, the first power medium control valve 10, and the second pipe section 9 into the double-acting actuator 14, causing the double-acting actuator 14 to open or close the valve.

[0029] When the power medium control valve is installed on the first pipe body 6, such as Figure 3As shown, the first pipe body 6 includes a third pipe section 15 and a fourth pipe section 16, and also includes a second power medium control valve 17 and a second power medium flow pipe 3; one end of the third pipe section 15 is connected to the second interface of the solenoid valve 2, and the other end of the third pipe section 15 is connected to the first interface of the second power medium control valve 17; one end of the second power medium flow pipe 3 is connected to the first power medium flow pipe 1, and the other end of the second power medium flow pipe 3 is connected to the second interface of the second power medium control valve 17; one end of the fourth pipe section 16 is connected to the third interface of the second power medium control valve 17, and the other end of the fourth pipe section 16 is connected to the first interface of the ball valve. At this time, the second power medium control valve 17 is either a pneumatic or hydraulic control valve, selected according to the power medium. The function of the solenoid valve 2 is to control whether the second power medium control valve 17 is connected. The second power medium control valve 17 is a normally closed valve. When no power medium is introduced into the first port of the second power medium control valve 17, the second power medium control valve 17 is in a normally closed state, and the second port and the third port of the second power medium control valve 17 are not connected. When power medium is introduced into the first port of the second power medium control valve 17, the power medium causes the valve core of the first power medium control valve 10 to move, causing the second power medium control valve 17 to be in an open state, and the second port and the third port of the second power medium control valve 17 are connected. The working principle of the valve control system with double-acting actuators at this time is as follows: When solenoid valve 2 is energized, the first and second ports of solenoid valve 2 are connected. Manually turning the handle connects the first and third ports of the ball valve. The power medium first flows sequentially through the first power medium flow pipe 1, the fifth power medium flow pipe 18, solenoid valve 2, the third pipe section 15, and enters the second power medium control valve 17. The power medium causes the valve core of the first power medium control valve 10 to move. The second and third ports of the second power medium control valve 17 are connected, putting the second power medium control valve 17 in the open state. Then, the power medium flows sequentially through the first power medium flow pipe... Pipeline 1, second power medium flow pipeline 3, second power medium control valve 17, fourth pipe section 16, manual three-way L-type ball valve 4 (ball valve first port and ball valve third port), and second pipe body 7 enter the double-acting actuator 14, causing the double-acting actuator 14 to open or close the valve; when the solenoid valve 2 is de-energized, the solenoid valve 2 cannot work, and the handle is manually turned to connect the ball valve second port and ball valve third port, and the power medium sequentially enters the double-acting actuator 14 through the first power medium flow pipeline 1, the third power medium flow pipeline 5, manual three-way L-type ball valve 4 (ball valve second port and ball valve third port), and second pipe body 7, causing the double-acting actuator 14 to open or close the valve.

[0030] To improve the safety of the entire double-acting valve control system, for example... Figure 1 , Figure 2 and Figure 3 As shown, a filter pressure reducing valve 12 and a safety valve 13 are installed on the first power medium flow pipeline 1. Along the power medium flow direction, the safety valve 13 is located behind the filter pressure reducing valve 12.

[0031] In summary, the valve control system of the double-acting actuator of this utility model can be used in both energized and de-energized states, and can control the double-acting actuator 14 to open or close the valve, thus facilitating the use of the valve.

Claims

1. A valve control system with a double-acting actuator, comprising a first power medium flow pipeline (1) and two control branch systems, wherein the two control branch systems are respectively connected to the first power medium flow pipeline (1); The control branch system includes a solenoid valve (2), a second power medium flow pipe, and a fifth power medium flow pipe (18). One end of the first power medium flow pipe (1) is a power medium supply connection end. One end of the fifth power medium flow pipe (18) is connected to the first power medium flow pipe (1), and the other end of the fifth power medium flow pipe (18) is connected to the first interface of the solenoid valve (2). One end of the second power medium flow pipe is connected to the second interface of the solenoid valve (2), and the other end of the second power medium flow pipe is an actuator connection end. Its characteristics are: The control branch system also includes a manual three-way L-type ball valve (4) and a third power medium flow pipeline (5). The manual three-way L-type ball valve (4) includes a ball valve first interface, a ball valve second interface, and a ball valve third interface. The center lines of the ball valve first interface and the ball valve second interface are on the same straight line, and the center line of the ball valve third interface is perpendicular to the center line of the ball valve first interface. The second power medium flow pipeline includes a first pipe body (6) and a second pipe body (7). One end of the first pipe body (6) is connected to the second interface of the solenoid valve (2), and the other end of the first pipe body (6) is connected to the first interface of the ball valve. One end of the second pipe body (7) is connected to the third interface of the ball valve, and the other end of the second pipe body (7) is the connection end of the actuator. One end of the third power medium flow pipeline (5) is connected to the first power medium flow pipeline (1), and the other end of the third power medium flow pipeline (5) is connected to the second interface of the ball valve.

2. The valve control system with a double-acting actuator as described in claim 1, characterized in that: Solenoid valve (2) is a two-position three-way solenoid valve.

3. The valve control system with a double-acting actuator as described in claim 1, characterized in that: The second pipe body (7) includes a first pipe section (8) and a second pipe section (9), and also includes a first power medium control valve (10) and a fourth power medium flow pipe (11). One end of the first pipe section (8) is connected to the third interface of the ball valve, and the other end of the first pipe section (8) is connected to the first interface of the first power medium control valve (10). One end of the fourth power medium flow pipe (11) is connected to the first power medium flow pipe (1), and the other end of the fourth power medium flow pipe (11) is connected to the second interface of the first power medium control valve (10). One end of the second pipe section (9) is connected to the third interface of the first power medium control valve (10), and the other end of the second pipe section (9) is the connection end of the single-acting actuator.

4. The valve control system with a double-acting actuator as described in claim 3, characterized in that: The first power medium control valve (10) is a pneumatic control valve or a hydraulic control valve.

5. The valve control system with a double-acting actuator as described in claim 1, characterized in that: The first pipe body (6) includes a third pipe section (15) and a fourth pipe section (16), and also includes a second power medium control valve (17) and a second power medium flow pipe (3). One end of the third pipe section (15) is connected to the second interface of the solenoid valve (2), and the other end of the third pipe section (15) is connected to the first interface of the second power medium control valve (17). One end of the second power medium flow pipe (3) is connected to the first power medium flow pipe (1), and the other end of the second power medium flow pipe (3) is connected to the second interface of the second power medium control valve (17). One end of the fourth pipe section (16) is connected to the third interface of the second power medium control valve (17), and the other end of the fourth pipe section (16) is connected to the first interface of the ball valve.

6. The valve control system with a double-acting actuator as described in claim 5, characterized in that: The second power medium control valve (17) is a pneumatic control valve or a hydraulic control valve.

7. The valve control system with a double-acting actuator as described in any one of claims 1 to 6, characterized in that: A filter pressure reducing valve (12) is installed on the first power medium flow pipeline (1).

8. The valve control system with a double-acting actuator as described in claim 7, characterized in that: A safety valve (13) is installed on the first power medium flow pipeline (1). Along the power medium flow direction, the safety valve (13) is located behind the filter pressure reducing valve (12).

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