Nuclear power multi-cylinder pneumatic stop valve control system

Abstract

The utility model relates to a nuclear power multi-cylinder pneumatic stop valve control system which can control a quick discharge valve to adjust the position through an electromagnetic valve, the quick discharge valve can correspondingly guide an air source into different positions of a valve cylinder after the position is adjusted, and the corresponding position of the valve cylinder is quickly emptied through the quick discharge valve. Therefore, compared with a control system in the related technology, the valve cylinder can be controlled only through the electromagnetic valve and the quick discharge valve, the whole structure is very simple, the cost is reduced, and the operation convenience is improved; meanwhile, due to the fact that control parts are reduced, the failure rate is reduced, the overhaul difficulty is lowered, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power, in particular to a nuclear power multi-cylinder pneumatic stop valve control system. Background Art

[0002] In nuclear power plants, pneumatic stop valves are one of the important safety devices. In the event of an accident, they need to quickly and reliably cut off key pipelines to protect important equipment such as condensate pumps or steam turbines. Figure 1 As shown, Figure 1 The existing pneumatic stop valve control system has the following problems:

[0003] First, in order to ensure reliability under various extreme conditions, the existing control system adopts complex logic and redundant design, such as Figure 1 As shown, a large number of components of various types are arranged between the one-way valve 19 and the cylinder 12, resulting in very poor operation convenience. Secondly, the control system includes various types of sensors, actuators and other auxiliary equipment, which increases the complexity of the system and leads to a high failure rate of the system.

[0004] Furthermore, complex control mechanisms will make maintenance and overhaul very difficult and time-consuming, requiring specialized technicians to perform regular inspections and maintenance; and complex systems will also lead to high application costs and subsequent maintenance costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a nuclear power multi-cylinder pneumatic stop valve control system, which can solve the problems of poor operation convenience, high failure rate, great difficulty in overhaul and maintenance, and high popular maintenance cost.

[0006] The utility model provides a nuclear power multi-cylinder pneumatic stop valve control system, which is connected to the gas source and the valve cylinder respectively. The nuclear power multi-cylinder pneumatic stop valve control system includes:

[0007] A control device, the control device comprising at least one solenoid valve, the solenoid valve having a gas inlet and a gas outlet, the gas inlet being connected to the gas source; and

[0008] A quick exhaust device, the quick exhaust device comprising at least one quick exhaust valve, the quick exhaust valve having a control air port, a first communication circuit and a second communication circuit, the control air port being connected to the solenoid valve, the first communication circuit and the second communication circuit being both connected to the air source, and the first communication circuit and the second communication circuit being respectively connected to two ends of the valve cylinder;

[0009] Among them, the solenoid valve is used to control the connection between the air inlet and the air outlet, and switches the position of the quick exhaust valve by opening or cutting off the connection between the air source and the control air port, and then inflates or empties the two ends of the valve cylinder respectively through the first connecting circuit and the second connecting circuit.

[0010] Preferably, the control device comprises two solenoid valves, one of which is connected to the gas source via the gas inlet, and the other solenoid valve is connected to the control gas port via the gas outlet;

[0011] The remaining gas inlet is communicated with the remaining gas outlet, thereby communicating with the two solenoid valves.

[0012] Preferably, each of the solenoid valves has a discharge port;

[0013] When the solenoid valve is activated, the gas inlet can be connected to the gas outlet and the exhaust port can be cut off, or the gas outlet can be connected to the exhaust port for evacuation and the gas inlet can be cut off.

[0014] Preferably, the valve cylinder includes a cylinder body, a piston rod, two piston heads and a reset member, the cylinder body is provided with two active chambers, the piston rod is slidably arranged in the cylinder body, the two piston heads are respectively arranged at both ends of the piston rod, one of the active chambers is divided into a first piston chamber and a second piston chamber by the piston head, the other active chamber is divided into a third piston chamber and a fourth piston chamber by the piston head, the reset member is arranged in the fourth piston chamber, and the reset member is drivingly connected to the piston head.

[0015] Preferably, the quick exhaust device comprises two quick exhaust valves, the two quick exhaust valves comprise a first quick exhaust valve and a second quick exhaust valve, the first quick exhaust valve is provided with the control air port, the first communication circuit and the second communication circuit, the second quick exhaust valve is provided with the control air port, the first communication circuit and the second communication circuit;

[0016] Each of the first communication loops includes a first interface, a second interface and a third interface, and each of the second communication loops includes a fourth interface, a fifth interface and a sixth interface;

[0017] On the first quick exhaust valve, the control air port is connected to the solenoid valve, the first interface is used for air supply and exhaust, the second interface is connected to the second piston chamber, the third interface is connected to the air source, the fourth interface is used for air supply and exhaust, the fifth interface is connected to the control air port of the second quick exhaust valve, and the sixth interface is connected to the air source, wherein, when the control air port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control air port is exhausted and depressurized, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface;

[0018] On the second quick exhaust valve, the first interface is connected to the gas source, the second interface is connected to the first piston chamber, the third interface and the fourth interface are both used for air supply and exhaust, the fifth interface is connected to the third piston chamber, and the sixth interface is connected to the gas source, wherein, when the control gas port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control gas port is used to exhaust and release pressure, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface.

[0019] Preferably, the quick exhaust device comprises a quick exhaust valve, a first flow amplifier and a second flow amplifier, wherein the first flow amplifier and the second flow amplifier both have a flow control port, a flow inlet, a flow outlet and a flow discharge port;

[0020] The first communication circuit includes a first interface, a second interface and a third interface, the second communication circuit includes a fourth interface, a fifth interface and a sixth interface, the first interface and the fourth interface are both connected to the gas source, the third interface and the sixth interface are both used for air supply and exhaust, when the control gas port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control gas port is exhausted and depressurized, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface;

[0021] When the flow control port introduces gas, the flow inlet is connected to the flow outlet, and the flow discharge port is cut off; when the flow control port is exhausted and pressure is released, the flow inlet is cut off, and the flow outlet is connected to the flow discharge port;

[0022] On the first flow amplifier, the flow control port is connected to the second interface, the flow inlet is connected to the gas source, and the flow outlet is connected to the first piston chamber and the third piston chamber respectively, wherein when the flow control port introduces gas, the flow inlet is connected to the flow outlet, and the flow discharge port is cut off; when the flow control port is exhausted and pressure is released, the flow inlet is cut off, and the flow outlet is connected to the flow discharge port;

[0023] On the second flow amplifier, the flow control port is connected to the fifth interface, the flow inlet is connected to the gas source, and the flow outlet is connected to the second piston chamber, wherein when the flow control port introduces gas, the flow inlet is connected to the flow outlet, and the flow discharge port is cut off; when the flow control port is used to exhaust and release air, the flow inlet is cut off, and the flow outlet is connected to the flow discharge port.

[0024] Preferably, the nuclear power multi-cylinder pneumatic stop valve control system also includes an introduction device, one end of the introduction device is connected to the gas source, and the other end of the introduction device is respectively connected to the control device and the quick exhaust device.

[0025] Preferably, the introduction device includes a one-way valve and a four-way joint, the four-way joint is connected to the gas source through the one-way valve, and the four-way joint is also connected to the control device and the quick exhaust device respectively, and the one-way valve supplies gas from the gas source to the four-way joint.

[0026] Preferably, the introduction device further comprises a filter pressure reducing valve, one end of the filter pressure reducing valve is connected to the gas source, and the other end of the filter pressure reducing valve is connected to the four-way joint through the one-way valve.

[0027] Preferably, two opposite ends of the solenoid valve are each provided with a coil, and the solenoid valve can be actuated when the coil is energized to control the connection or disconnection between the gas inlet and the gas outlet.

[0028] The implementation of this utility model has the following beneficial effects:

[0029] The utility model relates to a nuclear power multi-cylinder pneumatic stop valve control system, which can control the quick exhaust valve to adjust the position through the solenoid valve. After the position adjustment, the quick exhaust valve can introduce the gas source into different positions of the valve cylinder, and quickly empty the corresponding position of the valve cylinder through the quick exhaust valve. In this way, compared with the control system in the related art, the utility model only needs the solenoid valve and the quick exhaust valve to realize the control of the valve cylinder. The overall structure is very simple, which reduces the cost and improves the convenience of operation.

[0030] At the same time, due to the reduction of control components, the failure rate is reduced, the difficulty of maintenance is reduced, and the maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0032] Figure 1 It is a structural schematic diagram of a pneumatic stop valve control system in the prior art;

[0033] Figure 2 It is a schematic diagram of the structure of a nuclear power multi-cylinder pneumatic stop valve control system in some embodiments of the utility model;

[0034] Figure 3 It is a structural schematic diagram of a nuclear power multi-cylinder pneumatic stop valve control system in other embodiments of the utility model. DETAILED DESCRIPTION

[0035] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0036] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Figure 2 and Figure 3 The nuclear power multi-cylinder pneumatic stop valve control system 30 in some embodiments of the utility model is shown, and the nuclear power multi-cylinder pneumatic stop valve control system 30 is respectively connected to the gas source 40 and the valve cylinder 50. The nuclear power multi-cylinder pneumatic stop valve control system 30 is used to supply the gas source 40 to different positions of the valve cylinder 50, so that the valve cylinder 50 can move in a predetermined direction, and then drive the valve activity outside the system through the valve cylinder 50, so that the valve can perform the required valve operation.

[0040] like Figure 2 and Figure 3 As shown, the nuclear power multi-cylinder pneumatic stop valve control system 30 includes a control device 31 and a quick exhaust device 32, the control device 31 is connected to the quick exhaust device 32, and the control device 31 and the quick exhaust device 32 are both connected to the gas source 40. It can be understood that the control device 31 is used to control the position of the quick exhaust device 32, so that the quick exhaust device 32 can connect the gas source 40 with different positions of the valve cylinder 50, and empty the corresponding position of the valve cylinder 50, so that the valve cylinder 50 can move in a predetermined direction.

[0041] The control device 31 includes at least one solenoid valve 311 . The solenoid valve 311 has a gas inlet 3111 and a gas outlet 3112 . The gas inlet 3111 is connected to the gas source 40 .

[0042] It can be understood that the air inlet 3111 is connected to the air source 40 to receive compressed air or other air source media. The solenoid valve 311 controls the on-off between the air inlet 3111 and the air outlet 3112 to achieve the conduction or cut-off of the air flow.

[0043] like Figure 2 and Figure 3 As shown, the quick exhaust device 32 includes at least one quick exhaust valve 321, the quick exhaust valve 321 has a control air port 323, a first connecting circuit 324 and a second connecting circuit 325, the control air port 323 is connected to the solenoid valve 311, the first connecting circuit 324 and the second connecting circuit 325 are both connected to the air source 40, and the first connecting circuit 324 and the second connecting circuit 325 are respectively connected to the two ends of the valve cylinder 50.

[0044] It can be understood that the quick exhaust valve 321 can switch positions under the control of the solenoid valve 311, thereby controlling the on-off connection between the gas source 40 and the two ends of the valve cylinder 50, and realizing the inflation or evacuation of the valve cylinder 50. The solenoid valve 311 is used to control the on-off connection between the gas inlet 3111 and the gas outlet 3112, and the position of the quick exhaust valve 321 is switched by opening or cutting off the connection between the gas source 40 and the control gas port 323, and then the two ends of the valve cylinder 50 are inflated or evacuated respectively through the first communication circuit 324 and the second communication circuit 325.

[0045] It should be noted that the electromagnetic valve 311 controls whether the gas source 40 is connected to the control gas port 323, thereby adjusting the position of the quick exhaust valve 321. Specifically, when the airflow controlled by the electromagnetic valve 311 is introduced into the control gas port 323, the position of the quick exhaust valve 321 changes, thereby adjusting the working state of the first communication circuit 324 and the second communication circuit 325.

[0046] Furthermore, when the working states of the first connecting loop 324 and the second connecting loop 325 change, the gas source 40 will be connected to different positions on the valve cylinder 50 accordingly, and the part of the valve cylinder 50 originally connected to the gas source 40 will be opened and emptied, thereby achieving the purpose of driving the valve cylinder 50 to move in another direction.

[0047] In this way, the operator can adjust the position of the quick exhaust valve 321 by correspondingly operating the solenoid valve 311, thereby achieving the purpose of controlling the valve cylinder 50. The control process is very convenient, and very few corresponding parts are required, which reduces the failure rate of the system. At the same time, due to the reduction in the number of parts required for control, the installation and setting costs and operation and maintenance costs of the system of the utility model are greatly reduced.

[0048] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the control device 31 includes two solenoid valves 311, one of the solenoid valves 311 is connected to the gas source 40 through the gas inlet 3111, and the other solenoid valve 311 is connected to the control gas port 323 through the gas outlet 3112; the remaining gas inlet 3111 is connected to the remaining gas outlet 3112, thereby connecting the two solenoid valves 311.

[0049] It can be understood that the two solenoid valves 311 are connected to each other through the remaining gas inlet 3111 and the gas outlet 3112 to form a continuous airflow path, so that the gas from the gas source 40 can control the working state of the quick exhaust valve 321 through the two solenoid valves 311. In this way, when a single solenoid valve 311 fails, the necessary gas path control operation can be performed through the other solenoid valve 311, thereby preventing the single solenoid valve 311 from being stuck in the normally open state and causing the valve cylinder 50 to fail to adjust, thereby improving the safety of the system.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, each solenoid valve 311 has a discharge port 3113; when the solenoid valve 311 is active, it can connect the gas inlet 3111 with the gas outlet 3112 and cut off the discharge port 3113, or connect the gas outlet 3112 to the discharge port 3113 for emptying and cut off the gas inlet 3111.

[0051] It can be understood that when the solenoid valve 311 moves to a certain state, the gas inlet 3111 can be connected with the gas outlet 3112, and the exhaust port 3113 can be cut off at the same time, so that the gas can flow from the gas source 40 to the quick exhaust valve 321. When the solenoid valve 311 moves to another state, the gas outlet 3112 can be connected with the exhaust port 3113, and the gas inlet 3111 can be cut off at the same time, so as to realize the operation of exhausting gas from the quick exhaust valve 321.

[0052] In this way, the solenoid valve 311 can not only control the flow direction of the gas, but also effectively control the discharge of the gas to meet the requirements of different working states of the valve cylinder 50.

[0053] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the valve cylinder 50 includes a cylinder 51, a piston rod 52, two piston heads 53 and a reset member 54, the cylinder 51 has two active chambers 55, the piston rod 52 is slidably arranged in the cylinder 51, and the two piston heads 53 are respectively arranged at both ends of the piston rod 52, one of the active chambers 55 is divided into a first piston chamber 551 and a second piston chamber 552 by the piston head 53, and the other active chamber 55 is divided into a third piston chamber 553 and a fourth piston chamber 554 by the piston head 53, the reset member 54 is arranged in the fourth piston chamber 554, and the reset member 54 is driven and connected to the piston head 53.

[0054] It can be understood that there are two active chambers 55 in the cylinder 51, which are used to accommodate the piston rod 52 and the piston head 53, and constitute the main structure of the valve cylinder 50. The piston rod 52 is slidably arranged in the cylinder 51, and is used to transmit force and realize linear motion. The piston head 53 is respectively arranged at both ends of the piston rod 52, one of the active chambers 55 is divided into a first piston chamber 551 and a second piston chamber 552 by the piston head 53, and the other active chamber 55 is divided into a third piston chamber 553 and a fourth piston chamber 554 by the piston head 53. The piston head 53 drives the piston rod 52 to move, thereby controlling the opening and closing of the valve. The reset member 54 is arranged in the fourth piston chamber 554, and is connected to the piston head 53 for driving, and is used to provide a reset force when the air pressure is released, so that the piston rod 52 and the piston head 53 return to the initial position.

[0055] It should be noted that when the first piston chamber 551 and the third piston chamber 553 are connected to the air source 40 through the quick exhaust valve 321, the second piston chamber 552 will be emptied and depressurized through the quick exhaust valve 321, so that the two piston heads 53 jointly drive the piston rod 52 to overcome the force of the reset member 54 and move. When the second piston chamber 552 is connected to the air source 40 through the quick exhaust valve 321, the first piston chamber 551 and the third piston chamber 553 will be emptied and depressurized through the quick exhaust valve 321, so that the two piston heads 53 jointly drive the valve stem to move in the opposite direction.

[0056] like Figure 2 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the quick exhaust device 32 includes two quick exhaust valves, the two quick exhaust valves include a first quick exhaust valve 321a and a second quick exhaust valve 321b, the first quick exhaust valve 321a is provided with a control gas port 323, a first communication circuit 324 and a second communication circuit 325, and the second quick exhaust valve 321b is provided with a control gas port 323, a first communication circuit 324 and a second communication circuit 325;

[0057] Each first communication loop 324 includes a first interface 3241 , a second interface 3242 , and a third interface 3243 , and each second communication loop 325 includes a fourth interface 3251 , a fifth interface 3252 , and a sixth interface 3253 ;

[0058] On the first quick exhaust valve 321a, the control air port 323 is connected to the solenoid valve, the first interface 3241 is used for air supply and exhaust, the second interface 3242 is connected to the second piston chamber 552, the third interface 3243 is connected to the gas source, the fourth interface 3251 is used for air supply and exhaust, the fifth interface 3252 is connected to the control air port 323 of the second quick exhaust valve 321b, and the sixth interface 3253 is connected to the gas source, wherein, when the control air port 323 introduces gas, the first interface 3241 is connected to the second interface 3242, the third interface 3243 and the fourth interface 3251 are both cut off, and the fifth interface 3252 is connected to the sixth interface 3253; when the control air port 323 is exhausted and depressurized, the first interface 3241 and the sixth interface 3253 are both cut off, the second interface 3242 is connected to the third interface 3243, and the fourth interface 3251 is connected to the fifth interface 3252;

[0059] On the second quick exhaust valve 321b, the first interface 3241 is connected to the gas source, the second interface 3242 is connected to the first piston chamber 551, the third interface 3243 and the fourth interface 3251 are both used for air supply and exhaust, the fifth interface 3252 is connected to the third piston chamber 553, and the sixth interface 3253 is connected to the gas source. When the control gas port 323 is used to introduce gas, the first interface 3241 is connected to the second interface 3242, the third interface 3243 and the fourth interface 3251 are both cut off, and the fifth interface 3252 is connected to the sixth interface 3253; when the control gas port 323 is used to exhaust and release pressure, the first interface 3241 and the sixth interface 3253 are both cut off, the second interface 3242 is connected to the third interface 3243, and the fourth interface 3251 is connected to the fifth interface 3252.

[0060] It should be noted that when the gas source 40 is connected to the control gas port 323 of the first quick exhaust valve 321a (the control gas port 323 of the first quick exhaust valve 321a is directly connected to the solenoid valve 311) through the solenoid valve 311, the second piston chamber 552 is connected to the first port 3241 through the second port 3242 of the first quick exhaust valve 321a, so that the gas in the second piston chamber 552 can be discharged accordingly;

[0061] The control air port 323 on the second quick exhaust valve 321b (the control air port 323 of the second quick exhaust valve 321b is connected to the first quick exhaust valve 321a) is connected to the air source 40 through the fifth interface 3252 and the sixth interface 3253 on the first quick exhaust valve 321a. When gas is introduced into the control air port 323 of the second quick exhaust valve 321b, the first piston chamber 551 is connected to the air source 40 through the second interface 3242 and the first interface 3241 on the second quick exhaust valve 321b, so that the air source 40 supplies air to the first piston chamber 551.

[0062] The third piston chamber 553 is connected to the sixth port 3253 through the fifth port 3252 of the second quick exhaust valve 321 b , and is further connected to the gas source 40 , so that the gas source 40 supplies gas to the third piston chamber 553 .

[0063] In summary, when the solenoid valve 311 is actuated and the air source 40 is connected to the control air port 323 of the first quick exhaust valve 321a, the first piston chamber 551 and the third piston chamber 553 are both inflated, and the second piston chamber 552 is exhausted, so that the two piston heads 53 can overcome the elastic force of the reset member 54 to drive the piston rod 52 to move, thereby achieving the purpose of adjusting the valve in a predetermined direction.

[0064] It should also be noted that when the gas path between the gas source 40 and the first quick exhaust valve 321a is cut off by the solenoid valve 311, the gas supply to the control gas port 323 of the first quick exhaust valve 321a is stopped, so that the second interface 3242 and the third interface 3243 of the first quick exhaust valve 321a are connected, and the gas source 40 is connected to the second piston chamber 552 through the second interface 3242 and the third interface 3243, and the gas source 40 supplies gas to the second piston chamber 552. The fourth interface 3251 and the fifth interface 3252 on the first quick exhaust valve 321a are connected, so that the air connection of the control gas port 323 of the second quick exhaust valve 321b is exhausted.

[0065] When the control air port 323 of the second quick exhaust valve 321b is not supplied with gas, the second interface 3242 of the second quick exhaust valve 321b is connected to the third interface 3243, and the fourth interface 3251 and the fifth interface 3252 of the second quick exhaust valve 321b are also connected, so that the first piston chamber 551 is exhausted to the air through the second interface 3242 and the third interface 3243, and the third piston chamber 553 is exhausted to the air through the fourth interface 3251 and the fifth interface 3252.

[0066] In summary, when the solenoid valve 311 is actuated to disconnect the air path between the air source 40 and the control air port 323 of the first quick exhaust valve 321a, the first piston chamber 551 and the third piston chamber 553 are both exhausted, and the second piston chamber 552 is inflated, so that the two piston heads 53 can overcome the elastic force of the reset member 54 to drive the piston rod 52 to move, thereby achieving the purpose of moving the valve in another direction for adjustment.

[0067] like Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the quick exhaust device 32 includes a quick exhaust valve 321, a first flow amplifier 322a and a second flow amplifier 322b, and both the first flow amplifier 322a and the second flow amplifier 322b have a flow control port 3221, a flow inlet 3222, a flow outlet 3223 and a flow discharge port 3224.

[0068] It should be noted that the first flow amplifier 322a is provided with a flow control port 3221, a flow inlet 3222, a flow outlet 3223 and a flow discharge port 3224, and the second flow amplifier 322b is also provided with a flow control port 3221, a flow inlet 3222, a flow outlet 3223 and a flow discharge port 3224.

[0069] The first communication loop 324 includes a first interface 3241, a second interface 3242 and a third interface 3243, and the second communication loop 325 includes a fourth interface 3251, a fifth interface 3252 and a sixth interface 3253. The first interface 3241 and the fourth interface 3251 are both connected to the gas source 40, and the third interface 3243 and the sixth interface 3253 are both used for air supply and exhaust. When the control gas port 323 introduces gas, the first interface 3241 is connected to the second interface 3242, the third interface 3243 and the fourth interface 3251 are both cut off, and the fifth interface 3252 is connected to the sixth interface 3253; when the control gas port 323 is exhausted and depressurized, the first interface 3241 and the sixth interface 3253 are both cut off, the second interface 3242 is connected to the third interface 3243, and the fourth interface 3251 is connected to the fifth interface 3252;

[0070] On the first flow amplifier 322a, the flow control port 3221 is connected to the second interface 3242, the flow inlet 3222 is connected to the gas source, and the flow outlet 3223 is connected to the first piston chamber and the third piston chamber respectively, wherein when the flow control port 3221 introduces gas, the flow inlet 3222 is connected to the flow outlet 3223, and the flow discharge port 3224 is cut off; when the flow control port 3221 is exhausted and pressure is released, the flow inlet 3222 is cut off, and the flow outlet 3223 is connected to the flow discharge port 3224;

[0071] On the second flow amplifier 322b, the flow control port 3221 is connected to the fifth interface 3252, the flow inlet 3222 is connected to the gas source, and the flow outlet 3223 is connected to the second piston chamber, wherein when the flow control port 3221 introduces gas, the flow inlet 3222 is connected to the flow outlet 3223, and the flow discharge port 3224 is cut off; when the flow control port 3221 is used to exhaust and release pressure, the flow inlet 3222 is cut off, and the flow outlet 3223 is connected to the flow discharge port 3224.

[0072] It should be noted that when the air source 40 and the control air port 323 of the quick exhaust valve 321 are connected through the solenoid valve 311, the air source 40 is connected to the flow control port 3221 of the first flow amplifier 322a through the first interface 3241 and the second interface 3242, so that the air source 40 is connected to the flow outlet 3223 through the flow inlet 3222 of the first flow amplifier 322a, and further connected to the first piston chamber 551 and the third piston chamber 553 through the flow outlet 3223; in this way, the air source 40 supplies air to the first piston chamber 551 and the third piston chamber 553.

[0073] Furthermore, when the air source 40 is connected to the control air port 323 of the quick exhaust valve 321 through the solenoid valve 311, the fourth interface 3251 of the quick exhaust valve 321 is in a cut-off state, and the air source 40 cannot be connected to the flow control port 3221 of the second flow amplifier 322b, so that the flow inlet 3222 and the flow outlet 3223 of the second flow amplifier 322b are in a cut-off state, and the air source 40 cannot be transmitted through the second flow amplifier 322b. At the same time, the flow outlet 3223 of the second flow amplifier 322b is connected to the flow discharge port 3224; thus, the second piston chamber 552 is connected to the air through the flow outlet 3223 and the flow discharge port 3224, and the second piston chamber 552 is emptied.

[0074] In summary, when the air source 40 is connected to the control air port 323 of the quick exhaust valve 321 through the solenoid valve 311, the first piston chamber 551 and the third piston chamber 553 are both inflated, and the second piston chamber 552 is exhausted, so that the two piston heads 53 can overcome the elastic force of the reset member 54 to drive the piston rod 52 to move, thereby achieving the purpose of adjusting the valve in a predetermined direction.

[0075] When the solenoid valve 311 cuts off the gas path between the gas source 40 and the control gas port 323 of the quick exhaust valve 321, the second interface 3242 of the quick exhaust valve 321 is connected to the third interface 3243, so that the flow control port 3221 of the first flow amplifier 322a is discharged to the air through the second interface 3242 and the third interface 3243, so that the flow outlet 3223 of the first flow amplifier 322a is connected to the flow discharge port 3224, and then the first piston chamber 551 and the third piston chamber 553 are discharged to the air through the first flow amplifier 322a;

[0076] When the solenoid valve 311 cuts off the air path between the air source 40 and the control air port 323 of the quick exhaust valve 321, the fourth interface 3251 of the quick exhaust valve 321 is connected to the fifth interface 3252, so that the air source 40 is conducted to the flow control port 3221 of the second flow amplifier 322b through the fourth interface 3251 and the fifth interface 3252; in this way, the flow inlet 3222 and the flow outlet 3223 of the second flow amplifier 322b are connected, and the air source 40 is conducted to the second piston chamber 552 through the second flow amplifier 322b.

[0077] In summary, when the air path between the air source 40 and the control air port 323 of the quick exhaust valve 321 is cut off by the solenoid valve 311, the first piston chamber 551 and the third piston chamber 553 are both exhausted, and the second piston chamber 552 is intaken, thereby achieving the purpose of adjusting the two piston heads 53 in another direction.

[0078] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the nuclear power multi-cylinder pneumatic stop valve control system 30 also includes an introduction device 33, one end of the introduction device 33 is connected to the gas source 40, and the other end of the introduction device 33 is respectively connected to the control device 31 and the quick exhaust device 32.

[0079] It can be understood that the introduction device 33 is used to connect the gas source 40 with the subsequent control device 31 and the quick exhaust device 32.

[0080] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the introduction device 33 includes a one-way valve 331 and a four-way connector 332. The four-way connector 332 is connected to the gas source 40 through the one-way valve 331. The four-way connector 332 is also connected to the control device 31 and the quick exhaust device 32 respectively. The one-way valve 331 supplies gas from the gas source 40 to the four-way connector 332.

[0081] It can be understood that the one-way valve 331 is set so that the gas can only flow from the gas source 40 to the four-way connector 332. The four-way connector 332 is a prior art, which is used to receive the gas from the gas source 40 and divert the gas to the control device 31 and the quick exhaust device 32.

[0082] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, the introduction device 33 also includes a filter pressure reducing valve 333, one end of the filter pressure reducing valve 333 is connected to the air source 40, and the other end of the filter pressure reducing valve 333 is connected to the four-way connector 332 through a one-way valve 331.

[0083] It can be understood that the filter pressure reducing valve 333 is a prior art, which is a valve device that combines filtering function and pressure reducing function; it can remove impurities and particulate matter in the fluid, protect downstream equipment from pollution damage, and can also reduce the input pressure to a predetermined safe and stable level and maintain the output pressure stable.

[0084] like Figure 2 and Figure 3 As shown, in some embodiments of the nuclear power multi-cylinder pneumatic stop valve control system 30, coils are provided at opposite ends of the solenoid valve 311, and the solenoid valve 311 can be operated when the coil is energized to control the connection or disconnection of the gas inlet 3111 and the gas outlet 3112.

[0085] It can be understood that when different coils are energized, corresponding magnetic fields are generated, and the magnetic fields generated by different coils will attract or repel the movable parts inside (usually the iron core). The movement of the iron core will cause the channel inside the valve to switch, thereby controlling the flow direction of the fluid.

[0086] The implementation of this utility model has the following beneficial effects:

[0087] The utility model relates to a nuclear power multi-cylinder pneumatic stop valve control system, which can control the quick exhaust valve to adjust the position through the solenoid valve. After the position adjustment, the quick exhaust valve can introduce the gas source into different positions of the valve cylinder, and quickly empty the corresponding position of the valve cylinder through the quick exhaust valve. In this way, compared with the control system in the related art, the utility model only needs the solenoid valve and the quick exhaust valve to realize the control of the valve cylinder. The overall structure is very simple, which reduces the cost and improves the convenience of operation.

[0088] At the same time, due to the reduction of control components, the failure rate is reduced, the difficulty of maintenance is reduced, and the maintenance cost is reduced.

[0089] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0090] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A nuclear power multi-cylinder pneumatic stop valve control system, which is connected to the air source and the valve cylinder respectively, characterized in that: The nuclear power multi-cylinder pneumatic stop valve control system includes: A control device, the control device comprising at least one solenoid valve, the solenoid valve having a gas inlet and a gas outlet, the gas inlet being connected to the gas source; and A quick exhaust device, the quick exhaust device comprising at least one quick exhaust valve, the quick exhaust valve having a control air port, a first communication circuit and a second communication circuit, the control air port being connected to the solenoid valve, the first communication circuit and the second communication circuit being both connected to the air source, and the first communication circuit and the second communication circuit being respectively connected to two ends of the valve cylinder; Among them, the solenoid valve is used to control the connection between the air inlet and the air outlet, and switches the position of the quick exhaust valve by opening or cutting off the connection between the air source and the control air port, and then inflates or empties the two ends of the valve cylinder respectively through the first connecting circuit and the second connecting circuit.

2. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 1 is characterized in that: The control device comprises two solenoid valves, one of which is connected to the gas source through the gas inlet, and the other solenoid valve is connected to the control gas port through the gas outlet; The remaining gas inlet is communicated with the remaining gas outlet, thereby communicating with the two solenoid valves.

3. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 2 is characterized in that: Each of the solenoid valves has a discharge port; When the solenoid valve is activated, the gas inlet can be connected to the gas outlet and the exhaust port can be cut off, or the gas outlet can be connected to the exhaust port for evacuation and the gas inlet can be cut off.

4. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 1 is characterized in that: The valve cylinder includes a cylinder body, a piston rod, two piston heads and a reset member, wherein the cylinder body is provided with two movable chambers, the piston rod is slidably arranged in the cylinder body, and the two piston heads are respectively arranged at both ends of the piston rod, wherein one of the movable chambers is divided into a first piston chamber and a second piston chamber by the piston head, and the other movable chamber is divided into a third piston chamber and a fourth piston chamber by the piston head, the reset member is arranged in the fourth piston chamber, and the reset member is drivingly connected to the piston head.

5. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 4 is characterized in that: The quick exhaust device comprises two quick exhaust valves, the two quick exhaust valves comprise a first quick exhaust valve and a second quick exhaust valve, the first quick exhaust valve is provided with the control air port, the first communication circuit and the second communication circuit, the second quick exhaust valve is provided with the control air port, the first communication circuit and the second communication circuit; Each of the first communication loops includes a first interface, a second interface and a third interface, and each of the second communication loops includes a fourth interface, a fifth interface and a sixth interface; On the first quick exhaust valve, the control air port is connected to the solenoid valve, the first interface is used for air supply and exhaust, the second interface is connected to the second piston chamber, the third interface is connected to the air source, the fourth interface is used for air supply and exhaust, the fifth interface is connected to the control air port of the second quick exhaust valve, and the sixth interface is connected to the air source, wherein, when the control air port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control air port is exhausted and depressurized, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface; On the second quick exhaust valve, the first interface is connected to the gas source, the second interface is connected to the first piston chamber, the third interface and the fourth interface are both used for air supply and exhaust, the fifth interface is connected to the third piston chamber, and the sixth interface is connected to the gas source, wherein, when the control gas port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control gas port is used to exhaust and release pressure, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface.

6. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 4 is characterized in that: The quick exhaust device comprises a quick exhaust valve, a first flow amplifier and a second flow amplifier, wherein the first flow amplifier and the second flow amplifier both have a flow control port, a flow inlet, a flow outlet and a flow discharge port; The first communication circuit includes a first interface, a second interface and a third interface, the second communication circuit includes a fourth interface, a fifth interface and a sixth interface, the first interface and the fourth interface are both connected to the gas source, the third interface and the sixth interface are both used for air supply and exhaust, when the control gas port introduces gas, the first interface is connected to the second interface, the third interface and the fourth interface are both cut off, and the fifth interface is connected to the sixth interface; when the control gas port is exhausted and depressurized, the first interface and the sixth interface are both cut off, the second interface is connected to the third interface, and the fourth interface is connected to the fifth interface; On the first flow amplifier, the flow control port is connected to the second interface, the flow inlet is connected to the gas source, and the flow outlet is connected to the first piston chamber and the third piston chamber respectively, wherein when the flow control port introduces gas, the flow inlet is connected to the flow outlet, and the flow discharge port is cut off; when the flow control port is exhausted and pressure is released, the flow inlet is cut off, and the flow outlet is connected to the flow discharge port; On the second flow amplifier, the flow control port is connected to the fifth interface, the flow inlet is connected to the gas source, and the flow outlet is connected to the second piston chamber, wherein when the flow control port introduces gas, the flow inlet is connected to the flow outlet, and the flow discharge port is cut off; when the flow control port is used to exhaust and release air, the flow inlet is cut off, and the flow outlet is connected to the flow discharge port.

7. The nuclear power multi-cylinder pneumatic stop valve control system according to any one of claims 1 to 6, characterized in that: The nuclear power multi-cylinder pneumatic stop valve control system also includes an introduction device, one end of which is connected to the gas source, and the other end of which is respectively connected to the control device and the quick exhaust device.

8. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 7 is characterized in that: The introduction device includes a one-way valve and a four-way joint. The four-way joint is connected to the gas source through the one-way valve. The four-way joint is also connected to the control device and the quick exhaust device respectively. The one-way valve supplies gas from the gas source to the four-way joint.

9. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 8, characterized in that: The introduction device further comprises a filter pressure reducing valve, one end of which is connected to the gas source, and the other end of which is connected to the four-way joint through the one-way valve.

10. The nuclear power multi-cylinder pneumatic stop valve control system according to claim 1, characterized in that: The electromagnetic valve is provided with coils at two opposite ends respectively. The electromagnetic valve can be operated when the coils are energized to control the connection or disconnection between the gas inlet and the gas outlet.

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