Piston sealing device of nuclear power station regulating valve actuating mechanism

Abstract

The utility model relates to the technical field of sealing devices, in particular to a nuclear power station regulating valve actuating mechanism piston sealing device which comprises a first connecting shell and a second connecting shell. Piston structures are arranged in the connecting shell I and the connecting shell II; the mounting and dismounting structure is mounted outside the connecting shell I and the connecting shell II; compared with the prior art, by arranging the mounting and dismounting structure, mounting and dismounting between the first connecting shell and the second connecting shell are achieved, replacement of the first connector and the second connector can be facilitated, and meanwhile the working efficiency of workers can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing devices, in particular to a piston sealing device of an actuator of a regulating valve in a nuclear power station. Background Art

[0002] The regulating valve, also known as the control valve, is used in the field of industrial automation process control to change the final control of process parameters such as medium flow, pressure, temperature, and liquid level by power operation by receiving the control signal output by the regulating control unit.

[0003] During long-term use, the piston needs to be replaced in a timely manner to ensure the sealing effect of the piston. However, the existing piston is cumbersome, time-consuming and labor-intensive to replace, which affects the work efficiency of the staff. Therefore, further improvements are needed on this basis. Utility Model Content

[0004] The purpose of the utility model is to provide a piston sealing device for an actuator of a regulating valve in a nuclear power plant, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A piston sealing device for a nuclear power plant regulating valve actuator, comprising:

[0007] Connecting shell 1 and connecting shell 2, wherein a cavity is provided in the middle of one end of the connecting shell 1, and piston structures are provided inside the connecting shell 1 and the connecting shell 2, and the piston sealing structure is used to prevent leakage of liquid and gas;

[0008] The installation and disassembly structure is installed on the outside of the connecting shell one and the connecting shell two, which can facilitate the installation and disassembly of the connecting shell one and the connecting shell two.

[0009] As a further solution of the present invention: the piston structure includes:

[0010] Connector 1, said connector 1 being slidably connected to the interior of connecting shell 1, a limiting ring 1 being provided on the exterior of connector 1, an elastic member 2 being sleeved on the exterior of connector 1, and two ends of elastic member 2 being fixedly connected to connector 1 and the inner wall of connecting shell 1, respectively;

[0011] Connector 2, said connector 2 is slidably connected to the inside of connecting shell 2, a limiting ring 2 is provided on the outside of connector 2, an elastic part 3 is sleeved on the outside of connector 2, the two ends of elastic part 3 are respectively fixedly connected to connector 2 and the inner wall of connecting shell 2, and the one side where connector 1 and connector 2 are docked is adapted.

[0012] As another solution of the present invention: the installation and disassembly structure includes:

[0013] A mounting sleeve, wherein the mounting sleeve is slidably connected to the outside of the connecting shell 1, a limiting protrusion is provided on the outside of the connecting shell 1, and an elastic member 1 is provided in the closed area formed by the limiting protrusion and the mounting sleeve, and the two ends of the elastic member 1 are respectively fixedly connected to the mounting sleeve and the limiting protrusion;

[0014] A mounting groove is provided in the middle of the connecting shell 1, a pinball is provided inside the mounting groove, and the pinball is slidably engaged with the mounting sleeve;

[0015] The groove is arranged on the outer side of the second connecting shell and is adapted to fit between the pinball.

[0016] As another solution of the present invention: a limit plate is provided at the position of the cavity formed by the connecting shell 1 and the installation sleeve, and the limit plate and the installation sleeve are in sliding fit.

[0017] As another solution of the present invention: the material of the connector 1 and the connector 2 is aluminum alloy.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Compared with the prior art, by providing an installation and disassembly structure, the installation and disassembly between the connecting shell 1 and the connecting shell 2 can be realized, which can facilitate the replacement of the connecting head 1 and the connecting head 2 and also improve the work efficiency of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the piston sealing device of the nuclear power plant regulating valve actuator of the utility model.

[0021] Figure 2 This is a structural diagram of the connecting shell 1 in the piston sealing device of the nuclear power plant regulating valve actuator of the utility model.

[0022] Figure 3 This is a structural diagram of the elastic component 1 in the piston sealing device of the nuclear power plant regulating valve actuator of the utility model.

[0023] In the figure: 1-connecting shell 1, 2-cavity, 3-connecting head 1, 4-elastic part 1, 5-mounting groove, 6-pinball, 7-limiting protrusion, 8-limiting plate, 9-elastic part 2, 10-limiting ring 1, 11-connecting shell 2, 12-groove, 13-connecting head 2, 14-limiting ring 2, 15-elastic part 3, 16-mounting sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 3 This embodiment provides a piston sealing device for a nuclear power plant regulating valve actuator, the piston sealing device for a nuclear power plant regulating valve actuator comprising:

[0026] Connecting shell 1 and connecting shell 2 11, a cavity 2 is provided in the middle of one end of the connecting shell 1, and a piston structure is provided inside the connecting shell 1 and the connecting shell 2 11, and the piston sealing structure is used to prevent leakage of liquid and gas;

[0027] An installation and disassembly structure, which is installed on the outside of the connecting shell 1 and the connecting shell 2 11, and can facilitate the installation and disassembly of the connecting shell 1 and the connecting shell 2 11;

[0028] Compared with the prior art, by setting up an installation and disassembly structure, the installation and disassembly between the connecting shell 1 and the connecting shell 2 11 can be realized, which can facilitate the replacement of the connecting head 1 3 and the connecting head 2 13 and also improve the work efficiency of the staff.

[0029] See also Figure 1-Figure 2 In one embodiment, the piston structure comprises:

[0030] Connector 1 (3), said connector 1 (3) being slidably connected to the interior of the connecting shell 1, a limiting ring 10 being provided on the exterior of the connector 1 (3), an elastic member 2 (9) being sleeved on the exterior of the connector 1 (3), the ends of the elastic member 2 (9) being fixedly connected to the connector 1 (3) and the inner wall of the connecting shell 1, respectively;

[0031] Connector 2 13, said connector 2 13 is slidably connected to the interior of the connecting shell 2 11, a limit ring 2 14 is provided on the outside of the connector 2 13, and an elastic member 3 15 is sleeved on the outside of the connector 2 13, the ends of the elastic member 3 15 are respectively fixedly connected to the connector 2 13 and the inner wall of the connecting shell 2 11, and the connector 1 3 is adapted to the side where the connector 1 3 and the connector 2 13 are connected;

[0032] See also Figure 1 and Figure 3 In one embodiment, the installation and disassembly structure includes:

[0033] A mounting sleeve 16 is slidably connected to the outside of the connecting shell 1. A limiting protrusion 7 is provided on the outside of the connecting shell 1. An elastic member 4 is provided in the closed area formed by the limiting protrusion 7 and the mounting sleeve 16. The two ends of the elastic member 4 are fixedly connected to the mounting sleeve 16 and the limiting protrusion 7 respectively.

[0034] The mounting groove 5 is provided in the middle of the connecting shell 1, and a ball 6 is provided inside the mounting groove 5, and the ball 6 is slidably engaged with the mounting sleeve 16;

[0035] A groove 12 is provided on the outer side of the second connecting shell 11 and adapted to fit between the marble 6;

[0036] See also Figure 2 In one embodiment, a limit plate 8 is provided at the position of the cavity 2 formed by the connecting shell 1 and the mounting sleeve 16, and the limit plate 8 and the mounting sleeve 16 are slidably fitted;

[0037] When it is necessary to dock the connector 1 3 and the connector 2 13, one end of the groove 12 of the connecting shell 2 11 is inserted into the cavity 2 inside the connecting shell 1. At the same time, by pulling the installation sleeve 16 and sliding it along the outside of the connecting shell 1, the elastic member 4 shrinks and deforms. As the elastic member 4 shrinks, the connecting shell 2 11 enters the cavity 2, which can squeeze the ball 6 in the middle of the installation groove 5. When the connecting shell 2 11 is completely fitted with the cavity 2, the ball 6 is adapted to the groove 12. By loosening the installation sleeve 16, the elastic force of the elastic member 4 can reset the installation sleeve 16, and finally the elastic member 4 is fixed. The ball 6 is squeezed to form a snap fit between the ball 6 and the groove 12, completing the connection between the connecting shell 1 and the connecting shell 2 11. As the connection between the connecting shell 1 and the connecting shell 2 11 is formed, the connecting head 1 3 and the connecting head 2 13 of the connecting shell 1 and the connecting shell 2 11 are docked, and then the connecting head 1 3 and the connecting head 2 13 slide along the inner walls of the connecting shell 1 and the connecting shell 2 11 respectively. At this time, the elastic member 2 9 and the elastic member 3 15 undergo telescopic deformation respectively, and through the docking between the connecting head 1 3 and the connecting head 2 13, the sealed connection between the connecting head 1 3 and the connecting head 2 13 can be completed.

[0038] See also Figure 1-Figure 2 In one embodiment, the connector 1 3 and the connector 2 13 are made of aluminum alloy.

[0039] When it is necessary to replace connector 1 3 and connector 2 13, it is only necessary to slide the mounting sleeve 16 to make the ball 6 exit the groove 12 outside the connecting shell 2 11, thereby realizing the disassembly between connecting shell 1 1 and connecting shell 2 11. After completing the disassembly between connecting shell 1 1 and connecting shell 2 11, connector 1 3 and connector 2 13 can be replaced.

[0040] The working principle of this utility model is:

[0041] In this embodiment, when it is necessary to dock the connector 1 3 and the connector 2 13, one end of the groove 12 of the connecting shell 2 11 is inserted into the cavity 2 inside the connecting shell 1. At the same time, by pulling the installation sleeve 16 and sliding it along the outside of the connecting shell 1, the elastic member 4 shrinks and deforms. As the elastic member 4 shrinks, the connecting shell 2 11 enters the cavity 2, and can squeeze the ball 6 in the middle of the installation groove 5. When the connecting shell 2 11 is completely fitted with the cavity 2, the ball 6 and the groove 12 are adapted to each other. By loosening the installation sleeve 16, the elastic force of the elastic member 4 can reset the installation sleeve 16, and finally squeeze the ball 6, so that the ball 6 and the groove 12 are snap-fitted together, completing the connection between the connecting shell 1 and the connecting shell 2 11. As the connecting shell 1 is A connection is formed between the connecting shell 1 and the connecting shell 2 11, and a docking is formed between the connecting head 1 3 and the connecting head 2 13 of the connecting shell 1 and the connecting shell 2 11, so that the connecting head 1 3 and the connecting head 2 13 slide along the inner walls of the connecting shell 1 and the connecting shell 2 11 respectively. At this time, the elastic member 2 9 and the elastic member 3 15 respectively undergo telescopic deformation, and through the docking between the connecting head 1 3 and the connecting head 2 13, the sealed connection between the connecting head 1 3 and the connecting head 2 13 can be completed. When the connecting head 1 3 and the connecting head 2 13 need to be replaced, it is only necessary to slide the mounting sleeve 16 to make the pinball 6 withdraw from the groove 12 on the outside of the connecting shell 2 11, thereby realizing the disassembly between the connecting shell 1 and the connecting shell 2 11. After completing the disassembly between the connecting shell 1 and the connecting shell 2 11, the connecting head 1 3 and the connecting head 2 13 can be replaced.

[0042] Of course, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0044] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A piston sealing device for a nuclear power plant regulating valve actuator, characterized by: The piston sealing device of the nuclear power plant regulating valve actuator comprises: Connecting shell 1 and connecting shell 2, wherein a cavity is provided in the middle of one end of the connecting shell 1, and piston structures are provided inside the connecting shell 1 and the connecting shell 2, and the piston sealing structure is used to prevent leakage of liquid and gas; The installation and disassembly structure is installed on the outside of the connecting shell one and the connecting shell two, and can facilitate the installation and disassembly of the connecting shell one and the connecting shell two.

2. The piston sealing device of a nuclear power plant regulating valve actuator according to claim 1, characterized in that: The piston structure comprises: Connector 1, said connector 1 being slidably connected to the interior of connecting shell 1, a limiting ring 1 being provided on the exterior of connector 1, an elastic member 2 being sleeved on the exterior of connector 1, and two ends of elastic member 2 being fixedly connected to connector 1 and the inner wall of connecting shell 1, respectively; Connector 2, said connector 2 is slidably connected to the inside of connecting shell 2, a limiting ring 2 is provided on the outside of connector 2, an elastic part 3 is sleeved on the outside of connector 2, the two ends of elastic part 3 are respectively fixedly connected to connector 2 and the inner wall of connecting shell 2, and the one side where connector 1 and connector 2 are docked is adapted.

3. The piston sealing device of the nuclear power plant regulating valve actuator according to claim 2, characterized in that: The installation and disassembly structure includes: A mounting sleeve, wherein the mounting sleeve is slidably connected to the outside of the connecting shell 1, a limiting protrusion is provided on the outside of the connecting shell 1, and an elastic member 1 is provided in the closed area formed by the limiting protrusion and the mounting sleeve, and the two ends of the elastic member 1 are respectively fixedly connected to the mounting sleeve and the limiting protrusion; A mounting groove is provided in the middle of the connecting shell 1, a pinball is provided inside the mounting groove, and the pinball is slidably engaged with the mounting sleeve; The groove is arranged on the outer side of the second connecting shell and is adapted to fit between the pinball.

4. The piston sealing device of a nuclear power plant regulating valve actuator according to claim 3, characterized in that: A limit plate is provided at the position of the cavity formed by the connecting shell 1 and the mounting sleeve, and the limit plate is slidably fitted with the mounting sleeve.

5. The piston sealing device of the nuclear power plant regulating valve actuator according to claim 2 or 3, characterized in that: The material of the connector 1 and the connector 2 is aluminum alloy.

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