Nuclear power liquid metal rack transmission regulating valve

Abstract

The utility model discloses a nuclear power liquid metal rack transmission regulating valve, and relates to the field of regulating valves. The nuclear power liquid metal rack transmission regulating valve comprises a valve body, a transmission unit is installed on the outer side of the valve body, and the transmission unit is connected with a driving unit; a driving shaft is rotationally arranged in the valve body; the transmission unit comprises an end cover and a flange sleeve, a valve rod is movably inserted into the end cover, a rack is fixedly connected to the end of the valve rod, and the rack is connected with a gear in an engaged mode. The other end of the valve rod penetrates through the flange sleeve and is in transmission connection with the driving unit. According to the nuclear power liquid metal rack transmission regulating valve, the driving unit is used for driving the valve rod and the rack to move, and the rack is in meshed connection with the gear on the outer side of the end of the driving shaft, so that the rotation angle of the gear can be accurately controlled by controlling the linear movement distance of the valve rod; and then the driving shaft is used for driving the valve element to rotate to a proper angle in the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a nuclear power liquid metal rack transmission regulating valve. Background Art

[0002] A regulating valve generally consists of an actuator and a valve. The valve includes components such as the valve body, valve core, and valve stem. The valve body is the main part of the regulating valve, connecting to the pipeline and housing the valve core. The valve core is the core component of the regulating valve, controlling the flow of fluid. The valve stem connects the valve core to the actuator and transmits the actuator's driving force. The actuator is the power source of the regulating valve, driving the valve stem to change the valve core's opening.

[0003] In the valve part, the end of the valve stem is generally directly connected to the valve core, so that the valve stem can directly drive the valve core to rotate, thereby realizing the opening and closing of the valve body. However, in some cases where higher control precision is required, such as nuclear power liquid metal regulating valve, it is necessary to accurately control the flux of the regulating valve, and then when the valve stem is directly rotated to adjust the rotation angle of the valve core to achieve the opening, there is a situation where the adjustment is not precise enough. Therefore, this application proposes a nuclear power liquid metal rack transmission regulating valve. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a nuclear power liquid metal rack transmission control valve, which solves the problem of insufficient adjustment when directly rotating the valve stem to adjust the rotation angle of the valve core to achieve the opening in some situations where higher control precision is required, such as nuclear power liquid metal control valves, where the flux of the control valve needs to be accurately controlled.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A nuclear power liquid metal rack transmission regulating valve, comprising a valve body, a transmission unit is installed on the outer side of the valve body, and the transmission unit is connected to a drive unit;

[0006] A driving shaft is rotatably provided inside the valve body, and a valve core is fixedly installed on the end of the driving shaft;

[0007] The transmission unit comprises:

[0008] An end cover, the end cover is fixedly mounted on the outside of the valve body, a valve stem is movably inserted into the interior of the end cover, an end of the valve stem is fixedly connected to a rack, and the rack is meshed with a gear, and an end of the drive shaft extends toward the end cover and is fixedly inserted into the inner wall of the gear;

[0009] The flange sleeve is installed between the end cover and the drive unit, and the other end of the valve stem passes through the flange sleeve and is transmission-connected to the drive unit.

[0010] Preferably, a valve seat is fixedly installed inside the valve body, and the outer side of the valve core is in contact with the inner wall of the valve seat.

[0011] Preferably, an elastic bellows is fixedly connected between the outer side of the valve stem and the inner wall of the flange sleeve.

[0012] Preferably, the driving unit includes:

[0013] A valve cover, the valve cover is fixedly mounted on the end of the flange sleeve;

[0014] The mounting bracket is fixedly mounted on the outside of the valve cover, and the end of the valve stem passes through the flange sleeve and extends toward the mounting bracket.

[0015] Preferably, a nut barrel is rotatably provided inside the mounting frame, and the end of the valve stem is threadedly connected to the inner wall of the nut barrel.

[0016] Preferably, a handwheel is fixedly mounted on the outer side of the nut barrel.

[0017] The utility model discloses a nuclear power liquid metal rack transmission regulating valve, which has the following beneficial effects: during use, the nuclear power liquid metal rack transmission regulating valve utilizes a driving unit to drive the valve stem to perform linear motion in the flange sleeve and the end cover, thereby causing the rack at the end of the valve stem to move accordingly, and the rack is meshed with the gear on the outside of the drive shaft end, thereby being able to accurately control the rotation angle of the gear by controlling the linear movement distance of the valve stem, and then utilize the drive shaft to drive the valve core to rotate to a suitable angle inside the valve body, so that the valve can accurately adjust its opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a structural diagram of the valve body of the utility model;

[0021] Figure 3 This is a structural sectional view of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the drive unit of the utility model.

[0023] In the figure: 1. Valve body; 11. Drive shaft; 12. Valve core; 13. Valve seat; 2. Transmission unit; 21. End cover; 22. Flange sleeve; 23. Valve stem; 24. Rack; 25. Gear; 26. Elastic bellows; 3. Drive unit; 31. Valve cover; 32. Mounting bracket; 33. Nut cylinder; 34. Handwheel. DETAILED DESCRIPTION

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] The embodiment of the utility model discloses a nuclear power liquid metal rack transmission regulating valve.

[0026] According to the attached Figure 1-4 As shown, it includes a valve body 1, a transmission unit 2 is installed on the outside of the valve body 1, and the transmission unit 2 is connected to a drive unit 3;

[0027] A drive shaft 11 is rotatably provided inside the valve body 1, and a valve core 12 is fixedly installed at the end of the drive shaft 11;

[0028] Transmission unit 2 includes:

[0029] End cover 21, which is fixedly mounted on the outside of the valve body 1. A valve stem 23 is movably inserted into the interior of the end cover 21. The end of the valve stem 23 is fixedly connected to a rack 24, which is meshed with a gear 25. The end of the drive shaft 11 extends toward the end cover 21 and is fixedly inserted into the inner wall of the gear 25.

[0030] The flange sleeve 22 is installed between the end cover 21 and the drive unit 3, and the other end of the valve stem 23 passes through the flange sleeve 22 and is in transmission connection with the drive unit 3.

[0031] During use, the driving unit 3 is used to drive the valve stem 23 to perform linear motion in the flange sleeve 22 and the end cover 21, so that the rack 24 at the end of the valve stem 23 moves accordingly, and the rack 24 is meshed and connected with the gear 25 on the outer side of the end of the driving shaft 11. The linear movement distance of the valve stem 23 can be controlled to accurately control the rotation angle of the gear 25, and the driving shaft 11 can be used to drive the valve core 12 to rotate to a suitable angle inside the valve body 1, so that the valve can accurately adjust its opening.

[0032] Furthermore, a valve seat 13 is fixedly installed inside the valve body 1 , and the outer side of the valve core 12 is in contact with the inner wall of the valve seat 13 .

[0033] By providing the valve seat 13 , the outer side of the valve core 12 fits against the inner wall of the valve seat 13 , thereby sealing the interior of the valve body 1 .

[0034] Furthermore, an elastic bellows 26 is fixedly connected between the outer side of the valve stem 23 and the inner wall of the flange sleeve 22 .

[0035] The elastic bellows 26 is provided to enhance the sealing performance between the outer side of the valve stem 23 and the inner wall of the flange sleeve 22 .

[0036] Specifically disclosed, the drive unit 3 includes:

[0037] The valve cover 31 is fixedly mounted on the end of the flange sleeve 22;

[0038] The mounting bracket 32 ​​is fixedly mounted on the outside of the valve cover 31 , and the end of the valve stem 23 passes through the flange sleeve 22 and extends into the mounting bracket 32 ​​.

[0039] Furthermore, a nut barrel 33 is rotatably provided inside the mounting bracket 32 ​​, and the end of the valve stem 23 is threadedly connected to the inner wall of the nut barrel 33 .

[0040] When the nut barrel 33 is rotated, the end of the valve stem 23 is threadedly connected to the inner wall of the nut barrel 33 , thereby driving the valve stem 23 to perform linear motion.

[0041] Furthermore, a hand wheel 34 is fixedly mounted on the outer side of the nut cylinder 33 .

[0042] The hand wheel 34 is provided to facilitate the rotation of the nut barrel 33 .

[0043] During use, the nut tube 33 is rotated. Since the end of the valve stem 23 is threadedly connected to the inner wall of the nut tube 33, the valve stem 23 can be driven to move linearly in the flange sleeve 22 and the end cover 21, so that the rack 24 at the end of the valve stem 23 moves accordingly, and the rack 24 is meshed with the gear 25 on the outer side of the end of the drive shaft 11. The linear movement distance of the valve stem 23 can be controlled to accurately control the rotation angle of the gear 25, and the drive shaft 11 can be used to drive the valve core 12 to rotate to a suitable angle inside the valve body 1, so that the valve can accurately adjust its opening.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A nuclear power liquid metal rack transmission regulating valve, comprising a valve body (1), characterized in that: A transmission unit (2) is installed on the outer side of the valve body (1), and the transmission unit (2) is connected to a drive unit (3); A driving shaft (11) is rotatably provided inside the valve body (1), and a valve core (12) is fixedly mounted on the end of the driving shaft (11); The transmission unit (2) comprises: An end cover (21) is fixedly mounted on the outside of the valve body (1), a valve stem (23) is movably inserted into the interior of the end cover (21), an end of the valve stem (23) is fixedly connected to a rack (24), and the rack (24) is meshedly connected to a gear (25), and an end of the drive shaft (11) extends toward the end cover (21) and is fixedly inserted into the inner wall of the gear (25); A flange sleeve (22) is installed between the end cover (21) and the drive unit (3), and the other end of the valve stem (23) passes through the flange sleeve (22) and is transmission-connected to the drive unit (3).

2. A nuclear power liquid metal rack transmission regulating valve according to claim 1, characterized in that: A valve seat (13) is fixedly mounted inside the valve body (1), and the outer side of the valve core (12) is in contact with the inner wall of the valve seat (13).

3. The nuclear power liquid metal rack transmission regulating valve according to claim 1, characterized in that: An elastic bellows (26) is fixedly connected between the outer side of the valve stem (23) and the inner wall of the flange sleeve (22).

4. The nuclear power liquid metal rack transmission regulating valve according to claim 1, characterized in that: The driving unit (3) comprises: a valve cover (31), wherein the valve cover (31) is fixedly mounted on an end portion of the flange sleeve (22); The mounting frame (32) is fixedly mounted on the outside of the valve cover (31), and the end of the valve stem (23) passes through the flange sleeve (22) and extends toward the mounting frame (32).

5. The nuclear power liquid metal rack transmission regulating valve according to claim 4, characterized in that: A nut barrel (33) is rotatably arranged inside the mounting frame (32), and the end of the valve stem (23) is threadedly connected to the inner wall of the nut barrel (33).

6. The nuclear power liquid metal rack transmission regulating valve according to claim 5, characterized in that: A hand wheel (34) is fixedly mounted on the outer side of the nut cylinder (33).

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