Anti-deflection device for valve stem of feed water regulating valve

Abstract

The utility model discloses a kind of water supply regulating valve stem anti-deflection devices, comprising: with the support fixed connection of external support supporting member;Length direction and the axial parallel arrangement of valve stem guiding member, with the fixed connection of supporting member, and is equipped with first guide part;With the fixed connection of the valve stem tight component, is equipped with second guide part, the second guide part cooperates with the first guide part, and the movement path of the tight component is limited. The cooperation of the second guide part of the tight component setting and the first guide part of guiding member setting, the movement path of the tight component is limited, so as to limit the movement path of valve stem, ensure the direction stability in the operation process of valve stem, prevent damage key measuring component.

Description

Technical Field

[0001] This utility model relates to the technical field of valve stem operating devices, and in particular to a valve stem anti-deflection device for a water supply regulating valve. Background Technology

[0002] A nuclear power plant is equipped with feedwater regulating valves, which control the flow rate of the medium in the pipeline. Components used for valve control typically include positioners, valve position feedback devices, filter pressure reducing valves, and EP (Electronic Power Transfer) converters. During valve regulation, the valve stem moves up and down to control the flow opening. However, during this movement, the valve stem may deflect. For magnetically inductive positioners or valve position feedback devices, this can cause the inductive magnetic plate on the valve stem to rub against the positioner or feedback device, leading to measurement failure and affecting the normal operation and control of the valve. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a valve stem anti-deflection device for a water supply regulating valve.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a valve stem anti-deflection device for a water supply regulating valve, comprising:

[0005] Support components that are fixedly connected to external brackets;

[0006] A guide member, whose length direction is parallel to the axial direction of the valve stem, is fixedly connected to the support member and is provided with a first guide portion;

[0007] The clamping assembly, which is fixedly connected to the valve stem, is provided with a second guide portion. The second guide portion cooperates with the first guide portion to restrict the movement path of the clamping assembly.

[0008] In some embodiments, the clamping assembly includes a first clamping block and a second clamping block, wherein the first clamping block and the second clamping block are detachably connected by fasteners and simultaneously clamp the valve stem;

[0009] The second guide portion is disposed on the first clamping block and / or the second clamping block.

[0010] In some embodiments, the first clamping block is provided with a first clamping groove whose shape matches the valve stem, and the second clamping block is provided with a second clamping groove whose shape matches the valve stem. The first clamping groove and the second clamping groove are arranged opposite to each other and together clamp the valve stem.

[0011] In some embodiments, the cross-section of the first clamping groove is a sector with a central angle less than or equal to 180°, and / or the cross-section of the second clamping groove is a sector with a central angle less than or equal to 180°.

[0012] In some embodiments, one of the first guide portion and the second guide portion is a guide groove, and one of the first guide portion and the second guide portion is a guide block.

[0013] In some embodiments, the guide is a plate with a rectangular cross-section;

[0014] The first guide portion is a guide member located near the second guide portion, and the second guide portion is a guide groove.

[0015] In some embodiments, the cross-section of the second guide portion is square and matches the shape of the first guide portion.

[0016] In some embodiments, the width of the second guide portion is greater than the thickness of the first guide portion.

[0017] In some embodiments, the device further includes a scale and a pointer, the scale being connected to the guide and parallel to the length direction of the guide; the pointing end of the pointer indicates the scale, and the other end of the pointer is fixedly connected to the clamping assembly.

[0018] In some embodiments, the range of the scale is the same as the range of the valve stem.

[0019] By implementing this utility model, the following beneficial effects can be achieved:

[0020] This utility model relates to a valve stem anti-deflection device for a water supply regulating valve, comprising: a support member fixedly connected to an external bracket; a guide member arranged parallel to the axial direction of the valve stem along its length, fixedly connected to the support member, and having a first guide portion; and a clamping assembly fixedly connected to the valve stem, having a second guide portion, the second guide portion cooperating with the first guide portion to restrict the movement path of the clamping assembly. Through the cooperation between the second guide portion of the clamping assembly and the first guide portion of the guide member, the movement path of the clamping assembly is restricted, thereby restricting the movement path of the valve stem, ensuring directional stability of the valve stem during operation, and preventing damage to critical measuring components. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the anti-deflection device for the valve stem of a water supply regulating valve according to an embodiment of this utility model;

[0023] Figure 2 yes Figure 1 A front view of the anti-deflection device on the valve stem of the water supply regulating valve. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

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

[0028] See Figure 1 and Figure 2One embodiment of this utility model discloses a valve stem anti-deflection device for a water supply regulating valve, including a support member 1, a guide member 2, and a clamping assembly 3. The support member 1 is fixedly connected to an external bracket 100, using the external bracket 100 of the valve as a fixed base, and maintains stability and a constant position during valve operation. The support member 1 and the external bracket 100 can be fixedly welded or detachably connected by bolts and nuts. The guide member 2 is arranged parallel to the axial direction of the valve stem 200 along its length direction. The guide member 2 is fixedly connected to the support member 1 and is provided with a first guide portion 21. The first guide portion 21 of the guide member 2 is prone to wear, and the guide member 2 and the support member 1 are detachably connected for easy replacement. The clamping assembly 3 is fixedly connected to the valve stem 200 and is provided with a second guide portion 35. The second guide portion 35 cooperates with the first guide portion 21 to restrict the movement path of the clamping assembly 3.

[0029] The support component 1 and the guide component 2 are installed separately on the external bracket 100 of the valve by fastening screws. The main reason for setting them as independent modules is that the valve may face wear problems during frequent operation. Therefore, the guide component 2 can be replaced independently when it needs to be replaced.

[0030] In some embodiments, one of the first guide portion 21 and the second guide portion 35 is a guide groove, and the other of the first guide portion 21 and the second guide portion 35 is a guide block. The guide block can slide along the guide groove, and the length direction of the guide groove is the same as the axial direction of the valve stem 200. For example, if the first guide portion 21 is a guide groove, then the second guide portion 35 is a guide block. If the second guide portion 35 is a guide groove, then the first guide portion 21 is a guide block. The width of the guide groove is about 1 mm larger than the width of the guide block to ensure that there is no jamming or obstruction between the guide block and the guide groove during the movement of the valve stem 200.

[0031] In some embodiments, the guide member 2 is a plate with a rectangular cross-section. The first guide portion 21 is the portion of the guide member 2 adjacent to the second guide portion 35, and the second guide portion 35 is a guide groove. The second guide portion 35 has a square cross-section that matches the shape of the first guide portion 21. The width of the second guide portion 35 is greater than the thickness of the first guide portion 21. Generally, the width of the second guide portion 35 is slightly greater than the thickness of the first guide portion 21 to allow for relative sliding while preventing wobbling.

[0032] In some embodiments, the clamping assembly 3 includes a first clamping block 31 and a second clamping block 33, which are detachably connected by fasteners and simultaneously clamp the valve stem 200. A second guide portion 35 is provided on the first clamping block 31 and / or the second clamping block 33. For example, a guide groove is formed on the first clamping block 31 or the second clamping block 33 in the direction near the guide member 2, or a guide groove is formed on both the first clamping block 31 and the second clamping block 33. This guide portion provides guidance when the first clamping block 31 and the second clamping block 33 are clamped together.

[0033] In some embodiments, the first clamping block 31 is provided with a first clamping groove 32 whose shape matches the valve stem 200, and the second clamping block 33 is provided with a second clamping groove 34 whose shape matches the valve stem 200. The first clamping groove 32 and the second clamping groove 34 are arranged opposite to each other and together clamp the valve stem 200.

[0034] In some embodiments, the cross-section of the first clamping groove 32 is a sector with a central angle less than or equal to 180°, and / or, the cross-section of the second clamping groove 34 is a sector with a central angle less than or equal to 180°. For example, the first clamping groove 32 and the second clamping groove 34 are respectively near-semi-circular grooves, and the radii of the first clamping groove 32 and the second clamping groove 34 can match the radius of the valve stem 200. After the first clamping block 31 and the second clamping block 33 clamp the valve stem 200, a gap of about 1mm is provided between the first clamping block 31 and the second clamping block 33 to ensure that, under screw tightening, the first clamping block 31 and the second clamping block 33 can approach and clamp the valve stem 200.

[0035] In some embodiments, the system further includes a graduated scale 4 and a pointer 5. The scale 4 is connected to the guide member 2 and is parallel to the length direction of the guide member 2. The indicating end of the pointer 5 points to the scale 4, and the other end of the pointer 5 is fixedly connected to the clamping assembly 3. The range of the scale 4 is the same as the range of the valve stem 200. The scale 4, through its graduations, can standardize the displacement range of the valve stem 200. The scale 4 can be adjusted and fixed according to the actual zero point and range of the valve stem 200. The pointer 5 is fixed to the first clamping block 31 or the second clamping block 33 and can move along with the valve stem 200 during its vertical displacement. The position of the scale 4 indicated by the pointer 5 represents the displacement range of the valve.

[0036] The installation direction of the anti-deflection device for the water supply regulating valve stem of this utility model is as follows:

[0037] 1. Install and fix the support component 1 and the guide component 2 in sequence.

[0038] 2. Install and fix the ruler 4.

[0039] 3. Install pointer 5 on the first clamping block 31 or the second clamping block 33. Pointer 5 is set on the same side as the fixed scale 4.

[0040] 4. Align the first clamping block 31 and the second clamping block 33 to clamp the valve stem 200. Clamp the guide block through the guide groove. Align the pointer 5 with the zero position of the scale 4 in the horizontal position. Insert a feeler gauge of about 0.5mm on one side between the guide block and the guide groove and press it tightly. Tighten the fastening screws between the first clamping block 31 and the second clamping block 33 to complete the fixing of the clamping assembly 3.

[0041] 5. Apply lubricating oil between the guide block and the guide groove to reduce frictional damage between them.

[0042] By implementing this utility model, the following beneficial effects can be achieved:

[0043] This utility model relates to a valve stem anti-deflection device for a water supply regulating valve. Through the cooperation of the second guide portion 35 of the clamping assembly 3 and the first guide portion 21 of the guide member 2, the movement path of the clamping assembly 3 is restricted, thereby limiting the movement path of the valve stem 200. This ensures the directional stability of the valve stem 200 during operation and prevents damage to critical measuring components. During adjustment, the deflection displacement of the valve stem 200 is effectively limited. The components are detachably connected and can be flexibly replaced. Furthermore, the displacement value of the valve stem 200 can be directly observed by using a scale 4 and a pointer 5.

[0044] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A valve stem anti-deflection device for a water supply regulating valve, characterized in that, include: Support member (1) fixedly connected to external bracket (100); A guide member (2) whose length direction is parallel to the axial direction of the valve stem (200) is fixedly connected to the support member (1) and is provided with a first guide part (21); The clamping assembly (3) fixedly connected to the valve stem (200) is provided with a second guide portion (35), which cooperates with the first guide portion (21) to restrict the movement path of the clamping assembly (3).

2. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 1, characterized in that, The clamping assembly (3) includes a first clamping block (31) and a second clamping block (33), wherein the first clamping block (31) and the second clamping block (33) are detachably connected by fasteners and simultaneously clamp the valve stem (200); The second guide portion (35) is disposed on the first clamping block (31) and / or the second clamping block (33).

3. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 2, characterized in that, The first clamping block (31) is provided with a first clamping groove (32) whose shape matches the valve stem (200), and the second clamping block (33) is provided with a second clamping groove (34) whose shape matches the valve stem (200). The first clamping groove (32) and the second clamping groove (34) are arranged opposite to each other and together clamp the valve stem (200).

4. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 3, characterized in that, The first clamping groove (32) has a cross-section of a sector with a central angle less than or equal to 180°, and / or the second clamping groove (34) has a cross-section of a sector with a central angle less than or equal to 180°.

5. The anti-deflection device for the valve stem of the water supply regulating valve according to any one of claims 1-4, characterized in that, One of the first guide portion (21) and the second guide portion (35) is a guide groove, and one of the first guide portion (21) and the second guide portion (35) is a guide block.

6. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 5, characterized in that, The guide member (2) is a plate with a rectangular cross-section; The first guide portion (21) is a guide member (2) near the second guide portion (35), and the second guide portion (35) is a guide groove.

7. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 6, characterized in that, The second guide portion (35) has a square cross-section and matches the shape of the first guide portion (21).

8. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 7, characterized in that, The width of the second guide portion (35) is greater than the thickness of the first guide portion (21).

9. The anti-deflection device for the valve stem of the water supply regulating valve according to any one of claims 1-4, characterized in that, It also includes a scale (4) and a pointer (5) with graduations. The scale (4) is connected to the guide (2) and is parallel to the length direction of the guide (2). The pointing end of the pointer (5) points to the scale (4), and the other end of the pointer (5) is fixedly connected to the clamping assembly (3).

10. The anti-deflection device for the valve stem of the water supply regulating valve according to claim 9, characterized in that, The range of the scale (4) is the same as the range of the valve stem (200).

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