Nuclear power facility valve opening indicator

Abstract

The utility model relates to a nuclear power facility valve opening indicator, on the nuclear power facility valve opening indicator, a movable device can slide relatively so as to be matched and aligned with two different height positions, and a fixing device is used for locking or releasing the movable device. In this way, it is ensured that maintenance personnel can accurately read and adjust the opening degree of the valve adjusting rotating handle, and therefore the operation precision and efficiency of the valve adjusting rotating handle are remarkably improved. And moreover, the universality of the reading auxiliary tool is greatly improved, the reading auxiliary tool is suitable for valves in various nuclear power facilities, and a special reading tool does not need to be arranged for each type of valve. In addition, the reset process of the valve adjusting rotating handle is greatly simplified, and bad items caused by inaccurate reset are avoided. In addition, due to the fact that the device can be widely applied to various valve types, a special tool does not need to be additionally purchased for each valve, and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power facilities, in particular to a valve opening indicator for nuclear power facilities. Background Art

[0002] As a key control component, valves play a vital role in maintaining system stability and safety. Especially during maintenance, in order to ensure the personal safety of maintenance personnel, it is often necessary to make specific adjustments to the valves so that they are in a non-working state. However, after the maintenance is completed, it is difficult to accurately reset the valve to its original position.

[0003] Although there are structures in the related art that can indicate the valve opening, such as the follow-up indicator mark on the valve will align with the different readings on the external dial during the valve rotation process, thereby helping maintenance personnel to record and mark the opening readings. However, when the valve and the opening reading disk are located on different planes, it is difficult for maintenance personnel to accurately read the valve opening, and it is also impossible to accurately adjust the valve opening, and the valve adjustment accuracy is low.

[0004] Furthermore, some valves may be provided with dedicated auxiliary reading tools, but such auxiliary tools have poor universality and cannot assist in reading valves with different height differences (between the valve and the reading disk). Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a valve opening indicator for nuclear power facilities, which can solve the problems of low valve opening adjustment accuracy and poor universality of reading auxiliary tools.

[0006] The utility model provides a valve opening indicator for a nuclear power facility, which comprises:

[0007] A movable device, wherein the movable device comprises two L-shaped frames, each of the L-shaped frames comprises a first plate body and a second plate body connected at an angle, each of the first plates is provided with a movable waist hole, and each of the second plates is provided with an alignment structure; and

[0008] A fixing device, the fixing device includes two fixing bolts and two fixing nuts, the two fixing bolts are both passed through the two movable waist holes, the two fixing nuts are screwed to the two fixing bolts one by one, and the two first plates can slide relatively along the length extension direction of the movable waist holes, so that when one of the alignment structures is aligned with the valve adjustment handle at the first height, the other alignment structure can be aligned with another position at the second height.

[0009] Preferably, the alignment structure comprises an alignment indicator, which is arranged on the second plate body, and a length extension direction of the alignment indicator is consistent with an alignment direction of the alignment structure.

[0010] Preferably, the alignment structure further comprises an alignment observation hole, which is arranged on the second plate body and forms a partition at a part of the alignment indicator.

[0011] Preferably, the alignment indicator comprises an alignment ridge, the alignment ridge is arranged on the second plate body, and the length extension direction of the alignment ridge is consistent with the alignment direction of the alignment structure.

[0012] Preferably, the alignment indicator comprises an alignment groove, the alignment groove is arranged on the second plate body, and the length extension direction of the alignment groove is consistent with the alignment direction of the alignment structure.

[0013] Preferably, the alignment indicator comprises an alignment mark, the alignment mark is arranged on the second plate body, and the length extension direction of the alignment mark is consistent with the alignment direction of the alignment structure.

[0014] Preferably, the first plate body and the second plate body are an integrally formed structure; or

[0015] On one of the L-shaped frames, one end of the first plate is connected to one end of the second plate, and the angle between the first plate and the second plate is 75° to 105°; or

[0016] The bottom surfaces of the two first plates are in contact with each other, and the two second plates are in opposite directions.

[0017] Preferably, the fixing device further comprises a fixing gasket, and the two fixing gaskets are respectively sleeved on the two fixing bolts, and the two fixing gaskets are both supported on the first plate body.

[0018] Preferably, the nuclear power facility valve opening indicator is arranged on the regulating valve, the regulating valve includes a valve body and the valve adjusting handle, the valve adjusting handle is rotatably arranged on the valve body, the nuclear power facility valve opening indicator also includes a dial, the dial is fixedly arranged on the valve body, and the two alignment structures can align the valve adjusting handle and the dial respectively.

[0019] Preferably, a reading indicator is provided on the valve adjustment handle, and the reading indicator is matched with the alignment structure.

[0020] The implementation of this utility model has the following beneficial effects:

[0021] The utility model relates to a valve opening indicator for a nuclear power facility. On the valve opening indicator for the nuclear power facility, a movable device can slide relatively along the valve opening indicator to adapt and align two different height positions, and a fixing device is used to lock or release the movable device. In this way, the utility model can accurately align the opening reading of the valve adjustment handle when the valve and the opening reading disk are located in different planes, ensuring that maintenance personnel can accurately read and adjust the opening of the valve adjustment handle, thereby significantly improving the operating accuracy and efficiency of the valve adjustment handle.

[0022] Furthermore, the utility model can also adapt to valve adjustment handles of different heights, greatly improving the universality of the reading auxiliary tool, and is applicable to valves in various nuclear power facilities, without the need to equip each type of valve with a special reading tool.

[0023] In addition, the utility model can accurately record and restore the original opening setting of the valve adjustment handle, greatly simplifying the resetting process of the valve adjustment handle and avoiding adverse events caused by inaccurate resetting.

[0024] Furthermore, since the utility model can be widely applied to various valve types, there is no need to purchase additional special tools for each valve, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 It is a schematic diagram of the structure of some nuclear power facility valve opening indicators applied to regulating valves of the utility model;

[0027] Figure 2 It is another structural schematic diagram of the valve opening indicator of some nuclear power facilities of the utility model applied to the regulating valve;

[0028] Figure 3 yes Figure 2 A magnified view at point A;

[0029] Figure 4 It is a schematic diagram of the structure of some nuclear power facility valve opening indicators of the utility model;

[0030] Figure 5 It is an exploded view of some nuclear power facility valve opening indicators of the utility model. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Figure 1 and Figure 2 A nuclear power facility valve opening indicator 10 in some embodiments of the utility model is shown. The nuclear power facility valve opening indicator 10 is used to accurately measure or mark the valve opening of the nuclear power facility.

[0036] like Figure 1 and Figure 2As shown, the valve opening indicator 10 of a nuclear power facility includes a movable device 1 and a fixing device 2. The fixing device 2 is arranged on the movable device 1, and the fixing device 2 is used to lock or release the movement of the movable device 1 when necessary.

[0037] like Figures 3 to 5 As shown, the movable device 1 includes two L-shaped frames 11, each L-shaped frame 11 includes a first plate 111 and a second plate 112 connected at an angle, each first plate 111 is provided with a movable waist hole 1111, and each second plate 112 is provided with an alignment structure 1121.

[0038] It can be understood that the L-shaped frame 11 is configured to be L-shaped or approximately L-shaped. Of course, it can also be configured to be V-shaped, that is, the angle between the first plate body 111 and the second plate body 112 can be flexibly set, and the angle degree of the angle can be configured to be greater than 0° and less than 180°. It is preferred to avoid the L-shaped frame 11 being disturbed by the position of the regulating valve 20 or other external components during the measurement process.

[0039] The external dimensions of the two L-shaped frames 11 can be configured to be the same or different, that is, the length and width of the first plate 111 of the two L-shaped frames 11 can be configured to be the same or different, and the length and width of the second plate 112 of the two L-shaped frames 11 can also be configured to be the same or different. The relative positions of the two movable waist holes 1111 can be determined by the fixing device 2, thereby limiting the relative movement of the two L-shaped frames 11.

[0040] It should be noted that, under the visual operation of the operator, the alignment structure 1121 can directly align the parts that need to be aligned in the same plane height direction or other structures on the parts for alignment. The alignment structure 1121 can be configured to be defined by setting a structure with a protrusion or a recess on the second plate 112, or it can be defined by a peripheral wall structure or a limiting structure, or it can be configured to be formed by applying a coating on the second plate 112, as long as the operator can align the position that needs to be aligned on the regulating valve 20 through the alignment structure 1121.

[0041] like Figures 3 to 5 As shown, the fixing device 2 includes two fixing bolts 21 and two fixing nuts 22. The two fixing bolts 21 are both passed through two movable waist holes 1111. The two fixing nuts 22 are screwed to the two fixing bolts 21 one by one. The two first plates 111 can slide relatively along the length extension direction of the movable waist holes 1111, so that when one of the alignment structures 1121 is aligned with the valve adjustment handle 40 at the first height, the other alignment structure 1121 can be aligned with another position at the second height.

[0042] It can be understood that the two fixing bolts 21 and the two fixing nuts 22 are both prior art. The fixing bolts 21 can be configured as various bolt structures, screw structures or other specifications of threaded connectors in the prior art, and the fixing nuts 22 are correspondingly configured as various nut structures that can be threadedly connected to the fixing bolts 21.

[0043] It should be noted that by sliding and adjusting the relative positions of the two first plates 111, the relative positions of the second plates 112 can be changed accordingly, that is, the two second plates 112 can be aligned with the other structures at different height positions through their respective alignment structures 1121, wherein the valve adjustment handle 40 can be aligned through the alignment structure 1121 on one second plate 112, and another position on the regulating valve 20 can be aligned through the alignment structure 1121 on the other second plate 112. In this way, on the basis that the relative position of the valve adjustment handle 40 and one of the alignment structures 1121 is determined, the valve adjustment handle 40 rotated to different opening positions can be determined at another height position through the alignment position of the other alignment structure 1121.

[0044] Furthermore, if an opening reading structure is provided at another height position, the error caused by manually visually aligning the valve adjustment knob 40 with the opening reading structure can be eliminated, thereby improving the accuracy of the opening reading. If an opening reading structure is not provided at another height position, the operator can also mark the position manually, thereby quickly and accurately completing the opening reset of the valve adjustment knob 40.

[0045] Furthermore, even if the setting heights of the valve adjustment knobs 40 on different types of regulating valves are different, the utility model can also be adapted accordingly through the relative sliding of the two first plates 111, thereby improving the universality of the application of the tool of the utility model.

[0046] like Figures 3 to 5 As shown, in some embodiments of the nuclear power facility valve opening indicator 10, the alignment structure 1121 includes an alignment indicator 1122, which is disposed on the second plate 112, and the length extension direction of the alignment indicator 1122 is consistent with the alignment direction of the alignment structure 1121.

[0047] It can be understood that the alignment indicator 1122 is provided on the second plate 112, and its length extension direction is consistent with the alignment direction of the alignment structure 1121, so that the operator can intuitively align the valve adjustment knob 40 or other components to be measured. The alignment indicator 1122 can be a linear mark, a scale line or an embedded pointer protruding from the surface of the second plate 112, and its design is intended to provide a clear visual guide to help the user quickly locate and measure the opening of the valve.

[0048] In actual application, when the valve opening needs to be accurately measured, the operator first adjusts the relative position of the movable device 1 so that the alignment indicator 1122 of one of the alignment structures 1121 is aligned with the valve adjustment handle. Then, the position of the movable device 1 is locked by the fixing device 2 to ensure stability during the measurement process. At this time, the alignment indicator 1122 on the other alignment structure 1121 can be used to align the opening reading structure, or as a marking point for subsequent opening reset.

[0049] Furthermore, the color of the alignment indicator 1122 may be configured to form a contrast with the color of the second plate 112 to ensure that it can be clearly seen under any lighting conditions.

[0050] like Figures 3 to 5 As shown, in some embodiments of the nuclear power facility valve opening indicator 10, the alignment structure 1121 also includes an alignment observation hole 1123, which is disposed on the second plate 112, and the alignment observation hole 1123 forms a partition at a portion of the alignment indicator 1122.

[0051] It can be understood that the alignment observation hole 1123 is arranged on the second plate 112, and its position forms a partition with a partial area of ​​the alignment indicator 1122, that is, the alignment observation hole 1123 is located in a certain section of the alignment indicator 1122. In this way, not only the guiding function of the alignment indicator 1122 is retained, but also the operator is allowed to directly observe the key parts of the valve adjustment handle or other measurement targets through the alignment observation hole 1123, thereby achieving double verification and calibration.

[0052] In addition, in some implementation scenarios, the second plate 112 may cover a position that should not be shielded, and the setting of the positioning observation hole 1123 provides sufficient observation space for the operator.

[0053] like Figures 3 to 5 As shown, in some embodiments of the nuclear power facility valve opening indicator 10 , the alignment indicator 1122 includes an alignment ridge, which is disposed on the second plate 112 , and the length extension direction of the alignment ridge is consistent with the alignment direction of the alignment structure 1121 .

[0054] It can be understood that the direction in which the length of the alignment ridge extends strictly follows the alignment direction of the alignment structure 1121, ensuring that during the valve opening measurement process, the alignment ridge can accurately guide the operator to achieve precise positioning of the target component or target position (such as the valve adjustment handle).

[0055] In some embodiments of the valve opening indicator 10 for nuclear power facilities, the alignment indicator 1122 includes an alignment groove, which is disposed on the second plate 112 , and the length extension direction of the alignment groove is consistent with the alignment direction of the alignment structure 1121 .

[0056] It can be understood that the length extension direction of the alignment groove is consistent with the alignment direction of the alignment structure 1121, and its beneficial effects are similar to those of the alignment ridges, which will not be described in detail here.

[0057] In some embodiments of the valve opening indicator 10 for nuclear power facilities, the alignment indicator 1122 includes an alignment mark, which is disposed on the second plate 112 , and the length extension direction of the alignment mark is consistent with the alignment direction of the alignment structure 1121 .

[0058] It can be understood that the length extension direction of the alignment mark is consistent with the alignment direction of the alignment structure 1121, and its beneficial effects are similar to those of the alignment ridges, which will not be described in detail here.

[0059] In some embodiments of the valve opening indicator 10 for nuclear power facilities, the first plate body 111 and the second plate body 112 are an integrally formed structure.

[0060] It can be understood that the first plate body 111 and the second plate body 112 are manufactured together by an integral molding method, which can improve the strength of the connection position between the two and improve the durability of the product.

[0061] like Figure 5 As shown, in some embodiments of the valve opening indicator 10 for nuclear power facilities, on an L-shaped frame 11, one end of a first plate body 111 is connected to one end of a second plate body 112, and an angle θ between the first plate body 111 and the second plate body 112 is 75° to 105°.

[0062] It can be understood that by setting the angle θ to 75°~105°, the L-shaped frame can correspond to the edge contour of the valve adjustment handle 40, so that the relative position of the L-shaped frame 11 and the valve adjustment handle 40 can be further determined, thereby further improving the opening detection accuracy and opening reset accuracy of the utility model.

[0063] like Figure 3 and Figure 4 As shown, in some embodiments of the nuclear power facility valve opening indicator 10, the bottom surfaces of the two first plates 111 are in contact with each other, and the two second plates 112 are in opposite directions.

[0064] It can be understood that the two second plates 112 are oriented in opposite directions, which can prevent the two second plates 112 from interfering with each other during the measurement process, thereby improving the convenience of use.

[0065] like Figures 3 to 5As shown, in some embodiments of the nuclear power facility valve opening indicator 10 , the fixing device 2 further includes a fixing gasket 23 , and the two fixing gaskets 23 are respectively sleeved on the two fixing bolts 21 , and the two fixing gaskets 23 are both supported on the first plate 111 .

[0066] It can be understood that the main function of the fixing gasket 23 is to provide a uniform pressure-bearing surface between the fixing bolt 21 and the first plate 111 to prevent damage or deformation of the plate due to excessive local pressure. In addition, the fixing gasket 23 can also play a certain anti-loosening effect, ensuring that the fixing bolt 21 will not loosen easily under long-term use or vibration environment, and maintaining the stable fixed state of the indicator.

[0067] like Figure 1 and Figure 2 As shown, in some embodiments of the nuclear power facility valve opening indicator 10, the nuclear power facility valve opening indicator 10 is arranged on the regulating valve 20, the regulating valve 20 includes a valve body 30 and a valve adjustment handle 40, the valve adjustment handle 40 is rotatably arranged on the valve body 30, the nuclear power facility valve opening indicator 10 also includes a dial 3, the dial 3 is fixedly arranged on the valve body 30, and the two alignment structures 1121 can align the valve adjustment handle 40 and the dial 3 respectively.

[0068] It can be understood that the operator adjusts the opening of the regulating valve 20 by rotating the valve adjustment knob 40, thereby controlling the flow rate or pressure of the fluid. For example, if the regulating valve is an air valve, the air flow rate can be adjusted accordingly by rotating the valve adjustment knob 40. When the valve adjustment knob 40 is rotated, the operator can intuitively judge and record the current opening of the valve by observing the relative position of the alignment structure 1121 and the scale line on the dial 3, thereby achieving precise control and adjustment.

[0069] The alignment structure 1121 can not only directly contact the valve adjustment handle 40 to ensure that the relative position of the indicator and the valve is determined, but also accurately indicate the scale value on the dial 3.

[0070] In some embodiments of the nuclear power facility valve opening indicator 10 , a reading indicator is provided on the valve adjustment knob 40 , and the reading indicator is matched with the alignment structure 1121 .

[0071] It can be understood that the appearance of the reading indicator can be a prominent arrow, a pointer or a mark with a certain contrast color, and its design should ensure that it can be clearly seen in any situation.

[0072] In practical applications, the reading indicator may be connected to the valve regulating handle 40 by welding, riveting or screwing, or may be formed by coating to ensure its stability and reliability during valve operation.

[0073] The implementation of this utility model has the following beneficial effects:

[0074] The utility model relates to a valve opening indicator for a nuclear power facility. On the valve opening indicator for the nuclear power facility, a movable device can slide relatively along the valve opening indicator to adapt and align two different height positions, and a fixing device is used to lock or release the movable device. In this way, the utility model can accurately align the opening reading of the valve adjustment handle when the valve and the opening reading disk are located in different planes, ensuring that maintenance personnel can accurately read and adjust the opening of the valve adjustment handle, thereby significantly improving the operating accuracy and efficiency of the valve adjustment handle.

[0075] Furthermore, the utility model can also adapt to valve adjustment handles of different heights, greatly improving the universality of the reading auxiliary tool, and is applicable to valves in various nuclear power facilities, without the need to equip each type of valve with a special reading tool.

[0076] In addition, the utility model can accurately record and restore the original opening setting of the valve adjustment handle, greatly simplifying the resetting process of the valve adjustment handle and avoiding adverse events caused by inaccurate resetting.

[0077] Furthermore, since the utility model can be widely applied to various valve types, there is no need to purchase additional special tools for each valve, thereby reducing maintenance costs.

[0078] 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.

[0079] 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 valve opening indicator for a nuclear power facility, characterized in that: include: A movable device (1), the movable device (1) comprising two L-shaped frames (11), each of the L-shaped frames (11) comprising a first plate (111) and a second plate (112) connected at an angle, each of the first plates (111) being provided with a movable waist hole (1111), and each of the second plates (112) being provided with an alignment structure (1121); and A fixing device (2), the fixing device (2) comprising two fixing bolts (21) and two fixing nuts (22), the two fixing bolts (21) are both passed through the two movable waist holes (1111), the two fixing nuts (22) are screwed to the two fixing bolts (21) in a one-to-one correspondence, and the two first plates (111) can slide relatively along the length extension direction of the movable waist holes (1111), so that when one of the alignment structures (1121) is aligned with the valve adjustment handle (40) at a first height, the other alignment structure (1121) can be aligned with another position at a second height.

2. The valve opening indicator for nuclear power facilities according to claim 1, characterized in that: The alignment structure (1121) comprises an alignment indicator (1122), wherein the alignment indicator (1122) is arranged on the second plate body (112), and a length extension direction of the alignment indicator (1122) is consistent with an alignment direction of the alignment structure (1121).

3. The valve opening indicator of a nuclear power facility according to claim 2, characterized in that: The alignment structure (1121) further comprises an alignment observation hole (1123), wherein the alignment observation hole (1123) is arranged on the second plate body (112), and the alignment observation hole (1123) forms a partition at a part of the alignment indicator (1122).

4. The valve opening indicator for nuclear power facilities according to claim 2 or 3, characterized in that: The alignment indicator (1122) comprises an alignment ridge, the alignment ridge is arranged on the second plate body (112), and the length extension direction of the alignment ridge is consistent with the alignment direction of the alignment structure (1121).

5. The valve opening indicator for nuclear power facilities according to claim 2 or 3, characterized in that: The alignment indicator (1122) comprises an alignment groove, which is arranged on the second plate body (112), and the length extension direction of the alignment groove is consistent with the alignment direction of the alignment structure (1121).

6. The valve opening indicator for nuclear power facilities according to claim 2 or 3, characterized in that: The alignment indicator (1122) comprises an alignment mark, and the alignment mark is arranged on the second plate body (112), and the length extension direction of the alignment mark is consistent with the alignment direction of the alignment structure (1121).

7. The valve opening indicator for nuclear power facilities according to claim 1, characterized in that: The first plate body (111) and the second plate body (112) are an integrally formed structure; or On one of the L-shaped frames (11), one end of the first plate (111) is connected to one end of the second plate (112), and an angle between the first plate (111) and the second plate (112) is 75° to 105°; or The bottom surfaces of the two first plates (111) are in contact with each other, and the two second plates (112) are in opposite directions.

8. The valve opening indicator for nuclear power facilities according to claim 1, characterized in that: The fixing device (2) further comprises a fixing gasket (23), wherein the two fixing gaskets (23) are respectively sleeved on the two fixing bolts (21), and the two fixing gaskets (23) are both supported on the first plate body (111).

9. The valve opening indicator for nuclear power facilities according to claim 1, characterized in that: The nuclear power facility valve opening indicator is arranged on a regulating valve (20), the regulating valve (20) comprises a valve body (30) and the valve regulating handle (40), the valve regulating handle (40) is rotatably arranged on the valve body (30), the nuclear power facility valve opening indicator also comprises a dial (3), the dial (3) is fixedly arranged on the valve body (30), and the two alignment structures (1121) can align the valve regulating handle (40) and the dial (3) respectively.

10. The valve opening indicator for nuclear power facilities according to claim 1 or 9, characterized in that: The valve adjustment handle (40) is provided with a reading indicator, and the reading indicator is adapted to the alignment structure (1121).

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