Lamp holder for detecting sealing performance of ball valve by adopting light transmission method

Abstract

The utility model discloses a lamp holder for detecting the sealing performance of a ball valve by adopting a light transmission method, which comprises a base, an upper cover and a support disc, and the base comprises a bottom wall and a surrounding wall; the upper cover is detachably connected with the base, the upper cover comprises an annular main body, an annular supporting wall is arranged on the inner wall of the annular main body, an inner cavity of the annular main body is defined into a first containing cavity and a second containing cavity by the annular supporting wall, and the first containing cavity is arranged towards the mounting cavity; the supporting disc comprises an annular part, a first protruding part and a second protruding part, the second protruding part is used for stretching into the second containing cavity and abutting against the annular supporting wall, and the first protruding part is used for stretching into a valve hole of a valve seat of the ball valve. The base, the upper cover and the supporting disc are detachably arranged, so that any damaged structure can be replaced and repaired, the use cost can be reduced, in addition, supporting discs of different sizes can be selected according to valve holes of valve seats of ball valves of different specifications, and the practicability and applicability of the lamp holder for detecting the sealing performance of the ball valves through the light transmission method can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of the upper installation type ball valve adopts the light transmission method to detect the surface roughness of valve seat sealing surface, especially to a kind of lamp holder for detecting the ball valve tightness using light transmission method. BACKGROUND

[0002] Ball valve is the important connecting component in nuclear power plant, can control the on-off of medium in pipeline by operating handle, thus the sealing performance of ball valve itself can seriously affect pipeline operation safety, when the leakage of ball valve itself structure occurs, system function stability will be affected. Figure 1 As shown in the figure, ball valve generally includes valve cover, valve body, handle, valve seat, valve ball and valve stem etc., to ensure that the ball in ball valve can rotate smoothly and maintain good sealing performance, thus the surface roughness precision requirement of valve seat sealing surface of ball valve is higher.Nuclear power plant staff will regularly overhaul valve, and sealing surface detection is an important link, currently commonly used ball valve sealing surface detection method adopts light transmission method to qualitatively detect the fit of ball valve seat sealing surface and valve ball, this method mainly is under dim conditions, detection lamp holder is placed under valve seat, valve ball is placed above valve seat, press down with force, personnel observe whether there is light leakage at the fit of valve ball and sealing surface, if light leakage, remove valve seat and continue to grind sealing surface, if no light leakage, consider that the fit is good. Currently, the detection lamp holder is mostly integral structure, if some components of the detection lamp holder are damaged, the whole detection lamp holder may be scrapped, the use cost is higher, and the detection lamp holder can be generally applied to only one specification of ball valve, and the applicability is insufficient. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem in, provide a kind of lamp holder for detecting the ball valve tightness using light transmission method.

[0004] The utility model solves the technical problem and adopts the technical scheme that: construct a kind of lamp holder for detecting the ball valve tightness using light transmission method, including base, upper cover and support disc, the base is cylindrical structure, the base includes bottom wall and the connecting of the periphery of bottom wall surrounding wall, the bottom wall and the surrounding wall are formed together to install the installation cavity for scattering lamp;

[0005] The upper cover is detachably connected with the base, the upper cover includes annular body, the inner wall of annular body is equipped with annular support wall, the annular support wall defines the first containing cavity and the second containing cavity in the inner cavity of annular body, the first containing cavity is towards the installation cavity and is arranged;

[0006] The support disc comprises a ring part, a first annular protrusion extending upwardly from the upper side of the through hole of the ring part, and a second annular protrusion extending downwardly from the lower side of the through hole of the ring part, the second annular protrusion being used for extending into the second accommodating cavity and abutting against the annular support wall, and the first annular protrusion being used for extending into the valve hole of the valve seat of the ball valve.

[0007] In some embodiments, the bottom wall is provided with a plurality of mounting holes for mounting the scattering lamp.

[0008] In some embodiments, the surrounding wall is provided with at least one slot.

[0009] In some embodiments, the outer periphery of the surrounding wall is provided with a plurality of first connecting parts in the form of columns.

[0010] The outer periphery of the annular body is provided with a plurality of second connecting parts, and the first connecting parts and the second connecting parts are connected by fasteners.

[0011] In some embodiments, the first connecting parts are provided with first connecting holes, the second connecting parts are provided with second connecting holes, and the fasteners connect the first connecting holes and the second connecting holes.

[0012] In some embodiments, the upper and lower surfaces of the first connecting parts are flush with the upper and lower surfaces of the surrounding wall.

[0013] In some embodiments, the annular support wall is provided with a clamping groove, and the second protrusion is inserted into the clamping groove.

[0014] In some embodiments, the base, the upper cover and the support disc are coaxially arranged.

[0015] In some embodiments, the base is an integral structure, the upper cover is an integral structure, and the support disc is an integral structure.

[0016] In some embodiments, the base, the upper cover and the support disc are all metal parts.

[0017] The lamp holder for detecting the sealing performance of the ball valve by the light transmission method has the following beneficial effects: the base, the upper cover and the support disc are separately arranged, so that any structure can be replaced and repaired when damaged, and the use cost is reduced; in addition, the support disc and the upper cover are separately connected, so that support discs with different sizes can be selected according to the valve holes of the valve seats of ball valves with different specifications, for example, the inner and outer diameters of the upper first protrusions of support discs with different specifications are different, so that the practicability and applicability of the lamp holder for detecting the sealing performance of the ball valve by the light transmission method are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the present application, the present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0019] Figure 1 is a structural schematic diagram of a ball valve in the related art;

[0020] Figure 2 is an exploded view of the lamp holder for detecting the sealing performance of the ball valve by the light transmission method in some embodiments of the present application;

[0021] Figure 3 is an application schematic diagram of the lamp holder for detecting the sealing performance of the ball valve by the light transmission method in some embodiments of the present application;

[0022] Figure 4 is a structural schematic diagram of the base in some embodiments of the present application;

[0023] Figure 5 is a structural schematic diagram of the upper cover in some embodiments of the present application;

[0024] Figure 6 is a structural schematic diagram of the support disc in some embodiments of the present application;

[0025] Figure 7 is a sectional view of the support disc in some embodiments of the utility model. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation manners of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical scheme, and do not indicate that the indicated device or element must have a particular direction, so it cannot be understood as a limitation on the utility model.

[0027] It should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the following description, specific details are presented such as specific system structures, technologies, etc. in order to facilitate the understanding of the embodiments of the utility model, but it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details hindering the description of the utility model.

[0029] Referring to Figures 2 to 7 The utility model discloses a lamp holder for detecting the sealing property of ball valve by light transmission method, which comprises a base 10, an upper cover 20 and a support disc 30.

[0030] The base 10 has a cylindrical structure, for example, the base 10 is generally cylindrical. The base 10 includes a bottom wall 11 and a surrounding wall 12 connected to the periphery of the bottom wall 11. The bottom wall 11 and the surrounding wall 12 together form a mounting cavity 10a for mounting the diffuser lamp.

[0031] The top cover 20 is detachably connected to the base 10. The top cover 20 includes an annular body 21, which can be a generally circular cylindrical structure. The inner and outer diameters of the annular body 21 are similar to the inner and outer diameters of the surrounding wall 12. The inner wall of the annular body 21 is provided with an annular support wall 22, which defines a first receiving cavity 20a and a second receiving cavity 20b in the inner cavity of the annular body 21. The first receiving cavity 20a is disposed facing the mounting cavity 10a.

[0032] The support plate 30 includes an annular portion 31, which is generally circular. The outer diameter of the annular portion 31 is larger than the outer diameter of the base 10 and the upper cover 20. An annular first protrusion 32 extends upward along the upper side of the through hole of the annular portion 31. The first protrusion 32 is also generally circular. An annular second protrusion 33 extends downward along the lower side of the through hole of the annular portion 31. The second protrusion 33 is also generally circular. The second protrusion 33 is used to extend into the second receiving cavity 20b and abut against the annular support wall 22. The first protrusion 32 is used to extend into the valve hole of the valve seat 100 of the ball valve (in conjunction with...). Figure 3 As shown), to prevent the valve seat 100 from falling off during the testing process, different models of support plates 30 can be replaced for ball valves of different specifications as needed.

[0033] The base 10, the top cover 20, and the support plate 30 are detachable from each other, so any damaged structure can be replaced and repaired, reducing the cost of use. In addition, the support plate 30 and the top cover 20 are detachably connected, so different sizes of support plates 30 can be selected according to the valve holes of the valve seat 100 of different specifications of ball valves. For example, the inner and outer diameters of the upper first protrusion 32 of different specifications of support plates 30 are different, which can improve the practicality and applicability of the lamp holder for testing the sealing performance of ball valves by light transmission method.

[0034] like Figure 4 As shown, the bottom wall 11 is provided with a plurality of mounting holes 111 for mounting the diffuser lamp. The mounting holes 111 can be screw holes, which can be connected to the diffuser lamp by bolts or screws, so that the diffuser lamp is fixed in the base 10 and is not easy to shake.

[0035] like Figure 4 As shown, the enclosure 12 is provided with at least one slot 121, which can be elongated. The slot 121 can be used to allow the charging cable of the diffuser to pass through or to expose the charging interface of the diffuser for charging.

[0036] Combination Figure 4 and Figure 5 As shown, in some embodiments, the outer periphery of the enclosure 12 is provided with a plurality of first connecting portions 13 at intervals, and the first connecting portions 13 are columnar. The outer periphery of the annular body 21 is provided with a plurality of second connecting portions 23 at intervals, and the first connecting portions 13 and the second connecting portions 23 are connected by fasteners. Preferably, the number of the first connecting portions 13 is three, and the three first connecting portions 13 are evenly distributed to improve the connection stability. The upper and lower surfaces of the first connecting portions 13 are flush with the upper and lower surfaces of the enclosure 12, so that the first connecting portions 13 can provide support, thereby improving the support stability of the base 10. The upper and lower surfaces of the second connecting portions 23 are flush with the upper and lower surfaces of the annular body 21, or the second connecting portions 23 can be located near the bottom of the outer periphery of the annular body 21, which is not specifically limited here.

[0037] Combination Figure 4 and Figure 5 As shown, in some embodiments, the first connecting portion 13 is provided with a first connecting hole 131, and the second connecting portion 23 is provided with a second connecting hole 231. The fastener connects the first connecting hole 131 and the second connecting hole 231. Preferably, both the first connecting hole 131 and the second connecting hole 231 are threaded holes. The fastener may include a bolt or a screw.

[0038] like Figure 5 As shown, the annular support wall 22 is provided with a groove 221. The groove 221 is annular, and the second protrusion 33 is inserted into the groove 221, making the fit between the support plate 30 and the upper cover 20 more stable and less prone to displacement. Consequently, when the valve seat 100 is installed on the support plate 30, it is more stable. In addition, the second protrusion 33 is inserted into the groove 221, making it less likely for light to leak at the fit between the support plate 30 and the upper cover 20.

[0039] In some embodiments, the base 10, the top cover 20, and the support plate 30 are coaxially arranged, which can improve structural stability.

[0040] In some embodiments, the base 10, the top cover 20, and the support plate 30 are all integral structures. The base 10, the top cover 20, and the support plate 30 can all be integrally formed in a mold, resulting in better stability of the integral structure.

[0041] In some embodiments, the base 10, the upper cover 20 and the support disc 30 are all metal pieces. Preferably, the base 10, the upper cover 20 and the support disc 30 can be made of brass material, which is softer than the valve seat 100 and is not easy to damage the valve seat 100. Of course, the base 10, the upper cover 20 and the support disc 30 can also be made of other suitable metal materials according to actual needs, which are not limited here.

[0042] The lamp holder for detecting the sealing performance of the ball valve by the light transmission method is applied as follows: under dim conditions, the valve seat 100 is placed on the support disc 30, the valve ball 200 is placed above the valve seat 100, and the valve ball 200 is pressed downward with force, and personnel observe whether there is light leakage at the bonding position of the valve ball 200 and the sealing surface. If there is light leakage, the valve seat 100 is removed and the sealing surface is further ground. If there is no light leakage, it is considered that the bonding is good.

[0043] The lamp holder for detecting the sealing performance of the ball valve by the light transmission method is simple in structure, convenient to operate, and excellent in detection effect. It can be adapted to different specifications of ball valves. One lamp holder can detect multiple ball valves through different specifications of support discs 30, which can improve work efficiency.

[0044] It can be understood that the above embodiments only express the preferred embodiments of the present application, which are described in detail and specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which belong to the protection scope of the present application. Therefore, any equivalent transformation and modification within the scope of the claims of the present application should belong to the scope of the claims of the present application.

Claims

1. A lamp holder for detecting the tightness of a ball valve using a light transmission method, characterized in that, The application relates to a diffuser lamp base, which comprises a base (10), an upper cover (20) and a supporting disc (30), wherein the base (10) is a cylindrical structure, the base (10) comprises a bottom wall (11) and a surrounding wall (12) connected with the periphery of the bottom wall (11), and the bottom wall (11) and the surrounding wall (12) jointly form a mounting cavity (10a) for mounting a diffuser lamp; the upper cover (20) is detachably connected with the base (10), the upper cover (20) comprises a ring-shaped main body (21), the inner wall of the ring-shaped main body (21) is provided with a ring-shaped supporting wall (22), the ring-shaped supporting wall (22) divides the inner cavity of the ring-shaped main body (21) into a first containing cavity (20a) and a second containing cavity (20b), and the first containing cavity (20a) is arranged towards the mounting cavity (10a); the supporting disc (30) comprises a ring-shaped part (31), the upper side of the through hole of the ring-shaped part (31) extends upwards and is provided with a ring-shaped first protruding part (32), the lower side of the through hole of the ring-shaped part (31) extends downwards and is provided with a ring-shaped second protruding part (33), the second protruding part (33) is used for extending into the second containing cavity (20b) and abutting against the ring-shaped supporting wall (22), and the first protruding part (32) is used for extending into the valve hole of the valve seat of a ball valve.

2. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 1, wherein The bottom wall (11) is provided with a plurality of mounting holes (111) for mounting the diffuser lamp.

3. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 1, wherein The surrounding wall (12) is provided with at least one slot (121).

4. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 1, wherein The outer periphery of the surrounding wall (12) is provided with a plurality of first connecting parts (13), and the first connecting parts (13) are columnar; the outer periphery of the ring-shaped main body (21) is provided with a plurality of second connecting parts (23), and the first connecting parts (13) and the second connecting parts (23) are connected through fasteners.

5. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 4, wherein The first connecting parts (13) are provided with first connecting holes (131), the second connecting parts (23) are provided with second connecting holes (231), and the fasteners connect the first connecting holes (131) and the second connecting holes (231).

6. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 4, wherein The upper and lower surfaces of the first connecting parts (13) are flush with the upper and lower surfaces of the surrounding wall (12).

7. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to claim 1, wherein The ring-shaped supporting wall (22) is provided with a clamping groove (221), and the second protruding part (33) is inserted into the clamping groove (221).

8. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to any one of claims 1 to 7, characterized in that, The base (10), the upper cover (20) and the supporting disc (30) are coaxially arranged.

9. The lamp holder for detecting the tightness of a ball valve using a light transmission method according to any one of claims 1 to 7, wherein The base (10) is an integral structure, the upper cover (20) is an integral structure, and the supporting disc (30) is an integral structure.

10. The lamp holder for detecting the tightness of a ball valve by the light transmission method according to any one of claims 1 to 7, wherein The base (10), the upper cover (20) and the supporting disc (30) are metal pieces.

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