Gate valve clamping device

Abstract

The invention is suitable for the technical field of valve machining and maintenance, and provides a gate valve clamping device which comprises a base, a wedge block arranged on the base and a plurality of fasteners arranged on the base, the wedge block is provided with a first surface facing the base and a second surface facing a gate valve, and an included angle is formed between the first surface and the second surface. One end of each fastener is used for being fixed to the base, and the other end of each fastener is used for abutting against the surface, away from one side of the base, of at least one part of the gate valve and avoiding a to-be-machined face. By means of the wedge block and by setting the inclination degree of the second surface relative to the first surface, the second surface is matched with the inclination degree of the side, facing the valve seat, of the gate valve relative to the radial plane of the valve seat, and therefore the sealing face can be kept in the direction parallel to the working surface; the gate valve is kept on the base at a needed angle, and when the sealing face is machined, the machining accuracy of the sealing face can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of valve processing and maintenance, and in particular to a gate valve clamping device. Background Art

[0002] In the field of pipeline valve technology, the wedge gate valve has a simple sealing structure and reliable performance. Therefore, as an important system isolation boundary, the wedge gate valve is widely used in nuclear power plant systems. In order to ensure the reliable sealing performance of the valve, the valve disc of the wedge gate valve adopts a "V" shaped structure design, such as Figure 1 and Figure 2 As shown in the figure, there is a sealing surface on each side of the valve disc, and the sealing surface is usually a hard alloy cladding layer to ensure hardness and wear resistance. Due to the manufacturer's manufacturing process, complex on-site operating conditions, etc., cracks may appear on the valve disc sealing surface, causing valve leakage and affecting the stable operation of the unit. During the valve maintenance work, the sealing surface of the alloy cladding layer needs to be removed by turning, and then repaired by welding to restore the valve sealing performance.

[0003] Since the disc of the wedge gate valve is irregular in shape, the disc needs to be securely fixed during the turning removal and turning repair process after surfacing to ensure that the sealing surface after turning maintains the required angle. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a technical solution that can reliably fix a gate valve at a required angle.

[0005] The embodiment of the present application is implemented as follows: a gate valve clamping device includes: a base, a wedge block arranged on the base, and a plurality of fasteners arranged on the base; the wedge block has a first surface facing the base, and a second surface facing the gate valve, the first surface and the second surface are arranged at an angle, one end of each of the fasteners is used to be fixed on the base, and the other end of each of the fasteners is used to abut against a surface of at least a part of the gate valve that is away from the base and avoids the surface to be processed.

[0006] In one embodiment, a recessed groove is provided on the wedge block, and the recessed groove penetrates the wedge block along the axial direction of the base; the gate valve clamping device also includes a first locking piece, one end of which is fixed to the base, and the other end of the first locking piece is located in the recessed groove.

[0007] In one embodiment, the wedge block further has a third surface connected to the first surface and the second surface at one end away from each other, the sink groove is connected to the third surface, and one end of the first locking member is detachably fixed to the base.

[0008] In one embodiment, the gate valve includes guide rail portions located on both sides of the first direction thereof, and the guide rail portions are provided with guide grooves along the second direction, and the first direction and the second direction are both perpendicular to the axial direction of the base; the multiple fasteners include at least two first fasteners, and the other end of the first fastener is provided with a first limit plate, and the first limit plate is used to abut against the surface of the guide rail portion away from the base.

[0009] In one embodiment, the first fastener includes a first fastening plate and a second locking member, the first fastening plate is provided with the first limiting plate at one end facing away from the base, the first limiting plate is provided with a second threaded hole penetrating axially along the base, and the second locking member can engage with the two threaded holes.

[0010] In one embodiment, a second limiting plate protruding away from the gate valve is provided at one end of the first fastening plate facing the base, a third threaded hole is provided on the base, and the first fastener also includes a third locking member, which passes through the second limiting plate and engages with the third threaded hole.

[0011] In one embodiment, a first through hole is provided on the second limiting plate, and the first through hole penetrates to an end surface of the first limiting plate on a side away from the gate valve.

[0012] In one embodiment, the gate valve includes two valve flaps, and the sides of the valve flaps facing away from each other respectively have the surface to be processed; the sides of the valve flaps facing each other are provided with a connecting portion, and the periphery of the sides of the valve flaps facing each other forms a gap around the connecting portion; the multiple fasteners include at least one second fastener, and one of the valve flaps close to the base is located between the base and the end of the second fastener facing away from the base.

[0013] In one embodiment, at least one of the second fasteners is arranged at one end of the valve flap along the second direction, and the second fastener includes a first threaded column, a support column, a fourth locking member and a first pressure plate, the first threaded column and the support column are both arranged on the base, the first pressure plate is provided with a second through hole capable of passing the first threaded column, and the end of the support column facing away from the base is used to abut against the surface of the first pressure plate facing the base; the fourth locking member is arranged on the side of the first pressure plate facing away from the base and can engage with the first threaded column.

[0014] In one embodiment, the other end of the valve flap along the second direction is also provided with an avoidance hole that penetrates the base along the axial direction and is connected to the outer edge of the valve flap, and at least one second fastener includes a second threaded column, a second pressure plate and a fifth locking member, the second threaded column is arranged on the base, and the second pressure plate is provided with a third through hole that can pass through the second threaded column, and the fifth locking member is arranged on the side of the second pressure plate away from the base and can engage with the second threaded column.

[0015] The gate valve clamping device provided in the embodiment of the present application has the following beneficial effects: The gate valve clamping device provided in the embodiment of the present application has a wedge block whose second surface is inclined relative to the first surface. By setting the inclination degree of the second surface relative to the first surface, it is adapted to the inclination degree of the side of the gate valve facing the valve seat relative to the radial plane of the valve seat, thereby allowing the sealing surface to be maintained in a direction parallel to the working surface. Furthermore, by restricting at least part of the surface of the valve seat through multiple fasteners, the gate valve is maintained on the base at a required angle, and thus, when the sealing surface is processed, the processing accuracy of the sealing surface can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural diagram of the gate valve; Figure 2 It is a schematic diagram of the side structure of the gate valve; Figure 3 It is a schematic diagram of the three-dimensional structure of the gate valve clamping device provided in an embodiment of the present application; Figure 4 is a schematic diagram of the exploded structure of the gate valve clamping device provided in an embodiment of the present application; Figure 5 is a schematic diagram of the side structure of the gate valve clamping device provided in an embodiment of the present application; Figure 6 is a schematic cross-sectional structure diagram of a wedge block in a gate valve clamping device provided in an embodiment of the present application; Figure 7 It is a three-dimensional angle schematic diagram of the gate valve clamping device and the gate valve assembly provided by the embodiment of the present application; Figure 8 It is a schematic diagram from a side view of the gate valve clamping device and the gate valve assembly provided in an embodiment of the present application.

[0018] The meanings of the marks in the figure are: 91-gate valve, 910-sealing surface, 911-valve disc, 912-connecting part, 913-gap, 914-guide rail part, 9140-guide groove, 915-avoidance hole; 92-valve seat, 920-end face, 93-pipeline; 100-gate valve clamping device; 1-base, 10-working surface, 11-first threaded hole, 13-third threaded hole; 2-wedge block, 20-sink, 201-first section, 202-second section, 203-step surface, 21-first surface, 22-second surface, 23-third surface; 3- Fasteners; 31-first fastener, 311-first fastening plate, 312-first limiting plate, 3120-second threaded hole, 313-second limiting plate, 3130-first through hole, 314-connecting plate, 315-second locking piece, 316-third locking piece; 32 - second fastener, 321 - first threaded column, 322 - support column, 323 - first pressing plate, 3230 - second through hole, 324 - fourth locking piece; 325 - second threaded column, 326 - second pressing plate, 3260 - third through hole, 327 - fifth locking piece; 41-first locking member; S- radial plane, X- axial direction, Y- first direction, Z- second direction. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly or indirectly fixed or disposed on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0022] See also Figure 1 and Figure 2 As shown, the gate valve 91 is used to be arranged between two pipes 93. Specifically, a valve seat 92 is arranged between the two sides of the pipes 93 that are close to each other, and the gate valve 91 is movably arranged in the valve seat 92. The side of the gate valve 91 facing the valve seat 92 is respectively provided with a sealing surface 910 in a closed ring shape, which is used to be sealed and connected with the end surface 920 of the valve seat 92 facing the gate valve 91 ( Figure 2 In the embodiment, the sealing surface 910 of the gate valve 91 and the end surface 920 of the valve seat 92 are overlapped to cut off the fluid between the two pipes 93 and the valve seat 92. When the gate valve 91 moves along the radial direction of the pipe 93, the sealing surface 910 and the end surface 920 of the gate valve 91 are separated, so that the pipes 93 on both sides are connected and the fluid can pass through.

[0023] As the gate valve 91 is used, the sealing surface 910 may be deformed or worn, and the sealing surface 910 needs to be processed, such as turned and re-welded, to restore its surface morphology so that the sealing surface 910 can form a seal with the end face 920 of the valve seat 92 again.

[0024] The embodiment of the present application provides a gate valve clamping device 100 for holding a gate valve 91 at a desired position so as to process a sealing surface 910 according to a specific processing position.

[0025] Specifically, Figure 2 As shown, on the surfaces of the two opposite sides of the gate valve 91, the sealing surface 910 is protruding, and the other surfaces are relatively recessed. During the use of the gate valve 91, the sealing surface 910 may crack, be partially worn, etc., while the other surface substrates may remain unchanged. Therefore, when the gate valve 91 is clamped to perform processing such as turning on the sealing surface 910, the position of the sealing surface 910 on the surfaces of the two opposite sides of the gate valve 91 is used as a reference. For example, the partial area surrounded by the sealing surface 910 can be used as a reference, or the part outside the sealing surface 910 can be used as a reference.

[0026] See also Figure 1 As shown, the two sides of the gate valve 91 facing the valve seat 92 are inclined relative to the axial direction X of the valve seat 92. Therefore, when clamping and fixing the gate valve 91, in order to ensure that the inclined sealing surface 910 can be processed evenly, the gate valve clamping device 100 needs to be adapted to the inclined patterns on both sides of the gate valve 91.

[0027] See also Figure 3 , Figure 4 and Figure 5As shown, the gate valve clamping device 100 provided in the embodiment of the present application includes a base 1, a wedge block 2 arranged on the base 1, and a plurality of fasteners 3 arranged on the base 1. The base 1 is used to be fixedly connected to a processing device, such as a machining device, and to perform rotational motion. Here, the surface of the base 1 used to support the gate valve 91 is used as its working surface 10, and the direction perpendicular to the working surface 10 is the axial direction X of the base 1. The wedge block 2 is arranged on the working surface 10 of the base 1, please refer to Figure 6 As shown, the wedge block 2 has a first surface 21 facing the base 1, and a second surface 22 facing the gate valve 91, and the first surface 21 and the second surface 22 are set at an angle; one end of a plurality of fasteners 3 is used to fix the base 1, and the other end of each fastener 3 is used to abut against the surface of at least a portion of the gate valve 91 that is away from the base 1 and avoids the surface to be processed, and the surface to be processed is the above-mentioned sealing surface 910.

[0028] The gate valve clamping device 100 provided in the embodiment of the present application uses a wedge block 2 and a plurality of fasteners 3 to cooperate. Since the second surface 22 of the wedge block 2 is inclined relative to the first surface 21, the inclination of the second surface 22 relative to the first surface 21 is set to adapt to the inclination of the side of the gate valve 91 facing the valve seat 92 relative to the radial plane S of the valve seat 92 (please refer to Figure 2 As shown in FIG. 1 ), the sealing surface 910 can be kept in a position parallel to the working surface 10. Furthermore, by limiting at least part of the surface of the gate valve 91 by a plurality of fasteners 3, the gate valve 91 is kept on the base 1 at a desired angle, and thus, when the sealing surface 910 is processed, the processing accuracy of the sealing surface 910 can be ensured.

[0029] Here, the axial direction X of the valve seat 92 is theoretically set to coincide with the central axis of the sealing surface 910. In practical applications, according to the processing error of the base 1, the installation error of the base 1 on the machining equipment, etc., a certain deviation is allowed between the axial direction X of the base 1 and the axial direction X of the valve seat 92. No specific limitation is made here.

[0030] It is understandable that in some embodiments, in the axial direction X of the base 1 , the other end of each fastener 3 should not be higher than the sealing surface 910 to avoid interfering with the processing of the sealing surface 910 .

[0031] Among them, the first surface 21 of the wedge block 2 can be against the working surface 10 of the base 1. Therefore, the angle of the second surface 22 relative to the working surface 10 is set to adapt to the sealing surface 910 so that the sealing surface 910 can be parallel to the working surface 10 of the base 1 after processing.

[0032] In a specific embodiment, the angle of the first surface 21 relative to the first surface 21 is designed according to the type of the gate valve 91, etc. For example, the angle of the side of the gate valve 91 facing the valve seat 92 relative to the radial plane S of the valve seat 92 is 10°, and the angle of the second surface 22 relative to the first surface 21 is 10°. For example, the angle of the side of the gate valve 91 facing the valve seat 92 relative to the radial plane S of the valve seat 92 is 5°, and the angle of the second surface 22 relative to the first surface 21 is 5°. More examples are not given.

[0033] See also Figure 3 , Figure 4 and Figure 6 As shown, the wedge block 2 is provided with a sink 20, which penetrates the wedge block 2 along the axial direction X of the base 1, that is, penetrates and connects the first surface 21 and the second surface 22; the gate valve clamping device 100 also includes a first locking member 41, one end of which is fixed to the base 1, and the other end of the first locking member 41 is located in the sink 20. The purpose of this arrangement is that the sink 20 can hide the other end of the first locking member 41, so as to prevent the other end of the first locking member 41 from protruding from the second surface 22 and interfering with the angle adaptation between the wedge block 2 and the gate valve 91. Please refer to Figure 8 shown.

[0034] Specifically, see Figure 6 As shown, the sink 20 is a stepped groove, the portion close to the base 1 is the first section 201, and the portion away from the base 1 is the second section 202. The inner dimension of the first section 201 is smaller than the inner dimension of the second section 202. The second section 202 is used to accommodate the other end of the first locking member 41, and the step surface 203 formed between the first section 201 and the second section 202 is used to limit the other end of the first locking member 41, so that the other end of the first locking member 41 presses the step surface 203 to fix the wedge block 2 on the base 1.

[0035] In some cases, after the gate valve 91 has been used for a certain period of time, the angle of the side of the gate valve 91 facing the valve seat 92 relative to the radial plane S of the valve seat 92 may be slightly reduced, such as reduced to 9.5°, and the angle of the second surface 22 relative to the first surface 21 may be set to be greater than or equal to 9.5° according to the situation. The purpose of such setting is that the angle of the first surface 21 relative to the first surface 21 is set to be equal to or slightly greater than the angle of the side of the gate valve 91 facing the valve seat 92 relative to the radial plane S of the valve seat 92, and then, by adjusting the position of the wedge-shaped block 2 on the working surface 10, the sealing surface 910 can also be kept parallel to the working surface 10 after processing.

[0036] Please continue reading Figure 6As shown, the wedge block 2 also has a third surface 23 connected to one end of the first surface 21 and the second surface 22 that are away from each other. In a direction substantially parallel to the working surface 10, the sink 20 is strip-shaped and connected to the third surface 23. The purpose of such a setting is that when the first locking member 41 is located at different positions in the sink 20, the gate valve 91 can be kept at different angles relative to the working surface 10, thereby achieving angle adaptation of different types of gate valves 91 or gate valves 91 that are deformed after use, thereby improving the scope of application and flexibility of use of the gate valve clamping device 100.

[0037] One end of the first locking member 41 is detachably mounted on the base 1 to facilitate adjustment of the position of the wedge block 2. Figure 4 As shown, the base 1 is provided with a first threaded hole 11 corresponding to the first locking member 41, and the first locking member 41 can be a structure with external threads such as a bolt, which is used to engage with the first threaded hole 11 to achieve a detachable fixed connection between one end of the first locking member 41 and the base 1. In other optional embodiments, the first locking member 41 can also be detachably connected to the base 1 in other ways, which are not particularly limited here.

[0038] According to specific needs, the number of the first locking member 41 and the sink 20 can be at least one, and optionally, at least two ( Figure 4 Two are shown in the figure), so that the wedge block 2 can be fixed at multiple points through multiple first locking members 41 to prevent the wedge block 2 from rotating around the first locking members 41 and causing the gate valve 91 to move relative to the working surface 10.

[0039] See also Figure 1 and Figure 2 As shown, the gate valve 91 includes guide rails 914 located on both sides of the first direction Y, and guide grooves 9140 along the second direction Z are provided on the guide rails 914. The first direction Y and the second direction Z are both perpendicular to the axial direction X of the base 1; Figure 3 and Figure 4 As shown, the plurality of fasteners 3 include at least two first fasteners 31, one end of the first fastener 31 is fixed on the working surface 10 of the base 1, and the other end of the first fastener 31 is provided with a first limit plate 312, and the first limit plate 312 is used to abut against the surface of the guide rail portion 914 away from the base 1. The first fastener 31 applies pressure toward the base 1 to the guide rail portion 914 through its first limit plate 312, thereby fixing the gate valve 91 on the base 1.

[0040] like Figure 3 and Figure 4 As shown, the plurality of first fasteners 31 are located on both sides of the gate valve 91 in the first direction Y, and can also limit the movement of the gate valve 91 in the first direction Y.

[0041] The guide groove 9140 of the gate valve 91 is used to cooperate with the guide portion (not shown) on the valve seat 92, so that the gate valve 91 can only move along the extension direction of the guide portion.

[0042] In one embodiment, the first direction Y and the second direction Z may be perpendicular to each other. It should be noted that the perpendicularity here is not limited to maintaining 90°. Based on some processing error factors or deformation factors, a certain angle is allowed between the first direction Y and the second direction Z, for example, an angle not exceeding 10° is allowed.

[0043] Specifically, Figure 3 and Figure 4 As shown, the first fastener 31 includes a first fastening plate 311 and a second locking member 315. The end of the first fastening plate 311 away from the base 1 is a first limiting plate 312. The first limiting plate 312 is provided with a second threaded hole 3120 that penetrates along the axial direction X of the base 1. The second locking member 315 can be engaged with the second threaded hole 3120. The second locking member 315 is a structural member with external threads such as a bolt. Through the engagement of the second locking member 315 with the second threaded hole 3120, the second locking member 315 can move along the axial direction X of the base 1, so that the end of the second locking member 315 can be against the surface of the guide rail part 914 or away from the surface of the guide rail part 914. In other optional embodiments, the second locking member 315 can also be detachably connected to the base 1 in other ways, which are not particularly limited here.

[0044] The number of the second threaded hole 3120 provided on the first limiting plate 312 may be one or more, depending on the processing conditions of the second threaded hole 3120 and the area of ​​the first limiting plate 312 .

[0045] Please continue reading Figure 4 and Figure 5 As shown, a second stop plate 313 is provided at one end of the first fastening plate 311 facing the base 1, and the second stop plate 313 is protruded toward the side away from the gate valve 91. A third threaded hole 13 is provided on the base 1, and the first fastener 31 further includes a third locking member 316, which passes through the second stop plate 313 and engages with the third threaded hole 13. The third locking member 316 is a structural member with external threads such as a bolt.

[0046] In other optional embodiments, the third locking member 316 may also be detachably connected to the base 1 in other ways, which are not particularly limited here. Figure 4As shown, the second limit plate 313 is provided with a first through hole 3130, and the first through hole 3130 penetrates to the end surface 920 of the first limit plate 312 which faces away from the gate valve 91. The purpose of such arrangement is that the first through hole 3130 is in a strip shape, and by arranging the third locking member 316 at different positions in the first through hole 3130, the position of the gate valve 91 along the first direction Y can be adjusted, so that the gate valve 91 and the base 1 can be adjusted to be concentric, which is applicable to gate valves 91 of different models or gate valves 91 of different sizes.

[0047] See also Figure 3 As shown, the first fastening plate 311 also includes a connecting plate 314 connected between the first limiting plate 312 and the second limiting plate 313. The first limiting plate 312, the connecting plate 314 and the second limiting plate 313 can be an integral structure, such as an integral stamping part, or an assembly part, such as welded together.

[0048] The side of the connecting plate 314 facing the gate valve 91 may be perpendicular to the working surface 10 to fit the side of the guide rail portion 914. According to actual needs, the side of the connecting plate 314 facing the gate valve 91 may also be in other shapes, without particular limitation.

[0049] See also Figure 1 and Figure 2 As shown, the gate valve 91 includes two valve flaps 911 arranged opposite to each other. Optionally, the valve flaps 911 may be mirror-symmetrical about the radial plane S of the valve seat 92. The sides of the valve flaps 911 facing away from each other respectively have a surface to be processed, that is, a sealing surface 910. The sides of the valve flaps 911 close to each other are provided with a connecting portion 912, and the periphery of the sides of the valve flaps 911 close to each other forms a gap 913 around the connecting portion 912. The gap 913 is connected to the guide groove 9140, or in other words, the guide groove 9140 is a part of the gap 913.

[0050] The gate valve 91 configured in this way has a certain elasticity, that is, due to the existence of the gap 913 between the edges of the valve flap 911, the edge of the valve flap 911 can be deformed to a certain extent, which enables the gate valve 91 to adapt to the end face 920 of the valve seat 92. For example, when the end face 920 of the valve seat 92 has a processing error or a slight deformation, the sealing surface 910 can also achieve a sealed connection with the end face 920 of the valve seat 92.

[0051] In this case, please refer to Figure 3 , Figure 4 , Figure 5 and Figure 8As shown, the plurality of fasteners 3 include at least one second fastener 32, and the end of the second fastener 32 facing away from the base 1 is used to be arranged in the gap 913 and abut against the surface of the valve flap 911. It should be noted that, assuming that the direction toward the base 1 along the axial direction X is the rear, the "surface of the valve flap 911" referred to here refers to the front surface of the valve flap 911 located at the rear, so that the second fastener 32 can press the valve flap 911 against the base 1. In other words, the other end of the second fastener 32 is arranged between the two valve flaps 911, and presses the valve flap 911 close to the base 1.

[0052] Specifically, see Figure 1 and Figure 2 As shown, along the second direction Z, the gate valve 91 has an upper end and a lower end. It should be noted that the "upper end" and the lower end only represent two relative positions, which does not mean that when the gate valve 91 is used between the pipeline 93 and the valve seat 92, the upper end must be above the lower end. Based on practical applications, "upper" can be the direction in which the gate valve 91 can be separated from the valve seat 92, that is, when the gate valve 91 moves upward, the end face 920 of the valve seat 92 is separated from the sealing surface 910 of the gate valve 91, and when the gate valve 91 moves downward, the end face 920 of the valve seat 92 forms a sealed connection with the sealing surface 910 of the gate valve 91.

[0053] See also Figure 5 and Figure 8 As shown, at least one second fastener 32 is arranged at the lower end of the valve flap 911 along the second direction Y, and the second fastener 32 includes a first threaded column 321, a support column 322, a fourth locking member 324 and a first pressing plate 323. The first threaded column 321 and the support column 322 are both arranged on the base 1, specifically, arranged along the axial direction X of the base 1, and the first pressing plate 323 is provided with a second through hole 3230 capable of passing through the first threaded column 321, and the end of the support column 322 away from the base 1 is used to abut against the surface of the first pressing plate 323 facing the base 1; the fourth locking member 324 is arranged on the side of the first pressing plate 323 away from the base 1, and can be engaged with the first threaded column 321. The fourth locking member 324 can be a structural member with internal threads such as a nut.

[0054] The working principle of the second fastener 32 is that when the fourth locking piece 324 is engaged with the first threaded column 321, the fourth locking piece 324 can move along the axial direction X of the base 1 and push the first pressure plate 323 toward the base 1, so that the first pressure plate 323 abuts against the front surface of the rear valve flap 911. In the second direction Z, the first threaded column 321 is located on the outside of the valve flap 911, the support column 322 is located on the side of the first threaded column 321 away from the valve flap 911, a part of the first pressure plate 323 is located between the two valve flaps 911, and the support column 322 is used to provide a reaction force to a part of the first pressure plate 323 located outside the valve flap 911, so that the part of the first pressure plate 323 located between the valve flaps 911 can abut against the front surface of the rear valve flap 911 in a form that is substantially flush with the working surface 10. Please refer to Figure 8 shown.

[0055] The first threaded column 321 and / or the supporting column 322 may be disposed in a fourth threaded hole (not shown) on the base 1 in the form of threaded engagement, or may be matched with the base 1 in other forms.

[0056] Please continue reading Figure 1 and Figure 7 As shown, the upper end of the valve disc 911 along the second direction Y is also provided with an avoidance hole 915 that penetrates along the axial direction X of the base 1 and is connected to the outer edge of the upper end of the valve disc 911. At least one second fastener 32 includes a second threaded column 325, a second pressing plate 326 and a fifth locking member 327. The second threaded column 325 is arranged on the base 1, specifically, along the axial direction X of the base 1. The second pressing plate 326 is provided with a third through hole 3260 that can pass through the second threaded column 325. The fifth locking member 327 is arranged on the side of the second pressing plate 326 that is away from the base 1 and can be engaged with the second threaded column 325. The fifth locking member 327 can be a structural member with internal threads such as a nut.

[0057] The working principle of the second fastener 32 is that when the fifth locking member 327 is engaged with the second threaded column 325, the fifth locking member 327 can move along the axial direction X of the base 1 and push the second pressing plate 326 toward the base 1, so that the second pressing plate 326 abuts against the front surface of the valve flap 911 at the rear. Since the avoidance hole 915 is connected to the upper outer edge of the valve flap 911, the two sides of the second pressing plate 326 along the first direction Y can respectively abut against the front surface of the valve flap 911 on both sides thereof. Please refer to Figure 7 and Figure 8 shown.

[0058] The second threaded column 325 can be disposed in a fifth threaded hole (not shown) on the base 1 in the form of threaded engagement, or can be matched with the base 1 in other forms.

[0059] The method of using the gate valve clamping device 100 provided in the embodiment of the present application is as follows: 1. Fix the wedge block 2 on the base 1, and place the gate valve 91 on the side of the wedge block 2 away from the base 1, so that the surface of the gate valve 91 facing the base 1 contacts the wedge block 2; measure the angle between the position of the sealing surface 910 on the side of the gate valve 91 away from the base 1 and the working surface 10 by an instrument (such as a level); when the two are parallel, lock the wedge block 2 by the first locking member 41; 2. Arrange the two first fasteners 31 on the base 1 so that the connecting plate 314 abuts against the side of the guide rail portion 914 and the first limit plate 312 abuts against the surface of the gate valve 91 away from the base 1 and avoids the sealing surface 910; 3. Two second fasteners 32 are arranged on the base 1 , so that the first pressing plate 323 and the second pressing plate 326 are pressed against the surface of the gate valve 91 away from the base 1 and avoid the sealing surface 910 .

[0060] The above steps can be exchanged in order according to actual conditions, or the gate valve 91 can be pre-fixed in each step, and then at least one of the above steps can be repeated for fine-tuning to ensure that the gate valve 91 is adjusted to the required position in the first direction Y, the second direction Z and the axial direction X of the base 1.

[0061] The gate valve clamping device 100 provided in the embodiment of the present application can adapt to the inclination angle of the gate valve 91 toward the valve seat 92, so that the gate valve 91 is maintained at an angle suitable for processing, thereby making the processing of the sealing surface 910 more accurate. In addition, for the gate valve 91 used in a nuclear power plant, the gate valve clamping device 100 can effectively and quickly fix the gate valve 91, thereby reducing the radiation dose received by the operator.

[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A gate valve clamping device, characterized in that: include: A base, a wedge-shaped block disposed on the base, and a plurality of fasteners disposed on the base; The wedge block has a first surface facing the base and a second surface facing the gate valve, the first surface and the second surface are arranged at an angle, one end of each fastener is used to be fixed on the base, and the other end of each fastener is used to abut against a surface of at least a part of the gate valve that is away from the base and avoids the surface to be processed.

2. The gate valve clamping device according to claim 1, characterized in that: The wedge block is provided with a sink groove which penetrates the wedge block along the axial direction of the base; the gate valve clamping device also includes a first locking piece, one end of which is fixed to the base and the other end of which is located in the sink groove.

3. The gate valve clamping device according to claim 2, characterized in that: The wedge block also has a third surface connected to the first surface and the second surface at one end away from each other, the sink groove is connected to the third surface, and one end of the first locking member is detachably fixed to the base.

4. The gate valve clamping device according to claim 1, characterized in that: The gate valve includes guide rail portions located on both sides of the first direction thereof, and the guide rail portions are provided with guide grooves along the second direction, and the first direction and the second direction are both perpendicular to the axial direction of the base; the multiple fasteners include at least two first fasteners, and the other end of the first fastener is provided with a first limit plate, and the first limit plate is used to abut against the surface of the guide rail portion away from the base.

5. The gate valve clamping device according to claim 4, characterized in that: The first fastener includes a first fastening plate and a second locking member. The first fastening plate is provided with the first limiting plate at one end away from the base. The first limiting plate is provided with a second threaded hole penetrating along the axial direction of the base. The second locking member can engage with the two threaded holes.

6. The gate valve clamping device according to claim 5, characterized in that: A second limiting plate protruding away from the gate valve is provided at one end of the first fastening plate facing the base, a third threaded hole is provided on the base, and the first fastener also includes a third locking member, which passes through the second limiting plate and engages with the third threaded hole.

7. The gate valve clamping device according to claim 6, characterized in that: The second limiting plate is provided with a first through hole, and the first through hole penetrates to an end surface of the first limiting plate on one side away from the gate valve.

8. The gate valve clamping device according to any one of claims 1 to 7, characterized in that: The gate valve comprises two valve flaps, and the sides of the valve flaps facing away from each other respectively have the surfaces to be processed; the sides of the valve flaps facing each other are provided with connecting parts, and the peripheries of the sides of the valve flaps facing each other form a gap around the connecting parts; the plurality of fasteners comprise at least one second fastener, and one of the valve flaps close to the base is located between the base and the end of the second fastener facing away from the base.

9. The gate valve clamping device according to claim 8, characterized in that: At least one of the second fasteners is disposed at one end of the valve flap along the second direction, the second fastener comprises a first threaded column, a support column, a fourth locking member and a first pressing plate, the first threaded column and the support column are both disposed on the base, a second through hole capable of passing through the first threaded column is disposed on the first pressing plate, and an end of the support column facing away from the base is used to abut against a surface of the first pressing plate facing the base; The fourth locking member is disposed on a side of the first pressing plate away from the base and can be engaged with the first threaded column.

10. The gate valve clamping device according to claim 8, characterized in that: The other end of the valve flap along the second direction is also provided with an avoidance hole which penetrates through the base along the axial direction and is connected to the outer edge of the valve flap. At least one of the second fasteners includes a second threaded column, a second pressure plate and a fifth locking piece. The second threaded column is arranged on the base, and the second pressure plate is provided with a third through hole which can pass through the second threaded column. The fifth locking piece is arranged on the side of the second pressure plate away from the base and can engage with the second threaded column.

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