Fixing device for pore plate clamping ring of nuclear power plant

Abstract

The utility model relates to a nuclear power plant pore plate clamping ring fixing device, which can ensure that a clamping ring is accurately positioned and fixed at a preset position through the matched use of a sliding channel on a seat body, a clamping block and a clamping fixing piece, the clamping ring deviation phenomenon caused by improper manual adjustment or hammering in the prior art is avoided. Therefore, not only is the measurement accuracy of the orifice plate flowmeter improved, but also the overall stability of the system is enhanced. And secondly, compared with a traditional installation mode, the supporting device and the lifting device are introduced, so that the whole installation process is simpler, more convenient and faster. An operator can complete the installation work of the clamping ring through the steps of simple placement, adjustment, locking and the like, the labor intensity is greatly reduced, and meanwhile the requirement for professional skills is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power field especially relates to nuclear power plant orifice plate clamping ring fixing device. BACKGROUND

[0002] In modern industry, especially in the field of power production, flow measurement is an indispensable part of monitoring and control. Orifice plate flowmeter, as a common flow measurement device, is widely used in the flow measurement of various fluid media due to its simple structure and relatively low cost, and plays an important role in the flow monitoring of the water supply system in high-pressure environments such as nuclear power plants. However, in actual application, orifice plate flowmeters have certain limitations, especially in terms of accuracy and stability.

[0003] In the prior art, the working principle of orifice plate flowmeter is based on the combination of Bernoulli equation and continuity equation, which calculates the flow size by measuring the pressure difference before and after the fluid passes through a specific shape (usually circular) orifice. In order to ensure accurate measurement results, the orifice plate must be installed in the pipeline strictly according to the set requirements and its position must be kept fixed. However, in actual operation, due to various reasons such as improper installation or wear caused by long-term operation, the orifice plate and its accessories, especially the clamping ring used for fixation, may loosen. In this case, the orifice plate will sway or even tilt under the action of water flow, which will affect the pressure distribution downstream of the orifice plate, and ultimately lead to fluctuations or drift in flow measurement data.

[0004] Specifically in the application scenario of nuclear power plants, the traditional method is to manually rotate and hammer the orifice plate clamping ring during the overhaul period. This method lacks standardized operating procedures and torque control means, which can easily cause the clamping ring to fail to achieve the ideal fastening state; at the same time, after tightening, using a hammer to knock may cause the clamping ring that has been partially expanded to rotate as a whole, further exacerbating the problem of incorrect fixation of the clamping ring. In the long run, not only does it affect the accuracy of flow measurement, but it also may pose a threat to the safe and stable operation of related equipment.

[0005] As shown in Figure 1 , an orifice plate measuring device is provided on the pipeline, which includes a clamping ring 20, an adjusting ring 30, and a valve body 40. The valve body 40 is arranged on the nuclear power pipeline, the clamping ring 20 and the adjusting ring 30 are arranged on the valve body 40, and the orifice plate 60 is arranged on the clamping ring 20. The clamping ring 20 and the adjusting ring 30 are connected by threads. With the continuous rotation of the clamping ring, the adjusting ring continuously expands, and the fitting force between the adjusting ring 30 and the orifice plate 60 continuously increases. In this way, the adjusting ring 30 is easy to drive the clamping ring 20 to rotate together, which leads to the failure of the adjustment of the orifice plate 60, and further leads to the inclination of the position of the orifice plate 60, and finally leads to inaccurate measurement data. The utility model discloses a kind of nuclear power plant orifice plate clamping ring fixing devices, can solve the problem of clamping ring lack of fixation and easy to deflect when adjusting clamping ring tension.

[0006] The technical problem to be solved by the utility model is to provide a nuclear power plant orifice plate clamping ring fixing device that can solve the problem of lack of fixation and easy to deflect of the clamping ring when adjusting the tension of the clamping ring.

[0007] The utility model provides a kind of nuclear power plant orifice plate clamping ring fixing device, it includes:

[0008] A seat body is provided with two mutually symmetrical sliding channels;

[0009] A clamping device includes two clamping blocks and two clamping fixtures, the two clamping blocks are correspondingly arranged in the two sliding channels, and the two clamping fixtures are correspondingly arranged in the two sliding channels.

[0010] A supporting device includes two supporting fixtures, which are symmetrically arranged on the seat body.

[0011] A lifting device includes two handles, which are symmetrically arranged on the surface of the seat body away from the clamping device.

[0012] Among them, the two supporting fixtures are fixed on the valve body from opposite sides, and the two clamping blocks are fixed on the clamping ring from opposite sides, thereby limiting the relative position of the clamping ring and the valve body. Preferably, the nuclear power plant orifice plate clamping ring fixing device further includes a variable diameter head, the variable diameter head is inserted into an adjusting ring, the adjusting ring is provided with a plurality of torque holes outwardly on the circumference, the variable diameter head has a first connecting end and a second connecting end;

[0013] The first connecting end is detachably inserted into the torque hole, and the second connecting end is used to connect the torque and drive the adjusting ring to rotate through the variable diameter head.

[0014] Preferably, the first connecting end has a hexagonal cross section, the second connecting end is provided with a torque matching hole, and the torque matching hole is used for inserting a torque tool.

[0015] Preferably, the supporting device includes a plurality of supporting bolts.

[0016] The seat body is provided with two supporting grooves, and at least one first connecting hole is formed in each supporting groove.

[0017] Each of the support members comprises sequentially connected insertion bosses, positioning bosses and support bosses, at least one second connecting hole is formed in the insertion boss, the second connecting hole penetrates to the positioning boss;

[0018] The two insertion bosses are correspondingly inserted into the two support grooves, the first connecting hole is correspondingly aligned with the second connecting hole, the support bolt is correspondingly penetrated into the first connecting hole, and the support bolt is correspondingly screwed into the second connecting hole, and the two support bosses are respectively supported on the valve body from two opposite positions.

[0019] Preferably, each of the sliding channels comprises a sliding groove, a sliding hole is formed in the bottom of the sliding groove, the two clamping fixtures are correspondingly penetrated into the two sliding channels, and the two clamping fixtures are correspondingly connected to the two clamping blocks.

[0020] Preferably, each of the clamping fixtures comprises a clamping bolt, and the two clamping bolts are screwed into the two clamping blocks.

[0021] Preferably, each of the sliding channels further comprises a limiting groove, the limiting groove and the sliding groove are respectively located on the opposite sides of the seat body, and the limiting groove is respectively communicated with the two sliding holes.

[0022] Preferably, the handle is in a U shape.

[0023] Preferably, the support device comprises four lifting bolts, two lifting bolts are arranged on each of the handles, and the lifting bolts are screwed into the seat body.

[0024] Preferably, each of the handles comprises a connecting arm and two connecting seats, and the two connecting seats are respectively connected to two ends of the connecting arm.

[0025] The lifting bolts are correspondingly penetrated into the connecting seats, and the lifting bolts are screwed into the seat body.

[0026] The implementation of the utility model has the following beneficial effects:

[0027] The utility model relates to a kind of nuclear power plant orifice plate clamping ring fixing device, by the sliding channel on seat body and specially arranged clamping block and clamping fixture cooperation, it can ensure that clamping ring is accurately positioned and fixed in predetermined position, avoid the clamping ring deviation phenomenon caused by improper manual adjustment or hammering in prior art.This not only improves the measurement accuracy of orifice plate flowmeter, also enhances the overall stability of system.

[0028] Secondly, compared with the traditional installation mode, the device introduces the setting of the supporting device and the lifting device, so that the whole installation process is more convenient and fast. The operator can complete the installation work of the clamping ring through simple steps such as placing, adjusting and locking, greatly reducing the labor intensity, and reducing the requirement for professional skills. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures, and in which:

[0030] Figure 1 is a structural schematic view of the nuclear power plant orifice plate clamping ring fixing device and the orifice plate flowmeter in some embodiments of the present application;

[0031] Figure 2 is a structural schematic view of the nuclear power plant orifice plate clamping ring fixing device from another angle; Figure 1

[0032] Figure 3 is a result schematic view of the nuclear power plant orifice plate clamping ring fixing device in some embodiments of the present application;

[0033] Figure 4 is an exploded view of the nuclear power plant orifice plate clamping ring fixing device shown in Figure 3

[0034] Figure 5 is a structural schematic view of the nuclear power plant orifice plate clamping ring fixing device shown in Figure 3 DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in more detail by referring to the attached drawings. Although the embodiments of the present application are shown in the drawings, it should be understood that the present application 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 application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0036] ​​​It should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various information, these 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, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0037] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] Unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, can be fixed connection, can also be detachable connection or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Figure 1 The nuclear power plant hole plate clamping ring fixing device 10 in some embodiments of the present application is shown, which can correspond to the clamping of the fixed ring on the hole plate.

[0040] The nuclear power plant hole plate clamping ring fixing device 10 comprises a seat body 1, a clamping device 2, a supporting device 3 and a lifting device 4, and the clamping device 2, the supporting device 3 and the lifting device 4 are respectively arranged on the seat body 1.

[0041] As shown in Figures 1 to 5 The seat body 1 is provided with two mutually symmetrical sliding channels 11. The clamping device 2 comprises two clamping blocks 21 and two clamping fixing pieces 22, the two clamping blocks 21 are correspondingly arranged on the two sliding channels 11, and the two clamping fixing pieces 22 are correspondingly arranged on the two sliding channels 11, and the two clamping fixing pieces 22 are correspondingly arranged on the two clamping blocks 21.

[0042] The supporting device 3 comprises two supporting pieces 31 symmetrically arranged on the seat body 1. The lifting device 4 comprises two handles symmetrically arranged on the surface of the seat body 1 away from the clamping device 2.

[0043] The two supporting pieces 31 are respectively fixed on the valve body from opposite sides, and the two clamping blocks 21 are respectively fixed on the clamping ring from opposite sides, so as to limit the relative position of the clamping ring and the valve body. Preferably, the nuclear power plant orifice plate clamping ring fixing device 10 further comprises a reducing head, which is inserted into the adjusting ring 30. The adjusting ring 30 is provided with a plurality of torque holes outwardly on the outer edge, and the reducing head has a first connecting end and a second connecting end.

[0044] The first connecting end is detachably inserted into the torque hole, and the second connecting end is used to introduce torque and drive the adjusting ring 30 to rotate through the reducing head.

[0045] It can be understood that the seat body 1 can be made of high-strength material to ensure the stability and durability of the whole device. Two symmetric sliding channels 11 are formed on the seat body 1. The sliding channels 11 are arranged to enable the clamping blocks 21 to move smoothly along them, thereby adapting to the needs of different sizes of orifice plates.

[0046] The clamping device 2 is composed of two clamping blocks 21 and two clamping fixing pieces 22. Each clamping block 21 is arranged to be freely slidable along the sliding channel 11, and the clamping fixing piece 22 is connected with the clamping block 21 through the sliding channel 11, which ensures that the position of the clamping block 21 can be firmly locked after the appropriate position is found. The clamping device 2 can tightly and uniformly clamp the orifice plate clamping ring from both sides to prevent displacement during use.

[0047] The supporting device 3 comprises two symmetrically arranged supporting pieces 31 on the seat body 1. The two supporting pieces 31 provide additional support from both sides to ensure that the whole device can be stably fixed on the valve body when the clamping ring is clamped, thereby enhancing the overall safety performance.

[0048] The lifting device 4 is provided with two handles to facilitate the workers to easily lift or move the whole device. The handles are located on the side of the seat body 1 away from the clamping device 2, which not only facilitates carrying, but also does not interfere with the operation during clamping.

[0049] As Figures 1 to 5 Locking, in some embodiments of the nuclear power plant orifice plate clamping ring fixing device 10, the first connecting end has a hexagonal cross section, and the second connecting end is provided with a torque fitting hole for inserting a torque tool.

[0050] It is appreciated that the first connecting end is hexagonal in cross section. This shape not only increases the aesthetic appearance, but more importantly, it allows the end to be easily rotated by a standard size wrench or other hand tools, thereby achieving fine adjustment of the position of the nuclear power plant orifice clamping ring fixing device 10. The hexagonal arrangement also means that even in a narrow space, the appropriate force application angle can be easily found.

[0051] The second connecting end is provided with a specially designed torque fitting hole. This hole is designed to allow a professional torque tool to be accurately inserted and provide sufficient contact area to facilitate the application of the required torque. When a larger torque is required, such as to ensure tight fitting between the clamping block 21 and the orifice clamping ring during tightening, the torque fitting hole can be used with a special tool. In addition, such an arrangement ensures that the force is evenly distributed during the application of torque, avoiding the risk of damage due to excessive local force.

[0052] As Figures 1 to 5 Locking, in some embodiments of the nuclear power plant orifice clamping ring fixing device 10, the support device 3 includes a plurality of support bolts 33; the seat body 1 is provided with two support grooves 12, and each support groove 12 is provided with at least one first connecting hole 13;

[0053] Each support piece 31 includes an insertion boss 311, a positioning boss 312 and a support boss 313 connected in sequence, the insertion boss 311 is provided with at least one second connecting hole 314, and the second connecting hole 314 penetrates the positioning boss 312;

[0054] Among them, two insertion bosses 311 are inserted into two support grooves 12 one by one, so that each first connecting hole 13 is aligned with each second connecting hole 314 one by one, each support bolt 33 is inserted into each first connecting hole 13 one by one, and each support bolt 33 is screwed into each second connecting hole 314 one by one, and two support bosses 313 are respectively supported on the valve body from opposite positions.

[0055] It is appreciated that the support bolt 33 is used to fix the support piece 31 to the seat body 1.

[0056] The insertion boss 311 is located at the front end and is provided with at least one second connecting hole 314, which penetrates the positioning boss 312. The insertion boss 311 is arranged to be tightly inserted into the support groove 12 on the seat body 1, ensuring that the support piece 31 can be stably installed.

[0057] The positioning boss 312 is arranged immediately after the insertion boss 311, and mainly serves to assist positioning and ensure that the support piece 31 does not move unnecessarily after the insertion boss 311 is completely inserted into the support groove 12. The arrangement of the positioning boss 312 helps to improve the stability of the overall structure.

[0058] The support boss 313 serves as the main bearing part of the support piece 31, and provides necessary support force by abutting against the valve body from opposite sides. The arrangement of the support boss 313 ensures good contact area and uniform pressure distribution.

[0059] As Figures 1 to 5 Locking, in some embodiments of the nuclear power plant orifice clamping ring fixing device 10, each sliding channel 11 includes a sliding groove 111, and the bottom of the sliding groove 111 is provided with a sliding hole 112. Two clamping fixing pieces 22 are correspondingly arranged in the two sliding channels 11, and the two clamping fixing pieces 22 are correspondingly connected to the two clamping blocks 21.

[0060] It can be understood that the bottom of each sliding groove 111 is provided with one or more sliding holes 112. The main function of these sliding holes 112 is to provide a path for the clamping fixing piece 22 to pass through the sliding channel 11 and connect to the clamping block 21.

[0061] The position and size of the sliding hole 112 are properly set to ensure that the clamping fixing piece 22 can pass through smoothly and maintain sufficient strength to fix the clamping block 21. In addition, the sliding hole 112 should also have a certain tolerance range so as not to be hindered when adjusting the position of the clamping block 21.

[0062] As Figures 1 to 5 Locking, specifically, in some embodiments of the nuclear power plant orifice clamping ring fixing device 10, each clamping fixing piece 22 includes a clamping bolt, and two clamping bolts are screwed to the two clamping blocks 21.

[0063] It can be understood that each clamping fixing piece 22 is composed of a clamping bolt. The clamping bolt passes through the sliding hole 112 in the sliding channel 11 and is screwed into the threaded hole on the clamping block 21. The design of the clamping bolt allows the user to tighten or loosen the clamping block 21 by rotating, thereby achieving precise control of the orifice clamping ring.

[0064] As Figures 1 to 5 Locking, in some embodiments of the nuclear power plant orifice clamping ring fixing device 10, each sliding channel 11 further includes a limiting groove 113, and the limiting groove 113 and the sliding groove 111 are respectively located on the opposite sides of the seat body 1, and the limiting groove 113 respectively communicates with the two sliding holes 112.

[0065] It is understood that the limiting groove 113 and the sliding groove 111 are located on the opposite sides of the seat body 1 respectively, and each limiting groove 113 is communicated with two sliding holes 112 respectively. The main function of the limiting groove 113 is to provide an additional guide path for the clamping bolt, while limiting the movement range of the clamping block 21, and ensuring its stability at the predetermined position.

[0066] As Figures 1 to 5 Locking, in some embodiments of the hole plate clamping ring fixing device 10 of the nuclear power plant, the handle is U-shaped.

[0067] It is understood that each handle is in U-shaped structure, which takes into account the ergonomic principle, so that the operator can be more relaxed and comfortable when lifting or moving the device. The two ends of the U-shaped handle are fixed on the surface of the seat body 1 away from the clamping device 2, which ensures that the handle has enough strength and stability with the seat body 1.

[0068] As Figures 1 to 5 Locking, in some embodiments of the hole plate clamping ring fixing device 10 of the nuclear power plant, the support device 3 includes four lifting bolts, two lifting bolts are arranged on each handle, and each lifting bolt is screwed on the seat body 1.

[0069] It is understood that two lifting bolts are arranged on each handle, and there are four lifting bolts in total. These lifting bolts pass through the handle, and the arrangement of the lifting bolts not only provides strong fixing force, but also allows the user to adjust the position of the handle or maintain by rotating the bolt.

[0070] As ​ Locking, in some embodiments of the hole plate clamping ring fixing device 10 of the nuclear power plant, each handle includes a connecting arm and two connecting seats, and the two connecting seats are connected to the two ends of the connecting arm respectively;

[0071] Each lifting bolt is correspondingly arranged in each connecting seat, and each lifting bolt is screwed on the seat body 1.

[0072] It is understood that the handle is the main bearing part, which is convenient for the operator to grasp. The design takes into account the ergonomic principle to provide a comfortable grip feeling. The two ends of each handle are respectively provided with connecting seats, and these connecting seats are used to fix the handle to the seat body 1. The connecting seat usually has a mounting hole for passing the lifting bolt.

[0073] It is understood that the seat body 1 is made of high-strength material, which ensures the stability and durability of the whole device. Two symmetrical sliding channels 11 are formed on the seat body 1, and the arrangement of these sliding channels 11 enables the clamping block 21 to move smoothly along them, thereby adapting to the needs of hole plates of different sizes.

[0074] Each clamping block 21 is arranged to be freely slidable along the sliding channel 11, while the clamping fixing member 22 is connected with the clamping block 21 through the sliding channel 11 to ensure that the position of the clamping block 21 can be firmly locked after a suitable position is found. In this way, the clamping device 2 can tightly and uniformly clamp the orifice plate clamping ring from both sides to prevent displacement during use.

[0075] The two supporting members 31 on the supporting device 3 serve to provide additional support from both sides to ensure that the entire device can be stably fixed on the valve body when the clamping ring 20 is clamped, thereby enhancing the overall safety performance.

[0076] The two handles on the lifting device 4 facilitate the workers to easily lift or move the entire device. The handles are located on the side of the seat body 1 away from the clamping device 2, which not only facilitates carrying, but also does not interfere with the operation during clamping.

[0077] The implementation of the present utility model has the following beneficial effects:

[0078] The present utility model relates to an orifice plate clamping ring fixing device for a nuclear power plant. The sliding channel on the seat body and the specially arranged clamping block and clamping fixing member are used in cooperation to ensure that the clamping ring is accurately positioned and fixed at a predetermined position, thereby avoiding the clamping ring displacement phenomenon caused by improper manual adjustment or hammering in the prior art. This not only improves the measurement accuracy of the orifice plate flowmeter, but also enhances the overall stability of the system.

[0079] Secondly, compared with the traditional installation method, the present device introduces the arrangement of the supporting device and the lifting device, which makes the entire installation process more simple and convenient. The operator can complete the installation work of the clamping ring through simple steps such as placing, adjusting and locking, thereby greatly reducing the labor intensity and reducing the requirement for professional skills.

[0080] The scheme of the present utility model has been described in detail above with reference to the drawings. In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments. It should be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the present utility model. In addition, it can be understood that the steps in the method of the embodiments of the present utility model can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device of the embodiments of the present utility model can be combined, divided and reduced according to actual needs.

[0081] The above has described various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled 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 application, or improvement to the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. A nuclear power plant orifice plate clamp ring securing device, characterized by, The utility model relates to a nuclear power plant orifice plate clamping ring fixing device, including: The seat body (1) is opened with two symmetrical sliding channels (11); Clamping device (2), the clamping device (2) includes two clamping blocks (21) and two clamping fixed parts (22), two the clamping block (21) one-to-one corresponding sliding is arranged in two the sliding channel (11), two the clamping fixed part (22) one-to-one corresponding is set up in two the sliding channel (11), two the clamping fixed part (22) one-to-one corresponding is arranged in two the clamping block (21); Support device (3), the support device (3) includes two support parts (31), and two the support part (31) is symmetrically arranged on the seat body (1);And Lifting device (4), the lifting device (4) includes two handles, and two the handle is symmetrically arranged on the surface of the seat body (1) away from the clamping device (2); Wherein, two the support part (31) is fixed from opposite sides on valve body respectively, and two the clamping block (21) is fixed from opposite sides the clamping ring respectively, to limit the relative position of the clamping ring and the valve body.

2. The nuclear power plant orifice clamp ring securement device of claim 1, wherein, The nuclear power plant orifice plate clamping ring fixing device further includes a variable diameter head (5) inserted into an adjusting ring, the adjusting ring has a plurality of torque holes opened outwardly on the circumference, and the variable diameter head (5) has a first connecting end (51) and a second connecting end (52). The first connecting end (51) is detachably inserted into the torque hole, and the second connecting end is used for connecting torque and rotating the adjusting ring (30) through the variable diameter head (5).

3. The nuclear power plant orifice clamp ring securement device of claim 2, wherein, The first connecting end (51) has a hexagonal cross section, the second connecting end (52) has a torque matching hole, and the torque matching hole is used for inserting a torque tool.

4. The nuclear power plant orifice clamp ring securement device of claim 1, wherein, The support device (3) includes a plurality of support bolts (33). The seat body (1) has two support grooves (12), and each support groove (12) has at least one first connecting hole (13). Each support part (31) includes an insertion boss (311), a positioning boss (312) and a support boss (313) connected in sequence, the insertion boss (311) has at least one second connecting hole (314), and the second connecting hole (314) penetrates the positioning boss (312). Wherein, two the insertion boss (311) one-to-one corresponding is inserted into two the support groove (12), so that each the first connecting hole (13) one-to-one corresponding with each the second connecting hole (314) is aligned, each the support bolt (33) one-to-one corresponding is inserted into each the first connecting hole (13), and each the support bolt (33) one-to-one corresponding is screwed into each the second connecting hole (314), and two the support boss (313) is supported on the valve body from opposite positions respectively.

5. The nuclear power plant orifice clamp ring securement device of claim 1, wherein, Each of the sliding channels (11) comprises a sliding groove (111) with a sliding hole (112) at the bottom, and two clamping fixing members (22) are correspondingly arranged in the two sliding channels (11), and the two clamping fixing members (22) are correspondingly connected to the two clamping blocks (21).

6. The nuclear power plant orifice clamp ring securement device of claim 5, wherein, Each of the clamping fixing members (22) comprises a clamping bolt, and the two clamping bolts are screwed to the two clamping blocks (21).

7. The nuclear power plant orifice plate clamp ring securing device of claim 5 or 6, wherein, Each of the sliding channels (11) further comprises a limiting groove (113) located on the opposite sides of the seat body (1) respectively with the sliding groove (111), and the limiting groove (113) is respectively communicated with the two sliding holes (112).

8. The nuclear power plant orifice clamp ring securement device of claim 1, wherein, The handle is in U shape.

9. The nuclear power plant orifice clamp ring securement device of claim 1 or 8, wherein, The supporting device (3) comprises four lifting bolts, two of which are arranged on each of the handles, and each of the lifting bolts is screwed to the seat body (1).

10. The nuclear power plant orifice clamp ring securement device of claim 9, wherein, Each of the handles comprises a connecting arm and two connecting seats, and the two connecting seats are respectively connected to the two ends of the connecting arm. Each of the lifting bolts is correspondingly arranged in each of the connecting seats, and each of the lifting bolts is screwed to the seat body (1).

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