Self-regulating floating seal joint and post-accident sampling dedicated facility

Abstract

The application discloses a self-adjusting floating sealing joint and a post-accident sampling special facility comprising the same. The self-adjusting floating sealing joint comprises a joint body and a sealing adjusting assembly. The upper part of the joint body is arranged in a mounting hole of a parent body. The sealing adjusting assembly comprises a sealing ring and a connecting cover. The connecting cover is fixedly connected to the mounting hole of the parent body, and the center of the connecting cover is provided with a through hole. The position of the through hole is aligned with the mounting hole. The middle part of the joint body is provided with a shaft shoulder which is supported on the connecting cover. The lower end of the joint body extends from the through hole. The outer wall of the upper part of the joint body is provided with a groove. The sealing ring is sleeved on the joint body and arranged in the groove. The sealing ring is in contact with the inner wall of the groove and in a squeezed state, so as to adjust the position of the joint body in the horizontal direction. The self-adjusting floating sealing joint can adjust the position thereof in the horizontal direction under the action of an external force.

Description

Technical Field

[0001] This invention relates to a self-adjusting floating seal joint and a dedicated post-accident sampling facility including the self-adjusting floating seal joint. Background Technology

[0002] Currently, in nuclear power plants, the sampling connectors of the sampling equipment used in the nuclear sampling system after an accident are placed in the glove box to connect pipelines containing radioactive media. Operators need to operate the glove box with one hand to connect and disconnect the sampling connector from the connecting plate on the glove box.

[0003] Generally, there are multiple sampling connectors, which correspond to multiple connection holes on the glove box. Since there is a certain error in the size between two adjacent connection holes, and the sampling connectors in the existing technology are fixed in the horizontal direction and cannot be moved or adjusted by external force, the multiple sampling connectors may not be aligned when they are connected to the multiple connection holes, resulting in installation difficulties. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a self-adjusting floating sealing joint and a special sampling facility for post-accident use including the self-adjusting floating sealing joint. The self-adjusting floating sealing joint can automatically adjust its position in the horizontal direction under the action of external force, and multiple sampling joints and multiple connection holes can be aligned, making installation convenient.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A self-adjusting floating sealing joint includes a joint body and a sealing adjustment assembly. The upper part of the joint body is disposed in a mounting hole of a mother body, the diameter of which is larger than the outer diameter of the upper part of the joint body. The sealing adjustment assembly includes a sealing ring and a connecting cover. The connecting cover is fixedly connected to the mounting hole of the mother body, and the center of the connecting cover has a through hole aligned with the mounting hole. The middle part of the joint body has a shoulder that supports the connecting cover. The lower end of the joint body extends out of the through hole. The outer wall of the upper part of the joint body has a groove. The sealing ring is fitted onto the joint body and disposed within the groove, and the sealing ring is in contact with and under compression against the inner wall of the groove to adjust the horizontal position of the joint body.

[0007] Preferably, the sealing adjustment assembly further includes an elastic support ring, which is sleeved on the connector body and disposed between the connecting cover and the shoulder. The elastic support ring is in a compressed state to adjust the position of the connector body in the vertical direction.

[0008] Preferably, the mounting hole is stepped, with a small-diameter hole at the top and a large-diameter hole at the bottom. The diameter of the through hole and the outer diameter of the connector body are the same as the diameter of the small-diameter hole of the mounting hole. The upper part of the connector body is located inside the small-diameter hole, and the shoulder is located inside the large-diameter hole of the mounting hole.

[0009] Preferably, the grooves are provided in multiple ways and are arranged parallel to each other along the axial direction of the connector body, and the number of sealing rings is the same as the number of grooves.

[0010] Preferably, the connecting cover and the mounting hole of the mother body are connected by a threaded connection or a pin connection.

[0011] Preferably, the sealing ring has a circular cross-sectional shape.

[0012] Preferably, the cross-section of the elastic support ring is circular.

[0013] The present invention also provides a special sampling facility for post-accident sampling, including a main body and the aforementioned self-adjusting floating sealing joint. The main body is provided with a plurality of parallel and spaced mounting holes, the distance between two adjacent mounting holes being the same first length. The number of self-adjusting floating sealing joints corresponds to the number of mounting holes, and one self-adjusting floating sealing joint is installed in one mounting hole.

[0014] In this invention, a sealing ring is installed on the upper part of the connector body of the self-adjusting floating sealing connector, so that the position of the connector body can be adjusted horizontally within the mounting hole of the mother body, thereby aligning with the sampling hole on the sampling plate for easy installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the self-adjusting floating sealing joint in Embodiment 1 of the present invention.

[0016] In the diagram: 10-Main body, 20-Connector body, 31-Sealing ring, 32-Connecting cover, 33-Elastic support ring. Detailed Implementation

[0017] The technical solutions of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of the invention.

[0018] In the description of this invention, it should be noted that the terms "above" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] This invention provides a self-adjusting floating sealing joint, comprising a joint body and a sealing adjustment assembly. The upper part of the joint body is disposed in a mounting hole of a mother body, the diameter of which is larger than the outer diameter of the upper part of the joint body. The sealing adjustment assembly includes a sealing ring and a connecting cover. The connecting cover is fixedly connected to the mounting hole of the mother body, and the center of the connecting cover has a through hole aligned with the mounting hole. The middle part of the joint body has a shoulder that supports the connecting cover. The lower end of the joint body extends out from the through hole. The outer wall of the upper part of the joint body has a groove. The sealing ring is fitted onto the joint body and disposed within the groove, and the sealing ring is in contact with and under compression against the inner wall of the groove to adjust the horizontal position of the joint body.

[0022] The present invention also provides a special sampling facility for post-accident sampling, including a main body and the aforementioned self-adjusting floating sealing joint. The main body is provided with a plurality of parallel and spaced mounting holes, the distance between two adjacent mounting holes being the same first length. The number of self-adjusting floating sealing joints corresponds to the number of mounting holes, and one self-adjusting floating sealing joint is installed in one mounting hole.

[0023] Example 1

[0024] like Figure 1As shown, this embodiment discloses a self-adjusting floating sealing joint, including a joint body 20 and a sealing adjustment component. The upper part of the joint body 20 is disposed in the mounting hole of the mother body 10. The diameter of the mounting hole is slightly larger than the outer diameter of the upper part of the joint body 20. The sealing adjustment component includes a sealing ring 31 and a connecting cover 32. The connecting cover 32 is fixedly connected to the mounting hole of the mother body 10, and the cross-sectional shape of the connecting cover 32 is annular, with a through hole in its center. The position of the through hole is aligned with the mounting hole, and the diameter of the through hole is the same as the diameter of the mounting hole. The connector body 20 has a shoulder in the middle, which is supported on the connecting cover 32. The lower end of the connector body 20 extends out of the through hole. The upper outer wall of the connector body 20 has an annular groove. The sealing ring 31 is also annular. The sealing ring 31 is fitted on the connector body 20 and located in the groove. The sealing ring 31 is in contact with the inner wall of the groove and is in a compressed state (i.e., the thickness of the sealing ring is greater than the depth of the groove). Since the sealing ring 31 is elastic, the horizontal position of the connector body 20 can be adjusted by squeezing the sealing ring 31.

[0025] In this embodiment, since the diameter of the mounting hole of the mother body 10 is slightly larger than the diameter of the upper part of the connector body 20, a small gap is left between the inner wall of the mounting hole and the outer wall of the connector body 20. Moreover, by setting a sealing ring 31 between the groove on the connector body 20 and the inner wall of the mounting hole, since the sealing ring 31 is elastic, by squeezing the sealing ring, the connector body 20 can automatically adjust its position in the horizontal direction, thereby accurately docking with the sampling port on the sampling plate.

[0026] In this embodiment, the sealing adjustment assembly also includes an elastic support ring 33, which is also annular. The elastic support ring 33 is disposed between the connecting cover 32 and the shoulder (the outer diameter of the shoulder is larger than the diameter of the connector body 20), and is sleeved on the connector body 20 below the shoulder. Under the pressure of the connector body 20, the elastic support ring 33 is in a compressed state to adjust the position of the connector body 20 in the vertical direction, thereby changing the position of the connector body 20 in the vertical direction by external force.

[0027] like Figure 1 As shown, the mounting hole is stepped, with a small-diameter hole at the top and a large-diameter hole at the bottom. The small-diameter hole and the large-diameter hole are connected. The diameter of the through hole and the outer diameter of the connector body 20 are the same as the diameter of the small-diameter hole of the mounting hole. The upper part of the connector body 20 is inside the small-diameter hole, and the shoulder is inside the large-diameter hole of the mounting hole.

[0028] In this embodiment, multiple grooves are provided and are arranged parallel to each other along the axial direction of the connector body 20. The number of sealing rings 31 is the same as the number of grooves. Providing multiple grooves and multiple sealing rings 31 makes it easier and more flexible to adjust the position of the connector body 20.

[0029] In this embodiment, the mounting holes of the connecting cover 32 and the mother body 10 can be connected by threads or pins, or other connection methods can be used to ensure the tightness of the connection between the connecting cover 32 and the mother body 10.

[0030] Specifically, in this embodiment, the sealing ring 31 is an O-ring with a circular cross-sectional shape, and similarly, the elastic support ring 33 has a circular cross-section.

[0031] The self-adjusting floating sealing joint in this embodiment ensures sealing while allowing the joint body 20 to adjust its position in both the horizontal and vertical directions. Furthermore, when two or more joint bodies 20 are used simultaneously, the positional error between the sampling hole and the joint body 20 can be effectively eliminated, making installation very convenient.

[0032] Example 2

[0033] This embodiment discloses a special sampling facility after an accident, including a main body 10 and a self-adjusting floating sealing joint of embodiment 1. The main body 10 is provided with a plurality of parallel and spaced mounting holes, and the distance between two adjacent mounting holes is the same first length. There are a plurality of self-adjusting floating sealing joints corresponding to the number of mounting holes, and one self-adjusting floating sealing joint is installed in one mounting hole.

[0034] In this embodiment, the mother body 10 has two parallel, spaced-apart mounting holes. Correspondingly, two connector bodies 20 are provided, with one connector body 20 installed in each mounting hole. The distance between the two connector bodies 20 is a first length. During the sampling process in a nuclear accident, the connector bodies 20 typically mate with sampling holes on a sampling plate inside the glove box. The sampling plate has multiple equally spaced sampling holes, and the distance between two adjacent sampling holes is a second length. Generally, the first length is the same as the second length, thus ensuring that the two connector bodies 20 can connect to any two adjacent sampling holes. However, due to manufacturing precision and other reasons, there is a slight error between the distance between any two adjacent sampling holes and the second length. Therefore, in the actual sampling process, it is necessary to adjust the horizontal position of the sampling connectors to ensure precise alignment between the two sampling connectors and the two sampling holes.

[0035] When there is a slight difference in the height of the lower ends of the two connector bodies 20, it is necessary to adjust the vertical position of the connector bodies 20 by pressing the elastic support ring 33 so that the lower ends of the two connector bodies 20 are aligned.

[0036] The post-accident sampling facility in this embodiment is applicable to situations where multiple connector bodies 20 are connected to multiple sampling holes. It can appropriately adjust the position of the connector bodies 20 in the horizontal and vertical directions so that multiple connector bodies 20 are accurately connected to multiple sampling holes.

[0037] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A self-adjusting floating sealing joint for use in a sampling plate inside a glove box, characterized in that, Includes the connector body (20) and the sealing adjustment assembly. The upper part of the connector body (20) is disposed in the mounting hole of the mother body (10), and the diameter of the mounting hole is larger than the outer diameter of the upper part of the connector body (20). The sealing adjustment assembly includes a sealing ring (31) and a connecting cover (32). The connecting cover (32) is fixedly connected to the mounting hole of the mother body (10), and the connecting cover (32) has a through hole in the center, the position of which is aligned with the mounting hole. The connector body (20) has a shoulder in the middle, the shoulder is supported on the connecting cover (32), and the lower end of the connector body (20) extends out from the through hole. The upper outer wall of the connector body (20) is provided with a groove, the sealing ring (31) is sleeved on the connector body (20) and disposed in the groove, and the sealing ring (31) is in contact with the inner wall of the groove and is in a squeezed state, so as to adjust the position of the connector body (20) in the horizontal direction, so as to align with the sampling hole on the sampling plate. The sealing adjustment assembly also includes an elastic support ring (33). The elastic support ring (33) is sleeved on the connector body and located between the connecting cover (32) and the shoulder. The elastic support ring (33) is in a compressed state to adjust the position of the connector body (20) in the vertical direction.

2. The self-adjusting floating sealing joint according to claim 1, characterized in that, The mounting holes are stepped, with a small-diameter hole at the top and a large-diameter hole at the bottom. The diameter of the perforation and the outer diameter of the connector body (20) are the same as the diameter of the smaller diameter hole of the mounting hole. The upper part of the connector body (20) is located inside the small-diameter hole, and the shoulder is located inside the large-diameter hole of the mounting hole.

3. The self-adjusting floating sealing joint according to claim 1, characterized in that, The grooves are provided in multiple portions and are arranged parallel to each other along the axial direction of the connector body (20). The number of sealing rings (31) is the same as the number of grooves.

4. The self-adjusting floating sealing joint according to any one of claims 1-3, characterized in that, The connecting cover (32) and the mounting hole of the mother body (10) are connected by a thread or a pin.

5. The self-adjusting floating sealing joint according to any one of claims 1-3, characterized in that, The sealing ring (31) has a circular cross-sectional shape.

6. The self-adjusting floating sealing joint according to any one of claims 1-3, characterized in that, The cross-section of the elastic support ring (33) is circular.

7. A dedicated sampling facility for post-accident procedures, comprising a parent structure (10), characterized in that, It also includes the self-adjusting floating sealing joint according to any one of claims 1-6. The mother body (10) is provided with a plurality of parallel and spaced mounting holes, the distance between two adjacent mounting holes is the same first length, and the number of self-adjusting floating sealing joints is a plurality corresponding to the number of mounting holes, with one self-adjusting floating sealing joint installed in one mounting hole.

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