Pressure vessel sealing ring tool

Abstract

The utility model discloses a pressure vessel sealing ring tool which comprises an annular cover plate and an annular bracket, the annular cover plate is detachably installed on the annular bracket, an annular containing space is formed between the annular bracket and the annular cover plate, and the annular cover plate and the annular bracket are provided with center holes. A center hole of the annular cover plate and a center hole of the annular bracket are communicated with each other to form a center through hole, the pressure vessel sealing ring tool further comprises a supporting structure, the supporting structure comprises a plurality of first supporting rods, the first supporting rods are arranged in parallel at intervals in the first direction, each first supporting rod extends in the second direction, and the first direction is perpendicular to the second direction. The two ends, in the second direction, of each first supporting rod are located on the outer side of the center through hole, and the two ends of each first supporting rod are fixedly connected with the bottom wall of the annular bracket. The supporting structure strengthens the supporting of the pressure vessel sealing ring tool, and protects the pressure vessel sealing ring tool from being easily deformed due to radial force.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation and storage of sealing rings of pressure vessels, in particular to a tooling for sealing rings of pressure vessels. Background Art

[0002] The reactor pressure vessel (RPV) is the core equipment of the nuclear island of a pressurized water reactor (PWR) nuclear power plant. It serves as the pressure boundary, containing the reactor coolant and is typically sealed by ring seals. These rings are made of alloy and silver-plated. Deformation of the rings or scratches on the silver plating during transport or storage can directly affect the primary coolant seal, posing significant risks to the operational safety of the nuclear power plant and causing significant economic losses.

[0003] In the prior art, a pressure vessel sealing ring transportation and storage device is provided with a circular cover plate, a cover pad, an EVA pad, a rubber storage base and a lifting support plate. The sealing ring can be placed between the cover plate and the rubber storage base, and the sealing ring is protected by the cover pad and the EVA pad.

[0004] This pressure vessel sealing ring transport and storage device provides a lifting point by welding a discontinuous circular ring-shaped lifting support plate under the rubber storage base. The pressure vessel sealing ring transport and storage device has the problem of weak ability to withstand radial force and easy deformation during transportation and storage. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure vessel sealing ring fixture, which can strengthen the support for the pressure vessel sealing ring, so that the pressure vessel sealing ring fixture is not easily deformed by radial force during transportation and storage, thereby protecting the internal sealing ring.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A pressure vessel sealing ring tooling is provided, which includes an annular cover plate and an annular bracket arranged in sequence from top to bottom, the annular cover plate is detachably mounted on the annular bracket, an annular accommodating space is formed between the annular bracket and the annular cover plate, and the accommodating space is used to store the sealing ring, the annular cover plate and the annular bracket are both provided with a center hole, and the center hole of the annular cover plate and the center hole of the annular bracket are interconnected to form a center through hole, wherein the pressure vessel sealing ring tooling also includes a support structure, the support structure includes a plurality of first support rods, the plurality of first support rods are arranged in parallel and spaced apart along a first direction, each first support rod extends along a second direction, the first direction and the second direction are perpendicular, the two ends of each first support rod along the second direction are respectively located on the outside of the center through hole, and the two ends of each first support rod are fixedly connected to the bottom wall of the annular bracket.

[0008] Preferably, the support structure also includes multiple second support rods, which extend along the first direction. Any two adjacent first support rods are connected by multiple second support rods, and the multiple second support rods between any two adjacent first support rods are arranged in parallel and spaced apart along the second direction.

[0009] Preferably, the support structure also includes a plurality of third support rods, one end of a part of the third support rods is connected to a first support rod located at one end of the first direction among the plurality of first support rods, and the other end is fixedly connected to the bottom wall of the annular bracket; one end of another part of the third support rods is connected to a first support rod located at the other end of the first direction among the plurality of first support rods, and the other end is fixedly connected to the bottom wall of the annular bracket.

[0010] Preferably, the plurality of third support rods all extend along the first direction, and the plurality of third support rods are arranged in parallel and at intervals along the second direction.

[0011] Preferably, the annular bracket is symmetrical about the first plane along the first direction and about the second plane along the second direction, and the supporting structure is symmetrical about the first plane along the first direction and about the second plane along the second direction.

[0012] Preferably, the inner surface of the accommodating space is provided with a protective layer, which is made of a flexible material.

[0013] Preferably, the pressure vessel sealing ring tooling further includes a plurality of locking mechanisms, which are used to lock the relative positions of the annular cover plate and the annular bracket, and the plurality of locking mechanisms are arranged at intervals along the circumference of the annular cover plate and the annular bracket.

[0014] Preferably, each locking mechanism includes a U-shaped clamp and a locking bolt, the U-shaped clamp includes a first plate, a second plate and a third plate, the first plate and the third plate are arranged in parallel and spaced apart, the second plate is connected between the first plate and the third plate, the first plate, the second plate and the third plate are arranged to form a U-shaped groove, the annular cover plate and the annular bracket are both accommodated in the U-shaped groove, the first plate is in contact with the top wall of the annular cover plate, the third plate is in contact with the bottom wall of the annular bracket, the locking bolt passes through the first plate and is screwed to the third plate, and the locking bolt closes the notch of the U-shaped groove.

[0015] Preferably, each locking mechanism further comprises a locking nut, which is threaded onto the screw rod of the locking bolt and is in contact with the third plate.

[0016] Preferably, the annular bracket and the annular cover plate are both waist-round.

[0017] The beneficial effect of the utility model is that it provides a pressure vessel sealing ring tooling, which is provided with a support structure, the support structure strengthens the support for the pressure vessel sealing ring tooling, and protects the pressure vessel sealing ring tooling from being easily deformed by radial force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an assembly drawing of the pressure vessel sealing ring tooling provided by the utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the pressure vessel sealing ring tooling provided by the utility model;

[0020] Figure 3 This is an exploded view of the pressure vessel sealing ring tooling provided by the utility model;

[0021] Figure 4 The utility model is a structural schematic diagram of the locking mechanism of the pressure vessel sealing ring tooling provided by the present invention.

[0022] In the figure: 1. Annular cover plate; 2. Annular bracket; 3. Support structure; 31. First support rod; 32. Second support rod; 33. Third support rod; 4. Protective layer; 5. Locking mechanism; 51. U-shaped splint; 511. First plate; 512. Second plate; 513. Third plate; 52. Locking bolt; 53. Locking nut. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0024] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0027] Please refer to Figure 1 and Figure 3 , this embodiment provides a pressure vessel sealing ring tooling, which includes an annular cover plate 1 and an annular bracket 2 arranged in sequence from top to bottom, the annular cover plate 1 is detachably mounted on the annular bracket 2, and an annular accommodating space is formed between the annular bracket 2 and the annular cover plate 1, and the accommodating space is used to store the sealing ring, the annular cover plate 1 and the annular bracket 2 are both provided with a center hole, and the center hole of the annular cover plate 1 and the center hole of the annular bracket 2 are connected to each other to form a center through hole, wherein the pressure vessel sealing ring tooling also includes a support structure 3, the support structure 3 includes a plurality of first support rods 31, the plurality of first support rods 31 are arranged in parallel and spaced apart along a first direction, each first support rod 31 extends along a second direction, the first direction and the second direction are perpendicular, the two ends of each first support rod 31 along the second direction are respectively located on the outside of the center through hole, and the two ends of each first support rod 31 are fixedly connected to the bottom wall of the annular bracket 2. With this arrangement, the annular cover plate 1 and the annular bracket 2 are both provided with grooves to form a storage space. When the sealing ring needs to be transported or stored, the sealing ring is accommodated between the annular bracket 2 and the annular cover plate 1. This ensures that the sealing ring is contained within the pressure vessel sealing ring fixture during storage and transport and is not affected by the external environment. At the same time, the provision of the first support rod 31 strengthens the support effect of the pressure vessel sealing ring fixture along the second direction. When the pressure vessel sealing ring fixture is subjected to a radial force along the second direction, the first support rod 31 can play a supporting role, ensuring that the pressure vessel sealing ring fixture is not easily deformed by the radial force along the second direction, thereby protecting the sealing ring inside the pressure vessel sealing ring fixture.

[0028] Preferably, the annular bracket 2 and the annular cover plate 1 are both made of stainless steel and polished smooth. This arrangement makes the surface of the pressure vessel sealing ring tooling smooth and not easy to absorb stains, making it easy to clean and decontaminate. The annular bracket 2 and the annular cover plate 1 have high structural strength and are not easy to corrode, thereby better protecting the sealing ring inside the pressure vessel sealing ring tooling from the influence of the external environment.

[0029] Alternatively, see Figure 1 and Figure 3 The support structure 3 further includes a plurality of second support rods 32 extending along the first direction. Any two adjacent first support rods 31 are connected by the plurality of second support rods 32. The plurality of second support rods 32 are spaced parallel to each other along the second direction between any two adjacent first support rods 31. This arrangement provides support for any two adjacent first support rods 31. The plurality of second support rods 32 spaced parallel to each other along the second direction ensures uniform force between any two adjacent first support rods 31, preventing deformation of the first support rods 31 caused by radial force along the first direction, and enhancing the support effect of the pressure vessel sealing ring fixture along the first direction.

[0030] Alternatively, see Figure 1 and Figure 3 The support structure 3 also includes a plurality of third support rods 33. One end of some of the third support rods 33 is connected to a first support rod 31 located at one end of the plurality of first support rods 31 in the first direction, and the other end is fixedly connected to the bottom wall of the annular bracket 2. Another end of the third support rods 33 is connected to a first support rod 31 located at the other end of the plurality of first support rods 31 in the first direction, and the other end is fixedly connected to the bottom wall of the annular bracket 2. This arrangement strengthens the support between the first support rods 31 at both ends of the first direction and the bottom wall of the annular bracket 2, and when subjected to radial force in the first direction, the pressure vessel sealing ring fixture is less likely to deform.

[0031] Optionally, the plurality of third support rods 33 all extend along the first direction, and the plurality of third support rods 33 are arranged in parallel and spaced apart along the second direction. With this arrangement, when the pressure vessel sealing ring fixture is subjected to a radial force in the first direction, the force is evenly applied between the first support rods 31 at both ends along the first direction and the bottom wall of the annular bracket 2, thereby preventing the pressure vessel sealing ring fixture from being deformed due to excessive radial force in the first direction and enhancing the support effect of the pressure vessel sealing ring fixture in the first direction.

[0032] Preferably, the support structure 3 is welded from a steel pipe and welded to the bottom wall of the annular bracket 2. The inner diameter of the steel pipe is 50-60 mm. This arrangement increases the structural strength of the support structure 3 and provides a better support effect. Furthermore, the connections between the first support rod 31, the second support rod 32, and the third support rod 33 can all serve as lifting points for the pressure vessel sealing ring fixture. With this arrangement, when the sealing ring needs to be transported and hoisted, the lifting points on the support structure 3 can serve as the lifting force points, avoiding direct hoisting on the annular bracket 2. When the various lifting points are subjected to uneven force, the annular bracket 2 is less likely to deform.

[0033] Optionally, the annular bracket 2 is arranged along the first direction with respect to the first plane (eg Figure 3 and the annular bracket 2 is symmetrical along the second direction with respect to the second plane (as shown in S1 in FIG. Figure 3 The support structure 3 is symmetrical about the first plane along the first direction, and the support structure 3 is symmetrical about the second plane along the second direction. Such an arrangement ensures that the support structure 3 can provide evenly distributed supporting force to the annular bracket 2 when subjected to radial forces in the first and second directions, further strengthening the supporting effect of the support structure 3, ensuring that the pressure vessel sealing ring fixture is not easily deformed by radial forces, and thus protecting the sealing ring inside the pressure vessel sealing ring fixture from damage. Preferably, the multiple lifting points for lifting are symmetrically arranged about the first plane along the first direction, and the annular bracket 2 is symmetrically arranged about the second plane along the second direction.

[0034] Optionally, the support structure 3 may also be in an I-shape, a X-shape, or a M-shape. It should be understood that the present invention does not limit the specific shape of the support structure 3, and this embodiment and the accompanying drawings are only schematic illustrations of the shape of the support structure 3.

[0035] Alternatively, see Figure 2 The inner surface of the storage space is provided with a protective layer 4 made of a flexible material. This configuration protects the sealing ring within the storage space, preventing damage from scratching the ring bracket 2 or the annular cover plate 1 during transport. Preferably, protective layer 4 may be made of velvet, rubber pads, sponge pads, etc.

[0036] Alternatively, see Figure 1 and Figure 4The pressure vessel sealing ring fixture also includes multiple locking mechanisms 5, which are used to lock the relative positions of the annular cover plate 1 and the annular bracket 2. The multiple locking mechanisms 5 are arranged at intervals along the circumference of the annular cover plate 1 and the annular bracket 2. This arrangement ensures that the annular cover plate 1 will not be accidentally opened during the transportation of the pressure vessel sealing ring fixture, ensuring that the sealing ring is always contained within the pressure vessel sealing ring fixture during storage and transportation and is not affected by the external environment, thereby enhancing the reliability of the pressure vessel sealing ring fixture.

[0037] Alternatively, see Figure 4 Each locking mechanism 5 includes a U-shaped clamping plate 51 and a locking bolt 52. The U-shaped clamping plate 51 includes a first plate 511, a second plate 512 and a third plate 513. The first plate 511 and the third plate 513 are arranged in parallel and spaced apart. The second plate 512 is connected between the first plate 511 and the third plate 513. The first plate 511, the second plate 512 and the third plate 513 are arranged to form a U-shaped groove. The annular cover plate 1 and the annular bracket 2 are both accommodated in the U-shaped groove. The first plate 511 is in contact with the top wall of the annular cover plate 1, and the third plate 513 is in contact with the bottom wall of the annular bracket 2. The locking bolt 52 passes through the first plate 511 and is screwed to the third plate 513, and the locking bolt 52 closes the notch of the U-shaped groove. With this arrangement, the annular bracket 2 and the annular tooling fit tightly together and are housed within the U-shaped groove. The annular cover plate 1 is mounted on the annular bracket 2 and prevents accidental opening, ensuring that the sealing ring is not affected by the external environment during storage and transportation, and preventing the sealing ring from being scratched and damaged. In other embodiments, the first plate 511 and the third plate 513 of the U-shaped clamping plate 51 can also fit closely to the side walls of the annular cover plate 1 and the side walls of the annular bracket 2, respectively.

[0038] Optionally, each locking mechanism 5 further includes a locking nut 53, which is threaded onto the screw of the locking bolt 52 and engages with the third plate 513. This arrangement prevents the connection between the locking bolt 52 and the U-shaped clamping plate 51 from loosening, further ensuring that the annular cover 1 does not accidentally open during storage and transport. Preferably, a spring washer is provided between the third plate 513 and the locking nut 53.

[0039] In other embodiments, the locking mechanism 5 may also include a clip arranged on the side wall of the annular cover 1, and a corresponding snap groove arranged on the side wall of the annular bracket 2. Each clip on the annular cover 1 can be snapped into the corresponding snap groove on the annular bracket 2, thereby locking the annular cover 1 and the annular bracket 2 to ensure that the annular cover 1 will not be accidentally opened during storage and transportation.

[0040] Alternatively, see Figure 1 and Figure 3The annular bracket 2 and the annular cover plate 1 are both waist-round. Waist-round refers to a closed figure formed by dividing a circle into two semicircular arcs through the center of the circle and translating them in opposite directions, and connecting the endpoints of the two semicircular arcs with two equal-length parallel lines. With this arrangement, compared with the perfect circular structure, the size of the pressure vessel sealing ring fixture along the second direction is reduced. During the transportation of the sealing ring, the pressure vessel sealing ring fixture has better passability and is easier to pass through lifting holes or equipment gates, etc., without being easily bumped.

[0041] The method of using the pressure vessel sealing ring tooling provided by the utility model is as follows:

[0042] When storing the sealing ring, first open the annular cover plate 1 and put the sealing ring into the accommodation space between the annular bracket 2 and the annular cover plate 1, then replace the annular cover plate 1, and finally install the U-shaped clamping plate 51 along the circumferential interval of the annular cover plate 1 and the annular bracket 2, and lock the annular cover plate 1 and the annular bracket 2 with the locking bolt 52 and the locking nut 53 to ensure that the annular cover plate 1 will not be accidentally opened during storage and transportation; when transporting the sealing ring, use the connection between the first support rod 31, the second support rod 32 and the third support rod 33 as the lifting point, and lift the lifting rod 51 to the lifting point. The installation equipment is connected to at least some of the lifting points, and the pressure vessel sealing ring tooling is transferred to the storage location for storage. During lifting, ensure that the selected lifting points are symmetrical about the first plane along the first direction, and symmetrical about the second plane along the second direction, so as to ensure that each lifting point is evenly stressed, and avoid deformation of the pressure vessel sealing ring tooling due to uneven stress; when the sealing ring inside the pressure vessel sealing ring tooling needs to be replaced or used, first unscrew the locking nut 53 and remove the locking bolt 52, disassemble the U-shaped clamp 51, and then open the annular cover 1 to take out the sealing ring.

[0043] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A pressure vessel sealing ring tooling, comprising an annular cover plate (1) and an annular bracket (2) arranged in sequence from top to bottom, wherein the annular cover plate (1) is detachably mounted on the annular bracket (2), an annular accommodation space is formed between the annular bracket (2) and the annular cover plate (1), and the accommodation space is used to store the sealing ring, the annular cover plate (1) and the annular bracket (2) are both provided with a center hole, and the center hole of the annular cover plate (1) and the center hole of the annular bracket (2) are interconnected to form a center through hole, characterized in that: The pressure vessel sealing ring fixture further comprises a support structure (3), wherein the support structure (3) comprises a plurality of first support rods (31), wherein the plurality of first support rods (31) are arranged in parallel and spaced apart along a first direction, each of the first support rods (31) extends along a second direction, the first direction and the second direction are perpendicular, and both ends of each first support rod (31) along the second direction are respectively located outside the central through hole, and both ends of each first support rod (31) are fixedly connected to the bottom wall of the annular bracket (2).

2. The pressure vessel sealing ring fixture according to claim 1, characterized in that: The support structure (3) further comprises a plurality of second support rods (32), wherein the plurality of second support rods (32) extend along the first direction, any two adjacent first support rods (31) are connected via the plurality of second support rods (32), and the plurality of second support rods (32) between any two adjacent first support rods (31) are arranged in parallel and spaced apart along the second direction.

3. The pressure vessel sealing ring fixture according to claim 2, characterized in that: The support structure (3) further comprises a plurality of third support rods (33), one end of a portion of the third support rods (33) being connected to one of the plurality of first support rods (31) located at one end of the first direction, and the other end being fixedly connected to the bottom wall of the annular bracket (2); one end of another portion of the third support rods (33) being connected to one of the plurality of first support rods (31) located at the other end of the first direction, and the other end being fixedly connected to the bottom wall of the annular bracket (2).

4. The pressure vessel sealing ring fixture according to claim 3, characterized in that: The plurality of third support rods (33) all extend along the first direction, and the plurality of third support rods (33) are arranged in parallel and at intervals along the second direction.

5. The pressure vessel sealing ring fixture according to claim 4, characterized in that: The annular bracket (2) is symmetrical about a first plane along the first direction, and the annular bracket (2) is symmetrical about a second plane along the second direction, the supporting structure (3) is symmetrical about the first plane along the first direction, and the supporting structure (3) is symmetrical about the second plane along the second direction.

6. The pressure vessel sealing ring tooling according to claim 1, characterized in that: The inner surface of the accommodating space is provided with a protective layer (4), and the protective layer (4) is made of a flexible material.

7. The pressure vessel sealing ring fixture according to claim 1, characterized in that: The pressure vessel sealing ring fixture further comprises a plurality of locking mechanisms (5), the plurality of locking mechanisms (5) being used to lock the relative positions of the annular cover plate (1) and the annular bracket (2), and the plurality of locking mechanisms (5) being arranged at intervals along the circumference of the annular cover plate (1) and the annular bracket (2).

8. The pressure vessel sealing ring fixture according to claim 7, characterized in that: Each locking mechanism (5) includes a U-shaped clamping plate (51) and a locking bolt (52), wherein the U-shaped clamping plate (51) includes a first plate (511), a second plate (512) and a third plate (513), wherein the first plate (511) and the third plate (513) are arranged in parallel and spaced apart, and the second plate (512) is connected between the first plate (511) and the third plate (513), and the first plate (511), the second plate (512) and the third plate (513) are arranged in parallel and spaced apart. The third plate (513) is arranged to form a U-shaped groove, and the annular cover plate (1) and the annular bracket (2) are both accommodated in the U-shaped groove. The first plate (511) is in contact with the top wall of the annular cover plate (1), and the third plate (513) is in contact with the bottom wall of the annular bracket (2). The locking bolt (52) passes through the first plate (511) and is screwed to the third plate (513), and the locking bolt (52) closes the notch of the U-shaped groove.

9. The pressure vessel sealing ring fixture according to claim 8, characterized in that: Each locking mechanism (5) further comprises a locking nut (53), wherein the locking nut (53) is screwed onto the screw rod of the locking bolt (52) and the locking nut (53) is in contact with the third plate (513).

10. The pressure vessel sealing ring fixture according to any one of claims 1 to 9, characterized in that: The annular bracket (2) and the annular cover plate (1) are both waist-round.

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