Mechanical seal transportation device for nuclear power station pump

Abstract

The utility model discloses a mechanical seal transportation device for a nuclear power station pump, a mechanical seal comprises a seal main body, a mechanical seal static ring seat and a mechanical seal shaft sleeve, and the mechanical seal transportation device comprises a support frame, a first fastening assembly, a second fastening assembly, a fixing plate and a buffer block. According to the mechanical seal transportation device for the nuclear power station pump, by arranging the supporting frame, the first fastening assembly, the second fastening assembly, the fixing plate and the buffer block, a static assembly and a rotating assembly of a mechanical seal are firmly combined into a whole, and large external impact can be resisted; and by arranging the supporting frame, a stable protection structure boundary can be formed on the periphery of the mechanical seal, and it is guaranteed that the mechanical seal cannot be collided by other objects in the transportation process. The mechanical seal transportation device for the nuclear power station pump is simple in structure and simple in installation and use process, the stability of mechanical seal transportation can be improved after use, the probability that the mechanical seal is damaged due to transportation is reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical seal transportation for nuclear power plant pumps, in particular to a mechanical seal transportation device for nuclear power plant pumps. Background Art

[0002] Mechanical seals are the most common type of seal for rotating shafts. They are usually used for liquid seals, such as centrifugal pumps; they are also used for gas seals, such as compressors and agitators. Mechanical seals are precision mechanical equipment and are easily loosened and damaged by impact during transportation. Figure 1 As shown in the figure, before the mechanical seal is installed on the equipment, the stationary ring assembly and the dynamic ring assembly are combined into a whole using screws and locking plates. The stationary ring assembly and the dynamic ring assembly will maintain stable contact under the action of spring force, which is convenient for transportation and can ensure that the dynamic ring assembly and the stationary ring assembly of the mechanical seal will not loosen during transportation. However, even so, due to the limited fastening strength of the screws and locking plates, there is a risk of loosening during transportation. In addition, there is a lack of protection around the mechanical seal, and there is also a risk of collision damage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a mechanical seal transportation device for a nuclear power plant pump.

[0004] The utility model solves the technical problem by adopting the following technical solution: constructing a mechanical seal transport device for a nuclear power plant pump, wherein the mechanical seal comprises a seal body, a mechanical seal static ring seat and a mechanical seal shaft sleeve, and comprises a support frame, a first fastening assembly, a second fastening assembly, a fixing plate and a buffer block;

[0005] The support frame includes a bottom plate for supporting the sealing body, a plurality of support beams connected to the bottom plate, and a support plate connected to the upper ends of the plurality of support beams and used to support the mechanical seal static ring seat, and a through hole for the sealing body to pass through is opened on the support plate;

[0006] The fixing plate is installed on the upper end surface of the mechanical seal static ring seat and inserted into the slot of the mechanical seal shaft sleeve, and the first fastening assembly fixes the support plate, the mechanical seal static ring seat and the fixing plate together;

[0007] The buffer block is mounted on the bottom plate and abuts against the side surface of the lower portion of the machine seal sleeve. The second fastening assembly is mounted on the support beam and presses the buffer block to compress the machine seal sleeve.

[0008] In some embodiments, a first through hole is formed on the fixing plate, and a second through hole is formed on the supporting plate. The first through hole and the second through hole are both arranged corresponding to the through hole of the static ring seat of the mechanical seal.

[0009] In some embodiments, the first fastening assembly includes a first locking member, a second locking member, and a fixing rod;

[0010] The fixing rod is passed through the first through hole, the through hole and the second through hole, the first locking member is installed above the fixing plate and connected to the first end of the fixing rod, and the second locking member is installed below the supporting plate and connected to the second end of the fixing rod.

[0011] In some embodiments, the first locking member and the second locking member are both locking nuts, and the first locking member and the second locking member are both threadedly connected to the fixing rod.

[0012] In some embodiments, there are two fixing plates, and an accommodation space for accommodating the mechanical seal sleeve is formed between the two fixing plates.

[0013] In some embodiments, the second fastening assembly includes a retaining member, the support beam is provided with a connecting hole for the retaining member to pass through, and one end of the retaining member is connected to the buffer block.

[0014] In some embodiments, the buffer block is provided with a connecting portion for connecting the retaining member.

[0015] In some embodiments, the number of the buffer blocks is two, each of the buffer blocks is provided with two connecting parts, and the number of the retaining members is four.

[0016] In some embodiments, the support frame further includes a protective beam connected to the support beam, and the protective beam is located between the base plate and the support plate.

[0017] In some embodiments, the plurality of support beams are welded to the bottom plate, and the support plate is welded to the upper ends of the plurality of support beams.

[0018] The implementation of the utility model has the following beneficial effects: the mechanical seal transport device for nuclear power plant pumps firmly combines the stationary component and the rotating component of the mechanical seal into a whole by setting a support frame, a first fastening component, a second fastening component, a fixing plate and a buffer block, and can resist large external impacts. The support frame can form a stable protective structure boundary around the mechanical seal to ensure that the mechanical seal will not be collided with other objects during transportation. The mechanical seal transport device for nuclear power plant pumps has a simple structure and a simple installation and use process. After use, it can increase the stability of the mechanical seal transportation, reduce the probability of the mechanical seal being damaged due to transportation, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of a mechanical seal;

[0021] Figure 2 It is a half-section view of the overall structure of the mechanical seal transport device for nuclear power plant pumps of the utility model;

[0022] Figure 3 It is a top view of the structure of the mechanical seal transport device for nuclear power plant pumps loaded with the mechanical seal of the utility model;

[0023] Figure 4 It is a top view of the structure of the mechanical seal transport device for nuclear power plant pumps of the utility model when the mechanical seal is not loaded;

[0024] Figure 5 This is a structural front view of the support frame of the utility model;

[0025] Figure 6 It is a top view of the structure of the support frame of the utility model;

[0026] Figure 7 It is a structural schematic diagram of a fixing plate of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the buffer block of the utility model. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0029] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] Reference Figures 2 to 8 , is a mechanical seal transport device for a nuclear power plant pump in some embodiments of the utility model, the mechanical seal comprises a seal body 11, a mechanical seal static ring seat 12 and a mechanical seal sleeve 13, specifically, as Figure 1 As shown, the mechanical seal includes a stationary ring assembly and a dynamic ring assembly. Before the mechanical seal is installed on the equipment, the stationary ring assembly and the dynamic ring assembly are combined into a whole using screws and locking plates. The stationary ring assembly and the dynamic ring assembly will maintain stable contact under the action of the spring force, which is convenient for transportation and can ensure that the dynamic ring assembly and the stationary ring assembly of the mechanical seal will not loosen during transportation. Due to the limited fastening strength of the screws and locking plates, there is a risk of loosening during transportation. In addition, the mechanical seal lacks protection around it and there is also a risk of collision damage. In this embodiment, a mechanical seal transportation device for nuclear power plant pumps is constructed to solve the above problems. Among them, the mechanical seal stationary ring seat 12 is a part of the stationary ring assembly, which is in a static and fixed state relative to the seal body 11, and the mechanical seal shaft sleeve 13 is a part of the dynamic ring assembly, which is rotatable relative to the seal body 11.

[0031] Specifically, the mechanical seal transport device for nuclear power plant pumps includes a support frame 2, a first fastening assembly 3, a second fastening assembly 4, a fixing plate 5 and a buffer block 6. Figure 5 and Figure 6As shown, the support frame 2 includes a bottom plate 21 for supporting the sealing body 11, a plurality of support beams 22 connected to the bottom plate 21, and a support plate 23 connected to the upper ends of the plurality of support beams 22 and used to support the mechanical seal static ring seat 12. The support plate 23 is provided with a through hole 231 for the sealing body 11 to penetrate. The support frame 2 is used to support and position the mechanical seal as a whole. Among them, the plurality of support beams 22 are welded to the bottom plate 21, and the support plate 23 is welded to the upper ends of the plurality of support beams 22. The support frame 2 is generally a square frame, which is a cube welded by stainless steel. The support frame 2 also includes a protective crossbeam 24 connected to the support beam 22. The protective crossbeam 24 is located between the bottom plate 21 and the support plate 23. The protective crossbeam 24 is welded to the adjacent support beam 22. The protective crossbeam 24 is specifically welded to the middle position of the support beam 22, which can protect the mechanical seal as a whole and prevent other objects from colliding with the mechanical seal.

[0032] The fixing plate 5 is installed on the upper end surface of the machine seal static ring seat 12 and inserted into the slot of the machine seal sleeve 13. The slot of the machine seal sleeve 13 is located at the upper part of the machine seal sleeve 13. The fixing plate 5 is inserted into the slot of the machine seal sleeve 13 to position the machine seal sleeve 13. The first fastening assembly 3 fixes the support plate 23, the machine seal static ring seat 12 and the fixing plate 5 together, completing the fixing of the overall relative position of the support plate 23, the machine seal static ring seat 12 and the fixing plate 5. In this embodiment, there are two fixing plates 5, and an accommodation space for accommodating the machine seal sleeve 13 is formed between the two fixing plates 5. The fixing plate 5 has an arc portion that matches the slot of the machine seal sleeve 13, so that the two fixing plates 5 can jointly position and fix the machine seal sleeve 13.

[0033] like Figure 2 As shown, a first through hole 51 is provided on the fixing plate 5, and a second through hole 232 is provided on the supporting plate 23. The first through hole 51 and the second through hole 232 are both arranged corresponding to the through hole of the mechanical seal static ring seat 12. In addition, the first fastening assembly 3 includes a first locking member 31, a second locking member 32 and a fixing rod 33. The fixing rod 33 is penetrated by the first through hole 51, the through hole and the second through hole 232. The first locking member 31 is installed above the fixing plate 5 and is connected to the first end of the fixing rod 33. The second locking member 32 is installed below the supporting plate 23 and is connected to the second end of the fixing rod 33.

[0034] In this embodiment, if Figure 6 and Figure 7As shown, each fixing plate 5 has two first through holes 51, and the supporting plate 23 has four second through holes 232 corresponding to the first through holes 51. The first locking member 31, the second locking member 32 and the fixing rod 33 work together to fix the supporting plate 23, the mechanical seal static ring seat 12 and the fixing plate 5 together, and because the fixing plate 5 is inserted into the slot of the mechanical seal shaft sleeve 13, the position of the mechanical seal shaft sleeve 13 is also fixed at the same time. Among them, the first locking member 31 and the second locking member 32 are both locking nuts, and the first locking member 31 and the second locking member 32 are all threadedly connected to the fixing rod 33.

[0035] In addition, the buffer block 6 is mounted on the bottom plate 21 and abuts against the side of the lower part of the mechanical seal sleeve 13, and the second fastening assembly 4 is mounted on the support beam 22 and squeezes the buffer block 6 to compress the mechanical seal sleeve 13. The buffer block 6 can be made of a relatively soft material, and the relatively soft material can be rubber, which is soft, elastic, and wear-resistant, and can protect the mechanical seal from damage as a whole and reduce the impact force. At the same time, the buffer block 6 also positions the lower part of the mechanical seal sleeve 13 in the lateral direction.

[0036] The second fastening assembly 4 includes a retaining member 41. A connecting hole 221 is provided on the support beam 22 for the retaining member 41 to pass through. The retaining member 41 is threadedly connected to the connecting hole 221. One end of the retaining member 41 is connected to the buffer block 6. The buffer block 6 is provided with a connecting portion 61 for the retaining member 41 to connect. After one end of the retaining member 41 is connected to the connecting portion 61 of the buffer block 6, the buffer block 6 can be pressed against the side of the lower part of the mechanical seal static ring seat 12 by screwing the retaining member 41. The retaining member 41 can be a bolt. In this embodiment, Figure 8 As shown, there are two buffer blocks 6, each of which has an arc portion that matches the shape of the lower portion of the mechanical seal static ring seat 12, and each buffer block 6 is provided with two connecting portions 61. There are four retaining members 41, and the four retaining members 41 simultaneously lock the buffer block 6, further enhancing the stability of the connection.

[0037] In summary, the nuclear power plant pump mechanical seal transport device firmly combines the stationary component and the rotating component of the mechanical seal into a whole by setting the support frame 2, the first fastening component 3, the second fastening component 4, the fixing plate 5 and the buffer block 6, and can resist large external impacts. By setting the support frame 2, a stable protective structure boundary can be formed around the mechanical seal to ensure that the mechanical seal will not be collided with other objects during transportation. The nuclear power plant pump mechanical seal transport device has a simple structure and a simple installation and use process. After use, it can increase the stability of the mechanical seal transportation, reduce the probability of the mechanical seal being damaged due to transportation, and save costs.

[0038] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A mechanical seal transport device for a nuclear power plant pump, the mechanical seal comprising a seal body (11), a mechanical seal static ring seat (12) and a mechanical seal shaft sleeve (13), characterized in that: It comprises a support frame (2), a first fastening assembly (3), a second fastening assembly (4), a fixing plate (5) and a buffer block (6); The support frame (2) comprises a bottom plate (21) for supporting the sealing body (11), a plurality of support beams (22) connected to the bottom plate (21), and a support plate (23) connected to the upper ends of the plurality of support beams (22) and used for supporting the mechanical seal static ring seat (12), wherein the support plate (23) is provided with a penetration hole (231) for the sealing body (11) to penetrate; The fixing plate (5) is mounted on the upper end surface of the mechanical seal static ring seat (12) and inserted into the slot of the mechanical seal shaft sleeve (13); the first fastening assembly (3) fixes the support plate (23), the mechanical seal static ring seat (12) and the fixing plate (5) together; The buffer block (6) is mounted on the bottom plate (21) and abuts against the side surface of the lower portion of the machine seal sleeve (13); the second fastening assembly (4) is mounted on the support beam (22) and squeezes the buffer block (6) to compress the machine seal sleeve (13).

2. The mechanical seal transport device for nuclear power plant pump according to claim 1, characterized in that: The fixing plate (5) is provided with a first through hole (51), and the supporting plate (23) is provided with a second through hole (232); the first through hole (51) and the second through hole (232) are both arranged corresponding to the through hole of the mechanical seal static ring seat (12).

3. The mechanical seal transport device for nuclear power plant pump according to claim 2, characterized in that: The first fastening assembly (3) comprises a first locking member (31), a second locking member (32) and a fixing rod (33); The fixing rod (33) is inserted into the first through hole (51), the through hole and the second through hole (232); the first locking member (31) is installed above the fixing plate (5) and connected to the first end of the fixing rod (33); the second locking member (32) is installed below the supporting plate (23) and connected to the second end of the fixing rod (33).

4. The mechanical seal transport device for nuclear power plant pumps according to claim 3, characterized in that: The first locking member (31) and the second locking member (32) are both locking nuts, and the first locking member (31) and the second locking member (32) are both threadedly connected to the fixing rod (33).

5. The mechanical seal transport device for nuclear power plant pumps according to claim 2, characterized in that: There are two fixing plates (5), and an accommodation space for accommodating the machine seal shaft sleeve (13) is formed between the two fixing plates (5).

6. The mechanical seal transport device for nuclear power plant pumps according to claim 1, characterized in that: The second fastening assembly (4) comprises a retaining member (41), a connecting hole (221) for the retaining member (41) to pass through is provided on the support beam (22), and one end of the retaining member (41) is connected to the buffer block (6).

7. The mechanical seal transport device for nuclear power plant pumps according to claim 6, characterized in that: The buffer block (6) is provided with a connecting portion (61) for connecting the retaining member (41).

8. The mechanical seal transport device for nuclear power plant pumps according to claim 7, characterized in that: The number of the buffer blocks (6) is two, each of the buffer blocks (6) is provided with two connecting parts (61), and the number of the retaining members (41) is four.

9. The mechanical seal transport device for nuclear power plant pumps according to claim 1, characterized in that: The support frame (2) further comprises a protective crossbeam (24) connected to the support beam (22), wherein the protective crossbeam (24) is located between the bottom plate (21) and the support plate (23).

10. The mechanical seal transportation device for nuclear power plant pump according to claim 1, characterized in that: The plurality of support beams (22) are welded to the bottom plate (21), and the support plate (23) is welded to the upper ends of the plurality of support beams (22).

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