Sealing oil baffle disc structure

Abstract

The utility model discloses a sealing oil baffle disc structure and relates to the field of circulating pumps, the sealing oil baffle disc structure comprises an oil baffle disc body and a first sealing ring, a through hole is formed in the oil baffle disc body, the first sealing ring is arranged in the oil baffle disc body, the oil baffle disc body comprises a first disc body and a second disc body, and the first disc body and the second disc body are coaxially, detachably and fixedly installed; a first mounting ring groove is formed in the side wall, close to the second disc body, of the first disc body, a second mounting ring groove is formed in the side wall, close to the first disc body, of the second disc body, and the first sealing ring is located in the first mounting ring groove and the second mounting ring groove. By means of the first disc body and the second disc body, when the first sealing ring of the gear oil disc needs to be replaced, the gear oil disc is disassembled and taken down from the pump shaft, then the first disc body and the second disc body are disassembled and separated, at the moment, the first mounting ring groove and the second mounting ring groove are separated, and then the first sealing ring can be rapidly taken out and replaced with a new first sealing ring; and therefore, the first sealing ring of the oil baffle disc can be replaced conveniently.

Description

Technical Field

[0001] The present application relates to the field of circulating pumps, and in particular to a sealing oil baffle plate structure. Background Art

[0002] The circulating pump of a nuclear power plant is the core equipment in the cooling system of a nuclear power plant. It undertakes the important task of providing stable and efficient cooling circulating water for the reactor. The circulating pump is made of high-strength and corrosion-resistant materials and can operate for a long time and at high load to ensure that the reactor temperature is controlled within a safe range. The performance of the circulating pump of a nuclear power plant directly affects the safety and stable operation of the nuclear power plant and is an indispensable key equipment of the nuclear power plant.

[0003] At present, the oil baffle plate in the circulation pump usually cooperates with the gland. An axial through hole is opened in the center of the oil baffle plate. The pump shaft passes through the oil baffle plate through the through hole. The oil baffle plate is fixed to the pump shaft by bolts. A sealing ring is embedded in the peripheral side wall of the oil baffle plate at the through hole, thereby sealing the oil baffle plate and the pump shaft. When the pump shaft rotates, the pump shaft drives the oil baffle plate to rotate. The synchronous rotation of the pump shaft and the oil baffle plate ensures that the oil baffle plate can effectively play its sealing and protective role, thereby keeping the working fluid inside the circulation pump circulating within the specified range and avoiding leakage and the entry of external impurities.

[0004] After the circulation pump has been used for a long time, the dense mesh ring will age, which will reduce the sealing effect of the sealing ring. At this time, the sealing ring needs to be replaced. First, remove the gland, then remove the oil baffle plate from the pump shaft, buckle the sealing ring from the oil baffle plate, and then replace and install a new sealing ring to complete the replacement of the oil baffle plate sealing ring. The aged sealing ring is prone to hardening and losing its elasticity. At this time, the sealing ring is difficult to buckle out from the oil baffle plate, making it difficult to replace the sealing ring. Utility Model Content

[0005] In order to facilitate the replacement of the sealing ring of the oil baffle plate, the present application provides a sealing oil baffle plate structure.

[0006] The present application provides a sealing oil baffle plate structure adopts the following technical solution:

[0007] A sealing oil baffle plate structure comprises an oil baffle plate body and a first sealing ring, a through hole is opened in the oil baffle plate body, the first sealing ring is arranged in the side wall of the oil baffle plate body located at the through hole, the oil baffle plate body comprises a first plate body and a second plate body, the first plate body and the second plate body are coaxially detachably fixedly installed, a first mounting ring groove is opened on the side wall of the first plate body close to the second plate body and located on the outer peripheral side of the through hole, a second mounting ring groove is opened on the side wall of the second plate body close to the first plate body and located on the outer peripheral side of the through hole, and the first sealing ring is located in the first mounting ring groove and the second mounting ring groove.

[0008] By adopting the above technical solution, when the first sealing ring of the oil deflector needs to be replaced, the oil deflector is first removed from the pump shaft, and then the first plate body and the second plate body are separated. At this time, the first mounting ring groove and the second mounting ring groove are separated, and the first sealing ring can be quickly taken out and replaced with a new first sealing ring, thereby facilitating the replacement of the first sealing ring of the oil deflector.

[0009] Preferably, a guide column is provided on the side wall of the second disk body close to the first disk body along its own axial direction, and a guide groove is provided on the side wall of the first disk body close to the second disk body, and the guide column is slidably inserted in the guide groove.

[0010] By adopting the above technical solution, after the first sealing ring is replaced, the first plate body and the second plate body are assembled, and the guide column is inserted into the guide groove and guides the movement of the second plate body, thereby facilitating the second plate body and the first plate body to be assembled quickly and accurately.

[0011] Preferably, the side wall of the first disk body located in the first mounting ring groove away from the second disk body is inclined toward the direction away from the second disk body, and the side wall of the second disk body located in the second mounting ring groove away from the first disk body is inclined toward the direction away from the first disk body.

[0012] By adopting the above technical solution, the side walls of the first mounting ring groove and the second mounting ring groove that are away from each other are inclined in a direction away from each other, so that after the first disk body and the second disk body are assembled, the inclined side walls of the first mounting ring groove and the second mounting ring groove squeeze the first sealing ring, thereby improving the sealing effect between the first sealing ring and the pump shaft.

[0013] Preferably, a deformation annular cavity is formed inside the first sealing ring.

[0014] By adopting the above technical solution, when the first sealing ring is squeezed by the first disc body and the second disc body, the first sealing ring is deformed to a greater extent, so that the contact area between the first sealing ring and the pump shaft is larger, thereby further improving the sealing effect of the first sealing ring.

[0015] Preferably, the second disc body is provided with a fixing hole along its radial direction, and the second disc body is provided with a fixing piece through a thread in the fixing hole, and an end of the fixing piece abuts against the pump shaft.

[0016] By adopting the above technical solution, the second plate body can be fixed and released on the pump shaft by rotating the fixing piece, thereby facilitating the rapid disassembly and assembly of the oil deflector plate body.

[0017] Preferably, the second disk body is provided with a locking hole along its axial direction, and the second disk body is provided with a locking member in the locking hole, and the locking member is threadedly fixed in the first disk body.

[0018] By adopting the above technical solution, the second disc body and the first disc body can be fixed or released by rotating the locking member, thereby facilitating the replacement of the first sealing ring.

[0019] Preferably, an annular boss is provided on the outer side wall of the first disk body, and an annular groove is formed between the annular boss and the first disk body.

[0020] By adopting the above technical solution, when the pump shaft drives the oil baffle plate to rotate, the annular groove can effectively prevent the lubricating oil from overflowing.

[0021] Preferably, a third disk body is arranged between the second disk body and the first disk body, and the third disk body is slidably arranged on the guide column. A third mounting ring groove is provided on the side wall of the third disk body close to the first disk body, and the first sealing ring is located in the first mounting ring groove and the third mounting ring groove. A fourth mounting ring groove is provided on the side wall of the third disk body close to the second disk body, and a second sealing ring is provided in the second mounting ring groove and the fourth mounting ring groove.

[0022] By adopting the above technical solution, the first sealing ring and the second sealing ring perform sealing together, thereby achieving a better sealing effect between the oil deflector body and the pump shaft.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Using the first plate body and the second plate body, when the first sealing ring of the oil baffle plate needs to be replaced, the oil baffle plate is first removed from the pump shaft, and then the first plate body and the second plate body are separated. At this time, the first mounting ring groove is separated from the second mounting ring groove, and the first sealing ring can be quickly taken out and replaced with a new one, so that the first sealing ring of the oil baffle plate is easily replaced;

[0025] 2. With the help of the guide column and the guide groove, after the first sealing ring is replaced, the first plate body and the second plate body are assembled, and the guide column is inserted into the guide groove and guides the movement of the second plate body, so that the second plate body and the first plate body can be assembled quickly and accurately;

[0026] 3. Through the inclined side walls of the first mounting ring groove and the second mounting ring groove, when the first disc body and the second disc body are assembled, the inclined side walls of the first mounting ring groove and the second mounting ring groove squeeze the first sealing ring, and the deformation ring cavity makes the first sealing ring deform more, thereby making the sealing effect between the first sealing ring and the pump shaft better. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a cross-sectional view of the overall structure of the sealing oil baffle plate structure in Example 1 of the present application;

[0028] Figure 2This is a partial structural cross-sectional view of the sealing oil baffle plate structure in Example 1 of the present application;

[0029] Figure 3 This is a partial structural cross-sectional view of the sealing oil baffle plate structure in Example 2 of the present application.

[0030] Figure numerals: 1. oil baffle plate body; 11. first plate body; 12. second plate body; 2. first sealing ring; 3. through hole; 4. first mounting ring groove; 5. second mounting ring groove; 6. guide column; 7. guide groove; 8. deformation ring cavity; 9. fixing hole; 10. fixing piece; 13. locking hole; 14. locking piece; 15. annular boss; 16. annular groove; 17. third plate body; 18. third mounting ring groove; 19. fourth mounting ring groove; 20. threaded hole; 21. second sealing ring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0032] The embodiment of the present application discloses a sealing oil baffle plate structure.

[0033] Embodiment 1:

[0034] Reference Figure 1 and Figure 2 A sealing oil baffle plate structure includes an oil baffle plate body 1 and a first sealing ring 2. The oil baffle plate body 1 includes a first plate body 11 and a second plate body 12. The middle parts of the first plate body 11 and the second plate body 12 are both provided with through holes 3 along their own axial directions, and the first plate body 11 and the second plate body 12 are installed and sleeved on the pump shaft through the through holes 3.

[0035] A first mounting ring groove 4 communicating with the through hole 3 is formed on the side wall of the first disk body 11 close to the second disk body 12, and a second mounting ring groove 5 communicating with the through hole 3 is formed on the side wall of the second disk body 12 close to the first disk body 11. The first sealing ring 2 is located in the first mounting ring groove 4 and the second mounting ring groove 5.

[0036] The second disk body 12 is provided with a locking hole 13 along its own axial direction, and a plurality of locking holes 13 are provided at equal intervals along the circumference of the second disk body 12. The first disk body 11 is provided with a threaded hole 20 on the side wall close to the second disk body 12, and a plurality of threaded holes 20 are provided at equal intervals along the circumference of the first disk body 11. The second disk body 12 is provided with a locking member 14 in each locking hole 13, and in this application, the locking member 14 is a bolt. The end screw of the locking member 14 is fixedly installed in the threaded hole 20, thereby fixing the first disk body 11 and the second disk body 12, and the first mounting ring groove 4 and the second mounting ring groove 5 clamp and fix the first sealing ring 2 and make the first sealing ring 2 press against the outer surface of the pump shaft, thereby sealing the pump shaft and the oil retaining plate body 1.

[0037] The second disc 12 has a fixing hole 9 formed in its diameter direction. A plurality of fixing holes 9 are formed at equal intervals along the circumference of the second disc 12, and the plurality of fixing holes 9 and the plurality of locking holes 13 are staggered along the circumference of the second disc 12. The second disc 12 has a fixing member 10 threadedly installed in each fixing hole 9. In the present application, the fixing member 10 can be a bolt, and the bottom end of the fixing member 10 abuts against the outer surface of the pump shaft. The second disc 12 can be fixed to the pump shaft by rotating the fixing member 10, thereby fixing the first disc 11 and the first sealing ring 2 to the pump shaft.

[0038] When the first sealing ring 2 needs to be replaced, first rotate the locking piece 14 to contact the first plate body 11 and the second plate body 12 to clamp the first sealing ring 2, then rotate the fixing piece 10 to make the bottom end of the fixing piece 10 separate from the pump shaft surface, and after sliding to remove the oil baffle plate body 1, rotate to remove the locking piece 14, the first plate body 11 can be separated from the second plate body 12, thereby facilitating the removal of the aged first sealing ring 2 from the oil baffle plate body 1.

[0039] After replacing the new first sealing ring 2, first rotate and install the locking member 14 to connect the first plate body 11 and the second plate body 12 and preliminarily clamp the first sealing ring 2, then sleeve the oil baffle plate body 1 on the pump shaft, rotate the fixing member 10 to fix the second plate body 12, and finally rotate the locking member 14 to lock the first plate body 11 and the second plate body 12, so that the first sealing ring 2 fits tightly on the pump shaft. In this way, the first sealing ring 2 can be quickly taken out and replaced with a new first sealing ring 2, so that the first sealing ring 2 in the oil baffle plate body 1 can be easily replaced.

[0040] The side wall of the first mounting ring groove 4 away from the second mounting ring groove 5 is inclined toward the second mounting ring groove 5, and the side wall of the second mounting ring groove 5 away from the first mounting ring groove 4 is inclined toward the first mounting ring groove 4, and a deformation ring cavity 8 is formed in the first sealing ring 2.

[0041] When the first plate body 11 and the second plate body 12 are assembled, the inclined side walls of the first mounting ring groove 4 and the second mounting ring groove 5 squeeze the first sealing ring 2, so that the first sealing ring 2 is closely attached to the surface of the pump shaft in the direction close to the pump shaft. At the same time, when the first sealing ring 2 is squeezed, the deformation ring cavity 8 makes the first sealing ring 2 deform more, and the contact area between the first sealing ring 2 and the pump shaft is larger, thereby improving the sealing effect of the first sealing ring 2.

[0042] A guide post 6 is fixedly installed on the side wall of the second disk body 12 close to the first disk body 11 along the axis direction thereof, and a plurality of guide posts 6 are fixedly installed at equal intervals along the circumference of the second disk body 12. A guide groove 7 is opened on the side wall of the first disk body 11 close to the second disk body 12 along the axis direction thereof, and a plurality of guide grooves 7 are opened at equal intervals along the circumference of the first disk body 11. When the first disk body 11 and the second disk body 12 are assembled and installed, the guide post 6 is slidably inserted into the guide groove 7 and guides the movement of the second disk body 12, thereby facilitating the rapid and accurate assembly of the second disk body 12 and the first disk body 11.

[0043] An annular boss 15 is integrally formed on the outer wall of the first disk body 11, and an annular groove 16 is formed between the side of the annular boss 15 away from the second disk body 12 and the outer peripheral side of the first disk body 11. When the pump shaft drives the oil baffle plate to rotate, the annular groove 16 can effectively prevent the lubricating oil from overflowing.

[0044] The implementation principle of a sealing oil baffle plate structure of the embodiment of the present application is as follows: when the first sealing ring 2 needs to be replaced, the locking member 14 is first rotated to contact the clamping state of the first plate body 11 and the second plate body 12 on the first sealing ring 2, and then the fixing member 10 is rotated to make the bottom end of the fixing member 10 separate from the pump shaft surface, and after the oil baffle plate body 1 is slid and removed, the locking member 14 is rotated and removed, so that the first plate body 11 and the second plate body 12 can be separated, thereby facilitating the removal of the aged first sealing ring 2 from the oil baffle plate body 1. After replacing the new first sealing ring 2, the locking member 14 is first rotated and installed to connect the first plate body 11 and the second plate body 12 and preliminarily clamp the first sealing ring 2, and then the oil baffle plate body 1 is sleeved on the pump shaft, the fixing member 10 is rotated to fix the second plate body 12, and finally the locking member 14 is rotated to lock the first plate body 11 and the second plate body 12, so that the first sealing ring 2 fits tightly on the pump shaft. In this way, the first sealing ring 2 can be quickly taken out and replaced with a new first sealing ring 2, thereby facilitating the replacement of the first sealing ring 2 in the oil deflector body 1.

[0045] Embodiment 2:

[0046] Reference Figure 3 The difference between this embodiment and embodiment 1 is that a third plate 17 is installed between the first plate 11 and the second plate 12, and the through hole 3 is opened in the middle of the third plate 17. The third plate 17 is slidably installed on the guide rod, and the locking member 14 passes through the third plate 17.

[0047] A third mounting annular groove 18 communicating with the through hole 3 is provided on the side wall of the third disk body 17 close to the first disk body 11, and a fourth mounting annular groove 19 communicating with the through hole 3 is provided on the side wall of the third disk body 17 close to the second disk body 12. The first sealing ring 2 is installed between the first mounting annular groove 4 and the third mounting annular groove 18, and a second sealing ring 21 is installed between the fourth mounting annular groove 19 and the second mounting annular groove 5. The side wall of the third mounting annular groove 18 is inclined away from the first mounting annular groove 4, and the side wall of the fourth mounting annular groove 19 is inclined away from the second mounting annular groove 5, and the deformation annular cavity 8 is formed inside the second sealing ring 21.

[0048] After the oil deflector body 1 is installed on the pump shaft, the first sealing ring 2 and the second sealing ring 21 are both pressed against the pump shaft, thereby further improving the sealing effect between the oil deflector body 1 and the pump shaft.

[0049] The implementation principle of Example 2 of the present application is: when assembling the oil baffle plate body 1, the third plate body 17 is installed between the first plate body 11 and the second plate body 12, the first sealing ring 2 is clamped between the first plate body 11 and the third plate body 17, and the second sealing ring 21 is clamped between the second plate body 12 and the third plate body 17. After the oil baffle plate body 1 is installed on the pump shaft, the first sealing ring 2 and the second sealing ring 21 are both pressed against the pump shaft, thereby further improving the sealing effect between the oil baffle plate body 1 and the pump shaft.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealed oil baffle plate structure, comprising an oil baffle plate body (1) and a first sealing ring (2), wherein a through hole (3) is provided in the oil baffle plate body (1), and the first sealing ring (2) is arranged in a side wall of the oil baffle plate body (1) at the through hole (3), characterized in that: The oil deflector body (1) comprises a first disc body (11) and a second disc body (12); the first disc body (11) and the second disc body (12) are coaxially detachably fixedly mounted; a first mounting ring groove (4) is provided on the side wall of the first disc body (11) close to the second disc body (12) and located on the outer peripheral side of the through hole (3); a second mounting ring groove (5) is provided on the side wall of the second disc body (12) close to the first disc body (11) and located on the outer peripheral side of the through hole (3); and the first sealing ring (2) is located in the first mounting ring groove (4) and the second mounting ring groove (5).

2. A sealing oil baffle structure according to claim 1, characterized in that: A guide column (6) is arranged on the side wall of the second disk body (12) close to the first disk body (11) along its own axial direction, and a guide groove (7) is opened on the side wall of the first disk body (11) close to the second disk body (12), and the guide column (6) is slidably inserted in the guide groove (7).

3. The sealing oil baffle structure according to claim 1, characterized in that: The side wall of the first disk body (11) located in the first mounting ring groove (4) away from the second disk body (12) is inclined in a direction away from the second disk body (12), and the side wall of the second disk body (12) located in the second mounting ring groove (5) away from the first disk body (11) is inclined in a direction away from the first disk body (11).

4. A sealing oil baffle structure according to claim 3, characterized in that: A deformation annular cavity (8) is formed inside the first sealing ring (2).

5. The sealing oil baffle structure according to claim 1, characterized in that: The second disc body (12) is provided with a fixing hole (9) along its radial direction, and the second disc body (12) is provided with a fixing piece (10) in the inner thread of the fixing hole (9), and the end of the fixing piece (10) abuts against the pump shaft.

6. The sealing oil baffle structure according to claim 1, characterized in that: The second disk body (12) is provided with a locking hole (13) along its own axial direction. The second disk body (12) is provided with a locking member (14) in the locking hole (13). The locking member (14) is threadedly fixed in the first disk body (11).

7. The sealing oil baffle structure according to claim 1, characterized in that: An annular boss (15) is provided on the outer side wall of the first disk body (11), and an annular groove (16) is formed between the annular boss (15) and the first disk body (11).

8. The sealing oil baffle structure according to claim 2, characterized in that: A third disk body (17) is arranged between the second disk body (12) and the first disk body (11); the third disk body (17) is slidably arranged on the guide column (6); a third mounting ring groove (18) is provided on the side wall of the third disk body (17) close to the first disk body (11); the first sealing ring (2) is located in the first mounting ring groove (4) and the third mounting ring groove (18); a fourth mounting ring groove (19) is provided on the side wall of the third disk body (17) close to the second disk body (12); and a second sealing ring (21) is provided in the second mounting ring groove (5) and the fourth mounting ring groove (19).

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