CN216201089U - Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod - Google Patents
Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod Download PDFInfo
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- CN216201089U CN216201089U CN202122306232.8U CN202122306232U CN216201089U CN 216201089 U CN216201089 U CN 216201089U CN 202122306232 U CN202122306232 U CN 202122306232U CN 216201089 U CN216201089 U CN 216201089U
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- auxiliary connecting
- gland
- bolt
- oil
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Abstract
The utility model discloses an oil leakage prevention sealing cover which comprises a pressing cover, a sealing ring, a bolt, a nut and a sealing ring protruding from the bottom of the pressing cover. Meanwhile, the bottom surface of the sealing ring can be continuously attached to the auxiliary connecting cylinder in the extruding process, and hydraulic oil is prevented from leaking out of the sealing ring. The oil leakage fault can be processed in time in the running process of the unit, and the load loss caused by the long time of shutdown processing is saved.
Description
Technical Field
The utility model relates to the technical field of hydroelectric power generation, in particular to an oil seepage prevention sealing cover for an auxiliary connecting cylinder and an auxiliary connecting valve rod.
Background
The auxiliary connecting cylinder and the auxiliary connecting valve rod are important components of hydroelectric power generation and are used for providing energy for the servomotor.
When the hydraulic oil in the auxiliary connecting cylinder pushes the auxiliary connecting valve rod to perform telescopic motion, the sealing ring between the auxiliary connecting cylinder and the auxiliary connecting valve rod generates abrasion due to the fact that the auxiliary connecting valve rod performs telescopic motion for a long time, a gap is formed between the auxiliary connecting valve rod and the auxiliary connecting cylinder, the hydraulic oil leaks out through the gap due to sealing failure of the auxiliary connecting cylinder, if the sealing ring is replaced by shutdown, a pressure oil source and relevant equipment need to be cut off, the processing defect tends to be complicated, the processing defect needs 6-8 hours, and power generation and supply of a unit can be lost.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the anti-seepage oil sealing cover can be directly processed when oil leakage occurs, does not need to be shut down, and saves load loss caused by long time of shutdown processing.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the oil leakage prevention sealing cover for the auxiliary connecting cylinder and the auxiliary connecting valve rod comprises a pressing cover, a sealing ring, a bolt, a nut and a sealing ring protruding from the bottom of the pressing cover, wherein the pressing cover is provided with a through mounting hole, the sealing ring is arranged around the edge of the mounting hole, the inner diameter of the sealing ring is larger than the aperture of the mounting hole, a step is formed between the inner wall of the mounting hole and the inner wall of the sealing ring, the sealing ring is arranged in the sealing ring and clings to the surface of the step, the bottom surface of the sealing ring is lower than the bottom surface of the sealing ring, the pressing cover is sleeved on the auxiliary connecting valve rod, and the sealing ring is arranged around the auxiliary connecting valve rod; the gland is provided with a through hole, the top surface of the auxiliary connecting cylinder is provided with a threaded hole matched with the bolt, the bolt passes through the through hole and is inserted into the threaded hole, and the sealing ring props against the top surface of the auxiliary connecting cylinder; the nut is sleeved on the bolt and abutted against one surface of the gland away from the sealing ring, and the nut is in threaded connection with the bolt.
As a further improvement of the above technical solution:
the threaded hole is a blind hole, and the end face of the bolt insertion end props against the bottom wall of the threaded hole. Effectively prevent vibration, prevent that the bolt pine from taking off.
Further, the through hole is disposed between the sealing ring and the edge of the gland. Not only can the gland be stably fixed on the top surface of the auxiliary connecting cylinder, but also the sealing effect of the sealing ring can not be influenced, and the oil seepage prevention effect of the sealing cover is ensured.
Further, the number of the bolts and the nuts is four, and the four bolts are uniformly arranged around the sealing ring. Because the end face of the bolt insertion end props against the bottom wall of the threaded hole, the nut can only rotate to push the gland downwards and extrude the sealing ring to deform, and therefore sealing is achieved. When the nut rotates on the bolt, the sealing ring can be uniformly stressed, so that the compression effect of the sealing ring on the top surface of the auxiliary connecting cylinder is improved, and hydraulic oil is prevented from leaking from the auxiliary connecting cylinder.
Furthermore, the sealing ring is an O-shaped ring, the cross section of the sealing ring is circular, the outer diameter of the sealing ring is consistent with that of the sealing ring, and the inner diameter of the sealing ring is consistent with that of the mounting hole. The O-shaped ring is matched with the auxiliary connecting valve rod in shape, and the cross section of the O-shaped ring is circular, so that the O-shaped ring is convenient to extrude.
The utility model has the beneficial effects that:
when the condition of oil leakage appeared in use, rotatable nut extrudes the gland, because the sealing washer bottom surface is less than the sealing ring bottom surface, has the difference in height between sealing washer and the sealing ring, and the sealing washer can only constantly warp toward the mounting hole because of the effect of blockking of the squeezing action that receives the gland and sealing ring for the internal diameter reduces, thereby constantly pastes the tight valve rod of connecing of assistance, prevents that hydraulic oil from leaking the outside through the mounting hole. Meanwhile, the bottom surface of the sealing ring can be continuously attached to the auxiliary connecting cylinder in the extruding process, and hydraulic oil is prevented from leaking out of the sealing ring. The oil leakage fault can be processed in time in the running process of the unit, and the load loss caused by the long time of shutdown processing is saved.
Drawings
Fig. 1 is a schematic view showing the structure of an oil-impermeable sealing cap according to the present invention.
Fig. 2 is a schematic structural view of the gland of the present invention.
Figure 3 is a cross-sectional view of a gland of the present invention.
The reference numbers in the figures are: 1. a gland; 11. a through hole; 12. mounting holes; 2. a seal ring; 3. a bolt; 4. a nut; 5. the valve rod is connected in an auxiliary way; 6. a cylinder is connected in an auxiliary way; 7. and (5) sealing rings.
Detailed Description
The present invention will be described with reference to the accompanying drawings, wherein the embodiments are described for illustrative and explanatory purposes only and are not intended to limit the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
As shown in FIGS. 1-3, the prevention of seepage oil seal lid of the auxiliary connection cylinder and the auxiliary connection valve rod of the embodiment comprises a gland 1, a seal ring 7, bolts 3, nuts 4 and seal rings 2 protruding from the bottom of the gland 1, the bolts 3 and the nuts 4 are four, and the four bolts 3 are uniformly arranged around the seal rings 2. Gland 1 is equipped with mounting hole 12 that runs through, and sealing ring 2 encircles the setting of mounting hole 12 edge and the ring internal diameter is greater than mounting hole 12 aperture, and mounting hole 12 inner wall forms the step with sealing ring 2 inner wall, and sealing washer 7 is installed in sealing ring 2 and hugs closely the step face, and sealing washer 7 bottom surface is less than sealing ring 2 bottom surface, and sealing washer 7 is an O type circle and transversal personally submits circularly, and its external diameter is unanimous with sealing ring 2, and the internal diameter is unanimous with the size of mounting hole 12. The gland 1 is sleeved on the auxiliary connecting valve rod 5, and the sealing ring 7 is arranged around the auxiliary connecting valve rod 5.
Wherein, gland 1 is equipped with through-hole 11, and through-hole 11 sets up between sealing ring 2 and gland 1 edge. The top surface of the auxiliary connecting cylinder 6 is provided with a threaded hole matched with the bolt 3, the bolt 3 penetrates through the through hole 11 and is inserted into the threaded hole, and the sealing ring 7 abuts against the top surface of the auxiliary connecting cylinder 6. The threaded hole is the blind hole, and bolt 3 inserts the end face and withstands the threaded hole diapire. The nut 4 is sleeved on the bolt 3 and is abutted against the surface of the gland 1, which is far away from the sealing ring 2, and the nut 4 is in threaded connection with the bolt 3.
When the oil leakage prevention sealing cover is used, the gland 1 is sleeved on the auxiliary connecting valve rod 5, the auxiliary connecting valve rod 5 is inserted into the auxiliary connecting cylinder 6 through the mounting hole 12 in the gland 1, and finally the nut 4 is screwed on the bolt 3, the end of the bolt 3 is inserted into the through hole 11 and screwed into the threaded hole of the auxiliary connecting cylinder 6, so that the auxiliary connecting valve rod 5 and the auxiliary connecting cylinder 6 are mounted together. In the use, if the condition of oil leakage appears, can rotate nut 4, extrusion gland 1, sealing washer 7 receive the extrusion back, constantly warp toward mounting hole 12 in, make sealing washer 7's internal diameter reduce to constantly paste closely and connect valve rod 5, prevent that hydraulic oil from leaking to the outside through mounting hole 12. Meanwhile, the bottom surface of the sealing ring 7 can be continuously attached to the auxiliary connecting cylinder 6 in the extrusion process, and hydraulic oil is prevented from leaking out of the sealing ring 7.
Claims (5)
1. The auxiliary connection cylinder and the auxiliary connection valve rod prevent oil leakage and seal cover, which is characterized in that: the sealing device comprises a gland (1), a sealing ring (7), a bolt (3), a nut (4) and a sealing ring (2) protruding from the bottom of the gland (1), wherein the gland (1) is provided with a through mounting hole (12), the sealing ring (2) is arranged around the edge of the mounting hole (12), the inner diameter of the sealing ring is larger than the aperture of the mounting hole (12), the inner wall of the mounting hole (12) and the inner wall of the sealing ring (2) form a step, the sealing ring (7) is arranged in the sealing ring (2) and tightly attached to the step surface, the bottom surface of the sealing ring (7) is lower than that of the sealing ring (2), the gland (1) is sleeved on an auxiliary connecting valve rod (5), and the sealing ring (7) is arranged around the auxiliary connecting valve rod (5); the gland (1) is provided with a through hole (11), the top surface of the auxiliary connecting cylinder (6) is provided with a threaded hole matched with the bolt (3), the bolt (3) penetrates through the through hole (11) and is inserted into the threaded hole, and the sealing ring (7) props against the top surface of the auxiliary connecting cylinder (6); the nut (4) is sleeved on the bolt (3) and is abutted against the surface, far away from the sealing ring (2), of the gland (1), and the nut (4) is in threaded connection with the bolt (3).
2. The oil-tight closure of claim 1, further comprising: the threaded hole is a blind hole, and the end face of the insertion end of the bolt (3) props against the bottom wall of the threaded hole.
3. The oil-tight closure of claim 2, further comprising: the through hole (11) is arranged between the sealing ring (2) and the edge of the gland (1).
4. The oil-tight gland of claim 3, further comprising: the number of the bolts (3) and the number of the nuts (4) are four, and the four bolts (3) are uniformly arranged around the sealing ring (2).
5. The oil-tight gland of claim 4, further comprising: the sealing ring (7) is an O-shaped ring, the cross section of the sealing ring is circular, the outer diameter of the sealing ring is consistent with that of the sealing ring (2), and the inner diameter of the sealing ring is consistent with that of the mounting hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306232.8U CN216201089U (en) | 2021-09-23 | 2021-09-23 | Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306232.8U CN216201089U (en) | 2021-09-23 | 2021-09-23 | Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216201089U true CN216201089U (en) | 2022-04-05 |
Family
ID=80920688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122306232.8U Active CN216201089U (en) | 2021-09-23 | 2021-09-23 | Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216201089U (en) |
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2021
- 2021-09-23 CN CN202122306232.8U patent/CN216201089U/en active Active
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