CN215633942U - Nuclear power station high pressure injection pump bearing lubricating oil sealing ring - Google Patents
Nuclear power station high pressure injection pump bearing lubricating oil sealing ring Download PDFInfo
- Publication number
- CN215633942U CN215633942U CN202121558945.7U CN202121558945U CN215633942U CN 215633942 U CN215633942 U CN 215633942U CN 202121558945 U CN202121558945 U CN 202121558945U CN 215633942 U CN215633942 U CN 215633942U
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- China
- Prior art keywords
- pump
- pump shaft
- sealing ring
- pressure injection
- nuclear power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 45
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 19
- 239000000314 lubricant Substances 0.000 claims 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a bearing lubricating oil sealing ring of a high-pressure injection pump of a nuclear power station, which comprises a sealing box, wherein the sealing box is divided into a pump cavity and a pump shaft cavity, a pump is arranged in the pump cavity, a pump shaft penetrates through the pump shaft cavity, bearings are respectively sleeved at the joints of the pump shaft and the pump shaft cavity, sealing rings are respectively sleeved on the bearings, a plurality of sealing teeth are arranged on the inner sides of the sealing rings, throttling grooves are formed between adjacent sealing teeth, the adjacent throttling grooves are mutually communicated, one side of each sealing ring is a sealing surface, the other side of each sealing ring is a backflow surface, the sealing surface is positioned on the outer side of the pump shaft cavity, the backflow surface is positioned on the inner side of the pump shaft cavity, and a plurality of backflow holes are formed in the backflow surface. The sealing ring can make the entered lubricating oil return to the pump shaft cavity through the backflow hole and the throttling groove and flow in through the backflow hole, thereby solving the problem that the driving end of the high-pressure injection pump is easy to leak oil and oil.
Description
Technical Field
The utility model relates to the technical field of nuclear power station pump bearings, in particular to a lubricating oil sealing ring for a nuclear power station high-pressure injection pump bearing.
Background
At present, a pump shaft at the driving end of a high-pressure injection pump is often sealed by a seal box, a bearing is arranged at the joint of the pump shaft and the seal box, and lubricating oil is smeared on the bearing to enable the pump shaft to operate more stably. However, when the high-pressure injection pump works, the pump shaft at the driving end rotates at a high speed to drive the bearing to rotate at a high speed, and the lubricating oil is splashed by the bearing roller, so that the lubricating oil is easy to leak to the outside along the gap between the bearing and the seal box, and the oil leakage phenomenon is generated.
Because the oil leakage phenomenon often produces, need personnel often to get into the nuclear power plant who has the radiation environment and clear up the operation, not only cause the human cost extravagant, threaten personnel's health safety. Meanwhile, the running stability of the equipment is easily affected by oil leakage and oil leakage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a bearing lubricating oil sealing ring of a high-pressure injection pump of a nuclear power station, which solves the problem that the driving end of the existing high-pressure injection pump is easy to leak oil and oil.
The technical scheme of the utility model is realized as follows:
the utility model provides a nuclear power station high pressure injection pump bearing lubricating oil sealing ring, including the seal box, the seal box divide into pump chamber and pump shaft chamber, the pump is installed to the pump chamber, wear to be equipped with the pump shaft in the pump shaft chamber, the pump shaft overlaps respectively with the junction in pump shaft chamber is equipped with the bearing, the cover is equipped with the sealing ring on the bearing respectively, the sealing ring inboard is equipped with a plurality of sealed teeth, constitute the throttle groove between the adjacent sealed tooth, communicate each other between the adjacent throttle groove, the sealing ring one side is sealed face, the another side is the refluence face, sealed face is located the outside in pump shaft chamber, the refluence face is located pump shaft chamber inboard, be equipped with a plurality of backward flow holes on the refluence face.
The further technical proposal is that a plurality of communicating holes are arranged between adjacent throttling grooves.
The further technical scheme is that the number of the sealing teeth is six.
The further technical scheme is that the number of the backflow holes is three.
The further technical scheme is that an oil filling port is arranged on the pump shaft cavity.
The utility model has the beneficial effects that:
through the sealing ring of unique design to set up a plurality of throttle grooves and backward flow hole, can make the lubricating oil that gets into get back to the pump shaft intracavity through backward flow hole and throttle groove, flow in through the backward flow hole again, improve the easy oil leakage oil leak's of drive end of high pressure injection pump phenomenon, the phenomenon that reduces the oil leakage oil leak takes place.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
fig. 3 is a schematic structural view of the seal ring of the present invention.
In the figure, 1 is a seal box, 2 is a pump cavity, 3 is a pump shaft cavity, 4 is a bearing, 5 is a pump shaft, 6 is an oil injection port, 7 is a pump, 8 is a seal ring, 9 is a communication hole, 10 is a seal tooth, 11 is a throttling groove, 12 is a backflow hole, and 13 is a backflow surface.
Detailed Description
In order to better understand the technical content of the utility model, specific embodiments are provided below, and the utility model is further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, a bearing lubricating oil sealing ring 8 for a high-pressure injection pump of a nuclear power station comprises a sealing box 1, wherein the sealing box 1 is divided into a pump cavity 2 and a pump shaft cavity 3, a pump 7 is installed in the pump cavity 2, a pump shaft 5 penetrates through the pump shaft cavity 3, bearings 4 are respectively sleeved at the joints of the pump shaft 5 and the pump shaft cavity 3, the bearings 4 are respectively sleeved with the sealing rings 8, six sealing teeth 10 are arranged on the inner sides of the sealing rings 8, throttling grooves 11 are formed between adjacent sealing teeth 10, and a plurality of sealing teeth 10 are designed to enable a plurality of throttling grooves 11 to be formed; the adjacent throttling grooves 11 are communicated with each other, so that lubricating oil can flow between the throttling grooves 11; one surface of the sealing ring 8 is a sealing surface, the other surface is a backflow surface 13, and the sealing surface is positioned on the outer side of the pump shaft cavity 3, so that the sealing surface of the sealing ring 8 is not easy to leak oil; the backflow surface 13 is located on the inner side of the pump shaft cavity 3, three backflow holes 12 are formed in the backflow surface 13, the backflow holes 12 are evenly formed, lubricating oil can return to the backflow holes 12 through the throttling grooves 11, then flows out of the pump shaft cavity 3 through the backflow holes 12, and finally flows back into the sealing ring 8 through the pump shaft cavity 3, so that the phenomenon that oil seeps and leaks easily at the driving end of the high-pressure injection pump 77 is improved, and the phenomenon that the oil seeps and leaks is reduced.
Specifically, three communication holes 9 are provided between adjacent throttle grooves 11 to allow the lubricating oil in the throttle grooves 11 to flow through each other.
Specifically, the pump shaft cavity 3 is provided with an oil injection port 6, so that lubricating oil can be conveniently injected into the pump shaft cavity 3 to lubricate the bearing 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a nuclear power station high pressure injection pump bearing lubricating oil sealing ring, including the seal box, the seal box divide into pump chamber and pump shaft chamber, the pump is installed to the pump chamber, wear to be equipped with the pump shaft in the pump shaft chamber, the pump shaft overlaps respectively with the junction in pump shaft chamber is equipped with the bearing, a serial communication port, the cover is equipped with the sealing ring on the bearing respectively, the sealing ring inboard is equipped with a plurality of sealed teeth, constitute the throttle groove between the adjacent sealed tooth, communicate each other between the adjacent throttle groove, the sealing ring one side is sealed face, the another side is the refluence face, sealed face is located the outside in pump shaft chamber, the refluence face is located pump shaft intracavity side, be equipped with a plurality of backward flow holes on the refluence face.
2. The bearing lubricant sealing ring of the high-pressure injection pump of the nuclear power plant as claimed in claim 1, wherein a plurality of communication holes are formed between adjacent throttling grooves.
3. The bearing lubricant sealing ring of the high-pressure injection pump of the nuclear power plant as claimed in claim 1, wherein the number of the sealing teeth is six.
4. The bearing lubricant sealing ring of the high-pressure injection pump of the nuclear power plant as claimed in claim 1, wherein the number of the return holes is three.
5. The bearing lubricant sealing ring of the high-pressure injection pump of the nuclear power station as claimed in claim 1, wherein an oil filling port is formed in the pump shaft cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121558945.7U CN215633942U (en) | 2021-07-09 | 2021-07-09 | Nuclear power station high pressure injection pump bearing lubricating oil sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121558945.7U CN215633942U (en) | 2021-07-09 | 2021-07-09 | Nuclear power station high pressure injection pump bearing lubricating oil sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215633942U true CN215633942U (en) | 2022-01-25 |
Family
ID=79889275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121558945.7U Active CN215633942U (en) | 2021-07-09 | 2021-07-09 | Nuclear power station high pressure injection pump bearing lubricating oil sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215633942U (en) |
-
2021
- 2021-07-09 CN CN202121558945.7U patent/CN215633942U/en active Active
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