CN87205750U - Liquid pressure increased sealing structure - Google Patents
Liquid pressure increased sealing structure Download PDFInfo
- Publication number
- CN87205750U CN87205750U CN 87205750 CN87205750U CN87205750U CN 87205750 U CN87205750 U CN 87205750U CN 87205750 CN87205750 CN 87205750 CN 87205750 U CN87205750 U CN 87205750U CN 87205750 U CN87205750 U CN 87205750U
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- sealing
- chamber
- medium
- liquid
- pressurizing cylinder
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Abstract
The utility model relates to a device which adopts liquid sealing structure and carry out pressurizing to liquid sealing medium, belonging to the sealing position of The major technique of the utility model is characterized in that the pressure of liquid sealing medium such as hydraulic oil or lubricating oil is pressurized equal to or above the working pressure of sealed medium such as mud serous liquid, which forms static pressure balance or positive pressure difference; in this way, two functions of sealing and lubricating can be achieved.
Description
The utility model is to belong to utilizing to-and-fro motion to produce the high-pressure plunger pump of difference in volume or the sealing position of reciprocating pump, adopts liquid sealing structure and the liquid seal medium is carried out the device of supercharging.
The seal style of all kinds slurry pump all adopts the sealed solid filler of rubber or asbestos on the present oil field, utilize seal space long between sealing medium and the moving parts (piston rod or plunger rod), make to form reasonably pressure gradient between working room's mesohigh liquid (or gas) and the atmosphere, prevent that sealed highly pressurised liquid (or gas) from producing macroscopic view and flowing into atmosphere and cause leakage.This just requires between stuffing box packing and the moving parts (piston rod or plunger rod) less matching gap is arranged, and its result has increased the working resistance of moving parts (piston rod or plunger rod), causes local pyrexia, causes energy loss.In order to reduce wearing and tearing, also want the additional lubrication device.
The purpose of this utility model provides a kind of liquid that utilizes, and------hydraulic oil or lubricant oil (hereinafter to be referred as sealing medium) are as the structure of sealing medium.It utilizes existing hydraulic oil high pressure seal structure, adopt the both-end sealing means, the seal ring of one end is with sealing medium and sealed medium, and------highly pressurised liquid (or gas) is kept apart, the seal ring of the other end is opened sealing medium and isolated from atmosphere, so just the sealing that the sealing that contains solid particle mud liquid is converted to hydraulic oil or lubricant oil.
Another purpose of the present utility model is that sealing is combined with lubricated, and this is because sealing medium can form one deck oil film on moving parts (piston rod or plunger rod) surface, plays lubrication.
The utility model is achieved in that the seal ring of both-end closed chamber is to be assembled into by the poly-rare combined sealing ring of four Buddhist second of being with filler, shown in figure two: the sealing chamber will have the working medium of P3 pressure and atmosphere P0 to keep apart, and form a sealing configuration (being called for short closed chamber or both-end closed chamber) with lubricating function.The sealing chamber is communicated with (shown in figure one) with the booster cavity of a pressurizing cylinder, and under the effect of pressurizing cylinder, the liquid seal medium is pressurized to P2 pressure.Thereby sealing medium P2 in the assurance closed chamber and working medium P3 pressure balance or less pressure reduction is arranged.
The utility model is because only utilize the piston of pressurizing cylinder or plunger that sealing medium is carried out supercharging, and the working medium of pressurizing cylinder is not had specific (special) requirements, so two kinds of supercharging modes are arranged:
A.------hydraulic oil is as the working medium of pressurizing cylinder to utilize the working medium of slurry pump drive cylinder;
B. the working room of pressurizing cylinder (P1 chamber or P1 ' chamber) directly is communicated with mud liquid chamber (P3 chamber or P3 ' chamber), utilizes the working pressure of mud liquid directly sealing medium to be carried out supercharging.
Closed chamber should assemble a cover recharging oil device, and the sealing medium that loses is replenished.
Closed chamber shown in the figure two is to be made of two groups of seal rings, and combined sealing ring is combined by common O type rubber ring and the poly-rare ring of four Buddhist second.
Figure one is depicted as: when high-pressure and hydraulic oil enters the P1 chamber that mud drive cylinder P1 chamber also enters pressurizing cylinder simultaneously, promote the sealing medium supercharging of charged piston (or plunger) to the P2 chamber, the high pressure sealing medium that enters closed chamber is except the surface at work plunger or piston rod forms the lubricant film, mainly is to be used for the high-pressure slurry liquid in balance P3 chamber to the active force (shown in figure two) of seal ring.
Above-mentioned sealing configuration makes the liquid seal medium to sealed working medium, and------mud liquid produces positive differential pressure, so can realize to the sealing of mud liquid and lubricating to piston or plunger rod, improve the working life of quick-wear part, also have same sealing and lubricating function if make sealing medium produce less Negative Pressure Difference to mud liquid.
Claims (2)
1, the liquid supercharging type sealing configuration of being made up of both-end closed chamber and pressurizing cylinder is characterized in that:
A. the closed chamber that described sealing configuration is made up of the two seals ring;
B. the sealing chamber is communicated with pipeline with the booster cavity of pressurizing cylinder.
2, by the described pressurizing cylinder of claim 1, it is characterized in that:
A. isolated by piston between the booster cavity of pressurizing cylinder and the active chamber;
B. isolated by plunger between the booster cavity of pressurizing cylinder and the active chamber;
C. the active chamber of pressurizing cylinder is communicated with the drive cylinder of slurry pump;
D. the active chamber of pressurizing cylinder is communicated with the mud liquid chamber of slurry pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87205750 CN87205750U (en) | 1987-04-02 | 1987-04-02 | Liquid pressure increased sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87205750 CN87205750U (en) | 1987-04-02 | 1987-04-02 | Liquid pressure increased sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87205750U true CN87205750U (en) | 1988-01-27 |
Family
ID=4821445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87205750 Withdrawn CN87205750U (en) | 1987-04-02 | 1987-04-02 | Liquid pressure increased sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87205750U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089875C (en) * | 1996-11-21 | 2002-08-28 | 于进才 | Liquid-working-medium self-filling sealing method |
| CN102383606A (en) * | 2011-11-24 | 2012-03-21 | 三一重工股份有限公司 | Lubrication system of concrete machine and concrete machine |
| CN103244404A (en) * | 2013-05-15 | 2013-08-14 | 郑德忠 | Hydraulic seal slush pump |
| CN111156420A (en) * | 2019-12-30 | 2020-05-15 | 清华大学 | Hydrogen leakage prevention device |
| CN113007355A (en) * | 2020-10-23 | 2021-06-22 | 广东海洋大学寸金学院 | Reciprocating compressor packing sealing mechanism |
-
1987
- 1987-04-02 CN CN 87205750 patent/CN87205750U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1089875C (en) * | 1996-11-21 | 2002-08-28 | 于进才 | Liquid-working-medium self-filling sealing method |
| CN102383606A (en) * | 2011-11-24 | 2012-03-21 | 三一重工股份有限公司 | Lubrication system of concrete machine and concrete machine |
| CN102383606B (en) * | 2011-11-24 | 2013-10-23 | 三一汽车制造有限公司 | Lubrication system of concrete machine and concrete machine |
| CN103244404A (en) * | 2013-05-15 | 2013-08-14 | 郑德忠 | Hydraulic seal slush pump |
| CN103244404B (en) * | 2013-05-15 | 2016-12-28 | 北京万普隆能源技术有限公司 | Hydraulic seal slush pump |
| CN111156420A (en) * | 2019-12-30 | 2020-05-15 | 清华大学 | Hydrogen leakage prevention device |
| CN113007355A (en) * | 2020-10-23 | 2021-06-22 | 广东海洋大学寸金学院 | Reciprocating compressor packing sealing mechanism |
| CN113007355B (en) * | 2020-10-23 | 2022-05-24 | 湛江科技学院 | Reciprocating compressor packing sealing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |