CN202001289U - Plunger with pressure equalizing groove used for mini plunger pump - Google Patents
Plunger with pressure equalizing groove used for mini plunger pump Download PDFInfo
- Publication number
- CN202001289U CN202001289U CN2011200383320U CN201120038332U CN202001289U CN 202001289 U CN202001289 U CN 202001289U CN 2011200383320 U CN2011200383320 U CN 2011200383320U CN 201120038332 U CN201120038332 U CN 201120038332U CN 202001289 U CN202001289 U CN 202001289U
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- plunger
- mini
- pump
- improve
- plunger pump
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Abstract
The utility model relates to a plunger used for a mini plunger pump in a well logging instrument. A column body of the plunger is provided with a ring pressure equalizing groove and fully utilizes a working medium to form lubricant, so that a mini oil ring is formed between the plunger and a plunger cylinder so as to reduce the sliding friction of a flat surface, and a sealing oil film is formed to improve the sealing property at the same time. The plunger with the pressure equalizing groove used for the micro-plunger pump adopts a structure of the mini oil storage ring and takes the hydraulic oil working medium as the lubricant, so as to reduce the friction and the surface abrasion of parts, improve the rotating speed, the rotary flexibility and the sealing property, prolong the service life of a product, improve the properties such as the speed, the flow, the pressure and the service life of the mini plunger pump.
Description
Technical field
The utility model belongs to the Logging Technology field, relates to the used plunger of Small Plunger Pump that uses in a kind of logger, the plunger in particularly a kind of Small Plunger Pump that is operated under the high temperature and high pressure environment.
Background technique
Small Plunger Pump is the special dedicated hydraulic pump that is mainly used in oil well logging instrument, and also can be widely used in Aeronautics and Astronautics and boats and ships etc. has the harsh field that requires to environmental suitability and volume performance etc.The type pump wants the cube small flow big, and can bear the high temperature and high pressure of oil well.Plunger is one of critical component in the Small Plunger Pump, is used in the plunger case to-and-fro motion, and compression hydraulic oil forms pressure.Its performance directly influences performances such as the flow, pressure, life-span of pump.
The theory structure schematic representation of Small Plunger Pump mainly is made up of plunger case, plunger, piston shoes, swash plate etc. as shown in Figure 1.When the swash plate of this pump rotated, piston shoes slided on the swash plate face of rotation, and with swash plate face dipping and heaving, to rotatablely move converts straight reciprocating motion to, and plunger with matching also moves up and down thereupon, thus the hydraulic oil in the compression plunger cylinder, hydraulic oil is pumped, form high pressure in the outlet port.
In general this structure, plunger is a cylindrical body, contact firmly with plunger case, rely on accurate design and machining accuracy to guarantee its sealing, but sealability and frictional force are conflicting, cooperating closely, its relative contact pressure increases, frictional force increases, pump speed descends, and in the extremely limited volume and space of micropump, the contradiction of how optimizing between its sealing and frictional force is to improve the key point of micropump performance.
Summary of the invention
The purpose of this utility model is: for when guaranteeing Small Plunger Pump piston cylinder sealing, reduce the frictional force of plunger and cylinder body, increase kinematic dexterity and flatness, and reduce surface abrasion, provide a kind of structure optimization, reliable sealing to have the piston structure of lubricating function.
The technological scheme that the utility model adopts for achieving the above object is: the residing working medium hydraulic oil of plunger and cylinder body situation when working according to Small Plunger Pump, and plunger surface can utilize the space situation, determine to adopt and a plurality of annular balancing slits are set at plunger surface, store a small amount of hydraulic oil as lubricant medium, thereby make and have a plurality of little oil rings between the plane between plunger and cylinder body, not only can reduce friction greatly, also can form microstructure sealing oil film simultaneously, increase sealing, its structure as shown in Figure 2.
The beneficial effects of the utility model are: directly contact slide type firmly with metal flat and compare, the utility model adopts the structural type of little shape piezometer ring, with the working medium is oiling agent, can when reducing force of sliding friction, improve sealing, reduce the part surface wearing and tearing, improve the running speed of pump and rotate flexibility, improve the product overall performance, prolong life of product.This structure processing technology is simple, and effect is remarkable, has good practical value.
Description of drawings
Fig. 1 is original Small Plunger Pump theory structure schematic representation.
Fig. 2 is the structural representation of the utility model annular balancing slit plunger.
Each label title is respectively among the figure: 1-plunger case, 2-sphere headpin plug, 3-conical surface groove piston shoes, 4-swash plate.
Embodiment
Below with reference to accompanying drawing the utility model content is described further, but actual fabrication structure of the present utility model is not limited in illustrated embodiment.
Referring to accompanying drawing 2, annular balancing slit plunger described in the utility model adopts the alloy structure steel, and via nitride is handled; Piston body is the cylindrical body that coincide with diameter of cylinder, and the lower end is the spheric structure that cooperates with piston shoes.Evenly distributing on the plunger cylinder body, to scribe a plurality of (being provided with 2-5 according to different pump types and plunger cylinder body length) width be the shallow slot of plungers length 1/10, plunger surface is through precise finish and cure process, with the oil hydraulic cylinder tight connecting, slip is flexible, good seal gets final product.
Adopt this annular balancing slit plunger, can make full use of working medium and form oiling agent, reduce the frictional force that contact is slided between the metal greatly, improve sealing simultaneously, reduce the part surface wearing and tearing, improve the running speed of pump and rotate flexibility, improve overall performances such as product flow, pressure, life-span.
Claims (1)
1. a Small Plunger Pump is characterized in that: a plurality of miniature equal pressure oil grooves are set, the lubricated oil storage ring of formation, and sealing film on the cylinder of cylindrical plunger with band balancing slit plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200383320U CN202001289U (en) | 2011-02-14 | 2011-02-14 | Plunger with pressure equalizing groove used for mini plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200383320U CN202001289U (en) | 2011-02-14 | 2011-02-14 | Plunger with pressure equalizing groove used for mini plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001289U true CN202001289U (en) | 2011-10-05 |
Family
ID=44704032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200383320U Expired - Fee Related CN202001289U (en) | 2011-02-14 | 2011-02-14 | Plunger with pressure equalizing groove used for mini plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202001289U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332875A (en) * | 2015-11-17 | 2016-02-17 | 四川嘉泉科技有限公司 | Multi-functional water and oil hybrid electric pump |
| CN112112793A (en) * | 2020-09-15 | 2020-12-22 | 秦皇岛卓飞科技有限公司 | Large-flow ultrahigh-pressure hydraulic pump |
| CN113250872A (en) * | 2021-04-25 | 2021-08-13 | 北京理工大学 | Automatic centering plunger structure |
-
2011
- 2011-02-14 CN CN2011200383320U patent/CN202001289U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332875A (en) * | 2015-11-17 | 2016-02-17 | 四川嘉泉科技有限公司 | Multi-functional water and oil hybrid electric pump |
| CN105332875B (en) * | 2015-11-17 | 2017-12-19 | 四川嘉泉科技有限公司 | A kind of multifunctional water oil dual-purpose electric pump |
| CN112112793A (en) * | 2020-09-15 | 2020-12-22 | 秦皇岛卓飞科技有限公司 | Large-flow ultrahigh-pressure hydraulic pump |
| CN113250872A (en) * | 2021-04-25 | 2021-08-13 | 北京理工大学 | Automatic centering plunger structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: XI'AN DIANTHUS ENERGY TECHNOLOGY CO., LTD. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: XI'AN DIANTHUS ENERGY TECHNOLOGY CO., LTD. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20160214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |