CN205117706U - Be applied to magnetic current body sealing device of oil recovery pump - Google Patents
Be applied to magnetic current body sealing device of oil recovery pump Download PDFInfo
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- CN205117706U CN205117706U CN201520813468.2U CN201520813468U CN205117706U CN 205117706 U CN205117706 U CN 205117706U CN 201520813468 U CN201520813468 U CN 201520813468U CN 205117706 U CN205117706 U CN 205117706U
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Abstract
The utility model discloses a be applied to magnetic current body sealing device of oil recovery pump, including magnet, magnetic pole and the magnetic current body, its characterized in that: being equipped with the magnetic pole at the pump barrel of oil recovery pump and the toroidal cavity endotheca between the plunger, being equipped with magnet in the outside cladding of magnetic pole, magnet is the annular, is equipped with annular recess on the inside and outside lateral wall of magnet, and it has the magnetic current body to fill in the recess, is transition fit between magnet and the pump barrel and between magnet and the plunger. The utility model discloses simple structure, sealed effectual, realized respectively and the pump barrel between and the plunger between the both sides magnetic seal, guaranteed sealing performance better, can ensure " zero " leakage in the time limit at product life, because of the magnetic current body is a liquid, and have friction and wear between the plunger hardly, life is longer, use the magnetic current body sealed, replaced traditional mechanical metal seal, can reduce and carry the pump number of times, avoided phenomenons such as oil leak that the galling seriously leads to and holddown, also increased the petroleum production.
Description
Technical field
The utility model relates to a kind of improvement of oil production equipment seal arrangement, belongs to oil production equipment Magneticfluid Seal Technique field, specifically a kind of device for sealing magnetic fluid being applied to oil extraction pump, is applicable to easy oil leakage and sand card oil extraction pump uses.
Background technique
Leakage of oil and sand card phenomenon is all there is between the widely used oil well pump short-plunger in current oil field and pump barrel, wherein oil leakage phenomenon easily causes pump efficiency to reduce, easily the phenomenon deteriorates equipment such as dry tap are produced time serious, sand card phenomenon easily causes short-plunger and pump barrel to wear and tear, affect the bulk life time of oil production equipment, so improve sealability to raising oil recovery efficiency, reduce equipment loss, improving service life of equipment has vital effect.
Generally metal o-ring is used between conventional oil well pump short-plunger and pump barrel, but metal o-ring easily weares and teares, general oil well pump active time is 2 years, after metal o-ring wearing and tearing, easily cause leakage of oil, time serious, cause not oiling, the easy unloaded operation of pumping unit, not only cause pump barrel to wear and tear and energy waste, also add and put forward pump frequency and reduce oil recovery amount.As Chinese patent application CN200510122437.3 describes a kind of seal construction and oil well pump thereof of oil well pump, by using a kind of rigid sealing ring, reach the object preventing sand card Yu prevent wax card, thus improve pump efficiency, but when after pump work a period of time, this rigid sealing ring is easy to wear, easily causes leakage and holddown.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, good sealing effect, respectively realize with pump barrel between and and plunger between both sides magnetic seal, use magnet fluid sealing, replace traditional mechanical metal sealing, can reduce and carry pump number of times, the phenomenons such as the leakage of oil avoiding galling seriously to cause and holddown, can increase the device for sealing magnetic fluid being applied to oil extraction pump of oil production.
In order to reach above object, the technological scheme that the utility model adopts is: this kind of device for sealing magnetic fluid being applied to oil extraction pump, comprise magnet, magnetic pole and magnetic fluid, it is characterized in that: in the toroidal cavity between the pump barrel and plunger of oil extraction pump, be arranged with magnetic pole, be provided with magnet the outside of magnetic pole is coated, magnet ringwise, the inside and outside sidewall of magnet is provided with the groove of annular, be filled with magnetic fluid in groove, between magnet and pump barrel and between magnet and plunger, be transition fit.
The upper and lower end of described magnet is all provided with seal ring.
The outer side wall of the magnetic fluid in described groove applies one deck and detest magnetic current liquid coating.
Described groove interval arranges multiple, and the width sum of all grooves and the ratio of magnet width are not more than 4/5.
The hierarchy structure of described groove is all consistent, and the quality of the magnetic fluid in each groove is all consistent with density.
The beneficial effects of the utility model are: structure is simple, good sealing effect, to achieve respectively between pump barrel and and plunger between both sides magnetic seal, ensure that sealability better, can guarantee that " zero " leaks within the life of product time limit; Because magnetic fluid is liquid, and there is fretting wear hardly between plunger, longer service life; Use magnet fluid sealing, instead of traditional mechanical metal sealing, can reduce and carry pump number of times, avoid the phenomenons such as leakage of oil that galling seriously causes and holddown, too increase oil production.
Accompanying drawing explanation
Fig. 1 is structure cross-sectional schematic of the present utility model.
In figure: 1, pump barrel; 2, seal ring; 3, magnet; 4, groove; 5, magnetic fluid; 6, magnetic pole; 7, plunger.
Embodiment
The utility model is made with reference to Fig. 1.This kind of device for sealing magnetic fluid being applied to oil extraction pump, comprise magnet 3, magnetic pole 6 and magnetic fluid 5, it is characterized in that: in the toroidal cavity between the pump barrel 1 and plunger 7 of oil extraction pump, be arranged with magnetic pole 6, coatedly in the outside of magnetic pole 6 be provided with magnet 3, magnet 3 ringwise, the inside and outside sidewall of magnet 3 is provided with the groove 4 of annular, in groove 4, is filled with magnetic fluid 5, magnet 3 and be transition fit between pump barrel 1 and plunger 7.
The upper and lower end of described magnet 3 is all provided with seal ring 2, because seal ring 2 serves larger pressure-bearing effect, has disperseed the pressure of magnetic fluid 5, so can play seal action preferably, seal ring 2 can also avoid magnet 3 to be subject to the corrosion of crude oil simultaneously.
The outer side wall of the magnetic fluid 5 in described groove 4 applies one deck and detest magnetic current liquid coating; This main material detesting magnetic current liquid coating is teflon, this is prior art, market is also available, it plays the effect of converging magnetic fluid 5, prevent magnetic fluid 5 from leaking along with plunger 7 moves, thus also improve crushing resistance and tightness, and reduce resistance, reduce the loss of magnetic fluid 5.
Described groove 4 interval arranges multiple, and the width sum of all grooves 4 and the ratio of magnet width should be not more than 4/5, material is thus formed the ring bodies that multiple magnetic fluid 5 is formed.
The hierarchy structure of described groove 4 is all consistent, and the quality of the magnetic fluid 5 in each groove 4 is all consistent with density.
When using the utility model, magnetic pole 6 produces stable magnetic field, loop through magnet 3, in groove 4, magnetic fluid 5 is by magnetic fields, formed " magnetic fluid O type circle " that multilayer is closed, pump barrel 1 and plunger 7 are sealed, reach both sides sealing requirement, prevent crude oil leakage, each " magnetic fluid O type circle " generally can bear and be greater than 0.15-0.2 atm difference, total pressure-bearing is pressure reduction sums at different levels, between plunger 7 and pump barrel 1, just form multiple magnet fluid sealing ring like this, realize multi-stage sealed and entire compression ability of the present utility model can be promoted.
Claims (4)
1. one kind is applied to the device for sealing magnetic fluid of oil extraction pump, comprise magnet (3), magnetic pole (6) and magnetic fluid (5), it is characterized in that: in the toroidal cavity between the pump barrel (1) and plunger (7) of oil extraction pump, be arranged with magnetic pole (6), coatedly in the outside of magnetic pole (6) be provided with magnet (3), magnet (3) ringwise, the inside and outside sidewall of magnet (3) is provided with the groove (4) of annular, be filled with magnetic fluid (5) in groove (4), between magnet (3) and pump barrel (1) and between magnet (3) and plunger (7), be transition fit.
2. a kind of device for sealing magnetic fluid being applied to oil extraction pump according to claim 1, is characterized in that: the top and bottom of described magnet (3) are all provided with seal ring (2).
3. a kind of device for sealing magnetic fluid being applied to oil extraction pump according to claim 1, is characterized in that: described groove (4) interval arranges multiple, and the width sum of all grooves (4) and the ratio of magnet (3) width are not more than 4/5.
4. a kind of device for sealing magnetic fluid being applied to oil extraction pump according to claim 3, is characterized in that: the hierarchy structure of described groove (4) is all consistent, and the quality of the magnetic fluid (5) in each groove (4) is all consistent with density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813468.2U CN205117706U (en) | 2015-10-21 | 2015-10-21 | Be applied to magnetic current body sealing device of oil recovery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813468.2U CN205117706U (en) | 2015-10-21 | 2015-10-21 | Be applied to magnetic current body sealing device of oil recovery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117706U true CN205117706U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520813468.2U Active CN205117706U (en) | 2015-10-21 | 2015-10-21 | Be applied to magnetic current body sealing device of oil recovery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117706U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567912A (en) * | 2016-11-07 | 2017-04-19 | 中国电子科技集团公司第四十八研究所 | Belt transmission device for flat PECVD devices |
| WO2020013722A3 (en) * | 2018-06-08 | 2020-03-12 | Compressor Pump Industrial Srl Romania | Horizontal gas compressor with free lifting piston |
-
2015
- 2015-10-21 CN CN201520813468.2U patent/CN205117706U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567912A (en) * | 2016-11-07 | 2017-04-19 | 中国电子科技集团公司第四十八研究所 | Belt transmission device for flat PECVD devices |
| WO2020013722A3 (en) * | 2018-06-08 | 2020-03-12 | Compressor Pump Industrial Srl Romania | Horizontal gas compressor with free lifting piston |
| US11454231B2 (en) | 2018-06-08 | 2022-09-27 | Compressor Pump Industrial Srl | Horizontal gas compressor with free lifting piston |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |