CN201198750Y - Anti-high pressure reverse circulation valve - Google Patents
Anti-high pressure reverse circulation valve Download PDFInfo
- Publication number
- CN201198750Y CN201198750Y CNU2008203007182U CN200820300718U CN201198750Y CN 201198750 Y CN201198750 Y CN 201198750Y CN U2008203007182 U CNU2008203007182 U CN U2008203007182U CN 200820300718 U CN200820300718 U CN 200820300718U CN 201198750 Y CN201198750 Y CN 201198750Y
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- China
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- central tube
- plush copper
- outside
- high pressure
- inboard
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- Expired - Lifetime
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Abstract
The utility model relates to a valve used in paraffin hot-removal operation of pumping well, and is a high-pressure-resistance reverse recycle valve, comprising a special coupler, an external sealing pot, a central tube, an internal sealing pot and backwashing rubber cups. The external sealing pot is arranged at the outer side of the central tube. The inner side of the lower end of the special coupler is fixedly connected with the outer side of the upper end of the central tube. The outer side of the lower end of the special coupler is fixedly connected with the inner side of the upper end of the external sealing pot. A backwashing cavity is formed between the central tube and the external sealing pot. A backwashing rubber cup and the internal sealing pot are arranged in the backwashing cavity. The inner side of the lower end of the internal sealing pot is fixedly connected with the inner side of the lower end of the central tube. A backwashing rubber cup is arranged over the internal sealing pot. The rubber cup self-seal type reverse recycle valve has reasonable and compact structure, is convenient to be used, is reliable for sealing, can endure comparatively high internal pressure, is easy to be opened and closed, is not easy to be blocked, has large area of passage, has high adaptability and reliability, not only reduce maintenance rate, but also greatly improves working efficiency.
Description
One, technical field
The utility model relates to the valve of the hot-washing wax remover operation that is used for pumpingh well, is a kind of high pressure resistant reverse circulation valve.
Two, background technology
Along with oil field development advances, more and more higher for the requirement of oil field oil recovery technique operation, technical difficulty is also increasing.Repeatedly reverse circulation valve has played the effect that can not be substituted as a kind of oil field down-hole complete sets of Techniques instrument commonly used in the variation that realizes the tubing string function.Existing repeatedly reverse circulation valve in use often occurs being not closed completely and the not high situation of pressure-bearing, and this just causes tubing string to lose efficacy, and has to propose tubing string and changes instrument, has caused the repetition workover treatment, has increased operating cost.
Three, summary of the invention
The utility model provides a kind of high pressure resistant reverse circulation valve, has overcome the deficiency of above-mentioned prior art, and it can solve effectively that reverse circulation valve in use occurs is not closed completely and problem that pressure-bearing is not high.
The technical solution of the utility model realizes by following measure: a kind of high pressure resistant reverse circulation valve comprises special box cupling, external seal tube, central tube, interior sealing drum and backwash leather cup; In the outside of central tube the external seal tube is arranged, the inboard outside, upper end with central tube, the lower end of special box cupling is fixed together, the outside, lower end of special box cupling is fixed together with the inboard, upper end of external seal tube, form the backwash chamber between central tube and the external seal tube, backwash leather cup and interior sealing drum are arranged in the backwash chamber, the inboard outside, lower end with central tube, the lower end of interior sealing drum is fixed together, the backwash leather cup is arranged above interior sealing drum, plush copper and outer plush copper in the backwash leather cup comprises, there is outer plush copper the upper end of interior plush copper, interior plush copper and outer plush copper are fixed together, there is boss in the outside at central tube, the upper surface of interior plush copper withstands on the lower surface of boss, and the lower surface of interior plush copper withstands on the upper surface of interior sealing drum; The lateral surface of outer plush copper can withstand on the inside wall of external seal tube; Have to be no less than one through hole on central tube, the import of each through hole communicates with the backwash chamber of interior plush copper below, and the outlet of each through hole communicates with the inner chamber of central tube.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
Above-mentioned through hole can have two axially-aligned.
An above-mentioned through hole is outside on the pairing central tube in backwash chamber of plush copper top; Another through hole is outside on the inboard pairing central tube of plush copper.
The upper end of sealing drum can be fluted in above-mentioned, sealing drum is installed in making near the garter spring of central tube in groove.
Between the outside of the inboard of plush copper and central tube sealing ring can be installed in above-mentioned.
Between the outside, lower end of above-mentioned special box cupling and the inboard, upper end of external seal tube sealing ring can be installed.
The inboard outside, lower end with central tube, the lower end of sealing drum can be fixed together by screw thread in above-mentioned.
The utility model reasonable and compact in structure, easy to use, not only sealing is reliable, and presses higher in bearing; Not only easily open and close, difficult card block up, and area of passage is big, therefore has stronger compliance and reliability, has not only reduced maintenance rate, has also improved operating efficiency greatly.
Four, description of drawings
Accompanying drawing 1 is the main TV structure schematic diagram of the utility model most preferred embodiment;
Coding in the accompanying drawing is respectively: 1 is special box cupling, and 2 is the external seal tube, and 3 is central tube, and 4 are the backwash chamber, and 5 is the inside wall of external seal tube, and 6 is through hole, and 7 is sealing ring, and 8 is interior plush copper, and 9 is outer plush copper, and 10 is interior sealing drum, and 11 is garter spring, and 12 is boss.
Five, the specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this high pressure resistant reverse circulation valve comprises special box cupling 1, external seal tube 2, central tube 3, interior sealing drum 10 and backwash leather cup; In the outside of central tube 3 external seal tube 2 is arranged, the inboard outside, upper end with central tube 3, the lower end of special box cupling 1 is fixed together, the outside, lower end of special box cupling 1 is fixed together with the inboard, upper end of external seal tube 2, form backwash chamber 4 between central tube 3 and the external seal tube 2, backwash leather cup and interior sealing drum 10 are arranged in backwash chamber 4, the inboard outside, lower end with central tube 3, the lower end of interior sealing drum 10 is fixed together, the backwash leather cup is arranged above interior sealing drum 10, plush copper 8 and outer plush copper 9 in the backwash leather cup comprises, there is outer plush copper 9 upper end of interior plush copper 8, interior plush copper 8 and outer plush copper 9 are fixed together, in the outside of central tube 3 boss 12 is arranged, the upper surface of interior plush copper 8 withstands on the lower surface of boss 12, and the lower surface of interior plush copper 8 withstands on the upper surface of interior sealing drum 10; The lateral surface of outer plush copper 9 can withstand on the inside wall 5 of external seal tube; The through hole 6 that is no less than one is arranged on central tube 3, and the import of each through hole 6 communicates with the backwash chamber 4 of interior plush copper 8 tops, and the outlet of each through hole 6 communicates with the inner chamber of central tube 3.Like this, when tubing pressure during greater than casing pressure, the backwash leather cup just can packing oil jacket annular space; When the anti-cycle operation of needs, suppress inside wall 5 disengagings of the lateral surface and the external seal tube that make the outer plush copper 9 that produces that very small pressure difference can make between oil, the cover from sleeve pipe, form passage, wash, kill job, operation finishes under the situation of oil, cover pressure balance, the lateral surface of outer plush copper 9 withstands on again on the inside wall 5 of external seal tube under the effect of self elastic force, and pathway closure presses performance to guarantee that pumpingh well short circuit heat washes tubing string and proceed the ordinary production operation in unidirectional the holding of backwash leather cup.
Can according to actual needs above-mentioned high pressure resistant reverse circulation valve be made further optimization and/or improvements:
As shown in Figure 1, through hole 6 preferably has two axially-aligned, and through hole 6 is outside on the backwash chamber 4 pairing central tubes 3 of plush copper 9 tops; Another through hole 6 on the plush copper 9 inboard pairing central tubes 3, like this, can guarantee high pressure resistant reverse circulation valve when valve open outside, has enough area of passages, chock pressure difference little.
As shown in Figure 1, fluted in the upper end of interior sealing drum 10, sealing drum 10 is installed in making near the garter spring 11 of central tube 3 in groove, like this, sealing drum 10 is more tight with being connected of central tube 3 in just making.
As shown in Figure 1, in order to increase sealing, sealing ring 7 is installed between the outside of the inboard of interior plush copper 8 and central tube 3, interior plush copper 8 preferably adopts steel frame, outer plush copper 9 preferably adopts rubber parts, rubber parts on the Elastic Steel skeleton, because rubber parts has good elastic strength, therefore helps opening and closing passage by sulfuration adhesion more.
As shown in Figure 1, in order to increase sealing, between the outside, lower end of special box cupling 1 and the inboard, upper end of external seal tube 2 sealing ring 7 is installed.
As shown in Figure 1, for the ease of connecting and maintenance, the inboard outside, lower end with central tube 3, the lower end of interior sealing drum 10 is fixed together by screw thread.
In the utility model: special box cupling adopts existing technique known.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
Claims (10)
1. a high pressure resistant reverse circulation valve is characterized in that comprising special box cupling, external seal tube, central tube, interior sealing drum and backwash leather cup; In the outside of central tube the external seal tube is arranged, the inboard outside, upper end with central tube, the lower end of special box cupling is fixed together, the outside, lower end of special box cupling is fixed together with the inboard, upper end of external seal tube, form the backwash chamber between central tube and the external seal tube, backwash leather cup and interior sealing drum are arranged in the backwash chamber, the inboard outside, lower end with central tube, the lower end of interior sealing drum is fixed together, the backwash leather cup is arranged above interior sealing drum, plush copper and outer plush copper in the backwash leather cup comprises, there is outer plush copper the upper end of interior plush copper, interior plush copper and outer plush copper are fixed together, there is boss in the outside at central tube, the upper surface of interior plush copper withstands on the lower surface of boss, and the lower surface of interior plush copper withstands on the upper surface of interior sealing drum; The lateral surface of outer plush copper can withstand on the inside wall of external seal tube; Have to be no less than one through hole on central tube, the import of each through hole communicates with the backwash chamber of interior plush copper top, and the outlet of each through hole communicates with the inner chamber of central tube.
2. high pressure resistant reverse circulation valve according to claim 1 is characterized in that through hole has two axially-aligned.
3. high pressure resistant reverse circulation valve according to claim 2 is characterized in that a through hole is outside on the pairing central tube in backwash chamber of plush copper top; Another through hole is outside on the inboard pairing central tube of plush copper.
4. according to claim 1 or 2 or 3 described high pressure resistant reverse circulation valves, the upper end of sealing drum is fluted in it is characterized in that, sealing drum is installed in making near the garter spring of central tube in groove.
5. according to claim 1 or 2 or 3 described high pressure resistant reverse circulation valves, between the outside of the inboard of plush copper and central tube sealing ring is installed in it is characterized in that.
6. high pressure resistant reverse circulation valve according to claim 4 is equipped with sealing ring between the outside of the inboard of plush copper and central tube in it is characterized in that.
7. according to claim 1 or 2 or 3 described high pressure resistant reverse circulation valves, it is characterized in that between the inboard, upper end of the outside, lower end of special box cupling and external seal tube sealing ring being installed.
8. high pressure resistant reverse circulation valve according to claim 6 is characterized in that between the inboard, upper end of the lower end outside of special box cupling and external seal tube sealing ring being installed.
9. according to claim 1 or 2 or 3 described high pressure resistant reverse circulation valves, the inboard outside, lower end with central tube, the lower end of sealing drum is fixed together by screw thread in it is characterized in that.
10. high pressure resistant reverse circulation valve according to claim 8, the inboard outside, lower end with central tube, the lower end of sealing drum is fixed together by screw thread in it is characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203007182U CN201198750Y (en) | 2008-05-09 | 2008-05-09 | Anti-high pressure reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203007182U CN201198750Y (en) | 2008-05-09 | 2008-05-09 | Anti-high pressure reverse circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198750Y true CN201198750Y (en) | 2009-02-25 |
Family
ID=40449906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203007182U Expired - Lifetime CN201198750Y (en) | 2008-05-09 | 2008-05-09 | Anti-high pressure reverse circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198750Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195393A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing and paraffin removal unit with dosage channel |
| CN103195392A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing wax removing device |
-
2008
- 2008-05-09 CN CNU2008203007182U patent/CN201198750Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195393A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing and paraffin removal unit with dosage channel |
| CN103195392A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing wax removing device |
| CN103195392B (en) * | 2013-04-15 | 2016-05-25 | 中国海洋石油总公司 | Anti-pollution thermal washing paraffin removal unit |
| CN103195393B (en) * | 2013-04-15 | 2016-05-25 | 中国海洋石油总公司 | With the anti-pollution thermal washing paraffin removal unit of injection passage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090225 |
|
| CX01 | Expiry of patent term |