CN201779004U - Liquid discharge valve of plunger pump - Google Patents
Liquid discharge valve of plunger pump Download PDFInfo
- Publication number
- CN201779004U CN201779004U CN2010202198743U CN201020219874U CN201779004U CN 201779004 U CN201779004 U CN 201779004U CN 2010202198743 U CN2010202198743 U CN 2010202198743U CN 201020219874 U CN201020219874 U CN 201020219874U CN 201779004 U CN201779004 U CN 201779004U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- plunger pump
- valve body
- conical
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 45
- 238000007599 discharging Methods 0.000 claims description 31
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 210000000078 claw Anatomy 0.000 abstract 3
- 238000000605 extraction Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The liquid discharge valve of plunger pump is used in oil extraction and water injection plunger pump in oil field. The cylindrical surface of the valve seat body is provided with an annular groove, and the upper end of the inner hole of the valve seat body is provided with a conical sealing surface; a valve core is arranged in the seat body, four centralizing claws are uniformly distributed at the lower end of the valve core, the diameter of an circumscribed circle formed by the outer walls of the centralizing claws is the same as the inner diameter of the valve seat body, a conical surface body is arranged below a cylinder at the upper end of the valve core, and the inclination of the conical surface body of the valve core is the same as that of a conical sealing surface at the upper end of an inner hole of the valve seat body. A lower end cylinder is arranged between the valve core conical surface body and the righting claw, and the diameter of the lower end cylinder is the same as the inner diameter of the valve seat body. The effect is as follows: the sealing surface of the conical surface body of the valve core of the drain valve of the plunger pump can be not directly brushed by high-pressure liquid, and the service life of the drain valve is prolonged. Low manufacturing cost and convenient installation.
Description
Technical field
The utility model relates to oil field oil-extracting and water-injecting field of mechanical technique, and particularly water filling plunger pump in stratum is a kind of plunger pump liquid discharging valve that improves the plunger pump liquid discharging valve spool life-span, prevents the damage of plunger pump liquid discharging valve valve core sealed cover.
Background technique
At present, in the crude oil exploitation, in order to keep the energy of oil reservoir, must inject water in oil reservoir, these water mainly are to inject oil reservoir by plunger pump pressurization back.At the plunger pump of usefulness, in use there are some problems at present.The plunger pump that oil-field flooding is used, feed liquor valve and liquid discharging valve majority are vertical structure, and under the pressure condition with higher, the life-span of liquid discharging valve is short, and when pressure 15MPa, the mean lifetime of liquid discharging valve is about 700 hours, and the life-span of feed liquor valve is about 3000 hours.Analyzing the liquid discharging valve of these damages, all is that the sealing surface of liquid discharging valve spool damages and to cause poorly sealedly, and the sealing surface of these liquid discharging valve valve seats seldom has damage, because spool and valve seat pairing are used, after spool damaged, valve seat also just can not continue to have used.The main cause that the liquid discharging valve valve core sealed cover damages is, liquid discharging valve is when work, plunger is given the pressurization of the liquid in the pump chamber, liquid after the pressurization promotes the liquid discharging valve spool and moves up, and after spool moved up, the sealing surface on its conical seal (contact) face and the valve seat just formed the passage of flow of fluid, because valve core sealed cover is to hinder flowing of liquid, therefore the liquid of high pressure directly washes away the sealing surface of spool, causes the seal spool surface damage, causes sealing to reduce until not continuing use.
The model utility content
The purpose of this utility model is: a kind of plunger pump liquid discharging valve is provided, can prevent that highly pressurised liquid from directly washing away the conical seal (contact) face of plunger pump liquid discharging valve spool, overcome the conical seal (contact) face that existing plunger pump directly washes away spool, cause the deficiency of spool cone seal surface damage.
The technical solution adopted in the utility model is: the plunger pump liquid discharging valve, mainly to form by valve body, spool, and valve body is the cylinder bodily form, on the valve body cylndrical surface circular groove is arranged, and in the upper end of valve body endoporus conical seal (contact) face is arranged; A spool is arranged in pedestal, and the lower end of spool is evenly distributed with four and sets upright pawl, and the circumscribed circle diameter of setting upright pawl outer wall composition is identical with the valve body internal diameter, sets upright pawl when spool moves up and down and plays centralizing function.Below the spool upper end is cylindrical conical surface body is arranged, the gradient of the conical surface body of spool is identical with the gradient of the conical seal (contact) face of valve body endoporus upper end.It is characterized in that: at valve cone face body and set upright a lower end cylindrical body is arranged between the pawl, the cylindrical diameter in lower end is identical with the valve body internal diameter, and lower end cylinder physical efficiency plays seal action.Because the common sealing that forms highly pressurised liquid of the lower end cylindrical body of spool and conical surface body, and the lower end cylinder physical efficiency Time Delay Opening sealing of spool, thereby the liquid of avoiding high pressure directly washes away the conical surface of spool, cause the conical surface to be washed away early stage damage by the liquid of high pressure, can not closely cooperate with the conical seal (contact) face on the valve body, cause poorly sealedly, pump delivery and pressure descend.
The cylindrical outer wall in described spool lower end has annular groove, and groove plays the current deflecting effect.
The ratio of cylindrical height in described spool lower end and valve body diameter of bore is between 1: 7～12.
Plunger pump liquid discharging valve working principle: below spool valve cone shape sealing surface a lower end cylindrical body is arranged, the liquid discharging valve spool is when opening, and behind the segment distance that will move up earlier, the liquid of high pressure could be discharged in valve body.So just avoid the liquid of high pressure directly to wash away the sealing surface of liquid discharging valve spool conical surface body, cause sealing surface to damage in early days, reach and improve liquid discharging valve working life.
The beneficial effects of the utility model: the utility model plunger pump liquid discharging valve, can realize that the liquid of high pressure does not directly wash away plunger pump liquid discharging valve spool conical surface body sealing surface, improve the liquid discharging valve purpose in working life.Low cost of manufacture, easy for installation.
Description of drawings
Fig. 1 is the utility model plunger pump liquid discharging valve structural profile schematic representation.
Fig. 2 is the worm's eye view of Fig. 1.The position of presentation graphs 1 turnover section.
Among the figure, 1. valve body, 2. spool, 3. cylindrical body, 4. conical seal (contact) face is 5. set upright pawl.
Embodiment
Embodiment 1: with a plunger pump liquid discharging valve is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model plunger pump liquid discharging valve is made up of valve body 1, spool 2, and valve body 1 is the cylinder bodily form, and two circular grooves are arranged on valve body 1 cylndrical surface, in the upper end of valve body 1 endoporus a conical seal (contact) face 4 is arranged.A spool 2 is arranged in pedestal 1.Consult Fig. 2.The lower end of spool 2 is evenly distributed with four and sets upright pawl 5, and the circumscribed circle diameter of setting upright pawl 5 outer walls composition is identical with valve body 1 internal diameter.Consult Fig. 1.A conical surface body is arranged below spool 2 upper ends are cylindrical, and the gradient of the conical surface body of spool 2 is identical with the gradient of the conical seal (contact) face 4 of valve body 1 endoporus upper end.Above structure is identical with existing plunger pump liquid discharging valve, and those skilled in the art can understand clear.
The places different with existing plunger pump liquid discharging valve are: at spool 2 conical surface bodies and set upright a lower end cylindrical body 3 is arranged between the pawl 5, the diameter of lower end cylindrical body 3 is identical with valve body 1 internal diameter.The height of spool 2 lower end cylindrical bodys 3 is 1: 10 with the ratio of valve body 1 diameter of bore.The outer wall of spool 2 lower end cylindrical bodys 3 has the bipassage ring connected in star.
Also can understand like this, spool 2 upper ends are upper end cylindrical bodys, and conical surface body is arranged at cylindrical bottom, upper end, is lower end cylindrical body 3 below the conical surface body, have four to set upright pawl 5 below the lower end cylindrical body 3.
Claims (3)
1. a plunger pump liquid discharging valve mainly is made up of valve body (1), spool (2), and valve body (1) is the cylinder bodily form, on valve body (1) cylndrical surface circular groove is arranged, and in the upper end of valve body (1) endoporus conical seal (contact) face (4) is arranged; A spool (2) is arranged in pedestal (1), the lower end of spool (2) is evenly distributed with four and sets upright pawl (5), the circumscribed circle diameter of setting upright pawl (5) outer wall composition is identical with valve body (1) internal diameter, below spool (2) upper end is cylindrical conical surface body is arranged, the gradient of the conical surface body of spool (2) is identical with the gradient of the conical seal (contact) face (4) of valve body (1) endoporus upper end; It is characterized in that: at spool (2) conical surface body and set upright a lower end cylindrical body (3) is arranged between the pawl (5), the diameter of lower end cylindrical body (3) is identical with valve body (1) internal diameter.
2. plunger pump liquid discharging valve according to claim 1 is characterized in that: the outer wall of described spool (2) lower end cylindrical body (3) has annular groove.
3. plunger pump liquid discharging valve according to claim 1 is characterized in that: the ratio of the height of described spool (2) lower end cylindrical body (3) and valve body (1) diameter of bore is between 1: 7～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202198743U CN201779004U (en) | 2010-05-31 | 2010-05-31 | Liquid discharge valve of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202198743U CN201779004U (en) | 2010-05-31 | 2010-05-31 | Liquid discharge valve of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779004U true CN201779004U (en) | 2011-03-30 |
Family
ID=43792216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202198743U Expired - Lifetime CN201779004U (en) | 2010-05-31 | 2010-05-31 | Liquid discharge valve of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363169A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
-
2010
- 2010-05-31 CN CN2010202198743U patent/CN201779004U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363169A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
| CN103363169B (en) * | 2012-04-06 | 2015-07-08 | 重庆博张机电设备有限公司 | Pressure regulating valve |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |