CN204692672U - A kind of improved pressure adjustable check valve - Google Patents
A kind of improved pressure adjustable check valve Download PDFInfo
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- CN204692672U CN204692672U CN201520320504.1U CN201520320504U CN204692672U CN 204692672 U CN204692672 U CN 204692672U CN 201520320504 U CN201520320504 U CN 201520320504U CN 204692672 U CN204692672 U CN 204692672U
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- spring
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Abstract
The utility model relates to a kind of improved pressure adjustable check valve, comprise valve body (1), valve seat (3), flap (4) and valve gap (6), be tightly connected between valve body (1) and valve seat (3), valve gap (6) top is provided with driving mechanism, driving mechanism comprises handwheel (10), depression bar (9), cylinder body (8), spring (7) and push rod (5), spring (7) is arranged in cylinder body (8), the lower end of spring (7) is connected with push rod (5), push rod (5) lower end connects flap (4), be tightly connected between the valve port of flap (4) and valve seat (3), the upper end of spring (7) is connected with depression bar (9), depression bar (9) upper end connects handwheel (10), the utility model is compared with the existing technology, novel structure, simple, not only achieves top and regulates, be convenient to the operation of driller, and carry out adjustment force numerical quantization, accurately can control, alleviate the labor intensity of driller.
Description
[technical field]
The utility model relates to oil drilling Lift check valve technical field, specifically a kind of improved pressure adjustable check valve.
[background technique]
At present, the Lift check valve that oil drilling kill-job scene generally uses, has following features:
(1) seat design is metal frame vulcanized rubber structure, directly adopts the rubber seal of sulfuration, also adopt the rubber seal of sulfuration between valve seat and flap between valve seat and valve body.Its shortcoming is when the space of kill mud between valve seat and flap, the rubber of easy scratch sulfuration, and rubber surface easily adheres to the mud grains of sand, and fit between valve seat and flap not tight, sealing will be lost efficacy; And kill mud is containing acidic materials, easily corrode valve seal position, the sealing between valve seat and valve body will be lost efficacy.
(2) spring design that the power of promotion flap and valve seat initial sealing is used is arranged in valve pocket.Its shortcoming is that compressive force is fixed, and cannot regulate when after the good postforming grade of spring design.And spring is immersed in drilling mud liquid and is easily corroded, when kill-job speed is fast, the impact force that spring receives is comparatively large, yielding, lost efficacy.
(3) power straining flap and the valve base sealing power of screw fastened that portion designs on the lower improves.Its shortcoming be Cock screw apparatus design at body base, add leakage point, and by the restriction in space, workman's health is squatted down, regulates difficulty with spanner.
[model utility content]
The purpose of this utility model is exactly will solve above-mentioned deficiency and provide a kind of improved pressure adjustable check valve, not only achieve top to regulate, be convenient to the operation of driller, and carry out adjustment force numerical quantization, accurately can control, alleviate the labor intensity of driller.
Design a kind of improved pressure adjustable check valve for achieving the above object, comprise valve body 1, valve seat 3, flap 4 and valve gap 6, be tightly connected between described valve body 1 and valve seat 3, described valve gap 6 top is provided with driving mechanism, described driving mechanism comprises handwheel 10, depression bar 9, cylinder body 8, spring 7 and push rod 5, described spring 7 is arranged in cylinder body 8, the lower end of described spring 7 is connected with push rod 5, described push rod 5 lower end connects flap 4, be tightly connected between described flap 4 and the valve port of valve seat 3, the upper end of described spring 7 is connected with depression bar 9, described depression bar 9 upper end connects handwheel 10.
Described valve seat 3 is designed to the bowl structure with interior male cone (strobilus masculinus), the interior male cone (strobilus masculinus) time processing of described valve seat 3 is shaping, described flap 4 lower end is provided with the conical surface matched with valve seat 3 inner conical surface, and the conical surface between described flap 4 and valve seat 3 is tightly connected by pile-up welding hard alloy layer.
Adopt metal o-ring 1 to be tightly connected between described valve body 1 and valve seat 3, between described flap 4 and the valve port of valve seat 3, adopt metal o-ring 2 11 to be tightly connected.
Described metal o-ring 1 is set to inner cone noodle bowl formula structure, and described metal o-ring 1 adopts stainless steel material to make.
Described spring 7 adopts INCONEL spring steel alloy to make.
Described depression bar 9 lower periphery is arranged with depression bar cover 12, and described depression bar cover 12 is fixedly connected on cylinder body 8 upper end, and described depression bar overlaps 12 inwalls and is provided with inner trapezoidal thread, and described depression bar 9 outer wall is provided with the outer trapezoidal thread matched with inner trapezoidal thread.
Described depression bar 9 top peripheral is provided with graduation line.
The utility model compared with the existing technology, as follows if any advantage:
Between valve body with valve seat (1), all adopt metal sealing to be connected between flap with valve seat, not only sealing is reliable, stable, and applicable high pressure, high temperature, high sulfur resistive operation;
(2) flap and valve seat metal-clad face, not only antiscour, wear-resistant, repeatedly kill job and large discharge operation can also be used for;
(3) the adjustable design of spring force belongs to innovative design, and top regulates is convenient to the operation of workman, and carry out adjustment force numerical quantization, accurately can control;
(4) the replacing frequency of valve seat and flap is few, alleviates the labor intensity of driller;
To sum up: adjustable-pressure safety check described in the utility model is through verification experimental verification, and it regulates reliable, and high pressure sealing performance is good, receives the evaluation of Oil Field expert to product topnotch.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present utility model;
In figure: 1, valve body 2, valve seat metal o-ring 3, valve seat 4, flap 5, push rod 6, valve gap 7, spring 8, cylinder body 9, depression bar 10, handwheel 11, metal o-ring 2 12, depression bar cover.
[embodiment]
Below in conjunction with accompanying drawing, following further illustrating is done to the utility model:
As shown in drawings, the utility model comprises: valve body 1, valve seat 3, flap 4 and valve gap 6, be tightly connected between valve body 1 and valve seat 3, valve gap 6 top is provided with driving mechanism, and driving mechanism comprises handwheel 10, depression bar 9, cylinder body 8, spring 7 and push rod 5, spring 7 is arranged in cylinder body 8, the lower end of spring 7 is connected with push rod 5, and push rod 5 lower end connects flap 4, is tightly connected between the valve port of flap 4 and valve seat 3, the upper end of spring 7 is connected with depression bar 9, and depression bar 9 upper end connects handwheel 10; Wherein, spring 7 compressive force is realized by top handwheel 10 rotation forces depression bar 9, and spring 7 adopts INCONEL spring steel alloy to make, and by solid solution and double aging heat treatment, makes spring have high-performance return function and long life; Metal o-ring 1 is adopted to be tightly connected between valve body 1 and valve seat 3, metal o-ring 2 11 is adopted to be tightly connected between the valve port of flap 4 and valve seat 3, metal o-ring 1 is set to inner cone noodle bowl formula structure, and metal o-ring 1 adopts 300 stainless steel materials to make.
In the utility model, valve seat 3 is designed to the bowl structure with interior male cone (strobilus masculinus), the interior male cone (strobilus masculinus) time processing of valve seat 3 is shaping, and flap 4 lower end is provided with the conical surface matched with valve seat 3 inner conical surface, and the conical surface between flap 4 and valve seat 3 is tightly connected by pile-up welding hard alloy layer.Depression bar 9 lower periphery is arranged with depression bar cover 12, and depression bar cover 12 is fixedly connected on cylinder body 8 upper end, and depression bar overlaps 12 inwalls and is provided with inner trapezoidal thread, and depression bar 9 outer wall is provided with the outer trapezoidal thread matched with inner trapezoidal thread, and depression bar 9 top peripheral is provided with graduation line.
The utility model belongs to kill line relevant equipment in oil drilling and extracting equipment, the equipment that mud press-in shaft bottom is required, belongs to field of machining.Seal pressure design between its valve seat and flap is provided by the adjustable high-performance return spring in top, and spring is rotated by top handwheel passes on powered compressor by depression bar.It is the sealing of metal and metal between valve seat and valve body, it is also the sealing of metal and metal between valve seat and flap, be different from the structure of other flexible rubber dam, thus the damage of mud to flexible seals can be avoided to cause seepage, the simultaneously violent scour that flows to of the metal layer impedance high-pressure slurry of high hardness.This safety check has all Characteristic and function of general check valve, also can be used as the overflow modulating valve in kill line.The parts portion such as spring contact high pressure also has the mud of chemical property, prevents corrosion, avoids spring corrosion and mud washes away rear inefficacy, and valve no longer has non-return effect.
In the utility model, seat design is bowl structure, inner conical surface pile-up welding hard alloy, and interior male cone (strobilus masculinus) time processing is shaping, is designed with the sealing of stainless steel cone-shape metallic leak-proof ring, flap sealing cone surfacing cemented carbide between valve seat and valve body.It has following features: the space of (1) kill mud between valve seat and flap, contact be carbide surface, the intensity of cemented carbide far above the hardness of the grains of sand in mud, surface anticorrosive and wear-resistant.Alloy surface roughness requirements is high, and the grains of sand can not adhere to; (2) be designed with the sealing of stainless steel cone-shape metallic leak-proof ring between valve seat and valve body, valve seal position does not touch kill mud liquid.
In the utility model, compress flap and valve seat spring design used in valve upper part of the cover driving mechanism.It has following features: spring does not touch kill mud, can not be washed away and corrode; Spring design is in outside, and it is convenient to change, and does not connect the material requirements of well liquid medium low.
In the utility model, Regulation spring power is regulated by upper hand wheel drive depression bar.It has following features: driving mechanism design is on valve top, and trapezoidal thread transmission regulates accurately, has microscale, observe the size of compressive force from depression bar on depression bar top; Direct rotation handwheel regulates, and driller does not need to bow to valve body lower portion and regulates, and Security is good.
The utility model is not by the restriction of above-mentioned mode of execution; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (7)
1. an improved pressure adjustable check valve, comprise valve body (1), valve seat (3), flap (4) and valve gap (6), be tightly connected between described valve body (1) and valve seat (3), it is characterized in that: described valve gap (6) top is provided with driving mechanism, described driving mechanism comprises handwheel (10), depression bar (9), cylinder body (8), spring (7) and push rod (5), described spring (7) is arranged in cylinder body (8), the lower end of described spring (7) is connected with push rod (5), described push rod (5) lower end connects flap (4), be tightly connected between the valve port of described flap (4) and valve seat (3), the upper end of described spring (7) is connected with depression bar (9), described depression bar (9) upper end connects handwheel (10).
2. improved pressure adjustable check valve as claimed in claim 1, it is characterized in that: described valve seat (3) is designed to have the bowl structure of interior male cone (strobilus masculinus), the interior male cone (strobilus masculinus) time processing of described valve seat (3) is shaping, described flap (4) lower end is provided with the conical surface matched with valve seat (3) inner conical surface, and the conical surface between described flap (4) and valve seat (3) is tightly connected by pile-up welding hard alloy layer.
3. improved pressure adjustable check valve as claimed in claim 1, it is characterized in that: between described valve body (1) and valve seat (3), adopt metal o-ring one (2) to be tightly connected, between the valve port of described flap (4) and valve seat (3), adopt metal o-ring two (11) to be tightly connected.
4. improved pressure adjustable check valve as claimed in claim 3, is characterized in that: described metal o-ring one (2) is set to inner cone noodle bowl formula structure, and described metal o-ring one (2) adopts stainless steel material to make.
5. improved pressure adjustable check valve as claimed in claim 4, is characterized in that: described spring (7) adopts INCONEL spring steel alloy to make.
6. improved pressure adjustable check valve as claimed in claim 5, it is characterized in that: described depression bar (9) lower periphery is arranged with depression bar cover (12), described depression bar cover (12) is fixedly connected on cylinder body (8) upper end, described depression bar cover (12) inwall is provided with inner trapezoidal thread, and described depression bar (9) outer wall is provided with the outer trapezoidal thread matched with inner trapezoidal thread.
7. improved pressure adjustable check valve as claimed in claim 6, is characterized in that: described depression bar (9) top peripheral is provided with graduation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320504.1U CN204692672U (en) | 2015-05-18 | 2015-05-18 | A kind of improved pressure adjustable check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520320504.1U CN204692672U (en) | 2015-05-18 | 2015-05-18 | A kind of improved pressure adjustable check valve |
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| Publication Number | Publication Date |
|---|---|
| CN204692672U true CN204692672U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520320504.1U Active CN204692672U (en) | 2015-05-18 | 2015-05-18 | A kind of improved pressure adjustable check valve |
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| CN (1) | CN204692672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864132A (en) * | 2015-05-18 | 2015-08-26 | 上海以琳石油机械制造有限公司 | Pressure adjustable type check valve |
-
2015
- 2015-05-18 CN CN201520320504.1U patent/CN204692672U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864132A (en) * | 2015-05-18 | 2015-08-26 | 上海以琳石油机械制造有限公司 | Pressure adjustable type check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai City, Jinshan District Shanghai city 201506 Yuegong Jinshan Industrial Zone Road No. 885 Patentee after: Fangzheng valve group Shanghai Co.,Ltd. Address before: Shanghai City, Jinshan District Shanghai city 201506 Yuegong Jinshan Industrial Zone Road No. 885 Patentee before: SHANGHAI ELIM PETROLEUM MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |