CN205401774U - Piston type safety valve - Google Patents
Piston type safety valve Download PDFInfo
- Publication number
- CN205401774U CN205401774U CN201620165802.2U CN201620165802U CN205401774U CN 205401774 U CN205401774 U CN 205401774U CN 201620165802 U CN201620165802 U CN 201620165802U CN 205401774 U CN205401774 U CN 205401774U
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- China
- Prior art keywords
- valve
- piston
- cylinder body
- piston type
- underbeam
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 8
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a piston type safety valve, which comprises the following components: a valve body, a valve cove, cylinder body and casing, install two disk seats in the valve body, be equipped with the flashboard between two disk seats, valve body and valve cover connection, install the underbeam on the valve gap, the casing is installed on the underbeam, the cylinder body is installed on the casing, the flashboard is connected with a valve rod, the valve rod is connected with an action bars, install fit nut on the action bars, the cylinder body is internally provided with the piston, the below of piston is equipped with the spring holder, fit nut sets up in the spring holder, be equipped with the steel ball between fit nut and the spring holder, be equipped with the spring between spring holder and the underbeam, hinge joint has the ejector pin, be equipped with on the ejector pin and observe the cover. The utility model discloses simple structure, small, the transmission is steady reliable, the flashboard open and close rapid convenience, the stability and the reliable degree ideal of during operation. Be equipped with the steel ball between fit nut and the spring holder, in compression spring, can reduce friction with the assembly moment of torsion, work is more stable.
Description
Technical field
This utility model relates to technical field of petroleum extraction, is specifically related to a kind of piston type relief valve.
Background technology
In oil exploitation process; every mouthful of well all must install a set of wellhead assembly; wellhead assembly is all made up of tubing head and (gas) tree of recovering the oil; wherein SSV is mainly used in well site safeguard protection under oil and gas leakage, the emergency situation such as catch fire; different according to the drive source used, it is divided into surge relief valve and Pneumatic safety valve two kinds.Existing Pneumatic safety valve arrangement is complicated, and volume is big, and assembling moment of torsion is big, and operationally, stability and reliability are undesirable.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is in that to provide a kind of piston type relief valve.This piston type relief valve is simple and compact for structure, and volume is little, and stable drive is reliable, and assembling moment of torsion is little, and it is convenient rapidly to open and close.
nullFor realizing above-mentioned technical purpose，Reach above-mentioned technique effect，This utility model is achieved through the following technical solutions: a kind of piston type relief valve，Including valve body、Valve gap、Cylinder body and housing，The middle part of described valve body is provided with two valve seats，The centre of two valve seats is provided with longitudinally movable flashboard，The upper end of valve body is connected with valve gap，Valve gap is provided with a underbeam，Described housing is arranged on described underbeam，Described cylinder body is installed on the housing，The top of described flashboard is connected with a valve rod，This valve rod described valve gap of traverse，And be arranged in described housing，The upper end of valve rod is connected with an action bars，The upper end of this action bars is provided with an attaching nut，A piston it is provided with in described cylinder body，This piston be connected with a spring base，Described attaching nut is arranged in this spring base，And it is provided with steel ball between this attaching nut and spring base，It is provided with spring between described spring base and underbeam，It is provided with filler assembly between described valve rod and valve gap，This filler assembly is arranged over gland，The top of described piston is connected to a push rod，Described push rod is provided with observation cover.
Further, it is provided with O between medial wall and the described piston of described cylinder body.
Further, the upper end of described cylinder body is provided with upper cylinder cover, and this upper cylinder cover is provided with overflow valve.
Further, described valve gap is provided with oil syringe.
Further, the left end of described valve body and right-hand member are equipped with flange arrangement.
Further, it is provided with metallic packing ring between described valve body and valve gap.
The beneficial effects of the utility model are: this utility model, by entering the dynamic action of the gas of cylinder body, drives piston to move up and down, thus piston drives flashboard to move up and down by valve rod, and under the mating reaction of spring, completes the switching motion of flashboard.This piston type relief valve is simple and compact for structure, and volume is little, and stable drive is reliable, and the keying of flashboard facilitates rapidly, and stability and reliability during work are desirable.It is provided with steel ball between attaching nut and spring base in this utility model, thus when compression spring, it is possible to reduce friction and assembling moment of torsion so that total is operationally relatively reliable stable.The top of the piston in this utility model is connected to a push rod, and push rod is provided with observation cover, can observe the switch conditions of this relief valve at any time thereby through the cooperation observing cover and push rod.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model being made apparent clear and definite defining.
As it is shown in figure 1, a kind of piston type relief valve, including valve body 1, valve gap 2, cylinder body 3 and housing 4.Being provided with linear runner in valve body 1, medium flows to unrestricted, and media flow resistance is little.nullThe middle part of described valve body 1 is provided with two valve seats 5，The centre of two valve seats 5 is provided with longitudinally movable flashboard 6，The upper end of valve body 1 is connected with valve gap 2，Valve gap 2 is provided with a underbeam 7，Described housing 4 is arranged on described underbeam 7，Described cylinder body 3 is arranged on described housing 4，The top of described flashboard 6 is connected with a valve rod 8，This valve rod 8 described valve gap 2 of traverse，And be arranged in described housing 4，The upper end of valve rod 8 is connected with an action bars 9，The upper end of this action bars 9 is provided with an attaching nut 10，A piston 11 it is provided with in described cylinder body 3，This piston 11 be connected with a spring base 12，Described attaching nut 10 is arranged in this spring base 12，And it is provided with steel ball 14 between this attaching nut 10 and spring base 12，It is provided with spring 13 between described spring base 12 and underbeam 7，It is provided with filler assembly 15 between described valve rod 8 and valve gap 2，This filler assembly 15 is arranged over gland 16，The top of described piston 11 is connected to a push rod 17，Described push rod 17 is provided with observation cover 18.
Furtherly, it is provided with O 19 between medial wall and the described piston 11 of described cylinder body 3, it is ensured that the sealing between piston 11 and cylinder body 3.
Furtherly, the upper end of described cylinder body 3 is provided with upper cylinder cover 20, and this upper cylinder cover 20 is provided with overflow valve 21.
Furtherly, described valve gap 2 is provided with oil syringe 22.
Furtherly, left end and the right-hand member of described valve body 1 are equipped with flange arrangement, and easy installation and removal is quick.
Furtherly, it is provided with metallic packing ring between described valve body 1 and valve gap 2, improves the sealing between valve body and valve gap.
During valve closing, spring is in a state of nature.During work, in cylinder body 3, squeeze into gas by overflow valve 21.When after the working chamber that gas enters in cylinder body 3, gas pressure promotes piston 11, piston 11 drives action bars 9 to move down, valve rod 8 drives flashboard 6 to move downward simultaneously, spring 13 is compressed under the effect of spring base 12, flashboard 6 moves downward, and the passage on flashboard 6 communicates with the linear runner of valve body 1, thus valve opening.After removing gas pressure, spring 13 resets, and the elastic force of spring 13 acts on piston 11, makes piston 11 reversely move, and piston 11 drives flashboard 6 to move upward under the cooperation of action bars 9 and valve rod 8 simultaneously, makes valve completely close.
This piston type relief valve is simple and compact for structure, and volume is little, lightweight, and stable drive is reliable, and the keying of flashboard facilitates rapidly, and stability and reliability during work are desirable.It is provided with steel ball 14 between attaching nut 10 and spring base 12 in this utility model, thus when compression spring 13, it is possible to reduce friction and assembling moment of torsion so that total is operationally relatively reliable stable.The top of the piston 11 in this utility model is connected to a push rod 17, and push rod 17 is provided with observation cover 18, thereby through observing cover 18, it can be seen that the action situation of push rod 17, and then can observe the switch conditions of this relief valve at any time.The filler assembly 15 being provided with between valve rod 8 and valve gap 2, it is ensured that sealing.Gland 16 above filler assembly 15 can limit the action bars 9 connected with piston 11 to be continued down to run, and action bars 9 is played positioning action.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.
Claims (6)
- null1. a piston type relief valve，It is characterized in that: include valve body、Valve gap、Cylinder body and housing，The middle part of described valve body is provided with two valve seats，The centre of two valve seats is provided with longitudinally movable flashboard，The upper end of valve body is connected with valve gap，Valve gap is provided with a underbeam，Described housing is arranged on described underbeam，Described cylinder body is installed on the housing，The top of described flashboard is connected with a valve rod，This valve rod described valve gap of traverse，And be arranged in described housing，The upper end of valve rod is connected with an action bars，The upper end of this action bars is provided with an attaching nut，A piston it is provided with in described cylinder body，This piston be connected with a spring base，Described attaching nut is arranged in this spring base，And it is provided with steel ball between this attaching nut and spring base，It is provided with spring between described spring base and underbeam，It is provided with filler assembly between described valve rod and valve gap，This filler assembly is arranged over gland，The top of described piston is connected to a push rod，Described push rod is provided with observation cover.
- 2. piston type relief valve according to claim 1, it is characterised in that: it is provided with O between medial wall and the described piston of described cylinder body.
- 3. piston type relief valve according to claim 1, it is characterised in that: the upper end of described cylinder body is provided with upper cylinder cover, and this upper cylinder cover is provided with overflow valve.
- 4. piston type relief valve according to claim 1, it is characterised in that: described valve gap is provided with oil syringe.
- 5. piston type relief valve according to claim 1, it is characterised in that: left end and the right-hand member of described valve body are equipped with flange arrangement.
- 6. piston type relief valve according to claim 1, it is characterised in that: it is provided with metallic packing ring between described valve body and valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620165802.2U CN205401774U (en) | 2016-03-04 | 2016-03-04 | Piston type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620165802.2U CN205401774U (en) | 2016-03-04 | 2016-03-04 | Piston type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401774U true CN205401774U (en) | 2016-07-27 |
Family
ID=56444795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620165802.2U Active CN205401774U (en) | 2016-03-04 | 2016-03-04 | Piston type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116771304A (en) * | 2023-06-27 | 2023-09-19 | 盐城瑞德石化机械有限公司 | Wellhead safety valve and hydraulic control system of safety valve |
-
2016
- 2016-03-04 CN CN201620165802.2U patent/CN205401774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116771304A (en) * | 2023-06-27 | 2023-09-19 | 盐城瑞德石化机械有限公司 | Wellhead safety valve and hydraulic control system of safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230310 Address after: No. 16, Xihenggang Street, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Dawson Drilling and Production Equipment Co.,Ltd. Address before: 215137 Xingtai Road, Taiping Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU DOUSON DRILLING & PRODUCTION EQUIPMENT Co.,Ltd. |