CN203627787U - Air-tight seal structure used for petroleum drilling equipment - Google Patents
Air-tight seal structure used for petroleum drilling equipment Download PDFInfo
- Publication number
- CN203627787U CN203627787U CN201320861115.0U CN201320861115U CN203627787U CN 203627787 U CN203627787 U CN 203627787U CN 201320861115 U CN201320861115 U CN 201320861115U CN 203627787 U CN203627787 U CN 203627787U
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- CN
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- Prior art keywords
- seal
- air
- framework
- spring
- bolt
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- 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
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- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 239000003208 petroleum Substances 0.000 title abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000003129 oil well Substances 0.000 claims description 11
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 241000269793 Cryothenia peninsulae Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an air-tight seal structure used for petroleum drilling equipment. The air-tight seal structure comprises a seal framework, an O-shaped seal ring, a lip-shaped seal ring, a bolt and a spring. The seal framework is provided with an end face seal groove, an axial seal groove and a bolt hole. The O-shaped seal ring is arranged in the end face seal groove of the seal framework, the lip-shaped seal ring is arranged in the axial seal groove, and the spring is fixed onto the seal framework through the bolt and the bolt hole. According to the air-tight seal structure, the flat spring is fixed onto the seal framework through the bolt, the end face primary air-tight seal effect is achieved through the pre-tightening force of the flat spring, the flat spring is made of high-temperature elastic alloy materials, and the flat spring can maintain the elastic effect under acid environment; the lip-shaped seal ring, instead of an O-shaped seal ring in the prior art, is used for axial sealing, so that the self-sealing effect is good and the air-tight seal effect under the low pressure can be guaranteed; a nickel plated phosphorus layer is adopted in the seal framework, so that the antirust effect is good and safety and reliability of air-tight seal are guaranteed.
Description
Technical field
The utility model relates to a kind of sealing configuration of oil drilling control apparatus, is specifically related to a kind of air-tight structure for oil-well drilling equipment.
Background technique
Sealing is the critical component of oil drilling control apparatus, predominant use is control well mouth pressure in the processes such as drilling well, well workover, formation testing, effectively prevent that gas blowout accident from occurring, realize safe construction, field of petroleum exploitation has related to gas extraction at present, and common mining apparatus Sealing cannot guarantee the effect of hermetic seal.Existing Sealing can reach good sealing effect in hydrostatics testing, but in the time carrying out hermetic seal, because the molecular gap of gas is larger than water, in the time of low pressure, often leaks, and often occurs continuous air bubbles in the time of low-pressure pressure retaining.
Summary of the invention
The purpose of this utility model is to provide a kind of air-tight structure for oil-well drilling equipment, and this air-tight structure, under low-pressure state, because end face seal provides pretightening force by flat spring, can reach good sealing effect; Axial seal adopts lip-type packing, and self-styled performance is good, can guarantee the hermetic seal effect in low pressure situation, improve the gas tightness of equipment, guaranteed the safe and reliable of natural gas extraction equipment, simultaneously, the advantages such as this air-tight structure has simple in structure, easy for installation.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
For an air-tight structure for oil-well drilling equipment, be characterized in, this air-tight structure comprises: sealing framework, O RunddichtringO, lip-shaped sealed ring, bolt and spring.
Above-mentioned sealing framework is provided with end face seal groove, axial seal groove and bolt hole;
Above-mentioned O RunddichtringO is arranged in the end face seal groove of above-mentioned sealing framework, and above-mentioned lip-shaped sealed ring is arranged in above-mentioned axial seal groove, and above-mentioned spring is fixed on above-mentioned sealing framework by above-mentioned bolt, above-mentioned bolt hole.
The above-mentioned air-tight structure for oil-well drilling equipment, is characterized in, above-mentioned sealing framework 10 is coated with one deck nickel phosphorus layer.Above-mentioned spring adopts flat spring.
The utility model compared with prior art has the following advantages:
1. the utility model is fixed on flat spring on sealing framework by bolt, adopts the pretightening force of flat spring to reach the effect of end face initial gas sealing, and flat spring adopts high temperature elastic alloy material to make, and flat spring can keep elastic effect under sour environment.
2. axial seal of the present utility model adopts lip-type packing to replace O RunddichtringO of the prior art, self-styled functional, can guarantee the hermetic seal effect in low pressure situation.
3. sealing framework of the present utility model adopts nickel plating phosphorus layer, and rust-proof effect is good, has guaranteed the safe and reliable of hermetic seal.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of air-tight structure for oil-well drilling equipment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, a kind of air-tight structure for oil-well drilling equipment, this air-tight structure comprises: sealing framework 10, O RunddichtringO 20, lip-shaped sealed ring 30, bolt 40 and spring 50.Sealing skeleton 10 is provided with end face seal groove 11, axial seal groove 12 and bolt hole 13.Above-mentioned O RunddichtringO 20 is arranged in the end face seal groove 11 of sealing framework 10, and lip-shaped sealed ring 30 is arranged in axial seal groove 12, and spring 50 is fixed on sealing framework 10 by bolt 40, bolt hole 13.Above-mentioned sealing framework 10 is coated with one deck nickel phosphorus layer.
Above-mentioned spring 50 adopts flat spring, and flat spring has high elasticity, enough toughness and the feature of plasticity, also has simultaneously and has certain anti-leakage ability, the advantage such as shock-resistant ability is strong.
In the present embodiment, adopt high temperature elastic alloy material to make spring 50, make blowout preventer apparatus can keep good elastic effect under sour environment.
The working principle of the utility model in specific embodiment is as follows:
The end face of the side door 200 of blowout preventer apparatus is connected with the end face of housing 100, seal groove 210 is arranged in the side door 200 between side door 200 and housing 100, this air-tight structure for oil-well drilling equipment is packed into the seal groove 210 in the side door 200 of blowout preventer apparatus; O RunddichtringO 20 on sealing skeleton 10 fits tightly by end face seal groove 11 and housing 100, and lip-shaped sealed ring 30 fits tightly by axial seal groove 12 and side door 200, and the other end of spring 50 and seal groove 210 inwalls fit tightly.Blowout preventer apparatus is arranged on pithead.
In the time that the housing 100 of blowout preventer apparatus is subject to from mine internal pressure, lip-shaped sealed ring 30 plays the effect of axial hermetic seal, because lip-shaped sealed ring 30 has good selfsealings effect, makes can guarantee hermetic seal effect in the time of low pressure.
In the time that the side door 200 of blowout preventer apparatus is subject to from mine internal pressure, spring 50 is flat spring, in the time that spring 50 distortion produce pretightening force, push sealing framework 10 to end face, O RunddichtringO 20 in end face seal groove 11 can reach hermetic seal effect under low-pressure state, when after pressure rise, and pressure and spring 50 actings in conjunction, push sealing framework to end face, guaranteed Security and the reliability of hermetic seal.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple modification of the present utility model and substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (3)
1. for an air-tight structure for oil-well drilling equipment, it is characterized in that, this air-tight structure comprises: sealing framework (10), O RunddichtringO (20), lip-shaped sealed ring (30), bolt (40) and spring (50);
Described sealing framework (10) is provided with end face seal groove (11), axial seal groove (12) and bolt hole (13);
Described O RunddichtringO (20) is arranged in the end face seal groove (11) of described sealing framework (10), described lip-shaped sealed ring (30) is arranged in described axial seal groove (12), and described spring (50) is fixed on described sealing framework (10) by described bolt (40), described bolt hole (13).
2. the air-tight structure for oil-well drilling equipment as claimed in claim 1, is characterized in that, described sealing framework (10) is coated with one deck nickel phosphorus layer.
3. the air-tight structure for oil-well drilling equipment as claimed in claim 1, is characterized in that, described spring (50) adopts flat spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861115.0U CN203627787U (en) | 2013-12-25 | 2013-12-25 | Air-tight seal structure used for petroleum drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861115.0U CN203627787U (en) | 2013-12-25 | 2013-12-25 | Air-tight seal structure used for petroleum drilling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627787U true CN203627787U (en) | 2014-06-04 |
Family
ID=50814268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320861115.0U Expired - Lifetime CN203627787U (en) | 2013-12-25 | 2013-12-25 | Air-tight seal structure used for petroleum drilling equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504177A (en) * | 2017-08-04 | 2017-12-22 | 广汉川亿石油科技有限公司 | A kind of air-tight structure for oil-well drilling equipment |
| CN111043351A (en) * | 2019-11-27 | 2020-04-21 | 西安航天动力研究所 | Ultralow-temperature low-flow-resistance self-maintaining two-position three-way stop valve |
-
2013
- 2013-12-25 CN CN201320861115.0U patent/CN203627787U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504177A (en) * | 2017-08-04 | 2017-12-22 | 广汉川亿石油科技有限公司 | A kind of air-tight structure for oil-well drilling equipment |
| CN111043351A (en) * | 2019-11-27 | 2020-04-21 | 西安航天动力研究所 | Ultralow-temperature low-flow-resistance self-maintaining two-position three-way stop 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: 20140604 |