CN202417385U - Flexible sealing device for wellhead of underground gas storage well - Google Patents
Flexible sealing device for wellhead of underground gas storage well Download PDFInfo
- Publication number
- CN202417385U CN202417385U CN2011205636513U CN201120563651U CN202417385U CN 202417385 U CN202417385 U CN 202417385U CN 2011205636513 U CN2011205636513 U CN 2011205636513U CN 201120563651 U CN201120563651 U CN 201120563651U CN 202417385 U CN202417385 U CN 202417385U
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- China
- Prior art keywords
- lower flange
- flange
- storage well
- gas storage
- well
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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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Abstract
The utility model discloses a flexible sealing device for a wellhead of an underground gas storage well. The flexible sealing device comprises an upper sealing head body, an upper flange and a lower flange; a thread is tapped on the lower connecting inner wall of the lower flange; an annular groove is arranged on the upper end surface of the lower flange, and a sealing ring is arranged in the groove; the upper flange is arranged on the body of the upper sealing head body; the edge part of the lower port of the upper sealing head body is pushed against and connected with the upper end surface of the lower flange; the annular groove is arranged in the pushing contact surface; the upper flange and the lower flange are connected and fixed through a stud bolt; the upper sealing head body is clamped between the upper flange and the lower flange; and the flexible sealing device has the characteristics of effectively increasing the leak tightness of a wellhead device and the gas tightness of the gas storage well, preventing high pressure gas from leaking in the storage process, leading the gas storage to be safer and more reliable, prolonging the service life of the gas storage well and the like; and simultaneously the flexible sealing device is convenient to install, maintain and inspect and provides an essential condition for the periodical inspection of the gas storage well.
Description
Technical field
The utility model relates to natural gas storaging and transport technology field, especially relates to a kind of well for storage well head flexible seal device.
Background technology
The patent No. is ZL962241792, and name is called in the patent documentation of " well for storage of high pressure gas ", discloses a kind of wellhead assembly of gas storage well; This device is that wellhead assembly is connected with the box cupling internal thread through external screw thread, though structure is simple, because the box cupling long term exposure that links to each other with wellhead assembly is in external environment; Corrosion rate is accelerated, and influences the safety of the operation of gas storage well, on the other hand; Existing gas storage well wellhead assembly adopts the steel ring sealing to the sealing of fuel gas more; In order to guarantee flange seal property, need apply big pretightning force to bolt, seal with the mode of hard sealing; Adopt this structure high, increased technical difficulty and cost input steel ring, seal groove requirement on machining accuracy.
The utility model content
The purpose of the utility model is to provide a kind of flexible sealing that adopts to prevent high pressure gas leakage, makes the more safe and reliable well for storage well head flexible seal device of operation of gas storage well.
In order to achieve the above object, the utility model is realized through following technical scheme: the utility model provides a kind of well for storage well head flexible seal device, comprises upper cover body, upper flange and lower flange; Described lower flange bottom connects inwall and has attacked screw thread; The upper surface has cannelure, is placed with sealing ring in the groove, and wherein upper flange is contained on the upper cover body body; Described upper cover body lower port edge part and lower flange upper surface apical grafting; And cannelure is positioned at the apical grafting contact surface, and upper flange then is connected through stud with lower flange to be fixed, and the upper cover body is installed between the upper and lower flange.The mode that this device utilizes lower flange internal thread and sleeve pipe external screw thread to be threaded mutually, internal thread place, lower flange lower end wall thickness thickening has simultaneously prolonged application life, and then has ensured the safety and the economy of gas storage well more; Adopt the flexible sealing mode to improve the tightness of gas storage well wellhead assembly, effectively prevent the leakage of high-pressure fuel gas in storage process.
As optimization, the part wall thickness thickening of described lower flange internal thread place, at least 2 times of its sizes to ensure the safety and the economy of gas storage well, prolong its application life to common box cupling gauge.
As optimization, described cannelure is an arc-shaped slot, cooperates closelyr with sealing ring, helps improving sealing effectiveness.
As optimization, described sealing ring is selected viton seal ring for use, draws materials conveniently long service life.
Compared with prior art; The beneficial effect of the utility model is: gas storage well is exposed at above ground portion carried out the thickening processing, simultaneously flexible sealing has been replaced hard sealing, improved sealing mechanism; Can effectively improve the sealing of wellhead assembly and the tightness of gas storage well thereby have; Prevent the leakage of gases at high pressure in storage process, make the gas storage safety and reliability, characteristics such as gas storage well longer service life; Be convenient to installation, maintenance, prison inspection simultaneously, necessary condition be provided the periodic inspection of gas storage well.
Description of drawings
The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the utility model structure half sectional view;
Fig. 2 is the local enlarged diagram of I portion among Fig. 1.
Mark among the figure: upper cover body 1, upper flange 2, lower flange 3, cannelure 4, sealing ring 5, stud 6, well head backing plate 7, sleeve pipe 8, surface pipe 9.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Shown in Fig. 1 and Fig. 2, a kind of well for storage well head flexible seal device comprises upper cover body 1, upper flange 2 and lower flange 3; Described lower flange 3 bottoms connect inwall and have attacked screw thread, and the upper surface has cannelure 4, can cannelure 4 notch design be become circular-arc; Make to cooperate closelyr with sealing ring 5,, in groove, be placed with sealing ring 5 to improve sealing effectiveness; Usually select viton seal ring for use, it is convenient economical to draw materials, and long service life.Upper flange 2 is contained on upper cover body 1 body; With the upper surface of body lower port edge part apical grafting mutually; And the lower port edge part of body and lower flange 3 upper surface apical graftings; 4 of lower flange 3 upper surface cannelures are positioned at the contact surface of lower flange 3 and upper cover body 1 apical grafting, through stud 6 upper flange 2 are connected with lower flange 3 and fix, and upper cover body 1 is installed between the upper and lower flange 3.
When using this device; Only need lower flange 3 be threaded with sleeve pipe 8 upper ends on being fixed on well head backing plate 7; And backing plate 7 has been fixedly connected with surface pipe 9, and lower flange 3 and sleeve pipe are screwed, and lower flange 3 end of thread wall thickness of thickening are at least the twice of common box cupling wall thickness; Can slow down the corrosion rate that exposes wellhead assembly outside to the open air, prolong the application life of gas storage well.Through tightening the stud 6 that connects upper and lower flange 3; Make wellhead assembly and pit shaft connect into an integral body on the one hand, on the other hand, tighten stud 6 and can upper cover body 1 be pressed on the upper surface of lower flange 3 through upper flange 2 apical grafting effects; Sealing ring 5 elastic recovery under the external pressure effect in the cannelure 4; Form flexible sealing with 1 mouthful of end of upper cover body, effectively prevent the leakage of high-pressure fuel gas in storage process, the safety that has improved well head.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. well for storage well head flexible seal device; It is characterized in that: comprise upper cover body (1), upper flange (2) and lower flange (3), described lower flange (3) bottom link inwall has been attacked screw thread, and the upper surface has cannelure (4); Be placed with sealing ring (5) in the groove; Wherein upper flange (2) is contained on upper cover body (1) body, described upper cover body (1) lower port edge part and lower flange (3) upper surface apical grafting, and cannelure (4) is positioned at the apical grafting contact surface; Described upper flange (2) is connected fixing with lower flange (3) through stud (6).
2. according to the said a kind of well for storage well head flexible seal device of claim 1, it is characterized in that: the part wall thickness thickening of described lower flange (3) internal thread place, at least 2 times of its sizes are to common box cupling gauge.
3. according to the said a kind of well for storage well head flexible seal device of claim 1, it is characterized in that: described cannelure (4) is an arc-shaped slot.
4. according to the said a kind of well for storage well head flexible seal device of claim 1, it is characterized in that: described sealing ring (5) is selected viton seal ring for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205636513U CN202417385U (en) | 2011-12-30 | 2011-12-30 | Flexible sealing device for wellhead of underground gas storage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205636513U CN202417385U (en) | 2011-12-30 | 2011-12-30 | Flexible sealing device for wellhead of underground gas storage well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417385U true CN202417385U (en) | 2012-09-05 |
Family
ID=46742158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205636513U Expired - Lifetime CN202417385U (en) | 2011-12-30 | 2011-12-30 | Flexible sealing device for wellhead of underground gas storage well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061919A (en) * | 2012-12-25 | 2013-04-24 | 北京航空航天大学 | Airtight testing device of solid-liquid rocket engine combustor |
-
2011
- 2011-12-30 CN CN2011205636513U patent/CN202417385U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061919A (en) * | 2012-12-25 | 2013-04-24 | 北京航空航天大学 | Airtight testing device of solid-liquid rocket engine combustor |
| CN103061919B (en) * | 2012-12-25 | 2014-10-29 | 北京航空航天大学 | Airtight testing device of solid-liquid rocket engine combustor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN CHUANYOU GAS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SICHUAN OIL AND NATURAL GAS SCIENTIFIC DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 643000 Sichuan city of Zigong Province East District Science and technology building, 8 floor main street south of Osmanthus Patentee after: SICHUAN OIL NATURAL GAS TECHNOLOGY CO., LTD. Address before: 643000 Sichuan city of Zigong Province East District Science and technology building, 8 floor main street south of Osmanthus Patentee before: Sichuan Oil and Natural Gas Scientific Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |