CN102174986A - Wellhead connecting device of underground gas storage well - Google Patents
Wellhead connecting device of underground gas storage well Download PDFInfo
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- CN102174986A CN102174986A CN 201110050530 CN201110050530A CN102174986A CN 102174986 A CN102174986 A CN 102174986A CN 201110050530 CN201110050530 CN 201110050530 CN 201110050530 A CN201110050530 A CN 201110050530A CN 102174986 A CN102174986 A CN 102174986A
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- sealing head
- coupling arrangement
- thread
- fuel gas
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Abstract
The invention discloses a wellhead connecting device of a high-pressure underground gas storage well. The device comprises a cylindrical body, an integrated connecting seal head and a seal ring, wherein the lower part of the cylindrical body is provided with a taper pipe thread; the upper part of the cylindrical body is provided with a fastening thread or is provided with the fastening thread and a seal groove; and the integrated connecting seal head is provided with a liquid discharge port, a fuel gas inlet and a fuel gas outlet. According to the invention, a thickened cylindrical connecting pipe is adopted as the body of the connecting device and the integrated connecting seal head, during installation, the lower part of the cylindrical connecting pipe can be placed in a cement base under the ground surface, and is convenient for anti-corrosion treatment for the upper part, thus the connecting device has the characteristics of simple and compact structure, good integrity, safety and reliability in use, long service life and the like, is convenient to mount and dismount, is easy to perform heat preservation, heating and anti-corrosion treatment on the connecting device in daily use, and is convenient to overhaul and maintain the gas storage well.
Description
Technical field
The invention belongs to high pressure underground gas well well head coupling arrangement, particularly a kind of well head coupling arrangement that adopts the cylindrical shape connecting tube as device body.Adopt the both easy disassembly and wellhead assembly implemented insulation, heating and preservative treatment of this well head coupling arrangement, be convenient to again to gas storage well detect, maintenance etc.
Background technique
At present, in CNG (compressed natural gas) supply station and gas peak regulation station, the wellhead assembly that the device that connects as the high pressure underground gas well well head still generally adopts the flange plate of metal (steel) circle sealing to connect.The patent No. is that ZL2005200365219, denomination of invention promptly belong to this type of well head coupling arrangement for the disclosed technology of patent documentation of " coupling head of well for storage well head "; This coupling head (device) comprises that the bottom is provided with the flange of bolt hole and seal groove, and top is for being with the flange-type sealing head of liquid port and fuel gas inlet/outlet and seal groove, bolt hole, metal o-ring; Upper and lower two-part of coupling arrangement (body) use when installing then by pit shaft joint sleeve and the fastening one that is connected into of well head sealing by bolt group and metal o-ring and the fastening one that is connected into of upper and lower flange head sealed type.Such flange coupling arrangement is owing to have a structural mutation, generation stress to concentrate at flange plate and its neck, and in use variation repeatedly, the coupling arrangement because of pressure ruptures from this easily; And because this coupling arrangement bolt is many, the dismounting trouble, bolt also easily causes wellhead assembly to produce leakage because of fatigue is loosening, or because of the pretightening force of each bolt is difficult to the fracture that bolt takes place in equilibrium, the reliability that influences its sealing, and adopt the soft metal sealing also to be unfavorable for repeated disassembled and assembled; In addition because traditional connecting device structure complexity, regular (compactness) property is poor, be difficult for to coupling arrangement itself be incubated, heating and preservative treatment, also be not easy to gas storage well detect, defective such as maintenance.
Summary of the invention
The objective of the invention is at the existing defective of background technique, improve a kind of well for storage well head coupling arrangement of design; To simplify its structure and loading and unloading capacity, reliability in intensity, corrosion resistance, sealing and the using process of effective raising coupling arrangement, reach simple and compact for structure, easy to loading and unloading, in the daily use easily to coupling arrangement itself be incubated, heating and preservative treatment, safe and reliable and can effectively prolong its working life, and be convenient to gas storage well detect, purpose such as maintenance.
Solution of the present invention be connection (four-way) head that tradition is provided with liquid port and fuel gas inlet/outlet with bottom (close) end socket between adopt flange plate to connect, between two flange plate, adopt steel ring to seal, the coupling arrangement body that (close) end socket bottom employing taper pipe thread connects with the well for storage well head; Change into adopt the connecting tube of integrated type tubular as body and with the coupling head of original tape liquid port and fuel gas inlet/outlet change into not only as connect, but also as the connection sealing head that seals, this connects sealing head by screw thread and seal ring and tubular connecting tube top seal fastening connection of formula, and the bottom of tubular connecting tube (body) still connects with the well for storage well head by taper pipe thread.Promptly in the well head coupling arrangement, adopt a tubular connecting tube that thickens to adopt direct and fastening, the sealed attachment of gas storage well well head of taper pipe thread as the body of this coupling arrangement, the lower end of connecting tube, and can be placed in the concrete pedestal under the face of land, also be convenient to part more than the face of land is carried out preservative treatment, to improve the intensity and the antiseptic power of pit shaft and well head connecting tube point of attachment and coupling arrangement itself; The top of tubular connecting tube then adopts binding thread to cooperate fit sealing to connect with seal ring with the connection sealing head of band liquid port and fuel gas inlet/outlet; Thereby realize its goal of the invention.Thereby well head coupling arrangement of the present invention comprises the coupling arrangement body, is provided with the coupling head of liquid port and fuel gas inlet/outlet, sealing head, and seal ring; Key is that the coupling arrangement body is that the bottom is provided with the cylinder body that taper pipe thread, top are provided with binding thread or binding thread and seal groove, coupling head and sealing head then connect sealing head for the integrated type that is provided with liquid port and fuel gas inlet/outlet, on the connection sealing head, be provided with binding thread and seal groove or binding thread only is set, liquid port on this connection sealing head and fuel gas inlet/outlet all axially are located at the top that connects sealing head, and seal ring then is located at and is connected between sealing head and the cylinder body; Connect sealing head and cylinder body top and be connected into one by binding thread and seal ring fit sealing.Thereby form well head coupling arrangement of the present invention.
The thick 20-30mm of the barrel of above-mentioned cylinder body, axial high 5-12m, top is metric thread or (directly) pipe thread with the binding thread that the connection sealing head cooperates.The described connection sealing head that is provided with liquid port and fuel gas inlet/outlet is that plug (built-in) formula connects sealing head or the pressure cap formula connects sealing head; Connect the sealing head top axle to a liquid port and 1-3 fuel gas inlet/outlet are set, connect sealing head top and also be provided with square head or the hexagon head that is used to load and unload.And described cylinder body and connect sealing head when coupling arrangement adopts plug (built-in) formula to connect sealing head, is provided with binding thread and seal groove and binding thread only is set on the inner ring surface on cylinder body top on the outer cylinder that connects sealing head; When coupling arrangement adopts the pressure cap formula to connect sealing head, on the inner ring surface that connects sealing head, only binding thread is set and binding thread and seal groove are set on the outer cylinder on cylinder body top.
The present invention is owing to adopt the tubular connecting tube that thickens to adopt direct and fastening, the sealed attachment of gas storage well well head of taper pipe thread as the body of this coupling arrangement, the lower end of connecting tube, tubular connecting tube bottom can be placed in the concrete pedestal under the face of land when mounted, top also is convenient to preservative treatment, to improve the intensity and the antiseptic power of pit shaft and well head connecting tube point of attachment; The top of connecting tube then adopts screw thread to cooperate fit sealing to connect with seal ring with the connection sealing head of band liquid port and fuel gas inlet/outlet.Thereby have simple and compact for structure, good integrity, easy to loading and unloading, in the daily use easily to coupling arrangement itself be incubated, heating and preservative treatment, safe and reliable and long service life, and be convenient to gas storage well detect, characteristics such as maintenance.
Description of drawings
Fig. 1 is structure of the present invention and embodiment's 1 schematic representation;
Fig. 2 is the embodiment of the invention 2 structural representations.
Among the figure: 1. cylinder body 2. connects sealing head, 2-1. fuel gas inlet/outlet, 2-2. liquid port, 3. seal ring; 4. well head backing plate, 5. top layer conduit, 6. pit shaft body.
Embodiment
With with CNG gas station and hot gas peak regulation station, cities and towns, the gas distribution station gas storage well is supporting is example with the well head coupling arrangement: pit shaft body 6 diameter of phi 244.5mm (9
5/
8" pipe), gas storage pressure is 25Mpa.
Embodiment 1: connecting sealing head with plug (built-in) formula is example, cylinder body 1 axial long 8m, internal diameter Φ 230mm, external diameter Φ 270mm, top is M240 * 3, axial long 60mm with connecting screw thread that sealing head 2 cooperates, and the lower taper pipe thread is identical with the taper pipe threads of the supporting usefulness of pit shaft body 6 routines joint sleeves; Connect sealing head 2 axial long 165mm, screw thread is M240 * 3 screw threads of axial long 70mm, connect sealing head lower outer diameter Φ 235mm, establishing for the 3 row ends on it directly is Φ 227mm, the seal groove of wide 6.5mm, connecting the sealing head top is the hexagon head that is used to load and unload, liquid port 2-2 and fuel gas on it advance, the equal direct-axis of outlet 2-1 is to setting, liquid port 2-2 is located on the axis, present embodiment and liquid port are symmetrical arranged 2 and had both can be used as suction port, the fuel gas that also can be used as outlet advances, outlet 2-1, liquid port and fuel gas advance, the structure of outlet, size is all same with background technique; Seal ring 3 models are " O " shape seal ring of Φ 235 * 5.0mm.All the other well head backing plates 4, top layer conduit 5 also all with conventional well cylindrical shell 6 diameter of phi 244.5mm (9
5/
8" pipe), gas storage pressure is that the well for storage of 25Mpa is identical.
Embodiment 2: it is example that embodiment connects sealing head with the pressure cap formula, the length of cylinder body 1, and inside and outside footpath all identical with embodiment 1, present embodiment on the external cylindrical surface of cylindrical shell top, establish the 3 row ends directly for the screw thread of the seal groove of Φ 242mm, wide 6.5mm and M260 * 4, thread spindle to long 80mm, the taper pipe thread on the external cylindrical surface of bottom is identical with taper pipe thread on pit shaft body 6 well heads, seal fastening connection by routine is supporting with the pit shaft joint sleeve during installation; On pressure cap formula connection sealing head 2 axial long 195mm, external diameter Φ 320mm, its inner ring surface the screw thread of thread spindle to M260 * 4 of long 70mm is set; Seal ring 3 models are " O " shape seal ring of Φ 250 * 5.0mm; Remaining part is all identical with embodiment 1.
Claims (4)
1. a well for storage well head coupling arrangement comprises the coupling arrangement body, is provided with the coupling head of liquid port and fuel gas inlet/outlet, sealing head, and seal ring; It is characterized in that the coupling arrangement body is that the bottom is provided with the cylinder body that taper pipe thread, top are provided with binding thread or binding thread and seal groove, coupling head and sealing head then connect sealing head for the integrated type that is provided with liquid port and fuel gas inlet/outlet, on the connection sealing head, be provided with binding thread and seal groove or binding thread only is set, liquid port on this connection sealing head and fuel gas inlet/outlet all axially are located at the top that connects sealing head, and seal ring then is located at and is connected between sealing head and the cylinder body; Connect sealing head and cylinder body top and be connected into one by binding thread and seal ring fit sealing.
2. by the described well for storage well head of claim 1 coupling arrangement, it is characterized in that the thick 20-30mm of barrel of described cylinder body, axial high 5-12m, top is metric thread or pipe thread with the binding thread that the connection sealing head cooperates.
3. by the described well for storage well head of claim 1 coupling arrangement, it is characterized in that the described connection sealing head that is provided with liquid port and fuel gas inlet/outlet connects sealing head for the plug formula or the pressure cap formula connects sealing head; Connect the sealing head top axle to a liquid port and 1-3 fuel gas inlet/outlet are set, connect sealing head top and also be provided with square head or the hexagon head that is used to load and unload.
4. by the described well for storage well head of claim 1 coupling arrangement, it is characterized in that described cylinder body and connect sealing head, when coupling arrangement adopts the plug formula to connect sealing head, binding thread and seal groove are set on the outer cylinder that connects sealing head and binding thread only is set on the inner ring surface on cylinder body top; When coupling arrangement adopts the pressure cap formula to connect sealing head, on the inner ring surface that connects sealing head, only binding thread is set and binding thread and seal groove are set on the outer cylinder on cylinder body top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050530 CN102174986A (en) | 2011-03-01 | 2011-03-01 | Wellhead connecting device of underground gas storage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110050530 CN102174986A (en) | 2011-03-01 | 2011-03-01 | Wellhead connecting device of underground gas storage well |
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| Publication Number | Publication Date |
|---|---|
| CN102174986A true CN102174986A (en) | 2011-09-07 |
Family
ID=44518201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110050530 Pending CN102174986A (en) | 2011-03-01 | 2011-03-01 | Wellhead connecting device of underground gas storage well |
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|---|---|
| CN (1) | CN102174986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502151A (en) * | 2011-11-23 | 2012-06-20 | 自贡市华气科技开发有限公司 | Multi-stage sealing adjustable full-bore type wellhead device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859163Y (en) * | 2005-12-16 | 2007-01-17 | 冉训 | Well mouth coupling head of underground gas-storage well |
| CN2883871Y (en) * | 2005-12-24 | 2007-03-28 | 自贡市华气科技开发有限公司 | Wellhead structure of gas storage well |
| CN201554414U (en) * | 2009-11-30 | 2010-08-18 | 泸州川油钻采工具有限公司 | High-performance gas storage wellhead |
| CN202007994U (en) * | 2011-03-01 | 2011-10-12 | 自贡力源科技有限公司 | Well mouth coupling head for underground gas storage well |
| CN202007992U (en) * | 2011-03-01 | 2011-10-12 | 自贡力源科技有限公司 | Wellhead linkage device of underground gas storage well |
-
2011
- 2011-03-01 CN CN 201110050530 patent/CN102174986A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859163Y (en) * | 2005-12-16 | 2007-01-17 | 冉训 | Well mouth coupling head of underground gas-storage well |
| CN2883871Y (en) * | 2005-12-24 | 2007-03-28 | 自贡市华气科技开发有限公司 | Wellhead structure of gas storage well |
| CN201554414U (en) * | 2009-11-30 | 2010-08-18 | 泸州川油钻采工具有限公司 | High-performance gas storage wellhead |
| CN202007994U (en) * | 2011-03-01 | 2011-10-12 | 自贡力源科技有限公司 | Well mouth coupling head for underground gas storage well |
| CN202007992U (en) * | 2011-03-01 | 2011-10-12 | 自贡力源科技有限公司 | Wellhead linkage device of underground gas storage well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502151A (en) * | 2011-11-23 | 2012-06-20 | 自贡市华气科技开发有限公司 | Multi-stage sealing adjustable full-bore type wellhead device |
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Application publication date: 20110907 |
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