CN202007996U - Wellhead linkage device of underground gas storage well - Google Patents
Wellhead linkage device of underground gas storage well Download PDFInfo
- Publication number
- CN202007996U CN202007996U CN2011200533629U CN201120053362U CN202007996U CN 202007996 U CN202007996 U CN 202007996U CN 2011200533629 U CN2011200533629 U CN 2011200533629U CN 201120053362 U CN201120053362 U CN 201120053362U CN 202007996 U CN202007996 U CN 202007996U
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- pipe
- head
- outlet
- coupling
- storage well
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Abstract
The utility model discloses a wellhead linkage device of a high-pressure underground gas storage well. The wellhead linkage device comprises a cylinder-shaped seal pipe, a screw cap type coupling head and a seal ring, wherein conical pipe threads is arranged at the lower part of the pipe body, fastening threads is arranged at the upper part of the pipe body, and a sealing groove is arranged on the upper end surface of the pipe body; the screw cap type coupling head is provided with a liquid outlet and fuel gas inlet and outlet. As a thickened cylindrical connecting pipe is adopted to serve as the seal pipe of the linkage device, the lower end of the seal pipe is fastened and hermetically connected with a wellhead of the gas storage well directly through adopting the conical pipe threads, and the upper part of the seal pipe and the screw cap type coupling head with the liquid outlet and the fuel gas inlet and outlet are fastened and hermetically connected with the seal ring through the threads in a matched manner, the lower part of the seal pipe is placed in a cement foundation during use, and preservative treatment to the upper part can be carried out conveniently; therefore, the device has the characteristics of simple and compact structure, good integrity, convenience for assembly and disassembly, simplicity in heat preservation, heating and preservative treatment for the leakage device in daily use, safety and reliability in use, long service life, conveniences for detection and maintenance of the gas storage well, and the like.
Description
Technical field
The utility model belongs to high pressure underground gas well well head coupling arrangement, and particularly a kind of employing cylindrical shape sealed pipe (head) directly passes through the well head coupling arrangement of screw threads for fastening sealed attachment with pit shaft upper oral part and coupling head.Adopt this to install both easy disassembly and wellhead assembly implemented insulation, heating and preservative treatment, 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 purpose of this utility model is at the existing defective of background technique, improves 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 utility model changes the flanged dish in bottom (close) end socket into cylindrical shape sealed pipe (head); The employing flange plate connects between connection (four-way) head that simultaneously tradition is provided with liquid port and fuel gas inlet/outlet and bottom (close) end socket, between two flange plate, adopt the steel ring sealing, change into and adopt the direct connection of screw thread between the two and do end face seal by seal ring (ring), the bottom of cylindrical shape sealed pipe still connects with the well for storage well head by taper pipe thread.Promptly in the well head coupling arrangement, adopt the sealed pipe of a cylindrical shape body that thickens as this coupling arrangement, the lower end of cylindrical shape sealed pipe still adopts taper pipe thread to connect with gas storage well well head fit sealing, then adopt binding thread to cooperate the fit sealing connection with seal ring between the coupling head of the top of cylindrical shape sealed pipe and band liquid port and fuel gas inlet/outlet, and seal groove is located at the upper-end surface of tubular connecting tube; Be convenient to carry out preservative treatment to the coupling arrangement body and with the well head coupling part, the coupling arrangement body reaches and the intensity and the antiseptic power of well head point of attachment to improve; The utility model is promptly realized its goal of the invention with this.Thereby the utility model well head coupling arrangement comprises the coupling head that is provided with liquid port and fuel gas inlet/outlet and the coupling arrangement body of sealing head, seal ring; Key is that coupling head is the coupling head of nut formula, liquid port and fuel gas inlet/outlet all axially are located at the top of this coupling head, sealing head then is the cylindrical shape sealed pipe, and the body bottom of cylindrical shape sealed pipe is provided with that taper pipe thread, body top are provided with binding thread, the body upper-end surface is provided with seal groove; Seal ring is located in the seal groove, is connected into one by screw thread and seal ring fit sealing between coupling head of nut formula and the cylindrical shape sealed pipe.Thereby form well head coupling arrangement described in the utility model.
The thick 20-30mm of the barrel of above-mentioned cylindrical shape sealed pipe, axial high 300-10000mm, the screw thread that sealed pipe top cooperates with the coupling head of nut formula is metric thread or (directly) pipe thread, and the seal groove annular is located at medium position or the outer fix or the inner side of sealed pipe upper-end surface.The top axle of the described nut formula coupling head that is provided with liquid port and fuel gas inlet/outlet is to a liquid port and 1-4 fuel gas inlet/outlet are set.
The utility model is owing to adopt the cylindrical shape body that thickens to adopt direct and fastening, the sealed attachment of gas storage well well head of taper pipe thread as the sealed pipe (head) of this coupling arrangement, the lower end of sealed pipe, 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 sealed pipe point of attachment; The top of sealed pipe adopts screw thread to cooperate fit sealing to connect with seal ring with the coupling head of band liquid port and fuel gas inlet/outlet.The utlity model has 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 the utility model structure and embodiment's 1 schematic representation;
Fig. 2 is the utility model embodiment 2 structural representations.
Among the figure: 1. cylindrical shape sealed pipe, 2. nut formula coupling 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 CNG gas station and hot gas peak regulation station, cities and towns, gas distribution station gas storage well is example: and pit shaft body 6 diameter of phi 244.5mm (95/8 " pipe), gas storage pressure is 25Mpa.
Embodiment 1: present embodiment cylindrical shape sealed pipe 1 axial long 8000mm, internal diameter Φ 215mm, external diameter Φ 267mm, the screw thread that top cooperates with nut formula coupling head 2 is M260 * 4, axial long 80mm, the inside and outside footpath of being located at middle part, sealed pipe upper-end surface seal groove is respectively Φ 242mm and Φ 229mm, groove depth 4mm, and sealed pipe lower taper pipe thread is identical with pit shaft body 6 conventional supporting taper pipe threads with joint sleeve; Nut formula coupling head 2 axial long 142mm, lower outer diameter Φ 320mm, inner ring surface is 80mm deeply axially, screw thread is M260 * 4 screw threads of axial long 70mm on it, hexagon head, liquid port 2-2 and the equal direct-axis of fuel gas inlet/outlet 2-1 that an axial long 30mm is used to load and unload are established to setting in the top, liquid port is located on the axis, present embodiment and liquid port are symmetrical arranged 2 and had both can be used as suction port, also can be used as the fuel gas inlet/outlet 2-1 of outlet, its structure, size all with background technique with; Seal ring 3 models are " O " shape seal ring of Φ 240 * 5.0mm.All the other well head backing plates 4, top layer conduit 5 are that the well for storage of 25Mpa is identical with conventional well cylindrical shell 6 diameter of phi 244.5mm (95/8 " pipe), gas storage pressure all also.
The lower end of present embodiment cylindrical shape sealed pipe 1 adopts taper pipe thread directly to connect with gas storage well well head fit sealing, is placed in the concrete pedestal under the face of land, can effectively improves pit shaft and well head connecting tube point of attachment intensity and antiseptic power.
Embodiment 2: present embodiment cylindrical shape sealed pipe 1 axial long 300mm, internal diameter Φ 216mm, external diameter Φ 270mm, present embodiment is located at seal groove in the outside of upper-end surface, the seal groove external diameter is identical with cylindrical shape sealed pipe external diameter, also be Φ 270mm, internal diameter Φ 240mm, groove depth 4mm; Seal ring 3 models are " O " shape seal ring of Φ 250 * 5.0mm; Remaining part is all identical with embodiment 1.
Claims (3)
1. well for storage well head coupling arrangement comprises the coupling head that is provided with liquid port and fuel gas inlet/outlet and the coupling arrangement body of sealing head, seal ring; It is characterized in that coupling head is the coupling head of nut formula, liquid port and fuel gas inlet/outlet all axially are located at the top of this coupling head, sealing head then is the cylindrical shape sealed pipe, and the body bottom of cylindrical shape sealed pipe is provided with that taper pipe thread, body top are provided with binding thread, the body upper-end surface is provided with seal groove; Seal ring is located in the seal groove, is connected into one by screw thread and seal ring fit sealing between coupling head of nut formula and the cylindrical shape sealed pipe.
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 300-10000mm, the screw thread that sealed pipe top cooperates with the coupling head of nut formula is metric thread or pipe thread, and the seal groove annular is located at medium position or the outer fix or the inner side of sealed pipe upper-end surface.。
3. by the described well for storage well head of claim 1 coupling arrangement, the top axle that it is characterized in that the described nut formula coupling head that is provided with liquid port and fuel gas inlet/outlet is to a liquid port and 1-4 fuel gas inlet/outlet are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200533629U CN202007996U (en) | 2011-03-01 | 2011-03-01 | Wellhead linkage device of underground gas storage well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200533629U CN202007996U (en) | 2011-03-01 | 2011-03-01 | Wellhead linkage device of underground gas storage well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007996U true CN202007996U (en) | 2011-10-12 |
Family
ID=44749654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200533629U Expired - Fee Related CN202007996U (en) | 2011-03-01 | 2011-03-01 | Wellhead linkage device of underground gas storage well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007996U (en) |
-
2011
- 2011-03-01 CN CN2011200533629U patent/CN202007996U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20170301 |