CN2432332Y - Throttling type natural gas well outward transmission pipeline safety device - Google Patents
Throttling type natural gas well outward transmission pipeline safety device Download PDFInfo
- Publication number
- CN2432332Y CN2432332Y CN 00237282 CN00237282U CN2432332Y CN 2432332 Y CN2432332 Y CN 2432332Y CN 00237282 CN00237282 CN 00237282 CN 00237282 U CN00237282 U CN 00237282U CN 2432332 Y CN2432332 Y CN 2432332Y
- Authority
- CN
- China
- Prior art keywords
- natural gas
- safety device
- gas well
- spool
- purpose station
- Prior art date
- 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
Links
- 239000002343 natural gas well Substances 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000009172 bursting Effects 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 28
- 239000003345 natural gas Substances 0.000 description 14
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Images
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model relates to a throttling type safety device of outward transmission pipelines of natural gas wells used for automatically shut-off the natural gas wells at bursting accidents of the outward transmission pipelines. The utility model is composed of a right-angle tee casing (1), a cylinder-shaped valve core (6), throttle plates (8), a triplet sealing ring (9), a return spring (10), an inner sleeve (12), an end plug (2), etc., (see figures). The throttle plates and the triplet sealing ring are arranged in the cylinder-shaped valve core (6) which is seated on the return spring (10). The cylinder-shaped valve core can be taken out by unlinking the end plug (2) to replace the throttle plates of different hole diameters in order to be used for gas wells of different output. The utility model can be arranged between the well head of gas production wells and an outward transmission pressure reducing valve in a needle shape.
Description
The utility model relates under the situation that a kind of petroleum and natural gas well multi-purpose station pipeline breaks, and closes the safety device of source of the gas automatically.
The pressure of natural gas well multi-purpose station pipeline generally between 5～50Mpa, in the long-term production process because break accident might take place in various factors, the environment pollution that is caused or set off an explosion and fire disaster thus, consequence is extremely serious.The particularly long-distance transport pipes and the unattended natural gas well, pipeline breaking takes place in the dawn, will be difficult to timely processing, and then cast great misfortune.Therefore, abroad by the form regulation of environmental protection and industry security rules, all offshore oil and gas fields must be installed the downhole closing safety device.According to the actual conditions of China's natural gas well, the technical difficulty of downhole safety device is big, domestic production as yet.The existing series of products of external high pressure oil wells downhole safety device are as the Bake of the U.S.. and Hughes Electronics, all there are production marketing in the Ha Musha company and the former Soviet Union.But being installed on natural gas well well head can close the safety device of multi-purpose station pipeline automatically and then not see report as yet.The patent of domestic existing this respect.Fig. 1 is that a kind of that Chinese patent ZL98203777.5 provides can close the safety device that outer defeated natural gas line breaks automatically.Among Fig. 1, the 1-shell; The 2-core body; The 3-valve body; The 4-sliding sleeve; The 5-spring; 6-controls orifice plate; The 7-sealing ring; The 8-alignment pin; The 9-lining.After its principle was pipeline breaking, the control orifice plate promoted the mushroom valve body and combines and closing passage with the female coupling tap body under differential pressure action.
Fig. 2 is that Chinese patent ZL98203777.5 closes the schematic diagram that the gas transmission line safety device is installed in the natural gas well head automatically.Among Fig. 2, control shell 1, one end links to each other with natural gas port well high pressure sluice valve 4, and the other end links to each other with the special three-way 2 that aims at the taking-up core body, and plug 3 is housed in the threeway 2.Patent ZL98203777.5 structurally exists following defective: 1. among Fig. 1 spring 5 is installed in the outside of sliding sleeve 4, it is long-pending to have limited overflow section greatly, at big (200,000 m for example of output
3/ sky) can't use on the natural gas multi-purpose station pipeline; On overall structure, not only need to install the control shell, and need special three-way is installed, changed the layout of raw natural gas well shaft collar, increased the reconstruction expense of old well.
2. when the control orifice plate 6 that will change among Fig. 1, need dismantle the plug 3 among Fig. 2, through threeway 2, could take out with special tool.Complicated operation, very inconvenience.
3. the mushroom valve body 3 among Fig. 1 is easy to generate leakage when being applied to high-pressure natural gas.
At the problems referred to above, technical solution of the present utility model is:
1. structure of the present utility model can replace the threeway that natural gas well well head just had originally.Fig. 3 is the schematic diagram that throttle type natural gas multi-purpose station pipeline safety device is installed in the natural gas well head.Among Fig. 3, the 1st, throttle type natural gas multi-purpose station pipeline safety device, the 2nd, plug, the 3rd, well head high pressure sluice valve.Thereby the utility model can be installed on the threeway position of existing natural gas well head device easily, replaces the effect of former threeway, so need not the raw natural gas well head is done any reconstruction.
2. 2 bottoms of the plug among Fig. 3 directly connect mutually with the utility model control section, and when needing to change restricting orifice, drawing off plug can take out simultaneously.Avoid the use special tool, made things convenient for operation.
3. the utility model has adopted sleeve valve and three ring structures.Because three sealing ring intensity are big, can avoid natural gas flow opening or closing the guiding valve seal problem that blown off and tear at that moment.Thereby solved the leakage phenomenon of mushroom shut off valve under the high-pressure natural gas effect.Because back-moving spring is placed in the sleeve valve bottom, thereby has increased the natural gas flow channels greatly, also can be suitable for the large-tonnage natural gas well.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 4 is the sectional drawing according to the defeated pipe safety device in the throttle type natural gas well place that the utility model proposes.
Describe details and operating principle in detail below in conjunction with Fig. 4 according to the device that the utility model proposes.
This device comprises special right-angle tee shell (1), plug (2), sealing ring (3), disengagement bolts (4), connecting joint (5), column type spool (6), pressure cap (7), restricting orifice (8), three sealing rings (9), back-moving spring (10), O RunddichtringO (11) and interior cover (12) composition.Plug has screw thread on (2), with the thread connection of special right-angle tee shell (1), and by O RunddichtringO (3), the leakage of sealed high pressure natural gas.Three uniform disengagement bolts (4) are arranged on the plug (2), and its end globulate cooperates with arc groove on the connecting joint (5).Screw thread on the connecting joint (5) is connected with interior cover (12) internal thread, thereby when plug is dismantled, rotates in the arc groove of disengagement bolts (4) on connecting joint, produces to move axially simultaneously interior cover (12) is extracted, so that change the restricting orifice of different size.Column type spool (6) top has pressure cap (7) that restricting orifice is pacified into wherein.Have two groups of interconnections on the column type spool, the existing one section spool in bottom of three sealing rings (9), column type spool (6) and the endoporus of interior cover (12) are installed between the passage are slidingly matched, column type spool (6) seat is bottom having on the back-moving spring of pre compressed magnitude (10).O RunddichtringO (11) has cut off the mutual string of air inlet with outer gas transmission.
This device course of work is described below: press arrow in Fig. 4 when this device when natural gas by well head, selected correct aperture as restricting orifice by normal discharge, owing to pressure drop is very little, then cylindrical spool (6) moves down very for a short time, can keep gas circuit unimpeded.Break or disconnected taking off as multi-purpose station pipeline, output end pressure is reduced near atmospheric pressure, and by the still very big (5Mpa～50Mpa) of the gas pressure that enters this device in the well, the flow of natural gas increases suddenly under big pressure reduction, thereby heighten by the pressure drop of restricting orifice (8), it is downward that the pressure reduction that this pressure drop produces will promote column type spool (6), behind the compression reseting spring, its underpart interconnection and three sealing rings are entered in the cylinder of interior cover (12), closing the natural gas passage, thereby the pipeline breaking accident is controlled fully.After Fig. 5 was natural gas multi-purpose station pipeline generation break accident, throttle type natural gas well multi-purpose station pipeline safety device cut out the structural representation behind the source of the gas automatically.Among Fig. 5, cylinder slide core (6) moves down, and three sealing rings have entered in the cylinder of interior cover (12), have closed the path of gas source and multi-purpose station pipeline.
When this device resets, can column type spool bottom feed with well in behind the gas of uniform pressure, balance up and down pushes away the column type spool on the back-moving spring (10) and resets.
Claims (5)
1. can close the break throttle type natural gas well multi-purpose station pipeline safety device of contingency of natural gas well multi-purpose station pipeline automatically, a special right-angle tee shell (1) is arranged, column type spool (6) is installed in it, it is characterized in that having on the column type spool two horizontal rows to passage, three sealing rings (9) are installed between the passage, the short cylindrical and interior cover (12) the endoporus sliding fit of spool bottom, the spool bottom supporting is on back-moving spring (10), by pressure cap (7) restricting orifice (8) is housed in the column type spool, disengagement bolts (4) on the plug (2) is packed in the connecting joint (5), and connecting joint (5) and interior cover (12) are mutually in succession.
2. according to right 1 described throttle type natural gas well multi-purpose station pipeline safety device, it is characterized in that adopting three sealing rings (9) to carry out the circular radial column sealing.
3. according to right 1 described throttle type natural gas well multi-purpose station pipeline safety device, it is characterized in that cylindrical spool (6) bottom has a short cylinder and interior cover (12) endoporus to be slidingly matched.
4. according to right 1 described throttle type natural gas well multi-purpose station pipeline safety device, it is characterized in that the disengagement bolts (4) on the plug (2), be contained in the arc groove on the connecting joint (5).
5. according to right 1 described throttle type natural gas well multi-purpose station pipeline safety device, it is characterized in that back-moving spring (10) is installed in the lower end of column type spool (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237282 CN2432332Y (en) | 2000-06-15 | 2000-06-15 | Throttling type natural gas well outward transmission pipeline safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237282 CN2432332Y (en) | 2000-06-15 | 2000-06-15 | Throttling type natural gas well outward transmission pipeline safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2432332Y true CN2432332Y (en) | 2001-05-30 |
Family
ID=33598595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00237282 Expired - Lifetime CN2432332Y (en) | 2000-06-15 | 2000-06-15 | Throttling type natural gas well outward transmission pipeline safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2432332Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018802A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Durable protecting device |
| CN112145125A (en) * | 2020-09-30 | 2020-12-29 | 陕西百豪科技发展有限责任公司 | Natural gas well four-in-one remote intelligent production and safety control equipment |
-
2000
- 2000-06-15 CN CN 00237282 patent/CN2432332Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018802A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Durable protecting device |
| CN112145125A (en) * | 2020-09-30 | 2020-12-29 | 陕西百豪科技发展有限责任公司 | Natural gas well four-in-one remote intelligent production and safety control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI AN DONGXIN OIL EQUIPMENT FACTORY Free format text: FORMER OWNER: GONG WEIAN Effective date: 20051021 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20051021 Address after: 710600 green industrial park, Lintong Economic Development Zone, Shaanxi, Xi'an Patentee after: Dongxin Petroleum Equipment Factory, Xi'an Address before: 2 unit 14, 1 District, Changqing District, Changqing, Shaanxi, Xi'an 710021, China 301 Patentee before: Gong Weian |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010530 |