CN102877805A - Pressure-limiting device - Google Patents
Pressure-limiting device Download PDFInfo
- Publication number
- CN102877805A CN102877805A CN2011101965198A CN201110196519A CN102877805A CN 102877805 A CN102877805 A CN 102877805A CN 2011101965198 A CN2011101965198 A CN 2011101965198A CN 201110196519 A CN201110196519 A CN 201110196519A CN 102877805 A CN102877805 A CN 102877805A
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- hole
- pressure
- limiting device
- rupture disk
- passage
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Abstract
A pressure-limiting device comprises a casing and an on-off valve, wherein the on-off valve is arranged on the casing; a passage and a through hole are formed on the casing, the passage is convenient for liquid to circulate, and the through hole is communicated with the passage; the on-off valve is used for closing the through hole; and the on-off valve can be opened under a certain pressure of liquid in the passage so as to lead liquid in the passage to flow out through the through hole. When the pressure-limiting device is used, the on-off valve is opened when the pressure of material passing through the passage is higher than the loading capacity of the on-off valve, so that material in the casing can flow out through the through hole, the pressure is released outwards, and the damage on well drilling equipment caused by excessive pressure can be avoided.
Description
Technical field
The present invention relates to a kind of safety device, relate in particular to a kind of pressure limiting device of safety device.
Background technology
Drilling equipment by inject high-pressure slurry in drilling tool, carries out drilling well usually.Yet when bit freezing appearred in the down-hole, the mud pressure in the drilling tool will raise, and when mud pressure is elevated to a certain degree, can produces the member of drilling equipment and destroy.Therefore, be necessary to provide a kind of safety device that can protect drilling equipment.
Summary of the invention
In view of this, be necessary to provide a kind of pressure limiting device that can protect drilling equipment.
A kind of pressure limiting device, comprise housing and the switch valve that is arranged on the described housing, offer on the described housing fluid circulation passage and with the through hole of described channel connection, described switch valve is used for cutting out described through hole, open under the certain pressure of fluid that described switch valve can be in described passage, so that the fluid in the described passage flows out by described through hole.
Described switch valve comprises rupture disk, and described rupture disk is used for closing described through hole; When the pressure of the fluid in the described passage during greater than the bearing capacity of described rupture disk, described rupture disk breaks, and described through hole is opened.
Described switch valve also comprises fixture, and described fixture is fixed in described rupture disk on the described housing.
Described fixture is nut.
Offer the fixing hole that is connected with described through hole on the described housing, described rupture disk is arranged in the described fixing hole, and described fixture is fixed in the described fixing hole, is used for fixing described rupture disk.
Be raised with projection on the described housing, described fixing hole is opened on the described projection.
Above-mentioned pressure limiting device, when through the pressure of the material of passage during greater than the bearing capacity of switch valve, switch valve is opened, thereby so that the material in the housing flow out by through hole, thereby leak pressure, thereby avoid the destruction of the drilling equipment that causes because of hypertonia.
Description of drawings
Fig. 1 is the exploded view of a preferred embodiment pressure limiting device.
Fig. 2 is the generalized section of pressure limiting device among Fig. 1.
Fig. 3 is another visual angle stereogram of the housing of pressure limiting device among Fig. 1.
Fig. 4 is that the AA1 of the housing of pressure limiting device among Fig. 3 is to generalized section.
Fig. 5 is the V enlarged drawing of pressure limiting device among Fig. 2.
Specific embodiment
As depicted in figs. 1 and 2, be exploded view and the generalized section of a preferred embodiment pressure limiting device 10.Pressure limiting device 10 comprises housing 16 and is arranged at switch valve 17 on the housing 16.
See also Fig. 3 and Fig. 4, housing 16 comprises main body 161 and the projection 162 that is raised on main body 161 external surfaces.The fixing hole 169 that offers import 163, outlet 164, connection import 161 on the main body 161 and export 163 passage 165, the through hole 167 that is connected with passage 165 and be communicated with through hole 167.Through hole 167 is used for being communicated with fixing hole 169 and passage 165.
See also Fig. 5, switch valve 17 is arranged in the fixing hole 169 of main body 161, is used for closing through hole 167.When through the pressure of the liquid of passage 165 during greater than the bearing capacity of switch valve 17, switch valve 17 is opened, thereby so that the partially liqs in the housing 16 flow out by through hole 167, reaches the purpose of the pressure that leaks.
Switch valve 17 comprises rupture disk 171 and is used for the fixedly annular fixing member 173 of rupture disk 171.Rupture disk 171 is arranged at fixing hole 169, is used for closing through hole 167.Rupture disk 171 is voltage-controlled parts, when the pressure that is subject to when rupture disk 171 reaches its bearing capacity, rupture disk 171 will break, thereby so that the partially liqs in the housing 16 can flow out from through hole 167, thereby avoid the destruction of the drilling equipment that causes because of hypertonia.
Liquid or gas etc. is from import 163 admission passages 165, and when the pressure of described liquid or gas etc. during less than or equal to the bearing capacity of rupture disk 171, liquid normally flows out from exporting 164 after via passage 167; When the pressure of described liquid during greater than the bearing capacity of rupture disk 171; rupture disk 171 breaks; thereby so that the partially liqs in the housing 16 can flow out from through hole 167, thereby avoid the destruction that the member of drilling equipment produced because of the hypertonia of liquid, the protection drilling equipment.
Claims (6)
1. pressure limiting device, comprise housing and the switch valve that is arranged on the described housing, offer on the described housing fluid circulation passage and with the through hole of described channel connection, described switch valve is used for cutting out described through hole, open under the certain pressure of fluid that described switch valve can be in described passage, so that the fluid in the described passage flows out by described through hole.
2. pressure limiting device as claimed in claim 1, it is characterized in that: described switch valve comprises rupture disk, described rupture disk is used for closing described through hole; When the pressure of the fluid in the described passage during greater than the bearing capacity of described rupture disk, described rupture disk breaks, and described through hole is opened.
3. pressure limiting device as claimed in claim 2, it is characterized in that: described switch valve also comprises fixture, described fixture is fixed in described rupture disk on the described housing.
4. pressure limiting device as claimed in claim 3, it is characterized in that: described fixture is nut.
5. pressure limiting device as claimed in claim 3, it is characterized in that: offer the fixing hole that is connected with described through hole on the described housing, described rupture disk is arranged in the described fixing hole, and described fixture is fixed in the described fixing hole, is used for fixing described rupture disk.
6. pressure limiting device as claimed in claim 5, it is characterized in that: be raised with projection on the described housing, described fixing hole is opened on the described projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101965198A CN102877805A (en) | 2011-07-14 | 2011-07-14 | Pressure-limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101965198A CN102877805A (en) | 2011-07-14 | 2011-07-14 | Pressure-limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102877805A true CN102877805A (en) | 2013-01-16 |
Family
ID=47479295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101965198A Pending CN102877805A (en) | 2011-07-14 | 2011-07-14 | Pressure-limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102877805A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427348A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Lateral pipe drilling device with controllable lateral pipe extension speed |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH685307A5 (en) * | 1993-02-17 | 1995-05-31 | Peter Reinke | Emergency pressure release for container |
| CN1153723A (en) * | 1995-10-10 | 1997-07-09 | 莫顿国际股份有限公司 | Fluid fueled inflator with flow reversal |
| CN1300340A (en) * | 1998-05-14 | 2001-06-20 | 法克有限公司 | Downhole dump valve |
| CN1346423A (en) * | 1999-02-19 | 2002-04-24 | 施卢默格海外有限公司 | Actuation of downhole device |
| CN2851574Y (en) * | 2005-07-01 | 2006-12-27 | 中国石油化工集团公司 | Rupture disc controlled type spherical downhole shut-in valve |
| CN101052835A (en) * | 2004-05-07 | 2007-10-10 | 西门子公司 | Over-voltage protective device with breakdown plate |
| CN201706028U (en) * | 2010-04-28 | 2011-01-12 | 上海华理安全装备有限公司 | Rupture disc device with rupture disc and press ring combination |
| CN202148877U (en) * | 2011-07-14 | 2012-02-22 | 四川宏华石油设备有限公司 | Pressure limiting device |
-
2011
- 2011-07-14 CN CN2011101965198A patent/CN102877805A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH685307A5 (en) * | 1993-02-17 | 1995-05-31 | Peter Reinke | Emergency pressure release for container |
| CN1153723A (en) * | 1995-10-10 | 1997-07-09 | 莫顿国际股份有限公司 | Fluid fueled inflator with flow reversal |
| CN1300340A (en) * | 1998-05-14 | 2001-06-20 | 法克有限公司 | Downhole dump valve |
| CN1346423A (en) * | 1999-02-19 | 2002-04-24 | 施卢默格海外有限公司 | Actuation of downhole device |
| CN101052835A (en) * | 2004-05-07 | 2007-10-10 | 西门子公司 | Over-voltage protective device with breakdown plate |
| CN2851574Y (en) * | 2005-07-01 | 2006-12-27 | 中国石油化工集团公司 | Rupture disc controlled type spherical downhole shut-in valve |
| CN201706028U (en) * | 2010-04-28 | 2011-01-12 | 上海华理安全装备有限公司 | Rupture disc device with rupture disc and press ring combination |
| CN202148877U (en) * | 2011-07-14 | 2012-02-22 | 四川宏华石油设备有限公司 | Pressure limiting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427348A (en) * | 2020-10-14 | 2022-05-03 | 中国石油化工股份有限公司 | Lateral pipe drilling device with controllable lateral pipe extension speed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |