CN201372770Y - Blowout prevention valve - Google Patents
Blowout prevention valve Download PDFInfo
- Publication number
- CN201372770Y CN201372770Y CN200920143179U CN200920143179U CN201372770Y CN 201372770 Y CN201372770 Y CN 201372770Y CN 200920143179 U CN200920143179 U CN 200920143179U CN 200920143179 U CN200920143179 U CN 200920143179U CN 201372770 Y CN201372770 Y CN 201372770Y
- Authority
- CN
- China
- Prior art keywords
- packing
- prevention valve
- blowout prevention
- drill
- rod
- 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 - Fee Related
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Abstract
The utility model relates to a blowout prevention valve capable of preventing water from bursting from a drill-rod in grouting engineering construction, characterized in that: the blowout prevention valve comprises a high-pressure flange (4), an outer shell (2) and a sheath pressure plate (1), wherein the outer shell (2) is welded on one end of the high-pressure flange (4) and the sheath pressure plate (1) is in fit connection with the screw thread (5) on the external cylindrical surface and the screw in the outer shell (2) and a set of packing (3) in fit seal with the drill-rod are set in the inner hole of the outer shell (2) and the packing (3) is pressed and fastened by the sheath pressure plate (1). The packing is compressed and deformed by the sheath pressure plate to seal the drill-rod, thus the water or sand is sealed to prevent mine flooding or sand blasting, when the blowout prevention valve is under large pressure (below 10mpa) at high flow rate of 100m3/h, the water at the hole mouth is closed in most short time (5 minutes) without taking out the drill-rod.
Description
Technical field
The utility model device is a kind of safety device that prevents the drilling rod gushing water that relates in the construction of Grouting engineering probing water, is adapted to especially prevent gushing water or sandblast in the underground engineering constructions such as mine shaft and subway.
Background technology
In mine and the underground construction mortar depositing construction, often need the detection of drilling of aquifer or exceptions area and drifting sand layer.Because the aquifer is below the face of land, there is water purification pressure, and when construction drill, because drilling rod in the hole and rotation, the big or sandblast situation of water outlet occurs, if can not in time drilling rod be taken out, can't valve-off and cause prominent watered-out well or sandblast accident.
The utility model content
The purpose of this utility model just provides a kind of blowout prevention valve that is used with drilling rod, enables in the shortest time, under the situation of drilling rod not being taken out, water outlet or sandblast is controlled.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of blowout prevention valve, it is characterized in that it is made up of high pressure flange dish, outer tube and sleeve pipe platen, outer tube is welded in an end of high pressure flange dish, the sleeve pipe platen is connected by screw thread on its outer cylinder and the screw in the outer tube, in the endoporus of outer tube, be provided with one group of packing with the drilling rod fitted seal, and packing be fixed by the sleeve pipe platen.
Advantage of the present utility model is: by the sleeve pipe platen with packing compressive strain after sealing drilling rod, reach the purpose of water shutoff or envelope sand, avoid flooding well or sandblast accident and take place, this valve we in use the maximum net water pressure be below the 10Mpa, the water yield is 100m
3During/h situation, under the situation of not taking out drilling rod, aperture water can be closed in 5 minutes shortest times.
Description of drawings
Fig. 1 is a sectional view of the present utility model.
The specific embodiment:
As shown in Figure 1, the blowout prevention valve that the utility model provides mainly is made up of high pressure flange dish 4, outer tube 2 and sleeve pipe platen 1, and outer tube 2 is welded in an end of high pressure flange dish 4, and high pressure flange dish 4 centers are provided with the hole that cooperates with drilling rod 6.Sleeve pipe platen 1 is connected by the screws in the rectangular thread on its outer cylinder 5 and the outer tube 2, is provided with one group of packing 3 with the drilling rod fitted seal in the endoporus of outer tube 2, and by sleeve pipe platen 1 packing 3 is fixed.
High pressure flange dish 4 can be selected its thickness according to the hydraulic pressure of being controlled, as cooperating with opening arrangement with the processing of thickness 30mm steel plate; Outer tube 2 adopts D40, φ 108-φ 127mm, and thickness is made for the 8-10mm seamless steel pipe, and inwall processing rectangular thread cooperates with the sleeve pipe platen; Sleeve pipe platen 1 adopts 40Cr, the processing of φ 108-φ 127mm round steel, interstitial hole is by processing greater than drilling rod 2mm, sleeve pipe platen and outer tube adopt rectangular thread to cooperate, packing 3 in the outer tube can be selected high pressure butter packing for use, once when the prominent sand of gushing water takes place, only need the sleeve pipe platen is screwed, make butter packing platen, i.e. precipitable water or sand seal closed.
Claims (1)
1, a kind of blowout prevention valve, it is characterized in that it is made up of high pressure flange dish (4), outer tube (2) and sleeve pipe platen (1), outer tube (2) is welded in an end of high pressure flange dish (4), sleeve pipe platen (1) is connected by the screw in screw thread on its outer cylinder (5) and the outer tube (2), in the endoporus of outer tube (2), be provided with one group of packing (3) with the drilling rod fitted seal, and packing (3) be fixed by sleeve pipe platen (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143179U CN201372770Y (en) | 2009-02-28 | 2009-02-28 | Blowout prevention valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143179U CN201372770Y (en) | 2009-02-28 | 2009-02-28 | Blowout prevention valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372770Y true CN201372770Y (en) | 2009-12-30 |
Family
ID=41498851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920143179U Expired - Fee Related CN201372770Y (en) | 2009-02-28 | 2009-02-28 | Blowout prevention valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372770Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758595A (en) * | 2012-06-05 | 2012-10-31 | 徐毅 | Well blowout processing device of geothermal system |
| CN103216243A (en) * | 2013-04-24 | 2013-07-24 | 上海隧道工程股份有限公司 | Advance drill sealing device |
| CN103306633A (en) * | 2013-06-28 | 2013-09-18 | 邯郸市翔龙地质勘探有限公司 | Blowout control device for water detecting and draining drill hole |
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
-
2009
- 2009-02-28 CN CN200920143179U patent/CN201372770Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758595A (en) * | 2012-06-05 | 2012-10-31 | 徐毅 | Well blowout processing device of geothermal system |
| CN103216243A (en) * | 2013-04-24 | 2013-07-24 | 上海隧道工程股份有限公司 | Advance drill sealing device |
| CN103306633A (en) * | 2013-06-28 | 2013-09-18 | 邯郸市翔龙地质勘探有限公司 | Blowout control device for water detecting and draining drill hole |
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
| CN107989567B (en) * | 2018-01-16 | 2024-02-20 | 江苏航天鸿鹏数控机械有限公司 | Anti-blowout tool in sand blasting perforation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20140228 |