CN201221332Y - Controllable orifice blowout prevention back-pressure apparatus - Google Patents
Controllable orifice blowout prevention back-pressure apparatus Download PDFInfo
- Publication number
- CN201221332Y CN201221332Y CNU2008201477338U CN200820147733U CN201221332Y CN 201221332 Y CN201221332 Y CN 201221332Y CN U2008201477338 U CNU2008201477338 U CN U2008201477338U CN 200820147733 U CN200820147733 U CN 200820147733U CN 201221332 Y CN201221332 Y CN 201221332Y
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- CN
- China
- Prior art keywords
- drilling tool
- gland
- tool sleeve
- sleeve pipe
- drilling
- 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 discloses a controllable orifice anti-blowout back pressure device, which comprises a drilling tool sleeve which is provided with an inner hole; the drilling rod of a drilling tool can penetrate through the drilling tool sleeve; a flange disc is fixed outside the bottom opening of the drilling tool sleeve; a drain pipe is arranged at the side of the drilling tool sleeve and is communicated with the inner cavity of the drilling tool sleeve; the top end of the drilling tool sleeve is connected with gland through threads in a rotating way; a jack is arranged at the top surface of the gland; the aperture of the jack is less than the aperture of the inner hole of the drilling tool sleeve; thus the drilling tool can be inserted into the jack; a stage structure is arranged in the drilling tool sleeve and corresponding to the top surface of the gland; and a sealing component which can be compacted and opened by the gland is arranged between the stage structure and the top surface of the gland. The utility model has the advantages of small volume, light weight and convenient use, reduces the drainage cost, improves the construction environment, and ensures the safety of the drilling staff and the nearby construction personnel.
Description
Technical field
The utility model relates to the down-hole and visits water construction equipment, especially a kind of controllable type aperture blowout prevention back-pressure device.
Background technology
Down-hole construction water exploring drill hole because hydraulic pressure height, water yield are big, threatens often for constructor's safety, is to be in low-lying place in the job location sometimes, and when not having nature sluicing condition, water outlet will the low-lying place alluvial in the tunnel, influences circulation of air and pedestrian.
The utility model content
The utility model purpose is to provide a kind of and water under high pressure can be discharged and not from the drilling rod ejection, drilling rod is sealed controllable type aperture blowout prevention back-pressure device closely from Bypass hose.
For reaching above-mentioned purpose, cavity polyhedral filling and rapid of the present utility model adopts following technical scheme: controllable type aperture blowout prevention back-pressure device, comprise the interspersed drilling tool sleeve pipe of drilling rod that can hold drilling tool with endoporus, the bottom opening external fixation of described drilling tool sleeve pipe has flange, the side of drilling tool sleeve pipe is provided with the tapping pipe that communicates with its inner chamber, the top of drilling tool sleeve pipe is connected with gland by screw thread, the end face of gland offers the jack for drilling tool insertion of aperture less than drilling tool cover pipe orifice, be provided with the ledge structure corresponding in the described drilling tool sleeve pipe, between the end face of this ledge structure and gland, be provided with and be glanded the open seal of compression with the end face of gland.
Described seal is a wick, is provided with ring-shaped step in the described drilling tool cover pipe orifice, on this ring-shaped step packing ring is housed, and wick is fitted between packing ring and the gland end face.
Snap joint is equipped with at the external port place of described tapping pipe.
The utility model in use, the utility model is installed in big gate top, after the boring water outlet,, drilling rod is held tightly by tightening loam cake, the water under high pressure that prevents to hole is hurted sb.'s feelings along the drilling rod ejection, the discharge opening outer end can connect snap joint, can connect discharge pipe line rapidly, and water outlet is drained into nature sluicing place, thereby reduce the draining link, and guaranteed the safety of constructor driller and the low-lying place near, treat that water under high pressure is discharged after, suitably unscrew loam cake at last, drilling tool is proposed, it is little that this device has a volume, advantage in light weight, easy to use can reduce effluent cost, improve construction environment, guaranteed driller and near constructor's safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
The specific embodiment
As shown in Figure 1, controllable type of the present utility model aperture blowout prevention back-pressure device, comprise the interspersed drilling tool sleeve pipe 1 of drilling rod that can hold drilling tool with endoporus, the bottom opening peripheral solder of drilling tool sleeve pipe 1 has flange 2, the side of drilling tool sleeve pipe 1 is provided with the tapping pipe 3 that communicates with its inner chamber, and snap joint 9 is equipped with at the external port place of tapping pipe 3.The top of drilling tool sleeve pipe 1 is connected with gland 4 by screw thread, the end face of gland 4 offers the jack 5 for drilling tool insertion of aperture less than the endoporus of drilling tool sleeve pipe 1, be provided with ring-shaped step 6 in drilling tool sleeve pipe 1 endoporus, be provided with two packing rings 7 and wick 8 between the bottom of ring-shaped step 6 and gland 4 end faces from bottom to top successively, gland 4 can make it in expanded radially wick 8 compressions when screwing, thereby holds the drilling rod of drilling tool tightly.
Claims (3)
1, controllable type aperture blowout prevention back-pressure device, comprise the interspersed drilling tool sleeve pipe of drilling rod that can hold drilling tool with endoporus, it is characterized in that: the bottom opening external fixation of described drilling tool sleeve pipe has flange, the side of drilling tool sleeve pipe is provided with the tapping pipe that communicates with its inner chamber, the top of drilling tool sleeve pipe is connected with gland by screw thread, the end face of gland offers the jack for drilling tool insertion of aperture less than drilling tool cover pipe orifice, be provided with the ledge structure corresponding in the described drilling tool sleeve pipe, between the end face of this ledge structure and gland, be provided with and be glanded the open seal of compression with the end face of gland.
2, controllable type aperture blowout prevention back-pressure device according to claim 1, it is characterized in that: described seal is a wick, is provided with ring-shaped step in the described drilling tool cover pipe orifice, on this ring-shaped step packing ring is housed, wick is fitted between packing ring and the gland end face.
3, controllable type aperture blowout prevention back-pressure device according to claim 1 and 2, it is characterized in that: snap joint is equipped with at the external port place of described tapping pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201477338U CN201221332Y (en) | 2008-06-30 | 2008-06-30 | Controllable orifice blowout prevention back-pressure apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201477338U CN201221332Y (en) | 2008-06-30 | 2008-06-30 | Controllable orifice blowout prevention back-pressure apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221332Y true CN201221332Y (en) | 2009-04-15 |
Family
ID=40574841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201477338U Expired - Fee Related CN201221332Y (en) | 2008-06-30 | 2008-06-30 | Controllable orifice blowout prevention back-pressure apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221332Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979475A (en) * | 2012-11-30 | 2013-03-20 | 山东大学 | Orifice blowout prevention and water blocking system and water blocking process of orifice blowout prevention and water blocking system |
-
2008
- 2008-06-30 CN CNU2008201477338U patent/CN201221332Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979475A (en) * | 2012-11-30 | 2013-03-20 | 山东大学 | Orifice blowout prevention and water blocking system and water blocking process of orifice blowout prevention and water blocking system |
| CN102979475B (en) * | 2012-11-30 | 2016-06-01 | 山东大学 | A kind of orifice blowout prevention Water blocking system and the technique that blocks water thereof |
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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: 20090415 Termination date: 20100630 |