CN2545359Y - Theftproof collar clamp for oil production wellhead - Google Patents
Theftproof collar clamp for oil production wellhead Download PDFInfo
- Publication number
- CN2545359Y CN2545359Y CN 02214279 CN02214279U CN2545359Y CN 2545359 Y CN2545359 Y CN 2545359Y CN 02214279 CN02214279 CN 02214279 CN 02214279 U CN02214279 U CN 02214279U CN 2545359 Y CN2545359 Y CN 2545359Y
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- CN
- China
- Prior art keywords
- special
- collar clamp
- bolt
- production wellhead
- front band
- 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 provides a theftproof collar clamp of an oil production wellhead, which belongs to a connecting component between a valve and a pipeline and solves the problem that a screw bolt and a screw nut of the collar clamp of an oil production wellhead are easy to steal and dismount. The theftproof collar clamp is composed of an upper collar clamp, a lower collar clamp, special screw bolts and protection tiles, wherein the left and the right special screw bolts are directly arranged in thread holes of the upper and the lower collar clamps (a screw nut is omitted), and a circular lug boss of the screw bolt and a special-shaped head which are sunk into an inner hole of the upper collar clamp can only be mounted and dismounted by a special spanner or a special tool; the left and the right sides of the upper collar clamp are respectively welded with one protection tile for preventing the screw bolts from being sawed in a gap position. The utility model which has the advantages of simple structure, firmness, high reliability, and convenient assembly and disassembly can be used in the valve position of the oil production wellhead and can also be used in the connecting position of a valve and a pipeline on other occasions.
Description
(1) technical field
The utility model relates to and adopts pipe box or ring (clip) separately to be clipped in around the pipe termination, realize connecting between pipeline and the valve, also relating to the draw bail that prevents that bolt, nut from dismantling without approval, particularly is a kind of production wellhead Theft-proof collar clamp.
(2) background technology
Generally all use clamp connection between the valve of production wellhead and the petroleum pipeline, this structure comprises the clip body of a pair of semi-round ring shape, two bolts and two nuts.Utilize the interior annular dovetail groove of clip body that the clip head (flange) of valve and pipeline port is tied tight and be in the same place, formation is tightly connected.Because this clamp connection mode had been both simple and convenient, solid and reliable again, be used widely so between valve and pipeline, be connected part, particularly almost all adopt this connected mode on the production wellhead.But, because producing well is all in the open air, overwhelming majority time unmanned, the lawless person uses common wrench just can take clip apart, stolen, robber's gas, robber's valve, robber's clip.Each oil field of this phenomenon all often takes place, and not only causes economic loss, influence to produce and contaminated environment, also can cause accidents such as blowout, fire when serious.Find two pieces of " Theft-proof collar clamp " patent documentations by retrieval, the patent No. is respectively " 94242792 " and " 95220552 ", can only prevent to use the common wrench demounting bolt, can not prevent that still the lawless person is sawed-off bolt from upper and lower clip slit with hacksaw, also just can not fundamentally solve the easily stolen problem of unloading of well head clip.
(3) summary of the invention
The technical problems to be solved in the utility model just provides the distinguished production wellhead Theft-proof collar clamp of a kind of architectural feature, and is both simple in structure, and mounting or dismounting are convenient, and are solid and reliable, can solve the stolen problem of unloading of well head clip again effectively.
The technical scheme that solves the problems of the technologies described above employing is:
This Theft-proof collar clamp is by front band, lower catch hoop, bolt and protect and watt form.The right and left that it is characterized in that front band and lower catch hoop all has screwed hole.With in the screwed hole of the upper and lower clip of the direct threading of two special bolts (having saved nut), upper and lower clamp connection is integral, valve and pipeline are coupled together.Its bolt head sinks in the hole of front band, can only could load and unload bolt with special spanner or instrument.One is protected watt in the each side welding of front band, and the gap shielding between the upper and lower clip is got up, and prevents that bolt is by sawed-off.
The special bolt of above-mentioned production wellhead Theft-proof collar clamp comprises three sections, and first half is a thread segment, and latter half of is boss platform section near thread segment, and remainder is processed into abnormity head section.Each bolt all has the special-shaped head of a special shape even, and a profile spanner supporting with it or instrument are arranged.
Protecting watt of above-mentioned production wellhead Theft-proof collar clamp is the semi-circle tubular shape.Protecting watt upper end flushes and is welded on the front band with front band.Protect watt lower end and grow 1～2 centimetre than lower catch hoop.Protect the slit between the upper and lower clip that watt width can shelter from special bolt middle part.
This Theft-proof collar clamp has all reduced by two nuts than general clip and above-mentioned patent clip, has increased by two and has protected watt.Its upper and lower clip shape invariance, structure is still uncomplicated, installs and removes still very convenient, and solid and reliable.Not only can prevent to unload bolt arbitrarily, and can prevent sawed-off Bolt dismantling clip, thereby solve the easily stolen problem of unloading of production wellhead clip effectively, have better economic benefit and social benefit with common wrench.
(4) description of drawings
Accompanying drawing 1 is an overall structure partial schematic sectional view of the present utility model.
Accompanying drawing 2 is enlarged diagrams of its special bolt.
Accompanying drawing 3 is A-A section schematic top plan view of Fig. 2.
In the accompanying drawing, the 1st, front band, the 2nd, lower catch hoop, the 3rd, special bolt, the 4th, protect watt.
(5) specific embodiment
As shown in Figure 1, the production wellhead Theft-proof collar clamp that the utility model provides is by front band 1, lower catch hoop 2, special bolt 3 with protect watts 4 and form.All there is screwed hole on the both sides of upper and lower clip 1,2, with in the screw of the upper and lower clip 1,2 of two special bolts, 3 direct threadings (having saved nut), upper and lower clip 1,2 are linked into an integrated entity.The boss platform of bolt head and abnormity head sink in the hole of front band 1, can only could load and unload bolt 3 with special spanner or instrument.One is protected watts 4 in each welding of the right and left of front band 1, and the gap B of the right and left of upper and lower clip 1,2 is covered up, and prevents that spiral shell complete 3 is herein by sawed-off.
By Fig. 1 and Fig. 2 as seen, special bolt 3 comprises three sections, and first half is a thread segment, and latter half of is boss platform section near thread segment, remainder be processed into Fig. 2 and shown in Figure 3, can not use common wrench, can only be with the abnormity of special spanner or instrument loading and unloading section.
During installation, as shown in Figure 1, earlier upper and lower clip 1,2 is stuck in valve and the two joint of pipeline.Two special bolts 3 and tightening about refilling into.Then protecting watts 4 upper ends that are welded to front band 1.During dismounting, only need with special spanner or instrument from top insertion, be enclosed within on the abnormity head on bolt 3 tops, oppositely firmly can unload.
Claims (3)
1. production wellhead Theft-proof collar clamp, by front band (1), lower catch hoop (2), bolt (3) and protect watt (4) and form, the right and left that it is characterized in that front band (1) and lower catch hoop (2) all has screwed hole, directly put into two special bolts, lower catch hoop (1), (2) in the screwed hole, last, lower catch hoop (1), (2) link into an integrated entity, its bolt head sinks in the hole of front band (1), can only could load and unload bolt (3) with special spanner or instrument, protect watt (4) last one of the each side welding of front band (1), last, lower catch hoop (1), (2) (B) covers up the slit between.
2. production wellhead Theft-proof collar clamp according to claim 1, it is characterized in that special bolt (3) comprises three sections, first half is a thread segment, and latter half of is boss platform section near thread segment, and remainder is processed into special-shaped section that can only could load and unload with special spanner or instrument.
3. production wellhead Theft-proof collar clamp according to claim 1, it is characterized in that protecting watt and be the semi-circle tubular shape, its upper end flushes and is welded on front band (1) with front band (1), its lower end grows 1～2 centimetre than lower catch hoop (2), and its width can shelter from the slit (B) between the upper and lower clip at special bolt (3) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02214279 CN2545359Y (en) | 2002-04-23 | 2002-04-23 | Theftproof collar clamp for oil production wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02214279 CN2545359Y (en) | 2002-04-23 | 2002-04-23 | Theftproof collar clamp for oil production wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2545359Y true CN2545359Y (en) | 2003-04-16 |
Family
ID=33693642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02214279 Expired - Fee Related CN2545359Y (en) | 2002-04-23 | 2002-04-23 | Theftproof collar clamp for oil production wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2545359Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856493A (en) * | 2022-03-08 | 2022-08-05 | 江苏恒达机械制造有限公司 | Theftproof clamp device that oil recovery well head was used |
| CN116734033A (en) * | 2023-08-16 | 2023-09-12 | 三亚乾泰石油机械技术有限公司 | Antitheft device for long stop well mouth |
-
2002
- 2002-04-23 CN CN 02214279 patent/CN2545359Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856493A (en) * | 2022-03-08 | 2022-08-05 | 江苏恒达机械制造有限公司 | Theftproof clamp device that oil recovery well head was used |
| CN116734033A (en) * | 2023-08-16 | 2023-09-12 | 三亚乾泰石油机械技术有限公司 | Antitheft device for long stop well mouth |
| CN116734033B (en) * | 2023-08-16 | 2023-10-20 | 三亚乾泰石油机械技术有限公司 | Antitheft device for long stop well mouth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |