CN101397897A - Oil production wellhead stop valve - Google Patents
Oil production wellhead stop valve Download PDFInfo
- Publication number
- CN101397897A CN101397897A CNA2007101223793A CN200710122379A CN101397897A CN 101397897 A CN101397897 A CN 101397897A CN A2007101223793 A CNA2007101223793 A CN A2007101223793A CN 200710122379 A CN200710122379 A CN 200710122379A CN 101397897 A CN101397897 A CN 101397897A
- Authority
- CN
- China
- Prior art keywords
- valve
- outlet end
- stop valve
- oil production
- port
- 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.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to a cut-off valve for an oil production wellhead, which pertains to the technical field of wellhead equipment for oil drilling and production engineering. The valve consists of a pressure relief bolt (1), a valve body (3), a valve stem (4), a feeding box (5), a hand wheel (8) and the like and is characterized in that: the direction of an inlet end (9) and the direction of an outlet end (2) are designed into a vertical type, all flows of the inlet end (9) and the outlet end (2) are of linear pattern and the end sizes of the inlet end (9) and the outlet end (2) are different; and the pressure relief bolt (1) is arranged below the valve body (3) and internally provided with a T-shaped flow channel. The valve adopts angle type connection, has compact structure, improves safety and reliability, reduces production cost and can effectively prevent reverse installation of the inlet end and the outlet end, discharge high pressure liquid in the channel between the outlet end and the buffers in time and effectively protect pressure gauges so as to ensure accurate measurement.
Description
Technical field:
The present invention relates to a kind of oil production wellhead stop valve, belong to petroleum engineering wellhead equipment technical field.
Background technology:
In oil recovery process, down-hole oil tube pressure and casing pressure are very important production informations.In order to understand these force value exactly, general all setting pressure table, snubber, angle joint and stop valve etc. on the little four-way of wellhead assembly and big four.Stop valve plays the control runner and opens and closes; Angle joint can guarantee that pressure meter is in vertical installation site; The effect of snubber is to change runner and buffer stream speed, with the protection pressure meter.
The stop valve of existing typical structure can be realized the function of monitoring pressure value substantially, but exists many weak points.One: the runner of stop valve is that curve or other are irregularly shaped, and its difficulty of processing is big, the cost height.Its two: general all the port screw thread at the import and export place of stop valve is dimensioned to the same.So just brought import and export to adorn wrong problem easily.If adorn the import and export of stop valve is counter, be difficult at the beginning of the installation find that stop valve is worked in this case that consumable accessorys such as joint ring bear pressure for a long time and corroded, and how long have more than is neededly make, and will cause leakage.Its three: the effect of angle joint is very single, just provides one 90 ° setting angle conversion.Its two ends also all are with being threaded, and this has just increased the probability that lost efficacy.Its four: do not have pressure relief device in the total, liquid resides in snubber and the pressure meter easily, causes the force value of testing inaccurate, and component are corroded.
Summary of the invention:
In order to overcome the deficiencies in the prior art part, the object of the present invention is to provide a kind of oil production wellhead stop valve, make it to have that simple in structure, compact, angie type connects, band release screw, can effectively prevent wrong characteristics of installing.
The present invention realizes above-mentioned purpose by following technical solution.
In a kind of structure of oil production wellhead stop valve, be provided with release screw (1), valve body (3), valve rod (4), stuffing box (5), O type rubber seal (6), metallic packing (7), handwheel (8) etc., the direction of entrance point (9) and the direction of the port of export (2) are designed to orthogonal form, all runners of the entrance point (9) and the port of export (2) all adopt the linear pattern runner, and the port sizes of the entrance point (9) and the port of export (2) is inequality; In the below of valve body (3) release screw (1) is installed, and the inside of release screw (1) is provided with T type runner.
The present invention compared with prior art has following beneficial effect:
1, because the direction of entrance point and the direction of the port of export are designed to orthogonal form, adopt the angie type connection, the function of original angle joint is incorporated on the stop valve, two secondary connecting threads have been saved, compact conformation has improved safety and reliability, has reduced manufacturing cost.
2, the port of the entrance point and the port of export adopts the screw thread of different size specification, during installation, can effectively avoid with the entrance point and the port of export the direction dress anti-.
3, in the below of valve body (3) the release screw is installed, can in time the port of export be released to the highly pressurised liquid in the runner between the snubber, can protect pressure meter effectively, and can guarantee the precision measured.
Description of drawings:
Fig. 1 is a kind of general structure schematic diagram of oil production wellhead stop valve.
Fig. 2 is a kind of installment state schematic diagram of oil production wellhead stop valve.
In the drawings: 1. release screw, the 2. port of export, 3. valve body, 4. valve rod, 5. stuffing box, 6.O type rubber seal, 7. metallic packing, 8. handwheel, 9. entrance point, 10. pressure meter, 11. snubbers, 12. oil production wellhead stop valves, 13. concentric reducers.
The specific embodiment:
The present invention is made up of release screw (1), valve body (3), valve rod (4), stuffing box (5), O type rubber seal (6), metallic packing (7), handwheel (8) etc., the direction of the entrance point (9) of valve body (3) and the direction of the port of export (2) are designed to orthogonal form, make entrance point and the port of export at an angle of 90 formula be connected.According to the practical application needs, entrance point (9) all is an internal thread with the port of export (2) two ends, and the dimensions of port screw thread is obviously inequality.All passages in the valve body (3) all are linear passage, can adopt simple processing mode such as brill, hinge to process.Sealing in the stuffing box (5) is sealed by the acting in conjunction of O type rubber seal (6) and metallic packing (7).The handwheel of switch stop valve (8) is circular, and valve rod (4) is the rising stem (RS.) form.The on off state of stop valve can carry out intuitive judgment by the adjustable height of valve rod (3).In the below of valve body (3) release screw (1) is installed, and the inside of release screw (1) is provided with T type runner, the fluid of release flows out from this passage.A kind of oil production wellhead stop valve of the present invention is installed on the wellhead assembly, and entrance point (9) is connected with concentric reducer (13), and the port of export (2) is connected with an end of snubber (11), and the other end of snubber (11) is connected with pressure meter (10).When carrying out pressure detecting, rotate counterclockwise handwheel and open stop valve as needs, treat that pointer on the pressure meter is stable after, read force value.Pressure detecting finishes, and at first clockwise rotates handwheel and closes stop valve, turns on the release nut with spanner then, treats that liquid flows out fully again with the release nut screwing clamping.
Claims (3)
1, a kind of oil production wellhead stop valve, form by valve body (3), valve rod (4), stuffing box (5), handwheel (8) etc., it is characterized in that the direction of entrance point (9) and the direction of the port of export (2) are designed to orthogonal form, release screw (1) is installed in the below of valve body (3).
2, a kind of oil production wellhead stop valve according to claim 1 is characterized in that all runners of the entrance point (9) and the port of export (2) all adopt the linear pattern runner, and the port sizes of the entrance point (9) and the port of export (2) is inequality.
3, a kind of oil production wellhead stop valve according to claim 2 is characterized in that the inside of release screw (1) is provided with T type runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101223793A CN101397897A (en) | 2007-09-25 | 2007-09-25 | Oil production wellhead stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101223793A CN101397897A (en) | 2007-09-25 | 2007-09-25 | Oil production wellhead stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101397897A true CN101397897A (en) | 2009-04-01 |
Family
ID=40516711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101223793A Pending CN101397897A (en) | 2007-09-25 | 2007-09-25 | Oil production wellhead stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101397897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134130A (en) * | 2015-07-27 | 2015-12-09 | 天津市浩帝科贸有限公司 | Production well mouth stop valve apparatus |
| CN109357027A (en) * | 2018-11-16 | 2019-02-19 | 重庆宗星机械有限责任公司 | A kind of combined type shut-off valve |
-
2007
- 2007-09-25 CN CNA2007101223793A patent/CN101397897A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134130A (en) * | 2015-07-27 | 2015-12-09 | 天津市浩帝科贸有限公司 | Production well mouth stop valve apparatus |
| CN109357027A (en) * | 2018-11-16 | 2019-02-19 | 重庆宗星机械有限责任公司 | A kind of combined type shut-off valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8167268B2 (en) | Dual chamber orifice fitting plate support | |
| CN101397897A (en) | Oil production wellhead stop valve | |
| CN107654702A (en) | A kind of check valve | |
| CN201121507Y (en) | Oil production shaft mouth break valve | |
| CN205049302U (en) | High pressure valve sealing performance detection device | |
| CN204649491U (en) | A kind of New type of S F 6multi-purpose gas way adapter | |
| CN204154454U (en) | A kind of Subzero valve tightness test device | |
| CN203453168U (en) | Blowout preventer control device with pneumatic pressure testing function | |
| CN201561130U (en) | Oil well plug valve | |
| CN204269312U (en) | A kind of helium nitrogen gas mixing device for gases at high pressure leak detection | |
| CN203216745U (en) | Transformer oil extraction device | |
| CN209725342U (en) | A kind of safety valve with pressure compensation | |
| CN105738155A (en) | Oil product sampling device | |
| CN202708158U (en) | Double ball valves containing plate valve, and detection air path using the same | |
| CN216866641U (en) | Fire-free recoverable wellhead device for oil well yield detection | |
| CN203310470U (en) | Online plug-in type flowmeter | |
| CN104295766A (en) | Pressure measurable ball valve for tests | |
| CN205090127U (en) | It connects to prevent tearing open reduced tee | |
| CN108730540A (en) | Instrument block valve | |
| CN203214957U (en) | Combined pressure gauge stop valve | |
| CN103292855A (en) | On-line pluggable target flowmeter | |
| CN203052095U (en) | Pipe saddle bolt stopping device | |
| CN215338755U (en) | Ultrasonic wave valve leakage detection device | |
| CN219673416U (en) | Safety valve of voltage stabilizer | |
| CN201177101Y (en) | Conical surface linear sealing hole plate valve |
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 |
Open date: 20090401 |