CN205025427U - Piston sample valve that prevents frostbite - Google Patents
Piston sample valve that prevents frostbite Download PDFInfo
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- CN205025427U CN205025427U CN201520650416.8U CN201520650416U CN205025427U CN 205025427 U CN205025427 U CN 205025427U CN 201520650416 U CN201520650416 U CN 201520650416U CN 205025427 U CN205025427 U CN 205025427U
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Abstract
The utility model discloses a piston sample valve that prevents frostbite belongs to the petroleum engineering field. A piston sample valve that prevents frostbite, includes: screw thread joint, piston, valve body, valve rod, hand wheel, valve body gland, sampling tube, piston seal, body seals circle. The screw thread connects one end and welds on oil return line, the other end and valve body left side end screw thread connection, valve body right -hand member and valve body gland threaded connection. Inside the piston lay in the valve body, the hand wheel lay in the valve body outside, and the valve rod left end welds on the piston right side, right -hand member and hand wheel threaded connection, well right part and valve body gland threaded connection. The sampling tube welding just communicates with the valve body inner chamber on valve body left end lateral wall. The inseparable suit of piston seal is on the piston to with valve body inner chamber sealing contact. The body seals circle sets up in the inner chamber of valve body left end to left end face seal contact with the piston. The embodiment of the utility model provides a piston sample valve that prevents frostbite, simple structure, it is convenient to implement, can prevent effectively that the sample valve from taking place to freeze stifledly in winter.
Description
Technical field
The utility model relates to petroleum works field, particularly a kind of piston type antifreezing sampling valve.
Background technology
Sample valve gathers out oil samples a kind of device often in oil mining process, is generally connected with oil return pipeline, when it samples in the winter time, easily because sampling valve inner divides the delay of profit, the phenomenon of sample valve frozen block occurs.Therefore, when using oil return sample valve in the winter time, need to carry out anti-frozen block process to it.
At present, prior art, usually through the distance reduced between sample cock and oil return pipeline, relies on oil temperature in oil return pipeline be delivered to sample valve to reduce or prevent the frozen block of well head sample valve simultaneously.But this mode still can not remove the profit in sampling valve body completely, after the profit remained in sampling valve body stops flowing, still can make sample valve generation frozen block phenomenon in various degree.So the sample valve providing a kind of effective anti-frozen block is very necessary.
Based on above-mentioned, designer provides a kind of piston type antifreezing sampling valve, and it can remove profit residual in sample valve completely, thus effectively prevents the frozen block of sample valve.
Utility model content
The utility model embodiment technical problem to be solved is, provides a kind of piston type antifreezing sampling valve.Concrete technical scheme is as follows:
A kind of piston type antifreezing sampling valve, comprising: threaded joint, piston, valve body, valve rod, handwheel, valve body gland, probe tube, piston packing, valve seals;
Described threaded joint one end is welded on well head oil return pipeline, and the other end is threaded with the left end of described valve body, and the right-hand member of described valve body is threaded with described valve body gland;
Described piston is positioned at described body cavity, and it is outside that described handwheel is positioned at described valve body, and the left end of described valve rod is welded on the right-hand member of described piston, and right-hand member is threaded with described handwheel, and middle right part is threaded with described valve body gland;
Described probe tube is welded on the sidewall of described valve body left end, and with the inner space of described valve body;
Described piston packing is closely sleeved on described piston, and seals with described valve interior wall and contact;
Described valve seals is arranged in the inner chamber of described valve body left end, and seals with the left side of described piston and contact.
Particularly, as preferably, described threaded joint is the short circuit head with interior screw thread, and axial length is 15-25mm.；
The left end of described threaded joint is welded on described oil return pipeline with embedded, and be threaded with described valve body left end inside right-hand member, middle part is provided with taper sedimentation hole.
Particularly, as preferably, described piston comprises: connect in turn and the cylindrical body arranged with one heart, cylindricality end and tapered end;
The diameter of described cylindricality end is less than the diameter of described cylindrical body, and described tapered end coordinates with described taper sedimentation hole and contacts.
Particularly, as preferably, described piston packing is 2, is set in the cylindrical body of described piston.
Particularly, as preferably, the difference of the diameter of described cylindrical body and the diameter of described body cavity is less than 1mm.
Particularly, as preferably, described valve seals seals with the left side of described cylindrical body and contacts.
Particularly, as preferably, described valve body is tubular structure, and left end arranged outside has the male thread matched with screw thread in described threaded joint, is provided with internal thread inside right-hand member, to be threaded with described valve body gland.
Particularly, as preferably, the middle part of described valve body gland is processed with trapezoidal thread through hole, and the middle right part of described valve rod is provided with the trapezoidal external screw thread matched with described trapezoidal thread through hole.
Particularly, as preferably, described handwheel comprises: annular handwheel rotating disk and handwheel pressure cap;
Described handwheel rotating disk is threaded with described valve rod right-hand member by described handwheel pressure cap.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
The piston type antifreezing sampling valve that the utility model embodiment provides, by threaded joint, this sample valve is fixed on oil return pipeline, and body cavity is connected with oil return pipeline, using the piston in valve body as the opening and closing element of this sample valve, utilize the piston packing on piston body cavity to be separated into admission chamber and non-admission chamber simultaneously, valve seals is utilized to make can seal between piston left side and valve body end face, profit when ensureing that sample valve cuts out in body cavity is all squeezed in oil return pipeline, ensure to remain without profit in this body cavity, thus prevent sample valve frozen block.Visible, the piston type antifreezing sampling valve that the utility model embodiment provides, structure is simple, and it is convenient to implement, and effectively prevents sample valve from the winter time frozen block occurring, and is convenient to large-scale promotion application.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the piston type antifreezing sampling valve that the utility model embodiment provides;
Fig. 2 is in the piston type antifreezing sampling valve that provides of the another embodiment of the utility model, the structural representation of piston.
Reference numeral represents respectively:
1 well head oil return pipeline,
2 threaded joints,
3 pistons,
301 cylindrical body,
302 cylindricality ends,
303 tapered ends
4 valve bodies,
5 valve rods,
6 valve body glands,
7 handwheels,
701 handwheel pressure caps,
8 piston packings,
9 probe tubes,
10 valve seals.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of piston type antifreezing sampling valve, comprising: threaded joint 2, piston 3, valve body 4, valve rod 5, handwheel 7, valve body gland 6, probe tube 9, piston packing 8, valve seals 10.One end of threaded joint 2 is welded on well head oil return pipeline 1, and the other end is threaded with valve body 4 left end, and the right-hand member of valve body 4 is threaded with valve body gland 6.Piston 3 is positioned at the inner chamber of valve body 4, and it is outside that handwheel 7 is positioned at valve body 4, and the left end of valve rod 5 is welded on piston 3 right-hand member, and the right-hand member of valve rod 5 is threaded with handwheel 7, and the middle right part of valve rod 5 is threaded with valve body gland 6.Probe tube 9 is welded on the sidewall of valve body 4 left end, and with the inner space of valve body 4.Piston packing 8 is closely sleeved on piston 3, and contacts with the inner wall sealing of valve body 4.Valve seals 10 is arranged in the inner chamber of valve body 4 left end, and seals with the left side of piston 3 and contact.
The piston type antifreezing sampling valve that the utility model embodiment provides, by threaded joint 2, this sample valve is fixed on well head oil return pipeline 1, and valve body 4 inner chamber is connected with well head oil return pipeline 1, using the piston 3 in valve body 4 as the opening and closing element of this sample valve, utilize the piston packing 8 on piston 3 that valve body 4 inner chamber is separated into admission chamber and non-admission chamber simultaneously, valve seals 10 is utilized to make can seal between piston 3 left side and valve body 4 end face, profit when ensureing that sample valve cuts out in valve body 4 inner chamber is all squeezed in well head oil return pipeline 1, ensure to remain without profit in this valve body 4 inner chamber, thus prevent sample valve frozen block.Visible, the piston type antifreezing sampling valve that the utility model embodiment provides, structure is simple, and it is convenient to implement, and effectively prevents sample valve from the winter time frozen block occurring, and is convenient to large-scale promotion application.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, its threaded joint 2 is for having the short circuit head of interior screw thread, and axial length is 15-25mm, preferred 20mm.The left end of threaded joint 2 is welded on well head oil return pipeline 1 with embedded, and the male thread arranged with valve body 4 left end skin inside the right-hand member of threaded joint 2 is threaded, and the middle part of threaded joint 2 is provided with taper sedimentation hole.
As shown in Figure 2, in the piston type antifreezing sampling valve that the utility model embodiment provides, piston 3 comprises: connect in turn and the cylindrical body 301 arranged with one heart, cylindricality end 302 and tapered end 303.The diameter of cylindricality end 302 is less than the diameter of cylindrical body 301, and tapered end 303 coordinates with the taper sedimentation hole of threaded joint 2 and contacts, thus is all extruded by profit residual in valve body 4.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, its piston packing 8 is 2, be set in the cylindrical body 301 of piston 3, more specifically twice piston packing 8 is sleeved on the position of cylindrical body 301 near two ends, thus seals the annular space formed between piston 3 and valve body 4.Twice piston packing 8 ensure that the sealing of annular space, prevents profit from the admission chamber of valve body 4 to the seepage of non-admission chamber, avoids profit to remain in the inner chamber of valve body 4.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, the difference of the diameter of its cylindrical body 301 and the diameter of valve body 4 inner chamber is less than 1mm, ensures that conventional piston packing 8 can make to form annular hole between piston 3 and valve body 4 and be sealed.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, its valve seals 10 seals with the left side of cylindrical body 301 and contacts.Valve seals 10 and piston packing 8 achieve double sealing effect, the profit in valve body 4 is all flowed out, prevents the profit remained from making sample valve generation frozen block.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, its valve body 4 is tubular structure, left end arranged outside has the male thread matched with screw thread in threaded joint 2, to be threaded with threaded joint 2, inside right-hand member, be provided with internal thread, to be threaded with valve body gland 6.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, the middle part of its valve body gland 6 is processed with trapezoidal thread through hole, the middle right part of valve rod 5 is provided with the trapezoidal external screw thread matched with trapezoidal thread through hole, to realize moving axially of valve rod 5, thus drive moving axially of piston 3.
Particularly, the piston type antifreezing sampling valve that the utility model embodiment provides, its handwheel 7 comprises: annular handwheel rotating disk and handwheel pressure cap 701, handwheel rotating disk is cirque structure, the tapped through hole matched with valve rod 5 right-hand member is provided with in the middle part of handwheel rotating disk, valve rod 5 is through the tapped through hole of hand runner dish, and be threaded with handwheel rotating disk, handwheel pressure cap 701 is threaded with valve rod 5, handwheel rotating disk is coordinated with valve rod 5 and is fixed into entirety, thus the movement of valve rod 5 and piston 3 is realized by the rotation of handwheel 7, realize the keying of sample valve.More specifically, rotate handwheel 7, when piston 3 moves to right, sample valve is opened, and profit moves to right from probe tube 9 along piston 3 and flows out.Due to the existence of piston packing 8 between piston 3 cylindrical body 301 and valve body 4 inner chamber, profit can not enter in the non-admission chamber on the right side of valve body 4 piston 3.When piston 3 moves to left, sample valve cuts out, and the profit in valve body 4 chamber is squeezed out valve pocket, and after piston 3 runs to high order end, piston 3 left side is pressed on the valve seals 10 on valve body 4 end face, reaches double sealing effect.Therefore, after closing sample valve, do not retain liquid in valve body 4, thus prevent the frozen block of sample valve.
The foregoing is only preferred embodiment of the present utility model; not in order to limit protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a piston type antifreezing sampling valve, comprising: threaded joint, piston, valve body, valve rod, handwheel, valve body gland, probe tube, piston packing, valve seals;
Described threaded joint one end is welded on well head oil return pipeline, and the other end is threaded with the left end of described valve body, and the right-hand member of described valve body is threaded with described valve body gland;
Described piston is positioned at described body cavity, and it is outside that described handwheel is positioned at described valve body, and the left end of described valve rod is welded on the right-hand member of described piston, and right-hand member is threaded with described handwheel, and middle right part is threaded with described valve body gland;
Described probe tube is welded on the sidewall of described valve body left end, and with the inner space of described valve body;
Described piston packing is closely sleeved on described piston, and seals with described valve interior wall and contact;
Described valve seals is arranged in the inner chamber of described valve body left end, and seals with the left side of described piston and contact.
2. piston type antifreezing sampling valve according to claim 1, is characterized in that, described threaded joint is the short circuit head with interior screw thread, and axial length is 15-25mm;
The left end of described threaded joint is welded on described oil return pipeline with embedded, and be threaded with described valve body left end inside right-hand member, middle part is provided with taper sedimentation hole.
3. piston type antifreezing sampling valve according to claim 2, is characterized in that, described piston comprises: connect in turn and the cylindrical body arranged with one heart, cylindricality end and tapered end;
The diameter of described cylindricality end is less than the diameter of described cylindrical body, and described tapered end coordinates with described taper sedimentation hole and contacts.
4. piston type antifreezing sampling valve according to claim 3, is characterized in that, described piston packing is 2, is set in the cylindrical body of described piston.
5. piston type antifreezing sampling valve according to claim 4, is characterized in that, the difference of the diameter of described cylindrical body and the diameter of described body cavity is less than 1mm.
6. piston type antifreezing sampling valve according to claim 5, is characterized in that, described valve seals seals with the left side of described cylindrical body and contacts.
7. piston type antifreezing sampling valve according to claim 1, it is characterized in that, described valve body is tubular structure, and left end arranged outside has the male thread matched with screw thread in described threaded joint, internal thread is provided with, to be threaded with described valve body gland inside right-hand member.
8. piston type antifreezing sampling valve according to claim 1, is characterized in that, the middle part of described valve body gland is processed with trapezoidal thread through hole, and the middle right part of described valve rod is provided with the trapezoidal external screw thread matched with described trapezoidal thread through hole.
9. piston type antifreezing sampling valve according to claim 1, is characterized in that, described handwheel comprises: annular handwheel rotating disk and handwheel pressure cap;
Described handwheel rotating disk is threaded with the right-hand member of described valve rod by described handwheel pressure cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650416.8U CN205025427U (en) | 2015-08-26 | 2015-08-26 | Piston sample valve that prevents frostbite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650416.8U CN205025427U (en) | 2015-08-26 | 2015-08-26 | Piston sample valve that prevents frostbite |
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| Publication Number | Publication Date |
|---|---|
| CN205025427U true CN205025427U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520650416.8U Active CN205025427U (en) | 2015-08-26 | 2015-08-26 | Piston sample valve that prevents frostbite |
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| CN (1) | CN205025427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424364A (en) * | 2017-08-31 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of well mouth of oil well sampler and decompressor and sampling method |
-
2015
- 2015-08-26 CN CN201520650416.8U patent/CN205025427U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424364A (en) * | 2017-08-31 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of well mouth of oil well sampler and decompressor and sampling method |
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