CN2448921Y - Plunger piston type hydraulic pressure valve - Google Patents

Abstract

The utility model relates to a plunger piston type ball throwing valve which has functions for taking samples, measuring pressure and preventing theft. A plunger piston (7) is arranged in a valve body (5) of the plunger piston type ball throwing valve. A cylindrical hole, a pressure measuring hole, an annular channel and a triple O-shaped sealing ring which can prevent crude oil from leaking in the process of throwing a ball are arranged on the plunger piston. A ball throwing opening (14) and a sampling pipe (6) are arranged on the valve body. A trapezoidal screw rod is rotated, which drives the plunger piston to axially move. The plunger piston is positioned at different positions, and different functions can be completed. An end cover (2) and the valve body (5) of the plunger piston type ball throwing valve are riveted together with a rivet, and therefore, the utility model has a good performance for preventing theft. The operation for throwing a ball of the utility model is simple, and a user only needs to rotate a handle. Because the utility model simultaneously has functions for taking samples and measuring pressure, well head equipment for extracting oil is simplified, and leakage points of crude oil are reduced.

Description

Plunger type pitching valve

The utility model relates to a kind of oil exploitation well head that is installed on and throws in wax ball clearing, possesses the ball-throwing apparatus of sampling, pressure measurement and antitheft multiple function simultaneously.

The domestic petroleum recovery well is all at present carries out cold defeated oil field from well head to selective gathering station, because cold defeated temperature is lower, the automatic wash rice of the wax in the crude oil goes out, and needs to throw in wax ball clearing in the oil pipeline of being everlasting, to keep pipeline unimpeded for this reason.

Chinese patent 87215692 is that a kind of self-sealing launches the pitching valve, and no anti-theft feature needs oil pumper to quit work in the process of pitching and closes the back pressure gate valve.Chinese patent 9218055.2 high pressure self-sealing pitching valves, the problem of the unresolved pitching that do not stop production.Do not possess theftproof performance, the antitheft pitching valve of Chinese patent ZL95 2 129280 rotations has solved the oil well without stop product and carried out the pitching problem, but the problem of leaking in the pitching process is unresolved, because when the ball-type spool of this patent converts the pitching position to by the operating position, leakage-gap will occur.

At present the pitching valve of various ways has been promoted in the oil field, and the ubiquity function singleness in the pitching process crude oil leakage takes place, the operation that need stop production, anti-theft feature can not be worthy of the name etc. problem.

The purpose of this utility model is to provide a kind of improved and possess the plunger type pitching valve of sampling, pressure measurement, theftproof performance simultaneously.

The purpose of this utility model is achieved in that in the valve body of plunger type pitching valve plunger, post hole, garden, pressure tap and annular channel and the special seal of structure for preventing to leak are arranged on the plunger, pitching mouth and probe tube are arranged on the valve body, drive plunger by trapezoidal screw, plunger is in different positions, finishes different functions.

The utility model pitching is simple to operate, only needs to rotate a handle and gets final product, owing to have sampling and pressure measurement function, has simplified wellhead for production.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the structural representation sectional drawing according to the plunger type pitching valve that the utility model proposes.

Describe the details and the course of work in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 according to the concrete structure that the utility model proposes.

As shown in Figure 1, the utility model comprises and rotary handle all-in-one-piece nut sleeve (1), and end cap (2) is contained in the antirotation keys (3) in the end cap, and end cap and valve body (5) are linked together by rivet (4); The bottom of pitching mouth (13) is equipped with probe tube (6) on the valve body; One end of plunger (7) has the screw rod that matches with nut sleeve (1), the other end is equipped with quick coupling (10), the detachable end of quick coupling (standard component of market supply) is equipped with pressure measurement pressure meter (12), aperture is arranged on the plunger, one end communicates with cylindrical hole (13) on the plunger, and the other end is connected with quick coupling; There are three places that three unique O type joint rings (11) of design are housed on the plunger (7), wax ball clearing (8) is in the operating position, to flow in the petroleum pipeline (9) with oil, by the pressure meter (12) in the snap joint (10), monitor that the pressure in the petroleum pipeline changes, also can be at any time by taking pressure meter (12) in the snap joint (10) away, have unidirectional valve will stop leak of liquid and stay on the joint on the plunger (7).End cap (2) and valve body (1) have become an integral body by a plurality of rivet rivetings of garden Zhou Junbu, have stopped unattended production wellhead, take the pitching valve apart, carry out the possibility of stolen.Clockwise rotate nut sleeve (1), the long keyway on the screw rod of plunger (7) is gone up in antirotation keys (3) and is slided, and makes in the plunger and can move axially, and do not rotate.

Fig. 2 is the amplification profile of three O type joint rings.Among the figure: the 1st, plunger, 2 is three O type joint rings.The 3rd, valve body.

Fig. 3 is that plunger is on the crossover position.Among the figure: the 1st, plunger, 2 is three joint rings, the 3rd, the crude oil in the post of plunger pitching garden, the 4th, pitching hole site, the 5th, petroleum pipeline channel position.This shows that this moment, therefore the liquid stream of petroleum pipeline can not need to stop oil pumper work by than flowing through in the little between centers crack annular channel of plunger.Simultaneously also as can be seen, filled the crude oil that pressure is arranged in the cylindrical hole on the plunger (3), and sealed by three O type joint rings of both sides by extraction in the well.Plunger continues to left movement, and the pitching mouth (4) on cylindrical hole (3) and valve body is when just being communicated with, and the highly pressurised liquid in the cylindrical hole outwards sprays, and be not ejected as being general O RunddichtringO this moment, is cut off exactly and loses efficacy.Adopt three O type joint rings because that section increases is a lot, can bear by liquid force from high pressure to the low pressure transition and remain intact.

Fig. 4 is the schematic diagram that plunger is in the pitching position.Among the figure: the 1st, plunger, 2 is three sealing rings, the 3rd, wax removal glueballs, the 4th, pitching hole site, the 5th, oil pipeline position.Plunger continues motion left, and the liquid in the cylindrical hole (4) flows into sample bucket by probe tube, and repeatable operation three times can be filled a sample bucket, per sample, in case the moisture content of chemical examination crude oil, salinity or the like.After finishing sampling wax ball clearing (3) is dropped in the interior cylindrical hole (4) of plunger (1) by the pitching mouth on the valve body.

Fig. 5 is the schematic diagram that the wax removal glueballs is in the oil pipeline position.Among the figure: the 1st, plunger, the 2nd, the pitching hole site, 3 is three joint rings, the 4th, oil pipeline position, the 5th, wax ball clearing.Be rotated counterclockwise nut sleeve, it is consistent with the oil pipeline internal diameter to cylindrical hole that plunger is moved right, and wax ball clearing 5 flows in the input channel with oil, finishes a pitching wax removal circulation.

Claims (4)

1, is installed in the oil exploitation well head, in oil pipeline, throw in wax ball clearing, and possesses sampling simultaneously, pressure measurement, antitheft multi-functional plunger type pitching valve, this valve has a nut sleeve (1) to match with screw rod on the plunger (7), nut sleeve (1) is in end cap (2), there is antirotation keys (3) to be contained in the long keyway on the screw rod of plunger (7) in the end cap (2), plunger (7) is sliding joining in valve body (5), it is characterized in that a cylindrical hole (13) is arranged on the plunger (7), a pitching mouth (14) is arranged on the valve body (5).

2, according to the described plunger type pitching of claim 1 valve, it is characterized in that on the plunger (7) the three seals groove being arranged, the piston that has separated cylindrical hole (13) and plunger end respectively, three O type joint rings are installed in the seal groove, plunger one end is a screw rod, the other end of plunger has an aperture to be communicated with cylindrical hole (13), and the end of aperture is equipped with quick coupling (10), and pressure meter (12) is installed on the union.

3, want 1 described plunger type pitching valve according to right, it is characterized in that end cap (2) and valve body (5) are with rivet (4) is arranged.

4,, it is characterized in that probe tube (6) being installed in the bottom of the pitching mouth (13) of valve body (5) according to the described plunger type pitching of claim 1 valve.

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