CN2358222Y - Sampling multipurpose valve in well head - Google Patents

Abstract

The utility model relates to a novel valve used for the installation of a simple well mouth in an oil field. The utility model can replace a check valve, a stop valve, a sampling valve, a pressure measuring valve and a well mouth exhaust valve which are used at present. The utility model is characterized in that the utility model is composed of a main valve body, a sampling (pressure measuring) valve body, a needle-shaped valve rod, a sampling (pressure measuring) valve cover, a check (stop) valve core, a valve rod, a valve cover, a pressing cover and a flange. The sampling valve, the pressure measuring valve, a sealing band of the valve body, and a sampling (pressure measuring) passage are positioned at the center of a main valve passage or next to the main valve passage, which prevents liquid from being frozen. Because the check valve and the stop valve use one valve core, and operations for obtaining a sample and measuring pressure use one passage and one needle-shaped valve rod, the valve has two functions. The versatility of each valve is enhanced, the investment is reduced, the incidence rate of a fault is reduced, and the management and the maintenance are more convenient.

Description

Wellhead sampling is used valve more

The utility model relates to a kind of novel valve that the oil field simple wellhead is installed that is used for, and it can substitute ball-and-seat, stop valve, sample valve, pressure valve and the well head outlet valve of present use.

The oil field production tree in oil recovery process, need have a plurality of valves control the production tree crude stream to and output.The well head casing pressure just will directly influence the down-hole liquid level position, and therefore, the accuracy of well head pressure at expulsion will have a direct impact the crude output of production tree.At present, well head is installed and is all adopted discrete component.The well head outlet valve adopts the aciculiform high pressure valve, regularly drains in atmosphere.So not only be difficult to pressure reduction between control well muzzle pipe and oil pipeline, and a large amount of natural gases can not be recycled because of emptying, caused the waste of the energy, single current, the mode that all adopts welding to combine with Bolt Connection by, sampling, pressure valve make up, prolonged oil pipeline not only meaninglessly, increase construction working amount and Winter protection measure, and used element does not all have antitheft and anti-destruction measure, often go to pot in outlying oil field, even in the well head work progress, have during valve element stolen phenomenon to take place, give to administer and maintain and brought great inconvenience.

In view of this, the existing discrete component of well head is combined, not only has the antitheft and anti-destructive of crude oil, and it is simple in structure, under the situation that workinprocess cost does not increase, substitute with regard to available single valve, to increase work efficiency and managerial skills, the motivation place of the utility model development just.

At the deficiencies in the prior art, the purpose of this utility model is a kind of oil recovery needs that can satisfy simple wellhead on performance of design, and is similar with existing valve on profile and volume, and has the novel wellhead sampling of combined type antifreeze, anti-theft feature and use valve more.

The purpose of this utility model can reach by the following technical programs:

A kind of wellhead sampling of the utility model is used valve more, it is characterized in that ending spool, valve rod, valve gap, gland and flange by main valve body, sampling (pressure measurement) valve body, aciculiform valve rod, sampling (pressure measurement) valve gap, single current (cutting) constitutes; One fluid passage is arranged on the main valve body, Duan Youyi cone seal band therebetween, what be mated is single current (ending) spool; On single current (ending) spool a threaded valve rod is arranged, this valve rod and spool carry annexation, have on the core and stretch into the guide peg that valve rod restriction single current (ending) spool moves radially, bonnet lower connects sealing by bolt with main valve body, the airtight and watertight padding on valve gap top is pushed valve valve stem seal by gland; At the valve channel front end two screwed circular holes are arranged, its perpendicular screwed hole is sampling (pressure measurement) passway, and horizontal screwed hole is the connection holes of sampling (pressure measurement) valve; Sampling (pressure measurement) valve body has inside and outside two kinds of screw threads, it stretches into main valve body passage 1/2 place by external screw thread and connects with main valve body, cooperate with the aciculiform valve rod with screw thread, tapered and sampling (pressure measurement) valve body bellmouth fitted seal of aciculiform valve rod front end, the rear end is the rib body, and the assembling Tsang is in sampling (pressure measurement) valve gap; The perpendicular screwed hole that sampling (pressure measurement) valve body front end has a small sircle hole to aim at main valve body constitutes sampling (pressure measurement) passage jointly.Above-mentioned single current (ending) spool and valve rod are split, and single current (ending) spool is not done to rise with valve rod and moved.Have one on above-mentioned sampling (pressure measurement) mouth and connect manometric internal thread.In the not bottom portion ladder circular hole of above-mentioned main valve body exhaust back-moving spring and ball core and constant pressure exhaust valve body are arranged, the flange with pipeline welding usefulness is arranged on the two ends of main valve body and constant pressure exhaust valve, flange is connected with main valve body by hexagon socket head cap screw with main valve body; Like this, both be convenient to the field-strip of valve, hexagon socket head cap screw has stoped the destruction of pilferage property again.

The utility model integral body is connected by main valve body, and simple installation compared with prior art has: because ball-and-seat and the shared valve of stop valve, when valve rod during in the enable possition, the spool guide peg can move freely in valve rod, and this valve just becomes the ascending/decending ball-and-seat; When valve rod place closed condition, spool is propped up and can not open by valve rod, and this valve just becomes stop valve.So the utlity model has a valve, two kinds of functions: for sampling and pressure valve, valve seal band and sampling (pressure measurement) passage in main valve passage central authorities or near the main valve passage, prevented that liquid from freezing, and aciculiform bar rib body is hidden in the valve gap, random unlatching and dismounting have been stoped, and because sampling and shared passage of pressure measurement and aciculiform valve rod, so this valve also has two kinds of effects, the versatility of this each valve, both reduced investment, reduced rate of breakdown again, be more convenient for administering and maintaining.

Further illustrate the utility model below in conjunction with accompanying drawing and preferred embodiment.

Fig. 1 is the cut-away view of the utility model structure.

Fig. 2 is a phantom of the present utility model.

1 main valve body, 11 valve rods, 21 sampling (pressure measurement screw thread) mouths

2 main channels, 12 pits, 22 sealing awls

3 hexagon socket head cap screws, 13 cone seal bands, 23 bands

4 big flange 14 passages 24 valve rod holes

15 O RunddichtringOs, 25 ladder circular holes

6 single currents (ending) core, 16 sampling (pressure measurement) valve bodies, 26 back-moving springs

7 guide pegs, 17 aciculiform valve rods, 27 ball cores

8 valve seats, 18 sampling (pressure measurement) valve gaps, 28 constant pressure exhaust valve bodies

9 fillers, 19 screwed holes, 29 little flanges

10 glands, 20 sampling (pressure measurement) passway circular holes

The utility model is by main valve body 1, single current (ending) spool 6, guide peg 7, valve gap 8, gland 10.Valve rod 11, sampling (pressure measurement) valve body 16, aciculiform valve rod 17, sampling (pressure measurement) valve gap 18, sampling (pressure measurement) screw thread mouth 21, back-moving spring 26, ball core 27, constant pressure exhaust valve body 28, little flange 29 are composited.Fluid passage 2 is arranged on the main valve body 1, there are vertical sampling (pressure measurement) passway 20 and level sampling (pressure measurement) valve body that screwed hole 19 is installed at passage 2 leading portions, in passage 2 stage casings cone seal band 13 is arranged, at passage 2 latter ends shoulder hole 23 is arranged, cooperate a spherical single current (ending) spool 6 at the cone seal band, guiding guide rod 7 valve rod holes 24 of spool cooperate, valve rod 11 cooperates with valve seat 8 by left-handed ' T type ' screw thread, valve seat 8 connects by bolt 3 with main valve body 1, stuffing-box on the valve seat 8 is equipped with filler 9, filler 9 compresses and sealed valve stem 11 by gland 10, and a pit 12 is arranged on the gland, when this valve rod place low level and the upper end of valve rod 11 12 li of pits, valve rod 11 non-special tools and can not operate and open valve rod 11 have played tamper-proof effect.Sampling (pressure measurement) valve body 16 connects with main valve body 1 by screwed hole 19, and the inlet of sampling (pressure measurement) passage 14 occupies the central authorities of main channel 2, the leading portion of aciculiform valve rod 17 has sealing awl 22 to cooperate with band 23, latter half of screw thread cooperates with sampling (pressure measurement) valve body 16, terminal rib body is hidden in 18 li of sampling (pressure measurement) valve gaps, and sampling (pressure measurement) valve gap 18 connects by screwed hole 19 with main valve body 1.Sampling (pressure measurement) valve body 16 has a circular hole 20, and it communicates with the screwed hole 21 of main valve body.Like this, when sampling, open aciculiform valve rod 17 with special tool, liquid flows out main valve bodies 1 along passage 14 and circular hole 20 from sampling (pressure measurement) mouth 21; When pressure measurement, pressure meter is screwed in sampling (pressure measurement) screw thread mouth 21, open aciculiform valve rod 17, liquid enters pressure meter along passage 14 and circular hole 20 and drives.For sampling or pressure measurement process, because band 23 is in main channel 2, prevented that liquid freezes in the passage 14, even in sampling or pressure measurement process, have liquid remaining, because sampling (pressure measurement) mouth will be discharged to sampling (pressure measurement screw thread) mouthful outside by action of gravity vertically downward.25 li of main valve body end bottom ladder circular holes, outlet valve back-moving spring 26 is housed, ball core 27 and constant pressure exhaust valve body 28.When the pressure (being ball core and back-moving spring chamber pressure) in well head ring set internal pressure (being ball core forefront pressure) and the petroleum pipeline during greater than a certain particular value (pre-compression force of design back-moving spring), ball core 27 is just opened by the gas of front end (the well head ring set is interior) and is carried out pressure release; When ball core 27 front ends and rear end side pressure reduction during less than the back-moving spring pre-compression force, ball core 27 is closed, and has stoped the backflow of liquid in the pipeline.The main valve body 1 of this valve has with the big flange 4 of pipeline welding usefulness and is connected with valve by hexagon socket head cap screw 3, pressure valve also has with the little flange 29 of pipeline welding usefulness and is connected with the constant pressure exhaust valve by bolt 3, the syndeton of this flange and hexagon socket head cap screw not only helps demolition and maintenance but also prevented the malice dismounting.

In sum, this is novel to utilize simple structure design, makes the oil recovery needs that can satisfy simple wellhead on this novel performance, similar with existing valve on profile and volume, and has the novel wellhead sampling of combined type antifreeze, anti-theft feature and use valve more.Obviously originally novel is the new design of a kind of novelty, progress and dark tool practicality.The above is this novel specific embodiment and the know-why of being used, the equivalence that the novel conception of Ruo Yiben is done changes, when the function that it produced does not exceed spiritual that manual and accompanying drawing contain yet, all should be in this novel scope, explanation hereby.

Claims (4)

1, a kind of wellhead sampling is used valve more, it is characterized in that being made of by spool, valve rod, valve gap, gland and flange main valve body, sampling pressure measurement valve body, aciculiform valve rod, sampling pressure measurement valve gap, single current; One fluid passage is arranged on the main valve body, Duan Youyi cone seal band therebetween, what be mated is that single current ends spool; Single current has a threaded valve rod on spool, this valve rod and spool carry annexation, have on the core and stretch into valve rod restriction single current stop valve core diameter to the guide peg that moves, bonnet lower connects sealing by bolt with main valve body, the airtight and watertight padding on valve gap top is pushed valve valve stem seal by gland; At the valve channel front end two screwed circular holes are arranged, its perpendicular screwed hole is a sampling measuring pressure passage mouth, and horizontal screwed hole is the connection holes of sampling pressure valve; Sampling pressure measurement valve body has inside and outside two kinds of screw threads, it stretches into main valve body passage 1/2 place by external screw thread and connects with main valve body, cooperate with the aciculiform valve rod with screw thread, aciculiform valve rod front end tapered with sampling pressure measurement valve body bellmouth fitted seal, the rear end is the rib body, and the assembling Tsang is in sampling pressure measurement valve gap; The perpendicular screwed hole that sampling pressure measurement valve body front end has a small sircle hole to aim at main valve body constitutes the sampling measuring pressure passage jointly.

2, wellhead sampling according to claim 1 is used valve more, it is characterized in that single current ends spool and valve rod is split, and single current is not done to rise with valve rod by spool and moved.

3, wellhead sampling according to claim 1 is used valve more, has one on the pressure tap that it is characterized in that taking a sample and connects manometric internal thread.

4, wellhead sampling according to claim 1 is used valve more, and it is characterized in that has exhaust back-moving spring and ball core and constant pressure exhaust valve body in the not bottom portion shoulder hole of main valve body.

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