CN202325399U

CN202325399U - Production tree plug anti-theft device

Info

Publication number: CN202325399U
Application number: CN2011204391716U
Authority: CN
Inventors: 任世勇; 李永权; 贾强; 齐尔和; 王育南; 何晓梅; 王小龙
Original assignee: XI'AN QINGYOU PETROLEUM TECHNOLOGY Co Ltd
Current assignee: XI'AN QINGYOU PETROLEUM TECHNOLOGY Co Ltd
Priority date: 2011-11-08
Filing date: 2011-11-08
Publication date: 2012-07-11
Anticipated expiration: 2021-11-08

Abstract

The utility model provides a production tree plug anti-theft device. An anti-theft valve seat, an O type seal ring, a conical plug, a seal spring and a tray are arranged in a valve body; a conical surface is formed at the top end of a cylindrical cap at the upper part of the anti-theft valve seat; 48 flow guide holes are drilled on the side wall of the cylindrical cap and uniformly arranged in four rows; an external thread at the lower part of the anti-theft valve seat is connected with the valve body; the O type seal ring is pressed on one end surface of the anti-theft valve seat; the inner chamber of the anti-theft valve seat is a 60-degree conical valve seat hole and is in close fit with the conical plug; the conical head of the conical plug is a 60-degree conical one-way sealing valve core; the seal spring is placed in the round tube-shaped inner chamber of the conical shank of the conical plug; the tray is connected into the valve body through threads; a spring seat in the center of the tray is used for fixing the seal spring; and four flow guide holes are drilled on one end surface of the tray. Through the adoption of the production tree plug anti-theft device, the loss caused by theft, the investment, operating risk sources and the labor intensity of workers can be reduced; and effective theft prevention is realized at all the parts of a production tree.

Description

Production tree plug alarm

Technical field

The utility model relates to producing well well head production tree plug anti-theft device.

Background technology

Face serious local villager and theft gang in the oil field development and steal the crude oil incident, bring many difficulties, bring heavy losses to national resources to field control.For stoping producing well well head stolen, oil well has been installed the well head theft-proof box and has been taken precautions against pilferage, but the theft-proof box investment cost is high, and casing weighs more than 600 kilogram, and shaft mouth operation and maintenance maintenance production tree need several employee's group performances, and work is very heavy.Be easy to assemble the crude oil of denseer poisonous, fuel gas and leakage in the theft-proof box, the Secondary cases security incident happens occasionally, and jeopardizes operating personnel's life security.

The usefull space is narrow in the theft-proof box, is not easy to cleaning maintenance in the case.Later stage theftproof lock frequent breakage in addition, the line service amount is big, has a strong impact on on-the-spot standardized management.For getting rid of the well head theft-proof box, corresponding snap joint has been installed at each position of production tree, but the production tree plug has no anti-theft measure.The easier anti-theft measure of development is very important for this reason.

Summary of the invention

The purpose of the utility model provides a kind of production tree plug alarm, can reduce the pilferage loss, reduces investment, reduces the operating risk source, alleviates labor strength, effectively guards against theft in each position of realization production tree.

The technical scheme of the utility model is: a kind of production tree plug alarm; It is characterized in that being equipped with in the valve body antitheft valve seat, O RunddichtringO, tapered plug, envelope spring and pallet; The top of the cylindrical cap on antitheft valve seat top is a taper seat; On the sidewall of cylindrical cap, be drilled with 48 pod apertures, divide four rows evenly to arrange; The external screw thread of antitheft valve seat bottom is connected with valve body, and end face is pressed with the O RunddichtringO; The antitheft valve base cavity is 60 ° coniform valve base hole, cooperates with tapered plug is tight; The conehead of tapered plug is 60 ° of conical one-way sealing spools, in the tubular inner chamber of taper shank, places the envelope spring; Pallet is with being threaded in the valve body, and the spring base at pallet center is used for fixing the envelope spring, and the end face of pallet is drilled with four pod apertures.

The external pipe thread of valve body is used for connecting the plug hole of production tree, the union the when Internal Pipe Thread of valve body is used for connecting shaft mouth operation.

Junction plate upper end and oil loops welded in the ninth of the ten Heavenly Stems, the junction plate lower end is welded on the tube wall in production tree plug hole.

The utility model can satisfy operations such as on-the-spot pipeline purging, realizes anti-theft feature simultaneously, steals loss thereby reduce, and reduces investment, reduces the operating risk source, alleviates labor strength.Along with the implementation of oil field digital management, thereby optimization oil recovery field control is effectively guarded against theft at each position of realization production tree.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is an antitheft valve seat construction sketch map.

Fig. 3 is the support holder structure sketch map.

Fig. 4 is the tapered plug structural representation.

The specific embodiment

Structural principle

Production tree plug alarm is a kind of connector of similar one-way valve structures of particular design.As shown in Figure 1, valve body 8 tops have hard hat 10 with sealing ring 9 shutoff on the sealing ring 9; The external pipe thread of valve body 8 is used for connecting the plug hole of production tree; 3 welding are encircled with oil the ninth of the ten Heavenly Stems in junction plate 1 upper end, and the lower end is welded on the tube wall in production tree plug hole, and the plug alarm can not arbitrarily be dismantled.Antitheft valve seat 7, O RunddichtringO 6, tapered plug 5, envelope spring 4, pallet 2 are housed in the valve body 8, and under the pressure effect of envelope spring 4, tapered plug 5 sets, and the production tree plug hole passage that leaks is thoroughly blocked.

Union when the Internal Pipe Thread of valve body 8 is used for connecting shaft mouth operation, during operation, under the pressure effect of injecting liquid, tapered plug 5 moves down and automatic deblocking, injects liquid and gets into service line through 48 pod apertures 11 of antitheft valve seat 7.After operation was accomplished, tapered plug 5 resetted under the 4 pressure effects of envelope spring and sets.

Antitheft valve seat 7 structures are as shown in Figure 2, and the cylindrical cap on antitheft valve seat 7 tops blocks the top of tapered plug 5 fully, steals crude oil with thief-proof oily person's deblocking tapered plug 5.Taper seat is processed on the top of cylindrical cap, to reduce to inject the resistance coefficient of liquid.On the sidewall of cylindrical cap, be drilled with the pod apertures 11 of 48 ∮ 3, divide four rows evenly to arrange, inject the bigger requirement of flow quantity to satisfy.The external screw thread of antitheft valve seat 7 bottoms is connected with plug valve body 8, and end face is pressed with O RunddichtringO 6, is used for seal face, prevents former oil seepage.Inner chamber is 60 ° coniform valve base hole, can accomplish plug alarm folk prescription to sealing with 5 tight cooperations of tapered plug.

As shown in Figure 4, tapered plug 5 usefulness nylon materials are processed, and conehead 13 is 60 ° of conical one-way sealing spools, and taper shank is a tubular, and inner chamber is placed envelope spring 4, and cylindrical is used for stablizing the guiding of tapered plug 5, and tube wall has four leakage holes can reduce the sluggishness of tapered plug.

Pallet 2 usefulness are threaded in the valve body 8; Structure is as shown in Figure 3; The spring base at pallet 2 centers is used for fixing envelope spring 4, and belt hole is as the pilot hole of tapered plug 5, and end face is drilled with the pod apertures 12 of four ∮ 12; Inject the bigger requirement of flow quantity to satisfy, the external screw thread of pallet 2 can be regulated the initial setting force of envelope spring 4.

Operating principle

Production tree plug alarm is the connector with shutoff, unidirectional conducting and anti-theft feature, and it is installed on the plug hole of production tree.During normality, the tapered plug 5 of plug alarm sets under the effect of envelope spring 4 pressure, and the plug hole is blocked; During pigging pipeline purging operation, under the pressure effect of injecting liquid, tapered plug 5 automatic deblockings, the injection liquid of high-pressure high-flow can get into wax deposition fouling pipeline.Operation is accomplished, and inlet pipe pressure disappears, and tapered plug 5 sets automatically, returns to normal.Because the antitheft valve seat 7 of particular design, protected the top of tapered plug 5, stopped that stealing oily person attempts the passage of deblocking tapered plug, junction plate 1 is welded on plug and the pipeline in addition, and is on-dismountable, realized the crude oil anti-theft feature.

Technical data

The on-the-spot winter job pressure of rated pressure: 2.5MPa can reach 15MPa

Discharge capacity requires: pipeline purging operation discharge capacity 5--20m ³/ h

Alarm is long: be not more than 100mm

Claims

1. production tree plug alarm; It is characterized in that being equipped with in the valve body (8) antitheft valve seat (7), O RunddichtringO (6), tapered plug (5), envelope spring (4), pallet (2); The top of the cylindrical cap on antitheft valve seat (7) top is a taper seat; On the sidewall of cylindrical cap, be drilled with 48 pod apertures (11), divide four rows evenly to arrange; The external screw thread of antitheft valve seat (7) bottom is connected with valve body (8), and end face is pressed with O RunddichtringO (6); Antitheft valve seat (7) inner chamber is 60 ° coniform valve base hole, with tight cooperation of tapered plug (5); The conehead (13) of tapered plug (5) is 60 ° of conical one-way sealing spools, in the tubular inner chamber of taper shank, places envelope spring (4); Pallet (2) is with being threaded in the valve body (8), and the spring base at pallet (2) center is used for fixing envelope spring (4), and the end face of pallet (2) is drilled with four pod apertures (12).

2. a kind of production tree plug alarm as claimed in claim 1 is characterized in that the external pipe thread of valve body (8) is used for connecting the plug hole of production tree, the union the when Internal Pipe Thread of valve body (8) is used for connecting shaft mouth operation.

3. a kind of production tree plug alarm as claimed in claim 1 is characterized in that junction plate (1) upper end and oil ring in the ninth of the ten Heavenly Stems (3) welding, and junction plate (1) lower end is welded on the tube wall in production tree plug hole.