CN2263196Y

CN2263196Y - Freeze-proofing theft-proof pressure testing device for oil well

Info

Publication number: CN2263196Y
Application number: CN 96212870
Authority: CN
Inventors: 郑雪祥; 王瑜珑
Original assignee: Site Logging Instrument Co Ltd Daqing High And New Technological Industry De
Current assignee: Site Logging Instrument Co Ltd Daqing High And New Technological Industry De
Priority date: 1996-05-28
Filing date: 1996-05-28
Publication date: 1997-09-24
Anticipated expiration: 2006-05-28

Abstract

The utility model relates to a freeze-proof theft-proof pressure testing device for oil and water wells of an oil field. The freeze-proof theft-proof pressure testing device for oil and water wells of an oil field fundamentally solves the problems that a pressure testing gauge is stolen, and the pressure testing gauge is frozen to be damage in a cold area; meanwhile, the precision of pressure reading is enhanced. The freeze-proof theft-proof pressure testing device is characterized in that a gauge joint 1 and a pressure ring 4 are assembled at both ends of a pressure guide rod 2 by shaft shoulders to form an upper joint. When pressure is tested, the upper joint and a concave valve seat 6 are connected by the pressure ring 4 through threads, wherein, a valve rod 7 in the concave valve seat is contacted with the pressure guide rod 2 of which the center is provided with a thin hole in the upper joint. The upper joint is disassembled in normal production, and is assembled when the pressure is tested, which ensures that the pressure testing device can not be frozen and lost, and the pressure testing data have high precision.

Description

Oil-water well freezing-proof theft-proof pressure tester

The utility model relates to pressure tester on a kind of oil field oil, the well, belongs to movable pressure gauge joint.

At present, on the pipeline of oil-water well, need setting pressure table admission data on the oil field.The oil-water well that is located in the cold district oil field often takes place freezing and pressure meter is lost phenomenon, though occurred the piston type pressure gauge pressure tester on the market in succession, patented technology as the patent No. 932022596, because pressure measurement is transmitted pressure by piston, the frictional force of keeping away between unavoidable piston and sealing surface exists, make pressure measurement inaccurate, influence the admission of oil-water well PRESSURE DATA.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of oil-water well pressure measurement accurately, the pressure tester of easily assembling, fundamentally solved manometric freezing, lose and the problem of accuracy of reading.

The purpose of this utility model can reach by the following technical programs: the pilot bar two ends that are made of valve seat, valve rod and meter connector form top connection with shaft shoulder loader table joint and pressure ring; During pressure measurement, top connection is by the pressure ring matrix valve seat that is threaded, and wherein the valve rod in the valve seat has the pilot bar of pore to contact with the interior center of top connection.

Above-mentioned valve rod connects spring terminal and is assemblied in valve base cavity with the shaft shoulder, and the shaft shoulder place of valve rod seals with ＂ O ＂ RunddichtringO, and block with jump ring the spring lower end.

The utility model has following advantage than prior art: since during pressure measurement valve seat by the pressure ring meter connector that is threaded, valve rod has the pilot bar of pore to contact with the center, having changed original is by pore liquid pilot by piston transmission pressure, the pressure measurement precision improves, pressure measurement finish unload pressure ring together with the table together unload, it is freezing and lose problem fundamentally to solve pressure meter, helps saving.

Fig. 1 is the utility model structure chart;

Fig. 2 unloads the structure chart of back (not pressure measurement) for the utility model.

The utility model is described in further detail below in conjunction with accompanying drawing:

Show that by Fig. 1 pilot bar 2 two ends form top connection with shaft shoulder loader table joint 1 and pressure ring 4, place the pilot bar 2 in meter connector 1 and the pressure ring 4 to have the scrobicular ring that ＂ O ＂ RunddichtringO (3,5) is arranged in pairs or groups mutually and sealed, to prevent leak of liquid; Valve rod 7 in the matrix valve seat 6 connects spring 9 ends and is assemblied in valve seat 6 chambeies with the shaft shoulder, and spring 9 lower ends are stuck in spring 9 in the chamber with jump ring 10, and the shaft shoulder place of valve rod 7 seals with ＂ O ＂ sealing ring 8.For realizing pressure measurement, pressure meter is contained on the meter connector 1, during pressure measurement, top connection is by pressure ring 4 valve seat 6 that is threaded, and the valve rods 7 in this moment valve seat 6 have the pilot bar 2 of pore to contact with the interior center of top connection; When pressure measurement finishes, unload pressure ring 4, top connection and valve seat 6 break away from.

During actual the use, valve seat 6 bottoms are linked to each other with the original joint of well head pressure tap by screw thread, when pressure measurement not (showing) as Fig. 2, spring 9 upwards holds out against valve rod 7, ＂ O ＂ RunddichtringO 8 and valve seat 6 inner sealing surface fitted seal on the valve rod 7, in case the profit seepage, valve is in closed condition; When pressure measurement, (show) as Fig. 1, top connection is tightly lived valve seat 6 by pressure ring 4 screw threads, pressure ring 4 drives the interior pilot bar 2 of top connection and moves down, the ＂ O ＂ RunddichtringO 5 of pilot bar 2 enters in the valve seat 6 and seals with valve seat 6 sealing surfaces, and valve rod 7 tops are withstood in pilot bar 2 lower ends simultaneously, and spring 9 is compressed, ＂ O ＂ RunddichtringO 8 on the valve rod 7 leaves sealing surface, entered valve seat 6 chambeies by measuring pressure, pressure enters meter connector 1 inner chamber by the pore of pilot bar 2, measures pressure reading; Pressure measurement finishes, unload pressure ring 4, because pilot bar 2 two ends are with shaft shoulder loader table joint 1 and pressure ring 4, this moment, pressure ring 4 shackle processes were gone ahead meter connector 1 and pilot bar 2 simultaneously top, when the center of pilot bar 2 pore leaves valve rod 7, spring 9 is upheld, the sealing surface that ＂ O ＂ RunddichtringO 8 reenters valve seat 6 matches, valve is in closed condition, top connection is recoverable, avoid pressure tester (comprising pressure meter) to lose, simultaneously pressure meter is unlikely freezing, has both made in the pore of meter connector 1 and pilot bar 2 centers when pressure measurement and has charged into noncongeable oil, and also unlikely pressure guiding system is freezing in the pressure measurement process, fundamentally solve the freezing of pressure tester, lose and the inaccurate problem of pressure reading precision.

Claims

1. one kind relates to oilfield oil well freezing-proof theft-proof pressure tester, comprises valve seat (6), and meter connector (1) is characterized in that: pilot bar (2) two ends form top connection with shaft shoulder loader table joint (1) and pressure ring (4); During pressure measurement, top connection is by pressure ring (4) the spill valve seat (6) that is threaded, and wherein the valve rod (7) in the valve seat (6) has the pilot bar (2) of pore to contact with the interior center of top connection.

2. pressure tester according to claim 1 is characterized in that: valve rod (7) connects spring (9) end and is assemblied in valve seat (6) chamber with the shaft shoulder.

3. pressure tester according to claim 1 is characterized in that: the shaft shoulder place of valve rod (7) seals with ＂ O ＂ RunddichtringO (8).

4. pressure tester according to claim 1 and 2 is characterized in that: block with jump ring (10) spring (9) lower end.