CN219301874U

CN219301874U - Pressure testing device for plugging tee pipe fitting

Info

Publication number: CN219301874U
Application number: CN202320252493.2U
Authority: CN
Inventors: 李春江; 张青先; 马海昌; 张学良; 杨杰; 李传达
Original assignee: Beijing Jin Shi Wan Pipeline Technique Co ltd
Current assignee: Beijing Jin Shi Wan Pipeline Technique Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-07-04
Anticipated expiration: 2033-02-20

Abstract

The utility model provides a shutoff tee bend pipe fitting pressure testing device comprises general pressure testing jar, special transition mould and the pump of beating, general pressure testing jar top center department sets up the trompil, special transition mould comprises a plurality of dies, the top center department of every die sets up the inlet opening, shutoff tee bend pipe fitting passes through fastening chain and is connected with general pressure testing jar and special transition mould, shutoff tee bend pipe fitting, general pressure testing jar communicates each other with the trompil of special transition mould three, the internal and external surface coating sealing rubber of the die of special transition mould respectively, the delivery port of the pump of beating links to each other with general pressure testing jar through the check valve, general pressure testing jar bottom sets up the drain valve. The device has a simple and compact structure, can carry out the hydraulic test after the three parts of the plugging tee pipe fitting, the general pressure test tank and the special transition die are fastened by means of the fastening chain, is convenient and efficient, and can avoid the waste of pipe sections, the welding process and the secondary machining process.

Description

Pressure testing device for plugging tee pipe fitting

Technical Field

The utility model relates to the technical field of pipeline high-pressure plugging, in particular to a pressure testing device for plugging a three-way pipe fitting.

Background

In the use process of the oil gas transportation pipeline, the pipeline is partially corroded, deformed or damaged due to self or external factors and the like, so that potential safety hazards of the pipeline are generated, pipeline plugging pieces are required to be welded when hidden danger sections are maintained or replaced in the prior art, the plugging three-way pipe fitting is a common pipeline plugging piece, the pipeline is continuously conveyed, the pipeline is welded on a official road under the condition that the pipeline is leaked or damaged when the special three-way pipe fitting for plugging the hole is continuously conveyed, then the damaged section is plugged by means of a tapping machine and a sandwich valve, bypass transportation is started, and the special three-way pipe fitting for plugging is sealed after the maintenance or replacement is completed. The concrete construction process is that firstly, two plugging tee pipe fittings are welded on an operation pipeline, two air sac tee joints are arranged, a clamping plate valve (a special valve) is additionally arranged on the plugging tee pipe fittings, a tapping machine is arranged on the clamping plate valve, thus, the tapping machine, the clamping plate valve and the tee joint form a closed cavity, then, a power source (hydraulic pressure) is utilized for carrying out full-closed tapping, and a cut saddle-shaped plate is randomly taken out, so that the tapping process with pressure is completed. After the clamping plate valve is closed, the tapping machine is dismantled, the bypass is installed, after the clamping plate valve is opened, the pipeline is normally conveyed, and meanwhile, the damaged section pipeline is maintained or replaced.

The special tee pipe fitting of shutoff needs to possess sealing property, need weld it in the factory on with the specification body in traditional production technology and carry out the pressure testing, the shutoff tee pipe fitting of different specifications needs to be equipped with the body of suitable specification respectively, consequently, the enterprise needs to consume a large amount of steel pipes, the length direction of shutoff tee pipe fitting needs to reserve the size simultaneously, also need weld it on the body in the test process, need secondary cutting and machining after the test is accomplished, consequently, the gas tightness test process is very loaded down with trivial details, processing cycle is long moreover, manpower and materials input is many, production efficiency is also very unsatisfactory.

Disclosure of Invention

The utility model provides a pressure testing device for a plugging three-way pipe fitting, which solves the problems of complex working procedure, high investment of manpower and material resources and low production efficiency of the air tightness pressure testing work of the plugging three-way pipe fitting in the prior art.

The technical scheme adopted for solving the technical problems is as follows:

a pressure testing device for plugging a three-way pipe fitting comprises a general pressure testing tank, a special transition die and a pressure water pump, wherein an opening is formed in the center of the top of the general pressure testing tank, the special transition die comprises a plurality of dies, a water inlet is formed in the center of the top of each die, the plugging three-way pipe fitting is connected with the general pressure testing tank and the special transition die through a fastening chain, the openings of the plugging three-way pipe fitting, the general pressure testing tank and the special transition die are mutually communicated, sealing rubber is coated on the inner surface and the outer surface of the dies of the special transition die respectively, a water outlet of the pressure water pump is connected with the general pressure testing tank through a one-way valve, and a water drain valve is arranged at the bottom of the general pressure testing tank.

The special plugging transition mold consists of a plurality of mold pieces with different specifications, and the adjacent mold pieces are connected through bolts with staggered positioning pins and positions.

The thickness of rubber coated on the inner surface and the outer surface of the special transition mold piece for plugging is 3 mm.

The size of the water inlet of the special transition mold piece for plugging is phi 120 mm.

When the device is used, the special transition mould for plugging is firstly reasonably adjusted according to production requirements, then the tee pipe fitting, the general pressure test tank and the special transition mould for adapting are fixedly connected through the fastening chain, the water drain valve is closed, and the pressurizing water pump is opened to start pressure test. After the pressure test is finished, opening water discharge, pressure relief and water discharge, and then sequentially removing all the parts.

The device provided by the utility model has a simple and compact structure, and can carry out the hydraulic test after the three parts of the plugging tee pipe fitting, the general pressure test tank and the special transition die are fastened by means of the fastening chain, so that the device is convenient and efficient, can avoid the waste of pipe sections, the welding process and the secondary machining process, and has the advantage of high efficiency and saving.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic front view of the apparatus of the present utility model;

FIG. 2 is a schematic side view of the apparatus of the present utility model;

FIG. 3 is a schematic front view of a device-specific transition mold of the present utility model;

FIG. 4 is a schematic front view of a device die of the present utility model;

fig. 5 is a schematic top view of a device die of the present utility model.

In the figure, a three-way pipe fitting is blocked 1, a fastening chain is 2, a special transition die is 3, a general pressure test tank is 4, a one-way valve is 5, a pressure water pump is 6, a water drain valve is 7, a locating pin is 8, a bolt is 9, a die is 10, and a water inlet is 11.

Description of the embodiments

As shown in fig. 1 and 2, the pressure test device for plugging the three-way pipe fitting comprises a special transition die 3, a general pressure test tank 4 and a pressurizing water pump 6; an opening is formed in the center of the top of the universal pressure test tank 4, a water inlet one-way valve 5 is arranged at the side end of the universal pressure test tank 4, and a water drain valve 7 is arranged at the bottom of the universal pressure test tank 4; the special transition mould 3 consists of a plurality of mould plates 10, wherein a water inlet 11 is arranged at the center of the top end of each mould plate 10 and is positioned and connected with a bolt 9 in a staggered manner through a positioning pin 8. The shutoff tee bend pipe fitting 1, general pressure testing jar 4 carries out fixed connection through fastening chain 2 with special transition mould 3, shutoff tee bend pipe fitting 1, general pressure testing jar 4 communicates each other with special transition mould 3 three trompil, because the internal and external surface of die 10 has wrapped up in respectively one deck rubber when the three is connected, can guarantee sealed well, the pressure testing in-process is through pressing water pump 6 and is injected with water, the pressure release drainage through water drain valve 7 after the pressure testing is ended, the whole process need not welded fastening, also need not to consume the body of multiple specification, consequently, not only can effectual promotion work efficiency, but also can furthest practice thrift manual work and test cost.

As shown in fig. 1 and 2, the water injection end of the universal pressure test tank 4 is provided with a one-way valve 5, the bottom end of the universal pressure test tank 4 is provided with a water drain valve 7, and the two valves control the water in the tank body to enter and exit, so that the operation convenience of the equipment can be improved, and the post maintenance of the 4 universal tank body is facilitated.

As shown in fig. 3, the special plugging transition die 3 is composed of a plurality of dies 10, and the dies 10 are connected through bolts 9 with staggered positioning pins 8, so that the universal pressure test tank 4 can be suitable for plugging three-way pipe fittings 1 with various specifications and sizes.

As shown in fig. 3 and 4, the special transition mold 3 is composed of a plurality of mold plates 10, a water inlet 11 is arranged at the center of the top end of each mold plate 10, and the inner and outer surfaces of the mold plates 10 are respectively coated with a layer of rubber without adding a sealing gasket.

As shown in fig. 4, the inner and outer surfaces of the die sheet 10 of the dedicated transition die are preferably coated with rubber having a thickness of 3 mm, thereby securing the sealability.

As shown in fig. 4, the center of the top end of the die sheet of the special transition die 3 is provided with a phi 120 mm water inlet hole 11, and the size of the water inlet hole is matched with the internal structure of the plugging tee pipe fitting 1.

The device of the utility model is used when: firstly, a special transition mould 3 for plugging is reasonably adjusted according to production requirements, then a tee pipe fitting 1, a general pressure test tank 4 and the special transition mould 3 for adapting are fixedly connected through a fastening chain 2, a water drain valve 7 is closed, and a pressurizing water pump 6 is opened to start pressure test. After the pressure test is finished, 7 water is discharged, pressure relief and water discharge are started, and then all the parts are removed in sequence.

Claims

1. A pressure testing device for plugging a three-way pipe fitting is characterized by comprising a general pressure testing tank, a special transition die and a pressure water pump, wherein an opening is formed in the center of the top of the general pressure testing tank, the special transition die comprises a plurality of dies, a water inlet is formed in the center of the top of each die, the plugging three-way pipe fitting is connected with the general pressure testing tank and the special transition die through a fastening chain, the openings of the plugging three-way pipe fitting, the general pressure testing tank and the special transition die are mutually communicated, sealing rubber is coated on the inner surface and the outer surface of the die of the special transition die respectively, a water outlet of the pressure water pump is connected with the general pressure testing tank through a one-way valve, and a water drain valve is arranged at the bottom of the general pressure testing tank.

2. The plugging tee pipe fitting pressure test device according to claim 1, wherein the special plugging transition die consists of a plurality of dies with different specifications, and adjacent dies are connected through bolts with staggered positioning pins.

3. The pressure test device for plugging the three-way pipe fitting according to claim 1, wherein the thickness of rubber coated on the inner surface and the outer surface of the special-purpose transition die piece for plugging is 3 mm.

4. The pressure test device for plugging the three-way pipe fitting according to claim 1, wherein the size of the water inlet of the special-purpose transition mold piece for plugging is phi 120 mm.