CN213903143U

CN213903143U - Pressure test system of welding valve and plugging device thereof

Info

Publication number: CN213903143U
Application number: CN202022942137.2U
Authority: CN
Inventors: 张�成; 邓秀林
Original assignee: Sichuan Petroleum Construction Engineering Co Ltd
Current assignee: Sichuan Petroleum Construction Engineering Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-06
Anticipated expiration: 2030-12-10

Abstract

The utility model provides a pressure testing system of welded valve and plugging device thereof, the pressure testing system includes pressure testing device, plugging device, has pump sled and the pressure testing platform of water injection pipe. The plugging device comprises a base body, a lining convex part, a sealing element and a water injection channel, wherein the lining convex part is arranged on one end face of the base body and can plug and weld a valve, the sealing element can be arranged on the periphery of the lining convex part, and the water injection channel is arranged to penetrate through the base body and a pore passage of the lining convex part; the water injection pipe of the pump pry can be communicated with the water injection port of the water injection channel; the pressure test platform has the functions of hoisting and clamping the welded valve. The utility model discloses changed traditional and carried out head welded operation to the welding valve, directly adopted prefabricated plugging device to carry out the shutoff, construction cycle is short, and it is few to occupy the resource, and the pressure testing procedure is simple, and the security is high, promotes pressure testing efficiency greatly.

Description

Pressure test system of welding valve and plugging device thereof

Technical Field

The utility model relates to a welding valve monomer pressure testing technical field in oil and gas trade station, the valve chamber construction, particularly, relate to a pressure testing system and plugging device of simple efficient welding valve of pressure testing procedure.

Background

In the field of petroleum and natural gas, according to the GB50540-2009(2012 edition) specification requirements, after appearance inspection and acceptance of a valve on site, the valve is subjected to independent pressure test one by one, and installation work can be performed after the pressure test is qualified.

The two ends of the welded valve are sleeves (straight pipe sections which are directly butted with a process pipeline) without flanges. According to the conventional construction practice, the pressure test is usually carried out by welding end sockets on site. However, the scheme needs to purchase the end socket in advance, occupies field welding data (including welding personnel, machines and tools, welding materials and the like), needs to carry out nondestructive testing after welding is finished, and has long construction waiting period. And after the pressure test is finished, the end socket needs to be cut off, and then the pipe orifice needs to be polished again. Therefore, the traditional welding end enclosure mode is adopted for pressure testing, the procedure is complicated, the construction period is long, the resource occupancy rate is high, and the pressure testing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one of the above-mentioned not enough of prior art existence. For example, an object of the utility model is to provide a pressure testing system of welded valve (for example, welded ball valve) and be used for plugging device of welded valve pressure testing to solve among the prior art pressure testing procedure loaded down with trivial details, the period of work is long, the resource occupancy is high and the problem of pressure testing inefficiency.

In order to achieve the above object, an aspect of the present invention provides a pressure test system for a welded valve, including a pressure testing device, a plugging device, a pump pry with a water injection pipe, and a pressure test platform with an axial clamping mechanism and a hoisting mechanism, wherein the plugging device includes a base, a lining protrusion, a sealing member, and a water injection channel, the lining protrusion is disposed on one end face of the base and has a shape and a size capable of plugging and plugging a sleeve of the welded valve, the sealing member is mountable on an outer periphery of the lining protrusion, the water injection channel is disposed to penetrate through a hole passage of the base and the lining protrusion and has a water injection port located on the other end face of the base; the water injection pipe of the pump pry can be communicated with the water injection port of the water injection channel; the hoisting mechanism is configured to hoist the welding valve into the axial clamping mechanism; the axial clamping mechanism is configured to be contactable with the other end face of the occlusion device.

In an exemplary embodiment of the present invention, the number of the blocking devices may be equivalent to the number of the openings of the welding valve.

In an exemplary embodiment of the present invention, the plugging device may further include a lifting lug disposed on the base body.

In an exemplary embodiment of the present invention, the base body, the lining boss and the water injection passage may be integrally formed.

In an exemplary embodiment of the present invention, the welded valve may be a welded ball valve.

In an exemplary embodiment of the present invention, the water injection port may be a threaded hole.

The utility model discloses an on the other hand provides a plugging device for welding valve pressure testing, plugging device includes base member, inside lining bellying, sealing member and water injection passageway, the inside lining bellying sets up just have on the terminal surface of base member and can fill in and the shutoff the shape and the size of the sleeve of welding valve, the sealing member can be installed in the periphery of inside lining bellying, water injection passageway is set up to the pore that runs through base member and inside lining bellying and has the water filling port that is located another terminal surface of base member.

Compared with the prior art, the beneficial effects of the utility model include: the pressure test system of the welding valve and the plugging device for pressure test of the welding valve can be provided, the traditional operation of carrying out end socket welding on the welding valve is changed, and the prefabricated plugging device is directly adopted for plugging, so that the pressure test period is greatly shortened, a large amount of welding and artificial resources are not required to be occupied, the pressure test program is simple, the safety is high, and the pressure test effect is obviously improved.

Drawings

Fig. 1 shows a schematic structural diagram of a plugging device in an exemplary embodiment of a pressure test system for welded valves according to the present invention.

The labels in the figure are:

1-a first cylindrical table, 2-a second cylindrical table, 3-a lining convex part, 4-O-shaped sealing rings, 5-lifting lugs and 6-a water injection channel.

Detailed Description

Hereinafter, the pressure test system of the welding valve and the plugging device thereof according to the present invention will be described in detail with reference to the exemplary embodiments and the accompanying drawings. Herein, "first," "second," etc. are merely for convenience of description and for convenience of distinction and are not to be construed as indicating or implying relative importance or a strict order of magnitude.

Example 1

In the exemplary embodiment, the pressure test system for the welded valve comprises a pressure test device, a plugging device, a pump pry with a water injection pipe, and a pressure test platform with an axial clamping mechanism and a hoisting mechanism. For example, welded valves may be rated for large welded valves weighing over DN200 and/or over 100 kg. For example, the welded valve may be a welded ball valve. For example, the number of plugging devices may be comparable to the number of openings of the welded valve (e.g. when the welded valve is a tee or a quad, the corresponding number of plugging devices is 3 or 4, respectively). For example, for the welded valve of the present invention applied to the oil and gas industry, it usually has only two ends, and no tee or cross.

The plugging device comprises a base body, a lining convex part, a sealing piece and a water injection channel. The lining bulge is arranged on one end face of the base body and has the shape and the size of a sleeve capable of being plugged and sealed in the welded valve. For example, the base may have a cylindrical shape or a circular truncated cone shape, but the present invention is not limited thereto, and the base may have other cylindrical shape or a circular truncated cone shape such as a prism. The lining convex part can be fixedly arranged or integrally formed at one end (such as the left end) of the base body, and can be matched with the sleeve of the welded valve so as to plug and block the sleeve. For example, the sleeve may be a straight tube section welded to both ends of the valve, which is welded directly to the process pipe and does not require flanges. For example, the sleeve and the liner boss may form a base hole fit.

The seal is configured to be mountable on the outer periphery of the liner boss. The installation of the seal is achieved, for example, by providing a seal groove on the outer periphery of the liner boss. For example, the seal may be an O-ring seal to ensure that no leakage occurs during pressure testing.

The water injection channel is arranged to penetrate through the base body and the pore channel of the lining convex part and is provided with a water injection port positioned on the other end face of the base body. For example, the water filling channel can penetrate through the lining convex part and the base body along the combination direction of the lining convex part and the base body, so that the sleeve of the welded valve is communicated with the outside, and water from the outside can be filled into the welded valve. For example, the base, the liner boss, and the water injection channel may be integrally formed (e.g., lathed, milled, drilled, integrally formed).

Furthermore, the closure device may comprise a lifting lug which is arranged on the base body and can be arranged on the outer circumference of the base body and fixedly connected (for example, screwed).

The water injection pipe of pump sled can communicate with the water filling port of water injection passageway. Here, the communication may be a screw connection, so that water injection and pressure increase are performed.

The hoisting mechanism is configured to hoist the welding valve into the axial clamping mechanism. For example, the hoist mechanism may include a crane with a shackle. When the welding valve is used, the lifting lug of the welding valve is connected with the locking hook of the crane so as to convey the welding valve to a clamping position.

The axial clamping mechanism is configured to be able to contact the other end face of the occlusion device. That is, the axial clamping mechanism provides a clamping force through contact with the end face.

Example 2

In the exemplary embodiment, the pressure test system of the welded ball valve comprises a pressure test device, 2 plugging devices as shown in fig. 1, a pump pry with a water injection pipe, and a pressure test platform with an axial clamping mechanism and a hoisting mechanism. The plugging device is integrally formed by turning, milling and drilling and comprises a base body formed by overlapping a first cylindrical table 1 and a second cylindrical table 2, a lining convex part 3 in the shape of the cylindrical table, an O-shaped sealing ring 4, a lifting lug 5 in threaded connection with the second cylindrical table 2 and a water injection channel 6 with threads. An annular groove is formed in the outer circumference of the lining convex part 3 to place an O-shaped sealing ring 4, and the lining convex part 3 and a sleeve of the welded ball valve can form a base hole to be matched.

During the use, inspect this welding ball valve back, transport one of them plugging device to the opening part of welding ball valve through hoisting machine constructs the hook lock and connects lug 5, places O type sealing washer 4 to annular groove, and the inside lining bellying 3 of intercommunication inserts the sleeve together until the terminal surface of sleeve and the right-hand member face in close contact with of second cylinder platform 2. Likewise, another occluding device is also installed. After the sealing performance is checked to be normal, the device which is installed and finished is conveyed to the axial clamping mechanism through the hook lock of the hoisting mechanism and the lifting lug of the welded ball valve. After the position of the welded ball valve is determined, a first hydraulic locking clamping plate in the axial clamping mechanism is attached to the left end face of the second cylindrical table 2, and a second hydraulic locking clamping plate is attached to the corresponding end face of the other plugging device. After fixing, dispose pressure test device above the welding ball valve, confirm that equipment is normal after, with 6 threaded connection of pump sled water injection pipe and water injection passageway in order to carry out the water injection and step up. After strength pressure test and unilateral leakproofness pressure test, record data, get rid of inside ponding to carry out the fat liquoring protection to the outer periphery of lining bellying 3. Thereby, the pressure test process of the welded ball valve is finished.

To sum up, adopt the utility model discloses a pressure testing system of welding valve and plugging device's beneficial effect includes: the pressure test system of the welding valve and the plugging device for pressure test of the welding valve can be provided, the traditional operation of carrying out end socket welding on the welding valve is changed, and the prefabricated plugging device is directly adopted for plugging, so that the construction period is greatly shortened, a large amount of welding and artificial resources are not required to be occupied, the pressure test program is simple, the safety is high, and the pressure test efficiency is obviously improved.

Although the present invention has been described above in connection with exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.

Claims

1. A pressure test system of a welded valve comprises a pressure test device and is characterized by also comprising a plugging device, a pump pry with a water injection pipe, and a pressure test platform with an axial clamping mechanism and a hoisting mechanism, wherein,

the plugging device comprises a base body, a lining convex part, a sealing piece and a water injection channel, wherein the lining convex part is arranged on one end face of the base body and has the shape and the size of a sleeve pipe which can be plugged into and plug the welded valve;

the water injection pipe of the pump pry can be communicated with the water injection port of the water injection channel;

the hoisting mechanism is configured to hoist the welding valve into the axial clamping mechanism;

the axial clamping mechanism is configured to be contactable with the other end face of the occlusion device.

2. The system for testing pressure of a welded valve of claim 1, wherein the number of plugging devices corresponds to the number of openings of the welded valve.

3. The system of claim 1, wherein the plugging device further comprises a lifting lug disposed on the base.

4. The pressure testing system of the welded valve according to claim 1, wherein the base, the liner boss and the water injection channel are integrally formed.

5. The system for testing pressure of a welded valve of claim 1, wherein the welded valve is a welded ball valve.

6. The pressure testing system of the welded valve according to claim 1, wherein the water injection port is a threaded hole.

7. The utility model provides a plugging device for welding valve pressure testing, its characterized in that, plugging device includes base member, inside lining bellying, sealing member and water injection passageway, the inside lining bellying sets up just have on the terminal surface of base member and can fill in and the shutoff the shape and the size of welded valve's sleeve, the sealing member can be installed on the periphery of inside lining bellying, the water injection passageway is set up to run through the pore of base member and inside lining bellying and has the water filling port that is located another terminal surface of base member.

8. The plugging device for testing the pressure of the welded valve according to claim 7, further comprising a lifting lug disposed on the base body.

9. The plugging device for testing the pressure of the welded valve according to claim 7, wherein the base body, the lining convex part and the water injection channel are integrally formed.