Gas pipeline pressure tapping device

Abstract

The utility model discloses a gas pipeline pressure tapping device which comprises a base, a guide rod mechanism is fixedly installed on the base, a sliding seat is installed on the guide rod mechanism in a sliding fit mode, the sliding seat can slide up and down along the guide rod mechanism, a drilling machine is fixedly installed on the sliding seat, and the drilling machine is connected with a hydraulic cylinder. A drill rod of the drilling machine drives the drill rod to rotate; a first flange is fixedly connected to the lower end of the base, a transition cylinder is fixedly connected to the lower end of the first flange, a second flange is fixedly connected to the lower end of the transition cylinder, a third flange is arranged on the upper side of the bypass valve, a fourth flange is arranged at the lower end of the bypass valve, and the bypass valve is a hollow valve body. A hole is formed in the side face of the valve body, and the third flange and the second flange are detachably and fixedly connected. When the device works, a saddle does not need to be welded, only one short circuit needs to be welded, the cost is low, the device can be arranged at each position, and compared with the same type of trepanning drill bit, the device is larger in open area, light, convenient, easy to operate, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure - tapping hole opening, in particular to a pressure - tapping hole opening device for gas transmission pipelines. Background Technique

[0002] The pressure - tapping hole opening device is a safe, environment - friendly, economic and efficient in - service pipeline maintenance and emergency repair technology, which is mainly used for the normal maintenance and transformation of pipelines carrying various media such as water, crude oil, refined oil, chemical media, natural gas, etc., and the emergency repair of sudden accidents. The pressure - tapping hole opening technology is mainly a method of creating interfaces on pipelines and containers. When opening a hole, the pipeline and container are in a pressurized or operating state. This technology can maintain and repair the pipeline without stopping production, without affecting production and material supply. When constructing on a pipeline in pressurized transportation operation, special hole - opening equipment is used to cut off the flow of the medium in the pipeline, and a temporary bypass is used to connect the two ends of the pipeline under construction, so that the medium in the pipeline continues to be transported through the temporary bypass without interruption.

[0003] For the connection of an already - operating overhead steel pipe to gas, currently, without shutting off the gas, the method of using a steel saddle to open a hole is mainly adopted, which has a high price, a heavy device, and it is difficult to install the hole - opening equipment in many positions. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pressure - tapping hole opening device for gas transmission pipelines, so as to solve the problems of high cost of purchasing the saddle and inability to connect gas under pressure for overhead pipes and special positions mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pressure - tapping hole opening device for gas transmission pipelines includes a base. A guide rod mechanism is fixedly installed on the base. A sliding seat is slidably fitted on the guide rod mechanism, and the sliding seat can slide up and down along the guide rod mechanism. A drilling machine is fixedly installed on the sliding seat, and the drill rod of the drilling machine rotates to drive the drill rod; A first flange is fixedly connected to the lower end of the base, a transition cylinder is fixedly connected to the lower end of the first flange, and a second flange is fixedly connected to the lower end of the transition cylinder;

[0006] It further includes a bypass valve. A third flange is provided on the upper side of the bypass valve and a fourth flange is provided on the lower side. The bypass valve is a hollow valve body, and an opening is provided on the side of the valve body. The third flange and the second flange are detachably and fixedly connected;

[0007] The front end of the drill rod is fixedly connected with a drill cylinder, and sawteeth are provided at the bottom of the drill cylinder. The drill cylinder can pass through the first flange, the transition cylinder, the second flange, the third flange, the fourth flange and extend out of the hollow valve body.

[0008] Preferably, the upper end of the bypass valve is fixedly connected with an intermediate structure through bolts. The intermediate structure includes an intermediate block and an intermediate cylinder. The upper end of the intermediate structure is fixedly connected with a third flange through bolts. The lower end of the bypass valve is fixedly connected with a fourth flange through bolts.

[0009] Preferably, the lower end of the fourth flange is fixedly connected with a bypass stub through bolts.

[0010] Preferably, the guide rod mechanism (4) includes two guide rods. A telescopic spring (5) is sleeved on the guide rod. The telescopic spring (5) abuts against the sliding seat. The upper half of one side of the guide rod of the guide rod mechanism (4) is of a toothed plate structure. A gear (141) is installed at one end of the sliding seat (14). The gear (141) meshes with the toothed plate of the guide rod on one side. The other side of the toothed plate is in sliding fit with the sliding seat. The gear (141) is driven to rotate by a rotating handle (3) arranged outside the sliding seat (14).

[0011] Preferably, a drill bit is fixedly connected to the top end of the inner cavity of the drill barrel. The drill bit is located inside the drill barrel. A magnet block is fitted on the drill bit. The upper end of the drill barrel is fixedly connected with a connecting block. A concave hole matched with the connecting block is opened at the bottom end of the drill rod. The connecting block is fixedly connected at the concave hole of the drill rod.

[0012] Preferably, the magnet block is made of magnet material.

[0013] Preferably, a switch is fixedly connected to the outer surface of the drilling rig. An insertion socket is connected to the switch.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. During the working process of the device of the present utility model, there is no need to perform complex saddle welding operations. Only a simple stub welding is required to complete the installation. This design significantly reduces the cost and enables the device to be flexibly arranged in various positions, greatly improving the construction efficiency and convenience.

[0015] 2. The device of the present utility model has a larger flow area compared with the same type of opening drill bit in terms of design. This enables it to process fluids more efficiently during the working process, improving the overall working efficiency. At the same time, the device is light, simple and easy to operate, greatly reducing the operation difficulty and labor intensity. More importantly, its safe and reliable design ensures the stability and safety during use, providing guarantee for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present utility model.

[0017] Figure 2 It is an installation schematic diagram of the present utility model.

[0018] Figure 3 This is a schematic diagram of the drill barrel structure of the present utility model.

[0019] Figure 4 This is a schematic diagram of the sliding seat structure of the present utility model.

[0020] In the figure: 1, drilling rig; 2, switch; 3, rotating handle; 4, guide rod mechanism; 5, telescopic spring; 6, base; 7, first flange; 8, transition cylinder; 9, second flange; 10, third flange; 11, bypass valve; 12, fourth flange; 13, bypass stub; 14, sliding seat; 141, gear; 15, drill pipe; 17, drill barrel; 171, connecting block; 172, saw teeth; 173, drill bit; 174, magnet block. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 and Figure 3 , the present utility model provides a technical solution: a pressure tapping device for gas transmission pipelines, including a base 6, a guide rod mechanism 4 is fixedly installed on the base 6, a sliding seat 14 is slidably fitted on the guide rod mechanism 4, the sliding seat 14 can slide up and down along the guide rod mechanism 4, a drilling rig 1 is fixedly installed on the sliding seat 14, and the drill pipe 15 of the drilling rig 1 is driven to rotate; the lower end of the base 6 is fixedly connected with a first flange 7, the lower end of the first flange 7 is fixedly connected with a transition cylinder 8, and the lower end of the transition cylinder 8 is fixedly connected with a second flange 9;

[0023] It further includes a bypass valve 11, a third flange 10 is provided on the upper side of the bypass valve 11, a fourth flange 12 is provided on the lower side, the bypass valve 11 is a hollow valve body, an opening is provided on the side of the valve body, and the third flange 10 and the second flange 9 are detachably and fixedly connected;

[0024] The front end of the drill pipe 15 is fixedly connected with a drill barrel 17, saw teeth 172 are provided at the bottom of the drill barrel, and the drill barrel 17 can pass through the first flange 7, the transition cylinder 8, the second flange 9, the third flange 10, the fourth flange 12 and extend out of the hollow valve body;

[0025] The upper end of the bypass valve 11 is fixedly connected with an intermediate structure through bolts, the intermediate structure includes an intermediate block and an intermediate cylinder, the upper end of the intermediate structure is fixedly connected with a third flange 10 through bolts, and the lower end of the bypass valve 11 is fixedly connected with a fourth flange 12 through bolts;

[0026] The lower end of the fourth flange 12 is fixedly connected with a bypass stub 13 through bolts;

[0027] A switch 2 is fixedly connected to the outer surface of the drill rig 1, and a plug socket is connected to the switch 2 for controlling the operation of the drill rig.

[0028] Please refer to Figure 1 and Figure 4 , the guide rod mechanism 4 includes 2 guide rods, a telescopic spring 5 is sleeved on the guide rods, the telescopic spring 5 abuts against the slide seat, the upper half of the guide rod on one side of the guide rod mechanism 4 is a toothed plate structure, one end of the slide seat 14 is provided with a gear 141, the gear 141 meshes with the toothed plate of the guide rod on one side, the other side of the toothed plate is slidably matched with the slide seat, and the gear 141 is driven to rotate by a rotating handle 3 outside the slide seat 14.

[0029] Please refer to Figure 3 , a drill bit 173 is fixedly connected to the top end of the inner cavity of the drill barrel 17, the drill bit 173 is located inside the drill barrel 17, a magnet block 174 is fitted on the drill bit 173, a connecting block 171 is fixedly connected to the upper end of the drill barrel, a concave hole matching the connecting block 171 is provided at the bottom end of the drill pipe 15, and the connecting block 171 is fixedly connected at the concave hole of the drill pipe 15;

[0030] The magnet block 174 is made of magnet material and is used to absorb the iron filings and hole plates left by the hole opening.

[0031] Working principle:

[0032] The first flange 7, the transition cylinder 8, and the second flange 9 form a drill bit transition stub, and the third flange 10, the bypass valve 11, the fourth flange 12, and the intermediate structure form a bypass valve. The drill rig 1, the switch 2, the rotating handle 3, the guide rod mechanism 4, the telescopic spring 5, the base 6, the slide seat 14, the gear 141, the drill pipe 15, the drill barrel 17, the connecting block 171, the saw teeth 172, the drill bit 173, and the magnet block 174 form a complete hole opening device.

[0033] During operation, the bypass stub 13 is welded on the overhead steel pipe under pressure, the bypass valve is installed at the upper end of the bypass stub 13 through threads, the drill bit transition stub is installed at the upper end of the installed valve through threads, the hole opening device is installed at the upper end of the drill bit transition stub through threads. After the installation is completed, the bypass valve 11 is opened and the switch 2 is turned on to start the drill rig 1 for hole opening. The drill bit 173 passes through the flange and enters the bypass stub 13 and rotates downward to realize hole opening. After the hole opening is completed, the rotating handle 3 is rotated to lift the drill barrel to the transition stub and then the valve is closed. After the gas behind the valve is emptied, the equipment behind the valve, namely the drill bit transition stub and the hole opening device, is removed and a new pipeline is connected. After the hole is opened in the low-pressure and medium-pressure B pipelines, the iron filings and hole plates can be sucked out by the magnet block 174 to ensure better operation of the original pipeline. The working requirements are that the operating pressure is below 0.1 mpa; the hole opening diameter is DN80 and below.

[0034] In terms of safety, the new device uses four sets of O-ring seals, namely the first flange 7, the second flange 9, the third flange 10, and the fourth flange 12. After multiple high-pressure experiments, the hole-opening effect is better than that of the traditional saddle using two O-ring seals.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas pipeline pressure opening device, comprising a base (6), characterized in that: A guide rod mechanism (4) is fixedly mounted on the base (6); a slide seat (14) is slidably mounted on the guide rod mechanism (4); the slide seat (14) can slide up and down along the guide rod mechanism (4); a drilling rig (1) is fixedly mounted on the slide seat (14); the drilling rig (1) has a drill rod (15) and drives the drill rod (15) to rotate; a first flange (7) is fixedly connected to the lower end of the base (6); a transition tube (8) is fixedly connected to the lower end of the first flange (7); and a second flange (9) is fixedly connected to the lower end of the transition tube (8); Also included is a bypass valve (11), wherein the bypass valve (11) is provided with a third flange (10) on the upper side and a fourth flange (12) on the lower end, the bypass valve (11) is a hollow valve body, a hole is provided on the side of the valve body, and the third flange (10) is detachably fixedly connected to the second flange (9); The front end of the drill rod (15) is fixedly connected to the drill tube (17), and the bottom of the drill tube is provided with saw teeth (172). The drill tube (17) can pass through the first flange (7), the transition tube (8), the second flange (9), the third flange (10), and the fourth flange (12) and extend out of the hollow valve body.

2. A gas pipeline pressure opening device according to claim 1, characterized in that: The upper end of the bypass valve (11) is fixedly connected to an intermediate structure via bolts, the intermediate structure comprising an intermediate block and an intermediate cylinder, the upper end of the intermediate structure is fixedly connected to a third flange (10) via bolts, and the lower end of the bypass valve (11) is fixedly connected to a fourth flange (12) via bolts.

3. The gas pipeline pressure opening device according to claim 1, characterized in that: The lower end of the fourth flange (12) is fixedly connected to a bypass short circuit (13) by means of bolts.

4. The gas pipeline pressure opening device according to claim 1, characterized in that: The guide rod mechanism (4) comprises two guide rods, a telescopic spring (5) is sleeved on the guide rods, the telescopic spring (5) is supported on the slide seat, the upper half of the guide rod on one side of the guide rod mechanism (4) is a toothed plate structure, a gear (141) is installed at one end of the slide seat (14), the gear (141) is meshed with the toothed plate of the guide rod on one side, the other side of the toothed plate is slidably matched with the slide seat, and the gear (141) is provided with a rotating handle (3) on the outside of the slide seat (14) to drive the rotation.

5. The gas pipeline pressure opening device according to claim 1, characterized in that: A drill bit (173) is fixedly connected to the top of the inner cavity of the drill barrel (17), the drill bit (173) is located in the drill barrel (17), a magnet block (174) is mounted on the drill bit (173), a connecting block (171) is fixedly connected to the upper end of the drill barrel, a concave hole matching the connecting block (171) is formed at the bottom end of the drill rod (15), and the connecting block (171) is fixedly connected to the concave hole of the drill rod (15).

6. A gas pipeline pressure opening device according to claim 5, characterized in that: The magnet block (174) is made of magnet material.

7. The gas pipeline pressure opening device according to claim 1, characterized in that: A switch (2) is fixedly connected to the outer surface of the drilling rig, and a plug socket is connected to the switch (2).

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