CN115683821A - A plugging device and method for pipeline pressure resistance detection - Google Patents

Abstract

The invention discloses a plugging device and a plugging method for pipeline compression resistance detection, which comprises an operation box, wherein a box door is arranged on the front side in a rotating mode, a positioning rubber seat is arranged at the bottom of the operation box, the top of the positioning rubber seat is positioned in the operation box and convexly provided with a rubber plug matched with a pipe orifice of a pipeline, an air pressure transmission mechanism is arranged on the inner top wall of the operation box, the top of the air pressure transmission mechanism is positioned outside the operation box and provided with an air vent, the bottom of the air pressure transmission mechanism is provided with a flexible plug and used for transmitting the flexible plug to vertically move and expand and contract, the flexible plug is provided with an inner cavity and corresponds to the rubber plug, a pair of limiting plates which are symmetrically positioned at two sides of the rubber plug and can be far away from or close to the rubber plug are vertically arranged in the operation box, and the outer peripheral walls of the rubber plug and the flexible plug are correspondingly and tightly abutted against the inner peripheral walls of two end orifices of the pipeline when the operation box is in a working state. The invention solves the technical problem of how to conveniently and reliably effectively plug the pipeline.

Description

A plugging device and method for pipeline pressure resistance detection

technical field

The invention relates to the technical field of pipeline detection, in particular to a plugging device and method for pipeline pressure resistance detection.

Background technique

A pipe is a device used to transport fluid media such as gas and liquid. Before the pipeline leaves the factory, it needs to be blocked for pressure resistance testing, so as to prevent defective products from flowing to the client and ensure the safety of use. At present, the pipes are blocked by fastening the caps with sealing rings on the two ports of the pipes by screws. Obviously, this not only leads to cumbersome operation and low sealing efficiency, but also is easy to carry out during the test. The looseness of the screw occurs, which leads to low reliability and poor sealing of the plugging, thereby affecting the accuracy of the test result.

Contents of the invention

In view of the deficiencies in the background technology, the present invention provides a plugging device and method for pipeline pressure resistance detection to solve how to effectively plug the pipeline conveniently and reliably.

In order to solve the above technical problems, the present invention provides a plugging device for pipeline pressure resistance detection, including an operation box, the front of the operation box is rotatably installed with a door, and the bottom is equipped with a positioning rubber seat, and the positioning rubber seat The top is located in the operation box, and a rubber plug matching the nozzle of the pipeline is protruded on it. The inner top wall of the operation box is provided with a pneumatic transmission mechanism, and the top of the pneumatic transmission mechanism is located in the There is an air vent outside the operation box, and a flexible plug is installed on the bottom to drive the flexible plug to move vertically and expand and contract. The flexible plug has a hollow inner cavity and is connected to the rubber plug. Correspondingly, a pair of limit plates symmetrically located on both sides of the rubber plug and that can be separated or approached are vertically provided in the operation box. The two limit plates are used to support the pipeline to make the pipeline It is always vertically located between the rubber plug and the flexible plug. When in working condition, the outer peripheral walls of the rubber plug and the flexible plug are correspondingly tightly attached to the two ports of the pipeline. on the inner peripheral wall.

In one embodiment of the present invention, the pneumatic transmission mechanism includes a pressure regulating mechanism, an inflation mechanism, a pressure plate, a vent pipe and a guide post, the pressure regulating mechanism includes a pressure regulating box, a transmission plate and several compression springs, and the transmission The plate is horizontally located in the pressure regulating box, and the bottom is vertically connected with a number of evenly distributed compression springs, the bottom of the compression springs are fixed on the inner bottom wall of the pressure regulating box, and the vent is located in the The pressure regulating box is located on the side wall above the transmission plate; the inflation mechanism includes an inflation box and at least one inflation component, the top of the inflation box is fixed on the bottom of the pressure regulation box, and the inflation component is located at In the inflatable box, it includes a transmission rod, a pressure rod, an energy-gathering spring, a delay block, a resistance mechanism and an air bag, the air bag is vertically installed on the inner bottom wall of the inflatable box, and the transmission rod is horizontal Located above the airbag, the pressure rod, the energy-collecting spring and the delay block are vertically and fixedly connected between the transmission rod and the airbag from top to bottom, and the resistance mechanism is movable Connected to the upper end of the delay block, the guide column vertically slides through the pressure regulating box and the gas filling box, the transmission plate and the transmission rod are fixedly connected to the guide column, the The bottom end of the guide post is fixedly connected with the pressure plate horizontally located below the inflatable box, the flexible plug is installed on the bottom of the pressure plate, and its inner cavity communicates with the air bag through the ventilation tube.

In one embodiment of the present invention, the axes of the pressure regulating box, the air-inflating box and the guide post are coincident, and the number of the inflatable components is two, and they are located symmetrically on both sides of the guide post.

In one embodiment of the present invention, a pair of horizontal cylinders are provided on the inner wall of the operation box in corresponding transmission connection with the limiting plate.

In one embodiment of the present invention, a pair of said limiting plates are correspondingly provided with arc-shaped guide grooves matching with the outer wall of said pipeline on opposite surfaces of each other.

A method for sealing pipelines, carried out in the above-mentioned sealing device for pipeline pressure resistance detection, comprising the following steps:

Step S1, placing the pipe vertically on the positioning rubber seat, and the top of the rubber plug extends into the bottom port of the pipe;

Step S2, controlling a pair of the limiting plates to approach each other until the opposing surfaces of the two limiting plates abut against the outer wall of the pipeline so that the pipeline is always vertical;

Step S3, continuously inject high-pressure gas into the air vent, under the action of high-pressure gas, the pneumatic transmission mechanism first drives the flexible plug to completely enter the top port of the pipeline, and then drives the pipeline to press down vertically until the bottom end is pressed against the positioning rubber seat, the rubber plug completely extends into the bottom port of the pipeline to seal the bottom end of the pipeline, and finally drives the flexible plug to expand to the After the top of the pipeline is sealed, stop feeding the high-pressure gas.

Compared with the prior art, the above technical solution of the present invention has the following advantages: the present invention cooperates with the positioning rubber seat, rubber plug, flexible plug, pneumatic transmission mechanism and a pair of limit plates so that when blocking, only Put the pipe vertically on the positioning rubber seat, and the top of the rubber plug extends into the bottom port of the pipe, and then make the opposing surfaces of the limiting plates abut against the outer wall of the pipe so that the pipe is always vertical Straight, and finally the high-pressure gas is continuously passed into the pneumatic transmission mechanism. Under the transmission of the pneumatic transmission mechanism, the flexible plug first completely enters the top port of the pipeline, and then the pipeline is vertically pressed down until the bottom end is pressed against the positioning rubber seat. The rubber plug fully extends into the bottom port of the pipe to seal the bottom end of the pipe, and then the flexible plug expands to seal the top end of the pipe, thus realizing the effective plugging of the pipe conveniently and reliably, greatly improving the operating efficiency The convenience of operation, the efficiency of sealing and the reliability of sealing ensure the accuracy of test results.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of another perspective of the present invention;

Fig. 3 is the use state figure of the present invention;

Fig. 4 is the structural representation of pneumatic transmission mechanism among the present invention;

Description of reference signs in the manual: 1. Operation box, 2. Box door, 3. Positioning rubber seat, 4. Rubber plug, 5. Pneumatic transmission mechanism, 51. Air vent, 52. Pressure regulating mechanism, 521. Pressure regulating box , 522, transmission plate, 523, compression spring, 53, inflatable mechanism, 531, inflatable box, 532, transmission rod, 533, pressure rod, 534, energy-gathering spring, 535, delay block, 536, resistance mechanism, 537 , air bag, 54, pressure plate, 55, vent pipe, 56, guide post, 6, flexible plug, 7, limit plate, 8, horizontal cylinder.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

The foregoing and other technical contents, features and functions of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. Moreover, the same reference numerals represent the same elements throughout the embodiments.

Referring to Fig. 1, Fig. 2 and Fig. 3, a plugging device for pipeline pressure resistance detection includes an operation box 1, the front of the operation box 1 is rotatably equipped with a box door 2, and the bottom is equipped with a positioning rubber seat 3, The top of the positioning rubber seat 3 is located in the operation box 1, and a rubber plug 4 matching the nozzle of the pipeline is protruded on it, and the inner top wall of the operation box 1 is provided with a pneumatic transmission. Mechanism 5, the top of the pneumatic transmission mechanism 5 is located outside the operation box 1 and is provided with a vent 51, and a flexible plug 6 is installed on the bottom to drive the flexible plug 6 to move vertically and expand and contract. The flexible plug 6 has a hollow inner cavity and corresponds to the rubber plug 4. The operation box 1 is vertically provided with a pair of limit stops symmetrically located on both sides of the rubber plug 4 that can be moved away or approached. plate 7, the two limiting plates 7 are used to support the pipeline so that the pipeline is always vertically located between the rubber plug 4 and the flexible plug 6, and when it is in working condition, the The outer peripheral walls of the rubber plug 4 and the flexible plug 6 are in close contact with the inner peripheral walls of the two ports of the pipeline. Through the cooperation of the positioning rubber seat 3, the rubber plug 4, the flexible plug 6, the air pressure transmission mechanism 5 and a pair of limit plates 7, when blocking, just put the pipe vertically on the positioning rubber seat 3 , the top of the rubber plug 4 extends into the bottom port of the pipeline, and then the opposing surfaces of the limiting plates 7 are pressed against the outer wall of the pipeline so that the pipeline is always vertical, and finally the high-pressure gas is continuously passed through into the pneumatic transmission mechanism 5, under the transmission of the pneumatic transmission mechanism 5, the flexible plug 6 first completely enters the top port of the pipeline, and then the pipeline is vertically pressed down until the bottom end is pressed against the positioning rubber seat 3, and the rubber plug 4 is completely It extends into the bottom port of the pipeline to seal the bottom end of the pipeline, and then the flexible plug 6 expands to seal the top end of the pipeline, thereby achieving the technical effect of conveniently and reliably effectively blocking the pipeline.

Wherein, a pair of limiting plates 7 realizes the technical effect of being able to be separated or approached through the following connection relationship: a pair of transverse cylinders 8 correspondingly connected to the limiting plates 7 are provided on the inner wall of the operation box 1 .

Referring to Figure 4, the pneumatic transmission mechanism 5 realizes the technical effect of vertical movement and expansion and contraction of the transmission flexible plug 6 through the following structure: the pneumatic transmission mechanism 5 includes a pressure regulating mechanism 52, an inflation mechanism 53, a pressure plate 54, and a vent pipe 55 and guide post 56, the pressure regulating mechanism 52 includes a pressure regulating box 521, a transmission plate 522 and a number of compression springs 523, the transmission plate 522 is horizontally located in the pressure regulating box 521, and the bottom is vertically connected with several even Distributed compression springs 523, the bottom of the compression springs 523 are fixed on the inner bottom wall of the pressure regulating box 521, and the vent 51 is located on the side of the pressure regulating box 521 above the transmission plate 522. On the wall; the inflation mechanism 53 includes an inflation box 531 and at least one inflation assembly, the top of the inflation box 531 is fixed on the bottom of the pressure regulating box 521, and the inflation assembly is located in the inflation box 531, its Including transmission rod 532, pressure rod 533, energy-gathering spring 534, delay block 535, resistance mechanism 536 and air bag 537, described air bag 537 is vertically installed on the inner bottom wall of described inflatable box 531, and described transmission rod 532 is horizontally located above the air bag 537, and the pressing rod 533, the energy gathering spring 534 and the delay block 535 are fixedly connected vertically and sequentially between the transmission rod 532 and the air bag 537 from top to bottom. Between, the resistance mechanism 536 is movably connected to the upper end of the delay block 535, the guide column 56 vertically slides through the pressure regulating box 521 and the inflation box 531, the transmission plate 522 and the The transmission rod 532 is fixedly connected to the guide column 56, and the bottom end of the guide column 56 is fixedly connected with the pressure plate 54 horizontally located below the inflatable box 531, and the flexible plug 6 is installed on the pressure plate 54 , and its inner chamber communicates with the air bag 537 through the vent tube 55 .

The axes of the pressure regulating box 521, the inflatable box 531 and the guide post 56 coincide, the number of the inflatable components is 2, and they are symmetrically located on both sides of the guide post 56, and a pair of the limit The plates 7 are correspondingly provided with arc-shaped guide grooves matching with the outer wall of the pipe on the opposite surfaces of each other, which improves the stability of the transmission.

A method for plugging a pipeline, performed in the above-mentioned plugging device for pipeline pressure resistance detection, comprising the following steps:

Step S1, place the pipe vertically on the positioning rubber seat 3, and the top of the rubber plug 4 extends into the bottom port of the pipe;

Step S2, controlling a pair of the limiting plates 7 to approach each other until the opposing surfaces of the two limiting plates 7 are correspondingly attached to the outer wall of the pipeline so that the pipeline is always vertical;

Step S3, continuously inject high-pressure gas into the vent 51, under the action of high-pressure gas, the pneumatic transmission mechanism 5 first drives the flexible plug 6 to completely enter the top port of the pipeline, and then drives the pipeline Press down vertically until the bottom end is pressed against the positioning rubber seat 3, and the rubber plug 4 completely extends into the bottom port of the pipeline to seal the bottom end of the pipeline, and finally drives the flexible After the plug 6 expands and seals the top of the pipeline, stop feeding the high-pressure gas. The method achieves the technical effect of conveniently and reliably effectively blocking the pipeline, and is convenient in operation, high in plugging efficiency, reliable in plugging, good in plugging and sealing performance, and effectively ensures the accuracy of test results.

The working principle of the present invention: when in use, firstly, open the box door 2, place the pipeline to be plugged vertically on the positioning rubber seat 3 in the operation box 1, and make the top of the rubber plug 4 extend into the pipeline In the bottom port, then, control a pair of horizontal cylinders 8 to drive the limit plates 7 to approach each other, until the opposite surfaces of the two limit plates 7 are correspondingly attached to the outer wall of the pipeline so that the pipeline is vertical, and then, Continuously feed high-pressure gas into the vent 51, and the transmission plate 522 moves vertically downward under the push of the high-pressure gas. The transmission plate 522 drives the pressure plate 54, the transmission rod 532 and the pressure rod 533 to move downward through the guide post 56, and the pressure plate 54 First drive the flexible plug 6 to extend into the top port of the pipeline, and then push the pipeline so that its bottom end is pressed against the positioning rubber seat 3, the rubber plug 4 completely extends into the bottom port of the pipeline and its outer peripheral wall is tightly attached to the pipeline At the same time, the pressure rod 533 squeezes the energy-gathering spring 534, and the energy-gathering spring 534 is compressed and gathers elastic potential energy until the delay block 535 pushes the resistance mechanism 536 to separate, and the delay block 535 moves to Move downward to extrude the air bag 537, the gas in the air bag 537 is filled into the inner cavity of the flexible plug 6 through the ventilation tube 55, and after the flexible plug 6 expands, its outer peripheral wall is tightly attached to the inner peripheral wall of the top port of the pipeline, and then the ventilation is stopped. Just enter the high pressure gas.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise specified and limited, the terms "setting" and "connection" should be interpreted in a broad sense, for example, it can be a fixed connection or an optional connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (6)

1. The utility model provides a pipeline resistance to compression detects uses plugging device, a serial communication port, including the control box, the front of control box is rotated and is installed chamber door, bottom and installs location rubber seat, the top of location rubber seat is located in the control box, and the protruding rubber end cap that is equipped with the mouth of pipe looks adaptation with the pipeline on it, be equipped with pneumatic transmission mechanism on the interior roof of control box, pneumatic transmission mechanism's top is located install flexible end cap and transmission outside the control box and on being equipped with blow vent, the bottom flexible end cap vertical movement and breathing, flexible end cap have hollow inner chamber and with the rubber end cap is corresponding, the vertical limiting plate that is equipped with a pair of symmetric position in the control box the both sides of rubber end cap can be kept away from or be close to, two the limiting plate is used for right the pipeline supports the messenger the pipeline is vertical form all the time be located between the rubber end cap, when being in operating condition, the rubber end cap with the periphery wall of flexible end cap corresponds closely to support and pastes on the internal perisporium of the both ends mouth of pipeline.

2. The plugging device for pipeline compression resistance detection according to claim 1, wherein the pneumatic transmission mechanism comprises a pressure regulating mechanism, an inflation mechanism, a pressing plate, a vent pipe and a guide post, the pressure regulating mechanism comprises a pressure regulating box, a transmission plate and a plurality of compression springs, the transmission plate is horizontally positioned in the pressure regulating box, the bottom of the transmission plate is vertically connected with the plurality of compression springs which are uniformly distributed, the bottoms of the compression springs are fixedly connected to the inner bottom wall of the pressure regulating box, and the vent hole is formed in the side wall of the pressure regulating box above the transmission plate; the inflation mechanism comprises an inflation box and at least one inflation assembly, the top of the inflation box is fixedly connected to the bottom of the pressure regulating box, the inflation assembly is located in the inflation box and comprises a transmission rod, a pressing rod, an energy-gathering spring, a time delay block, an anti-resistance mechanism and an air bag, the air bag is vertically installed on the inner bottom wall of the inflation box, the transmission rod is horizontally located above the air bag, the pressing rod, the energy-gathering spring and the time delay block are sequentially and vertically fixedly connected between the transmission rod and the air bag from top to bottom, the anti-resistance mechanism is movably connected to the upper end of the time delay block, the guide pillar vertically slides to penetrate through the pressure regulating box and the inflation box, the transmission plate and the transmission rod are fixedly connected onto the guide pillar, the bottom end of the guide pillar is fixedly connected with a pressing plate horizontally located below the inflation box, the flexible plug is installed at the bottom of the pressing plate, and the inner cavity of the flexible plug is communicated with the air bag through the vent pipe.

3. The plugging device for pipeline compression resistance detection according to claim 2, wherein the axes of the pressure regulating tank, the inflation tank and the guide post are coincident, and the number of the inflation assemblies is 2, and the inflation assemblies are symmetrically located on two sides of the guide post.

4. The plugging device for pipeline compression resistance detection according to claim 1, wherein a pair of transverse cylinders in transmission connection with the limiting plate is arranged on the inner wall of the operation box.

5. The plugging device for pipeline compression resistance detection according to claim 1, wherein the pair of limiting plates are correspondingly provided with arc-shaped guide grooves adapted to the outer wall of the pipeline on the opposite surfaces of the limiting plates.

6. A pipe plugging method performed in the pipe anti-pressure detection plugging device according to any one of claims 1 to 5, comprising the steps of:

s1, vertically clamping a pipeline on the positioning rubber seat, wherein the top of the rubber plug extends into a bottom port of the pipeline;

s2, controlling the pair of limiting plates to approach each other until the opposite surfaces of the two limiting plates correspondingly abut against the outer wall of the pipeline, so that the pipeline is always vertical;

and S3, continuously introducing high-pressure gas into the vent hole, driving the flexible plug to completely enter the top port of the pipeline by the pneumatic transmission mechanism under the action of the high-pressure gas, then driving the pipeline to vertically press down to the bottom end to be tightly abutted against the positioning rubber seat, completely extending the rubber plug into the bottom port of the pipeline to seal the bottom end of the pipeline, and finally driving the flexible plug to expand to seal the top end of the pipeline, and stopping introducing the high-pressure gas.

Images