End sealing mechanism for air tightness detection of pressure pipeline

Abstract

The utility model relates to an end sealing mechanism for pressure pipeline air tightness detection, which comprises a detection pipe, an air bag, a sealing cover and a nut, the tail end of the detection pipe is provided with a first joint, the outer side of the detection pipe is fixedly connected with an inflation and deflation jacket, and the tail end of the inflation and deflation jacket is provided with a second joint; the air bag is mounted on the outer side of the head of the inflating and deflating jacket, a communicating hole for communicating the air bag with an inner cavity of the inflating and deflating jacket is formed in the head of the inflating and deflating jacket, and the air bag is inflated and expanded in the pressure pipeline; the sealing cover is sleeved on the inflating and deflating jacket; and the nut is screwed at the tail part of the inflating and deflating jacket, and is matched with the pressure pipeline to clamp the sealing cover, so that the sealing cover blocks the tail end of the pressure pipeline. The end sealing mechanism has the beneficial effects that the end sealing mechanism can be suitable for end sealing of pressure pipelines with similar diameters, the customized number of the end sealing mechanism is reduced, and the detection cost of enterprises is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure pipeline detection technical field especially relates to a pressure pipeline gas tightness detection is with end seal mechanism. BACKGROUND

[0002] Pressure pipeline refers to all the pipe that bears internal pressure or external pressure, no matter its pipe medium, pressure pipeline is a part of the pipe. Pressure pipeline needs to carry out multiple quality detection in the research and development, production, installation process.

[0003] Among them, when carrying out gas tightness detection to pressure pipeline, need to seal the both ends of pressure pipeline to make the inside of pressure pipeline become airtight space, the existing end seal structure needs to be customized according to different diameter pressure pipeline, lead to the pressure pipeline of similar diameter all cannot share the same end seal structure, increase the detection cost of enterprise. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above problems existing in prior art, provide a kind of end seal mechanism for pressure pipeline gas tightness detection.

[0005] To realize the above technical purpose, reach the above technical effect, the utility model is realized by following technical scheme:

[0006] A kind of end seal mechanism for pressure pipeline gas tightness detection, comprising:

[0007] Detection pipe, the tail end of the detection pipe is provided with first joint for connecting air pressure gauge and inflator pump, the outside of the detection pipe is fixedly connected with inflator jacket, the tail end of the inflator jacket is provided with second joint for connecting inflator pump;

[0008] Air bag, the air bag is installed on the head outside of inflator jacket, the head of the inflator jacket is provided with communication hole for connecting air bag with the internal cavity of inflator jacket, the air bag is filled with gas and is inflated in pressure pipeline;

[0009] Cover, the cover is sleeved on the inflator jacket;

[0010] Nut, the nut is screwed in the tail of inflator jacket, the nut is cooperated with pressure pipeline and clamps the cover to make the cover block in the end of pressure pipeline.

[0011] Wherein, the head outside of the inflator jacket is provided with two circles of parallel installation ring, the communication hole is located between two installation rings, the upper and lower edges of the inside of the air bag are installed on an installation ring respectively, one annular clamping plate is installed on each installation ring, the clamping plate is installed on installation ring with screw, the clamping plate is cooperated with installation ring and clamps the edge of the inside of air bag.

[0012] The air bag is a circular ring.

[0013] Preferably, the outer side of the air bag is provided with a plurality of spherical cap-shaped adsorption grooves.

[0014] The cover comprises a circular ring-shaped steel plate and a circular ring-shaped rubber sealing gasket, and the rubber sealing gasket is attached to one end of the steel plate facing the air bag.

[0015] Preferably, the steel plate is provided with a reinforcing rib at the end away from the rubber sealing gasket.

[0016] Preferably, the hollow sealing ring is clamped between the nut and the steel plate.

[0017] Preferably, the outer side of the nut is fixedly connected with a plurality of linear handles arranged in a circular array.

[0018] The beneficial effects of the utility model are as follows: the plasticity of the air bag is utilized, the air bag can be tightly expanded in the pressure pipeline with similar diameter after being filled with air, the detection tube and the gas charging and discharging clamp sleeve are fixed in the pressure pipeline, the cover is blocked at the end of the pressure pipeline through the clamping and tightening of the nut and the pressure pipeline, and thus the end of the pressure pipeline is blocked; the end sealing mechanism can be applied to the end sealing of the pressure pipeline with similar diameter, the number of customized end sealing mechanisms is reduced, and the detection cost of enterprises is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0020] Figure 1 is a structural schematic view of the end sealing mechanism installed at the end of the pressure pipeline in the utility model;

[0021] Figure 2 is a three-dimensional structural schematic view of the end sealing mechanism in the utility model;

[0022] Figure 3 is a planar structural schematic view of the end sealing mechanism in the utility model;

[0023] Figure 4 is a structural schematic view of the combination of the detection tube, the gas charging and discharging clamp sleeve and the clamping plate in the utility model;

[0024] Figure 5 is a structural schematic view of the cover in the utility model;

[0025] The figure label is explained: detection tube 1, first joint 11, gas charging and discharging jacket 2, second joint 21, communication hole 22, mounting ring 23, air bag 3, adsorption groove 31, cover 4, steel plate 41, reinforcing rib 411, rubber sealing pad 42, nut 5, straight handle 51, clamping plate 6, hollow sealing ring 7, pressure pipeline 100. DETAILED DESCRIPTION

[0026] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] As Figure 1 As shown in the figure, a kind of end sealing mechanism for pressure pipeline air tightness detection, including detection tube 1, air bag 3, cover 4, nut 5.

[0028] The tail end of detection tube 1 is provided with first joint 11 for connecting air pressure gauge and inflator, and the inflator pumps gas into pressure pipeline through first joint 11 and detection tube 1, and air pressure gauge is used to monitor the air pressure change in pressure pipeline, to determine whether pressure pipeline leaks.

[0029] The head corner of detection tube 1 is rounded, to avoid the head of detection tube 1 to cut air bag 3.

[0030] The outer side of detection tube 1 is fixedly connected with gas charging and discharging jacket 2, and the tail end of gas charging and discharging jacket 2 is provided with second joint 21 for connecting inflator.

[0031] Air bag 3 is circular, and air bag 3 is installed on the outer side of the head of gas charging and discharging jacket 2, the head of gas charging and discharging jacket 2 is provided with communication hole 22 for connecting air bag 3 with the internal cavity of gas charging and discharging jacket 2, and the gas is pumped by inflator and enters air bag 3 in sequence through second joint 21, gas charging and discharging jacket 2 and communication hole 22, and air bag 3 is inflated and tight in pressure pipeline 100.

[0032] The outer side of air bag 3 is provided with several spherical crown-shaped adsorption grooves 31, and the gas in adsorption groove is extruded after air bag 3 is inflated, so that adsorption groove 31 is adsorbed on the inner side wall of pressure pipeline, to improve the stability of air bag in pressure pipeline 100.

[0033] Cover 4 includes circular steel plate 41 and circular rubber sealing pad 42, and rubber sealing pad 42 is pasted on the end of steel plate 41 towards air bag 3;The end of steel plate 41 away from rubber sealing pad 42 is provided with reinforcing rib 411, to increase the strength of steel plate 41 by reinforcing rib 411;Cover 4 is sleeved on gas charging and discharging jacket 2.

[0034] The outer side of nut 5 is fixedly connected with a plurality of straight handles 51 arranged in annular array, and straight handle 51 facilitates detection personnel to rotate nut 5;Nut 5 is screwed on the tail of gas charging and discharging jacket 2, and nut 5 is clamped with pressure pipeline 100 to make cover 4 block in the end of pressure pipeline 100.

[0035] The hollow sealing ring 7 is arranged between the nut 5 and the steel plate 41, and the hollow sealing ring 7 is used to seal the gap between the cover and the gas charging sleeve 2, so that the gas in the pressure pipeline is prevented from overflowing from the gap between the cover and the gas charging sleeve 2.

[0036] The head of the gas charging sleeve 2 is provided with two parallel mounting rings 23, the communication hole 22 is located between the two mounting rings 23, the upper and lower edges of the inner side of the air bag 3 are respectively mounted on one mounting ring 23, a circular clamping plate 6 is mounted on each mounting ring 23, the clamping plate 6 is mounted on the mounting ring 23 by screws, and the clamping plate 6 is used to clamp the edges of the inner side of the air bag 3 in cooperation with the mounting ring 23.

[0037] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model.

Claims

1. An end-sealing mechanism for testing the airtightness of pressure pipelines, characterized in that, include: The detection tube has a first connector at its tail end for connecting a pressure gauge and an air pump. An inflation / deflation jacket is fixed to the outside of the detection tube, and a second connector at the tail end of the inflation / deflation jacket is for connecting an air pump. An airbag is installed on the outside of the head of an inflation / deflation jacket. The head of the inflation / deflation jacket has a communication hole that connects the airbag to the internal cavity of the inflation / deflation jacket. The airbag is inflated and tightly packed in a pressure pipe when filled with air. A cap is fitted onto the inflation / deflation jacket; A nut is screwed onto the tail of the inflation / deflation jacket. The nut cooperates with the pressure pipe to clamp the cap, causing the cap to block the end of the pressure pipe.

2. The end-sealing mechanism according to claim 1, characterized in that: The head of the inflation / deflation jacket is provided with two parallel mounting rings on the outer side. The connecting hole is located between the two mounting rings. The upper and lower edges of the inner side of the airbag are respectively mounted on a mounting ring. A circular clamp is mounted on each mounting ring. The clamp is installed on the mounting ring with screws. The clamp and the mounting ring cooperate to clamp the inner edge of the airbag.

3. The end-sealing mechanism according to claim 1, characterized in that: The airbag is circular.

4. The end-sealing mechanism according to claim 1, characterized in that: The outer side of the airbag is provided with several spherical adsorption grooves.

5. The end-sealing mechanism according to claim 1, characterized in that: The cover includes an annular steel plate and an annular rubber sealing gasket, the rubber sealing gasket being adhered to the end of the steel plate facing the airbag.

6. The end-sealing mechanism according to claim 5, characterized in that: The steel plate has a reinforcing rib at the end away from the rubber sealing gasket.

7. The end-sealing mechanism according to claim 4, characterized in that: A hollow sealing ring is sandwiched between the nut and the steel plate.

8. The end-sealing mechanism according to claim 1, characterized in that: The nut is fixed to the outside with multiple straight handles arranged in a circular array.

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