Detection device for pressure pipeline leakage

Abstract

The utility model discloses a detection device for pressure pipeline leakage, which comprises a shell, a vent hole arranged on one side of the shell and a cylinder fixed on the outer wall of the shell, the vent hole is communicated with the cylinder, the other side of the cylinder is connected with a telescopic column in a sliding manner, the outer wall of the telescopic column is attached to the inner wall of the cylinder, and the telescopic column is connected with the shell. The outer wall of the telescopic column is fixedly connected with a limiting sliding block, and a sliding groove allowing the limiting sliding block to slide directionally is formed in the inner surface of the barrel. According to the detection device for pressure pipeline leakage, the shell and the pressure pipeline leakage section are assembled, so that gas leaked from a pressure pipeline leakage point flows into the cylinder through the vent hole, and the air pressure in a closed space formed by the cylinder and the telescopic column is increased, so that the telescopic column is pushed to stretch outwards; the moving telescopic column is in contact with the contact type rotation speed sensor, so that the line speed is measured, and the leakage degree can be tested while gas leakage in the pressure pipeline is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure pipelines, in particular to a pressure pipeline leakage detection device. Background Art

[0002] Pressure piping refers to all pipelines that are subject to internal or external pressure, regardless of the medium inside the pipe. Pressure piping is a part of a pipeline that is used to transport, distribute, mix, separate, discharge, meter, control and stop the flow of fluids. It is an assembly consisting of pipes, pipe fittings, flanges, bolted connections, gaskets, valves, other components or pressure-bearing parts and supports.

[0003] During the use of pressure pipelines, some pipelines may leak. In order to determine whether the corresponding pipelines are leaking, it is necessary to detect the leaking points. In the prior art, there are devices that can detect pressure pipeline leaks, but most of them can only roughly test whether there is leakage, and cannot perform specific detection on the leakage rate. Similarly, the staff cannot judge the leakage degree of the pressure pipeline based on the detection results. To this end, we propose a pressure pipeline leakage detection device. Utility Model Content

[0004] The utility model aims to provide a pressure pipeline leakage detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure pipeline leakage detection device, comprising a shell, a vent hole arranged on one side of the shell and a cylinder fixed to the outer wall of the shell, the vent hole and the cylinder are communicated with each other, and a telescopic column is slidably connected to the other side of the cylinder, the outer wall of the telescopic column is in contact with the inner wall of the cylinder, and a limit slider is fixedly connected to the outer wall of the telescopic column, the inner surface of the cylinder is provided with a slide groove for directional sliding of the limit slider, and a contact rotation speed sensor is fixedly installed on one side of the cylinder.

[0006] Preferably, the housing comprises a first shell, a second shell, a first assembly sheet, a second assembly sheet, a sealing strip and a groove.

[0007] Preferably, the first shell and the second shell are both arc-shaped structures, and the first shell and the second shell are symmetrically combined to form a cylindrical outer shell.

[0008] Preferably, the first shell has first assembly pieces integrally formed at the upper and lower ends, and the second shell has second assembly pieces integrally formed at the upper and lower ends.

[0009] Preferably, assembly bolts are inserted through the first assembly sheet and the second assembly sheet.

[0010] Preferably, sealing strips are bonded to the inner walls of both end portions of the first shell and the second shell.

[0011] Preferably, a groove is provided on the inner surface of the shell.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model assembles an outer shell with a leaking section of a pressure pipe so that the gas leaked from the leaking point of the pressure pipe flows into the interior of the cylinder through the vent hole. The air pressure in the closed space formed by the cylinder and the telescopic column rises, thereby pushing the telescopic column to stretch outward. During this process, a limit slider cooperates and slides along the inside of a slide groove to limit the movement of the telescopic column. When the telescopic column in motion contacts a contact-type rotation speed sensor, friction drives the roller of the sensor to rotate, and a rotation pulse sensor mounted on the roller sends out a series of pulses, each pulse representing a certain distance value, thereby measuring the linear speed. While detecting gas leakage in the pressure pipe, the degree of leakage can also be tested.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0019] In the figure: 1. outer shell; 101. first shell; 102. second shell; 103. first assembly sheet; 104. second assembly sheet; 105. sealing strip; 106. groove; 2. assembly bolt; 3. vent hole; 4. cylinder; 5. telescopic column; 6. limit slider; 7. slide groove; 8. contact type rotation speed sensor. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Example

[0025] like Figure 1-3 As shown, a pressure pipe leakage detection device includes a shell 1, a vent hole 3 arranged on one side of the shell 1 and a cylinder 4 fixed to the outer wall of the shell 1, the vent hole 3 and the cylinder 4 are communicated with each other, and a telescopic column 5 is slidably connected to the other side of the cylinder 4, the outer wall of the telescopic column 5 fits the inner wall of the cylinder 4, and a limit slider 6 is fixedly connected to the outer wall of the telescopic column 5, the inner surface of the cylinder 4 is provided with a slide groove 7 for directional sliding of the limit slider 6, and a contact rotation speed sensor 8 is fixedly installed on one side of the cylinder 4.

[0026] The housing 1 comprises a first shell 101, a second shell 102, a first assembly piece 103, a second assembly piece 104, a sealing strip 105 and a groove 106. The first shell 101 and the second shell 102 are both arc-shaped structures, and the first shell 101 and the second shell 102 are symmetrically combined to form a cylindrical housing 1. The first shell 101 is integrally formed with a first assembly piece 103 at the upper and lower ends, and the second shell 102 is integrally formed with a second assembly piece 104 at the upper and lower ends. The first assembly piece 103 and the second assembly piece 104 are penetrated with assembly bolts 2. By sleeve-fitting the first shell 101 and the second shell 102 on the outer wall of the pressure pipe section to be inspected, the first assembly piece 103 and the second assembly piece 104 outside the shell are fitted together, and the assembly bolts 2 are penetrated through the first assembly piece 103 and the second assembly piece 104, and nuts are used to tighten and fix the ends of the assembly bolts 2.

[0027] The inner walls of both ends of the first shell 101 and the second shell 102 are bonded with sealing strips 105 ; the sealing strip 105 on the inner side of the edge of the outer shell 1 fits tightly with the outer wall of the pressure pipe to improve the sealing performance.

[0028] The inner surface of the housing 1 is provided with a groove 106 ; the groove 106 provides a flow space for the leaked gas inside the housing 1 .

[0029] It should be noted that the utility model is a pressure pipe leakage detection device. When working, the staff will sleeve the first shell 101 and the second shell 102 on the outer wall of the pressure pipe section to be detected, the first assembly piece 103 and the second assembly piece 104 outside the shell will fit together, and the assembly bolt 2 will pass through the first assembly piece 103 and the second assembly piece 104, and tighten and fix it with a nut at the end of the assembly bolt 2, and the sealing strip 105 on the inner side of the edge of the shell 1 will fit tightly with the outer wall of the pressure pipe, so that the gas leaked from the leakage point of the pressure pipe can pass through the vent hole. 3 flows into the cylinder 4, and the air pressure in the closed space formed by the cylinder 4 and the telescopic column 5 rises, thereby pushing the telescopic column 5 to stretch outward. In this process, the limit slider 6 slides along the inside of the slide groove 7 to limit the movement of the telescopic column 5. When the moving telescopic column 5 contacts the contact type rotation speed sensor 8, the friction force drives the roller of the sensor to rotate, and the rotation pulse sensor installed on the roller sends out a series of pulses, each pulse represents a certain distance value, so that the linear speed can be measured, and the leakage degree can be tested while detecting gas leakage in the pressure pipeline.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure pipeline leakage detection device, comprising a housing (1), characterized in that: It also comprises a vent hole (3) arranged on one side of the shell (1) and a cylinder (4) fixed to the outer wall of the shell (1), the vent hole (3) and the cylinder (4) being in communication with each other, and a telescopic column (5) is slidably connected to the other side of the cylinder (4), the outer wall of the telescopic column (5) is in contact with the inner wall of the cylinder (4), and a limit slider (6) is fixedly connected to the outer wall of the telescopic column (5), the inner surface of the cylinder (4) is provided with a slide groove (7) for the limit slider (6) to slide in a directional manner, and a contact type rotation speed sensor (8) is fixedly installed on one side of the cylinder (4).

2. A pressure pipeline leakage detection device according to claim 1, characterized in that: The housing (1) comprises a first shell (101), a second shell (102), a first assembly sheet (103), a second assembly sheet (104), a sealing strip (105) and a groove (106).

3. A pressure pipeline leakage detection device according to claim 2, characterized in that: The first shell (101) and the second shell (102) are both arc-shaped structures, and the first shell (101) and the second shell (102) are symmetrically combined to form a cylindrical outer shell (1).

4. A pressure pipeline leakage detection device according to claim 3, characterized in that: The first shell (101) has a first assembly piece (103) integrally formed at the upper and lower ends, and the second shell (102) has a second assembly piece (104) integrally formed at the upper and lower ends.

5. A pressure pipeline leakage detection device according to claim 4, characterized in that: Assembly bolts (2) are inserted through the first assembly plate (103) and the second assembly plate (104).

6. A pressure pipeline leakage detection device according to claim 5, characterized in that: Sealing strips (105) are bonded to the inner walls of both ends of the first shell (101) and the second shell (102).

7. A pressure pipeline leakage detection device according to claim 1, characterized in that: The inner surface of the housing (1) is provided with a groove (106).

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