Gas pipeline inspection equipment

Abstract

The utility model discloses fuel gas pipeline inspection equipment, which belongs to the field of fuel gas pipeline detection and comprises a detection sleeve for fuel gas pipeline inspection, a pipeline cleaning mechanism is arranged on the detection sleeve and used for performing inspection pretreatment on the surface of a fuel gas pipeline, and a fuel gas detection mechanism is arranged in the detection sleeve and used for detecting leakage points of the fuel gas pipeline. According to the utility model, the detection measuring cylinder carrying the gas pressure detection diaphragm is matched with the gas detector body, so that when a gas pipeline leaks, the gas pressure detection diaphragm is converted from a concave state to an upward convex state, and the state is visually reflected by detecting the change of the liquid level in the measuring cylinder, thereby reminding an inspector that a gas leakage point possibly exists at the position; and then a detection head of the fuel gas detector body is opened to detect the increased fuel gas concentration, so that the detection precision of the detection sleeve on the fuel gas pipeline is improved through cooperation of gas pressure detection of the detection sleeve and dual detection of the fuel gas detector body.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline inspection technology, and in particular to a gas pipeline inspection device. Background Technology

[0002] Gas fuels are a general term for gaseous fuels that release heat through combustion for use by urban residents and industrial enterprises. They mainly consist of natural gas, manufactured gas, liquefied petroleum gas, biogas, and coal gas. Gas pipelines refer to the pipelines that transport gas from processing plants to industries, enterprises, and users. To ensure the safe and stable operation of gas pipelines, regular inspections are required.

[0003] When conducting indoor inspections of gas pipelines, gas detectors are often used to check the pipelines. However, the gas detectors currently used for gas pipeline inspections directly detect the air around the pipeline using a probe. This detection method can cause the gas concentration around the pipeline to drop below the concentration detected by the gas detector due to the spread of leaked gas in the indoor space, thus affecting the inspection results.

[0004] Therefore, a gas pipeline inspection device is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the existing technology, gas detectors directly detect the air around gas pipelines through the probe head, and the gas concentration drops below the detector's detection concentration due to gas leakage in the indoor space, affecting the inspection results and causing misjudgments. Therefore, a gas pipeline inspection device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas pipeline inspection device includes a gas pipeline inspection sleeve. The sleeve has a hinge at its rotating part, and the rotation angle is fixed by bolts. A gas detector body is fixedly installed at the bottom of the sleeve. A pipeline cleaning mechanism is provided on the sleeve for pre-treatment of the gas pipeline surface. A gas detection mechanism is provided inside the sleeve for detecting leaks in the gas pipeline.

[0008] The pipeline cleaning mechanism includes a pipeline pretreatment sleeve rotatably connected to one end of the detection sleeve. An inclined cleaning wheel and a wetting wheel are rotatably connected to the inner wall of the pipeline pretreatment sleeve. A cleaning liquid pipe is provided on the pipeline pretreatment sleeve. The cleaning liquid pipe is sealed to the outer surface of the wetting wheel through a connecting pipe.

[0009] The gas detection mechanism comprises a detection cylinder slidably connected to the inside of a detection sleeve, the bottom of the detection cylinder is fixed with a gas pressure detection diaphragm, the outer surface of the detection sleeve is slidably connected with a sealing sliding plug, and the detection sleeve is slidably connected with an inclined driving column at one end, and the inclined driving column is provided with a sealing pad close to the axis of the detection sleeve.

[0010] Preferably, the pipeline pretreatment sleeve is composed of a treatment cylinder and a treatment auxiliary cylinder, and the treatment cylinder is connected with the treatment auxiliary cylinder through a plug joint.

[0011] Preferably, two cleaning liquid pipes are provided, and the two cleaning liquid pipes are symmetrically arranged, and the end of the communication pipe is provided with an arc-shaped sealing groove matched with the wetting wheel.

[0012] Preferably, the detection cylinder contains fluorescent liquid, and the surface of the detection cylinder is marked with a detection scale.

[0013] Preferably, the sealing sliding plug is slidably connected with the inclined driving column away from the axis of the detection sleeve through a driving sliding block, and the contact surface of the sealing sliding plug and the inclined driving column is provided as an inclined surface.

[0014] Preferably, the sealing pad is made of soft material, and the sealing pad is provided in a semicircular ring shape.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. By means of the detection cylinder loaded with the gas pressure detection diaphragm cooperating with the gas detection instrument body, when the gas pipeline leaks, the gas pressure detection diaphragm can be converted from the concave state to the convex state, and the liquid level change in the detection cylinder can be directly reflected, so as to remind the inspector that there may be a gas leakage point here, then the detection head of the gas detection instrument body is opened to detect the elevated gas concentration, and the double detection of the detection sleeve gas pressure detection and the gas detection instrument body improves the detection accuracy of the detection sleeve on the gas pipeline.

[0017] 2. By means of the pipeline pretreatment sleeve loaded with the oblique cleaning wheel, the wetting wheel and the cleaning liquid pipe cooperating with the detection sleeve, the oblique cleaning wheel and the wetting wheel can be driven to contact the outer surface of the gas pipeline during the travel of the detection sleeve, so that the large dirt adhered to the surface of the gas pipeline can be cleaned and pretreated, and the subsequent sliding of the gas detection mechanism is facilitated, and the sealing pad will not be cut to affect the sealing property of the detection sleeve during detection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic view of a gas pipeline inspection equipment is provided for the utility model;

[0019] Figure 2The utility model provides a kind of overall structure of gas pipeline inspection equipment decomposition schematic view is proposed for the utility model;

[0020] Figure 3 A kind of internal structure section schematic view of processing cylinder and cleaning liquid pipe in the gas pipeline inspection equipment proposed for the utility model;

[0021] Figure 4 The structure schematic view of adjacent oblique cleaning wheel and wet wheel in the gas pipeline inspection equipment proposed for the utility model;

[0022] Figure 5 The internal structure section schematic view of detection sleeve in the gas pipeline inspection equipment proposed for the utility model;

[0023] Figure 6 The utility model Figure 5 The enlarged schematic view of structure A in the utility model;

[0024] Figure 7 The structure explosion view of closed sliding plug, inclined drive column and closed pad in the gas pipeline inspection equipment proposed for the utility model.

[0025] In the figure: 1, detection sleeve;2, gas detector body;3, pipeline pretreatment sleeve;31, oblique cleaning wheel;32, wet wheel;33, cleaning liquid pipe;34, processing cylinder;341, plug-in head;35, processing vice cylinder;4, detection cylinder;41, gas pressure detection diaphragm;5, closed sliding plug;51, drive sliding block;6, inclined drive column;7, closed pad. Specific embodiments

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model below, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0027] Embodiment one

[0028] Refer to Figures 1 to 7 A kind of gas pipeline inspection equipment, including the detection sleeve 1 for gas pipeline inspection, hinged joint is provided at the rotation of detection sleeve 1, and detection sleeve 1 is fixed by bolt rotation angle, the bottom of detection sleeve 1 is fixedly installed with gas detector body 2, pipeline cleaning mechanism is arranged on detection sleeve 1, for carrying out the inspection pretreatment to the surface of gas pipeline, gas detection mechanism is arranged in detection sleeve 1, for detecting the leakage point of gas pipeline;

[0029] It should be noted that: the gas detector body 2 is also provided with a detection head located in the detection sleeve 1, which can capture the leaked gas in the detection sleeve 1, which is the existing gas detection technology. In the following, the process of how the gas detector body 2 detects the gas will not be described.

[0030] As shown in Figures 2 to 3 The pipeline cleaning mechanism includes a pipeline pretreatment sleeve 3 rotatably connected to one end of the detection sleeve 1. The inner wall of the pipeline pretreatment sleeve 3 is rotatably connected with an inclined cleaning wheel 31 and a wetting wheel 32. A cleaning liquid pipe 33 is arranged on the pipeline pretreatment sleeve 3, and the cleaning liquid pipe 33 is sealingly connected with the outer surface of the wetting wheel 32 through a communication pipe.

[0031] Further, the pipeline pretreatment sleeve 3 is composed of a treatment cylinder 34 and a treatment sub-cylinder 35. The treatment cylinder 34 is connected to the treatment sub-cylinder 35 through a plug-in connector 341.

[0032] Further, the cleaning liquid pipe 33 is provided with two symmetrical cleaning liquid pipes 33, and the end of the communication pipe is provided with an arc-shaped sealing groove matched with the wetting wheel 32.

[0033] It should be noted that the pipeline pretreatment sleeve 3 arranged at the front end of the detection sleeve 1 is connected to the treatment sub-cylinder 35 through the plug-in connector 341, which can splice the treatment cylinder 34 and the treatment sub-cylinder 35 into a complete pipeline pretreatment sleeve 3. During the movement of the detection sleeve 1, the inclined cleaning wheel 31 and the inclined wetting wheel 32 are brought into contact with the outer surface of the gas pipeline. At the same time, the reverse force of the inclined cleaning wheel 31 and the wetting wheel 32 in contact with the gas pipeline can drive the pipeline pretreatment sleeve 3 to rotate at the front end of the detection sleeve 1, so that the large dirt adhering to the surface of the gas pipeline can be cleaned and pretreated during the rotation of the wetting wheel 32 and the inclined cleaning wheel 31, providing convenience for the subsequent sliding of the gas detection mechanism, and not cutting the sealing pad 7 to affect the sealing of the detection sleeve 1 during detection.

[0034] The further benefits of the above are that the surface of the inclined cleaning wheel 31 is provided with convex points, which can improve the grip of the inclined cleaning wheel 31 and break the dirt adhering to the gas pipeline, making it easier to scrape the dirt through the cylinder wall of the pipeline pretreatment sleeve 3, completing the dirt cleaning and pretreatment process before the detection of the gas pipeline.

[0035] Based on the above, the wetting wheel 32 arranged in front of the detection sleeve 1 can wet the surface of the gas pipeline, and can also cooperate with the sealing pad 7 to wet the contact surface between the detection sleeve 1 and the gas pipeline, so that the contact part is filled with cleaning liquid to further improve the sealing of the detection space in the detection sleeve 1.

[0036] Based on the embodiment one, the embodiment two is proposed

[0037] As Figures 5 to 7 Figures 5 to 7 shown, the gas detection mechanism includes a detection cylinder 4 slidingly connected inside the detection sleeve 1, the bottom of the detection cylinder 4 is fixed with a gas pressure detection diaphragm 41, the outer surface of the detection sleeve 1 is slidingly connected with a sealing sliding plug 5, one end of the detection sleeve 1 is slidingly connected with an inclined driving column 6, and the inclined driving column 6 is provided with a sealing pad 7 close to the axis of the detection sleeve 1;

[0038] Further, the detection cylinder 4 contains fluorescent liquid, and the surface of the detection cylinder 4 is marked with a detection scale;

[0039] Further, the sealing sliding plug 5 is slidingly connected with the inclined driving column 6 away from the axis of the detection sleeve 1 through a driving sliding block 51, and the contact surface between the sealing sliding plug 5 and the inclined driving column 6 is provided as an inclined surface. When the gas pressure detection diaphragm 41 of the detection cylinder 4 changes, the sealing sliding plug 5 can be pushed towards the inclined driving column 6, so that the inclined driving column 6 extrudes the sealing pad 7, and the detection sleeve 1 is further attached, thereby better improving the sealing of the detection space in the detection sleeve 1;

[0040] Further, the sealing pad 7 is made of soft material, and the sealing pad 7 is provided in a semi-circular ring shape;

[0041] It should be noted that the sealing pad 7 can form a closed space inside the detection sleeve 1, so that when the gas pipeline leaks, the gas pressure in the detection sleeve 1 will increase, the gas pressure detection diaphragm 41 will change from a concave state to a convex state, and the change of the liquid level in the detection cylinder 4 will be directly reflected, thereby reminding the inspector that there may be a gas leakage point here. Then, by opening the detection head of the gas detector body 2, the gas concentration between the detection sleeve 1 and the gas pipeline is detected, so that the detection sleeve 1 and the gas detector body 2 can improve the detection accuracy of the detection sleeve 1 on the gas pipeline through the double detection of the gas pressure detection;

[0042] The further advantage of the above is that when the state of the gas pressure detection diaphragm 41 in the detection sleeve 1 changes, it is also possible that the two straight pipe connection parts are connected. Due to the double pipe connection, the space between the detection sleeve 1 and the gas pipeline becomes smaller, and the gas pressure increases. When the gas pressure detection diaphragm 41 changes from a concave state to a convex state, it indicates that the gas leaked from the gas pipeline in the detection sleeve 1 is sufficient to change the gas pressure in the detection sleeve 1, that is, the gas concentration can be detected by the detection head of the gas detector body 2, avoiding the gas detector body 2 being in standby state all the time, reducing the use time, and reducing the patrol endurance.

[0043] Working principle:

[0044] When in use, this utility model is connected to the processing sub-tube 35 via the connector 341, which can splice the processing tube 34 and the processing sub-tube 35 into a complete pipeline pretreatment sleeve 3. During the movement of the detection sleeve 1, the inclined cleaning wheel 31 and the inclined wetting wheel 32 are driven to contact the outer surface of the gas pipeline. At the same time, the reverse force of the inclined cleaning wheel 31 and the wetting wheel 32 in contact with the gas pipeline can drive the pipeline pretreatment sleeve 3 to rotate at the front end of the detection sleeve 1. Thus, during the rotation of the wetting wheel 32 and the inclined cleaning wheel 31, large pieces of dirt adhering to the surface of the gas pipeline are cleaned and wetted, which facilitates the sliding of the subsequent gas detection mechanism and will not cut the sealing gasket 7, affecting the sealing of the detection sleeve 1 during detection.

[0045] Based on the above, when a gas pipeline leaks, the sealing gasket 7 can create a closed space inside the detection sleeve 1, increasing the gas pressure inside the detection sleeve 1. This causes the gas pressure detection diaphragm 41 to change from a concave state to an convex state, which is visually reflected by the change in the liquid level inside the measuring cylinder 4. This alerts the inspector that there may be a gas leak. Then, by opening the detection head of the gas detector body 2, the gas concentration between the detection sleeve 1 and the gas pipeline is detected. Thus, by combining the gas pressure detection of the detection sleeve 1 with the dual detection of the gas detector body 2, the detection accuracy of the detection sleeve 1 for the gas pipeline can be improved.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gas pipeline inspection device, comprising an inspection sleeve (1) for gas pipeline inspection, characterized in that, The detection sleeve (1) is provided with a hinge at the rotating part, and the rotation angle of the detection sleeve (1) is fixed by bolts. The bottom of the detection sleeve (1) is fixedly installed with a gas detector body (2). The detection sleeve (1) is provided with a pipeline cleaning mechanism for inspection and pretreatment of the gas pipeline surface. The detection sleeve (1) is provided with a gas detection mechanism for detecting the leakage point of the gas pipeline. The pipeline cleaning mechanism includes a pipeline pretreatment sleeve (3) rotatably connected to one end of the detection sleeve (1). An inclined cleaning wheel (31) and a wetting wheel (32) are rotatably connected to the inner wall of the pipeline pretreatment sleeve (3). A cleaning liquid pipe (33) is provided on the pipeline pretreatment sleeve (3). The cleaning liquid pipe (33) is sealed to the outer surface of the wetting wheel (32) through a connecting pipe. The gas detection mechanism includes a detection measuring cylinder (4) slidably connected inside the detection sleeve (1). A gas pressure detection diaphragm (41) is fixed at the bottom of the detection measuring cylinder (4). A sealing plug (5) is slidably connected to the outer surface of the detection sleeve (1). An inclined drive column (6) is slidably connected to one end of the detection sleeve (1), and a sealing pad (7) is provided on the inclined drive column (6) near the axis of the detection sleeve (1).

2. The gas pipeline inspection equipment according to claim 1, characterized in that, The pipeline pretreatment sleeve (3) consists of a treatment sleeve (34) and a treatment auxiliary sleeve (35), wherein the treatment sleeve (34) is connected to the treatment auxiliary sleeve (35) via a plug-in connector (341).

3. The gas pipeline inspection equipment according to claim 1, characterized in that, There are two cleaning fluid pipes (33), and the two cleaning fluid pipes (33) are arranged symmetrically. The end of the connecting pipe is provided with an arc-shaped sealing groove that is compatible with the wetting wheel (32).

4. The gas pipeline inspection equipment according to claim 1, characterized in that, The measuring cylinder (4) contains fluorescent liquid, and the surface of the measuring cylinder (4) is engraved with a measuring scale.

5. A gas pipeline inspection device according to claim 1, characterized in that, The closed slide (5) is slidably connected to the inclined drive column (6) away from the axis of the detection sleeve (1) via the drive slider (51), and the contact surface between the closed slide (5) and the inclined drive column (6) is set as an inclined surface.

6. A gas pipeline inspection device according to claim 1, characterized in that, The sealing pad (7) is made of soft material and is set in a semi-circular shape.

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