Gas pipe network inspection well internal leakage detection device

Abstract

The utility model provides a gas pipe network inspection well internal leakage detection device, which comprises a gas detection device body and an extension pipe, the extension pipe comprises a connecting end and an air suction end, a detection head of the gas detection device can extend into the connecting end of the extension pipe, one side of the connecting end is further connected with an air inlet pipe, and the air inlet pipe is connected with an air outlet pipe. An acute angle is formed between the axial direction of the air inlet pipe and the axial direction of the connecting pipe, the air inlet direction faces the direction of the connecting end, the connecting end is further provided with an air outlet, and the detection head is arranged between the air outlet and the air inlet pipe; the air supply device communicates with the air inlet pipe. According to the gas detection device disclosed by the utility model, by adopting the extension pipe, an inspector can conveniently extend the extension pipe into the bottom of a tube well, and gas at the connecting end flows to form a low-pressure area by utilizing the air supply device, so that air in the tube well is sucked by the suction end to enter the extension pipe; therefore, the gas in the tube well is checked, whether natural gas exists in the pipeline is judged, and whether the pipeline leaks or not is judged.

Description

Technical Field

[0001] The utility model belongs to the field of gas pipe network inspection, and in particular relates to a fixing device for collecting images in motion. Background Art

[0002] Natural gas is an important fuel for residents' production and life, but due to its flammable and explosive characteristics, special attention should be paid during the transmission and transportation process. The natural gas used in cities is now generally transported to every household through gas pipelines. In order to ensure the safe use of the gas pipeline network, gas inspectors need to regularly check each pipe well node to prevent leakage and other safety hazards at the connection points of the pipeline network. Now in the inspection process, due to the drop of about 1m between the pipeline at the bottom of the pipe well and the wellhead, the induction probe of the gas alarm used in the inspection cannot quickly reach the vicinity of the pipeline interface. In each inspection, the operator needs to kneel at the wellhead and extend the induction probe of the detection instrument into the well to detect the atmosphere in the well. This causes inconvenience to the work of the inspectors, and because some pipe wells are set in the middle of the road, when the inspectors are in a lower position, it is not easy for the driver to find the inspectors, which is more likely to be dangerous than standing. Utility Model Content

[0003] In view of this, the utility model aims to provide a gas pipeline network inspection well leakage detection device, which makes it more convenient for inspection personnel to detect the ambient atmosphere environment in the pipeline well.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A gas pipeline network inspection well leakage detection device, comprising

[0006] A gas detection device body and an extension tube, wherein the extension tube includes a connection end and an air intake end, the detection head of the gas detection device can be inserted into the connection end of the extension tube, and an air inlet pipe is also connected to one side of the connection end, an acute angle is formed between the axial direction of the air inlet pipe and the axial direction of the connection end, and the air inlet direction is toward the connection end, the connection end is also provided with an air outlet, and the detection head is located between the air outlet and the air inlet pipe;

[0007] The air supply device is communicated with the air inlet pipe.

[0008] Furthermore, the leakage detection device also includes a connecting head, the pipe mouth of the connecting end is threaded, the connecting head includes two connecting plates arranged opposite to each other, and the two connecting plates are arc-shaped, which are respectively arranged on the peripheral sides of the detection head, and a limiting edge extends on one side of each connecting plate, and the spacing between the limiting edges is smaller than the diameter of the detection head, and the two connecting plates are threaded to match the connecting end.

[0009] Furthermore, the two connecting pieces can surround and form a ring.

[0010] Furthermore, fixing ears are extended outwardly from both ends of each connecting piece, and the two opposite fixing ears can be fixed by bolts.

[0011] Furthermore, the air outlet is opened on the side wall of the connecting end.

[0012] Furthermore, a short tube is extended from the connection end to one side, and the air outlet is disposed on the short tube.

[0013] Furthermore, the air intake end is connected to a control rod, one end of the control rod is fixedly connected to the air intake end, and the other end of the control rod extends toward the connection end.

[0014] Furthermore, a connecting hoop is provided on the air intake end, and the connecting hoop includes a tube connecting portion and a rod connecting portion, and the rod connecting portion is fixedly connected to the tube connecting portion.

[0015] Furthermore, the rod connecting portion is in an arc shape, and fixing portions are extended outwardly from both ends of the rod connecting portion, and the two fixing portions can be fixedly connected by bolts.

[0016] Furthermore, the pipe connecting portion is in an arc shape, and fixing portions extend outwardly from both ends of the pipe connecting portion, and the two fixing portions can be fixedly connected by bolts.

[0017] Compared with the prior art, the gas pipeline network inspection well leakage detection device described in the utility model has the following advantages:

[0018] The utility model adopts an extension pipe so that the inspection personnel can extend the extension pipe into the bottom of the pipe well, and use the air supply device to make the gas flow at the connection end to form a low-pressure area, so that the air at the suction end flows to the connection end, thereby sucking the air in the pipe well into the extension pipe. Since the gas will pass through the detection head of the gas detection device body during the flow process, the gas in the pipe well can be checked by the gas detection device to determine whether there is natural gas in the pipeline, and then determine whether there is a leakage in the pipeline;

[0019] Two connecting pieces are used to form a connecting head and a connecting end, and the detection head is connected to the extension tube, so that the inspection personnel can use it easily.

[0020] A control rod is connected to the end of the extension pipe to facilitate inspection personnel to control the position of the suction end above the pipe shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the detection device;

[0023] Figure 2 It is an exploded schematic diagram of the matching state between the detection head and the connection end of the detection device body;

[0024] Figure 3 A schematic diagram of a connection end when the air outlet is arranged on the side wall of the connection end;

[0025] Figure 4 Schematic diagram of the connecting hoop structure.

[0026] Description of reference numerals:

[0027] 1-extension tube; 11-connecting end; 111-air outlet; 112-air inlet pipe; 12-intake end; 2-connecting head; 21-connecting piece; 22-limiting edge; 23-fixing ear; 3-detection head; 4-control rod; 5-connecting hoop; 51-rod connecting part; 52-tube connecting part; 53-fixing part. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] The gas pipe network inspection well leakage detection device described in the utility model includes a gas detection device body (not shown in the figure), an extension tube 1 and a connector 2. In this embodiment, the gas detection device used is a portable combustible gas detector, and its detection end and the detection head 3 are connected by a tube. The extension tube 1 includes a connection end 11 and an air intake end 12. In this embodiment, in order to facilitate operation and control, the connection end 11 is a hard tube, which can be made of metal or hard plastic. It is connected to the air intake end 12 through a section of hose, which can be a rubber hose or a corrugated hose, etc. The hard tube and the hose can be connected by flanges, plug-in, integral injection molding and other methods. The connecting end 11 is provided with a thread, and the connecting head 2 includes two connecting pieces 21, and the two connecting pieces 21 are respectively arc-shaped. When the two connecting pieces 21 are arranged opposite to each other, they can be combined to form a ring, and a thread matching the thread of the connecting end 11 is provided inside the ring, so that the connecting head 2 can be screwed with the connecting end 11, and an arc-shaped end face of the two connecting pieces 21 respectively extends inward to form a limiting edge 22, and the two limiting edges 22 can be arc-shaped or flat plate-shaped, and the maximum spacing between the two limiting edges 22 is larger than the outer diameter of the official between the detection end and the detection head 3 of the portable combustible gas detector, and smaller than the diameter of the detection head 3, so that the detection head 3 can be extended into the connecting end 11 and the connection end 11 and the connecting head 2 will not cause the detection head 3 and the extension tube 1 to fall off after being assembled, thereby facilitating the inspector to take, control and carry. The two ends of the two connecting pieces 21 extend outwardly with fixing ears 23, through holes are provided on the fixing ears 23, and the two connecting pieces 21 are connected as a whole by bolts passing through the fixing ears 23, so that the two connecting pieces 21 surround and form a ring. An air inlet pipe 112 is also connected to one side of the connecting end 11, and the axial direction of the air inlet pipe 112 and the axial direction of the connecting end are arranged at an acute angle, and the air inlet direction is toward the connecting end 11. The connecting end 11 is also provided with an air outlet 111, and the detection head 3 is between the air outlet 111 and the air inlet pipe 112. In this embodiment, the air outlet 111 can be a gap between the limiting edge 22 and the pipe of the portable combustible gas detector. Optionally, the air outlet 111 can also be an opening on the pipe wall of the connecting end 11, or a short pipe extending outward from the connecting end 11, and the pipe mouth of the short pipe is the air outlet 111; the hose is arranged on the side of the air inlet pipe 112 away from the air outlet 111.

[0033] The gas pipeline inspection well leakage detection device described in the utility model also includes an air supply device. In the present embodiment, the air supply device can be a small blower, and the blower is connected to the air inlet pipe 112, so that external air enters the extension pipe 1 through the air inlet pipe 112, so that the air flow speed at the connecting end 11 is faster, the air pressure at the connecting end 11 is reduced, and the gas at the suction end 12 flows toward the low pressure direction, so that the suction end 12 can absorb the surrounding gas into the extension pipe 1 and transport the gas toward the connecting end 11. The air supply device can be optionally a small fan, which blows the outside air to the air inlet pipe 112 through the fan, so as to achieve the purpose of gas flowing in the extension pipe 1. Those skilled in the art should know that when a blower is used for air supply, the speed at which the blower transports air can be controlled by controlling the power of the blower to prevent the detection head 3 of the gas detection device body from being damaged due to excessive airflow.

[0034] The air intake end 12 is connected to a control rod 4, one end of the control rod 4 is fixedly connected to the air intake end 12, and the other end extends toward the connection end 11. The inspection personnel can hold the control rod 4 so that the air intake head can absorb air at different positions of the pipe well after being inserted into the pipe well, thereby performing a more detailed inspection of each pipe connection in the pipe well. Specifically, a connecting hoop 5 is provided on the air intake end 12, and the connecting hoop 5 includes a pipe connection portion 52 and a rod connection portion 51, and the rod connection portion 51 is fixedly connected to the pipe connection portion 52. The rod connection portion 51 and the pipe connection portion 52 are respectively in the shape of a major arc, and the two ends of the rod connection portion 51 and the pipe connection portion 52 extend outwardly to form a fixing portion 53. The two fixing portions 53 of the same connection head 2 can be fixedly connected by bolts and nuts, so that the major arc is tightened, thereby fixing the control rod 4 or the extension pipe 1.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas pipeline network inspection well leakage detection device, characterized in that: include A gas detection device body and an extension tube, wherein the extension tube includes a connection end and an air intake end, the detection head of the gas detection device can be inserted into the connection end of the extension tube, and an air inlet pipe is also connected to one side of the connection end, an acute angle is formed between the axial direction of the air inlet pipe and the axial direction of the connection end, and the air inlet direction is toward the connection end, the connection end is also provided with an air outlet, and the detection head is located between the air outlet and the air inlet pipe; The air supply device is communicated with the air inlet pipe.

2. A gas pipeline network inspection well leakage detection device according to claim 1, characterized in that: It also includes a connecting head, the pipe mouth of the connecting end is threaded, the connecting head includes two connecting plates arranged opposite to each other, and the two connecting plates are arc-shaped, which are respectively on the peripheral sides of the detection head, and a limiting edge extends on one side of each connecting plate, and the spacing between the limiting edges is smaller than the diameter of the detection head, and the two connecting plates are provided with threads matching the connecting end.

3. A gas pipeline network inspection well leakage detection device according to claim 2, characterized in that: The two connecting pieces can surround and form a ring.

4. A gas pipeline network inspection well leakage detection device according to claim 2, characterized in that: Fixing ears are respectively extended outwardly from both ends of each connecting piece, and the two opposite fixing ears can be fixed by bolts.

5. A gas pipeline network inspection well leakage detection device according to claim 1, characterized in that: The air outlet is arranged on the side wall of the connecting end.

6. A gas pipeline network inspection well leakage detection device according to claim 1, characterized in that: A short tube is extended from the connecting end to one side, and the air outlet is arranged on the short tube.

7. A gas pipeline network inspection well leakage detection device according to claim 1, characterized in that: The air intake end is connected to a control rod, one end of the control rod is fixedly connected to the air intake end, and the other end of the control rod extends toward the connection end.

8. A gas pipe network inspection well leakage detection device according to claim 7, characterized in that: The air intake end is provided with a connecting hoop, which comprises a tube connecting portion and a rod connecting portion, and the rod connecting portion is fixedly connected to the tube connecting portion.

9. A gas pipeline network inspection well leakage detection device according to claim 8, characterized in that: The rod connecting part is in an arc shape, and fixing parts are extended outward from both ends of the rod connecting part, and the two fixing parts can be fixedly connected by bolts.

10. A gas pipe network inspection well leakage detection device according to claim 8, characterized in that: The pipe connecting part is in an arc shape, and fixing parts are extended outward from both ends of the pipe connecting part, and the two fixing parts can be fixedly connected by bolts.

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