Gas pipeline interface home-entry detection device

Abstract

The utility model provides a gas pipeline interface home-entry detection device which comprises two oppositely arranged shells, when the two shells are combined, a cavity can be defined, the cavity is provided with a pipeline connecting part and a detection access port, the pipeline connecting part comprises a wrapping part arranged on one shell and two buckling parts arranged on the other shell, and the two buckling parts are connected with the detection access port. The buckling parts are arranged at the two ends of the pipeline connecting part respectively, and one shell is provided with an airflow guide face. A detection head of the detection device body can extend into the cavity and can be in contact with the airflow guide surface. According to the utility model, the detection head and the part to be detected are surrounded in the cavity by adopting a mode that the two shells are matched, and when gas leakage occurs at the joint of the pipeline, gas can be guided to the direction of the detection head by the gas flow guide surface because the gas density is smaller than the air density; meanwhile, the pipeline and the detection head are connected through the shell, so that the posture that the detection personnel hold the detection head to stretch forwards is omitted, and the physical output of the detection personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of gas inspection, in particular to a gas pipeline interface household inspection auxiliary device. Background Art

[0002] Natural gas is an important fuel for residents' production and life, but due to its flammable and explosive characteristics, special attention needs to be paid during its use. In order to ensure the safety of residents' gas use, relevant departments also conduct regular home inspections to check for leaks in gas pipelines and gas stoves in the house. During the inspection, the detection head needs to be placed close to the pipeline, and patrol around the pipeline interface for detection. At the same time, there must be a period of stay to ensure that the detection head can fully capture the substances in the air at the pipeline interface. However, in order to meet the needs of use and aesthetics, many residents hide their indoor gas pipelines in pipe wrappings, gas stoves or floor cabinets. Since most of the pipes wrapped are longitudinally arranged, most of them are whole pipes that go directly into the house, which greatly avoids the possibility of gas leakage. However, for the horizontal pipe part, most of them are added later to relocate the stove position. They have added some connection nodes and need to be connected to the gas hose, which is more likely to cause leakage. Since the horizontal pipe part is mostly placed inside the cabinet and the distance between the cabinet is small, it is inconvenient for the personnel entering the house to extend the detection head of the gas detection equipment close to the pipeline; and since the distance between the pipeline and the wall is small, the thickness of the cabinet back panel is increased, resulting in a small distance between the gas pipeline and the back panel. For some pipelines close to the cabinet back panel or one side of the wall, it is not convenient for the detection head itself to be inserted into the back of the pipeline for inspection. The above situations have caused troubles to the inspection. Moreover, after the inspectors extend the detection head into the cabinet, due to limited conditions, the inspectors' arms need to keep extending forward, which is more likely to cause fatigue to the inspectors. It is inevitable that the inspectors will become irritable. As a result, after a long period of work, there is a large gap between the detection head of the detection device and the pipeline. When a small amount of leakage occurs at the connection node of the pipeline, it will quickly disperse in the surrounding air, resulting in the detection device being unable to capture the leaked natural gas in time, causing uncertainty in the inspection process and results, and posing a safety hazard. Utility Model Content

[0003] In view of this, the utility model aims to provide a gas pipeline interface household detection auxiliary device to reduce the fatigue of inspectors and facilitate the inspection of gas pipelines.

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

[0005] A gas pipeline interface household detection device, comprising

[0006] Two shells are arranged opposite to each other, the two shells can be close to or away from each other, and when the two shells are close to each other, they can surround and form a cavity, the cavity is provided with a pipeline connection part and a detection access port, the pipeline connection part includes a wrapping part arranged on one of the shells and two buckling parts arranged on the other shell, the buckling parts are respectively arranged at both ends of the pipeline connection part; one of the shells is provided with an airflow guide surface;

[0007] The detection device body has a detection head which can extend into the detection access port and be connected to the shell, and the detection head can contact the airflow guide surface.

[0008] Furthermore, the airflow guiding surface and the buckling portion are placed on the same shell.

[0009] Furthermore, arc-shaped limiting edges are respectively provided at both ends of the wrapping portion and the buckling portion, and the limiting edges at the same end of the wrapping portion and the buckling portion can be spliced ​​together to form a ring.

[0010] Furthermore, a blocking surface is provided on one of the shells, and the blocking surface can extend into the rear side of the gas pipeline.

[0011] Furthermore, the blocking surface and the airflow guiding surface are connected to form a whole.

[0012] Furthermore, the cross-sections of the wrapping portion and the buckling portion are both arc-shaped, and the diameter of the circle where the wrapping portion and the buckling portion are located is greater than the diameter of the circle where the limiting edge is located.

[0013] Furthermore, a magnetic strip is provided on the edge of one of the shells, and the two shells can be attracted and connected as a whole through the magnetic strip.

[0014] Furthermore, a connecting portion is provided at the detection inlet, and the connecting portion includes two connecting pieces arranged opposite to each other, and the two connecting pieces are placed around the detection head and clamp the detection head.

[0015] Furthermore, one of the connecting pieces is connected to one of the shells as a whole.

[0016] Furthermore, a short shaft is respectively provided on both sides of the connecting portion, and one of the shells is rotatably connected to the connecting portion via the short shaft.

[0017] Furthermore, one of the shells has a paddle extending outwardly from one end close to the pipe connecting portion.

[0018] Furthermore, the detection head is placed above the pipeline connecting part.

[0019] Compared with the prior art, the gas pipeline interface household detection device described in the utility model has the following advantages:

[0020] The utility model adopts the method of wrapping two shells to enclose the detection head of the detection device and the part to be detected of the gas pipe in a cavity. When a gas leak occurs at the interface of the pipeline, since the density of the gas is less than the density of the air, the gas can be guided by the airflow guide surface to the direction of the detection head, so that the detection head can sense the gas; at the same time, since the pipeline and the detection head are connected by the shell, the posture of the detection personnel holding the detection head and stretching forward is omitted, which reduces the physical consumption of the detection personnel;

[0021] The limiting edges are set on both sides of the pipeline connection to prevent the possible leakage of natural gas from floating out of the cavity directly from both sides of the pipeline connection, affecting the detection results;

[0022] A pick is used to facilitate the inspector to open the two shells. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 It is a schematic diagram of the overall structure of the home entry detection device;

[0025] Figure 2 It is a schematic diagram of the explosion of two shells;

[0026] Figure 3 It is a schematic diagram of the combined structure of two shells;

[0027] Figure 4 It is a cross-sectional schematic diagram of the matching structure of the shell and the detection head.

[0028] Description of reference numerals:

[0029] 1-shell; 1A-first shell; 11-blocking surface; 12-airflow guiding surface; 13-fastening part; 14-paddle; 15-hinge ear; 1B-second shell; 16-wrapping part; 17-connecting surface; 18-limiting edge; 19-magnetic strip; 2-connector; 21-connecting piece; 22-fixing ear; 23-short axis; 3-detection head; 4-cavity; 41-pipeline connecting part; 42-detection access port. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] The gas pipeline interface household detection device described in the utility model is mainly used to assist the existing detection device, which includes two shells 1 arranged opposite to each other, the two shells 1 can be close to or away from each other, and when the two shells 1 are close to each other, they can surround and form a cavity 4, and the cavity 4 is provided with a pipeline connecting portion 41 and a detection access port 42. Specifically, in this embodiment, the two shells 1 are respectively a first shell 1A1 and a second shell 1B1, and the first shell 1A1 includes a blocking surface 11 and an airflow guide surface 12, and the blocking surface 11 can extend into the rear of the pipeline to be detected. The second shell 1B1 comprises a wrapping portion 16, the cross section of the wrapping portion 16 is arc-shaped, and the two ends of the wrapping portion 16 can be respectively connected with the two buckling portions 13 to form an annular structure, and the wrapping portion 16, the blocking surface 11 and the two buckling portions 13 constitute a pipeline connecting portion 41, and the two annular structures of the pipeline connecting portion 41 can be respectively placed on both sides of the gas pipeline connection node. An arc-shaped limiting edge 18 extends inward from the wrapping portion 16 and the buckling portion 13 respectively, and the limiting edges 18 of the buckling portion 13 and the wrapping portion 16 located at the same end can form a circular ring, and the diameter of the circle where the wrapping portion 16 and the buckling portion 13 are located is larger than the diameter of the circle where the limiting edge 18 is located. In use, the wrapping portion 16 is placed below the pipeline, and the buckling portion 13 is placed above the pipeline. When a gas leak occurs at the node of the gas pipeline, since the density of natural gas is less than the density of air, the natural gas flows upward along the airflow guide surface 12. By arranging the limiting edges 18 at both ends of the connection node, the leaked natural gas is prevented from floating out of the cavity from both sides of the pipeline connection portion 41, so that the natural gas cannot reach the top of the cavity.

[0035] The detection device body (not shown in the figure) used in this embodiment is a portable natural gas detector, and its detection head 3 can be extended into the cavity 4 through the detection access port 42. Specifically, the top of the airflow guide surface 12 of the first shell 1A1 shrinks inward to form a semicircular structure, and the wrapping portion 16 of the second shell 1B1 extends obliquely upward to form a connecting surface 17, and the top of the connecting surface 17 shrinks inward to form a semicircular structure, so that the first shell 1A1 and the second shell 1B1 are spliced ​​to form an annular structure at the top of the cavity, and the detection head 3 is extended into the cavity through the annular structure, so that the detection head 3 is above the pipeline connection portion 41, and the detection head 3 is close to or even tightly attached to the airflow guide surface 12, so that the detection head 3 can detect the natural gas flowing to the top along the airflow guide surface 12. A connector 2 is provided at the detection access port 42. The connector 2 includes two oppositely arranged connecting pieces 21. The two connecting pieces 21 are placed around the detection head 3 and clamp the detection head 3. Specifically, the two connecting pieces 21 extend outwardly with fixing ears 22 respectively, and the two connecting pieces 21 can be clamped and fixed by bolts passing through the fixing ears 22 and cooperating with nuts. One of the connecting pieces 21 is connected to the second shell 1B1 as a whole, and a short shaft 23 is extended outwardly from both ends of the other connecting piece 21. The top of the first shell 1A1 extends hinged ears 15 to both sides, so that the first shell 1A1 and the connecting part are rotatably connected through the short shaft 23. The hinged ears 15 can be metal strips fixed on both sides of the first shell 1A1 by welding or other methods, and the ends of the metal strips are bent and formed so that the ends of the metal strips are wrapped around the side of the short shaft 23.

[0036] A magnetic strip 19 is provided at the edge of the pipe connection portion 41 of the second shell 1B1 , and the two shells 1 can be attracted and connected as a whole through the magnetic strip 19 , wherein a paddle 14 extends outwardly from one end of the first shell 1A1 close to the pipe connection portion 41 . During use, the technicians in this field first install the two shells 1 on the detection head 3 of the detection device body through the connecting head 2, and hold the hose part of the detection head 3 to send the shell 1 into the node of the gas pipeline, put the paddle 14 on the gas pipeline, and push the detection head 3 downward to overcome the attraction of the magnet to open the two shells 1, and then continue to extend forward so that the wrapping part 16 of the second shell 1B1 is placed below the part to be tested, rotate the second shell 1B1 so that the wrapping part 16 of the second shell 1B1 moves upward and approaches the first shell 1A1, and the two shells 1 are completely spliced ​​together through the attraction of the magnet. At the same time, through the supporting force of the pipeline connection part 41 and the overlap of the pipeline, the inspector does not have to support the detection head 3 with his hands, so as to save the inspector's physical strength, and at the same time better collect the natural gas that may leak in the pipeline, so as to ensure the effectiveness of the inspection and the safety of residents' gas use. When there is indeed a gas leak at the node of the gas pipeline, when natural gas leaks out of the node of the gas pipeline, since the connection surface 17, the guide surface, the wrapping part 16, the blocking surface 11 and the limiting edge 18 are respectively placed around the gas pipeline node, the leaked gas can move upward through the airflow guide surface 12, and the alarm is sounded after the natural gas is contacted by the detection head 3. After splicing, there may be gaps between the two shells 1 and between the shell 1 and the gas pipeline. Since most of the leaked natural gas moves upward under the guidance of the airflow guide surface 12, and during the detection, the shell 1 can be shaken left and right to check more positions, the gaps at the edges of the two shells 1 will not affect the inspection results.

[0037] 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 interface household detection device, characterized in that: include Two shells are arranged opposite to each other, the two shells can be close to or away from each other, and when the two shells are close to each other, they can surround and form a cavity, the cavity is provided with a pipeline connection part and a detection access port, the pipeline connection part includes a wrapping part arranged on one of the shells and two buckling parts arranged on the other shell, the buckling parts are respectively arranged at both ends of the pipeline connection part; wherein An airflow guide surface is provided on a housing; The detection device body has a detection head which can extend into the detection access port and be connected to the shell, and the detection head can contact the airflow guide surface.

2. A gas pipeline interface household detection device according to claim 1, characterized in that: The airflow guiding surface and the buckling portion are arranged on the same shell.

3. A gas pipeline interface household detection device according to claim 1, characterized in that: The two ends of the wrapping portion and the buckling portion are respectively provided with arc-shaped limiting edges, and the limiting edges at the same end of the wrapping portion and the buckling portion can be spliced ​​together to form a ring.

4. A gas pipeline interface household detection device according to claim 1, characterized in that: A blocking surface is provided on one of the shells, and the blocking surface can extend into the rear side of the gas pipeline.

5. A gas pipeline interface household detection device according to claim 4, characterized in that: The blocking surface and the airflow guiding surface are connected to form a whole.

6. A gas pipeline interface household detection device according to claim 3, characterized in that: The cross-sections of the wrapping portion and the buckling portion are both arc-shaped, and the diameter of the circle where the wrapping portion and the buckling portion are located is greater than the diameter of the circle where the limiting edge is located.

7. A gas pipeline interface household detection device according to claim 1, characterized in that: A magnetic strip is provided on the edge of one of the shells, and the two shells can be attracted and connected into a whole through the magnetic strip.

8. A gas pipeline interface household detection device according to claim 1, characterized in that: A connecting portion is provided at the detection inlet, and the connecting portion includes two connecting pieces arranged opposite to each other, and the two connecting pieces are placed around the detection head and clamp the detection head.

9. A gas pipeline interface household detection device according to claim 8, characterized in that: One of the connecting pieces is connected to one of the shells as a whole.

10. A gas pipeline interface household detection device according to claim 8, characterized in that: A short shaft is respectively arranged on both sides of the connecting part, and one of the shells is rotatably connected to the connecting part through the short shaft.

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