Natural gas station pipeline leakage detection equipment

Abstract

The utility model discloses a natural gas station pipeline leakage detection device, which relates to the technical field of natural gas pipeline leakage, and comprises a detection device used for detecting the leakage condition of a natural gas pipeline; the first piston movable block is positioned in the detection equipment and is movably connected with the detection equipment; and the movable assembly is positioned on one side of the second piston movable block and is movably connected with the detection equipment. According to the utility model, passing airflow directly acts on the first piston movable block, the second piston movable block and the third piston movable block respectively according to two groups of interfaces on different first detection tubes, second detection tubes and third detection tubes; the pressure of natural gas exhausted by the natural gas pipeline can be measured according to the impetus borne by the first piston movable block, the second piston movable block and the third piston movable block and the influence of the movement range, and the leakage condition of the leakage end and the size of the leakage gap are speculated through the pressure change.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipeline leakage, in particular to a pipeline leakage detection device used in a natural gas station. Background Art

[0002] Natural gas station pipeline leak detection equipment is mainly used to detect and warn of leaks in natural gas pipelines to ensure the safe operation of the station. These devices use different technical means, such as gas sensors, laser remote sensing detection, etc., to monitor the natural gas concentration in real time. Once the concentration is detected to exceed the safe range, an alarm will be issued immediately so that timely measures can be taken to prevent accidents. These devices are not only suitable for various occasions such as homes, industrial plants, and commercial places, but also have the characteristics of fast response speed, high sensitivity, safety and reliability, are not affected by environmental factors, and can work stably for a long time.

[0003] In order to realize video surveillance of the location and area where abnormal events occur, a pipeline leakage detection system for natural gas stations has been developed (see patent number: 202010391165.1 for details), which includes: an acoustic detection subsystem, a video monitoring subsystem and a main control subsystem; the acoustic detection subsystem adopts a distributed deployment of multiple acoustic sensors and a signal acquisition host, and multiple acoustic sensors cover the station area. The signal acquisition host receives the sound signal of the emergency and uploads it to the main control subsystem; the main control subsystem receives the sound signal of the emergency and detects it to determine whether there is an abnormal event and identify the type of abnormal event; if an abnormal event occurs and the abnormal event is a pipeline leakage, the camera is mobilized for video review and audio and video linkage to record the on-site information, the location of the abnormal event is estimated, and the pipeline leakage is repaired and the acoustic database is updated according to the emergency plan; the video monitoring subsystem includes: a camera and a video server; it is controlled by the main control subsystem.

[0004] However, existing natural gas station pipeline leak detection equipment is not only inconvenient to carry, but also cannot detect the pressure of the natural gas passing through during the leakage detection process, so it is impossible to directly infer the leakage situation at the leakage end, resulting in poor detection effect and reduced utilization rate. Utility Model Content

[0005] The purpose of the utility model is to provide a pipeline leakage detection device for a natural gas station in order to solve the problem that the existing natural gas station pipeline leakage detection equipment is not only inconvenient to carry, but also cannot detect the pressure of the natural gas passing through during the leakage detection process, and thus cannot directly infer the leakage situation of the leakage end, thereby making its detection effect poor and reducing its utilization rate.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a pipeline leakage detection device for a natural gas station, comprising:

[0007] Detection equipment for detecting leaks in natural gas pipelines;

[0008] A first piston movable block is located inside the detection device and is movably connected to the detection device;

[0009] A second piston movable block is located on one side of the first piston movable block and is movably connected to the detection device;

[0010] a movable assembly located on one side of the second piston movable block and movably connected to the detection device, wherein the movable assembly includes a third piston movable block;

[0011] The detection device includes a first detection tube, a second detection tube and a third detection tube, and a three-way tube is provided at the bottom of the first detection tube, the second detection tube and the third detection tube, and a limiting slide rod is provided at one end inside the first detection tube, the second detection tube and the third detection tube. There are three groups of limiting slide rods, and the outsides of the three groups of limiting slide rods are movably connected with the first piston movable block, the second piston movable block and the third piston movable block from left to right in sequence, and one end of the first piston movable block, the second piston movable block and the third piston movable block are all provided with a sliding groove matching the limiting slide rod, and rolling balls are embedded on both sides of the sliding groove.

[0012] As a further solution of the present invention: a connecting rod is provided at one end of the inside of the three-way pipe, and the bottom of the limiting sliding rod is fixedly connected to the top of the connecting rod.

[0013] As a further solution of the present invention: the tops of the first detection tube, the second detection tube and the third detection tube are all provided with interfaces, and the tops of the interfaces are all threadedly connected with caps.

[0014] As a further solution of the present invention: the first piston movable block, the second piston movable block and the third piston movable block are all movably connected to the first detection tube, the second detection tube and the third detection tube respectively through the mutual cooperation of the limiting slide rod and the slide groove.

[0015] As a further solution of the present invention: rolling grooves are provided on both sides of the slide groove, the inner diameter of the rolling groove is larger than the inner diameter of the ball, the inner diameter of the end face of the rolling groove is smaller than the outer diameter of the ball, and the ball is embedded in the rolling groove and is rollingly connected to the rolling groove.

[0016] As a further solution of the present invention: a plurality of sets of scale lines are evenly arranged on one end of the first detection tube, the second detection tube and the third detection tube.

[0017] As a further solution of the present invention: the counterweights of the first piston movable block, the second piston movable block and the third piston movable block increase in sequence from left to right.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. Through the detection equipment and movable components set up, when in use, first open the caps on the first detection tube and the second detection tube, then connect the interface on the top of the first detection tube to the port of the natural gas pipeline, so that the gas discharged from the natural gas pipeline is introduced into the interior through the first detection tube to generate air pressure, and generate a driving force on the first piston movable block inside the first detection tube, causing it to slide along the limit slide rod. If sliding occurs and the sliding range reaches a certain value, it indicates that the natural gas pipeline is not leaking. If it does not reach a certain value, it indicates that the natural gas pipeline has leaked, making its detection more convenient and more convenient to carry.

[0020] 2. By setting up the first piston movable block, the second piston movable block and the third piston movable block, and according to the two sets of interfaces on the first detection tube, the second detection tube and the third detection tube, the passing airflow directly acts on the first piston movable block, the second piston movable block and the third piston movable block respectively. According to the driving force and the influence of the movable range of the first piston movable block, the second piston movable block and the third piston movable block respectively, the natural gas pressure discharged from the natural gas pipeline can be measured. The leakage situation at the leakage end and the size of the leakage gap can be inferred by using the change in air pressure, thereby improving the detection effect and increasing the utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0023] Figure 3 It is a partial three-dimensional diagram of the present utility model.

[0024] In the figure: 1. Detection equipment; 101. First detection tube; 102. Second detection tube; 103. Third detection tube; 104. Limit slide bar; 105. Scale line; 106. Tee; 107. Interface; 108. Cover cap; 2. First piston movable block; 3. Second piston movable block; 4. Movable assembly; 401. Third piston movable block; 402. Slide groove; 403. Rolling ball. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or connected in an integral manner; they can be mechanically connected or electrically connected; they can be directly connected, indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The following describes the embodiments of the present invention based on its overall structure.

[0027] See also Figures 1 to 3 In an embodiment of the present invention, a pipeline leakage detection device for a natural gas station comprises:

[0028] Detection equipment 1, used to detect leakage in natural gas pipelines;

[0029] The first piston movable block 2 is located inside the detection device 1 and is movably connected to the detection device 1;

[0030] The second piston movable block 3 is located on one side of the first piston movable block 2 and is movably connected to the detection device 1;

[0031] The movable assembly 4 is located on one side of the second piston movable block 3 and is movably connected to the detection device 1. The movable assembly 4 includes a third piston movable block 401;

[0032] The detection device 1 includes a first detection tube 101, a second detection tube 102 and a third detection tube 103. A three-way pipe 106 is provided at the bottom of the first detection tube 101, the second detection tube 102 and the third detection tube 103. A limiting slide 104 is provided at one end of the first detection tube 101, the second detection tube 102 and the third detection tube 103. There are three groups of limiting slides 104, and the outside of the three groups of limiting slides 104 are movably connected with the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 from left to right. One end of the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 are all provided with a slide groove 402 matching the limiting slide rod 104, and rolling balls 403 are embedded on both sides of the slide groove 402.

[0033] Please refer to Figure 1 A connecting rod is provided at one end of the inside of the three-way pipe 106, and the bottom of the limiting sliding rod 104 is fixedly connected to the top of the connecting rod.

[0034] Please refer to Figure 1 The tops of the first detection tube 101 , the second detection tube 102 and the third detection tube 103 are all provided with interfaces 107 , and the tops of the interfaces 107 are all threadedly connected with caps 108 .

[0035] Please refer to Figure 1 、 2 and 3, the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 are all movably connected to the first detection tube 101, the second detection tube 102 and the third detection tube 103 respectively through the mutual cooperation of the limiting slide rod 104 and the slide groove 402.

[0036] Please refer to Figure 3 Rolling grooves are provided on both sides of the slide groove 402. The inner diameter of the rolling groove is larger than the inner diameter of the ball 403. The inner diameter of the end face of the rolling groove is smaller than the outer diameter of the ball 403. The ball 403 is embedded in the rolling groove and is rollingly connected to the rolling groove.

[0037] Please refer to Figure 1 One end of the first detection tube 101 , the second detection tube 102 and the third detection tube 103 are uniformly provided with multiple sets of scale lines 105 .

[0038] Please refer to Figure 1 、 2 and 3, the counterweights of the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 increase in sequence from left to right.

[0039] The working principle of the present invention is as follows: when in use, first open the caps 108 on the first detection tube 101 and the second detection tube 102, and then connect the interface 107 on the top of the first detection tube 101 to the port of the natural gas pipeline, so that the gas discharged from the natural gas pipeline is introduced into the interior through the first detection tube 101 to generate air pressure, and generate a driving force on the first piston movable block 2 inside the first detection tube 101, so that it slides along the limit slide rod 104. If sliding occurs and the sliding range reaches a certain value, it indicates that the natural gas pipeline is not leaking. If it does not reach a certain value, it indicates that the natural gas pipeline has leaked, thereby making its detection more convenient and more convenient to carry. A first piston movable block 2, a second piston movable block 3 and a third piston movable block 401 are set, and according to the two sets of interfaces on the first detection tube 101, the second detection tube 102 and the third detection tube 103, the passing airflow directly acts on the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 respectively. According to the influence of the driving force and the movable range of the first piston movable block 2, the second piston movable block 3 and the third piston movable block 401 respectively, the natural gas pressure discharged from the natural gas pipeline can be measured, and the leakage situation at the leakage end and the size of the leakage gap can be inferred by using the change in air pressure, so that the detection effect is better and the utilization rate is improved.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipeline leakage detection device for a natural gas station, characterized in that: include: Detection equipment (1) for detecting leakage in a natural gas pipeline; A first piston movable block (2) is located inside the detection device (1) and is movably connected to the detection device (1); A second piston movable block (3) is located on one side of the first piston movable block (2) and is movably connected to the detection device (1); A movable assembly (4) is located on one side of the second piston movable block (3) and is movably connected to the detection device (1), wherein the movable assembly (4) includes a third piston movable block (401); The detection device (1) comprises a first detection tube (101), a second detection tube (102) and a third detection tube (103); a three-way tube (106) is provided at the bottom of the first detection tube (101), the second detection tube (102) and the third detection tube (103); a limiting slide bar (104) is provided at one end inside the first detection tube (101), the second detection tube (102) and the third detection tube (103); the limiting slide bars (104) are provided in three groups, and the outsides of the three groups of limiting slide bars (104) are movably connected to the first piston movable block (2), the second piston movable block (3) and the third piston movable block (401) in sequence from left to right; one end of the first piston movable block (2), the second piston movable block (3) and the third piston movable block (401) are all provided with a slide groove (402) matching the limiting slide bar (104); and rolling balls (403) are embedded in the two sides of the slide groove (402) for rolling.

2. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: A connecting rod is provided at one end inside the three-way pipe (106), and the bottom of the limiting sliding rod (104) is fixedly connected to the top of the connecting rod.

3. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: The tops of the first detection tube (101), the second detection tube (102) and the third detection tube (103) are all provided with interfaces (107), and the tops of the interfaces (107) are all threadedly connected with caps (108).

4. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: The first piston movable block (2), the second piston movable block (3) and the third piston movable block (401) are all movably connected to the first detection tube (101), the second detection tube (102) and the third detection tube (103) respectively through the mutual cooperation of the limiting sliding rod (104) and the sliding groove (402).

5. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: Rolling grooves are provided on both sides of the interior of the slide groove (402), the inner diameter of the rolling grooves is larger than the inner diameter of the rolling ball (403), the inner diameter of the end face of the rolling grooves is smaller than the outer diameter of the rolling ball (403), and the rolling ball (403) is embedded in the rolling grooves and is rollingly connected to the rolling grooves.

6. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: One end of the first detection tube (101), the second detection tube (102) and the third detection tube (103) are uniformly provided with multiple groups of scale lines (105).

7. The pipeline leakage detection equipment for natural gas stations according to claim 1 is characterized in that: The counterweights of the first piston movable block (2), the second piston movable block (3) and the third piston movable block (401) increase in sequence from left to right.

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