Natural gas pipeline internal air pressure monitoring device

Abstract

The utility model discloses a natural gas pipeline internal air pressure monitoring device, which relates to the technical field of monitoring devices and comprises a device body, a pressure gauge fixedly connected with the top surface of the device body and an air pressure sensor fixedly connected with the inner wall of the device body. And sealing assemblies capable of cutting off and connecting the natural gas pipelines on the two sides are arranged on the opposite faces of the device body correspondingly. The natural gas pipelines at the two ends are installed on the two connecting pipes on the device body, then the pressure of natural gas is monitored through the gas pressure sensor, when pipeline leakage occurs, the control assembly can be automatically started, and then the control assembly drives the sealing assembly to disconnect the two natural gas pipelines; the device is simple in structure and avoids the situation that the structure is complex and occupies the space in the pipeline to affect normal conveying work of natural gas.

Description

Technical Field

[0001] This utility model relates to the field of monitoring device technology, and in particular to a gas pressure monitoring device for the inside of a natural gas pipeline. Background Technology

[0002] The internal pressure monitoring device of urban natural gas supply pipelines is a key facility to ensure the safe and stable transportation of natural gas. It consists of high-precision pressure sensors, which are precisely installed at key nodes of the pipeline and can detect changes in the pressure of natural gas inside the pipeline in real time.

[0003] The applicant found through a search that a Chinese patent discloses "a gas pressure monitoring device for the inside of a natural gas pipeline", with the publication number "CN221570298U". This patent mainly uses an internal threaded block to drive a sealing block to move under the lower limit of the two limiting rods on the same side, so that the sealing block contacts the sealing ring on the same side, and the sealing block seals the inner wall of the pipeline on the same side. This can disconnect the connection of the natural gas pipeline, prevent the continuous transportation of natural gas from the leaking natural gas pipeline, and improve work efficiency.

[0004] The aforementioned device, through a series of structural designs, can quickly disconnect the connection of natural gas pipelines, preventing leaked natural gas pipelines from continuously transporting natural gas. However, the device incorporates a series of transmission components such as bevel gears and lead screws inside the pipeline, which severely hinders the flow of natural gas. The teeth and shafts of the gears occupy the internal space of the pipeline, reducing the cross-sectional area for natural gas flow. This leads to increased flow velocity and decreased pressure, thereby increasing energy consumption during transportation. Consequently, the downstream pressure of the pipeline may fail to meet transportation requirements. Utility Model Content

[0005] The purpose of this utility model is to provide a gas pressure monitoring device inside a natural gas pipeline, so as to solve the problem mentioned in the background art that the installation of transmission components inside the pipeline will occupy the space inside the pipeline and thus affect the normal transportation of natural gas.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas pressure monitoring device for the inside of a natural gas pipeline, comprising a device body, a pressure gauge fixedly connected to the top surface of the device body, and a gas pressure sensor fixedly connected to the inner wall of the device body. A connecting pipe is fixedly connected to the opposite side of the device body, and a sealing component capable of cutting off the connection between the two natural gas pipelines is provided on the opposite side of the device body. A control component capable of causing the sealing component to cut off the connection between the natural gas pipeline is provided on the two sealing components.

[0007] Preferably, the sealing assembly includes a mounting plate, one side of which is fixedly connected to one side of the device body, and the mounting plate communicates with the corresponding connecting pipe and the interior of the device body.

[0008] Preferably, the sealing assembly further includes a groove, which is formed inside the mounting plate, and a sealing plate is slidably connected to the inner wall of the groove.

[0009] Preferably, the sealing assembly further includes two sealing rings, one side of each sealing ring being fixedly connected to the opposite side of the inner wall of the mounting plate, and the inner walls of both sealing rings being tightly fitted to the surface of the corresponding sealing plate.

[0010] Preferably, the control component includes a mounting bracket, with one side of the mounting bracket fixedly connected to the opposite side of two mounting plates, a motor fixedly connected to the bottom surface of the mounting bracket, the output end of the motor penetrating the bottom surface of the mounting bracket and extending into the interior of the mounting bracket, and a controller fixedly connected to the bottom surface of the mounting bracket, the controller being electrically connected to the motor.

[0011] Preferably, the control component further includes two gears, the top surfaces of the two gears are rotatably connected to the bottom surfaces of the two mounting plates respectively, the surfaces of the two gears are meshed with a synchronous toothed belt, and a connecting rod is fixedly connected to the bottom surface of one of the gears, the bottom end of the connecting rod being fixedly connected to the output end of the motor.

[0012] Preferably, the control assembly further includes two lead screws, the bottom ends of which are fixedly connected to the top surface of the corresponding gear, and the top ends of which extend into the interior of the corresponding slide groove and are threadedly connected to the inner wall of the corresponding sealing plate.

[0013] Preferably, two buzzers are fixedly connected to the top surface of the device body, and both buzzers are electrically connected to the pressure gauge.

[0014] The technical effects and advantages of this utility model are as follows: This utility model installs natural gas pipelines at both ends on two connecting pipes on the main body of the device, and then monitors the pressure of natural gas through a gas pressure sensor. When a pipeline leak occurs, the control component can be automatically activated, and then the control component causes the sealing component to disconnect the connection between the two natural gas pipelines. In addition, the device has a simple structure, avoiding the need for a complex structure to occupy the internal space of the pipeline and affect the normal transportation of natural gas. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Device body; 2. Control component; 3. Sealing component; 4. Connecting pipe; 5. Pressure gauge; 6. Buzzer; 7. Pressure sensor; 201. Mounting bracket; 202. Motor; 203. Connecting rod; 204. Gear; 205. Synchronous toothed belt; 206. Lead screw; 207. Controller; 301. Mounting plate; 302. Slide groove; 303. Sealing plate; 304. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] like Figures 1 to 4 As shown, a natural gas pipeline internal pressure monitoring device according to the first aspect of this utility model includes a device body 1, a pressure gauge 5 fixedly connected to the top surface of the device body 1, and a pressure sensor 7 fixedly connected to the inner wall of the device body 1. A connecting pipe 4 is fixedly connected to the opposite side of the device body 1. A sealing component 3 capable of cutting off the connection between the two natural gas pipelines is provided on the opposite side of the device body 1. A control component 2 capable of causing the sealing component 3 to cut off the connection between the natural gas pipelines is provided on the two sealing components 3.

[0023] The technical effects achieved by the above embodiments are as follows: by installing natural gas pipelines at both ends on two connecting pipes 4 on the device body 1, and then monitoring the pressure of natural gas through a gas pressure sensor 7, the control component 2 can be automatically activated when a pipeline leak occurs. Then, the control component 2 causes the sealing component 3 to disconnect the connection between the two natural gas pipelines. Furthermore, the device has a simple structure, avoiding the need for a complex structure to occupy the internal space of the pipeline and affect the normal transportation of natural gas.

[0024] Example 2

[0025] like Figure 3 and Figure 4As shown, a natural gas pipeline internal pressure monitoring device includes all the contents of Embodiment 1. In addition, the sealing component 3 includes a mounting plate 301, one side of which is fixedly connected to one side of the device body 1. The mounting plate 301 communicates with the corresponding connecting pipe 4 and the interior of the device body 1. The sealing component 3 also includes a sliding groove 302, which is formed inside the mounting plate 301. A sealing plate 303 is slidably connected to the inner wall of the sliding groove 302. The sealing component 3 also includes two sealing rings 304, one side of which is fixedly connected to the opposite side of the inner wall of the mounting plate 301. The inner walls of the two sealing rings 304 are tightly fitted to the surface of the corresponding sealing plate 303.

[0026] The technical effect achieved by the above embodiment is as follows: when the pressure sensor 7 detects an abnormal pressure inside the device body 1 and a natural gas leak occurs, the control component 2 controls the sealing plate 303, causing the two sealing plates 303 to move upward along the corresponding slide groove 302 at the same time to seal the two connecting pipes 4, thereby allowing the natural gas pipelines at both ends to be disconnected.

[0027] Example 3

[0028] like Figures 2 to 4 As shown, a natural gas pipeline internal pressure monitoring device includes all the contents of Embodiment 2. Furthermore, the control component 2 includes a mounting bracket 201, with opposite sides of the mounting bracket 201 fixedly connected to the opposite sides of two mounting plates 301. A motor 202 is fixedly connected to the bottom surface of the mounting bracket 201, and the output end of the motor 202 penetrates the bottom surface of the mounting bracket 201 and extends into the interior of the mounting bracket 201. A controller 207 is fixedly connected to the bottom surface of the mounting bracket 201, and the controller 207 is electrically connected to the motor 202. The control component 2 also includes two gears 204. The top surfaces of the two gears 204 are rotatably connected to the bottom surfaces of the two mounting plates 301, and the surfaces of the two gears 204 are meshed with a synchronous toothed belt 205. A connecting rod 203 is fixedly connected to the bottom surface of one of the gears 204, and the bottom end of the connecting rod 203 is fixedly connected to the output end of the motor 202. The control component 2 also includes two lead screws 206, the bottom ends of the two lead screws 206 are fixedly connected to the top surfaces of the corresponding gears 204, and the top ends of the two lead screws 206 extend into the interior of the corresponding slide groove 302 and are threadedly connected to the inner wall of the corresponding sealing plate 303.

[0029] The technical effect achieved by the above embodiment is as follows: when the pressure sensor 7 detects an abnormal pressure, it sends a signal to the motor 202 through the controller 207. Then, the motor 202 starts and drives the two gears 204 to rotate. When the two gears 204 rotate, they can cause the two lead screws 206 to rotate. As the two lead screws 206 rotate, they can cause the two sealing plates 303 to move upward, so that the two sealing plates 303 can seal the two connecting pipes 4, thereby achieving the effect of cutting off the connection of the natural gas pipelines on both sides.

[0030] Example 4

[0031] like Figure 1 and Figure 2 As shown, a gas pressure monitoring device inside a natural gas pipeline includes all the contents of Embodiment 3. In addition, two buzzers 6 are fixedly connected to the top surface of the device body 1, and both buzzers 6 are electrically connected to the pressure gauge 5.

[0032] The technical effect achieved by the above embodiment is that when the value of pressure gauge 5 exceeds the specified value, two buzzers 6 sound an alarm to remind staff that there may be a leak in the natural gas pipeline.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas pressure monitoring device for a natural gas pipeline, comprising a device body (1), a pressure gauge (5) fixedly connected to the top surface of the device body (1), and a gas pressure sensor (7) fixedly connected to the inner wall of the device body (1), characterized in that: The opposite side of the device body (1) is fixedly connected to a connecting pipe (4), and the opposite side of the device body (1) is provided with a sealing component (3) that can cut off the connection between the natural gas pipelines on both sides. The two sealing components (3) are provided with a control component (2) that can cause the sealing component (3) to cut off the connection between the natural gas pipeline.

2. The gas pressure monitoring device inside a natural gas pipeline according to claim 1, characterized in that: The sealing assembly (3) includes a mounting plate (301), one side of which is fixedly connected to one side of the device body (1), and the mounting plate (301) communicates with the corresponding connecting pipe (4) and the interior of the device body (1).

3. The gas pressure monitoring device inside a natural gas pipeline according to claim 2, characterized in that: The sealing assembly (3) also includes a groove (302), which is formed inside the mounting plate (301), and a sealing plate (303) is slidably connected to the inner wall of the groove (302).

4. A natural gas pipeline internal pressure monitoring device according to claim 3, characterized in that: The sealing assembly (3) also includes two sealing rings (304), one side of each sealing ring (304) is fixedly connected to the opposite side of the inner wall of the mounting plate (301), and the inner walls of each sealing ring (304) are tightly fitted to the surface of the corresponding sealing plate (303).

5. A natural gas pipeline internal pressure monitoring device according to claim 1, characterized in that: The control component (2) includes a mounting bracket (201), with one side of the mounting bracket (201) fixedly connected to the opposite side of two mounting plates (301). A motor (202) is fixedly connected to the bottom surface of the mounting bracket (201), and the output end of the motor (202) passes through the bottom surface of the mounting bracket (201) and extends into the interior of the mounting bracket (201). A controller (207) is fixedly connected to the bottom surface of the mounting bracket (201), and the controller (207) is electrically connected to the motor (202).

6. A natural gas pipeline internal pressure monitoring device according to claim 5, characterized in that: The control component (2) also includes two gears (204), the top surfaces of the two gears (204) are rotatably connected to the bottom surfaces of the two mounting plates (301) respectively, and the surfaces of the two gears (204) are meshed with a synchronous toothed belt (205). A connecting rod (203) is fixedly connected to the bottom surface of one of the gears (204), and the bottom end of the connecting rod (203) is fixedly connected to the output end of the motor (202).

7. A natural gas pipeline internal pressure monitoring device according to claim 6, characterized in that: The control component (2) also includes two lead screws (206), the bottom ends of the two lead screws (206) are fixedly connected to the top surface of the corresponding gear (204), and the top ends of the two lead screws (206) extend into the interior of the corresponding slide groove (302) and are threadedly connected to the inner wall of the corresponding sealing plate (303).

8. A natural gas pipeline internal pressure monitoring device according to claim 1, characterized in that: Two buzzers (6) are fixedly connected to the top surface of the device body (1), and both buzzers (6) are electrically connected to the pressure gauge (5).

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