Natural gas pipeline stress monitoring alarm device

Abstract

The utility model discloses a natural gas pipeline stress monitoring alarm device, and belongs to the technical field of natural gas pipeline monitoring. Comprising a digital stress sensor and an intelligent remote controller, a data line is electrically connected between the digital stress sensor and the intelligent remote controller, and the intelligent remote controller is electrically connected with a pipeline electronic valve through a control line. When the stress change value in the natural gas pipe body received by the intelligent remote controller exceeds a preset threshold value, the intelligent remote electric control valve is closed to avoid continuous leakage of natural gas, and when the stress in the natural gas pipe body changes, whether the internal stress of the pipeline is normal or not can be visually observed through the color change of lamplight. Whether leakage or pressure increase occurs or not can be quickly judged, personnel can quickly recognize the problem conveniently, the base and the natural gas pipe body are connected into a whole through the positioner, the phenomenon that the threaded measuring head is loosened due to vibration is avoided, and the digital stress sensor can stably and continuously monitor and process.

Description

Technical Field

[0001] The present application relates to the technical field of natural gas pipeline monitoring, and more specifically, to a natural gas pipeline stress monitoring and alarm device. Background Art

[0002] With the popularization of natural gas, residents are increasingly dependent on the use of natural gas. Natural gas pipelines are necessary equipment for the safe transportation of natural gas. However, when the pipelines are used for a long time, they will be worn and corroded, causing natural gas leakage, insufficient pressure in the pipeline, and the natural gas supply may have a high supply pressure, which can easily cause management fracturing. Therefore, it is necessary to install multiple natural gas monitoring sensor units along the pipeline to monitor and measure the changes in pipeline stress, so as to determine the pipeline usage based on the changes in natural gas stress in the pipeline. The existing public technology number is CN221121912U, which proposes a natural gas pipeline stress monitoring and alarm device. The device can dynamically collect the stress and strain state of the pipeline in real time, realize real-time monitoring of the pipeline stress state, and generate monitoring reports at regular intervals to provide emergency processing data for natural gas pipeline operation and maintenance. When the pipeline stress exceeds the maximum stress value, an alarm is given in time and the upstream and downstream valves are closed, which effectively avoids the explosion hazard caused by gas leakage in the natural gas pipeline and avoids the waste of natural gas resources. In view of the above-mentioned related technologies, the utility model inventor believes that there are still the following defects: the alarm device in the comparative literature only relies on the remote control instrument panel to obtain the pipeline stress change. If the data line is damaged, the operation status of the natural gas pipeline cannot be obtained in time, and the cause of the problem cannot be quickly identified and determined based on the visual situation of the personnel on site. The traditional digital pressure gauge, although there is a pressure digital display, non-professionals cannot quickly identify and determine whether the pressure is normal. Relying solely on the alarm, it can only be limited to pipeline failures, and it is difficult to quickly identify the fault problem. In view of this, we propose a natural gas pipeline stress monitoring alarm device. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The purpose of the present application is to provide a natural gas pipeline stress monitoring and alarm device, which solves the problem that the alarm device in the comparative literature in the above background technology only relies on a remote control instrument panel to obtain pipeline stress changes. If the data line is damaged, the operation status of the natural gas pipeline cannot be obtained in time, and the cause of the problem cannot be quickly identified and determined based on the visual situation of personnel on site. Although the traditional digital pressure gauge has a pressure digital display, non-professionals cannot quickly identify and determine whether the pressure is normal. Relying only on the alarm, it can only be limited to pipeline failures and it is difficult to quickly identify the technical problem of the failure. When the stress change value received by the intelligent remote controller in the natural gas pipe body exceeds the preset threshold, the intelligent remote electric control valve is closed to prevent the natural gas from continuing to leak. When the stress in the natural gas pipe body changes, the light color changes to visually check whether the stress in the pipeline is normal, and whether there is a leakage or pressure increase problem can be quickly determined, which is convenient for personnel to quickly identify the problem. The base is connected to the natural gas pipe body as a whole through a positioner to avoid vibration, which causes the threaded probe to loosen, so that the digital stress sensor can stably and continuously monitor and process the technical effect.

[0005] 2. Technical solution

[0006] The technical solution of the present application provides a natural gas pipeline stress monitoring and alarm device, comprising: a digital stress sensor and an intelligent remote controller, wherein a data line is electrically connected between the digital stress sensor and the intelligent remote controller, wherein the intelligent remote controller is electrically connected to a pipeline electronic valve via a control line, wherein a positioner is threadedly installed on the digital stress sensor, wherein the positioner is connected to a natural gas pipe body, wherein the digital stress sensor is fixedly provided with a base, wherein one end of the base is fixedly provided with a threaded probe, wherein the threaded probe is threadedly installed in the natural gas pipe body, wherein a piston rod is slidably installed in the threaded probe, and wherein the threaded probe is sleeved and installed inside the base. There is a sensitive spring, and a sensitive resistance measuring rod is fixedly provided at the middle section, the two ends of the sensitive spring are fixedly connected to the base and the sensitive resistance measuring rod, a resistance change measuring instrument and a power supply device are detachably installed inside the base, the resistance change measuring instrument is electrically connected to the sensitive resistance measuring rod and the digital instrument panel of the digital stress sensor through a wire, an alarm device is also installed on the base, the alarm device includes a lamp holder, a yellow light, a red light and a green light are arranged on the lamp holder, three electrode sheets are fixedly provided on the power supply device, a metal slide is fixedly provided on the end of the piston rod, and the metal slide is electrically connected to the yellow light, the red light and the green light respectively through the three electrode sheets.

[0007] By adopting the above technical solution, a digital stress sensor is installed on the natural gas pipe body. The pressure in the natural gas pipe body can force the piston rod in the threaded probe to move, causing the sensitive spring to deform, thereby causing the sensitive resistance measuring rod to move along the resistance change measuring instrument, causing the resistance change measuring instrument to measure the change in the length of the sensitive resistance measuring rod actually involved in the measurement circuit. The resistance signal change is then converted into a digital instrument display in digital form using an existing digital conversion device, which is convenient for observing the current stress value of the natural gas pipe body. The digital stress sensor remotely transmits the resistance change signal to the intelligent remote controller via a data line. When the intelligent remote controller receives and calculates the stress change value in the natural gas pipe body and exceeds a preset threshold, it is determined that the natural gas in the natural gas pipe body has an abnormal pressure, such as a natural gas leak. The intelligent remote controller uses a control line and existing control circuit technology to remotely control the valve to close. Closed processing can prevent a large amount of natural gas from leaking from the natural gas pipe. When the internal stress of the natural gas pipe is within the normal setting range, the metal slide is electrically connected to the middle electrode, and the power supply device makes the green light always on. When the natural gas pipe leaks, the pressure decreases. In order to keep the sensitive spring balanced, the piston rod electrically connects the electrode connected to the yellow light of the metal slide, and the yellow light becomes always on. When the metal slide is electrically connected to the electrode connected to the red light, it is determined that the pressure in the pipeline has increased abnormally. The color of the light can be used to visually check whether the internal stress of the natural gas pipe is normal, which can be used to quickly determine whether there is a leakage or pressure increase problem, which is convenient for personnel to quickly identify and determine the cause of the problem. The base can be connected to the natural gas pipe as a whole through the positioner to avoid the vibration of the natural gas pipe, which causes the threaded probe to loosen, so that the digital stress sensor can be stably and continuously monitored.

[0008] Optionally, three slots are provided at the bottom end of the base, and positioners are inserted into the slots for installation, and two bolts are threadedly installed between the base and the positioners.

[0009] By adopting the above technical solution, the positioner is connected to the natural gas pipe body, and then the positioner is plugged into the installation base and installed on the wall using bolts to limit the installation, so that the base and the natural gas pipe body can be connected as a whole.

[0010] Optionally, the positioner includes two plug-in plates, which are plugged and installed in slots. Screw holes are provided on the plug-in plates, and clamping rings are fixed on the plug-in plates. The clamping rings are clamped and installed on the outer surface of the natural gas pipe body.

[0011] By adopting the above technical solution, the plug-in board is inserted into the slot, and the bolt thread is used to penetrate the screw hole and the base. It can be installed on the wall through the bolt thread, and the plug-in board is installed on the outside of the natural gas pipe body through a clamping ring, thereby achieving the purpose of limited installation of the base and the natural gas pipe body.

[0012] Optionally, the lamp holder is fixedly connected with a connecting column, the connecting column is threadedly sleeved with the base, and the yellow light, the red light and the green light are respectively electrically connected to an electrode sheet with a power line.

[0013] By adopting the above technical solution, three lights of different colors, namely yellow, red and green, are set to indicate pipeline leakage, normal pipeline pressure and increased pipeline pressure respectively, making it easy to distinguish pipeline pressure problems.

[0014] Optionally, the metal slide is slidably connected to the power supply device, and the upper surface of the metal slide is in contact with the bottom surface of the electrode sheet.

[0015] By adopting the above technical solution, when the metal slide is electrically connected to different electrode sheets, the yellow light, red light and green light can be individually lit, thereby facilitating visual observation of pressure changes in the pipeline.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: when the stress change value received by the intelligent remote controller in the natural gas pipe body exceeds the preset threshold, the intelligent remote electric control valve is closed to prevent further leakage of natural gas; when the stress in the natural gas pipe body changes, the color of the light changes to visually check whether the stress in the pipeline is normal, and whether there is a leakage or pressure increase problem can be quickly determined, which is convenient for personnel to quickly identify the problem; and the base is connected to the natural gas pipe body as a whole through a positioner to avoid vibration that causes the threaded probe to loosen, so that the digital stress sensor can stably and continuously monitor and process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a natural gas pipeline stress monitoring and alarm device disclosed in a preferred embodiment of the present application;

[0019] Figure 2 This is a structural schematic diagram of a digital stress sensor, a locator and an alarm device for a natural gas pipeline stress monitoring and alarm device disclosed in a preferred embodiment of the present application;

[0020] Figure 3 A schematic diagram of the internal structure of a base of a natural gas pipeline stress monitoring and alarm device disclosed in a preferred embodiment of the present application;

[0021] Figure 4 A natural gas pipeline stress monitoring and alarm device disclosed in a preferred embodiment of the present application Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5A schematic diagram of the connection structure of the alarm light circuit of a natural gas pipeline stress monitoring alarm device disclosed in a preferred embodiment of the present application;

[0023] Explanation of the numbers in the figure: 1. Digital stress sensor; 11. Base; 13. Slot; 14. Bolt; 15. Threaded probe; 16. Piston rod; 17. Sensitive spring; 18. Sensitive resistance measuring rod; 19. Resistance change measuring instrument; 2. Positioner; 21. Plug board; 22. Screw hole; 23. Retaining ring; 3. Natural gas pipe body; 4. Alarm device; 41. Lamp holder; 411. Yellow light; 412. Red light; 413. Green light; 43. Connecting column; 44. Power cord; 45. Electrode sheet; 46. Metal slide; 5. Data cable; 6. Intelligent remote controller; 7. Power supply device. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figures 1 to 5The embodiment of the present application provides a natural gas pipeline stress monitoring and alarm device, comprising: a digital stress sensor 1 and an intelligent remote controller 6, wherein a data line 5 is electrically connected between the digital stress sensor 1 and the intelligent remote controller 6, and the intelligent remote controller 6 is electrically connected to a pipeline electronic valve through a control line, wherein the digital stress sensor 1 is threadedly mounted with a positioner 2, and the positioner 2 is connected to a natural gas pipe body 3, and the digital stress sensor 1 is fixedly provided with a base 11, and a threaded probe 15 is fixedly provided at one end of the base 11, and the threaded probe 15 is threadedly installed in the natural gas pipe body 3, and a piston rod 16 is slidably installed in the threaded probe 15, and the threaded probe 15 is located inside the base 11 and is sleeved with a sensitive spring 17, and a sensitive resistance measuring rod 1 is fixedly provided at the middle section. 8, the two ends of the sensitive spring 17 are fixedly connected to the base 11 and the sensitive resistance measuring rod 18, the base 11 is detachably installed with a resistance change measuring instrument 19 and a power supply device 7, the resistance change measuring instrument 19 is electrically connected to the sensitive resistance measuring rod 18 and the digital instrument panel of the digital stress sensor 1 through a wire, and an alarm device 4 is also installed on the base 11, the alarm device 4 includes a lamp holder 41, and the lamp holder 41 is provided with a yellow light 411, a red light 412 and a green light 413, three electrode sheets 45 are fixedly provided on the power supply device 7, and a metal slide 46 is fixedly provided at the end of the piston rod 16, and the metal slide 46 is electrically connected to the yellow light 411, the red light 412 and the green light 413 through the three electrode sheets 45, and the digital stress sensor 1 is installed on the natural gas pipe body 3. The pressure in the natural gas pipe body 3 can force the piston rod 16 in the threaded probe 15 to move, causing the sensitive spring 17 to deform, thereby causing the sensitive resistance measuring rod 18 to move along the resistance change measuring instrument 19, so that the resistance change measuring instrument 19 measures the change in the length of the sensitive resistance measuring rod 18 actually participating in the measurement circuit, and then uses the existing digital conversion device to convert the resistance signal change in digital form into a digital instrument display, which is convenient for observing the current stress value of the natural gas pipe body 3. The digital stress sensor 1 transmits the resistance change signal remotely to the intelligent remote controller 6 through the data line 5. When the intelligent remote controller 6 receives and calculates the stress change value in the natural gas pipe body 3 and exceeds the preset threshold, it is determined that the natural gas in the natural gas pipe body 3 has an abnormal pressure, such as a natural gas leak. In case of leakage, the intelligent remote controller 6 uses the control line and the existing control circuit technology to remotely control the valve closing process to prevent the natural gas pipe body 3 from leaking a large amount of natural gas. When the internal stress of the natural gas pipe body 3 is within the normal setting range, the metal slide 46 is electrically connected to the middle electrode sheet 45, and the power supply device 7 makes the green light 413 always on. When the natural gas pipe body 3 leaks, due to the pressure reduction, in order to keep the sensitive spring 17 balanced, the piston rod 16 makes the metal slide 46 and the electrode sheet 45 connected to the yellow light 411 electrically connected, and the yellow light 411 becomes always on. When the metal slide 46 is electrically connected to the electrode sheet 45 connected to the red light 412, it is determined that the pressure in the pipeline is abnormally increased. The color of the light can be used to visually check whether the internal stress of the natural gas pipe body 3 is normal.It can be used to quickly determine whether there is a leakage or pressure increase problem, which is convenient for personnel to quickly identify and determine the cause of the problem. The base 11 can be connected to the natural gas pipe body 3 as a whole through the positioner 2 to avoid the vibration of the natural gas pipe body 3, which may cause the threaded probe 15 to loosen, so that the digital stress sensor 1 can stably and continuously monitor and process.

[0026] Reference Figure 1 and Figure 2 Three slots 13 are provided at the bottom of the base 11, and the positioner 2 is inserted into the slot 13, and two bolts 14 are threadedly installed between the base 11 and the positioner 2. The positioner 2 is connected to the natural gas pipe body 3, and then the positioner 2 is inserted into the installation base 11 and is limitedly installed on the wall using the bolts 14, so that the base 11 and the natural gas pipe body 3 can be connected as a whole.

[0027] Reference Figure 1 and Figure 2 The positioner 2 includes two plug-in boards 21, which are plugged and installed in the slots 13. The plug-in boards 21 are provided with screw holes 22. The plug-in boards 21 are fixed with clamping rings 23. The clamping rings 23 are clamped and installed on the outer surface of the natural gas pipe body 3. The plug-in boards 21 are plugged into the slots 13, and the bolts 14 are threadedly penetrated through the screw holes 22 and the base 11. The bolts 14 can be threadedly installed on the wall, and the plug-in boards 21 are clamped and installed on the outside of the natural gas pipe body 3 by the clamping rings 23, thereby achieving the purpose of limiting the installation of the base 11 and the natural gas pipe body 3.

[0028] Reference Figures 3 to 5 The lamp holder 41 is fixedly connected with a connecting column 43, and the connecting column 43 is threadedly sleeved with the base 11. The yellow light 411, the red light 412 and the green light 413 are respectively electrically connected with an electrode sheet 45 and a power line 44. By setting three lights of different colors, the yellow light 411, the red light 412 and the green light 413, it can be used to respectively indicate pipeline leakage, normal pipeline pressure and increased pipeline pressure, so as to facilitate the distinction of pipeline pressure problems.

[0029] Reference Figures 3 to 5 The metal slide 46 is slidably connected to the power supply device 7, and the upper surface of the metal slide 46 is in contact with the bottom surface of the electrode sheet 45. When the metal slide 46 is electrically connected to different electrode sheets 45, the yellow light 411, the red light 412 and the green light 413 can be kept on separately, thereby facilitating visual observation of pressure changes in the pipeline.

[0030] Working principle: by installing a digital stress sensor 1 on the natural gas pipe body 3, the pressure inside the natural gas pipe body 3 can force the piston rod 16 in the threaded probe 15 to move, causing the sensitive spring 17 to deform, thereby causing the sensitive resistance measuring rod 18 to move along the resistance change measuring instrument 19, so that the resistance change measuring instrument 19 measures the change in the length of the sensitive resistance measuring rod 18 actually participating in the measurement circuit, and then uses the existing digital conversion device to convert the resistance signal change in digital form into a digital instrument display, which is convenient for observing the current stress value of the natural gas pipe body 3. The digital stress sensor 1 remotely transmits the resistance change signal to the intelligent remote controller 6 through the data line 5. When the intelligent remote controller 6 receives and calculates that the stress change value in the natural gas pipe body 3 exceeds the preset threshold, it is determined that the natural gas in the natural gas pipe body 3 has an abnormal pressure, such as a natural gas leak. The intelligent remote controller 6 uses the control line and the existing control circuit technology to remotely control the valve closure to avoid the natural gas pipe body. 3 leaks a large amount of natural gas. When the stress in the natural gas pipe body 3 is within the normal setting range, the metal slide 46 is electrically connected to the middle electrode sheet 45, and the power supply device 7 makes the green light 413 always on. When the natural gas pipe body 3 leaks, due to the pressure reduction, in order to keep the sensitive spring 17 balanced, the piston rod 16 makes the metal slide 46 electrically connected to the electrode sheet 45 connected to the yellow light 411, and then the yellow light 411 becomes always on. When the metal slide 46 is electrically connected to the electrode sheet 45 connected to the red light 412, it is determined that the pressure in the pipeline is abnormally increased. The color of the light can be used to visually see whether the stress in the natural gas pipe body 3 is normal, which can be used to quickly determine whether there is a leakage or pressure increase problem, which is convenient for personnel to quickly identify and determine the cause of the problem. The base 11 can be connected to the natural gas pipe body 3 as a whole through the positioner 2 to avoid the vibration of the natural gas pipe body 3, which causes the threaded probe 15 to loosen, so that the digital stress sensor 1 can stably and continuously monitor and process.

Claims

1. A natural gas pipeline stress monitoring and alarm device, characterized in that: The invention comprises: a digital stress sensor (1) and an intelligent remote controller (6); a data line (5) is electrically connected between the digital stress sensor (1) and the intelligent remote controller (6); the intelligent remote controller (6) is electrically connected to a pipeline electronic valve via a control line; the digital stress sensor (1) is threadedly mounted with a positioner (2); the positioner (2) is connected to a natural gas pipe body (3); the digital stress sensor (1) is fixedly provided with a base (11); a threaded probe (15) is fixedly provided at one end of the base (11); the threaded probe (15) is threadedly mounted in the natural gas pipe body (3); a piston rod (16) is slidably mounted in the threaded probe (15); a sensitive spring (17) is sleeved on the threaded probe (15) inside the base (11); and a sensitive resistance measuring rod (18) is fixedly provided at the middle section; The two ends of the sensitive spring (17) are fixedly connected to the base (11) and the sensitive resistance measuring rod (18); a resistance change measuring instrument (19) and a power supply device (7) are detachably installed inside the base (11); the resistance change measuring instrument (19) is electrically connected to the sensitive resistance measuring rod (18) and the digital instrument panel of the digital stress sensor (1) through a wire; an alarm device (4) is also installed on the base (11); the alarm device (4) comprises a lamp holder (41); a yellow light (411) and a red light (412) are arranged on the lamp holder (41); three electrode sheets (45) are fixedly arranged on the power supply device (7); a metal slide sheet (46) is fixedly arranged on the end of the piston rod (16); the metal slide sheet (46) is electrically connected to the yellow light (411), the red light (412) and the green light (413) respectively through the three electrode sheets (45).

2. A natural gas pipeline stress monitoring and alarm device according to claim 1, characterized in that: The bottom end of the base (11) is provided with three slots (13), the positioners (2) are inserted into the slots (13), and two bolts (14) are threadedly installed between the base (11) and the positioners (2).

3. A natural gas pipeline stress monitoring and alarm device according to claim 2, characterized in that: The positioner (2) comprises two plug-in plates (21), the plug-in plates (21) are plugged into the slots (13), the plug-in plates (21) are provided with screw holes (22), the plug-in plates (21) are fixed with clamping rings (23), and the clamping rings (23) are clamped and installed on the outer surface of the natural gas pipe body (3).

4. A natural gas pipeline stress monitoring and alarm device according to claim 1, characterized in that: The lamp holder (41) is fixedly connected with a connecting column (43), and the connecting column (43) is threadedly sleeved with the base (11). The yellow lamp (411), the red lamp (412), and the green lamp (413) are respectively electrically connected to an electrode sheet (45) with a power line (44).

5. A natural gas pipeline stress monitoring and alarm device according to claim 1, characterized in that: The metal sliding sheet (46) is slidably connected to the power supply device (7), and the upper surface of the metal sliding sheet (46) is in contact with the bottom surface of the connecting electrode sheet (45).

Images