Intelligent protection device for welding part of PE (Poly Ethylene) gas pipe

Abstract

The intelligent protection device comprises an upper clamping plate and a lower clamping plate, the cross section of the upper clamping plate and the cross section of the lower clamping plate are both semicircular, the upper clamping plate and the lower clamping plate are fixedly connected to form a cylindrical structure, upper wing plates are arranged at the left end and the right end of the upper clamping plate correspondingly, and a gas sensor is arranged on the peripheral wall of the upper clamping plate; a controller shell is arranged in the middle of the peripheral wall of the upper clamping plate, a control module electrically connected with the gas sensor is arranged in the controller shell, the control module is used for uploading data collected by the gas sensor to a remote server, and lower wing plates are arranged at the left end and the right end of the lower clamping plate correspondingly; after the upper clamping plate and the lower clamping plate are fixedly connected, the upper wing plate and the lower wing plate form a cylindrical structure, and a lifting bracket is detachably connected to the middle of the peripheral wall of the lower clamping plate. According to the intelligent gas leakage monitoring device, concentrated stress of a welding part can be dispersed, structural damage caused by geological settlement and improper construction can be prevented, and the gas leakage condition of a welding area can be intelligently monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline maintenance, and more specifically, to an intelligent protection device for a welding portion of a PE gas pipe. Background Art

[0002] Polyethylene (PE) gas pipelines have been widely used in many fields such as oil, water, and gas transportation due to their excellent corrosion resistance and long service life. Taking gas transmission and distribution as an example, PE gas pipelines play an important role in urban gas transmission and distribution systems. However, in actual use, the connection points of PE gas pipelines often become weak links for leakage. This situation not only poses a serious threat to the safe operation of the gas pipeline network, but may also cause significant economic losses and environmental damage.

[0003] When connecting PE gas pipelines, capacitor welding technology is usually used to weld the sleeves to the two PE gas pipelines to be connected. Studies have shown that buried electric fusion pipe fittings may sink significantly under the action of soil pressure; at the same time, buried electric fusion pipe fittings may also be disturbed by the construction of other nearby engineering facilities, such as water wells, water pipes, other gas pipelines, etc. When these construction activities are close to the electric fusion pipe fittings, they may contact and exert pressure on the gas pipe fittings due to the influence of geological subsidence, which may cause damage to the electric fusion welding interface and cause the pipe fittings to leak and fail. In addition, in the process of emergency repair of electric fusion welding sleeves, due to the difficulty of construction and the limitations of workers' construction specifications, the problem of insufficient land backfilling is prone to occur after emergency repair. Insufficient land backfilling refers to the difficulty of compacting the backfill soil under the pipeline, or the use of inappropriate materials, which may lead to insufficient soil support around the electric fusion welding site. This may cause stress concentration at the electric fusion welding site after the soil landfill is completed, resulting in leakage. In addition, how to monitor gas leakage at the location of the electric fusion connection sleeve in real time is also a key issue that urgently needs to be solved. Summary of the invention

[0004] In order to solve the technical problem that the welding parts of existing PE gas pipelines are easily damaged by concentrated stress, the present invention innovatively provides an intelligent protection device for the welding parts of PE gas pipes, which can disperse the concentrated stress at the welding parts, help prevent structural damage caused by geological subsidence and improper construction, and can intelligently monitor gas leakage in the welding area.

[0005] To achieve the above technical objectives, an embodiment of the present invention discloses an intelligent protection device for a PE gas pipe welding portion, which is applied to a PE gas pipe and comprises an upper splint and a lower splint, wherein the cross-sectional shapes of the upper splint and the lower splint are both semicircular, and the upper splint and the lower splint are fixedly connected to form a cylindrical structure, upper wing plates are respectively arranged at the left and right ends of the upper splint, a gas sensor is arranged on the outer peripheral wall of the upper splint, a controller housing is arranged in the middle of the outer peripheral wall of the upper splint, oblong mounting holes are respectively arranged on the outer peripheral walls of the upper splint on the left and right sides of the control housing, a control module electrically connected to the gas sensor is arranged in the controller housing, and the control module is used to upload data collected by the gas sensor to a remote server, lower wing plates are respectively arranged at the left and right ends of the lower splint, and after the upper splint and the lower splint are fixedly connected, the upper wing plates and the lower wing plates form a cylindrical structure, the materials of the upper wing plates and the lower wing plates are the same as the materials of the PE gas pipe, and the hardness of the upper wing plates and the lower wing plates are slightly greater than that of the PE gas pipe, and a lifting bracket is detachably connected to the middle of the outer peripheral wall of the lower splint.

[0006] Furthermore, the present invention provides an intelligent protection device for the welding part of a PE gas pipe, wherein the inner diameter of the upper wing plate is smaller than the inner diameter of the upper clamping plate, the upper wing plate is provided with an upper extension portion extending toward the inner side of the inner circumferential wall of the upper clamping plate, the upper extension portion forms an upper limit surface at the end portion within the inner circumferential wall of the upper wing plate, the inner diameter of the lower wing plate is smaller than the inner diameter of the lower clamping plate, the lower wing plate is provided with a lower extension portion extending toward the inner side of the inner circumferential wall of the lower clamping plate, the lower extension portion forms a lower limit surface at the end portion of the inner circumferential wall of the lower wing plate.

[0007] Furthermore, the present invention provides an intelligent protection device for a PE gas pipe welding portion, wherein two mounting holes are provided on the outer side wall of the upper clamping plate, and the two mounting holes are respectively located on the left and right sides of the controller housing, and an air vent is provided on the upper limit surface, and the air vent is connected to the bottom of the mounting hole, and two gas sensors are provided, and the two gas sensors are respectively installed in the two mounting holes, and connecting holes are respectively provided on the left and right side walls of the controller housing, and the gas sensor is electrically connected to the controller module by passing a wire through the connecting hole of the controller housing.

[0008] Furthermore, the present invention provides an intelligent protection device for a PE gas pipe welding portion, wherein the oblong mounting holes are arranged along the circumference of the upper clamping plate.

[0009] Furthermore, the present invention provides an intelligent protection device for the welding part of a PE gas pipe, wherein upper support plates are respectively provided at the front and rear ends of the lower side of the upper clamping plate, and lower support plates matching the upper support plates are respectively provided at the front and rear ends of the upper side of the lower clamping plate, and the upper support plate and the lower support plate are fixedly connected by bolts.

[0010] Furthermore, the present invention provides an intelligent protection device for the welding part of a PE gas pipe, wherein the lifting bracket includes a support plate and two telescopic rods symmetrically arranged on the support plate, the upper ends of the two telescopic rods are fixedly connected to the outer peripheral wall of the lower clamping plate, and the lower ends of the two telescopic rods are fixedly connected to the support plate.

[0011] Furthermore, the present invention provides an intelligent protection device for the welding part of a PE gas pipe, wherein the telescopic rod comprises a fixing nut, a ferrule, a clamping rod, an inner support rod and an outer sleeve, the upper end of the fixing nut is welded to the outer peripheral wall of the lower clamping plate, the upper half of the inner peripheral wall of the ferrule is provided with a clamping ring, the lower half of the clamping rod is provided with a clamping platform, the ferrule is sleeved on the clamping rod, the clamping platform and the clamping ring are abutted, the length of the clamping rod is greater than the length of the ferrule, the clamping rod passes through the ferrule from bottom to top and is threadedly matched with the fixing nut, the upper half of the inner support rod is threadedly matched with the lower half of the ferrule, and the inner The lower end of the outer circumferential wall of the support rod is provided with two protrusions arranged symmetrically with respect to the center, and the inner circumferential wall of the outer sleeve is respectively provided with guide grooves matching the two protrusions, and the guide grooves are arranged in the vertical direction. The inner circumferential wall of the outer sleeve is provided with a plurality of arc-shaped limit grooves arranged at intervals, and the arc-shaped limit grooves are semi-closed grooves with one end open and the other end closed. The open end of the arc-shaped limit groove is located on the groove wall of one guide groove, and the closed end of the arc-shaped limit groove extends along the circumference of the outer sleeve toward the other guide groove, and the inner support rod is screwed and fixed to the outer sleeve through the protrusions and the arc-shaped limit grooves.

[0012] Furthermore, the present invention provides an intelligent protection device for a PE gas pipe welding portion, wherein an end cover is sleeved on the inner support rod, a lower surface of the end cover is provided with a clamping protrusion matching the guide groove of the outer sleeve, and the end cover is fixed to the outer sleeve by the clamping protrusion.

[0013] Furthermore, the present invention provides an intelligent protection device for the welding part of a PE gas pipe, wherein the device also includes a rubber protective sleeve, and the rubber protective sleeve is provided in two pieces, and the two rubber protective sleeves are respectively arranged in a cylindrical structure formed by an upper wing plate and a lower wing plate after the upper clamping plate and the lower clamping plate are fixedly connected.

[0014] Furthermore, the present invention provides an intelligent protection device for a PE gas pipe welding portion, wherein the control module includes a power supply module, a voltage stabilizing module, a wireless communication module, a positioning module, a vibration sensor and a microcontroller, and the wireless communication module, the positioning module and the gas sensor are all electrically connected to the microcontroller, and the power supply module supplies power to the wireless communication module, the positioning module, the microcontroller, the vibration sensor and the gas sensor through the voltage stabilizing module.

[0015] The beneficial effects of the present invention are as follows: the present invention sets an upper clamping plate and a lower clamping plate, sets the cross-sectional shapes of the upper clamping plate and the lower clamping plate to be semicircular, so that the upper clamping plate is fixedly connected to the lower clamping plate to form a cylindrical structure, upper wing plates are respectively provided at the left and right ends of the upper clamping plate, a gas sensor is provided on the outer peripheral wall of the upper clamping plate, and a controller shell is provided in the middle of the outer peripheral wall of the upper clamping plate, and oblong mounting holes are respectively provided on the outer peripheral walls of the upper clamping plates on the left and right sides of the control shell, and a control module electrically connected to the gas sensor is provided in the controller shell, so that the control module is used to upload data collected by the gas sensor to a remote server, and the lower clamping plate is provided with a plurality of upper wing plates. The left and right ends of the device are provided with lower wing plates respectively, so that the upper wing plate and the lower wing plate form a cylindrical structure after the upper splint and the lower splint are fixedly connected, so that the material of the upper wing plate and the lower wing plate are the same as that of the PE gas pipe, and the hardness of the upper wing plate and the lower wing plate is slightly greater than that of the PE gas pipe, and a lifting bracket is detachably connected to the middle of the outer peripheral wall of the lower splint, thereby forming an intelligent protection device for the welding part of the PE gas pipe with a simple structure, easy installation and maintenance, capable of dispersing the concentrated stress of the welding part, preventing structural damage caused by factors such as geological settlement and improper construction, and capable of intelligently monitoring the gas leakage in the welding area. In practical applications, it is only necessary to fix the upper and lower splints on the sleeve of the PE gas pipe welding part, and the upper and lower wing plates clamp the PE gas pipes on both sides of the sleeve. In this way, the sleeve and the PE gas pipes on both sides are wrapped in the protective device as a whole, and even if the PE gas pipes on both sides of the sleeve are twisted, it will not affect the welding part of the sleeve and the PE gas pipe. Through the lifting bracket, the appropriate height can be selected to adapt to different installation environments. At the same time, the lifting bracket can also increase the contact area with the ground or landfill pit, effectively slowing down the settlement of the PE gas pipe welding part. In addition, through the control module and gas sensor, the gas leakage of the welding part can be monitored in real time. And the protection device can resist the influence of internal and external pressure and environmental factors of the pipeline, ensuring long-term and stable protection effect. It is easy to install and maintain quickly at the construction site, which helps to shorten the construction period and reduce costs. In addition, the device can effectively prevent external forces from damaging the electric fusion welding part, thereby preventing leakage problems caused by mechanical damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an intelligent protection device for a PE gas pipe welding portion of the present invention;

[0017] Figure 2 It is a front view structural schematic diagram of an intelligent protection device for a PE gas pipe welding portion of the present invention;

[0018] Figure 3 It is a top view structural schematic diagram of an intelligent protection device for a PE gas pipe welding portion of the present invention;

[0019] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure in the direction of line AA;

[0020] Figure 5 for Figure 4 A partial enlarged structural diagram of the middle A part;

[0021] Figure 6 This is a schematic diagram of the explosion structure of an intelligent protection device for a PE gas pipe welding portion of the present invention;

[0022] Figure 7 The present invention is a schematic diagram of a partial cross-sectional structure of an outer sleeve in an intelligent protection device for a PE gas pipe welding portion. DETAILED DESCRIPTION

[0023] The intelligent protection device for the welding part of a PE gas pipe of the present invention is explained and illustrated in detail below in conjunction with the drawings of the specification.

[0024] like Figure 1-3 As shown, an embodiment of the present invention discloses an intelligent protection device for the welding part of a PE gas pipe, which is applied to a PE gas pipe. The intelligent protection device is equipped with an upper splint 1 and a lower splint 2. The cross-sections of the upper splint 1 and the lower splint 2 are both set to be semicircular, ensuring that the upper splint 1 and the lower splint 2 are fixedly connected to form a cylindrical structure. Upper wing plates 11 are respectively installed on the left and right ends of the upper splint 1; at the same time, a gas sensor 3 is provided on its outer peripheral wall, and a controller housing 4 is provided in the middle. Long circular mounting holes 15 are respectively provided on the outer peripheral walls of the upper splint 1 on the left and right sides of the control housing 4. A control module electrically connected to the gas sensor 3 is embedded in the controller housing 4, which is responsible for uploading the data collected by the gas sensor 3 to a remote server. Lower wing plates 21 are also provided on the left and right ends of the lower splint 2, so that the upper and lower wing plates 21 form a cylindrical structure together after the upper and lower splints 2 are fixedly connected. The material of the upper wing plate and the lower wing plate is the same as that of the PE gas pipe, and the hardness of the upper wing plate and the lower wing plate is slightly greater than that of the PE gas pipe. The upper wing plate 11 and the lower wing plate 21 are fixed with bolts to correspond to the upper clamping plate 1 and the lower clamping plate. Taking the PE gas pipe with a specification of PE80 as an example, the specifications of the upper wing plate 11 and the lower wing plate 21 can be selected between PE80-PE100. A detachable lifting bracket 5 is provided in the middle of the outer peripheral wall of the lower clamping plate 2. The above setting constitutes an intelligent protection device for the welding part of a PE gas pipe with a simple structure, easy installation and maintenance. The device can disperse the concentrated stress of the welding part, prevent structural damage caused by factors such as geological settlement and improper construction, and can intelligently monitor gas leakage in the welding area.

[0025] In actual application, the sleeve is placed between two sections of PE gas pipes, the upper clamp 1 and the lower clamp 2 are fixed on the sleeve, and the welding socket of the sleeve is exposed through the oblong mounting hole 15 of the upper clamp 1, so that the upper wing plate 11 and the lower wing plate 21 can clamp the PE gas pipes on both sides of the sleeve, and a circle of sealant is applied at the connection between the upper clamp 1 and the upper wing plate 11 and the connection between the lower clamp 2 and the lower wing plate 21. In this way, the sleeve and the PE gas pipes on both sides are wrapped as a whole in the protective device, and the external stress at the welding part of the PE gas pipe can be dispersed and eliminated through the upper wing plate 11 and the lower wing plate 21. Because the hardness of the upper wing plate 11 and the lower wing plate 21 is slightly greater than that of the PE gas pipe, when the upper clamping plate 1 and the lower clamping plate 2 are fixed on the welding part of the PE gas pipe, the upper wing plate 11 and the lower wing plate 21 can disperse and eliminate the external stress at the welding part of the PE gas pipe, and the external stress can be transferred to the PE gas pipes on both sides of the sleeve under the premise of supporting and fixing the PE gas pipe (that is, if there are no upper wing plates 11 and the lower wing plates 21, the external stress will directly act on the welds connecting the sleeve and the PE gas pipes on both sides. When the upper wing plates 11 and the lower wing plates 21 are provided, the external stress acts on the PE gas pipes on both sides of the upper wing plates 11 and the lower wing plates 21). Even if the PE gas pipes on both sides of the sleeve are bent or twisted, it will not affect the welding part of the sleeve and the PE gas pipe. Of course, in order to prevent the ends of the upper wing plate 11 and the lower wing plate 21 from scratching the PE gas pipe, a smoothly transitioned curved surface is provided at the ends of the upper wing plate 11 and the lower wing plate 21, respectively, to reduce the damage of the upper wing plate 11 and the lower wing plate 21 to the PE gas pipe. Through the lifting bracket 5, it can be adjusted to an appropriate height to adapt to different installation environments. At the same time, the lifting bracket 5 can also increase the contact area with the ground or the landfill pit, effectively slowing down the settlement of the welding part of the PE gas pipe. In addition, the coordinated use of the control module and the gas sensor 3 can monitor the gas leakage of the welding part in real time. The protective device can resist the influence of the internal and external pressure of the pipeline and the environmental factors, and ensure a long-term and stable protection effect. It is easy to install and maintain quickly at the construction site, which helps to shorten the construction period and reduce costs. In addition, the device can effectively prevent external forces from damaging the electric fusion welding part, thereby preventing leakage problems caused by mechanical damage.

[0026] like Figure 3 Combined with Figure 6As shown, in one embodiment of the present invention, two mounting holes 13 are provided on the outer wall of the upper clamping plate 1, so that the two mounting holes 13 are respectively located on the left and right sides of the controller housing 4, and an air vent 14 is provided on the upper limit surface, so that the air vent 14 is connected to the bottom of the mounting hole 13, and two gas sensors 3 are provided, and the two gas sensors 3 are respectively installed in the two mounting holes 13, and connecting holes 41 are respectively provided on the left and right side walls of the controller housing 4, so that the gas sensor 3 is electrically connected to the controller module through the connecting hole 41 of the controller housing 4 through the wire. Once the protective device is installed, the two air vents 14 will be precisely aligned with the weld area on both sides of the PE gas pipe and the sleeve. When a gas leak occurs, the gas sensor 3 can more accurately determine whether the leak point is on the left or right side of the sleeve from the inside of the protective device.

[0027] like Figure 4 Combined with Figure 6As shown, in one embodiment of the present invention, the inner diameter of the upper wing plate 11 is smaller than the inner diameter of the upper clamping plate 1, and an upper extension portion 12 extending to the inner side of the inner peripheral wall of the upper clamping plate 1 is provided on the upper wing plate 11, so that the upper extension portion 12 forms an upper limit surface at the end of the inner peripheral wall of the upper wing plate 11, and the inner diameter of the lower wing plate 21 is smaller than the inner diameter of the lower clamping plate 2, and a lower extension portion 22 extending to the inner side of the inner peripheral wall of the lower clamping plate 2 is provided on the lower wing plate 21, so that the lower extension portion 22 forms a lower limit surface at the end of the inner peripheral wall of the lower wing plate 21. The oblong mounting holes 15 are arranged along the circumference of the upper clamping plate 1, so that the oblong mounting holes 15 are located between the mounting holes 13 and the controller housing 4. The upper limit surface and the lower limit surface can be used to limit the fixed position of the sleeve at the welding part of the PE gas pipe after the upper clamping plate 1 and the lower clamping plate 2 are fixed. Through the oblong mounting hole 15, it can be observed that the outer peripheral wall of the sleeve can perfectly fit with the inner wall of the upper clamping plate 1 and the lower clamping plate 2, so that the upper wing plate 11 and the lower wing plate 21 can clamp the PE gas pipe on both sides of the sleeve to enhance the protection effect. When performing electric fusion welding on PE gas pipes, it is necessary to place the sleeve between two sections of PE gas pipes, and a welding socket is provided at each end of the outer wall of the sleeve (i.e., two welding sockets are provided on the sleeve, and there is a certain distance between the two welding sockets). Due to different manufacturers, the distance between the two welding sockets may be different. A heating wire is wound inside the sleeve, and the two ends of the heating wire are respectively connected to the welding sockets one by one. When performing electric fusion welding, the welding sockets are connected to the plug of the welding machine one by one. The contact part of the sleeve and the PE gas pipes on both sides is melted by heating. After cooling, the sleeve and the PE gas pipes on both sides are integrated to complete the welding. Since the oblong mounting hole 15 has a certain width, it can adapt to sleeves produced by different manufacturers (i.e., sleeves with different distances between the welding sockets). It also includes a rubber protective sleeve 6, which is provided in two pieces. The two rubber protective sleeves 6 are respectively provided in the cylindrical structure formed by the upper wing plate 11 and the lower wing plate 21 after the upper clamping plate 1 and the lower clamping plate 2 are fixedly connected. The rubber protective sleeve 6 is made of PE70 material, and its plastic deformation is slightly greater than that of the pipe, which plays a fixing role and achieves the purpose of dispersing and eliminating the stress at the connection between the PE gas pipe and the sleeve. In addition, the front and rear ends of the lower side of the upper clamping plate 1 are respectively provided with an upper support plate 16, and the front and rear ends of the upper side of the lower clamping plate 2 are respectively provided with a lower support plate 22 matching the upper support plate 16. The upper support plate 16 and the lower support plate 22 are fixedly connected by bolts. When the upper clamping plate 1 and the lower clamping plate 2 are fixed, the upper support plate 16 and the lower support plate 22 fit tightly together, and the upper support plate 16 and the lower support plate 22 can increase the contact area with the backfill soil. By cooperating with the lifting bracket 5, a secondary anti-settling structure is formed to further slow down the settlement speed of the PE gas pipe.

[0028] like Figure 5 Combined with Figure 6 and Figure 7As shown, in one embodiment of the present invention, the lifting bracket 5 includes a support plate 51 and two telescopic rods 52 symmetrically arranged on the support plate 51, the upper ends of the two telescopic rods 52 are fixedly connected to the outer peripheral wall of the lower clamping plate 2, and the lower ends of the two telescopic rods 52 are fixedly connected to the support plate 51. By arranging the two telescopic rods 52, the force on the support plate 51 can be balanced, making the structure more stable.

[0029] More specifically, the telescopic rod 52 includes a fixing nut 521, a clamping sleeve 523, a clamping rod 522, an inner support rod 524 and an outer sleeve 525. The upper end of the fixing nut 521 is welded to the outer peripheral wall of the lower clamping plate 2, a clamping ring 5231 is provided on the upper half of the inner peripheral wall of the clamping sleeve 523, and a clamping platform 5221 is provided on the lower half of the clamping rod 522. The clamping sleeve 523 is sleeved on the clamping rod 522, so that the clamping platform 5221 and the clamping ring 5231 are abutted, the length of the clamping rod 522 is greater than the length of the clamping sleeve 523, and the clamping rod 522 passes through the clamping sleeve 523 from bottom to top and is threadedly matched with the fixing nut 521. The upper half of the inner support rod 524 is threadedly matched with the lower half of the ferrule 523, and the lower end of the outer circumferential wall of the inner support rod 524 is provided with two protrusions 5241 arranged symmetrically with the center, and the inner circumferential wall of the outer sleeve 525 is respectively provided with guide grooves 5251 matching the two protrusions 5241, and the guide grooves 5251 are arranged in the vertical direction. The inner circumferential wall of the outer sleeve 525 is provided with a plurality of arc-shaped limiting grooves 5252 arranged at intervals, and the arc-shaped limiting grooves 5252 are semi-closed grooves with one end open and the other end closed. The open end of the arc-shaped limiting groove 5252 is located at the groove wall of one guide groove 5251, and the closed end of the arc-shaped limiting groove 5252 extends toward the other guide groove 5251 along the circumference of the outer sleeve 525. The inner support rod 524 is screwed and fixed to the outer sleeve 525 through the protrusions 5241 and the arc-shaped limiting grooves 5252, and the lower end of the outer sleeve 525 is welded to the support plate 51. An end cover 526 is sleeved on the inner support rod 524 . A lower surface of the end cover 526 is provided with a locking protrusion 5261 matching the guide groove 5251 of the outer sleeve 525 . The end cover 526 is fixed to the outer sleeve 525 via the locking protrusion 5261 .

[0030] In actual use, first, sleeve 523 is sleeved on the clamping rod 522, so that the clamping platform 5221 on the clamping rod 522 is in contact with the clamping ring 5231 on the sleeve 523, and the clamping rod 522 is fixed on the fixing nut 521. At this time, the clamping rod 522 is fixed, but the sleeve 523 can still rotate on the clamping rod 522; then, the end cover 526 is sleeved on the inner support rod 524. For the convenience of adjustment, the end cover 526 can be sleeved on the inner support rod 524 and then a hexagonal nut can be welded on the upper half of the inner support rod 524. The inner support rod 524 is inserted into the outer sleeve 525 along the guide groove 5251 of the outer sleeve 525 through the protrusion 5241 set at the lower end. When it is inserted into the appropriate position, the inner support rod 524 is fixed by rotating the hexagonal nut on the inner support rod 524. The two protrusions 5241 on the rod 524 will be stuck in the corresponding arc-shaped limit grooves 5252 set on the inner wall of the outer sleeve 525, and the height positioning of the inner support rod 524 can be completed at this time. After the protrusion 5241 is stuck in the arc-shaped limit grooves 5252, the arc-shaped limit grooves 5252 of the outer sleeve 525 will also support the inner support rod 524, and the arc-shaped limit grooves 5252 have a certain length, so it can prevent the protrusion 5241 from slipping out of the arc-shaped limit grooves 5252, thereby ensuring the firmness of the connection between the inner support rod 524 and the outer sleeve 525; finally, screw the clamping sleeve 523 onto the upper end of the inner support rod 524, and at this time, the clamping ring 5231 of the clamping sleeve 523 will be pressed together with the clamping platform 5221 of the clamping rod 522, thereby completing the height adjustment.

[0031] In one embodiment of the present invention, the control module includes a power module, a voltage stabilizing module, a wireless communication module, a positioning module, a vibration sensor and a microcontroller. The wireless communication module, the positioning module and the gas sensor 3 are all electrically connected to the microcontroller. The power module supplies power to the wireless communication module, the positioning module, the microcontroller, the vibration sensor and the gas sensor 3 through the voltage stabilizing module.

[0032] The gas sensor 3 is mainly used to detect the gas concentration in the environment, especially for monitoring gases such as methane and butane. The sensor operates based on semiconductor sensing elements. When gas molecules come into contact with semiconductor materials, the resistance value will change. This change in resistance is proportional to the gas concentration, so by measuring the change in resistance, we can calculate the specific concentration of the gas. The output of the gas sensor 3 is usually an analog signal, which is converted into a voltage signal through a circuit and transmitted to the analog-to-digital converter (ADC) input of the microcontroller. The microcontroller calculates the gas concentration based on the voltage value read by the ADC.

[0033] Before use, the gas sensor 3 needs to be calibrated to ensure its accuracy. The calibration process involves exposing the sensor to a gas environment with a known concentration and recording the corresponding output voltage value to establish a corresponding relationship between the gas concentration and the voltage value. This process is crucial to ensure that the gas sensor 3 can accurately reflect the actual gas concentration.

[0034] The microcontroller is the core control unit of the system and is responsible for coordinating the work of each module. Its main functions include reading sensor data, data processing, information display, controlling the alarm system, and data interaction with the communication module. The microcontroller regularly collects data from the gas sensor 3 through a timer and performs filtering and noise elimination. Based on the processing results, it is determined whether the gas concentration exceeds the safety threshold. If it exceeds the standard, the alarm system is activated and the data is uploaded to the remote server through the wireless communication module.

[0035] The power module provides a stable and reliable power supply for the entire system. The voltage regulator module converts the voltage of the external power supply or battery into the 3.3V or 5V required by the system. In order to facilitate portability and long-term monitoring, lithium batteries are selected as the main power source. Due to their high energy density and long battery life, they can meet the continuous working needs of the equipment in the wild or remote areas. Key modules such as microcontrollers and sensors adopt low-power design and support sleep mode to extend battery life.

[0036] The positioning module uses a GPS positioning module to obtain the current geographical location information of the device (including longitude, latitude and altitude) so that the accident site can be accurately located when a gas leak occurs. The GPS positioning module communicates with the microcontroller through the UART interface. The microcontroller periodically reads the NMEA format data output by the GPS module and parses the location information. The output NMEA format data includes information such as GGA and RMC, providing detailed location information, UTC time and date. The microcontroller packages this data and uploads it to the remote server together with the gas concentration data.

[0037] The wireless communication module is responsible for wireless data transmission, uploading the data collected by the gas sensor 3 and the location information obtained by the GPS positioning module to the remote server for real-time monitoring and alarm. During the system initialization phase, the Wi-Fi module connects to the local wireless network through the preset SSID and password. After the connection is successful, the data packet is uploaded to the preset server address at a fixed time or when the gas concentration exceeds the standard. The data packet contains key information such as gas concentration, location information and timestamp. Data transmission uses encryption protocols (such as HTTPS) to ensure the security and integrity of data during transmission and prevent information from being tampered with or leaked.

[0038] The vibration sensor is used to detect the vibration of the electrofusion welding part to determine whether there is a risk of mechanical damage and to monitor the vibration status of the electrofusion welding part in real time.

[0039] The control flow is summarized as follows:

[0040] System startup function:

[0041] During the system startup phase, all hardware modules must be initialized to ensure they are in an operational state. Subsequently, the Wi-Fi module is connected and ensured to be able to successfully access the wireless network in preparation for data upload.

[0042] Data collection function:

[0043] The system will collect data from the gas sensor 3 at regular intervals and simultaneously obtain the location information of the GPS positioning module. In addition, the system will also extract key information such as the current latitude and longitude and time from the GPS positioning module.

[0044] Data processing functions:

[0045] The collected gas concentration data will be processed by the system to determine whether it exceeds the safety threshold and is ready for upload. The system will compare the calculated results with the preset safety threshold to determine whether the alarm mechanism needs to be activated. If the concentration exceeds the limit, the data will be marked as abnormal and prepared to be sent to the server.

[0046] Display and local alarm function:

[0047] The system displays gas concentration and location information in real time and triggers a local alarm when an over-limit is detected. The gas concentration and location information will be displayed on the display screen for easy viewing by on-site personnel. Once the gas concentration exceeds the limit, the microcontroller will activate the buzzer and LED indicator to send a local alarm signal.

[0048] Data upload function:

[0049] The gas concentration data and GPS location data will be sent to the remote server via the Wi-Fi module. After the upload is completed, the server will return a confirmation message, and the microcontroller will then record the status of the upload.

[0050] Server-side processing functions:

[0051] The server receives the uploaded data, analyzes it and processes the alarm for remote monitoring personnel to view. If the gas concentration exceeds the preset threshold, the server will activate the remote alarm system, send an alarm message to the relevant personnel, and record the specific geographical location and time.

[0052] When abnormal vibration is detected, the system will record the intensity and frequency of the vibration and upload this data to the server. The server will evaluate whether there is structural damage based on the vibration data and take appropriate measures.

[0053] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] 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 and simple improvements made to the essential contents of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent protection device for the welding part of a PE gas pipe, applied to a PE gas pipe, characterized in that: It comprises an upper splint and a lower splint, the cross-sectional shapes of the upper splint and the lower splint are both semicircular, the upper splint and the lower splint are fixedly connected to form a tubular structure, upper wing plates are respectively provided at the left and right ends of the upper splint, a gas sensor is provided on the outer peripheral wall of the upper splint, a controller housing is provided in the middle of the outer peripheral wall of the upper splint, oblong mounting holes are respectively provided on the outer peripheral walls of the upper splint on the left and right sides of the control housing, a control module electrically connected to the gas sensor is provided in the controller housing, the control module is used to upload data collected by the gas sensor to a remote server, lower wing plates are respectively provided at the left and right ends of the lower splint, after the upper splint and the lower splint are fixedly connected, the upper wing plates and the lower wing plates form a tubular structure, the materials of the upper wing plates and the lower wing plates are the same as the materials of the PE gas pipe, and the hardness of the upper wing plates and the lower wing plates are slightly greater than that of the PE gas pipe, and a lifting bracket is detachably connected to the middle of the outer peripheral wall of the lower splint.

2. The intelligent protection device for the welding part of a PE gas pipe according to claim 1 is characterized in that: The inner diameter of the upper wing plate is smaller than the inner diameter of the upper clamping plate, and the upper wing plate is provided with an upper extension portion extending to the inner side of the inner circumferential wall of the upper clamping plate, and the upper extension portion forms an upper limit surface at the end portion within the inner circumferential wall of the upper wing plate. The inner diameter of the lower wing plate is smaller than the inner diameter of the lower clamping plate, and the lower wing plate is provided with a lower extension portion extending to the inner side of the inner circumferential wall of the lower clamping plate, and the lower extension portion forms a lower limit surface at the end portion of the inner circumferential wall of the lower wing plate.

3. The intelligent protection device for the welding part of a PE gas pipe according to claim 2 is characterized in that: Two mounting holes are provided on the outer wall of the upper splint, and the two mounting holes are respectively located on the left and right sides of the controller housing. An air vent is provided on the upper limit surface, and the air vent is connected to the bottom of the mounting hole. Two gas sensors are provided, and the two gas sensors are respectively installed in the two mounting holes. Connecting holes are respectively provided on the left and right side walls of the controller housing, and the gas sensor is electrically connected to the controller module by passing a wire through the connecting hole of the controller housing.

4. The intelligent protection device for the welding part of a PE gas pipe according to claim 3 is characterized in that: The oblong mounting holes are arranged along the circumference of the upper clamping plate.

5. The intelligent protection device for the welding part of a PE gas pipe according to claim 4 is characterized in that: Upper support plates are respectively arranged at the front and rear ends of the lower side of the upper clamping plate, and lower support plates matching the upper support plates are respectively arranged at the front and rear ends of the upper side of the lower clamping plate, and the upper support plate and the lower support plate are fixedly connected by bolts.

6. The intelligent protection device for the welding part of a PE gas pipe according to claim 5, characterized in that: The lifting bracket includes a support plate and two telescopic rods symmetrically arranged on the support plate, the upper ends of the two telescopic rods are fixedly connected to the outer peripheral wall of the lower clamping plate, and the lower ends of the two telescopic rods are fixedly connected to the support plate.

7. The intelligent protection device for the welding part of a PE gas pipe according to claim 6, characterized in that: The telescopic rod comprises a fixing nut, a clamping sleeve, a clamping rod, an inner support rod and an outer sleeve. The upper end of the fixing nut is welded to the outer peripheral wall of the lower clamping plate. The upper half of the inner peripheral wall of the clamping sleeve is provided with a clamping ring. The lower half of the clamping rod is provided with a clamping platform. The clamping sleeve is mounted on the clamping rod. The clamping platform is against the clamping ring. The length of the clamping rod is greater than the length of the clamping sleeve. The clamping rod passes through the clamping sleeve from bottom to top and is threadedly matched with the fixing nut. The upper half of the inner support rod is threadedly matched with the lower half of the clamping sleeve. The lower end of the outer peripheral wall of the inner support rod is provided with two center The outer sleeve is provided with protrusions symmetrically arranged about the center, and the inner circumferential wall of the outer sleeve is respectively provided with guide grooves matching the two protrusions, and the guide grooves are arranged in the vertical direction. The inner circumferential wall of the outer sleeve is provided with a plurality of arc-shaped limit grooves arranged at intervals, and the arc-shaped limit grooves are semi-closed grooves with one end open and the other end closed. The open end of the arc-shaped limit groove is located on the groove wall of one guide groove, and the closed end of the arc-shaped limit groove extends along the circumference of the outer sleeve toward the other guide groove. The inner support rod is screwed and fixed to the outer sleeve through the protrusions and the arc-shaped limit grooves.

8. The intelligent protection device for the welding part of a PE gas pipe according to claim 7, characterized in that: An end cover is sleeved on the inner support rod, and a clamping protrusion matching the guide groove of the outer sleeve is provided on the lower surface of the end cover, and the end cover is fixed to the outer sleeve through the clamping protrusion.

9. The intelligent protection device for the welding part of a PE gas pipe according to claim 1, characterized in that: The invention also includes a rubber protective sleeve, wherein two rubber protective sleeves are provided, and the two rubber protective sleeves are respectively arranged in a cylindrical structure formed by the upper wing plate and the lower wing plate after the upper clamping plate and the lower clamping plate are fixedly connected.

10. The intelligent protection device for the welding part of a PE gas pipe according to claim 1, characterized in that: The control module includes a power module, a voltage stabilizing module, a wireless communication module, a positioning module, a vibration sensor and a microcontroller. The wireless communication module, the positioning module and the gas sensor are all electrically connected to the microcontroller. The power module supplies power to the wireless communication module, the positioning module, the microcontroller, the vibration sensor and the gas sensor through the voltage stabilizing module.

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