Fire-fighting pipe network pressure and leakage monitoring integrated device

Abstract

This invention discloses an integrated device for monitoring pressure and leakage in fire protection pipelines, comprising a detection pipe fitting, a pressure monitoring mechanism, and a leakage monitoring mechanism. The detection pipe fitting has a disassembly block at the middle of the upper part of its outer surface and a storage box at the middle of the middle of the lower part of its outer surface. Water-collecting rings are provided on both the front and rear sides of the outer surface of the detection pipe fitting. The pressure monitoring mechanism includes a connecting sleeve, a limiting head, a limiting groove, a plug, and a limiting assembly. The connecting sleeve is located in the middle of the disassembly block. The limiting heads are respectively located on the front and rear sides of the lower end of the connecting sleeve's outer surface. The limiting groove is located in the middle of the inner wall of the disassembly block, and the outer surface of the limiting heads is slidably connected to the inner wall of the limiting groove. A movable plug is provided in the middle of the lower end of the disassembly block. This integrated device for monitoring pressure and leakage in fire protection pipelines features an integrated design, occupies little space, is easy to install, and can simultaneously accommodate leakage collection and monitoring of both horizontal and vertical pipelines.

Description

Technical Field

[0001] This invention relates to the field of fire protection pipeline monitoring technology, specifically to an integrated device for monitoring the pressure and leakage of fire protection pipelines. Background Technology

[0002] As the main artery of a building's fire protection system, the pressure stability and sealing integrity of the fire protection pipeline network directly affect the reliable supply of firefighting water during a fire. Currently, fire departments generally require real-time or periodic status monitoring of the fire protection pipeline network. The existing practice is to install pressure detection equipment and leakage detection equipment separately on the pipeline. Regarding pressure monitoring, current technology typically uses an external bypass pipe with a ball valve to install the pressure transmitter. A branch pipe is led out from the side of the main pipeline, a ball valve is installed in the middle of the branch pipe, and the pressure transmitter is connected to the end of the branch pipe. During operation, the ball valve is open, and the pressure transmitter senses the pressure in the main pipeline through the branch pipe. When the pressure transmitter needs to be replaced or repaired, the ball valve is closed, isolating the pressure transmitter from the main pipeline for replacement. However, this bypass... The radial dimension of the combination of pipe and ball valve is relatively large, which will excessively occupy the space of underground pump rooms or pipe corridors and is also prone to interference with surrounding pipelines. In addition, most leakage monitoring equipment is an independent cable-type water immersion sensor or acoustic monitoring device. During installation, an additional mounting bracket needs to be laid on the pipe surface for the installation and fixation of the equipment. During the installation process, the leakage sensing wire of the cable-type water immersion sensor is exposed and the wire is easy to get tangled with itself or other lines. This makes the pressure and leakage monitoring systems independent of each other, resulting in inconvenient on-site installation, complicated wiring, and cumbersome later maintenance. At the same time, for vertically arranged fire risers, it is not possible to build a cement weir below the pipe to collect water, and there is a lack of a dedicated, effective and convenient leakage collection and detection structure. Therefore, we propose an integrated device for monitoring pressure and leakage in fire pipeline networks. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an integrated device for monitoring the pressure and leakage of fire protection pipelines. The integrated design has a small overall footprint, is easy to install and lay, and can simultaneously adapt to the collection and monitoring of leakage in both horizontal and vertical pipelines, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated device for monitoring pressure and leakage in fire-fighting pipeline networks, comprising a detection pipe fitting, a pressure monitoring mechanism, and a leakage monitoring mechanism; Testing pipe fitting: A disassembly block is provided at the middle of the upper part of its outer surface, a storage box is provided at the middle of the lower part of its outer surface, and water receiving rings are provided on both the front and rear sides of the outer surface of the testing pipe fitting. Pressure monitoring mechanism: It includes a connecting sleeve, a limiting head, a limiting groove, a plug, and a limiting component. The connecting sleeve is located in the middle of the interior of the disassembly block. The limiting heads are respectively located on the front and rear sides of the lower end of the outer surface of the connecting sleeve. The limiting groove is opened in the middle of the inner wall of the disassembly block. The outer surface of the limiting head is slidably connected to the inner wall of the limiting groove. A movable plug is provided in the middle of the lower end of the disassembly block. The plug is configured to cooperate with the disassembly block. The limiting component is located inside the disassembly block. Leakage detection device: It is installed between the lower end of the detection pipe and the inside of the storage box. It has an integrated design, occupies little space, is easy to install and lay, and can be adapted to both horizontal and vertical pipes for leakage collection and monitoring.

[0005] Furthermore, a pressure relief hole is provided in the middle of the front and rear sides inside the disassembly block, and a mounting bracket is provided in the middle of the lower end of the disassembly block. The lower end of the outer surface of the plug is slidably connected to the inner wall of the mounting bracket. A spring is provided between the upper end of the mounting bracket and the top wall of the plug. The spring is set in the middle of the outer surface of the plug, providing a basis for pressure relief and plug reset during disassembly and assembly.

[0006] Furthermore, the limiting component includes a guide groove, a guide head, and a clearance opening. The guide grooves are all opened inside the upper part of the disassembly block. The guide heads are respectively set on the left and right sides of the top wall of the connecting sleeve. The outer surface of the guide head is slidably connected to the inner wall of the guide groove. The clearance opening is opened at one end of the guide groove in a clockwise direction. The guide head is a stepped column shape that is thinner at the top and thicker at the bottom. The lower end of the outer surface of the guide head is matched with the inner wall of the clearance opening located inside the same guide groove, providing a basis for the movement and limiting of the connecting sleeve.

[0007] Furthermore, the limiting component also includes threaded holes and fixing bolts. The threaded holes are all opened at one end of the bottom wall of the guide groove in a clockwise direction. The fixing bolts are respectively threaded to the front and rear sides of the upper end of the connecting sleeve. The lower end of the outer surface of the fixing bolts is threaded to the inner wall of the vertically adjacent threaded holes, providing a basis for fixing and releasing the connecting sleeve.

[0008] Furthermore, the pressure monitoring mechanism also includes a pressure transmitter and a groove. The pressure transmitter is threadedly connected to the inside of the connecting sleeve and is bidirectionally electrically connected to an external controller. A pressure ring is provided at the lower middle of the connecting sleeve. The detection end of the pressure transmitter is located inside the pressure ring. The lower end of the pressure ring fits against the upper end of the plug. The groove is evenly opened at the lower end of the inside of the pressure ring, providing a basis for pressure monitoring.

[0009] Furthermore, the leakage detection mechanism includes a leakage sensing wire, a conductive slip ring, and contacts. The storage box has storage slots at both the top and bottom. The leakage sensing wire is spirally wound inside the storage slots. The conductive slip rings are rotatably connected to the top and bottom ends in the middle of the storage box. The inner ends of the leakage sensing wires are fixedly connected to the outer surfaces of the longitudinally adjacent conductive slip rings. The contacts are located at the top and bottom ends in the front middle of the storage box. The rear ends of the contacts are in contact with the front ends of the outer surfaces of the longitudinally adjacent conductive slip rings. A leakage controller is located in the middle left side of the detection tube. The output end of the leakage sensing wire is electrically connected to the input end of the conductive slip ring. The output end of the conductive slip ring is electrically connected to the input end of the contacts. The output end of the contacts is electrically connected to the input end of the leakage controller. The leakage controller is bidirectionally electrically connected to an external controller, providing a basis for the precise deployment and retraction of the leakage sensing wire and the monitoring of open water leakage.

[0010] Furthermore, the leakage detection mechanism also includes a drive column, a limiting hole, a second spring, a hexagonal head, and a knob. The drive column is rotatably connected to the inside of the storage box. The inner wall of the conductive slip ring is provided with a hexagonal groove, and the inner wall of the hexagonal groove is slidably connected to the middle of the outer surface of the drive column. The limiting hole is opened in the middle of the lower end of the detection tube. The hexagonal head is fixedly sleeved on the upper end of the outer surface of the drive column. A second spring is provided between the top wall of the limiting hole and the upper end of the hexagonal head. The second spring is sleeved on the upper end of the outer surface of the drive column. The lower end of the limiting hole is a hexagonal hole. The outer surface of the hexagonal head is engaged with the inner wall of the hexagonal hole. The knob is located at the lower end of the drive column, providing a basis for the precise extension and locking of the leakage sensing wire.

[0011] Furthermore, the leakage monitoring mechanism also includes an automatic leakage noise recorder, which is located on the middle right side of the outer surface of the detection pipe fitting. The automatic leakage noise recorder is bidirectionally electrically connected to an external controller and can monitor leakage through sound waves.

[0012] Furthermore, water collection grooves are provided on both the front and rear sides of the water receiving ring, and fixing slots are provided on both the front and rear sides of the lower end of the inside of the water receiving ring. The fixing slots are designed to cooperate with the leakage sensing line, providing a basis for the placement and fixing of the leakage sensing line.

[0013] Furthermore, each of the water receiving rings is formed by two semicircular rings joined end to end by connecting bolts. Positioning holes are provided on the inner right side of the upper semicircular ring and the inner left side of the lower semicircular ring. Positioning posts are provided on the lower left side of the upper semicircular ring and the lower right side of the lower semicircular ring. The outer surface of the positioning posts is inserted into the inner wall of the vertically adjacent positioning holes, providing a basis for the assembly and disassembly of the water receiving rings.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This integrated device for monitoring fire pipeline pressure and leakage has the following advantages: 1. The pressure monitoring and leakage monitoring mechanisms are integrated on the same detection pipe fitting. The detection pipe fitting is directly connected in series to the fire protection pipe network through the connecting flanges at both ends, eliminating the need for external bypass pipes and ball valves. The radial dimension is significantly reduced, avoiding interference with surrounding pipelines. It is particularly suitable for narrow spaces such as pump rooms and pipe corridors. In addition, the rotating snap-fit ​​connection between the connecting sleeve and the disassembly block, as well as the automatic sealing of the plug, also ensures the online replacement function of the pressure transmitter without water interruption, greatly reducing the maintenance difficulty of the monitoring device and the risk of water outage.

[0015] 2. The leak detection wire can be locked and released by moving the drive column and knob up and down. With the guidance and limit of the storage slot, the leak detection wire can be spirally coiled and stored inside the storage box. When pulled out, the length of the leak detection wire can be precisely controlled, which not only allows for flexible leak detection but also avoids the situation where the leak detection wire is excessively exposed and tangled.

[0016] 3. When monitoring horizontal pipes, the leakage sensing wire is laid inside the external cement weir for open water leak detection. The water receiving ring can be fitted onto the surface of the pipe fitting without affecting the monitoring. When monitoring vertical pipes, the water receiving ring can be fitted onto the outer surface of the vertical pipe, allowing the water collection tank to collect the leaking water flowing down the pipe wall. The leakage sensing wire is fixed inside the water collection tank by a fixing clip, which solves the problem of not being able to build a cement weir for water collection and open water leak detection for vertical pipes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the pipe fitting tested according to the present invention; Figure 3 This is a schematic diagram of the water inlet ring of the present invention; Figure 4 This is a schematic diagram of the pressure monitoring mechanism of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the pressure monitoring mechanism of the present invention; Figure 6 This is a schematic cross-sectional view of the limiting component of the present invention; Figure 7 This is a schematic diagram of the leakage sensing line of the present invention.

[0018] In the diagram: 1. Detection fitting, 2. Disassembly block, 3. Storage box, 4. Water receiving ring, 5. Pressure monitoring mechanism, 51. Connecting sleeve, 52. Limiting head, 53. Limiting groove, 54. Plug, 55. Limiting component, 551. Guide groove, 552. Guide head, 553. Circumvention port, 554. Threaded hole, 555. Fixing bolt, 56. Pressure transmitter, 57. Groove, 6. Leakage monitoring mechanism, 61. Leakage sensing line, 62. Conductive slip ring, 63. Contact, 64. Drive column, 65. Limiting hole, 66. Spring II, 67. Hexagonal head, 68. Knob, 69. Automatic leak noise recorder, 7. Spring I, 8. Storage groove, 9. Leakage controller, 10. Water collection tank, 11. Fixing bayonet, 12. Positioning hole, 13. Positioning column, 14. Connecting bolt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-7 This embodiment provides a technical solution: an integrated device for monitoring pressure and leakage in fire protection pipelines, including a detection pipe fitting 1, a pressure monitoring mechanism 5, and a leakage monitoring mechanism 6; Inspection fitting 1: A disassembly block 2 is provided at the middle of the upper part of its outer surface. The disassembly block 2 is cylindrical in shape. A storage box 3 is provided at the middle of the lower part of the outer surface of inspection fitting 1. The storage box 3 is disc-shaped in shape. Both ends of the front and rear sides of inspection fitting 1 are provided with connecting flanges. Inspection fitting 1 is available in various diameter specifications. The outer surface of inspection fitting 1 is provided with an installation plane for equipment connection. Both the front and rear sides of the outer surface of inspection fitting 1 are provided with water receiving rings 4. Inspection fitting 1 is available in various diameter specifications. The diameter of the water receiving rings 4 on the outer surface of inspection fitting 1 is compatible with the outer diameter of inspection fitting 1. In all specifications of inspection fitting 1, the specifications of the parts where the surface of inspection fitting 1 connects with the disassembly block 2 and the storage box 3 are the same. For fire protection pipelines of different diameters, only the inspection fitting 1 of the corresponding diameter needs to be selected. The disassembly block 2 can be fixed to the middle of the upper part of the outer surface of inspection fitting 1 by external bolt 1. The storage box 3 can be fixed to the middle of the lower part of the outer surface of inspection fitting 1 by external bolt 2. Pressure monitoring mechanism 5 includes a connecting sleeve 51, a limiting head 52, a limiting groove 53, a plug 54, and a limiting component 55. The connecting sleeve 51 is located in the middle of the interior of the disassembly block 2. Two O-rings made of nitrile rubber are provided at the lower end of the outer surface of the connecting sleeve 51 to prevent pressurized water from leaking between the connecting sleeve 51 and the disassembly block 2. The limiting head 52 is located on the front and rear sides of the lower end of the outer surface of the connecting sleeve 51. The limiting head 52 can be connected to the internal thread of the connecting sleeve 51 via a threaded head. The limiting groove 53 is located in the middle of the inner wall of the disassembly block 2. The outer surface of the limiting head 52 is slidably connected to the inner wall of the limiting groove 53. The limiting groove 53 consists of two symmetrically distributed vertical grooves at the top and a circular groove at the bottom. The vertical grooves are located inside the disassembly block 2. On the left and right sides of the upper end of the wall, the annular groove is located at the lower end of the inner wall of the disassembly block 2. The lower end of the vertical groove is connected to the annular groove. This groove allows the limiting head 52 to slide up and down along the vertical groove and also rotate around the annular groove. A movable plug 54 is provided in the middle of the lower end of the disassembly block 2. The plug 54 is set to cooperate with the disassembly block 2. The upper end of the plug 54 is an arc-shaped spherical surface, and the lower end is a hexagonal guide rod. The spherical surface of the plug 54 and the lower end of the disassembly block 2 can form a sealing pair. Pressure relief holes are opened in the middle of the front and rear sides inside the disassembly block 2. The pressure relief holes can connect the inner cavity of the disassembly block 2 with the external atmosphere. The setting height of the pressure relief holes is higher than the normal working position of the rubber sealing ring. When the connecting sleeve 51 is lifted upward, the rubber sealing ring passes over the pressure relief hole and remains in the inner cavity of the disassembly block 2. The pressurized water can be discharged from the pressure relief hole to achieve automatic pressure relief. A mounting bracket is provided at the lower center of the disassembly block 2. The lower end of the outer surface of the plug 54 is slidably connected to the inner wall of the mounting bracket. A spring 7 is provided between the upper end of the mounting bracket and the top wall of the plug 54. The spring 7 is sleeved in the middle of the outer surface of the plug 54. In its free state, the spring 7 can push the plug 54 upwards, keeping the spherical surface of the plug 54 sealed to the lower end of the disassembly block 2. When the connecting sleeve 51 is pressed down, the spring 7 is compressed, and the plug 54 moves down to open the liquid passage. The disassembly block 2 is composed of upper and lower parts, facilitating the installation and replacement of the internal structure. The arc-shaped spherical surface of the plug 54 is connected to the hexagonal guide rod by threads, allowing for disassembly and assembly. This allows for periodic replacement of the spring 7 to prevent aging and failure. The pressure relief and resetting of the plug 54 during disassembly and assembly provide a basis. The limiting component 55 is located inside the disassembly block 2. The limiting component 55 includes a guide groove 551, a guide head 552, and a clearance opening 553. The guide grooves 551 are all opened at the upper end of the disassembly block 2. The guide heads 552 are respectively located on the left and right sides of the top wall of the connecting sleeve 51. The outer surface of the guide head 552 is slidably connected to the inner wall of the guide groove 551. The clearance opening 553 is opened at one end of the guide groove 551 in a clockwise direction. The guide head 552 is a stepped column shape that is thinner at the top and thicker at the bottom. The lower end of the outer surface of the guide head 552 is matched with the inner wall of the clearance opening 553 located inside the same guide groove 551. The clearance opening 553 is a circular through hole located at the clockwise end of the guide groove 551.When the guide head 552 moves directly below the clearance opening 553, the thicker section of the guide head 552 can pass through the clearance opening 553, allowing the connecting sleeve 51 to be pulled out. This provides a basis for the movement and limiting of the connecting sleeve 51. The limiting component 55 also includes threaded holes 554 and fixing bolts 555. The threaded holes 554 are all located at one end of the bottom wall of the guide groove 551 in a clockwise direction. The fixing bolts 555 are threaded to the front and rear sides of the upper inner end of the connecting sleeve 51, respectively. The lower end of the outer surface of the fixing bolts 555 is threaded to the inner wall of the vertically adjacent threaded holes 554. When the connecting sleeve 51 rotates to its position, the lower end of the fixing bolt 555 is exactly aligned with the threaded hole 554. After tightening, the connecting sleeve 51 cannot rotate, thus locking it and providing a basis for the fixing and releasing of the connecting sleeve 51. Leakage detection mechanism 6: It is set between the lower end of the detection pipe fitting 1 and the inside of the storage box 3. It has an integrated design, occupies little space, is easy to install and lay, and can also adapt to the collection and monitoring of leakage in both horizontal and vertical pipes. The pressure monitoring mechanism 5 also includes a pressure transmitter 56 and a groove 57. The pressure transmitter 56 is threaded into the middle of the connecting sleeve 51. The pressure transmitter 56 is bidirectionally electrically connected to an external controller. The pressure transmitter 56 can convert the pressure signal into a standard electrical signal output. When the pressure of the measured medium acts on the internal sensor diaphragm, the diaphragm deforms. The piezoresistive sensor utilizes the piezoresistive effect of diffused silicon to change the resistance value. This change is converted into a voltage signal proportional to the pressure by a Wheatstone bridge. After amplification, linearization, and temperature compensation by the signal conditioning circuit, a 4-20mA standard current signal is finally output to the external controller. The pressure transmitter 56 can be an AOB-131 series diffused silicon pressure transmitter, which adopts a 316L stainless steel isolation diaphragm structure, has a built-in micro amplifier, supports 4-20mA two-wire standard signal output, has a range of 0-1.6MPa, an accuracy of 0.5 class, a power supply of 24V DC, and an IP65 enclosure protection rating, providing vibration and shock resistance. The external controller can be a SIMATIC. The S7-1200 series programmable logic controller features a compact and modular design, integrating analog input channels to directly acquire 4-20mA current signals from the pressure transmitter 56. A pressure ring is located at the lower center of the connecting sleeve 51, with the detection end of the pressure transmitter 56 situated inside the pressure ring. The lower end of the pressure ring fits against the upper end of the plug 54. Grooves 57 are evenly distributed within the lower end of the pressure ring. The pressure ring and connecting sleeve 51 are integrally machined, forming a circular boss. The lower end face of the pressure ring contacts the upper spherical surface of the plug 54, while the grooves 57 facilitate liquid flow, providing a foundation for pressure monitoring. The leakage detection mechanism 6 includes a leakage sensing wire 61, a conductive slip ring 62, and a contact 63. The storage box 3 has storage slots 8 at both the top and bottom. The leakage sensing wire 61 is spirally wound inside the storage slot 8. The storage box 3 has receiving and releasing holes on both the left and right sides. The outer surface of the leakage sensing wire 61 passes through the corresponding receiving and releasing holes. The storage slot 8 is cylindrical and is used to accommodate the spirally wound leakage sensing wire 61. The upper and lower inner walls of the storage slot 8 are in close contact with the outer surface of the leakage sensing wire 61. The leakage sensing wire 61 detects leakage based on the principle of liquid conductivity. Inside the leakage sensing wire 61 are two wires made of conductive polymer, with a precision-machined resistance value per unit length, continuously distributed along the entire length of the sensing wire. When water comes into contact with any point along the sensing wire... When water is exposed to water, the conductive polymer between the two wires short-circuits, causing a sudden change in the resistance of the entire circuit. By detecting this resistance change, it is possible to accurately determine whether a leak has occurred. The leak detection wire 61 is a non-positioning leak detection wire, with two conductive polymer core wires inside and a braided shielding layer and wear-resistant sheath on the outside. When the detection wire comes into contact with water, its resistance drops from infinity to several kΩ, and the response time is ≤1 second. The conductive slip rings 62 are rotatably connected to the upper and lower ends of the middle of the storage box 3. The inner ends of the leak detection wire 61 are fixedly connected to the outer surface of the longitudinally adjacent conductive slip rings 62. The contacts 63 are respectively set at the upper and lower ends of the front middle of the storage box 3. The rear ends of the contacts 63 are all in contact with the front end of the outer surface of the longitudinally adjacent conductive slip rings 62. Contact 62 and contact 63 ensure that the leakage sensing wire 61 can transmit signals while rotating. A leakage controller 9 is located in the middle of the left side of the detection pipe fitting 1. The output end of the leakage sensing wire 61 is electrically connected to the input end of the conductive slip ring 62, the output end of the conductive slip ring 62 is electrically connected to the input end of the contact 63, and the output end of the contact 63 is electrically connected to the input end of the leakage controller 9. The leakage controller 9 is bidirectionally electrically connected to an external controller. The leakage controller 9 can monitor the change in the loop resistance of the leakage sensing wire 61 in real time to determine the leakage status. Under normal circumstances, the loop resistance of the leakage sensing wire 61 remains stable. When the leakage sensing wire 61 encounters water, the conductivity of the water short-circuits the two conductive polymer wire cores, causing a sudden decrease in loop resistance. The leakage controller 9 detects this. The resistance change is processed and analyzed by the internal integrated circuit, triggering the alarm circuit to output an alarm signal. The leak controller 9 can be an OM-LDA-DB6015 water immersion controller, which can be connected to audible and visual alarms, smart alarms, and automatic valves for linkage control and output switch signals. It supports wire breakage detection function, providing a basis for the accurate deployment and retraction of the leak sensing wire 61 and the monitoring of open water leaks. The leak detection mechanism 6 also includes a drive column 64, a limit hole 65, a spring 66, a hexagonal head 67, and a knob 68. The drive column 64 is rotatably connected to the middle of the inside of the storage box 3. The inner wall of the conductive slip ring 62 is provided with a hexagonal groove in the middle, and the inner wall of the hexagonal groove is slidably connected to the middle of the outer surface of the drive column 64. The limit hole 65 is opened in the middle of the lower end of the detection pipe 1.A hexagonal head 67 is fixedly sleeved on the upper part of the outer surface of the drive column 64. A second spring 66 is provided between the top wall of the limiting hole 65 and the upper end of the hexagonal head 67. The second spring 66 is sleeved on the upper part of the outer surface of the drive column 64. The second spring 66 can be replaced periodically by disassembling and assembling the storage box 3 to avoid aging and failure. The lower end of the inner part of the limiting hole 65 is a hexagonal hole. The outer surface of the hexagonal head 67 is engaged with the inner wall of the hexagonal hole. A knob 68 is located at the lower end of the drive column 64. Both the upper and lower ends of the storage box 3 are provided with removable covers for the installation and replacement of the internal structure, providing a basis for the precise deployment and locking of the leakage sensing wire 61. The leakage monitoring mechanism 6 also includes an automatic leakage noise recorder 69, which is located on the right side of the outer surface of the detection pipe fitting 1. The automatic leakage noise recorder 69 is bidirectionally electrically connected to an external controller. The automatic leakage noise recorder 69 uses the principle of sound waves to capture pipeline leakage signals. When a pipeline leaks, a specific frequency of leakage sound waves will be generated at the leak point due to the impact of water pressure and will continue to propagate outward along the pipe wall and the water inside the pipe. The high-sensitivity piezoelectric accelerometer built into the recorder is closely attached to the pipe wall and automatically captures the leakage sound waves and converts them into electrical signals, thereby realizing automatic monitoring and early warning of pipeline leakage. The automatic leakage noise recorder 69 can be an MXT08 type pipeline leakage noise recorder, which uses a high-sensitivity piezoelectric ceramic sensor with an audio range of 20-100KHz. It has a built-in attitude sensor for equipment abnormality alarm, and the protection level is IP68 for the sensor and IP67 for the host. It also supports magnetic suction and clamp installation. It can monitor leakage through sound waves. Water collecting grooves 10 are provided on both the front and rear sides of the water collecting ring 4. The water collecting grooves 10 are semi-circular annular grooves. Fixing slots 11 are provided on both the front and rear sides of the lower end of the water collecting ring 4. The fixing slots 11 are designed to cooperate with the leakage sensing wire 61. The fixing slots 11 are semi-circular slots. Each water collecting ring 4 has four fixing slots 11, two on the front and two on the back. The leakage sensing wire 61 can be locked inside the fixing slots 11, providing a basis for the placement and fixation of the leakage sensing wire 61. Each water collecting ring 4 consists of two semi-circular rings connected by screws. The bolt 14 is formed by joining the two semicircular rings together. The two semicircular rings are injection molded or cast from the same mold. Each semicircular ring has ear plates at both ends, and through holes are opened on the ear plates for installing the connecting bolt 14. Positioning holes 12 are opened on the inner right side of the upper semicircular ring and the inner left side of the lower semicircular ring. Positioning pins 13 are opened on the lower left side of the upper semicircular ring and the lower right side of the lower semicircular ring. The outer surface of the positioning pins 13 is inserted into the inner wall of the vertically adjacent positioning holes 12, providing a basis for the disassembly and assembly of the water receiving ring 4.

[0021] The working principle of the integrated fire protection network pressure and leakage monitoring device provided by this invention is as follows: Before using the integrated fire protection network pressure and leakage monitoring device, the equipment is first installed. The entire integrated fire protection network pressure and leakage monitoring device uses the detection pipe fitting 1 as the core carrier. The front and rear ends of the detection pipe fitting 1 are equipped with connecting flanges, which can be connected in series to the fire protection network, so that the axis of the device coincides with the axis of the fire protection pipeline. The detection pipe fitting 1 has various specifications with different diameters. The diameter of the water receiving ring 4 on the outer surface of the detection pipe fitting 1 is adapted to the outer diameter of the detection pipe fitting 1. Among all specifications of detection pipe fitting 1, the surface of the detection pipe fitting 1 is connected to the water receiving ring 4 on the outer surface of the detection pipe fitting 1. The specifications of the connection parts of the mounting block 2 and the storage box 3 are the same. For fire pipelines with different pipe diameters, only the detection pipe fitting 1 of the corresponding diameter needs to be selected. The mounting block 2 can be fixed to the middle of the upper part of the outer surface of the detection pipe fitting 1 by external bolt one. The storage box 3 can be fixed to the middle of the lower part of the outer surface of the detection pipe fitting 1 by external bolt two. For horizontal pipes, a cement weir can be built on site below the pipe for water collection. After the leakage sensing line 61 is pulled out of the storage box 3 to a precise length, it can be directly laid inside the cement weir. For vertical pipes, the water receiving ring 4 can be fitted on the outer surface of the fire pipeline to collect the leakage water flowing down the pipe wall. Under normal operating conditions, the pressure transmitter 56 is threaded into the middle of the connecting sleeve 51. The connecting sleeve 51 is inserted into the disassembly block 2. When the connecting sleeve 51 is inserted into place, the pressure ring at the lower end of the connecting sleeve 51 will press down on the plug 54, and then overcome the elastic force of the spring 7 to drive the plug 54 to move downward, so that the upper end of the plug 54 separates from the lower end of the disassembly block 2, forming a liquid transmission channel. The water in the fire protection pipe network first enters the detection fitting 1, and then enters the groove 57 through the liquid transmission channel, directly acting on the detection end of the pressure transmitter 56. The pressure transmitter 56 converts the pressure signal into an electrical signal and sends it to the external controller to realize real-time monitoring of the pressure of the fire protection pipe network. When the pressure transmitter 56 needs to be replaced or repaired, first loosen the fixing bolt 555 by rotating it in reverse, so that the fixing bolt 555 is separated from the threaded hole 554, but still connected to the internal thread of the connecting sleeve 51 (to facilitate the rotation and lifting of the connecting sleeve 51). The connecting sleeve 51 loses its limiting effect with the disassembly block 2. Then rotate the connecting sleeve 51 clockwise. In the initial state, the two guide heads 552 are distributed left and right, and the two limiting heads 52 are distributed front and back. The guide heads 552 slide clockwise along the guide groove 551, while the limiting heads 52 slide clockwise along the limiting groove 551. The lower annular groove 3 slides counterclockwise. When the guide head 552 slides to be vertically adjacent to the clearance opening 553, the limiting head 52 slides exactly below the vertical groove above the limiting groove 53. At this time, pinch the fixing bolt 555 and pull the connecting sleeve 51 upward. The guide head 552 passes through the clearance opening 553, and the limiting head 52 slides upward along the vertical groove. As the connecting sleeve 51 moves upward, the lower end of the pressure ring gradually disengages from the plug 54. Spring 7 pushes the plug 54 upward to reset, sealing the liquid transmission channel. At the same time, the connecting sleeve 5... 1. The rubber sealing ring at the lower end of the outer surface moves upward past the pressure relief hole, and the residual pressurized water inside the disassembly block 2 is discharged from the pressure relief hole, achieving automatic pressure relief (pressure relief also facilitates the quick reset of the plug 54). At this time, due to the sealing of the plug 54, the water inside the fire pipeline will not leak further. Then, the pressure transmitter 56 can be reversed to unscrew the pressure transmitter 56 from the connecting sleeve 51 for replacement. Then, screw on the new pressure transmitter 56 and operate in the reverse order: move the connecting sleeve 51 down so that the limiting head 52 enters the space below the limiting groove 53. Inside the annular groove, the connecting sleeve 51 is rotated counterclockwise, causing the guide head 552 to slide into the guide groove 551. The limiting head 52 slides completely into the annular groove below the limiting groove 53. During this process, the pressure ring will press down on the plug 54, and the upper end of the plug 54 will separate from the lower end of the disassembly block 2, forming a liquid transmission channel. At the same time, the rubber sealing ring at the lower end of the outer surface of the connecting sleeve 51 moves downward past the pressure relief hole, forming a sealing effect between the disassembly block 2 and the connecting sleeve 51. Finally, the fixing bolt 555 is tightened to complete the locking, realizing the online replacement of the pressure transmitter 56. When laying the leakage sensing wire 61, push the knob 68 upwards to move the drive column 64 upwards against the elastic force of the spring 66, causing the hexagonal head 67 to disengage from the hexagonal hole at the lower end of the limiting hole 65, thus releasing the lock between the knob 68 and the drive column 64. Then, rotate the knob 68 counterclockwise to rotate the drive column 64, which in turn rotates the conductive slip ring 62, pulling out the leakage sensing wire 61 spirally wound in the collection groove 8 (the leakage sensing wire 61 can be manually pulled out). The leakage sensing wire 61 is then pulled out of the collection box 3. The operator can pull out the appropriate length of leakage sensing wire 61 according to the needs of the water collection area on site and lay the leakage sensing wire 61 in the cement weir groove below the horizontal pipe. For vertical pipes, the leakage sensing wire 61... It can be laid inside the water collection tank 10. The water receiving ring 4 can be removed from the surface of the detection pipe fitting 1 by disassembling and assembling the connecting bolt 14, and then fixedly sleeved on the surface of the fire pipe network at a suitable position. The pulled-out leakage sensing wire 61 is first inserted into the inside of the left fixed slot 11, and after rotating counterclockwise one turn, it is inserted into the inside of the right fixed slot 11, so that the leakage sensing wire 61 forms a cross at the fixed slot 11, ensuring that the sensing wire remains stable in the water collection tank 10 and can fully contact the water. After the leakage sensing wire 61 is pulled out to a suitable length, the knob 68 is released, the spring 2 66 is reset, driving the drive column 64 and the hexagonal head 67 to move down, and the hexagonal head 67 is re-clamped into the hexagonal hole, locking the pulled-out length of the leakage sensing wire 61, and realizing the precise laying of the leakage sensing wire 61. When it is necessary to retract the leakage sensing wire 61, repeat the above steps, rotate the knob 68 clockwise, and drive the drive column 64 to drive the conductive slip ring 62 to rotate clockwise. Under the resistance of friction between the leakage sensing wire 61 and the storage box 3 storage hole, the pulling of the conductive slip ring 62, and the guiding and limiting of the storage groove 8, the leakage sensing wire 61 can be tightly retracted into the storage groove 8, realizing the orderly storage of the leakage sensing wire 61 and avoiding the occurrence of tangling due to excessive exposure of the wire. When a leak occurs in the fire protection pipe network, the leaking water from the horizontal pipe will drip into the cement weir below, and then collect until it submerges the leak detection line 61 in the cement weir. The leaking water from the vertical pipe will flow down the pipe wall and enter the water collection tank 10 of the water receiving ring 4, submerging the leak detection line 61 in the water collection tank 10. When the leak detection line 61 comes into contact with water, its resistance changes. This signal is transmitted to the leak controller 9 through the conductive slip ring 62 and the contact 63. The leak controller 9 processes and analyzes the signal to determine whether a leak has occurred, and transmits the alarm signal to the external controller to realize real-time monitoring of open water leaks. During the monitoring process, the automatic water leakage noise recorder 69 is closely attached to the outer wall of the detection pipe fitting 1. When a leak occurs in the fire protection pipe network, a sound wave of a specific frequency will be generated at the leak point. This sound wave will propagate along the pipe wall and the water inside the pipe. The automatic water leakage noise recorder 69 can continuously capture these sound wave signals, convert them into electrical signals, and send them to the external controller. The external controller then analyzes and processes the sound wave signals and combines them with the open water detection signal from the leakage sensing line 61 to achieve dual redundant monitoring of sound waves and open water, thereby improving the accuracy and reliability of water leakage monitoring and alarm.

[0022] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An integrated device for monitoring pressure and leakage in fire-fighting pipelines, characterized in that: Includes a testing fitting (1), a pressure monitoring mechanism (5), and a leakage monitoring mechanism (6); Testing pipe fitting (1): a disassembly block (2) is provided at the middle of the upper part of its outer surface, a storage box (3) is provided at the middle of the lower part of the outer surface of the testing pipe fitting (1), and water receiving rings (4) are provided on both the front and rear sides of the outer surface of the testing pipe fitting (1). Pressure monitoring mechanism (5): It includes a connecting sleeve (51), a limiting head (52), a limiting groove (53), a plug (54), and a limiting component (55). The connecting sleeve (51) is located in the middle of the interior of the disassembly block (2). The limiting head (52) is located on the front and rear sides of the lower end of the outer surface of the connecting sleeve (51). The limiting groove (53) is opened in the middle of the inner wall of the disassembly block (2). The outer surface of the limiting head (52) is slidably connected to the inner wall of the limiting groove (53). A movable plug (54) is provided in the middle of the lower end of the disassembly block (2). The plug (54) is configured to cooperate with the disassembly block (2). The limiting component (55) is located inside the disassembly block (2). Leakage detection mechanism (6): It is located between the lower end of the detection pipe (1) and the inside of the storage box (3).

2. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 1, characterized in that: Pressure relief holes are provided in the middle of the front and rear sides inside the disassembly block (2). A mounting bracket is provided in the middle of the lower end of the disassembly block (2). The lower end of the outer surface of the plug (54) is slidably connected to the inner wall of the mounting bracket. A spring (7) is provided between the upper end of the mounting bracket and the top wall of the plug (54). The spring (7) is sleeved in the middle of the outer surface of the plug (54).

3. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 1, characterized in that: The limiting component (55) includes a guide groove (551), a guide head (552), and a clearance opening (553). The guide groove (551) is opened at the upper inside of the disassembly block (2). The guide head (552) is respectively set on the left and right sides of the top wall of the connecting sleeve (51). The outer surface of the guide head (552) is slidably connected to the inner wall of the guide groove (551). The clearance opening (553) is opened at one end of the guide groove (551) in a clockwise direction. The guide head (552) is a stepped column shape that is thinner at the top and thicker at the bottom. The lower end of the outer surface of the guide head (552) is matched with the inner wall of the clearance opening (553) located in the same guide groove (551).

4. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 3, characterized in that: The limiting component (55) also includes threaded holes (554) and fixing bolts (555). The threaded holes (554) are all opened at one end of the bottom wall of the guide groove (551) in the clockwise direction. The fixing bolts (555) are respectively threaded to the front and rear sides of the upper end of the connecting sleeve (51). The lower end of the outer surface of the fixing bolts (555) is threaded to the inner wall of the vertically adjacent threaded holes (554).

5. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 1, characterized in that: The pressure monitoring mechanism (5) also includes a pressure transmitter (56) and a groove (57). The pressure transmitter (56) is threadedly connected to the inside of the connecting sleeve (51). The pressure transmitter (56) is bidirectionally electrically connected to an external controller. A pressure ring is provided at the lower middle of the connecting sleeve (51). The detection end of the pressure transmitter (56) is located inside the pressure ring. The lower end of the pressure ring fits against the upper end of the plug (54). The groove (57) is evenly opened at the lower end of the inside of the pressure ring.

6. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 5, characterized in that: The leakage detection mechanism (6) includes a leakage sensing wire (61), a conductive slip ring (62), and a contact (63). The storage box (3) has storage slots (8) at both the top and bottom. The leakage sensing wire (61) is spirally wound inside the storage slot (8). The conductive slip rings (62) are rotatably connected to the top and bottom ends of the storage box (3). The inner ends of the leakage sensing wires (61) are fixedly connected to the outer surfaces of the longitudinally adjacent conductive slip rings (62). The contacts (63) are respectively located in the storage box. (3) The upper and lower ends of the inner middle front side and the rear end of the contact (63) are in contact with the front end of the outer surface of the longitudinally adjacent conductive slip ring (62). A water leakage controller (9) is provided in the middle left side of the detection pipe (1). The output end of the leakage sensing line (61) is electrically connected to the input end of the conductive slip ring (62). The output end of the conductive slip ring (62) is electrically connected to the input end of the contact (63). The output end of the contact (63) is electrically connected to the input end of the water leakage controller (9). The water leakage controller (9) is bidirectionally electrically connected to the external controller.

7. The integrated device for monitoring fire-fighting pipeline pressure and leakage according to claim 6, characterized in that: The leakage detection mechanism (6) also includes a drive column (64), a limiting hole (65), a second spring (66), a hexagonal head (67), and a knob (68). The drive column (64) is rotatably connected to the middle of the inside of the storage box (3). The inner wall of the conductive slip ring (62) is provided with a hexagonal groove. The inner wall of the hexagonal groove is slidably connected to the middle of the outer surface of the drive column (64). The limiting hole (65) is opened in the middle of the lower part of the inside of the detection tube (1). The hexagonal head (67) is fixedly sleeved on the upper part of the outer surface of the drive column (64). The top wall of the limiting hole (65) and the upper end of the hexagonal head (67) are provided with a second spring (66). The second spring (66) is sleeved on the upper part of the outer surface of the drive column (64). The lower part of the inside of the limiting hole (65) is a hexagonal hole. The outer surface of the hexagonal head (67) is engaged with the inner wall of the hexagonal hole. The knob (68) is located at the lower end of the drive column (64).

8. The integrated device for monitoring fire pipeline pressure and leakage according to claim 5, characterized in that: The water leakage monitoring mechanism (6) also includes an automatic water leakage noise recorder (69), which is located on the right middle part of the outer surface of the detection pipe (1) and is bidirectionally electrically connected to an external controller.

9. The integrated device for monitoring fire pipeline pressure and leakage according to claim 6, characterized in that: Water collection grooves (10) are provided on both the front and rear sides of the water receiving ring (4), and fixed slots (11) are provided on both the front and rear sides of the lower end of the water receiving ring (4). The fixed slots (11) are configured in conjunction with the leakage sensing line (61).

10. The integrated device for monitoring fire pipeline pressure and leakage according to claim 9, characterized in that: The water receiving ring (4) is formed by connecting two semicircular rings, one above the other, with the ends joined together by connecting bolts (14). The upper semicircular ring has a positioning hole (12) on the right side inside and the lower semicircular ring has a positioning post (13) on the left side of the lower end of the upper semicircular ring and the right side of the lower semicircular ring. The outer surface of the positioning post (13) is inserted into the inner wall of the vertically adjacent positioning hole (12).

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