Pipe explosion prevention and control signal detection device for small-caliber water supply pipeline

Abstract

The utility model relates to a signal detection device for realizing safety monitoring of a water supply pipeline in water supply and drainage engineering. A small-caliber water supply pipeline explosion prevention and control signal detection device comprises a pipe body fixing device and a resistance strain gauge sensor, the pipe body fixing device is installed outside a water supply pipe in a buckled mode through a two-half split structure and fixed through a screw and a fastening nut, and the outline of an inner cavity of the pipe body fixing device is matched with the outer diameter of the water supply pipe; the resistance strain gauge sensor is arranged between the outer surface of the water supply pipe and the inner side of the pipe body fixing device; a strain torsion sensor is arranged on the connecting screw rod of the pipe body fixing device, and the strain torsion sensor is fixed on the connecting screw rod through a fastening nut; and signal lines are respectively led out from the strain torsion sensor and the resistance strain gauge sensor. The torsion sensor is arranged on the pipe body fixing device, so that the tightness degree of a screw can be detected, and equipment faults can be found in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the signal detection device of realization water supply pipeline safety monitoring in water supply and drainage engineering. BACKGROUND

[0002] The construction of urban water supply system is the basis of urban water supply construction, which is composed of water supply source system, water supply treatment system and water supply pipe network system. Due to the embedding effect and the pipe diameter factor, the pipe burst accident of small diameter water supply pipeline has smaller disturbance, and it is not convenient to check the leakage position during pipeline operation period, causing a large waste of water resources. In addition, part of the pipe network is seriously aged, and the management and maintenance level is relatively low, and various reasons lead to the increasingly serious leakage of the pipeline.

[0003] During the operation of the pipeline, the environment is complex, there are problems such as material failure, pipe body corrosion, external damage and aging, which lead to pipeline leakage. Through investigation and research at home and abroad, it is found that foreign research is committed to improving the strength and durability of water supply pipeline, optimizing the structure design, and exploring new maintenance and repair methods. The research on water supply pipeline at home mainly focuses on pipeline materials, construction and maintenance, and the research on the problem of burst at the bend is relatively less. For water supply pipeline burst prevention and safety monitoring, signal detection is the key to realize pipeline health condition monitoring and safety prevention, and whether the signal detection device is in normal working state also relates to the accuracy and timeliness of the detected signal.

[0004] The invention patent with application number CN202110592651.4 discloses a fire hydrant valve plug, a fire fighting system and a monitoring method thereof, comprising a valve plate and a water pressure detection sensor, the valve plate is provided with a cavity for accommodating the water pressure detection sensor, the water pressure detection sensor comprises a strain gauge and a signal processing module, a wireless communicator and a battery are further arranged in the valve plate, the center of one end of the valve plate is a sensitive area for water pressure detection, the strain gauge is attached to the inner wall of the sensitive area, and a Wheatstone bridge composed of the signal processing module and the strain gauge is connected. When the water pressure changes, the sensitive area will produce corresponding deformation, the resistance of the strain gauge will also change accordingly, the bridge will lose balance and output an electric signal proportional to the water pressure, so that the water pressure detection is realized.

[0005] This kind of technology can conveniently complete the real-time detection of the water pressure in the fire hydrant. For the monitoring of the water supply condition of the fire hydrant and the small diameter water supply pipeline of urban water supply, it is also necessary to ensure that the working state of the water pressure detection device is normal. UTILITY MODEL CONTENTS

[0006] The utility model discloses a kind of small-diameter water supply pipeline burst prevention and control signal detection devices for the prior art deficiency, by installing torsion sensor in pipe body fixing device, the degree of screw tightness can be detected, and equipment failure is found in time.

[0007] The utility model discloses the technical scheme that adopts:

[0008] A small-bore water supply pipeline burst prevention and control signal detection device, including pipe body fixing device (1) and resistance strain gauge sensor (5), the pipe body fixing device adopts two half split type structure buckle installation in the water supply pipe, and is fixed through screw rod, fastening nut, and its inner cavity contour and water supply pipe outer diameter match, resistance strain gauge sensor (5) is arranged between the water supply pipe (6) outer surface and the inboard of pipe body fixing device (1), be equipped with strain torque sensor (4) on the connecting screw rod of pipe body fixing device, strain torque sensor (4) is fixed on the connecting screw rod through fastening nut, signal line is led out from resistance strain gauge sensor (5) and strain torque sensor (4) respectively.

[0009] The pipe body fixing device (1) adopts two pieces of L-shaped galvanized steel plate butt joint, which is sleeved on the elbow of the water supply pipeline to disperse the pressure of the pipeline elbow.

[0010] The small-bore water supply pipeline burst prevention and control signal detection device is provided with enhanced inclined racks (3) at the two ends of the two L-shaped galvanized steel plates of the pipe body fixing device (1), and the two ends of each enhanced inclined rack (3) are fixedly connected with the two ends of the corresponding galvanized steel plate to increase the stability and service life of the device.

[0011] The small-bore water supply pipeline burst prevention and control signal detection device is provided with a heat preservation layer between the pipe body fixing device (1) and the water supply pipeline to solve the problem of frozen crack of the pipeline network in winter.

[0012] The utility model has the beneficial effects that:

[0013] 1. The small-bore water supply pipeline burst prevention and control signal detection device can detect the tightness of the screw through the torque sensor installed on the device fastening screw, discover the equipment failure in time, process in time, ensure that the equipment is in normal working state, and then accurately realize water supply pressure detection.

[0014] 2. The small-bore water supply pipeline burst prevention and control signal detection device adopts a triangular reinforcing device with a sensor to prevent pipe burst and monitor pressure, and a full-wrapped triangular fixing device is installed at the elbow and tee of the water supply pipeline in the design stage, and the triangular stability is used for supporting and resisting pressure, the carrying capacity of the elbow and tee can be increased, the huge impact force caused by water hammer effect can be dispersed to the whole device, and the pipe burst and leakage problem caused by uneven settlement of the foundation can be avoided.

[0015] 3. The small-diameter water supply pipeline burst prevention and control signal detection device has simple structure, reasonable design and low manufacturing cost, can provide accurate signal source for maintaining water supply network safety, and provides help for maintaining water supply network safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a structural schematic diagram of the signal detection device of the utility model;

[0017] Figure 2 Fig. 2 is a use state diagram of the signal detection device of the utility model;

[0018] Figure 3 Fig. 3 is a working process of the control module judging whether the torque is abnormal through the strain type torque sensor;

[0019] Figure 4 Fig. 4 is a working process of the control module judging whether there is leakage or abnormal pressure through the resistance strain gauge sensor. DETAILED DESCRIPTION

[0020] In order to make the technical concept and advantages of the invention and creation more clear and explicit, the technical scheme of the utility model is further described in detail below in combination with the drawings. It should be understood that the following examples are only used to explain and illustrate the preferred embodiments of the utility model, and should not be regarded as limiting the scope of the utility model. Example 1

[0021] As shown in Figure 1 , Figure 2 The small-diameter water supply pipeline burst prevention and control signal detection device of the utility model comprises a pipe body fixing device 1 and a resistance strain gauge sensor 5, the pipe body fixing device 1 adopts a two-half split structure design, is buckled and installed outside the water supply pipe 6, and is fixed through a screw rod and a fastening nut 2, the inner cavity contour and the outer diameter of the water supply pipe are matched; the resistance strain gauge sensor 5 is arranged between the outer surface of the water supply pipe 6 and the inner side of the pipe body fixing device 1; a strain torque sensor 4 is arranged on the connecting screw rod of the pipe body fixing device 1, and the strain torque sensor 4 is fixed on the connecting screw rod through the fastening nut; signal lines are respectively led out from the strain torque sensor 4 and the resistance strain gauge sensor 5.

[0022] The strain torque sensor signal detection can monitor whether the pipe body fixing device 1 is loose, and the resistance strain gauge sensor 5 signal detection can monitor whether the pressure in the water supply pipe 6 is abnormal. Example 2

[0023] The pipe explosion prevention and control signal detection device for small-diameter water supply pipeline of the embodiment is different from that of embodiment 1 in that the pipe body fixing device 1 is composed of two L-shaped galvanized steel plates which are butted together and sleeved on the elbow of the water supply pipeline 6 to disperse the pressure on the pipeline elbow.

[0024] Moreover, the two ends of the two L-shaped galvanized steel plates of the pipe body fixing device 1 can be respectively provided with reinforcing inclined racks 3 which are fixed to the two ends of the galvanized steel plates on the corresponding side. The fastening nuts 2 (through the screw rods) fasten the two L-shaped galvanized steel plates of the pipe body fixing device 1 together, and the inclined racks 3 are welded to the two ends of the two L-shaped galvanized steel plates, thereby increasing the stability of the device and prolonging the service life of the signal detection device.

[0025] The pipe explosion prevention and control signal detection device for small-diameter water supply pipeline can be provided with a heat preservation layer between the pipe body fixing device 1 and the water supply pipeline, and the heat preservation layer can be made of closed-cell polyethylene foam board and the like to solve the problem of easy freezing and cracking of the pipeline network in winter.

[0026] The torsion sensor installed on the fastening screw of the device can detect the tightness of the screw, so that the equipment failure can be found in time, and the water supply pressure signal detected by the equipment is accurate. That is, only when the working state of the signal detection device is normal, the resistance strain pressure sensor installed on the elbow of the pipeline can truly reflect the pressure of the pipeline.

[0027] The resistance strain sensor 5 is installed on the pipe body, monitors the resistance signal and transmits it to the control module, and monitors the pressure value change (the state in the pipe). The strain torsion sensor 4 is installed on the fastening screw 2, measures the bridge circuit through the strain gauge, monitors the signal, judges whether the torque is abnormal, detects the tightness of the screw, and facilitates the timely discovery of equipment failure and timely maintenance and replacement.

[0028] The signal detection device of the utility model, the output signal is connected to the control module, and the control module can constitute a small-diameter water supply pipeline explosion prevention and control and safety monitoring integrated system. The strain gauge type torsion sensor is installed on the screw of the fixed explosion-proof device, and a measurement bridge is formed on the elastic shaft. When the elastic shaft is slightly deformed due to the torque, the strain gauge will change in resistance, and the bridge will generate a voltage signal proportional to the torque. The aging and loosening of the screw can be monitored. The sensor installed on the small-diameter water supply pipeline through the signal detection device can capture abnormal signals in the pipeline during the operation of the pipeline network. These signals may be caused by pipeline leakage or imminent pipe explosion, and are used to monitor the health status of the pipeline. The reinforcement and safety monitoring integration of the small-diameter water supply pipeline can avoid large-area disturbance to the water supply pipeline network due to repair of the exploded pipe.

[0029] Figure 3The working procedure that the control module judges whether the torque is abnormal through the strain type torque sensor is shown; Figure 4 The working procedure that the control module judges whether there is leakage or abnormal pressure through the resistance strain gauge sensor is shown.

[0030] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification made by those skilled in the art under the guidance of the present application without creative effort should be included in the protection scope of the present application.

Claims

1. A small-bore water supply pipeline burst prevention and control signal detection device, comprising a pipe body fixing device (1) and a resistance strain gauge sensor (5), characterized in that: The pipe body fixing device adopts two half split type structure buckle installation in the water supply pipe, and is fixed through screw rod, fastening nut, its inner cavity contour and water supply pipe outer diameter match; The resistance strain gauge sensor (5) is arranged between the outer surface of the water supply pipe (6) and the inner side of the pipe body fixing device (1); The strain torque sensor (4) is arranged on the connecting screw rod of the pipe body fixing device, and the strain torque sensor (4) is fixed on the connecting screw rod through the fastening nut; The signal lines are drawn out from the strain torque sensor (4) and the resistance strain gauge sensor (5) respectively.

2. The small-bore water supply pipe burst prevention and control signal detection device according to claim 1, characterized in that: The pipe body fixing device (1) adopts two pieces of L-shaped galvanized steel plate butt joint, which is sleeved on the water supply pipe elbow to disperse the pressure of the pipe elbow.

3. The small-bore water supply pipe burst prevention and control signal detection device according to claim 2, characterized in that: The two ends of the two pieces of L-shaped galvanized steel plate connected with the pipe body fixing device (1) are respectively provided with reinforced inclined frames (3), and the two ends of the reinforced inclined frames (3) are respectively fixed with the two ends of the corresponding side galvanized steel plate, so as to increase the stability of the device and prolong the service life of the device.

4. The small-bore water supply pipe burst prevention and control signal detection device according to claim 1, 2 or 3, characterized in that: A heat preservation layer is arranged between the pipe body fixing device (1) and the water supply pipe to solve the problem of easy freezing and cracking of the pipe network in winter due to low temperature.

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