Micro-differential pressure and ultrasonic dual-detection leakage alarm device for water supply network

Abstract

The invention relates to the technical field of water supply network detection, in particular to a water supply network micro differential pressure and ultrasonic dual detection leakage alarm device which comprises a detection box and a water guide pipe, a detection structure is arranged in the detection box, and the detection structure comprises a detection mechanism and an auxiliary mechanism. The detection mechanism comprises a connecting plate, a sliding rod, a permanent magnet, a metal diaphragm and a coil winding, the inner wall of the connecting plate is in sliding connection with the outer wall of the sliding rod, the water supply network micro-differential pressure and ultrasonic dual detection leakage alarm device adopts a dual detection mode of combining micro-differential pressure detection and ultrasonic detection, the leakage detection precision is greatly improved, and the detection efficiency is improved. According to the ultrasonic detection device, small pressure changes can be sensitively captured, ultrasonic detection is carried out by means of an ultrasonic transmitting and receiving device, the water flow turbulence state is accurately recognized by analyzing reflection and scattering signals of ultrasonic waves at leakage positions, the two modes complement each other, and the problem that a single detection mode is prone to being interfered or is insufficient in sensitivity is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of water supply pipe network detection, in particular to a water supply pipe network micro-pressure difference and ultrasonic dual detection leakage alarm device. Background Art

[0002] The water supply network is an important part of urban infrastructure, and its normal operation is directly related to the daily life of residents and industrial production. However, due to reasons such as pipeline aging, improper construction, and external damage, water supply networks often leak, which not only wastes water resources but also may affect the normal operation of the network and the surrounding environment. Therefore, leakage detection and alarm devices are needed.

[0003] Existing leakage detection alarm devices mainly use a single detection method when in use, such as micro-pressure differential detection or ultrasonic detection. However, in actual use, micro-pressure differential detection determines whether there is a leakage by detecting the pressure difference at both ends of the pipeline, but its detection sensitivity for small leaks is low; ultrasonic detection determines the leakage situation by detecting the ultrasonic signal generated by the water flow in the pipeline, but it is easily affected by external interference, resulting in inaccurate detection results, thereby reducing the accuracy of the leakage detection alarm device. Summary of the Invention

[0004] The purpose of the present invention is to provide a water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device, comprising a detection box and a water pipe, wherein a detection structure is provided inside the detection box;

[0006] The detection structure includes a detection mechanism and an auxiliary mechanism;

[0007] The detection mechanism includes a connecting plate, a sliding rod, a permanent magnet, a metal diaphragm, and a coil winding. The inner wall of the connecting plate is slidably connected to the outer wall of the sliding rod. One end of the sliding rod is interconnected with one end of the permanent magnet, and the other end of the sliding rod is interconnected with one side of the metal diaphragm. A mounting plate is fixedly installed on the inner wall of the detection box, and one end of the mounting plate is interconnected with one side of the coil winding.

[0008] Preferably, there are two connecting plates, which are symmetrically distributed on the inner wall of the detection box. A spring is fixedly installed between one end of the coil winding and one side of the connecting plate, so that the permanent magnet can be driven to move quickly and conveniently, thereby better performing the detection work.

[0009] Preferably, the number of the metal diaphragms is two, and the metal diaphragms are symmetrically distributed at both ends of the sliding rod. The number of the mounting plates is two, and the mounting plates are symmetrically distributed on both sides of the coil winding, so that leakage can be detected quickly and conveniently, and thus can be better used.

[0010] Preferably, the auxiliary mechanism includes a fixing plate, a filter, a limiting plate, a fixing bolt, and an ultrasonic transmitter and receiver. The inner wall of the fixing plate is in squeeze contact with both sides of the filter, one side of the filter is interconnected with one end of the limiting plate, the inner wall of the limiting plate is threadedly connected to the outer wall of the fixing bolt, one side of the fixing plate is connected to one side of the ultrasonic transmitter and receiver, a pressure gauge is fixedly installed on the top of the detection box, an alarm light is fixedly installed on one side of the pressure gauge, and a buzzer is fixedly installed on one side of the pressure gauge.

[0011] Preferably, there are two fixed plates, which are symmetrically distributed on the inner walls of the detection box, and two filter screens, which are symmetrically distributed on the inner walls of the two fixed plates, so that impurities in the water can be filtered quickly and conveniently, thereby effectively preventing the detection from being affected.

[0012] Preferably, the number of the limiting plates is four, and the limiting plates are symmetrically distributed on one side of the filter screen. A limiting hole is opened on one side of the fixing plate, and one end of the fixing bolt is threadedly connected to the inner wall of the limiting hole, so that the filter screen can be disassembled and assembled quickly and conveniently, and can be used better.

[0013] Preferably, the ultrasonic transmitter and receiver consists of an ultrasonic transmitter probe and an ultrasonic receiver probe, one side of the fixed plate is connected to one side of the ultrasonic transmitter probe, and one side of the fixed plate is connected to one side of the ultrasonic receiver probe, so that the inside of the water supply pipe can be better inspected and thus better used.

[0014] Preferably, one end of the detection box is connected to one end of the water pipe, the inner wall of the detection box is connected to both ends of the connecting plate, and the inner wall of the detection box is connected to one side of the fixing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This water supply network micro-pressure differential and ultrasonic dual detection leak alarm device utilizes a dual detection method that combines micro-pressure differential and ultrasonic detection through its detection mechanism, significantly improving leak detection accuracy. Micro-pressure differential detection uses a metal diaphragm to sense the pressure difference before and after the leak, driving a permanent magnet in the coil winding to generate an induced current, sensitively capturing minute pressure changes. Ultrasonic detection utilizes an ultrasonic transmitter and receiver to analyze the reflected and scattered signals of ultrasonic waves at the leak site, accurately identifying water flow disturbances. These two complementary methods effectively avoid the susceptibility to interference or insufficient sensitivity of a single detection method, reducing the probability of missed and false alarms.

[0017] 2. This water supply network micro-pressure differential and ultrasonic dual-detection leakage alarm device uses an auxiliary mechanism to connect the filter to the fixed plate via a limit plate and fixing bolts. Operators only need to turn the fixing bolts to quickly complete the filter's disassembly and assembly, facilitating regular cleaning or replacement and preventing impurity accumulation from affecting detection. Furthermore, a spring in the detection mechanism automatically resets the permanent magnet, eliminating the need for additional manual operation. This simplifies the detection process and improves the device's ease of use. The pressure gauge visually displays the network's micro-pressure differential. The alarm light and buzzer simultaneously emit audible and visual alarms when a leak is detected, promptly alerting staff to address the problem. The filter effectively filters impurities in the water, preventing them from interfering with pressure transmission and ultrasonic signals, ensuring the stable operation of the detection components and extending the device's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic cross-sectional view of the present invention;

[0021] Figure 3 It is a partial structural schematic diagram of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention;

[0023] Figure 5 The structure diagram of the auxiliary mechanism of the present invention is as follows Figure 1 ;

[0024] Figure 6 For the present invention Figure 5 A in the figure shows the enlarged structural diagram;

[0025] Figure 7 The structure diagram of the auxiliary mechanism of the present invention is as follows Figure 2 ;

[0026] In the figure: 1. Detection box; 2. Water pipe; 3. Detection mechanism; 301. Connecting plate; 302. Sliding rod; 303. Permanent magnet; 304. Metal diaphragm; 305. Coil winding; 306. Mounting plate; 4. Auxiliary mechanism; 401. Fixing plate; 402. Filter; 403. Limiting plate; 404. Fixing bolt; 405. Ultrasonic transmitter and receiver; 406. Pressure gauge; 407. Warning light; 408. Buzzer. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] Example 1:

[0030] See also Figure 1-Figure 7 , the present invention provides a technical solution: a water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device, comprising a detection box 1 and a water pipe 2, wherein a detection structure is provided inside the detection box 1;

[0031] The detection structure includes a detection mechanism 3 and an auxiliary mechanism 4;

[0032] The detection mechanism 3 includes a connecting plate 301, a sliding rod 302, a permanent magnet 303, a metal diaphragm 304, and a coil winding 305. The inner wall of the connecting plate 301 is slidably connected to the outer wall of the sliding rod 302. One end of the sliding rod 302 is connected to one end of the permanent magnet 303, and the other end of the sliding rod 302 is connected to one side of the metal diaphragm 304. A mounting plate 306 is fixedly installed on the inner wall of the detection box 1, and one end of the mounting plate 306 is connected to one side of the coil winding 305.

[0033] In this embodiment, there are two connecting plates 301, which are symmetrically distributed on the inner wall of the detection box 1. A spring is fixedly installed between one end of the coil winding 305 and one side of the connecting plate 301, so that the permanent magnet 303 can be moved quickly and conveniently, thereby enabling better detection work;

[0034] Furthermore, there are two metal diaphragms 304, which are symmetrically distributed at both ends of the sliding rod 302, and two mounting plates 306, which are symmetrically distributed at both sides of the coil winding 305, so that leakage can be detected quickly and conveniently, thereby enabling better use.

[0035] Furthermore, one end of the detection box 1 is connected to one end of the water pipe 2 , the inner wall of the detection box 1 is connected to both ends of the connecting plate 301 , and the inner wall of the detection box 1 is connected to one side of the fixing plate 401 .

[0036] When inspection work is required, the operator connects one end of the water pipe 2 to one end of the water supply pipe, so that water can enter the interior of the inspection box 1. When there is a leak in the pipe network, a small pressure difference will be generated before and after the leak point, causing the two metal diaphragms 304 to deform to varying degrees, driving the sliding rod 302 and the permanent magnet 303 to move. A coil winding 305 is set outside the permanent magnet 303 inside the inspection box 1. When the permanent magnet 303 moves with the sliding rod 302, an induced current will be generated in the coil winding 305. The magnitude of the induced current is related to the displacement of the permanent magnet 303, that is, it corresponds to the micro-pressure difference in the pipe network. The output end of the coil winding 305 is connected to a pressure gauge 406. The dial of the pressure gauge 406 is marked with a pressure difference scale. The micro-pressure difference in the pipe network can be intuitively displayed through the deflection of the pointer, and the permanent magnet 303 can be reset by a spring, so that the water supply pipe network can be better inspected, effectively improving the accuracy.

[0037] Example 2:

[0038] On the basis of Example 1, the auxiliary mechanism 4 includes a fixing plate 401, a filter 402, a limiting plate 403, a fixing bolt 404, and an ultrasonic transmitter and receiver 405. The inner wall of the fixing plate 401 is in squeeze contact with both sides of the filter 402, one side of the filter 402 is interconnected with one end of the limiting plate 403, the inner wall of the limiting plate 403 is threadedly connected to the outer wall of the fixing bolt 404, one side of the fixing plate 401 is interconnected with one side of the ultrasonic transmitter and receiver 405, and a pressure gauge 406 is fixedly installed on the top of the detection box 1, an alarm light 407 is fixedly installed on one side of the pressure gauge 406, and a buzzer 408 is fixedly installed on one side of the pressure gauge 406;

[0039] In this embodiment, the number of fixed plates 401 is two, and the fixed plates 401 are symmetrically distributed on the inner wall of the detection box 1. The number of filter screens 402 is two, and the filter screens 402 are symmetrically distributed on the inner wall of the two fixed plates 401, so that the impurities in the water can be quickly and conveniently filtered, and the influence on the detection can be effectively prevented.

[0040] Further, the number of limiting plates 403 is four, and the limiting plates 403 are symmetrically distributed on one side of the filter screen 402. The fixed plate 401 is provided with a limiting hole on one side, and one end of the fixed bolt 404 is threadedly connected with the inner wall of the limiting hole, so that the filter screen 402 can be quickly and conveniently disassembled, and better use can be achieved.

[0041] Further, the ultrasonic emitter receiver 405 is composed of an ultrasonic emission probe and an ultrasonic receiving probe. One side of one fixed plate 401 is connected with one side of the ultrasonic emission probe, and one side of one fixed plate 401 is connected with one side of the ultrasonic receiving probe, so that the inside of the water supply pipe can be better detected, and better use can be achieved.

[0042] When detection is needed, the operator connects one end of the water guide pipe 2 with one end of the water supply pipe, so that water can enter the inside of the detection box 1. The ultrasonic emission probe and the ultrasonic receiving probe in the ultrasonic emitter receiver 405 are started to work. The ultrasonic emission probe can emit ultrasonic waves of a fixed frequency into the pipeline. When the ultrasonic waves meet a leakage point, reflection and scattering will occur. The ultrasonic receiving probe is responsible for receiving the reflected and scattered ultrasonic wave signals. Under normal conditions of the pipe network, the water flow state is stable, and the propagation speed, amplitude and other parameters of the ultrasonic wave signals remain stable. When there is a leakage in the pipe body, the water flow at the leakage point will be turbulent and vortex, thereby changing the propagation characteristics of the ultrasonic wave signals. After the ultrasonic receiving probe captures these abnormal signals, it converts them into electrical signals and transmits them to the buzzer 408 and the warning light 407, so that the buzzer 408 can sound an alarm, and the warning light 407 can emit a light alarm to double alert the staff that there may be a leakage in the pipe network, so that the staff can timely investigate and repair, thereby better use can be achieved. In order to ensure the accuracy of the detection, the impurities in the water can be filtered through the filter screen 402, so that the impurities can be effectively prevented from entering the inside of the detection box 1, and the influence on the pressure transmission of the water flow can be avoided. When the filter screen 402 needs to be disassembled, the fixed bolt 404 is rotated to move in the inner wall of the limiting plate 403. The fixed bolt 404 can be pulled out from one side of the fixed plate 401 by moving, so that the limiting and fixing of the filter screen 402 can be cancelled, and the filter screen 402 can be disassembled. When installation is needed, the above steps are repeated in reverse to install, so that the operator can use it more conveniently.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device, comprising a detection box (1) and a water pipe (2), characterized in that: The detection box (1) is provided with a detection structure inside; The detection structure includes a detection mechanism (3) and an auxiliary mechanism (4); The detection mechanism (3) comprises a connecting plate (301), a sliding rod (302), a permanent magnet (303), a metal diaphragm (304), and a coil winding (305); the inner wall of the connecting plate (301) is slidably connected to the outer wall of the sliding rod (302); one end of the sliding rod (302) is interconnected with one end of the permanent magnet (303); the other end of the sliding rod (302) is interconnected with one side of the metal diaphragm (304); a mounting plate (306) is fixedly mounted on the inner wall of the detection box (1); one end of the mounting plate (306) is interconnected with one side of the coil winding (305).

2. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 1, characterized in that: There are two connecting plates (301), which are symmetrically distributed on the inner wall of the detection box (1). A spring is fixedly installed between one end of the coil winding (305) and one side of the connecting plate (301).

3. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 1, characterized in that: There are two metal diaphragms (304), which are symmetrically distributed at both ends of the sliding rod (302); there are two mounting plates (306), which are symmetrically distributed at both sides of the coil winding (305).

4. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 1, characterized in that: The auxiliary mechanism (4) comprises a fixing plate (401), a filter (402), a limiting plate (403), a fixing bolt (404), and an ultrasonic transmitter and receiver (405). The inner wall of the fixing plate (401) is in extrusion contact with both sides of the filter (402). One side of the filter (402) is connected to one end of the limiting plate (403). The inner wall of the limiting plate (403) is threadedly connected to the outer wall of the fixing bolt (404). One side of the fixing plate (401) is connected to one side of the ultrasonic transmitter and receiver (405). A pressure gauge (406) is fixedly installed on the top of the detection box (1). An alarm light (407) is fixedly installed on one side of the pressure gauge (406). A buzzer (408) is fixedly installed on one side of the pressure gauge (406).

5. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 4, characterized in that: There are two fixed plates (401) and the fixed plates (401) are symmetrically distributed on the inner walls of the detection box (1). There are two filter screens (402) and the filter screens (402) are symmetrically distributed on the inner walls of the two fixed plates (401).

6. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 4, characterized in that: There are four limit plates (403) symmetrically distributed on one side of the filter screen (402). A limit hole is provided on one side of the fixing plate (401), and one end of the fixing bolt (404) is threadedly connected to the inner wall of the limit hole.

7. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 4, characterized in that: The ultrasonic transmitter and receiver (405) is composed of an ultrasonic transmitter probe and an ultrasonic receiver probe. One side of the fixing plate (401) is connected to one side of the ultrasonic transmitter probe, and one side of the fixing plate (401) is connected to one side of the ultrasonic receiver probe.

8. The water supply network micro-pressure difference and ultrasonic dual detection leakage alarm device according to claim 1, characterized in that: One end of the detection box (1) is connected to one end of the water pipe (2), the inner wall of the detection box (1) and the two ends of the connecting plate (301) are connected to each other, and the inner wall of the detection box (1) and one side of the fixing plate (401) are connected to each other.

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