Tap water pipeline leakage measuring instrument
The RHSA-20 hydrophone sensor floating in the tap water pipe detects the leakage point, and solves the positioning error problem of detection equipment in noisy environments and complex pipelines in the prior art, and realizes efficient detection of non-metallic pipelines.
Patent Information
- Application Number
- CN202422706712.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing water supply pipeline detection equipment is difficult to accurately locate leakage points in noisy environments and complex pipeline structures, and traditional methods are limited to effectively detect leakage in non-metallic pipelines.
A tap water pipe leakage measuring instrument was designed, using the RHSA-20 spherical standard hydrophone as the sensor, and floating it in the pipe by a buoyancy device, combining a sealing structure and a protective cover to reduce friction and protect the sensor, using special buoyancy materials to provide buoyancy and reduce drag.
It realizes efficient and accurate detection of leakage points in water supply pipelines, reduces the impact of environmental noise interference and pipeline structure complexity, and is suitable for leakage detection of various pipeline materials.
Smart Images
Figure CN223282923U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline detection equipment, in particular to a leakage measuring instrument that can be used for tap water pipelines. Background Art
[0002] Water supply pipes are a vital component of urban water supply systems. They are typically constructed from materials such as iron, steel, cement, and fiberglass. However, these pipes are buried underground for extended periods of time. Over time, these materials can deteriorate due to aging, corrosion, wear, and expansion if not properly maintained. If leaking pipes are not promptly discovered and repaired, precious water resources are wasted, endangering nearby roads, buildings, and facilities. In severe cases, this can lead to water pollution, significant economic losses, and adverse social impacts. Therefore, conducting water supply pipe leak detection to ensure the safe, stable, and healthy operation of these pipes is of practical and far-reaching significance.
[0003] In the early days, commonly used leak detection equipment included acoustic leak wands, acoustic leak cakes, and electronic leak detectors. However, these detection solutions also had limitations. For example, the traditional handheld listening rod technique detected leaks at exposed points on the pipe. Its effectiveness was affected by background noise, pipe pressure, and the experience of the leak detector. Deep buried pipes made it difficult to detect leaks. The electronically amplified audiometer (pipeline leak detector) compared sound intensity along a suspected leaking pipe using a set of steps. However, its effectiveness was limited in noisy environments and busy urban areas, and was also affected by soil properties. The correlation analysis method used the delay in the leak sound to determine the leak location. While relatively accurate, it often lacked effectiveness for non-metallic pipes. Furthermore, errors in the pipe network topology, the presence of branch pipes, and the calculation of sound velocity can all lead to positioning errors. The tracer gas detection method detected leaks by measuring the concentration of a tracer gas along the pipe. While highly sensitive, its use required critical conditions and required knowledge of the water flow direction. Branch pipes could also cause gas leaks and detection failures. Ground radar leak detection utilizes electromagnetic principles to detect underground pipelines, locating leaks by emitting electromagnetic cracks and performing reverse acquisition. This method is suitable for detecting large-diameter or non-metallic pipelines. However, accurate identification of the initial leak point is difficult, image analysis is challenging, and data processing is slow. The instantaneous flow detection method, which locates leaks by identifying pipeline pressure signals, artificially generates instantaneous flow rate fluctuations. Comparing the calculated instantaneous pressure fluctuations with actual pressure fluctuations at different leak locations and leak regions can also be subject to noise interference, resulting in erroneous inverse problem analysis results and low model reliability.
[0004] Therefore, it is necessary to design a device that can be used for detection in water supply pipelines to directly perform water leakage detection work in the pipelines. Utility Model Content
[0005] The utility model provides a leakage measuring instrument for a tap water pipeline in order to carry out water supply pipeline leakage detection.
[0006] The utility model adopts the following technical solution: a water pipe leakage measuring instrument, comprising:
[0007] A measurement subject, comprising:
[0008] sensor;
[0009] A sensor protection cover, which is sleeved on the outside of the sensor;
[0010] a buoyancy device, wherein the buoyancy device is integrally connected to the sensor protection cover;
[0011] The sealing structure is arranged at both ends of the measuring body and is used to seal both ends of the sensor protection cover.
[0012] In some embodiments, the sealing structure comprises:
[0013] Two sealing plugs, one of which is arranged at the outer end of the sensor protection cover, and the other is arranged at the outer end of the buoyancy device.
[0014] In some embodiments, protective covers are provided at both ends of the measuring body.
[0015] In some embodiments, the sensor protective cover and the buoyancy device are circular structures, one end of the protective cover is circular and connected to the ends of the sensor protective cover and the buoyancy device respectively, and the other end of the protective cover is conical to reduce water resistance.
[0016] In some embodiments, the buoyancy device is a buoyancy material having a density of 0.38±0.02 g / cm^3, a water absorption rate of ≤1% in 24 hours, and a compressive strength of ≥10 MPa.
[0017] In some embodiments, a plurality of holes are provided on the buoyancy device.
[0018] In some embodiments, the sensor is a RHSA-20 spherical standard hydrophone.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] The water pipe leakage measuring instrument needs to float in the water supply pipe due to the special measuring method of its sensor and to reduce friction. The utility model adds special buoyancy material, and the buoyancy material needs to be embedded in the measuring instrument. The buoyancy material needs to have a certain strength and low density.
[0021] The protective covers at both ends of the utility model use buoyancy materials, which are used not only to protect the sensor, but also to reduce the overall density, provide buoyancy for the utility model, so as to achieve the purpose of making the instrument float in the water for measurement, and reduce the friction during movement, thereby reducing the creeping power of the entire instrument string. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the structure of the utility model;
[0023] In the figure, 1-protective cover, 2-sealing plug, 3-sensor protection cover, 4-sensor, 5-hollow space, 6-buoyancy device. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0025] like Figure 1 As shown, a water pipe leakage measuring instrument can be used, comprising:
[0026] A measurement subject, comprising:
[0027] Sensor 4: Sensor 4 is a RHSA-20 spherical standard hydrophone;
[0028] A sensor protection cover 3 is placed on the outside of the sensor 4;
[0029] A buoyancy device 6, wherein the buoyancy device 6 is integrally connected to the sensor protection cover 3;
[0030] The sealing structure is provided at both ends of the measuring body and is used to seal both ends of the sensor protection cover 3 .
[0031] The sensor 4 is a special precision device for detecting leaks in water pipes. The sensor needs to float in the water pipe for measurement. If it is measured against the pipe wall, the accuracy of the final measurement data will be affected. Therefore, a buoyancy device 6 must be used to make it float in the water for measurement.
[0032] A hollow space 5 is provided in the middle of the sensor protection cover 3 for installing a sensor 6. The hollow space is cylindrical and can just accommodate the sensor 6.
[0033] The sealing structure includes:
[0034] There are two sealing plugs 2 , one of which is arranged at the outer end of the sensor protection cover 3 , and the other sealing plug 2 is arranged at the outer end of the buoyancy device 6 .
[0035] A sealing ring is used to seal the sealing plug 2, the sensor protection cover 3 and the buoyancy device 6 to ensure that no water enters the pressurized water pipe.
[0036] Protective covers 1 are provided at both ends of the measuring body.
[0037] The sensor protection cover 3 and the buoyancy device 6 are circular structures. One end of the protection cover 1 is circular and connected to the ends of the sensor protection cover 3 and the buoyancy device 6 respectively. The other end of the protection cover 1 is conical to reduce water resistance.
[0038] The protective cover 1 is used to protect the connected hose from being scratched by sharp objects in the water pipe. The protective cover is made of buoyant material and is distributed at the head and tail of the instrument to reduce the density at both ends of the instrument and reduce the overall weight of the instrument. The front end of the protective cover is designed to be streamlined to match its low density characteristics to reduce its resistance in water.
[0039] The buoyancy device 6 is made of a buoyancy material having a density of 0.38±0.02 g / cm^3, a water absorption rate of ≤1% within 24 hours, and a compressive strength of ≥10 MPa. A plurality of holes are provided on the buoyancy device 6.
[0040] In this embodiment, SBM038 produced by Qingdao Marine Chemical Industry Research Institute is selected. The buoyancy material is a solid buoyancy material, which is a solid compound obtained by physical and chemical reaction of inorganic lightweight filling material filled into organic polymer material.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A water pipe leakage measuring instrument, characterized in that: include: A measurement subject, comprising: Sensors (4); A sensor protection cover (3), wherein the sensor protection cover (3) is sleeved on the outside of the sensor (4); A buoyancy device (6), wherein the buoyancy device (6) is integrally connected to the sensor protection cover (3); A sealing structure is provided at both ends of the measuring body and is used to seal both ends of the sensor protection cover (3).
2. The water pipe leakage measuring instrument according to claim 1, characterized in that: The sealing structure comprises: Two sealing plugs (2), one of which is arranged at the outer end of the sensor protection cover (3), and the other of which is arranged at the outer end of the buoyancy device (6).
3. The water pipe leakage measuring instrument according to claim 1, characterized in that: Protective covers (1) are provided at both ends of the measuring body.
4. The water pipe leakage measuring instrument according to claim 3, characterized in that: The sensor protection cover (3) and the buoyancy device (6) are circular structures. One end of the protection cover (1) is circular and connected to the ends of the sensor protection cover (3) and the buoyancy device (6), respectively. The other end of the protection cover (1) is conical and is used to reduce water resistance.
5. The water pipe leakage measuring instrument according to claim 1, characterized in that: The buoyancy device (6) is a buoyancy material with a density of 0.38±0.02 g / cm^3, a water absorption rate of ≤1% in 24 hours, and a compression strength of ≥10Mpa.
6. The water pipe leakage measuring instrument according to claim 1, characterized in that: A plurality of holes are provided on the buoyancy device (6).
7. The water pipe leakage measuring instrument according to claim 1, characterized in that: The sensor (4) is a RHSA-20 spherical standard hydrophone.