CN207049625U - Ball is positioned for public supply mains leak detection - Google Patents
Ball is positioned for public supply mains leak detection Download PDFInfo
- Publication number
- CN207049625U CN207049625U CN201720705641.6U CN201720705641U CN207049625U CN 207049625 U CN207049625 U CN 207049625U CN 201720705641 U CN201720705641 U CN 201720705641U CN 207049625 U CN207049625 U CN 207049625U
- Authority
- CN
- China
- Prior art keywords
- module
- sealing structure
- ball
- detection
- circuit module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 79
- 238000007789 sealing Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000005484 gravity Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 239000004814 polyurethane Substances 0.000 claims abstract description 5
- 229920002635 polyurethane Polymers 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 25
- 238000013461 design Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 16
- 230000003750 conditioning effect Effects 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000012795 verification Methods 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses one kind to be used for public supply mains leak detection positioning ball.Detection positioning ball includes sealing structure, internal module support, spherical containment vessel, balancing weight and the part of control unit five.Sealing structure selects aluminum alloy materials, and internal module support is used to fix control unit and balancing weight, keeps steadily of centre of gravity in the device course of work, and spherical containment vessel uses polyurethane material, is coated on outside sealing structure, increase and the frictional force of inner-walls of duct；Control unit realizes autonomous positioning for gathering, handling the leakage characteristic signal in pipeline；The utility model passes through reasonable counterweight, ensures that its gravity in water supply line is just slightly larger than buoyancy, and is much smaller than rotary inertia along other two dimensions along the rotary inertia of certain dimension, can be rotated in the duct around single shaft, be easy to later stage positioning analysis.The utility model can realize the detection of public supply mains minute leakage, and guarantee is provided for detection ball long-term stable operation in pipeline.
Description
Technical Field
The utility model relates to a be used for city water supply network leak testing location ball, specifically speaking relates to the whole counter weight design of interconnect relation and detection ball between the mechanical structure, between machinery and the circuit module, belongs to the category of mechanical structure design.
Background
According to statistics, the average leakage rate of urban water supply networks in China exceeds 15%, and the waste of water resources is serious. If the leakage rate is reduced by 1 percentage point, the water can be saved by at least 5 billion cubic meters, which is equivalent to more than 30 water in west lakes. Because urban water supply network has the wide range of distribution, pipeline apart from long, the incomplete scheduling problem of pipeline intricacy complex information, still mainly uses artifical listening to leak to mainly carry out the leak point location at present, hardly carries out accurate space orientation detection to the leak point with the mode of low cost.
The mechanical structure design has extremely important significance for realizing the function of the detection ball. Firstly, the detection ball works in water, so that the detection ball has high requirement on the whole sealing property; secondly, the influence of collision and oscillation is reduced in the working process of the detection ball in the pipeline, and the design of a protective shell is highly required; thirdly, the detection ball is ensured to roll around a single shaft along the lower wall of the pipeline, and high requirements are imposed on the design of the balance weight and the design of the protective shell; finally, the reliability of the detection ball in long-term operation in the pipeline is ensured, and higher requirements are put forward on the integral design of a mechanical structure.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model discloses an aim at provides a leak testing location ball for urban water supply network to the operating characteristic of urban water supply network leak testing location ball.
The purpose of the utility model is realized through the following technical scheme:
a mechanical structure device of the leakage detection positioning ball for the urban water supply network comprises a sealing structure, an internal module bracket, a spherical protective shell, a balancing weight and a control unit;
whereinThe sealing structure and the internal module support are made of aluminum alloy materials and are used for fixing and detecting a circuit module inside the positioning ball, the circuit module comprises a USB communication and charging dual-function multiplexing module, a switch module, a main control circuit module, a signal conditioning circuit module, a power supply module and a hydrophone module, the USB communication and charging dual-function multiplexing module, the switch module and the hydrophone module are used for interacting with the external environment, holes are formed in the sealing structure for fixing, the main control circuit module, the signal conditioning circuit module and the power supply module are used for detecting the work inside the ball, and the inside of the sealing structure is fixed through the internal module support; the spherical protective shell is made of polyurethane materials and used for coating the sealing structure, and openings are formed in the corresponding positions of the spherical protective shell; the control unit comprises a switch module, a main control circuit module and a signal conditioning circuit module and is used for collecting and processing leakage characteristic signals in the pipeline and realizing autonomous positioning; the balancing weight is fixed on the inner wall of the sealing structure and used for ensuring that the gravity is slightly larger than the buoyancy when the detection positioning ball works in the pipeline and the gravity is vertically upwardYThe moment of inertia of the shaft is much smaller than that of the other two shafts, and the friction force provided by the spherical protective shell ensures that the spherical protective shell winds around the pipelineYThe shaft rolls along a single shaft and can be in a gravity balance state in the vertical ascending pipeline to ascend along with water flow so as to realize positioning.
The sealing structure consists of an upper part and a lower part, and is screwed by threads and sealed by an O-shaped ring; two holes are symmetrically formed in the left and right sides of the upper half part of the sealing structure, and are respectively used for mounting a USB communication and charging dual-function multiplexing module and a switch module, a plug is mounted on the USB communication and charging dual-function multiplexing module for sealing, the switch module is provided with threads, and the corresponding position of the sealing structure is provided with the threads and is sealed; in the lower half of the sealing structure andYthreads are arranged at the cross point of the shaft according to the structural opening of the hydrophone module and are sealed; for the spherical shell internal circuit module, 8 central rotationally symmetrical M3 threaded holes are reserved on the concave table surface of the upper half part of the sealing structure and are connected with the sealing structure by an internal module bracket, the main control circuit module and the signal conditioning circuit module are connected with a copper column through a reserved through hole on a PCB (printed circuit board), and the power supply module is connected with the sealing structure by an internal moduleThe block support is connected with the upper half sealing structure, all the modules finally form a whole, and the whole sealing performance is ensured.
The counterweight block is fixed on the inner wall of the sealing structure, the number can be increased or decreased, the position can be adjusted, the design of the counterweight block considers the rotational inertia of the detection positioning ball on three axes, the detection positioning ball is put in a three-dimensional space for analysis, and any reference point in the three-dimensional space is analyzedOTaking the reference point as the origin to make a rectangular space coordinate systemOXYZDetecting the inertia tensor of the positioning ballIRepresented by a symmetric matrix:
wherein,I xx 、I yy 、I zz to be wound aroundX、Y、ZThe rotational inertia of the shaft;
balancing weight by the balancing weight block and calculating verification to enable the detection positioning ball to windYThe moment of inertia of the shaft is the smallest and much smaller than the moment of inertia around other two shafts, and the detection ball is taken to wind aroundYThe moment of inertia of the shaft is minimal and less than one quarter of the other two shafts.
The utility model has the advantages that:
1. the mechanical structure design that seal structure design and protective housing design separation have been proposed, and seal structure lies in assembling into a whole with all circuit module, guarantees its leakproofness in aqueous, and the protective housing lies in the shock attenuation and the buffering of detection ball during operation and provides the required frictional force of detection ball roll.
2. The design of the balancing weight of the positioning ball for detecting the leakage of the pipeline is provided, so that the gravity borne by the whole detection ball is slightly larger than the buoyancy, and the detection ball is wound aroundYThe rotational inertia of the shaft is far smaller than that of the shaft around other two shafts, so that the detection ball can roll along the lower wall along a water flow single shaft in the pipeline, and the reliability of the detection ball in the long-term working process is ensured.
Drawings
FIG. 1 is a schematic view of an overall structure of a leakage detection positioning ball for a municipal water supply network;
FIG. 2 is a schematic view of an internal module support for a leak testing and positioning ball for a municipal water supply network;
FIG. 3 is a schematic view of a protective case for a leak detection positioning ball of a municipal water supply network;
FIG. 4 is a schematic circuit structure diagram of a leakage detection positioning ball for a city water supply network;
FIG. 5 is a schematic view of a weight of the leak detection positioning ball.
Detailed Description
Referring to fig. 1, the mechanical structure device of the leakage detection positioning ball is composed of a sealing structure 1, an internal module bracket 2, a spherical protective shell 3, a balancing weight 4 and a control unit; in fig. 1, the spherical protective shell 3 is separated for the sake of illustration and is located at the lower part of the sealing structure 1.
The sealing structure 1 and the internal module support 2 are made of aluminum alloy materials, have the characteristics of compression resistance, water resistance and corrosion resistance, and are used for connecting various circuit modules inside the detection ball, the circuit modules of the detection ball comprise a USB communication and charging dual-function multiplexing module 5, a switch module 6, a main control circuit module 7, a signal conditioning circuit module 8, a power supply module 9 and a hydrophone module 10, the sealing structure 1 and the internal module support 2 are combined together, so that various circuit modules form a sealed whole to realize the function of the detection ball, the USB communication and charging dual-function multiplexing module 5, the switch module 6 and the hydrophone module 10 are modules for detecting interaction of the positioning ball and the external environment, holes need to be formed in the sealing structure 1 for fixation, and the main control circuit module 7 and the signal conditioning circuit module are made of aluminum alloy materials, and are used for connecting various circuit modules8 and the power supply module 9 are modules working in the detection positioning ball, and are fixed in the sealing structure 1 through the internal module bracket 2; the spherical protective shell 3 is made of a polyurethane material, is soft, compact and rough in surface, is used for coating the sealing structure 1, reduces the impact and vibration influence of the detection ball during working in a pipeline, increases the friction between the detection ball and the inner wall of the pipeline, has the functions of buffering and shock absorption and ensures the rolling operation of the detection ball in the pipeline, and is provided with a hole at the position corresponding to the spherical protective shell 3 to ensure the normal interaction of the detection ball and the external environment; the control unit consists of a switch module 6, a main control circuit module 7 and a signal conditioning circuit module 8 and is used for collecting and processing leakage characteristic signals in the pipeline and realizing autonomous positioning; the detection positioning ball integral balance weight is designed to ensure that the gravity is slightly larger than the buoyancy when the detection positioning ball works in the pipeline and the edgeYThe moment of inertia of the shaft is much less than the moment of inertia along the other two axes, and the friction provided by the spherical protective shell 3 ensures that it rolls around a single axis in the pipeline, so as to realize a positioning algorithm.
The mechanical structure is assembled and works in the following specific steps:
step 1: screwing the switch module 6 to the upper half sealing structure and sealing by using an O-shaped ring, fixing the USB communication and charging dual-function multiplexing module 5 to the upper half sealing structure by using a screw 13, and sealing the interface by using a plug 11 and the O-shaped ring;
step 2: connecting the main control circuit module 7, the signal conditioning circuit module 8 and the power supply module 9 to the upper half sealing structure through the internal module bracket 2, the copper column 12 and the screw 13;
step 3: screwing the hydrophone module 10 to the lower half sealing structure and sealing the lower half sealing structure by using an O-shaped ring, and placing the balancing weight 4 at a corresponding position of the sealing structure 1;
step 4: the upper and lower part sealing structures are screwed together through threads and sealed by an O-shaped ring, and the spherical protective shell 3 is coated on the sealing structure 1, so that the assembly of the detection ball is completed;
step 5: pressing a switch key of a switch module 6 of the detection ball, putting the detection ball into the urban water supply network to enable the detection ball to roll along with water flow, detecting information inside a pipeline by the detection ball in the rolling process, and storing the information into an SD card of a main control circuit module 7;
step 6: and (3) recovering the detection ball at the end point of the pipeline, wiping water on the outer surface of the detection ball, unscrewing the metal plug 11, and reading data from the SD card for further analysis through the USB communication and charging dual-function multiplexing module 5 in a wired mode.
According to the method for designing the integral counterweight of the leakage detection positioning ball, in the process of detecting the counterweight of the ball, the rotational inertia on three axes is considered, the detection ball is placed in a three-dimensional space for analysis, and any reference point in the three-dimensional space is analyzedOTaking the reference point as the origin to make a rectangular space coordinate systemOXYZThen the inertia tensor of the ball is detectedIRepresented by a symmetric matrix:
wherein,I xx 、I yy 、I zz to be wound aroundX、Y、ZThe moment of inertia of the shaft.
The moment of inertia is used for describing the resistance of an object to the change of the rotary motion of the object, the moment of inertia of the object to the rotary motion of the object is equivalent to the mass in linear dynamics, the larger the moment of inertia is, the less the object is easy to rotate, and the detection ball is designed to surround by a counterweight and verified by SOLIDWORKS software calculationYThe moment of inertia of the axis is minimal and much less than the moment of inertia of the other two axes, thus detecting the ball windingYThe shaft rolling is less resistant to changes in rotation, i.e. more easily woundYThe shaft rotates, andYthe moment of inertia of axle is big with the moment of inertia's of other diaxons disparity is big more, then the spheroid rolls around Y axle stability more easily when rolling in the pipeline, the utility model discloses get during the design and detect the ball aroundYThe moment of inertia of a shaft being minimal and less than four times that of the other two shaftsOne, so that the detection ball will follow the water flow along the lower wall in the pipelineYSingle axis rolling of the shaft.
Referring to fig. 1, the detection ball is long-term work in aqueous, consequently has very high requirement to the holistic leakproofness of detection ball, crushing resistance and corrosion resistance, based on above consideration, the utility model discloses an aluminum alloy material is as the material that detects ball seal structure design. The detection ball sealing structure consists of an upper part and a lower part, wherein the upper part and the lower part are screwed together by threads and sealed by an O-shaped ring. Two through holes with threads drilled in the upper half sealing structure are respectively used for installing the USB communication and charging dual-function multiplexing module 5 and the metal switch 6, the USB communication and charging dual-function multiplexing module 5 is screwed by the metal plug 11 and sealed by an O-shaped ring, and the metal switch 6 is screwed by threads and sealed by the O-shaped ring. The lower half seal structure is drilled with a threaded through hole for mounting the hydrophone module 10 and is sealed with an O-ring.
Referring to fig. 1 and 2, a schematic view of the overall structure of the leak detection positioning ball and a schematic view of the internal module support are shown. The inner module support 2 is used for connecting each circuit module in the detection ball to the sealing structure 1, four centrosymmetric through holes in fig. 2 correspond to eight centrosymmetric M3 threaded holes at the concave station of the upper half sealing structure, and are used for fixing the connecting piece on the sealing structure 1 through the copper columns 12 and the screws 13, the positions of three bosses in fig. 2 correspond to reserved through holes of the PCB of the main control circuit module 7, and are used for fixing the PCB of the main control circuit module 7 to the sealing structure 1 through the copper columns 12, the PCB of the signal conditioning circuit module 8 is connected with the PCB of the main control circuit module 7 through the reserved through holes, the copper columns 12 and the screws 13, and the power supply module 9 is directly connected with the circuit module PCB by connecting wires.
Referring to fig. 1 and 3, the overall structure of the leak detection positioning ball is schematically illustrated, and the protective shell is schematically illustrated. The design of the protective shell is particularly critical because the detection ball works in the pipeline for a long time and is inevitably collided with the pipeline, and the surface of the protective shell is rough enough to provide the friction force for the detection ball to roll along the lower wall of the pipeline. The utility model discloses in, the material of protective housing adopts the polyurethane material, matter soft, closely knit and surface roughness, and matter soft and closely knit lie in reducing the collision and the shock influence that detect the ball during operation in the pipeline, play buffering and absorbing function, and surface roughness lies in providing the frictional force that detects the ball when the pipe wall moves, guarantees its roll operation.
Referring to fig. 1 and 4, the overall structure and circuit structure of the leak detection positioning ball are shown. The control unit is composed of a switch module 6, a main control circuit module 7 and a signal conditioning circuit module 8, and is used for collecting and processing leakage characteristic signals in a pipeline and realizing autonomous positioning, the switch module 6 is used for starting signals for the main control circuit module 7 to start the work of a detection ball, the main control circuit module 7 integrates an inertial navigation module, a power supply detection module, a wireless communication module, an SD card storage module and a wired communication module and is used for controlling the collection and processing of the leakage characteristic signals, and the signal conditioning circuit module 8 is used for conditioning the signals collected by the hydrophone module 10 to be processed by the main control circuit module 7.
Referring to fig. 1 and 5, the overall structure of the leakage detection positioning ball and the counterweight block are schematically illustrated. The detection ball counter weight mainly has two purposes, firstly, the gravity borne by the detection ball is ensured to be slightly larger than the buoyancy, so that the detection ball moves forwards along the lower wall of the pipeline and can ascend along with water flow in a vertical ascending pipeline in a state similar to a zero gravity state; secondly, ensure to detect the ball edgeYThe moment of inertia of the shaft is much less than that of the other two shafts, so that the detection ball can wind aroundYThe shaft rotates on a single axis. The utility model discloses get when designing and detect ball aroundYThe moment of inertia of the shaft is minimum and less than one fourth of the moment of inertia of the shaft around the other two shafts, so that the detection ball can wind along the lower wall along with the water flow in the pipelineYSingle axis rolling of the shaft.
The utility model discloses to the operating characteristic of city water supply network leak testing locating ball, provide one kind and connect each module part and finally form the holistic mechanical structure design method of sealed sphere. The mechanical structure design method ensures the whole sealing performance of the detection ball, ensures the shock absorption and the buffering of the detection ball, ensures that the detection ball rolls around a single shaft along the lower wall all the time when running in a pipeline, and ensures the reliability of the detection ball in the long-term working process.
Claims (3)
1. The utility model provides a be used for urban water supply pipe network leak testing locating ball which characterized in that: the mechanical structure device of the leakage detection positioning ball comprises a sealing structure (1), an internal module bracket (2), a spherical protective shell (3), a balancing weight (4) and a control unit;
the sealing structure (1) and the internal module support (2) are made of aluminum alloy materials and are used for fixing and detecting a circuit module inside the positioning ball, and the circuit module comprises a USB communication and charging dual-function multiplexing module (5), a switch module (6), a main control circuit module (7) and a signal conditioning circuit module(8) The intelligent detection ball comprises a power supply module (9) and a hydrophone module (10), wherein the USB communication and charging dual-function multiplexing module (5), a switch module (6) and the hydrophone module (10) are used for interacting with an external environment, holes are formed in a sealing structure (1) for fixing, a main control circuit module (7), a signal conditioning circuit module (8) and the power supply module (9) are used for detecting the work inside the ball, and the inside of the sealing structure (1) is fixed through an inner module support (2); the spherical protective shell (3) is made of polyurethane materials and used for coating the sealing structure (1), and holes are formed in the corresponding positions of the spherical protective shell (3); the control unit comprises a switch module (6), a main control circuit module (7) and a signal conditioning circuit module (8) and is used for collecting and processing leakage characteristic signals in the pipeline and realizing autonomous positioning; the balancing weight (4) is fixed on the inner wall of the sealing structure (1) and used for ensuring that the gravity is slightly larger than the buoyancy when the detection positioning ball works in the pipeline and the vertical direction is upwardYThe moment of inertia of the shaft is far less than that of the other two shafts, and the friction force provided by the spherical protective shell (3) ensures that the spherical protective shell winds around the pipelineYThe shaft rolls along a single shaft and can be in a gravity balance state in the vertical ascending pipeline to ascend along with water flow so as to realize positioning.
2. The test location sphere of claim 1, wherein: the sealing structure (1) consists of an upper part and a lower part, and is screwed by threads and sealed by an O-shaped ring; two holes are symmetrically formed in the left and right sides of the upper half part of the sealing structure and are respectively used for installing a USB communication and charging dual-function multiplexing module (5) and a switch module (6), a plug (11) is installed on the USB communication and charging dual-function multiplexing module (5) for sealing, the switch module (6) is provided with threads, and the threads are arranged at corresponding positions of the sealing structure and are sealed; in the lower half of the sealing structure andYthreads are arranged at the cross point of the shaft according to the structural opening of the hydrophone module (10) and are sealed; for the spherical shell internal circuit module, 8 central rotation symmetrical M3 threaded holes are reserved on the concave table surface of the upper half part of the sealing structure and are connected with the sealing structure by an internal module bracket (2), and a main control circuit module (7) and a signal conditioning module are arrangedThe circuit module (8) is connected with the copper column (12) through a through hole reserved on the PCB, the power supply module (9) is connected with the upper half sealing structure through the internal module support (2), all modules finally form a whole, and the whole sealing performance is guaranteed.
3. The test location sphere of claim 1, wherein: the counterweight block (4) is fixed on the inner wall of the sealing structure (1), the number can be increased or decreased, the position can be adjusted, the design of the counterweight block (4) considers the rotational inertia of the detection positioning ball on three axes, the detection positioning ball is placed in a three-dimensional space for analysis, and any reference point in the three-dimensional space is analyzedOTaking the reference point as the origin to make a rectangular space coordinate systemOXYZDetecting the inertia tensor of the positioning ballIRepresented by a symmetric matrix:
wherein,I xx 、I yy 、I zz to be wound aroundX、Y、ZThe rotational inertia of the shaft;
the counterweight block (4) is used for balancing and calculating verification to enable the detection positioning ball to windYThe moment of inertia of the shaft is the smallest and much smaller than the moment of inertia around other two shafts, and the detection ball is taken to wind aroundYThe moment of inertia of the shaft is minimal and less than one quarter of the other two shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720705641.6U CN207049625U (en) | 2017-06-17 | 2017-06-17 | Ball is positioned for public supply mains leak detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720705641.6U CN207049625U (en) | 2017-06-17 | 2017-06-17 | Ball is positioned for public supply mains leak detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049625U true CN207049625U (en) | 2018-02-27 |
Family
ID=61492900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720705641.6U Active CN207049625U (en) | 2017-06-17 | 2017-06-17 | Ball is positioned for public supply mains leak detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049625U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218514A (en) * | 2017-06-17 | 2017-09-29 | 浙江大学 | For the place kick of public supply mains leak detection and its application process |
| CN112816147A (en) * | 2021-01-28 | 2021-05-18 | 深圳市水务工程检测有限公司 | Induction chip based on variable track |
| CN112902030A (en) * | 2021-01-28 | 2021-06-04 | 深圳市水务工程检测有限公司 | Chip structure |
-
2017
- 2017-06-17 CN CN201720705641.6U patent/CN207049625U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218514A (en) * | 2017-06-17 | 2017-09-29 | 浙江大学 | For the place kick of public supply mains leak detection and its application process |
| CN112816147A (en) * | 2021-01-28 | 2021-05-18 | 深圳市水务工程检测有限公司 | Induction chip based on variable track |
| CN112902030A (en) * | 2021-01-28 | 2021-06-04 | 深圳市水务工程检测有限公司 | Chip structure |
| CN112902030B (en) * | 2021-01-28 | 2022-12-09 | 深圳市水务工程检测有限公司 | Chip structure |
| CN112816147B (en) * | 2021-01-28 | 2022-12-27 | 深圳市水务工程检测有限公司 | Induction chip based on variable track |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107218514A (en) | For the place kick of public supply mains leak detection and its application process | |
| CN207049625U (en) | Ball is positioned for public supply mains leak detection | |
| Xu et al. | Interaction between water wave and geometrical structures of floating triboelectric nanogenerators | |
| CN206523504U (en) | A kind of soil temperature and humidity detection sampling integrated instrument | |
| CN104670514A (en) | Modular aerial photographing holder | |
| CN201382789Y (en) | Outer casing for real-time environmental parameter collection device | |
| CN212204060U (en) | Detection apparatus for fluid leaks in pipeline | |
| CN115750997A (en) | Wireless detection ball for pipeline safety detection | |
| CN117470317B (en) | Multi-parameter integrated dynamic monitoring system and method for debris flow | |
| CN105464145B (en) | Integral type integrated explosion proof system network-enabled intelligent inspection well cover | |
| CN208399358U (en) | The portable CO of seismic precursor mobile observation2Monitoring device | |
| CN204473162U (en) | A kind of modularization holder for aerial photographing | |
| CN202938903U (en) | Electric transmission line aeolian vibration monitoring device | |
| CN108956520A (en) | The portable CO of seismic precursor mobile observation2Monitoring device and monitoring method | |
| CN207571539U (en) | A kind of Indoor Environment Detection instrument based on internet | |
| CN211179436U (en) | Low-power consumption integration building site raise dust monitor | |
| CN216925564U (en) | Low-power consumption tilt sensor based on NB communication | |
| CN204856339U (en) | Hard disk of computer convenient to detect | |
| CN205334965U (en) | Computer hard disk | |
| CN219675187U (en) | NB-IOT internet of things valve control water meter | |
| CN218570347U (en) | Wisdom lamp pole terminal server | |
| CN220039585U (en) | Low-power consumption telemetering measurement water weir meter based on laser ranging technology | |
| CN118424373A (en) | Wen Zhen sensor and working method | |
| CN213661648U (en) | Equipment operation and maintenance thing allies oneself with gateway | |
| CN212321559U (en) | Gas detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |