CN117146923A - Water flow detection device - Google Patents
Water flow detection device Download PDFInfo
- Publication number
- CN117146923A CN117146923A CN202311432638.8A CN202311432638A CN117146923A CN 117146923 A CN117146923 A CN 117146923A CN 202311432638 A CN202311432638 A CN 202311432638A CN 117146923 A CN117146923 A CN 117146923A
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- Prior art keywords
- fixed
- detection device
- water flow
- riser
- arc
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- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000004804 winding Methods 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/14—Joints for pipes of different diameters or cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
- F16L27/11—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve the sleeve having the form of a bellows with multiple corrugations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a water flow detection device, which comprises a central tube, wherein a first flow sensor is arranged in the central tube, vertical plates are arranged at two ends of the central tube, circular through holes are formed in the surfaces of the vertical plates, connecting components for connecting a measuring water pipe are arranged in the through holes of the vertical plates, according to tightness, a second motor is reversed, and part of binding ropes are retracted, so that the rest of the binding ropes can be tightly sleeved on the outer side of an arc plate to form a circle, the size of the binding ropes is influenced by the length of the binding ropes, the binding ropes can be sleeved on various types of pipelines to be detected, the detection device relates to the technical field of detection devices, and compared with the prior art, the connecting components at two ends of the central tube can be changed in size through a driving component and are tightly bound on the pipelines to be detected, so that the disassembly and replacement time is saved, and the detection device can be suitable for connecting and using the water outlet pipelines of various types, and the application range of the device is wider, and the installation and the disassembly are more convenient.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a water flow detection device.
Background
And calculating whether the pollution load of the water body exceeds the environment capacity, evaluating the control effect, grasping the total amount of pollutant discharged by a pollution source, the water discharge amount and the like, and monitoring the flow of the corresponding water body. When the influence of the drainage on the environmental pollution is evaluated according to the total drainage amount, on one hand, the comprehensive analysis and comparison can be carried out on the technological process and the drainage condition by combining the material balance and the water balance of enterprises; on the other hand, the defect that individual enterprises dilute the sewage by a large amount of fresh water can be avoided, and the water-saving work is facilitated.
The detection mode of prior art detects discharge through flow sensor and panel board more, and the discharge detection device is commonly all realized being connected with the water pipe through spare parts such as ring flange and bolt, then when installing or dismantling, then need use tools such as spanner to rotate a plurality of bolts in proper order, just can accomplish and install and remove the operation, and whole assembly and disassembly process is very inconvenient, and is wasted time and energy, because detection device's link is mostly fixed length and size, the flexibility is not good during the use, leads to the phenomenon that the part of connection takes off to appear easily, influences the detection precision.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide the water flow detection device to solve the problems in the background technology, the water flow detection device is novel in structure, the connecting components at the two ends of the central tube can be changed in size through the driving component according to the size of the connecting pipeline and are tightly bound on the pipeline to be detected, the disassembly and replacement time is saved, and the water flow detection device can be suitable for connecting water outlet pipelines of various types, so that the application range of the device is wider, and the installation and the disassembly are more convenient.
In order to achieve the above object, the present invention is realized by the following technical scheme: the utility model provides a water flow detection device, includes the center tube, the internally mounted of center tube has first flow sensor, the both ends of center tube are equipped with the riser, and have seted up circular through-hole on the riser surface, be equipped with the coupling assembling who connects the measurement water pipe in the through-hole of riser, and coupling assembling includes the arc board, centre of a circle symmetry equidistance is equipped with a plurality of arcs boards in the through-hole of riser, adjacent be fixed with the elastic membrane between the arc board, the riser top is equipped with the drive assembly that can change arc radius and bind with the elastic membrane, and drive assembly includes the link, the link is fixed at the riser top, the reel is installed through the bearing rotation to one side of arc board front end to the link, and the inside rolling of reel has the wiring.
Further, the connecting assembly further comprises a gear ring, the gear ring is rotatably installed on the outer ring of the through hole of the vertical plate through a bearing, a gear is rotatably installed on one side of the vertical plate through the bearing, the gear is meshed with the gear ring, a first motor is fixed on the back of the vertical plate corresponding to the gear, and the output end of the first motor is fixed with the gear.
Further, the back of riser corresponds the position fixed with the telescopic link of arc board, and the extension end and the arc board tail end fixing of telescopic link, the extension end and the receiving end of telescopic link are fixed with the spring.
Further, the mounting frame is fixed to the bottom of the vertical plate, and the lowest end of the gear ring is higher than the mounting frame.
Further, the driving assembly comprises an electric push rod, the electric push rod is fixed on the surface of one side of the gear ring, which is positioned on the winding shaft, a pressing block is fixed at the extension end of the electric push rod, and the pressing block is in extrusion contact with the front end of the arc plate.
Further, the pressing block is fixedly connected with the movable end of the binding rope, a second motor is fixed at the top of the connecting frame corresponding to the winding shaft, and the output end of the second motor is fixed with the winding shaft.
Further, a corrugated pipe is fixed between the tail end of the elastic film and the central pipe.
Further, a second flow sensor is arranged on the inner wall of the arc plate at the top of the vertical plate, and flow meters are arranged at the tops of the arc plate and the central tube.
The invention has the beneficial effects that: the water flow detection device comprises a central tube; a flow meter; a first flow sensor; a bellows; a mounting frame; a riser; a connection assembly; a second flow sensor; an arc plate; an elastic film; a gear ring; a gear; a telescopic rod; a spring; a first motor; a drive assembly; a connecting frame; a second motor; a winding shaft; binding ropes; an electric push rod; briquetting;
according to the invention, the connection between the pipeline formed by the arc plates and the central pipe is maintained through the expansion and contraction of the corrugated pipe, and meanwhile, the corrugated pipe can be freely expanded and contracted according to the positions of the two ends of the pipeline to be connected, so that the pipeline formed by the arc plates can be sleeved on the pipeline to be tested.
According to the tightness, the second motor is reversed, and the part of the binding rope is retracted, so that the rest of the binding rope can be tightly sleeved on the outer side of the arc plate to form a round shape, the size of the binding rope is influenced by the length of the binding rope, and the binding rope can be sleeved on various types of pipelines to be tested.
The arc plates synchronously move under the limiting action of the telescopic rod and the spring, and the maximum radius in the initial state, along with the unreeling of the binding ropes of the driving assembly, the arc plates are extruded to shrink the radius, at the moment, the telescopic rod synchronously stretches, the moving stability of the arc plates is kept, the arc plates are guided, and a circular pipeline can be formed after the arc plates move.
Compared with the prior art, the connecting components at the two ends of the central tube can change the size according to the size of the connecting pipeline through the driving component, are tightly bound on the pipeline to be tested, save the time of disassembly and replacement, and can be suitable for the connection and use of the water outlet pipelines of various types, so that the device has wider application range and is more convenient to install and disassemble.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a water flow rate detection device according to the present invention;
FIG. 2 is a schematic view of the internal structure of a central tube of a water flow rate detection device according to the present invention;
FIG. 3 is a schematic view of the front end of a connecting assembly of a water flow rate detecting device according to the present invention;
FIG. 4 is a schematic view of the rear end of a connection assembly of a water flow rate detection device according to the present invention;
fig. 5 is a schematic diagram of a driving assembly of a water flow detecting device according to the present invention.
In the figure: 1. a central tube; 11. a flow meter; 12. a first flow sensor; 2. a bellows; 3. a mounting frame; 31. a riser; 4. a connection assembly; 41. a second flow sensor; 42. an arc plate; 43. an elastic film; 44. a gear ring; 45. a gear; 46. a telescopic rod; 47. a spring; 48. a first motor; 5. a drive assembly; 51. a connecting frame; 52. a second motor; 53. a winding shaft; 54. binding ropes; 55. an electric push rod; 56. and (5) briquetting.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a water flow detection device, includes center tube 1, the internally mounted of center tube 1 has first flow sensor 12, the both ends of center tube 1 are equipped with riser 31, and have seted up circular through-hole on the riser 31 surface, be equipped with the coupling assembling 4 of connecting the measurement water pipe in the through-hole of riser 31, and coupling assembling 4 includes arc 42, the inside circular symmetry equidistance of through-hole of riser 31 is equipped with a plurality of arcs 42, adjacent be fixed with elastic membrane 43 between the arc 42, riser 31 top is equipped with can change arc 42 radius and with the drive assembly 5 of elastic membrane 43 binding, and drive assembly 5 includes link 51, link 51 is fixed at riser 31 top, one side of link 51 towards arc 42 front end is through the bearing rotation installation reel 53, and the inside rolling of reel 53 has the binding rope 54, during the device, connects coupling assembling 4 and the pipeline that awaits measuring of center tube 1 both sides, and the pipeline radius that the follow is constituteed to the drive assembly 5 adjusts arc 42 to bind it on the pipeline and detect and seal the pipeline that awaits measuring, and can guarantee the sealing performance of sealing washer 4 outside the pipeline, seal the sealing washer (in order to guarantee the sealing performance of the sealing washer).
In this embodiment, the back of the riser 31 is fixed with a telescopic rod 46 corresponding to the position of the arc plate 42, the extension end of the telescopic rod 46 is fixed with the tail end of the arc plate 42, the extension end and the receiving end of the telescopic rod 46 are fixed with springs 47, the bottom of the riser 31 is fixed with the mounting frame 3, the lowest end of the gear ring 44 is higher than the mounting frame 3, the arc plate 42 keeps moving synchronously under the limiting action of the telescopic rod 46 and the springs 47, and the maximum radius in the initial state, along with the unreeling of the binding rope 54 of the driving assembly 5, the arc plate 42 is extruded and contracted in radius, at this time, the telescopic rod 46 extends synchronously, the moving stability of the arc plate 42 is maintained, the arc plates 42 are guided, and a circular pipeline can still be formed after the arc plates 42 move.
In this embodiment, the connecting assembly 4 further includes the gear ring 44, the through hole outer ring of the riser 31 is rotatably mounted with the gear ring 44 through the bearing, one side of the riser 31 is rotatably mounted with the gear 45 through the bearing, and the gear 45 is engaged with the gear ring 44, the back of the riser 31 corresponding to the gear 45 is fixed with the first motor 48, and the output end of the first motor 48 is fixed with the gear 45, the driving assembly 5 includes the electric push rod 55, the gear ring 44 is fixed with the electric push rod 55 on one side surface of the winding shaft 53, and the extension end of the electric push rod 55 is fixed with the pressing block 56, the pressing block 56 is in pressing contact with the front end of the arc plate 42, the pressing block 56 is fixedly connected with the movable end of the binding rope 54, and the connecting frame 51 is fixed with the second motor 52 corresponding to the top of the winding shaft 53, the output end of the second motor 52 is fixed with the winding shaft 53, in this portion, the pressing block 56 is controlled by the electric push rod 55 to descend, and is adjusted to the radius close to the pipeline to be measured, then the second motor 52 drives the winding shaft 53 to unwind, the first motor 48 drives the gear 45 to rotate with the pressing block 44, thereby the pressing block 44 is engaged with the pressing block 44, and the winding rope 54 is wound around the winding shaft 54, and the winding rope 54 is drawn by a circle around the winding shaft 54, and the winding rope 54 is tightly and the winding around the winding shaft 54, and the winding rope is wound around the winding shaft 54, and the winding shaft is tightly and the winding wire is wound around the winding shaft and the winding wire around the winding wire.
In this embodiment, the bellows 2 is fixed between the tail end of the elastic film 43 and the central tube 1, and the connection between the tube formed by the arc plates 42 and the central tube 1 is maintained by expanding and contracting the bellows 2, and the bellows 2 can be freely expanded and contracted according to the positions where the two ends of the tube need to be connected, so as to meet the requirement that the tube formed by the arc plates 42 can be sleeved on the tube to be tested.
In this embodiment, the second flow sensor 41 is installed on the inner wall of the arc plate 42 at the top of the riser 31, and the flow meters 11 are installed at the tops of the arc plate 42 and the central tube 1, so that the measurement error is reduced by the common measurement of the flow sensors and the flow meters 11 at two different positions (because the size of the pipeline formed by the arc plate 42 may be smaller than that of the central tube 1, certain errors are caused in the two parts due to different thicknesses of the pipeline, and after the two parts are separately detected, the errors are eliminated to obtain a relatively accurate measurement value).
When the device is used, the connecting assemblies 4 on two sides of the central tube 1 are connected with a pipeline to be tested, then the pressing blocks 56 are controlled to descend through the electric push rods 55 according to the size of the pipeline to be tested, the radius close to the pipeline to be tested is regulated, then the second motor 52 drives the winding shaft 53 to be wound, the first motor 48 drives the gear 45 to rotate and mesh with the gear ring 44, the gear ring 44 drives the pressing blocks 56 to encircle, the wound binding ropes 54 are pulled to encircle the pipeline formed by the arc plates 42 for a circle, according to the tightness, the second motor 52 is reversed, the binding ropes 54 are retracted, the residual binding ropes 54 can be tightly sleeved on the outer sides of the arc plates 42 to form a circle, the size is influenced by the length of the binding ropes 54, the binding ropes can be sleeved on the pipelines to be tested in various models, and then water flow is detected.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a water flow detection device, includes center tube (1), its characterized in that: the utility model discloses a measuring device for measuring water flow, including center tube (1), internally mounted has first flow sensor (12), the both ends of center tube (1) are equipped with riser (31), and have seted up circular through-hole on the surface riser (31), be equipped with coupling assembling (4) of connecting the measuring water pipe in the through-hole of riser (31), and coupling assembling (4) include arc board (42), centre of a circle symmetry equidistance is equipped with a plurality of arc boards (42) in the through-hole of riser (31), adjacent be fixed with elastic membrane (43) between arc board (42), riser (31) top is equipped with changeable arc board (42) radius and drive assembly (5) of binding with elastic membrane (43), and drive assembly (5) are including link (51), link (51) are fixed at riser (31) top, one side of link (51) towards arc board (42) front end is installed through the bearing rotation, and the inside rolling of rolling axle (53) has to tie up rope (54).
2. A water flow rate detection device according to claim 1, characterized in that: the connecting assembly (4) further comprises a gear ring (44), the gear ring (44) is rotatably mounted on the outer ring of the through hole of the vertical plate (31) through a bearing, a gear (45) is rotatably mounted on one side of the vertical plate (31) through the bearing, the gear (45) is meshed with the gear ring (44), a first motor (48) is fixed on the back of the vertical plate (31) corresponding to the gear (45), and the output end of the first motor (48) is fixed with the gear (45).
3. A water flow rate detection device according to claim 2, characterized in that: the back of riser (31) corresponds the position of arc board (42) and is fixed with telescopic link (46), and the extension end and the arc board (42) tail end fixing of telescopic link (46), the extension end and the receiving end of telescopic link (46) are fixed with spring (47).
4. A water flow rate detection device according to claim 3, characterized in that: the bottom of the vertical plate (31) is fixedly provided with a mounting frame (3), and the lowest end of the gear ring (44) is higher than the mounting frame (3).
5. A water flow rate detection device according to claim 2, characterized in that: the driving assembly (5) comprises an electric push rod (55), the electric push rod (55) is fixed on one side surface of the gear ring (44) positioned on the winding shaft (53), a pressing block (56) is fixed at the extension end of the electric push rod (55), and the pressing block (56) is in extrusion contact with the front end of the arc plate (42).
6. A water flow rate detection device according to claim 5, wherein: the pressing block (56) is fixedly connected with the movable end of the binding rope (54), a second motor (52) is fixed at the top of the connecting frame (51) corresponding to the winding shaft (53), and the output end of the second motor (52) is fixed with the winding shaft (53).
7. A water flow rate detection device according to claim 1, characterized in that: a corrugated pipe (2) is fixed between the tail end of the elastic film (43) and the central pipe (1).
8. A water flow rate detection device according to claim 1, characterized in that: the second flow sensor (41) is arranged on the inner wall of the arc plate (42) at the top of the vertical plate (31), and the flow meter (11) is arranged at the tops of the arc plate (42) and the central tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311432638.8A CN117146923A (en) | 2023-11-01 | 2023-11-01 | Water flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311432638.8A CN117146923A (en) | 2023-11-01 | 2023-11-01 | Water flow detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117146923A true CN117146923A (en) | 2023-12-01 |
Family
ID=88906635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311432638.8A Pending CN117146923A (en) | 2023-11-01 | 2023-11-01 | Water flow detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117146923A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115290830A (en) * | 2022-09-30 | 2022-11-04 | 武汉科技大学 | Automobile emission detection device |
| CN218064140U (en) * | 2022-08-01 | 2022-12-16 | 湖北欧利泰科技有限公司 | Pressure detection device of high-pressure stop valve |
| CN218885336U (en) * | 2022-12-16 | 2023-04-18 | 福建省三辉消防器材有限公司 | Fire-fighting water pipe sealing performance detection device |
| CN219798457U (en) * | 2023-05-24 | 2023-10-03 | 上海齐知科技有限公司 | Flow sensor for industrial monitoring |
-
2023
- 2023-11-01 CN CN202311432638.8A patent/CN117146923A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN218064140U (en) * | 2022-08-01 | 2022-12-16 | 湖北欧利泰科技有限公司 | Pressure detection device of high-pressure stop valve |
| CN115290830A (en) * | 2022-09-30 | 2022-11-04 | 武汉科技大学 | Automobile emission detection device |
| CN218885336U (en) * | 2022-12-16 | 2023-04-18 | 福建省三辉消防器材有限公司 | Fire-fighting water pipe sealing performance detection device |
| CN219798457U (en) * | 2023-05-24 | 2023-10-03 | 上海齐知科技有限公司 | Flow sensor for industrial monitoring |
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Application publication date: 20231201 |
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| RJ01 | Rejection of invention patent application after publication |