CN1607348A - Check valve for detecting water leakage and water leakage alarm system using the same - Google Patents
Check valve for detecting water leakage and water leakage alarm system using the same Download PDFInfo
- Publication number
- CN1607348A CN1607348A CN 200410071070 CN200410071070A CN1607348A CN 1607348 A CN1607348 A CN 1607348A CN 200410071070 CN200410071070 CN 200410071070 CN 200410071070 A CN200410071070 A CN 200410071070A CN 1607348 A CN1607348 A CN 1607348A
- Authority
- CN
- China
- Prior art keywords
- valve
- water leakage
- fluid passage
- main valve
- safety check
- 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.)
- Pending
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides an apparatus for monitoring water leakage at all time by simple facilities and issuing an alarm for water leakage and to respond not only to very small water leakage naturally occurring in an aging water pipe etc. but also to artificial water leakage due to a faucet left open, failure of facilities such as a hot water supply device, and operation mistakes. A simple water leakage alarm system comprises both a check valve for detecting water leakage for switching at the detection of a needle, which functions similarly to a valving element of a check valve provided for a water conduit, and transmitting the movement of the valving element as a detection signal; and a signal processing device for processing the detection signal transmitted from the check valve for detecting water leakage and activating a water leakage alarm. The water leakage check valve comprises a main valve and a subvalve. The main valve operates at a large quantity of flow corresponding to artificial water leakage, and the subvalve sensitively operates correspondingly to very small naturally occurring water leakage.
Description
Technical field
The present invention relates to a kind of water leakage alarm system of leaking and detecting safety check and using this safety check, especially, described leaking detected the structure that moves that safety check has the valve body that can detect the safety check that is arranged on water pipe, described water leakage alarm system has described leaking and detects safety check and signal processing apparatus, described signal processing apparatus receives the testing signal from the detection safety check that leaks, analyze, start and report to the police.
Background technique
There is the water pipe that leaks not only to cause the increase of unnecessary water rate in the building, also can causes the house to destroy and property loss simultaneously, bring a lot of troubles to the resident according to degree of leaking or place.Especially as intensive dwelling house and hotels such as apartments, a place leaks and causes considerable damage may for most lower floors unit and room, and in actual life, such incident takes place often.Exchange less between the resident of intensive dwelling house, the lodger in hotel is temporary transient, constantly mobile, and come in case leak to spread easily, therefore should often detect in these places leaking, and in time make a response, situation is informed manager and resident family, so that the expansion that avoids damage.
Cause the two kinds of forms of having leaked of house and property loss, a kind of is small or a large amount of the leaking that causes because of reasons such as water pipe are aging, and another kind is that the people is leaking of causing, as forgets and close water tap or water works fault or operate miss etc.No matter any leaking is the destruction that prevents that it from causing, and it is necessary that the timely detection of leaking and reporting to the police starts.
There are several conducts often to detect the interior method of leaking of building in the prior art.For example, can be by the sound wave shock detection of measuring the water pipe conduction leak (seeing patent documentation 1).Also has utilization ultrasound examination leak (seeing patent documentation 2).Yet said method all needs main equipment, and can only detect a large amount of leaking.And, detect less than as forget artificial leaking such as turn off the tap.
Another kind method is about having the safety check of opening display function, it is by being arranged on the magnetic force that a plurality of magnetic force detectors on the valve pocket detect the magnet that safety check have, and just can measure the ratio (seeing patent documentation 3) of displacement distance and the water flow of passing through safety check of the valve body of safety check.
The another kind of method of leaking that detects is that by collecting the pulse data signal of analyzing by being installed in the sensor reception on the Rotary Water flowmeter, generation has judged whether to leak.This invention is a purpose to detect abiogenous small leaking, allow water flow and the water flow that does not make under the situation of water under the situation of more not leaking, the generation (seeing patent documentation 4) that judged whether to leak is so can not be that leaking of causing made a response to the people.
Patent documentation 1:(Japan) spy opens the 2002-122502 communique
Patent documentation 2:(Japan) spy opens the 2002-131170 communique
Patent documentation 3:(Japan) spy opens the 2000-205447 communique
Patent documentation 4:(Japan) spy opens the 2002-055019 communique
Summary of the invention
The present invention is leaked with principle detection unlike the prior art, its purpose is to provide a kind of leaking to detect safety check and water leakage alarm system, the described detection safety check that leaks has sensor, but the position of described sensor perception mover of interlock along with being installed in moving of main valve in the water pipe and secondary valve, described water leakage alarm system has signal processing apparatus, described signal processing apparatus receives the signal that sends from the described sensor that leaks the detection valve, signal is analyzed, started water-leakage alarm.
For reaching above-mentioned purpose, the detection safety check that leaks has: valve pocket, and it forms cylindrical fluid passage; Main valve seat, it removably is installed in the described valve pocket; Main valve, it is resisted against main valve seat by main spool spring to inlet side in the fluid passage, in central interior auxiliary-seat is installed, and the fluid passage opening area is big; Secondary valve, it is resisted against auxiliary-seat by auxiliary valve spring to inlet side in the fluid passage, and the fluid passage opening area is little; Mover, it is compared with secondary valve with main valve, more close fluid passage, the position that is mounted outlet side, and along with main valve or secondary valve link to moving of outlet side; Sensor, the outlet side of its fluid passage in valve pocket is installed facing to the fluid passage, when mover moves to the precalculated position and when entering the perception zone, can the perception mover, send testing signal.
And, in an embodiment of the present invention, described valve pocket has inlet side cover parts and outlet side cover parts, described inlet side cover parts are connected with feedwater side pipe road, described outlet side cover parts are connected with the water outlet side pipeline, and are provided with the sensor towards described fluid passage when holding described Supporting fixture and mover, and two are overlapped parts and link together, and the spring of described auxiliary-seat is pushed secondary valve to inlet side by described mover.
And in an embodiment of the present invention, described sensor is made up of the proximity switch, and when mover was close, described proximity switch was carried out switching function.
In addition, has signal processing apparatus according to water leakage alarm of the present invention system, described signal processing apparatus cooperates with the described detection safety check that leaks, to handling from the testing signal of the described sensor that detects safety check of leaking, described signal handling equipment has first discriminator circuit and second discriminator circuit, the signal that described first discriminator circuit sends according to sensor, differentiate the switch of main valve or secondary valve, described second discriminator circuit is differentiated the switch endurance of main valve or secondary valve, according to the identification result of discriminator circuit, send the water leakage alarm signal.
In addition, in an embodiment of the present invention, described water leakage alarm system is according to water leakage alarm signal enabling alarm, and, having control gear, described control gear carries out switch control to being positioned at the described main switching valve that detects the safety check upstream side that leaks.
Therefore, the present invention can provide a kind of and use simple equipment just can detect the device that leaks, sends alarm signal, thereby prevent to spread the destruction that causes because of leaking, especially, no matter be because water pipe aging cause leak naturally or the people is leaking of causing, as forget turn off the tap, heating equipment fault, operate miss, he all can handles it.
The valve body that detects safety check that leaks according to the present invention is divided into main valve and secondary valve, when water flow is little, and only open secondary valve, and when water flow is big, open main valve, therefore, valve body can be made sensitive reaction to tiny flow quantity.And what the switch of this valve body can be according to the mover of valve body interlock is mobile perceived.Alarm system according to the present invention has signal processing apparatus, and described signal processing apparatus is made comparison to the switching signal of the valve body that detects valve from leaking and the signal value that predetermined sign leaks, and, sends alarm signal under certain condition.Therefore, no matter be because water pipe aging cause leak naturally or the people is leaking of causing, as forget turn off the tap, heating equipment fault, operate miss, he alarm system all can be sent corresponding alarm signal.Simultaneously, report to the police accordingly after can making judgement to the size of leaking.
Description of drawings
Fig. 1 show according to of the present invention leak detect safety check do not have water to flow the time sectional drawing.
Fig. 2 shows the sectional drawing according to the water flow hour that detects safety check of leaking of the present invention.
Fig. 3 shows the sectional drawing of the water flow that detects safety check of leaking according to the present invention when big.
Fig. 4 shows the sectional drawing according to another embodiment of the detection safety check that leaks of the present invention.
Fig. 5 shows the structured flowchart according to water leakage alarm of the present invention system.
Fig. 6 shows the signal flow of water leakage alarm system.
Symbol description among the figure
1: the detection safety check leaks
4: valve pocket
5: main valve seat
6: main valve
7: main spool spring
8: auxiliary-seat
9: secondary valve
10: auxiliary valve spring
14: mover
16: outlet side cover parts
17: sensor
18: inlet side cover parts
24: the water leakage alarm system
29: the detection safety check leaks
30: signal processing apparatus
31: alarm
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are described in detail.
Fig. 1 detects the sectional drawing of safety check according to of the present invention leaking, and shows when valve to close and state when not having water to flow.This detection safety check that leaks is characterised in that to have: a main valve and a secondary valve; Mover, it links along with moving of arbitrary valve body in main valve and the secondary valve; Sensor is used for the described mover of perception and moves to preposition.Below, be described in detail.
The detection safety check 1 that leaks has: valve pocket 4, and it forms cylindrical fluid passage A; Main valve seat 5, it removably is installed in the described valve pocket 4; Main valve 6, it is resisted against main valve seat 5 by main spool spring 7 to inlet 2 sides in the A of fluid passage, in central interior auxiliary-seat 8 is installed, and the fluid passage opening area is big; Secondary valve 9, it is resisted against auxiliary-seat 8 by auxiliary valve spring 10 to inlet 2 sides in the A of fluid passage, and the fluid passage opening area is little; Mover 14, it is compared with main valve 6 or secondary valve 9, more close fluid passage, the position that is mounted outlet side, and along with main valve 6 or secondary valve 9 link to moving of outlet 3 sides; Sensor 17, outlet 3 sides of its fluid passage A in valve pocket 4 are installed facing to fluid passage A, when mover 14 moves to the precalculated position and when entering the perception zone, can perception mover 14 and send testing signal.
In addition, in the present embodiment, the zone that contacts main valve seat 5 and auxiliary-seat 8 respectively at main valve 6 and secondary valve 9 has embedded the mat made from materials such as ebonite 23.And mover 14 forms one with secondary valve 9.
In addition, main valve seat 5 forms one with Supporting fixture 5a, and Supporting fixture 5a is used to support main valve 6 and secondary valve 9, and Supporting fixture 5a forms the space of guaranteeing fluid passage area when main valve 6 is opened.
In addition, in the present embodiment, valve pocket 4 has inlet side cover parts 18 and outlet side cover parts 16, described inlet side cover parts 18 are connected with feedwater side pipe road B, described outlet side cover parts 16 are connected with water outlet side pipeline C, and hold described Supporting fixture 5a and mover 14, and the sensor 17 towards passage A is set.Two cover parts 16 and 18 link together by mode such as screwing togather.In addition, mover 14 is subjected to the elastic force of auxiliary valve spring 10 by secondary valve 9, is resisted against inlet 2 one sides of water outlet one side 13 of supporting frame 5a.
And in the present embodiment, the shape of mover 14 is discoid, perpendicular to cylindrical fluid passage A, is provided with fluid passage 15 in the mover 14, and mover 14 is made by metallic material such as stainless steel, aluminium, Cuprum alloys.Sensor 17 is common proximity switches, be installed in the cover parts 16 of outlet side, when metal mover 14 near the time, impedance changes and carries out switching function.But the shape of mover 14 and material and the proximity switch that detects mover are not limited to present embodiment, and various distortion mode of executions can be arranged.In addition, can be provided with magnet, use a guiding sensor as sensor 17 in the periphery of mover 14, when magnet near the time carry out switching function.
Fig. 5 shows the structure of the water leakage alarm system 24 that utilizes the detection safety check foundation of leaking of the present invention.Fig. 6 shows the signal flow of water leakage alarm system 24.In Fig. 5, signal processing apparatus 30 cooperates with the detection safety check 29 that leaks, and the testing signal that the sensor that detects safety check 29 to leaking transmits is handled.In Fig. 6, signal handling equipment 30 has the first discriminator circuit 30a and the second discriminator circuit 30b that the testing signal that transmits according to sensor 34 is carried out function, the former detects the switch of main valve or secondary valve, the latter measures the endurance of main valve or secondary threshold switch, by the identification result of discriminator circuit 30a and 30b, produce water leakage alarm signal S1a and S1b and main switching valve shutdown signal S2a and 2B.
In addition, in this signal processing apparatus 30, start alarm 31 according to water leakage alarm signal S1a and S1b, and have control gear 35, it carries out switch control according to water leakage alarm signal S2a and S2b to the main switching valve 33 that is positioned at upper reaches one side that detects safety check 29 of leaking.And the water leakage alarm signal not only is sent to alarm 31, also can be sent to the centralized management chamber 32 (have people on duty) of intensive dwelling house 25 grades, leaks like this to be found immediately and to handle.
As shown in Figure 1, under the immobilising state of fluid, that is, road B is identical with the hydraulic pressure of water outlet side pipeline C for the feedwater side pipe, so, because the elastic force effect of main spool spring 7 and auxiliary valve spring 10 makes main valve 6 contact with main valve seat 5; Because the elastic force effect of auxiliary valve spring 10 makes secondary valve 9 contact with auxiliary-seat 8; And water outlet one lateral section 11 of main valve 6 contacts with water inlet one lateral section 13 of mover 14.
When water outlet side pipeline C has a spot of leaking, the pressure of pipeline C can reduce gradually, if the pressure difference of feedwater side pipe road B and water outlet side pipeline C exceeds the elastic force of auxiliary valve spring 10, as shown in Figure 2, secondary valve 9 is pushed to water outlet one side, open allow the logical fluid passage A of a spot of current (flow directions of mark 19 expression fluids), the mover 14 that forms one with secondary valve 9 arrives the perception zone (being relevant position longitudinally with fluid passage A) of sensor 17 to water outlet one side shifting.
After secondary valve 9 is opened, water flows to water outlet side pipeline C via fluid passage A from feedwater side pipe road B, if a spot of leaking, the pressure reduction of pipeline B and C can be offset the elastic force of auxiliary valve spring 10 in the relative short time, thereby secondary valve 9 contacts with auxiliary-seat 8, and fluid passage A is closed.Sensor 17 detects moving of secondary valve with the pulse singaling of certain-length, and sends to the first discriminator circuit 30a.
In the first discriminator circuit 30a, detect pulse signal and pulse signal width.When above-mentioned leaking continues, receive the next pulse signal in regulation in resetting time, this resetting time is longer at interval than the described deration of signal, is calculated the quantity of pulse signal by calculator.If the quantity of pulse signal exceeds predetermined value, export (little) the alarm signal S1a (abiogenous a spot of leaking or artificial leaking for example, do not fastened water tap) that leaks to alarm 31.In the second discriminator circuit 30b, if after warning, continue this information for a long time, so after the process scheduled time, to control gear 35 transfer operation signal S2a, to close main switching valve 33.In practical operation, in centralized management chamber 32 etc., whether after the identification alarm signal, identifying has unusually, sends the open main switching valve 33 of operation signal and the setting of the described calculator that resets then.
In addition, if in water outlet side pipeline C, sizable leaking occur, the hydraulic pressure in the pipeline C descends fast, only depends on the opening of secondary valve 9 can not offset pressure poor.That is, increase in water flow, water outlet one side of secondary valve 9 and the pressure reduction of water inlet one side are when making secondary valve 9 attached to the elastic force of the auxiliary valve spring 10 of auxiliary-seat 8, and secondary valve 9 keeps opened state.At this moment, when the pressure reduction of feedwater side pipe road B and water outlet side pipeline C exceeds total elastic force of main spool spring 7 and auxiliary valve spring 10, as shown in Figure 3, main valve 6 is pushed to water outlet one side, the open fluid passage A (flow directions of mark 20 expression fluids) that allows that a large amount of current lead to, because moving of main valve 6, mover 14 arrive the perception zone (being relevant position longitudinally with fluid passage A) of sensor 17 also to water outlet one side shifting.
After main valve 6 is opened, water flows to water outlet side pipeline C via fluid passage A from feedwater side pipe road B, the pressure reduction of B, C is offset the elastic force of main spool spring 7 and auxiliary valve spring 10, main valve 6 contacts with main valve seat 5, main valve is closed, what the time ratio of this process need was mentioned in the above will grow, and valve cuts out needed time by the size decision of leaking.Sensor 17 detects moving of main valve with the pulse singaling more than the certain-length, and sends to the first discriminator circuit 30a.
In the first discriminator circuit 30a, detect pulse signal and pulse signal width.When above-mentioned leaking continues, receive the next pulse signal in regulation in resetting time, this resetting time is longer at interval than the described deration of signal, is calculated the quantity of pulse signal by calculator.If the quantity of pulse signal exceeds predetermined value, export (greatly) the alarm signal S1b (abiogenous a spot of leaking or artificial leaking for example, do not fastened water tap) that leaks to alarm 31.In the second discriminator circuit 30b, if after warning, continue this information for a long time, so after the process scheduled time, to control gear 35 transfer operation signal S2b, to close main switching valve 33.In practical operation, in centralized management chamber 32 etc., whether after the identification alarm signal, identifying has unusually, sends the open main switching valve 33 of operation signal and the setting of the described calculator that resets then.
As mentioned above, for natural and artificial leaking, the detection safety check that leaks according to the present invention all can be sent out the corresponding pulses signal.In addition, the water leakage alarm system can transmit and differentiate the alarm signal of size of leaking, and in case of emergency, can close main switching valve 33, therefore, can prevent from automatically to leak.
And, as shown in Figures 2 and 3, have leaking of main valve 6 and secondary valve 9 and detecting in the safety check 1 according to of the present invention, when water flow hour open secondary valve 9, open main valve 6 when water flow is big, the valve open mode changes according to water flow, promptly changes into the continuous openness mode from the spaced on-off mode of pulsed.Yet, can be by adjusting main spool spring 7 and the spring constant of auxiliary valve spring 10 and the open area area of passage 19 and 20, decision is changed into the continuous openness mode at the open main valve of which flow or at which flow open mode by the pulsed on-off mode.If detect the current of tiny flow quantity, the current open area of the fluid passage 21 when the current open area of fluid passage 19 was wanted significantly to open less than main valve 6 when secondary valve 9 was opened.
Fig. 4 shows another embodiment's that leaking of the part that belongs to water leakage alarm of the present invention system detect safety check 1 sectional drawing.Shown in Fig. 4 is that valve cuts out and do not have the state of current.At this, the part different with Fig. 1 only is described.In Fig. 1,, therefore can make mover 14 be pushed to water outlet one side and be resisted against valve pocket 4 by 9 elastic force that receive auxiliary valve spring 10 of secondary valve because mover 14 forms one with secondary valve 9.And in Fig. 4, mover 14 is separated with secondary valve 9, and it is resisted against the valve pocket 4 of water inlet one side by mover spring 21.
As mentioned above, Fig. 5 shows according to water leakage alarm of the present invention system 24, wherein, has supposed the pipe arrangement of the water supply pipe in the intensive dwelling house.In intensive dwelling house 25, tap water arrives 28 (each family), individual management zone from tap water supply pipe 26 through water meter 27.At the water supply side of water meter 27 the detection safety check 29 that leaks is installed, tap water is supplied with each watering equipment from the water supply side that detects safety check that leaks.Tap water flow in individual management zone 28 by main valve or secondary threshold switch, is leaked and is detected the sensor of safety check 29, and its signal is sent to signal processing apparatus 30.In signal handling equipment 30, to analyzing, leak if determine to have from the signal that detects safety check 29 that leaks, promptly start alarm buzzer 31, and signal is sent to centralized management chamber 32.In addition, in the present embodiment, signal processing apparatus 30 is arranged on individual management zone 28, but also can be arranged on centralized management chamber 32.
Claims (7)
1. the detection safety check that leaks is characterized in that, comprising:
Valve pocket, it is formed with cylindrical fluid passage;
Main valve seat, it is installed in the described valve pocket;
Main valve, the fluid passage opening area of described main valve is big, and described main valve is resisted against described main valve seat by main spool spring to inlet side in described fluid passage, in the central interior of described main valve auxiliary-seat is installed;
Secondary valve, the fluid passage opening area of described secondary valve is little, and described secondary valve is resisted against described auxiliary-seat by auxiliary valve spring to inlet side in described fluid passage;
Mover, it is compared with described secondary valve with described main valve, more close described fluid passage, the position that is mounted outlet side, and in described fluid passage along with described main valve or described secondary valve link to moving of outlet side;
Sensor, the described fluid passage outlet side that it is installed in the described valve pocket can move to the precalculated position by the described mover of perception, and send testing signal.
2. the detection safety check that leaks according to claim 1 is characterized in that,
Described valve pocket has inlet side cover parts and outlet side cover parts, described inlet side cover parts are connected with feedwater side pipe road, described outlet side cover parts are connected with the water outlet side pipeline, and be provided with described sensor when holding described main valve, secondary valve, mover towards described fluid passage, and described two cover parts link together.
3. the detection safety check that leaks according to claim 1 and 2 is characterized in that,
The spring of described auxiliary-seat is pushed described secondary valve to inlet side by described mover.
4. according to each described detection safety check that leaks of claim 1 to 3, it is characterized in that described sensor is made up of the proximity switch, when described mover was close, described proximity switch was carried out switching function.
5. water leakage alarm system, it is characterized in that, has signal processing apparatus, described signal processing apparatus with detect safety check and cooperate according to each described leaking of claim 1 to 4, to handling from the testing signal of the described sensor that detects safety check of leaking, described signal processing apparatus has first discriminator circuit and second discriminator circuit, the testing signal that described first discriminator circuit sends according to described sensor, differentiate the switch of main valve or secondary valve, described second discriminator circuit is differentiated the switch endurance of main valve or secondary valve, according to the identification result of discriminator circuit, send the water leakage alarm signal.
6. water leakage alarm according to claim 5 system is characterized in that, described water leakage alarm system is according to described water leakage alarm signal enabling alarm.
7. according to claim 5 or 6 described water leakage alarm systems, it is characterized in that having control gear, described control gear carries out switch control according to described water leakage alarm signal to being positioned at the described main switching valve that detects the safety check upstream side that leaks.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003355510 | 2003-10-15 | ||
| JP2003355510A JP3650812B2 (en) | 2002-10-15 | 2003-10-15 | Water leakage warning system using check valve for water leakage detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1607348A true CN1607348A (en) | 2005-04-20 |
Family
ID=34779820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410071070 Pending CN1607348A (en) | 2003-10-15 | 2004-07-28 | Check valve for detecting water leakage and water leakage alarm system using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1607348A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858817A (en) * | 2010-06-10 | 2010-10-13 | 北京冶核技术发展有限责任公司 | Equal-pressure virtual isolation check valve sealing test method and equipment |
| CN101263376B (en) * | 2005-09-13 | 2010-10-20 | 普罗德克弗公司 | A fluid-flow control valve |
| CN101469503B (en) * | 2007-12-28 | 2012-09-05 | 苏州三星电子有限公司 | Anti-water leakage fuzzy induction system, using method thereof and washing machine equipped with the apparatus |
| CN105814555A (en) * | 2013-12-11 | 2016-07-27 | 艾科星科技公司 | Detection and mitigation of water leaks with home automation |
| CN106065971A (en) * | 2016-07-25 | 2016-11-02 | 无锡昊瑜节能环保设备有限公司 | A kind of tap fault alarm method |
| CN107842634A (en) * | 2017-12-05 | 2018-03-27 | 博纳斯威阀门股份有限公司 | A kind of Double-clack axial flow type check valve |
| CN112901832A (en) * | 2021-01-14 | 2021-06-04 | 华侨大学 | Composite one-way valve opened in grading manner |
| CN115183155A (en) * | 2021-04-02 | 2022-10-14 | 汉宇集团股份有限公司 | Water-consuming appliance for measuring water pressure and monitoring water leakage, internet of things system and working method |
-
2004
- 2004-07-28 CN CN 200410071070 patent/CN1607348A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263376B (en) * | 2005-09-13 | 2010-10-20 | 普罗德克弗公司 | A fluid-flow control valve |
| CN101469503B (en) * | 2007-12-28 | 2012-09-05 | 苏州三星电子有限公司 | Anti-water leakage fuzzy induction system, using method thereof and washing machine equipped with the apparatus |
| CN101858817A (en) * | 2010-06-10 | 2010-10-13 | 北京冶核技术发展有限责任公司 | Equal-pressure virtual isolation check valve sealing test method and equipment |
| CN101858817B (en) * | 2010-06-10 | 2012-06-27 | 北京冶核技术发展有限责任公司 | Equal-pressure virtual isolation check valve sealing test method and equipment |
| CN105814555A (en) * | 2013-12-11 | 2016-07-27 | 艾科星科技公司 | Detection and mitigation of water leaks with home automation |
| CN105814555B (en) * | 2013-12-11 | 2019-07-19 | 艾科星科技公司 | The method and system of automation control for leak |
| CN106065971A (en) * | 2016-07-25 | 2016-11-02 | 无锡昊瑜节能环保设备有限公司 | A kind of tap fault alarm method |
| CN107842634A (en) * | 2017-12-05 | 2018-03-27 | 博纳斯威阀门股份有限公司 | A kind of Double-clack axial flow type check valve |
| CN112901832A (en) * | 2021-01-14 | 2021-06-04 | 华侨大学 | Composite one-way valve opened in grading manner |
| CN115183155A (en) * | 2021-04-02 | 2022-10-14 | 汉宇集团股份有限公司 | Water-consuming appliance for measuring water pressure and monitoring water leakage, internet of things system and working method |
| CN115183155B (en) * | 2021-04-02 | 2023-08-15 | 汉宇集团股份有限公司 | Water-using electrical appliance for measuring water pressure monitoring water leakage, internet of things system and working method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7114516B2 (en) | Leak-detecting check valve, and leak-detection alarm system that uses said check valve | |
| US9624653B2 (en) | System for contaminant isolation and flushing | |
| US6675665B2 (en) | Self-sufficient electronic system for instant monitoring of steam traps, valves and installations | |
| CN103984320B (en) | A kind of enterprise's rainwater discharge outlet monitoring system based on Internet of Things and monitoring method thereof | |
| CN201043685Y (en) | Real-time monitoring system for safe operation of pipe | |
| US20090123340A1 (en) | Water quality monitoring device and method | |
| CN108706649B (en) | Sewage treatment data acquisition and transmission system | |
| EP1867970B1 (en) | Method for detecting and reporting leaks of fluid in distribution networks, particularly in condominium water or gas distribution networks, and apparatus for performing the method | |
| CN203101366U (en) | Online water quality detecting device and online water quality monitoring system for water supplying network | |
| CN1607348A (en) | Check valve for detecting water leakage and water leakage alarm system using the same | |
| WO2022205403A1 (en) | Intelligent gas meter, system and method capable of monitoring household gas leakage state | |
| CN103940545A (en) | Fire-hydrant water pressure state monitoring system and method based on WSN | |
| KR20080109216A (en) | Feed tank automatic control executive system of ubiquitous base that use zigbee and cdma | |
| CN107340375A (en) | A kind of water pollution on-Line Monitor Device and method | |
| KR20100008809A (en) | Remote water quality monitoring system | |
| CN110210783A (en) | A kind of estate management water quality monitoring system | |
| JP3650812B2 (en) | Water leakage warning system using check valve for water leakage detection | |
| CN105259325A (en) | Sewage biotoxicity online monitoring and early warning device | |
| CN104930340B (en) | Distributed wireless monitoring device and system for steam heat-supply network steam trap as well as working method | |
| CN203849606U (en) | Enterprise rainwater discharge outlet monitoring system | |
| CN106015946A (en) | Leakage monitoring device for tap water pipeline | |
| CN214809005U (en) | Front filter with ultrasonic water leakage protector longitudinally arranged | |
| CN111043529A (en) | Unattended water leakage detection method and device | |
| CN104633460A (en) | Online monitoring system for permeation of water floor heating pipe and control method thereof | |
| CN101963537A (en) | Water leakage detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |