CN102182929A - Device and method for detecting pipeline blockage - Google Patents
Device and method for detecting pipeline blockage Download PDFInfo
- Publication number
- CN102182929A CN102182929A CN2010105973875A CN201010597387A CN102182929A CN 102182929 A CN102182929 A CN 102182929A CN 2010105973875 A CN2010105973875 A CN 2010105973875A CN 201010597387 A CN201010597387 A CN 201010597387A CN 102182929 A CN102182929 A CN 102182929A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- module
- pump
- handover module
- fluid
- 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.)
- Granted
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Pipeline Systems (AREA)
Abstract
The invention provides a device for detecting pipeline blockage, which comprises a pump and a pipeline and also comprises a measuring module, an analyzing module and a judging module, wherein the measuring module is used for measuring working parameters of the pump and transmitting the working parameters to the analyzing module; the analyzing module is used for obtaining the flow quantity of fluid in the pipeline according to the received working parameters and transmitting the flow quantity to the judging module; and the judging module is used for judging whether the pipeline is blocked according to the received flow quantity of the fluid in the pipeline. The device has the advantages of high reliability, low cost, simple structure, etc.
Description
Technical field
The present invention relates to the detection of line clogging, particularly go to detect the apparatus and method of line clogging according to the working state of pump, and fluid feed system and the method for using said apparatus and method.
Background technique
Stop up detecting is the important step that the portable gas alarm detects gas circuit when adopting pump suction mode to carry out gas collecting.Tradition gas circuit clogging detecting system comprises sampling pump, air inlet pipeline, pressure sensing cell.Sampling pump is indicated gas pressure in the current pipeline with sample gas suction air inlet pipeline by pressure sensing cell.The sampling pump indicatrix comprises flow-pressure diagram, finds out its corresponding flow according to current pressure, promptly current piping flow.Sampling pump power is certain, judges according to piping flow whether management stops up.When pipeline blockage occurring, alarm is reported to the police and is artificially handled blocking pipeline.
Such detection technique has the following disadvantages:
1, boost pressure sensor in the pipeline costs an arm and a leg;
2, working pressure sensor, whole system stop up to detect by sampling pump self and pressure transducer two aspect factors to be determined;
Mainly by artificial handling failure, degree of intelligence is low during pipeline blockage.
Summary of the invention
In order to solve above shortcomings in the prior art, the invention provides the detection device of a kind of reliability height, simple in structure, line clogging that cost is low and use the fluid feed system of this detection device, the detecting method of the high line clogging of a kind of reliability also is provided and has used the fluid supply processes of this method.
The objective of the invention is to be achieved through the following technical solutions:
A kind of detection device of line clogging comprises pump, pipeline, and described detection device further comprises:
Measurement module, described measurement module is used to record the running parameter of described pump, and is sent to analysis module;
Analysis module, described analysis module are used for obtaining according to the described running parameter that receives the flow of the fluid in the described pipeline, and are sent to judge module;
Judge module, described judge module are used for judging according to the flow of the fluid in the pipeline that receives whether described pipeline stops up.
According to above-mentioned detection device, described running parameter is an operating current.
Purpose of the present invention also is achieved through the following technical solutions:
A kind of fluid feed system, described supply system comprises above-mentioned detection device, also further comprises:
The first stream handover module, the described first stream handover module are arranged on the pipeline in the described detection device, optionally make pump be communicated with the described pipeline or the external world under the control module effect;
The second stream handover module, the described second stream handover module is arranged on the downstream of the pump in the described detection device, optionally makes described pump be communicated with the pipeline of extraneous or the described first stream handover module upstream under described control module effect;
Control module, described control module are used for removing to control the described first stream handover module and the second stream handover module according to the judged result that described judge module sends.
According to above-mentioned supply system, the running parameter of pump is an operating current in the described detection device.
According to above-mentioned supply system, the described first stream handover module has first port that is communicated with described pipeline, be communicated with the second extraneous port and be communicated with the 3rd port of described pump, and described the 3rd port optionally is communicated with first port or second port.
According to above-mentioned supply system, the described second stream handover module has five-port that is communicated with the 4th extraneous port, the described pipeline of connection and the 6th port that is communicated with described pump, and described the 6th port optionally is communicated with the 4th port or five-port.
According to above-mentioned supply system, the described first stream handover module and/or the second stream handover module adopt three-way valve.
Purpose of the present invention also is achieved through the following technical solutions:
A kind of detecting method of line clogging, described detecting method may further comprise the steps:
Record the running parameter of pump, the upstream connecting tube of described pump;
Obtain the flow of the fluid in the described pipeline according to described running parameter;
Judge according to the flow of the fluid in the pipeline that receives whether described pipeline stops up.
According to above-mentioned detecting method, according to described running parameter and utilize power and the mapping relations of flow obtain the flow of described pipeline inner fluid.
According to above-mentioned detecting method, judge according to the flow of described pipeline inner fluid and the ability to work of described pump whether described pipeline stops up.
Purpose of the present invention also is achieved through the following technical solutions:
A kind of Supply Method of fluid, described Supply Method is:
Above-mentioned fluid feed system is provided;
Under the effect of pump, fluid passes through to flow to the external world behind described pipeline, the first stream handover module, pump and the second stream handover module, with accommodating fluid;
In above-mentioned work, use above-mentioned detecting method and judge whether described pipeline stops up;
If judged result is for stopping up, control module is controlled the described first stream handover module and the second stream handover module, flow to the pipeline of the described first stream handover module upstream after making extraneous fluid by the described first stream handover module, pump and the second stream handover module, clear up the inside of described pipeline.
According to above-mentioned detecting method, according to described running parameter and utilize power and the mapping relations of flow obtain the flow of described pipeline inner fluid.
According to above-mentioned detecting method, judge according to the flow of described pipeline inner fluid and the ability to work of described pump whether described pipeline stops up.
Compared with prior art, the beneficial effect that has of the present invention is:
1, system cost is low.Do not re-use expensive pressure transducer, reduced cost.
2, increase system's signal piping and stop up reliability.Original system is made up by the current state of pressure transducer, sampling pump two-part equipment judges the pipeline blockage situation; Only the performance characteristic with sampling pump self is relevant for pipeline blockage among the present invention.
3, increase the automatic back blow function, instrument is intelligent more.
Description of drawings
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used to illustrate technological scheme of the present invention, and are not to be intended to protection scope of the present invention is construed as limiting.Among the figure:
Fig. 1 is the basic block diagram according to the detection device of the embodiment of the invention;
Fig. 2 is the flow chart according to the detecting method of the embodiment of the invention;
Fig. 3 is according to the supply system of the embodiment of the invention basic block diagram when the accommodating fluid;
Fig. 4 is according to the supply system of the embodiment of the invention basic block diagram when the blowback pipeline;
Fig. 5 is the schematic representation that concerns according to the working power of the pump of the embodiment of the invention and pipeline inner fluid flow;
Fig. 6 is the flow chart according to the Supply Method of the embodiment of the invention.
Embodiment
Fig. 1-6 and following declarative description optional mode of execution of the present invention how to implement with instruction those skilled in the art and reproduce the present invention.In order to instruct technical solution of the present invention, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification that is derived from these mode of executions or replace will be within the scope of the invention.Those skilled in the art should understand that following characteristics can make up in every way to form a plurality of modification of the present invention.Thus, the present invention is not limited to following optional mode of execution, and is only limited by claim and their equivalent.
Embodiment:
Fig. 1 has schematically provided the basic block diagram of detection device of the line clogging of the embodiment of the invention.As shown in Figure 1, described detection device comprises:
The pump 2 of withdrawn fluid (gas or liquid);
The pipeline 1 that is communicated with described pump;
The measurement module (not shown) is used to record the running parameter of described pump, and is sent to analysis module;
The analysis module (not shown) is used for obtaining according to the described running parameter that receives the flow of the fluid (gas or liquid) in the described pipeline, and is sent to judge module;
The judge module (not shown) is used for judging according to the flow of the fluid (gas or liquid) in the pipeline that receives, the flow that the ability to work of pump reaches whether described pipeline stops up.
Preferably, described running parameter is an operating current.
Fig. 2 has schematically provided the flow chart of detecting method of the line clogging of the embodiment of the invention.As shown in Figure 2, described detecting method comprises the steps:
A kind of detecting method of line clogging, described detecting method may further comprise the steps:
Record the running parameter of pump, the upstream connecting tube of described pump;
Obtain the flow of the fluid (gas or liquid) in the described pipeline according to described running parameter;
Judge according to the flow of the fluid in the pipeline that receives (gas or liquid) whether described pipeline stops up.
Alternatively, according to described running parameter and utilize operating current and the mapping relations of flow (as Fig. 5) obtain as described in the flow of pipeline inner fluid (gas or liquid).
Alternatively, the flow that reaches according to the ability to work of the flow of described pipeline inner fluid (gas or liquid) and described pump judges whether described pipeline stops up.
Fig. 3 has schematically provided the basic block diagram of the fluid feed system of the embodiment of the invention.As shown in Figure 3, described supply system comprises:
Above-mentioned detection device;
The first stream handover module 3 is arranged on the pipeline 1 in the described detection device, optionally makes pump 2 be communicated with the described pipeline 1 or the external world under the control module effect;
The second stream handover module 4 is arranged on the downstream of the pump 2 in the described detection device, optionally makes described pump 2 be communicated with the pipeline 1 of extraneous or the described first stream handover module 3 upstreams under described control module effect;
Control module is used for removing to control the described first stream handover module 3 and the second stream handover module 4 according to the judged result that described judge module sends.
Alternatively, the described first stream handover module 3 has first port 31 that is communicated with described pipeline 1, be communicated with the second extraneous port 32 and be communicated with the 3rd port 33 of described pump 2, and described the 3rd port 33 optionally is communicated with first port 31 or second port 32.
Alternatively, the described second stream handover module 4 has five-port 42 that is communicated with the 4th extraneous port 41, the described pipeline of connection and the 6th port 43 that is communicated with described pump, and described the 6th port 43 optionally is communicated with the 4th port 41 or five-port 42.
Alternatively, the described first stream handover module and/or the second stream handover module adopt three-way valve.
Fig. 6 has schematically provided the flow chart of the fluid supply processes of the embodiment of the invention.As shown in Figure 6, described Supply Method comprises the steps:
Above-mentioned fluid feed system is provided;
Under the effect of pump, fluid (gas or liquid) passes through to flow to the external world behind described pipeline, the first stream handover module, pump and the second stream handover module, with accommodating fluid (gas or liquid);
In above-mentioned work, use above-mentioned detecting method and judge whether described pipeline stops up;
If judged result is for stopping up, control module is controlled the described first stream handover module and the second stream handover module, flow to the pipeline of the described first stream handover module upstream after making extraneous fluid (gas or liquid) by the described first stream handover module, pump and the second stream handover module, clear up the inside of described pipeline, as shown in Figure 4.
The application examples of fluid feed system according to the present invention in gas detecting and alarming instrument.Concrete mode is: under the effect of pump, gas to be measured flows to gas transducer after by described pipeline, the first stream handover module, pump and the second stream handover module, detects for described gas transducer; In above-mentioned work, the operating current of measurement module testing pump, analysis module utilize the electric current-flow curve of pump to learn the gas flow that described pipeline is interior; Judge module is compared this flow with the nominal operation flow of pump, thereby learns whether described pipeline stops up; If judged result is for stopping up, control module is controlled the described first stream handover module and the second stream handover module, flow to described pipeline after making extraneous gas by the described first stream handover module, pump and the second stream handover module, clear up the inside of described pipeline, thereby prevented the obstruction of pipeline effectively.
Claims (13)
1. the detection device of a line clogging comprises pump, pipeline, it is characterized in that: described detection device also comprises:
Measurement module, described measurement module is used to record the running parameter of described pump, and is sent to analysis module;
Analysis module, described analysis module are used for obtaining according to the described running parameter that receives the flow of the fluid in the described pipeline, and are sent to judge module;
Judge module, described judge module are used for judging according to the flow of the fluid in the pipeline that receives whether described pipeline stops up.
2. detection device according to claim 1 is characterized in that: described running parameter is an operating current.
3. fluid feed system, it is characterized in that: described feeding mechanism comprises the described detection device of claim 1, also further comprises:
The first stream handover module, the described first stream handover module are arranged on the pipeline in the described detection device, optionally make pump be communicated with the described pipeline or the external world under the control module effect;
The second stream handover module, the described second stream handover module is arranged on the downstream of the pump in the described detection device, optionally makes described pump be communicated with the pipeline of extraneous or the described first stream handover module upstream under described control module effect;
Control module, described control module are used for removing to control the described first stream handover module and the second stream handover module according to the judged result that described judge module sends.
4. supply system according to claim 3 is characterized in that: the running parameter of pump is an operating current in the described detection device.
5. supply system according to claim 3, it is characterized in that: the described first stream handover module has first port that is communicated with described pipeline, be communicated with the second extraneous port and be communicated with the 3rd port of described pump, and described the 3rd port optionally is communicated with first port or second port.
6. supply system according to claim 3, it is characterized in that: the described second stream handover module has five-port that is communicated with the 4th extraneous port, the described pipeline of connection and the 6th port that is communicated with described pump, and described the 6th port optionally is communicated with the 4th port or five-port.
7. supply system according to claim 3 is characterized in that: the described first stream handover module and/or the second stream handover module adopt three-way valve.
8. the detecting method of a line clogging, it is characterized in that: described detecting method may further comprise the steps:
Record the running parameter of pump, the upstream connecting tube of described pump;
Obtain the flow of the fluid in the described pipeline according to described running parameter;
Judge according to the flow of the fluid in the pipeline that receives whether described pipeline stops up.
9. detecting method according to claim 8 is characterized in that: according to described running parameter and utilize power and the mapping relations of flow obtain the flow of described pipeline inner fluid.
10. detecting method according to claim 8 is characterized in that: judge according to the flow of described pipeline inner fluid and the ability to work of described pump whether described pipeline stops up.
11. the Supply Method of a fluid is characterized in that, described Supply Method is:
Provide as the arbitrary described fluid feed system of claim 3 to 7;
Under the effect of pump, fluid passes through to flow to the external world behind described pipeline, the first stream handover module, pump and the second stream handover module, with accommodating fluid;
In above-mentioned work, application rights requires 8 described detecting methods to judge whether described pipeline stops up;
If judged result is for stopping up, control module is controlled the described first stream handover module and the second stream handover module, flow to the pipeline of the described first stream handover module upstream after making extraneous fluid by the described first stream handover module, pump and the second stream handover module, clear up the inside of described pipeline.
12. detecting method according to claim 11 is characterized in that: according to described running parameter and utilize power and the mapping relations of flow obtain the flow of described pipeline inner fluid.
13. detecting method according to claim 11 is characterized in that: judge according to the flow of described pipeline inner fluid and the ability to work of described pump whether described pipeline stops up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597387 CN102182929B (en) | 2010-12-10 | 2010-12-10 | Device and method for detecting pipeline blockage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010597387 CN102182929B (en) | 2010-12-10 | 2010-12-10 | Device and method for detecting pipeline blockage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102182929A true CN102182929A (en) | 2011-09-14 |
| CN102182929B CN102182929B (en) | 2013-02-20 |
Family
ID=44569192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010597387 Expired - Fee Related CN102182929B (en) | 2010-12-10 | 2010-12-10 | Device and method for detecting pipeline blockage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182929B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822095A (en) * | 2012-11-19 | 2014-05-28 | 中国石油天然气股份有限公司 | Method and device for predicting ice blockage formation of natural gas conveying pipeline |
| CN104214520A (en) * | 2014-08-28 | 2014-12-17 | 武汉光谷节能技术有限公司 | District cooling and heating transportation and distribution pipe network health check system |
| CN104295907A (en) * | 2014-08-12 | 2015-01-21 | 上海中联重科桩工机械有限公司 | System and method for detecting pipeline blockage position |
| CN104959237A (en) * | 2015-07-08 | 2015-10-07 | 福州大学 | Intelligent unblocking device |
| CN105302169A (en) * | 2014-07-29 | 2016-02-03 | 盛美半导体设备（上海）有限公司 | Flow control method |
| CN105757435A (en) * | 2016-05-10 | 2016-07-13 | 苏州道众机械制造有限公司 | Inductive oil tube connector |
| CN107225166A (en) * | 2017-05-22 | 2017-10-03 | 广东美的暖通设备有限公司 | Pipeline fitting shaping is with surveying stifled system and its control method |
| CN108601965A (en) * | 2016-01-28 | 2018-09-28 | 德国美力有限两合公司 | Spraying fire-extinguishing apparatus |
| CN109780449A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of apparatus and method detecting natural gas line ice blocking position |
| CN109882738A (en) * | 2019-03-07 | 2019-06-14 | 常州富兴机电有限公司 | A kind of electromotor cooling system fault detection means and method |
| CN110685120A (en) * | 2018-07-05 | 2020-01-14 | 青岛海尔滚筒洗衣机有限公司 | Automatic feeding control method of clothes treating agent of clothes treating equipment |
| CN110988274A (en) * | 2019-12-27 | 2020-04-10 | 深圳市无眼界科技有限公司 | Method and device for detecting air passage blockage of pump-suction type gas detector |
| CN112128485A (en) * | 2020-09-28 | 2020-12-25 | 湛江市长合环保科技有限公司 | Butt joint pipeline convenient to overhaul, disassemble and assemble for water treatment |
| CN113958576A (en) * | 2021-09-22 | 2022-01-21 | 无锡威顺煤矿机械有限公司 | Spraying device for emulsion tank and using method |
| CN114470570A (en) * | 2022-03-01 | 2022-05-13 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
| CN118190529A (en) * | 2024-05-15 | 2024-06-14 | 宁波华仪宁创智能科技有限公司 | Liquid sampling method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09228964A (en) * | 1996-02-26 | 1997-09-02 | Nikkiso Co Ltd | Unfoaming treatment device |
| CN1688872A (en) * | 2002-10-07 | 2005-10-26 | 瓦格纳报警和安全系统有限公司 | Device for the determination of flow parameters for a fluid and method for operating such a device |
| WO2009053923A2 (en) * | 2007-10-23 | 2009-04-30 | Picca Automation A/S | Method and pump management system for optimizing the energy consumption in a fluid transporting pipe system with pumps |
| CN101639159A (en) * | 2008-07-30 | 2010-02-03 | 上海煤气第二管线工程有限公司 | Method for monitoring tube-cleaning state |
| CN201666457U (en) * | 2010-04-14 | 2010-12-08 | 山东华联矿业股份有限公司 | Antifreeze device for water seal pipeline |
| CN202040547U (en) * | 2010-12-10 | 2011-11-16 | 聚光科技(杭州)股份有限公司 | Pipe blockage detection device and supply system |
-
2010
- 2010-12-10 CN CN 201010597387 patent/CN102182929B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09228964A (en) * | 1996-02-26 | 1997-09-02 | Nikkiso Co Ltd | Unfoaming treatment device |
| CN1688872A (en) * | 2002-10-07 | 2005-10-26 | 瓦格纳报警和安全系统有限公司 | Device for the determination of flow parameters for a fluid and method for operating such a device |
| WO2009053923A2 (en) * | 2007-10-23 | 2009-04-30 | Picca Automation A/S | Method and pump management system for optimizing the energy consumption in a fluid transporting pipe system with pumps |
| CN101639159A (en) * | 2008-07-30 | 2010-02-03 | 上海煤气第二管线工程有限公司 | Method for monitoring tube-cleaning state |
| CN201666457U (en) * | 2010-04-14 | 2010-12-08 | 山东华联矿业股份有限公司 | Antifreeze device for water seal pipeline |
| CN202040547U (en) * | 2010-12-10 | 2011-11-16 | 聚光科技(杭州)股份有限公司 | Pipe blockage detection device and supply system |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822095A (en) * | 2012-11-19 | 2014-05-28 | 中国石油天然气股份有限公司 | Method and device for predicting ice blockage formation of natural gas conveying pipeline |
| CN105302169A (en) * | 2014-07-29 | 2016-02-03 | 盛美半导体设备（上海）有限公司 | Flow control method |
| CN104295907A (en) * | 2014-08-12 | 2015-01-21 | 上海中联重科桩工机械有限公司 | System and method for detecting pipeline blockage position |
| CN104295907B (en) * | 2014-08-12 | 2017-02-15 | 上海中联重科桩工机械有限公司 | System and method for detecting pipeline blockage position |
| CN104214520A (en) * | 2014-08-28 | 2014-12-17 | 武汉光谷节能技术有限公司 | District cooling and heating transportation and distribution pipe network health check system |
| CN104214520B (en) * | 2014-08-28 | 2017-12-15 | 武汉光谷节能技术有限公司 | District cooling and heating transmission and distribution network health check system |
| CN104959237A (en) * | 2015-07-08 | 2015-10-07 | 福州大学 | Intelligent unblocking device |
| CN108601965A (en) * | 2016-01-28 | 2018-09-28 | 德国美力有限两合公司 | Spraying fire-extinguishing apparatus |
| US10835771B2 (en) | 2016-01-28 | 2020-11-17 | Minimax GmnH & Co. KG | Mist extinguishing system |
| CN105757435A (en) * | 2016-05-10 | 2016-07-13 | 苏州道众机械制造有限公司 | Inductive oil tube connector |
| CN107225166A (en) * | 2017-05-22 | 2017-10-03 | 广东美的暖通设备有限公司 | Pipeline fitting shaping is with surveying stifled system and its control method |
| CN110685120A (en) * | 2018-07-05 | 2020-01-14 | 青岛海尔滚筒洗衣机有限公司 | Automatic feeding control method of clothes treating agent of clothes treating equipment |
| CN109780449A (en) * | 2018-12-26 | 2019-05-21 | 西安交通大学 | A kind of apparatus and method detecting natural gas line ice blocking position |
| CN109780449B (en) * | 2018-12-26 | 2020-03-17 | 西安交通大学 | Device and method for detecting ice blockage position of natural gas pipeline |
| CN109882738A (en) * | 2019-03-07 | 2019-06-14 | 常州富兴机电有限公司 | A kind of electromotor cooling system fault detection means and method |
| CN110988274A (en) * | 2019-12-27 | 2020-04-10 | 深圳市无眼界科技有限公司 | Method and device for detecting air passage blockage of pump-suction type gas detector |
| CN112128485A (en) * | 2020-09-28 | 2020-12-25 | 湛江市长合环保科技有限公司 | Butt joint pipeline convenient to overhaul, disassemble and assemble for water treatment |
| CN113958576A (en) * | 2021-09-22 | 2022-01-21 | 无锡威顺煤矿机械有限公司 | Spraying device for emulsion tank and using method |
| CN114470570A (en) * | 2022-03-01 | 2022-05-13 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
| CN114470570B (en) * | 2022-03-01 | 2024-05-31 | 哲弗智能系统（上海）有限公司 | Fire extinguishing system |
| CN118190529A (en) * | 2024-05-15 | 2024-06-14 | 宁波华仪宁创智能科技有限公司 | Liquid sampling method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102182929B (en) | 2013-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102182929B (en) | Device and method for detecting pipeline blockage | |
| CN202040547U (en) | Pipe blockage detection device and supply system | |
| CN112555689B (en) | Multi-sensing pipeline state intelligent monitoring device | |
| CN110762283B (en) | Intelligent air valve, monitoring system and intelligent air valve monitoring method | |
| CN211176339U (en) | Pipe explosion detection system | |
| CN201974404U (en) | Integrated multiple-gas detector | |
| CN211954538U (en) | Novel oil filter local alarm device | |
| CN109283297B (en) | Independent calibration sampling system for hydrogen online analysis | |
| CN106053756B (en) | A kind of control system for gas concentration detector | |
| CN204922520U (en) | Pipeline inspection device | |
| CN202066653U (en) | Automatic oil circuit leakage detection and control system of test bed of vehicle part | |
| CN106527512B (en) | A kind of control method of single-point monitoring gas concentration detector | |
| CN108398366B (en) | Comprehensive detection and analysis system and method for gas quality of compressed air of power plant | |
| CN109268691B (en) | System for automatically prejudging leakage of volatile chemical medium pipeline | |
| CN202533140U (en) | Reagent liquid level sensing device for blood analyzer | |
| CN213206743U (en) | Valve leakage monitoring device and valve | |
| CN211693747U (en) | Intelligent air valve and monitoring system | |
| CN203365459U (en) | Bidirectional wind speed and wind direction monitoring system | |
| CN209821181U (en) | Dissolved oxygen sensor test device | |
| CN208751622U (en) | A kind of medical sewage exhausting control system | |
| CN203232098U (en) | On-line conductivity detection device | |
| CN201974310U (en) | Automatic sampler capable of monitoring moisture content of crude oil online | |
| CN202281677U (en) | Detecting device of self-exhaust medical liquid filter | |
| CN111773023A (en) | Water channel emptying and drying device for otolaryngological comprehensive treatment table | |
| CN214538412U (en) | Pipeline air tightness detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |