CN107228743B - Online leak hunting device of trap based on density - Google Patents
Online leak hunting device of trap based on density Download PDFInfo
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- CN107228743B CN107228743B CN201710675916.0A CN201710675916A CN107228743B CN 107228743 B CN107228743 B CN 107228743B CN 201710675916 A CN201710675916 A CN 201710675916A CN 107228743 B CN107228743 B CN 107228743B
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- branch pipe
- detection device
- valve
- guide hole
- drain valve
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to an online drain detection device of a drain valve based on density, which comprises a condensate main pipe (100), a drain valve (200), an inlet valve (300), a drain detection device (400), a branch pipe system (500), an outlet valve (600) and a buzzer (700); the leakage detection device (400) is arranged on a bent head of the branch pipe system (500), the inlet valve (300) is arranged at the inlet of the branch pipe system (500), one end of the inlet valve is connected with the outlet of the drain valve (200), and the other end of the inlet valve is connected with the leakage detection device (400); the outlet valve (600) is arranged at the outlet of the branch pipe system (500), the drain valve (200) is positioned on the main condensate pipe (100), and the branch pipe system (500) is arranged on the main condensate pipe (100) at the downstream of the drain valve (200). The device utilizes the density difference between the steam and the condensed water to generate different buoyancy to drive the magnetic rod to enter the coil to generate unequal induction voltage and connect the buzzer for alarming, thereby breaking the limit that the temperature of the original condensed water and the steam at the same temperature can not be detected; the defect of unclear scaling of the existing glass sight glass is overcome; overcomes the defects of complex ultrasonic system, easy external interference and low precision.
Description
Technical Field
The invention relates to the field of spandex elastic fiber production, in particular to an online detection device for a drain valve.
Background
A large amount of steam is consumed in the production process of spandex and is used for heating equipment, and when the steam with condensed water enters the heating equipment, the heat transfer efficiency of the equipment is affected; when the condensed water with steam is formed after the heat exchange of the steam and the heating equipment enters the condensed water recovery system, steam waste is generated, and a pipeline is easily damaged by a pipeline water hammer;
the device is composed of a digital temperature sensor, a digital temperature signal collector, 485 communication cables, a light cat, an optical cable and a data processing computer, wherein the digital temperature sensor adopts DS18B20, a plurality of digital temperature sensors circumferentially arranged on the outer side of a steam-water pipeline of the same steam-water valve share one digital temperature signal collector, and the leakage level of the steam-water valve is subjected to fuzzy recognition by adopting a fuzzy pattern recognition principle according to the data of the temperature of the downstream wall surface of the steam-water valve and the change rate thereof. The above-mentioned online leakage monitoring limitation includes:
1. the main steam conveying pipeline forms a small amount of condensed water due to poor heat preservation, the temperature of the condensed water discharged by the drain valve is unchanged, and the temperature of the condensed water discharged by the drain valve is the same as that of the main steam, so that whether the drain valve leaks or not cannot be detected;
2. after the steam enters the heating equipment for heat exchange, when the heating equipment only absorbs the vaporization latent heat of the steam, the temperature of condensed water discharged out of the heating equipment is equal to the temperature of the steam, and the temperature outside the drain valve pipeline cannot be detected;
of course, in the prior art, a sight glass observation method is also provided, a glass sight glass is arranged on a rear pipeline of the drain valve to observe whether condensed water is provided with steam or not, but in actual use, the condition that the glass sight glass is easy to scale and fuzzy is difficult to judge the state of the drain valve is found; for example, the ultrasonic detection method is adopted, the system detection is easy to be interfered by external noise, the signal processing is complex, and the judgment precision is affected;
disclosure of Invention
Technical problems: the invention aims to overcome the defects and shortcomings, and provides an online leak detection device for a drain valve based on density. The device utilizes the density difference between the steam and the condensed water to generate different buoyancy under different densities to drive the magnetic rod to enter the coil to generate different induced voltages, is connected with the buzzer for alarming, calculates the steam leakage amount according to the sound of the buzzer, and overcomes the defect that the temperature of the original condensed water and the steam at the same temperature can not be detected; the defect of unclear scaling of the existing glass sight glass is overcome; overcomes the defects of complex ultrasonic system, easy external interference and low precision.
The technical scheme is as follows: in order to solve the technical problems, the invention provides an online leak detection device of a drain valve based on density, which comprises a condensate water main pipe, a drain valve, an inlet valve, a leak detection device, a branch pipe system, an outlet valve and a buzzer; the leakage detection device is arranged on the elbow of the branch pipe system, the inlet valve is arranged at the inlet of the branch pipe system, one end of the inlet valve is connected with the outlet of the drain valve, and the other end of the inlet valve is connected with the leakage detection device; the outlet valve is arranged at the outlet of the branch pipe system, the drain valve is positioned on the condensate main pipe, and the branch pipe system is arranged on the condensate main pipe at the downstream of the drain valve.
The leak detection device comprises a steady flow plate, a floating region, a guide hole floating block, a guide plate, a lifting shaft, a limiting block, a shell, a sealing cover, a magnetic rod and a coil; the magnetic rod is arranged in the hollow lifting shaft and is tightly pressed and sealed by the sealing cover; the lower part of the lifting shaft penetrates through the guide plate to be connected with the guide hole floating block, and the lifting shaft moves up and down along with the guide hole floating block; the limiting block is fixed in the middle of the lifting shaft; the coil is fixed at the outer periphery of the shell.
The guide hole floating block consists of a guide hole floating block shell, a guide hole floating block cavity and a plurality of symmetrically arranged guide holes; the guide hole floating block is fixed on the lifting shaft; the flow cross section area formed by the annular gap between the guide hole floating block and the pipeline is equal to the cross section area of the parallel pipes of the branch pipes.
The branch pipe system is arranged on a condensate water main pipe at the downstream of the drain valve and comprises a branch pipe inlet, a branch pipe straight section, a branch pipe elbow, a branch pipe parallel pipe, a branch pipe row pipe and a branch pipe outlet; the leakage detection device is inserted into the straight section of the branch pipe from the elbow of the branch pipe and is fixed on the elbow; the inlet valve is arranged at the inlet of the branch pipe, and the outlet valve is arranged at the outlet of the branch pipe.
The invention utilizes the characteristic that the density of steam and condensed water is different by thousands times, in particular: the fluid generates certain buoyancy to the guide hole floating block in the leak detection device through the branch system; when the condensed water contains a certain amount of steam, the density of the steam-water mixture is lower than that of the condensed water, the buoyancy is reduced, the guide hole floating block drives the lifting shaft to move downwards, the magnetic rod enters the coil, induced voltage is generated, and the buzzer is driven to alarm; the steam content in the condensed water is increased, the buoyancy is further reduced, the lifting shaft is further moved downwards, the magnetic rod further enters the coil, larger induction voltage is generated, the buzzer is driven to alarm the volume, and the steam content in the condensed water can be calculated according to the volume; breaks the limit that the temperature of the original condensed water and the steam can not be detected at the same temperature; the defect of unclear scaling of the existing glass sight glass is overcome; overcomes the defects of complex ultrasonic system, easy external interference and low precision.
The beneficial effects are that: the invention has the advantages that the structure is novel, the condensate water generates certain buoyancy to the guide hole floating block in the leak detection device through the branch system by utilizing the characteristic that the density of the steam is thousands times different from that of the condensate water; when the condensed water contains a certain amount of steam, the density of the steam-water mixture is lower than that of the condensed water, the buoyancy is reduced, the guide hole floating block drives the lifting shaft to move downwards, the magnetic rod enters the coil, induced voltage is generated, and the buzzer is driven to alarm; the steam content in the condensed water is increased, the buoyancy is further reduced, the lifting shaft is further moved downwards, the magnetic rod further enters the coil, larger induction voltage is generated, the buzzer is driven to alarm the volume, and the steam content in the condensed water can be calculated according to the volume; breaks the limit that the temperature of the original condensed water and the steam can not be detected at the same temperature; the defect of unclear scaling of the existing glass sight glass is overcome; overcomes the defects of complex ultrasonic system, easy external interference and low precision.
Drawings
FIG. 1 is a schematic diagram of an on-line leak detection device for a drain valve based on density;
FIG. 2 is a schematic view of the leak detection apparatus of FIG. 1;
FIG. 3 is a schematic illustration of the construction of the manifold system of FIG. 1;
FIG. 4 is a schematic view of the guide hole floating block of FIG. 2;
the method comprises the following steps:
condensate main pipe 100, drain valve 200, inlet valve 300, leak detection device 400, branch pipe system 500, outlet valve 600, buzzer 700;
a guide hole floating block housing 403.1, a guide hole floating block cavity 403.2, and a guide hole 403.3;
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The invention relates to an online leak detection device of a drain valve based on density, which comprises a condensate main pipe 100, a drain valve 200, an inlet valve 300, a leak detection device 400, a branch pipe system 500, an outlet valve 600 and a buzzer 700; the leak detection device 400 is arranged on a bend of the branch pipe system 500, the inlet valve 300 and the outlet valve 600 are arranged at the inlet and the outlet of the branch pipe system 500, and the branch pipe system 500 is arranged on the condensate main pipe 100 at the downstream of the drain valve 200;
the leak detection device 400 is installed on a elbow of a branch pipe system 500, and comprises a current stabilizer 401, a floating region 402, a guide hole floating block 403, a guide plate 404, a lifting shaft 405, a limiting block 406, a shell 407, a sealing cover 408, a magnetic rod 409 and a coil 410. The magnetic rod 409 is installed in the hollow lifting shaft 405 and is tightly pressed and sealed by the sealing cover 408; the guide hole floating block 403 is connected with the lifting shaft 405 to move up and down along with the guide hole floating block 403; the limiting block 406 is fixed on the lifting shaft 405, so that the guide hole floating block 403 moves up and down in the floating region 402 without collision with the current stabilizing plate 401 and the guide plate 404; the guide plate 404 ensures that the lifting shaft 405 moves freely and stably up and down in the shell 407; the coil 410 is fixed outside the housing 407;
the pilot hole slider 403 is composed of a pilot hole slider housing 403.1, a pilot hole slider cavity 403.2, and a plurality of pilot holes 403.3 arranged symmetrically. The guide hole floating block 403 is fixed on the lifting shaft 405 to move up and down in the floating region 402; the flow cross section formed by the guide holes 403.3 in the guide hole floating blocks 403 and the annular gaps between the guide hole floating blocks 403 and the pipelines is equal to the cross section of the parallel pipes of the branch pipe system 500, so that when fluid stably flows through the guide holes 403.3, no pressure difference exists between the upper and lower parts of the guide hole floating blocks, and the interference of the pressure on the leak detection device is eliminated;
the branch pipe system 500 is arranged on the condensate main pipe 100 downstream of the drain valve 200, and comprises a branch pipe inlet 501, a branch pipe straight section 502, a branch pipe elbow 503, a branch pipe parallel pipe 504, a branch pipe array pipe 505 and a branch pipe outlet 506. The leak detection device 400 is inserted into the straight section 502 of the branch pipe from the branch pipe elbow 503 and is fixed on the elbow 503; the inlet valve 300 is arranged at the branch pipe inlet 501, the outlet valve 600 is arranged at the branch pipe outlet 506, and the leak detection device 400 can be overhauled on line through a valve switch;
the specific working process is as follows: the leak detection device 400 is arranged in the branch pipe system 500, the branch pipe system is arranged on the condensate main pipe 100 at the downstream of the drain valve 200, the guide hole floating block 403 in the leak detection device can freely lift in the floating zone 402 of the straight section 502 of the branch pipe, the guide hole floating block 403 drives the magnetic rod 409 in the lifting shaft 405 to move up and down, and the larger the magnetic rod 409 enters the coil 410, the larger the induced voltage is generated, and the louder the alarm sound of the connected buzzer 700 is.
When the steam completely forms condensed water to enter the main pipe 100, part of the condensed water enters the branch pipe system 500, the buoyancy generated by the condensed water on the guide hole floating block 403 is larger than the dead weight of the guide hole floating block 403, the lifting shaft 405 ascends, the magnetic rod 409 in the lifting shaft 405 is outside the coil 410, no induction voltage is generated, and the connected buzzer is silent;
when the steam does not completely form condensed water and the mixture formed by the steam and the condensed water enters the main pipe 100 at the same time, part of the steam-water mixture enters the branch pipe system 500, the density of the steam-water mixture is lower than that of the condensed water, the buoyancy generated by the steam-water mixture to the guide hole floating block 403 is lower than the dead weight of the guide hole floating block, the lifting shaft 405 starts to descend from a high point to the balance state of the guide hole floating block 403, the magnetic rod 409 in the lifting shaft 405 enters the coil 410 to generate a certain amount of induced voltage, and the connected buzzer sounds to give an alarm. As the steam content in the steam-water mixture is larger, the density of the steam-water mixture is lower, the guide hole floating block 403 is lowered, the magnetic rods 409 in the lifting shaft 405 enter the coil 410 more, the generated induced voltage is larger, and the alarm sound of the connected buzzer is louder; when the drain valve 200 is completely disabled and steam directly enters the main pipe 100, part of steam enters the branch pipe system 500, the steam density is lowest, the guide hole floating block 403 descends to the lowest point under the action of steam buoyancy and dead weight, the inner 409 of the lifting shaft 405 completely enters the coil 410, the induction voltage is maximum, and the alarm sound of the connected buzzer is maximum.
Claims (4)
1. The online leak detection device for the drain valve based on the density is characterized by comprising a condensate main pipe (100), the drain valve (200), an inlet valve (300), a leak detection device (400), a branch pipe system (500), an outlet valve (600) and a buzzer (700); the leakage detection device (400) is arranged on a bent head of the branch pipe system (500), the inlet valve (300) is arranged at the inlet of the branch pipe system (500), one end of the inlet valve is connected with the outlet of the drain valve (200), and the other end of the inlet valve is connected with the leakage detection device (400); the outlet valve (600) is arranged at the outlet of the branch pipe system (500), the drain valve (200) is positioned on the main condensate pipe (100), and the branch pipe system (500) is arranged on the main condensate pipe (100) at the downstream of the drain valve (200).
2. The online leak detection device for the drain valve based on the density according to claim 1, wherein the leak detection device (400) comprises a current stabilizer (401), a floating zone (402), a guide hole floating block (403), a guide plate (404), a lifting shaft (405), a limiting block (406), a shell (407), a sealing cover (408), a magnetic rod (409) and a coil (410); wherein, the magnetic rod (409) is arranged in the hollow lifting shaft (405) and is tightly pressed and sealed by the sealing cover (408); the lower part of the lifting shaft (405) passes through the guide plate (404) to be connected with the guide hole floating block (403), and the lifting shaft (405) moves up and down along with the guide hole floating block (403); the limiting block (406) is fixed in the middle of the lifting shaft (405); the coil (410) is fixed to the outer periphery of the housing (407).
3. The online leak detection device of the drain valve based on the density according to claim 2, wherein the guide hole floating block (403) consists of a guide hole floating block shell (403.1), a guide hole floating block cavity (403.2) and a plurality of guide holes (403.3) which are symmetrically arranged; the guide hole floating block (403) is fixed on the lifting shaft (405); the flow cross-sectional area of the guide hole (403.3) in the guide hole floating block (403) and the annular gap between the guide hole floating block (403) and the pipeline is equal to the cross-sectional area of the branch parallel pipe (504).
4. The online leak detection device of the drain valve based on the density according to claim 1, wherein the branch pipe system (500) is installed on the condensate main pipe (100) downstream of the drain valve (200), and comprises a branch pipe inlet (501), a branch pipe straight section (502), a branch pipe elbow (503), a branch pipe parallel pipe (504), a branch pipe row pipe (505) and a branch pipe outlet (506); the leakage detection device (400) is inserted into the straight section (502) of the branch pipe from the branch pipe elbow (503) and is fixed on the elbow (503); the inlet valve (300) is mounted at the manifold inlet (501) and the outlet valve (600) is mounted at the manifold outlet (506).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675916.0A CN107228743B (en) | 2017-08-09 | 2017-08-09 | Online leak hunting device of trap based on density |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710675916.0A CN107228743B (en) | 2017-08-09 | 2017-08-09 | Online leak hunting device of trap based on density |
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| CN107228743A CN107228743A (en) | 2017-10-03 |
| CN107228743B true CN107228743B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710675916.0A Active CN107228743B (en) | 2017-08-09 | 2017-08-09 | Online leak hunting device of trap based on density |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112378594B (en) * | 2020-10-19 | 2023-12-08 | 东风小康汽车有限公司重庆分公司 | Air leakage detection device |
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| JP2003130289A (en) * | 2001-10-29 | 2003-05-08 | Tlv Co Ltd | Steam trap monitoring device |
| WO2009057846A1 (en) * | 2007-11-02 | 2009-05-07 | Hyeon Sook Baek | Energy-saving device |
| KR101570659B1 (en) * | 2014-09-11 | 2015-11-23 | 오순웅 | Apparatus checking life steam leak of steam trap |
| CN105221920A (en) * | 2015-11-12 | 2016-01-06 | 英侨机械制造有限公司 | Intelligence Automatic steam trap Trap |
| CN205981573U (en) * | 2016-08-25 | 2017-02-22 | 国电大渡河大岗山水电开发有限公司 | Be used for power station air cooler monitoring devices that leaks |
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| US4764024A (en) * | 1987-05-04 | 1988-08-16 | The United States Of America As Represented By The United States Department Of Energy | Steam trap monitor |
| JPH0893995A (en) * | 1994-09-20 | 1996-04-12 | Toshiba Corp | Monitoring device of drain trap for steam piping |
| CN2742270Y (en) * | 2004-10-14 | 2005-11-23 | 葛建培 | Inductive type electronic steam trap |
| US8050875B2 (en) * | 2006-12-26 | 2011-11-01 | Rosemount Inc. | Steam trap monitoring |
| CN105965732B (en) * | 2016-07-06 | 2019-01-18 | 中策橡胶集团有限公司 | Tyre vulcanization hot plate steam pipework draining system and its application |
| CN207114108U (en) * | 2017-08-09 | 2018-03-16 | 浙江华峰氨纶股份有限公司 | A kind of online leak-checking apparatus of drain valve based on density |
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2017
- 2017-08-09 CN CN201710675916.0A patent/CN107228743B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130289A (en) * | 2001-10-29 | 2003-05-08 | Tlv Co Ltd | Steam trap monitoring device |
| WO2009057846A1 (en) * | 2007-11-02 | 2009-05-07 | Hyeon Sook Baek | Energy-saving device |
| KR101570659B1 (en) * | 2014-09-11 | 2015-11-23 | 오순웅 | Apparatus checking life steam leak of steam trap |
| CN105221920A (en) * | 2015-11-12 | 2016-01-06 | 英侨机械制造有限公司 | Intelligence Automatic steam trap Trap |
| CN205981573U (en) * | 2016-08-25 | 2017-02-22 | 国电大渡河大岗山水电开发有限公司 | Be used for power station air cooler monitoring devices that leaks |
Non-Patent Citations (1)
| Title |
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| 带监测装置蒸汽疏水阀的开发与研究;陈帅;徐岩;;阀门(第06期);全文 * |
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Address after: No. 1788, Dongshan Economic Development Zone, Ruian, Wenzhou, Zhejiang, 326200 Applicant after: Huafeng Chemical Co.,Ltd. Address before: No. 1788, Dongshan Economic Development Zone, Ruian, Wenzhou, Zhejiang, 326200 Applicant before: ZHEJIANG HUAFENG SPANDEX Co.,Ltd. |
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