CN103267555A - Pressure-type water level measuring method and pressure-type water level measuring device - Google Patents
Pressure-type water level measuring method and pressure-type water level measuring device Download PDFInfo
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- CN103267555A CN103267555A CN2013101668909A CN201310166890A CN103267555A CN 103267555 A CN103267555 A CN 103267555A CN 2013101668909 A CN2013101668909 A CN 2013101668909A CN 201310166890 A CN201310166890 A CN 201310166890A CN 103267555 A CN103267555 A CN 103267555A
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Abstract
The invention relates to a pressure-type water level measuring method and a pressure-type water level measuring device, and belongs to the technical field of water conservancy measurement. The technical scheme includes that a pressure cover (1) is of a hollow tube structure, the lower end of the pressure cover (1) is open, the upper end of the pressure cover (1) is sealed by a pressure sensor (2), a pressed portion of the pressure sensor is communicated with the inside of the pressure cover, and the pressure cover and the pressure sensor form a sealed container with a lower-end opening; the pressure sensor is connected with a waterproof cable (3), and the waterproof cable is connected with an intelligent instrument (4); and measured medium water is separated from the pressure sensor by compressed air, the pressure of air inside the pressure cover varies along with variation of the depth of the water, and the variational pressure is detected by the pressure sensor and is transmitted to the intelligent instrument via the waterproof cable, so that numerical values of the depth of the water are acquired. The pressure-type water level measuring method and the pressure-type water level measuring device have the advantages that the pressure-type water level measuring method and the pressure-type water level measuring device can be used for measuring water levels of heavily silt-carrying river channels such as the Yellow River, and also can be used for measuring water levels of complicated water such as saline-alkali underground water, and the pressure cover can prevent blockage and performance drifting of the pressure sensor.
Description
Technical field
The present invention relates to a kind of pressure type water level measurement method and device, belong to the water conservancy field of measuring technique.
Background technology
At present; in the water conservancy industry; level measuring often adopts throw-in type water level meter; the problem that background technology exists is: the pressure transducer of its equipment is submerged in the measured WATER AS FLOW MEDIUM; owing to can contain silt usually in the WATER AS FLOW MEDIUM; particularly be applied to the occasion of agricultural irrigation; the perhaps relatively poor occasion that has influence on pressure transducer pressure membrane characteristic of water quality; can cause the obstruction of sensor or the drift of constant property; make that the user needs often to calibrate water level or can't obtain measurement data at all, thereby seriously perplex use and management department.
Summary of the invention
The object of the invention provides a kind of pressure type water level measurement method and device, adopts gas can cause that measured medium water and the pressure transducer of problem isolate, thereby fundamentally avoids solving the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of pressure type level measurement device comprises pressure shield, pressure transducer, water-proof cable and intelligence instrument; Pressure shield is the blank pipe structure, and the lower end is opened wide, upper end adopts pressure sensor shutoff, and the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument; The part of described pressure shield, pressure transducer and water-proof cable immerses in the measured medium water, in pressure shield inside, the lower end is the measured medium water that enters, the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the compression air spaced intermediate, variation along with the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure that changes is detected by pressure transducer, be delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value.
The relative position of pressure shield, pressure transducer and water-proof cable is pressure shield bottom, and the pressure transducer shutoff of the upper end of pressure shield up is water-proof cable and intelligence instrument again.
Described pressure transducer can be absolute pressure formula or non-absolute pressure formula.
Described water-proof cable inside can comprise snorkel or not comprise snorkel.
Described pressure transducer, water-proof cable are techniques well known.
A kind of pressure type water level measurement method comprises following steps:
1. adopt the pressure type level measurement device to measure, this device comprises pressure shield, pressure transducer, water-proof cable and intelligence instrument, pressure shield is the blank pipe structure, the lower end is opened wide, upper end adopts pressure sensor shutoff, the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument;
2. the relative position of pressure shield, pressure transducer and water-proof cable is pressure shield bottom, and the upper end of pressure shield up is water-proof cable with the airtight shutoff of pressure transducer again;
3. pressure shield, pressure transducer and water-proof cable are dipped into when surveying in the WATER AS FLOW MEDIUM, and the order of entry is: at first the pressure shield lower end begins, secondly pressure transducer, water-proof cable at last;
4. after the entry of pressure shield lower end, part water enters in the pressure shield, because the upper end of pressure shield is by the pressure transducer shutoff, make the air of pressure shield inside to escape, in pressure shield inside, the lower end is the measured medium water that enters, and the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the air that compresses spaced intermediate; Along with the variation of the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure of variation is detected by pressure transducer, is delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value;
5. in pressure shield inside, the lower end is the measured medium water that enters, the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the compression air spaced intermediate, therefore water quality can not have influence on pressure transducer, and the inner most spaces of the pressure shield air that is compressions, and the space pressure cover that the pressure transducer front end of comparing is very little is more difficult blocked.
Described pressure shield is a metal tube or nonmetallic pipe.
The invention has the beneficial effects as follows: 1. can be used for the level measuring in high concentration of sediment river course, for example the Yellow River level measuring; 2. the level measuring that can be used for complicated water quality for example contains the underground water level measurement of saline alkali; 3. the pressure shield structure is avoided obstruction and the performance drift of pressure transducer.
Description of drawings
Accompanying drawing 1 is embodiment of the invention synoptic diagram;
Among the figure: pressure shield 1, pressure transducer 2, water-proof cable 3, intelligence instrument 4.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described by embodiment.
A kind of pressure type level measurement device comprises pressure shield 1, pressure transducer 2, water-proof cable 3 and intelligence instrument 4; Pressure shield is the blank pipe structure, and the lower end is opened wide, upper end adopts pressure sensor shutoff, and the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument; The part of described pressure shield, pressure transducer and water-proof cable immerses in the measured medium water, in pressure shield inside, the lower end is the measured medium water that enters, the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the compression air spaced intermediate, variation along with the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure that changes is detected by pressure transducer, be delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value.
The relative position of pressure shield, pressure transducer and water-proof cable is pressure shield bottom, and the pressure transducer shutoff of the upper end of pressure shield up is water-proof cable and intelligence instrument again.
Described pressure transducer can be absolute pressure formula or non-absolute pressure formula.
Described water-proof cable inside can comprise snorkel or not comprise snorkel.
A kind of pressure type water level measurement method comprises following steps:
1. adopt the pressure type level measurement device to measure, this device comprises pressure shield 1, pressure transducer 2, water-proof cable 3 and intelligence instrument 4, pressure shield is the blank pipe structure, the lower end is opened wide, upper end adopts pressure sensor shutoff, the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument;
2. the relative position of pressure shield, pressure transducer and water-proof cable is pressure shield bottom, and the upper end of pressure shield up is water-proof cable with the airtight shutoff of pressure transducer again;
3. pressure shield, pressure transducer and water-proof cable are dipped into when surveying in the WATER AS FLOW MEDIUM, and the order of entry is: at first the pressure shield lower end begins, secondly pressure transducer, water-proof cable at last;
4. after the entry of pressure shield lower end, part water enters in the pressure shield, because the upper end of pressure shield is by the pressure transducer shutoff, make the air of pressure shield inside to escape, along with the variation of the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure that changes is detected by pressure transducer, be delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value;
5. in pressure shield inside, the lower end is the measured medium water that enters, the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the compression air spaced intermediate, therefore water quality can not have influence on pressure transducer, and the inner most spaces of the pressure shield air that is compressions, and the space pressure cover that the pressure transducer front end of comparing is very little is more difficult blocked.
Described pressure shield is a metal tube or nonmetallic pipe.
Claims (8)
1. pressure type water level measurement method is characterized in that comprising following steps:
1. adopt the pressure type level measurement device to measure, this device comprises pressure shield (1), pressure transducer (2), water-proof cable (3) and intelligence instrument (4), pressure shield is the blank pipe structure, the lower end is opened wide, upper end adopts pressure sensor shutoff, the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument;
2. the relative position of pressure shield, pressure transducer and water-proof cable is pressure shield bottom, and the upper end of pressure shield up is water-proof cable with the airtight shutoff of pressure transducer again;
3. pressure shield, pressure transducer and water-proof cable are dipped into when surveying in the WATER AS FLOW MEDIUM, and the order of entry is: at first the pressure shield lower end begins, secondly pressure transducer, water-proof cable at last;
4. after the entry of pressure shield lower end, part water enters in the pressure shield, because the upper end of pressure shield is by the pressure transducer shutoff, make the air of pressure shield inside to escape, in pressure shield inside, the lower end is the measured medium water that enters, and the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the air that compresses spaced intermediate; Along with the variation of the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure of variation is detected by pressure transducer, is delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value.
2. pressure type water level measurement method according to claim 1 is characterized in that pressure shield (1) is a metal tube or nonmetallic pipe.
3. pressure type water level measurement method according to claim 1 and 2 is characterized in that pressure transducer (2) is absolute pressure type or non-absolute pressure type.
4. pressure type water level measurement method according to claim 1 and 2 is characterized in that water-proof cable (3) inside comprises airway or do not comprise airway.
5. a pressure type level measurement device is characterized in that: comprise pressure shield (1), pressure transducer (2), water-proof cable (3) and intelligence instrument (4); Pressure shield is the blank pipe structure, and the lower end is opened wide, upper end adopts pressure sensor shutoff, and the part in compression of pressure transducer and pressure shield internal communication, pressure shield and pressure transducer constitute the closed container of a lower ending opening together; Pressure transducer is connected with water-proof cable, and water-proof cable connects intelligence instrument; The part of described pressure shield, pressure transducer and water-proof cable immerses in the measured medium water, in pressure shield inside, the lower end is the measured medium water that enters, the centre is compressed air, be pressure transducer topmost, measured medium water and pressure transducer by the compression air spaced intermediate, variation along with the depth of water, cause the pressure of the air of pressure shield inside to change thereupon, the pressure that changes is detected by pressure transducer, be delivered to intelligence instrument by water-proof cable, thus the depth of water numerical value that arrives, just water level value.
6. pressure type level measurement device according to claim 5 is characterized in that pressure shield (1) is a metal tube or nonmetallic pipe.
7. according to claim 5 or 6 described pressure type level measurement devices, it is characterized in that pressure transducer (2) is absolute pressure type or non-absolute pressure type.
8. according to claim 5 or 6 described pressure type level measurement devices, it is characterized in that water-proof cable (3) inside comprises airway or do not comprise airway.
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| CN201310166890.9A CN103267555B (en) | 2013-05-09 | 2013-05-09 | A kind of pressure type water level measurement method and device |
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| CN201310166890.9A CN103267555B (en) | 2013-05-09 | 2013-05-09 | A kind of pressure type water level measurement method and device |
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| CN103267555B CN103267555B (en) | 2016-08-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197602A (en) * | 2016-07-27 | 2016-12-07 | 江苏方天电力技术有限公司 | A kind of contactless Chemical cleaning liquid level emasuring device and measuring method |
| CN106404124A (en) * | 2016-06-06 | 2017-02-15 | 广东工业大学 | Liquid level sensor |
| CN110849438A (en) * | 2018-08-21 | 2020-02-28 | 江苏华淼电子科技有限公司 | Closed type uplifting pressure measuring structure |
| CN112729425A (en) * | 2020-11-26 | 2021-04-30 | 天地科技股份有限公司 | Underground open channel monitoring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547417A (en) * | 1978-10-02 | 1980-04-03 | Anritsu Corp | Water level indicator |
| CN2856942Y (en) * | 2005-06-03 | 2007-01-10 | 天水华天微电子有限公司 | High temp pressure guiding level transmitter |
| CN202757663U (en) * | 2012-06-25 | 2013-02-27 | 唐山现代工控技术有限公司 | Pressure-type water level measuring device |
| CN203203658U (en) * | 2013-05-09 | 2013-09-18 | 唐山现代工控技术有限公司 | Pressure-type water-level measuring device |
-
2013
- 2013-05-09 CN CN201310166890.9A patent/CN103267555B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5547417A (en) * | 1978-10-02 | 1980-04-03 | Anritsu Corp | Water level indicator |
| CN2856942Y (en) * | 2005-06-03 | 2007-01-10 | 天水华天微电子有限公司 | High temp pressure guiding level transmitter |
| CN202757663U (en) * | 2012-06-25 | 2013-02-27 | 唐山现代工控技术有限公司 | Pressure-type water level measuring device |
| CN203203658U (en) * | 2013-05-09 | 2013-09-18 | 唐山现代工控技术有限公司 | Pressure-type water-level measuring device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404124A (en) * | 2016-06-06 | 2017-02-15 | 广东工业大学 | Liquid level sensor |
| CN106197602A (en) * | 2016-07-27 | 2016-12-07 | 江苏方天电力技术有限公司 | A kind of contactless Chemical cleaning liquid level emasuring device and measuring method |
| CN110849438A (en) * | 2018-08-21 | 2020-02-28 | 江苏华淼电子科技有限公司 | Closed type uplifting pressure measuring structure |
| CN112729425A (en) * | 2020-11-26 | 2021-04-30 | 天地科技股份有限公司 | Underground open channel monitoring device |
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| CN103267555B (en) | 2016-08-03 |
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Denomination of invention: Pressure-type water level measuring method and pressure-type water level measuring device Effective date of registration: 20171019 Granted publication date: 20160803 Pledgee: China Merchants Bank, Limited by Share Ltd, Tangshan branch Pledgor: Tangshan Xiandai Engineering Controlling Technology Co., Ltd. Registration number: 2017990000970 |
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