CN2191417Y - Static levelmeter - Google Patents
Static levelmeter Download PDFInfo
- Publication number
- CN2191417Y CN2191417Y CN 94225079 CN94225079U CN2191417Y CN 2191417 Y CN2191417 Y CN 2191417Y CN 94225079 CN94225079 CN 94225079 CN 94225079 U CN94225079 U CN 94225079U CN 2191417 Y CN2191417 Y CN 2191417Y
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- CN
- China
- Prior art keywords
- housing
- casing
- sensor
- liquid level
- static pressure
- 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.)
- Expired - Fee Related
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a static pressure type measuring apparatus for a liquid level in the field of industry. The static pressure type measuring apparatus for a liquid level is characterized in that a static pressure sensor 5 and an internal wiring 8 are encapsulated in a casing 2 with an epoxy resin seal body 4; the internal wiring 8 is led out of a protective casing pipe 1 which is integrally connected with the casing in a fusing mode from one end of the casing; a back pressure compensate air guiding pipe 9 is buried in the seal body 4 in advance, is connected with the sensor 5 and is led out of the casing 2 through the protective casing pipe 1; in order to prevent the part between the sensor 5 and the casing 2 from generating a crack or additional stress because of different temperature coefficients, a rubber elastic sealing layer 6 is arranged between the front part of the sensor 5 and the casing 2. The utility model has the advantages of simple structure, good tightness, easy correction and long service life. The utility model solves the problem existing in the prior art that a measuring apparatus is scraped because liquid leaks.
Description
The utility model relates to a kind of novel static pressure type liquid level emasuring device, particularly relates to industrial level gauging static pressure measurement device.
Known static pressure type liquid level emasuring device, all be that static pressure sensing and translation circuit thereof are encapsulated in the cylindrical shell of stainless steel garden, two parts before and after housing is divided into, wherein first half housing envelope has the printed circuit board (PCB) of pressure-sensing device and translation circuit, and the latter half housing is drawn plastic sheath or rubber sheath signal cable.Front and back two parts adopt thread connecting mode usually, all adopt rubber ring to compress sealing means between latter half housing and signal cable.Above-mentioned measurement mechanism is sunk in the fluid to be measured, and sensor is transformed to electric signal with the static pressure of experiencing, and conversion is finished measuring process for liquid level on Displaying Meter again.
Known static pressure type liquid level emasuring device, owing to adopting aforementioned structure to have following shortcoming:
1, sealing is poor, and two parts before and after housing is divided into have long potted line, particularly the signal cable extension relies on the screw thread differential to compress fully, after use a period of time, will produce O-ring seal elasticity variation, cable pressurized modification causes liquid to infiltrate inner and scraps.
2, adjustment inconvenience, circuit are returned to zero and the full scale adjustment, all must earlier measurement mechanism be proposed fluid to be measured, and the Stainless Steel Shell of outwarding winding just can be adjusted.Very inconvenient, aggravated the generation of seepage phenomenon simultaneously again.
3, can not use the standard method calibration: known various static pressure type liquid level emasuring devices, it only is one or several aperture that static pressure imports end, can't use standard method to import normal pressure and calibrate.
Order of the present utility model provides a kind of novel static pressure type device for measuring volumetric flow of fluid, and it can overcome the deficiency of known method, have simple in structure, long service life, advantage such as non-leakage, adjustment is convenient.
In order to realize the utility model above-mentioned purpose, make things convenient for adjustment static pressure type liquid level emasuring device, can be with original adjustment circuit part that is arranged in the sensor housing, in its housing, shift out the not end that is installed in the sensor signal cable, in the special-purpose water-proof formula shell of fluid to be measured container outside, accomplish to open at any time waterproof case its circuit part is adjusted.Housing one end of this sample measurement mechanism is provided with pressure guide hole, and its inside has only kept static pressure transducer and back panel wiring thereof, can adopt filler as packaging body with the sensor and back panel wiring, irritate and to exist in the housing, make that remaining space is full of packaging body in the housing.Above-mentioned back panel wiring can be drawn by the housing other end.This packaging body can adopt materials such as epoxy resin, pitch, paraffin wax, the fill orifice that is provided with by the housing suitable position injects in the housing, for guaranteeing this device operate as normal, sensor connects back panel wiring one end can be provided with back pressure compensation wireway, this wireway is embedded in the above-mentioned packaging body together with back panel wiring, passes protecting pipe and draws housing.
Owing to poured into packaging body in this device case, in order to prevent to produce crack or extra-stress because of temperature expansion coefficient is different between static pressure transducer and the housing, employing rubber is as elastic sealing layer between static pressure transducer front portion and housing.The sealing layer can be a sandwich construction.
The sensor back panel wiring and back pressure compensation wireway are arranged in the same protecting pipe, are drawn the outside of this measurement mechanism by protecting pipe.This protecting pipe and housing guide wire exit port contact site can adopt the method for welding, and both are become one.Also can directly protecting pipe and housing be made one.
The pressure guide hole of this device case is a female pressure guide hole of processing, when carrying out range check with normal pressure and adjusting, need only be with the tensimeter that has special threaded connector, and joint directly screwed in the pressure guide hole both can test.
The existing static pressure measurement device easy to leak problem of thoroughly having solved the utility model improves and has prolonged this measurement mechanism serviceable life, and have simple in structure, characteristics such as adjustment is convenient, and is non-leakage.Can substitute existing industrial static pressure type liquid level emasuring device fully.
Introduce specific embodiment of the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation.
In the present embodiment, housing 2 can adopt plastics to make, housing 2 one ends are processed with M10 * 1 internal thread pressure guide hole 7, in this housing 2 static pressure transducer 5 is housed, between the front portion of sensor 5 and the housing 2 caoutchouc elasticity sealant 6 is housed, back panel wiring 8 and back pressure compensation wireway 9 are connected sensor 5 one ends, pass protecting pipe 1 and draw housing 2 by the housing guide wire exit port, above-mentioned housing 2 can adopt two body structures, with sensor 5 sealants 6, after back panel wiring and back pressure compensation wireway installs, two body and function solvents are welded be integral again, by fill orifice 3 the epoxy encapsulation body is poured in the above-mentioned housing 2 at last.The end that this device adjustment circuit part is installed in back panel wiring 8 is assemblied in the outside waterproof case of tested container.
Claims (6)
1, a kind of static pressure type liquid level emasuring device, comprising that an end is provided with is equipped with static pressure transducer [5] in the housing of pressure guide hole [7] [2], the back panel wiring [8] of sensor [5] is drawn by housing [2] other end, it is characterized in that said static pressure transducer [5] and back panel wiring [8] adopt packaging body [4] to be potted in the housing [2].
2, liquid level emasuring device according to claim 1 is characterized in that between said sensor ［ 5 ］ front portion and the housing ［ 2 ］ rubber sealant ［ 6 ］ being housed.
3, liquid level emasuring device according to claim 2 is characterized in that said rubber sealant ［ 6 ］ adopts sandwich construction.
4, liquid level emasuring device according to claim 1 and 2, it is characterized in that said sensor ［ 5 ］ connects back pressure compensation wireway ［ 9 ］, this wireway ［ 9 ］ passes packaging body ［ 4 ］, and draws outside the housing ［ 2 ］ by the protecting pipe ［ 1 ］ of back panel wiring ［ 9 ］.
5,, it is characterized in that the protecting pipe ［ 1 ］ of said back panel wiring ［ 9 ］ and housing ［ 2 ］ welding are one according to claim 1 or 4 described liquid level emasuring devices.
6, liquid level emasuring device according to claim 1 is characterized in that the end that said housing ［ 2 ］ is equipped with sensor ［ 5 ］ offers tapped pressure guide hole ［ 7 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225079 CN2191417Y (en) | 1994-01-13 | 1994-01-13 | Static levelmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225079 CN2191417Y (en) | 1994-01-13 | 1994-01-13 | Static levelmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2191417Y true CN2191417Y (en) | 1995-03-08 |
Family
ID=33838346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225079 Expired - Fee Related CN2191417Y (en) | 1994-01-13 | 1994-01-13 | Static levelmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2191417Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312462C (en) * | 2004-12-31 | 2007-04-25 | 北京塞尔瑟斯仪表科技有限公司 | Two-wire system multiple sensors liquid level transmitting instrument |
| CN103471681A (en) * | 2013-09-29 | 2013-12-25 | 湖南宇航科技有限公司 | Capacitance type oil level sensor filling method |
| CN104132712A (en) * | 2014-07-17 | 2014-11-05 | 湖南宇航科技有限公司 | Method for pouring glue into capacitive water level sensor |
| CN105203188A (en) * | 2014-06-04 | 2015-12-30 | 中国石油化工股份有限公司 | Oil-water interface detector and oil tank liquid level meter calibrating device |
| CN107153038A (en) * | 2017-06-08 | 2017-09-12 | 铁道第三勘察设计院集团有限公司 | Stratum osmotic coefficient quickly determines probe and its application method |
| CN108871492A (en) * | 2018-07-13 | 2018-11-23 | 贵阳博烁科技有限公司 | A kind of protective device |
-
1994
- 1994-01-13 CN CN 94225079 patent/CN2191417Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312462C (en) * | 2004-12-31 | 2007-04-25 | 北京塞尔瑟斯仪表科技有限公司 | Two-wire system multiple sensors liquid level transmitting instrument |
| CN103471681A (en) * | 2013-09-29 | 2013-12-25 | 湖南宇航科技有限公司 | Capacitance type oil level sensor filling method |
| CN105203188A (en) * | 2014-06-04 | 2015-12-30 | 中国石油化工股份有限公司 | Oil-water interface detector and oil tank liquid level meter calibrating device |
| CN105203188B (en) * | 2014-06-04 | 2021-07-13 | 中国石油化工股份有限公司 | Oil-water interface detector and oil tank level gauge calibrating device |
| CN104132712A (en) * | 2014-07-17 | 2014-11-05 | 湖南宇航科技有限公司 | Method for pouring glue into capacitive water level sensor |
| CN107153038A (en) * | 2017-06-08 | 2017-09-12 | 铁道第三勘察设计院集团有限公司 | Stratum osmotic coefficient quickly determines probe and its application method |
| CN108871492A (en) * | 2018-07-13 | 2018-11-23 | 贵阳博烁科技有限公司 | A kind of protective device |
| CN108871492B (en) * | 2018-07-13 | 2020-10-02 | 贵阳博烁科技有限公司 | Protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |