CN2856942Y - High temp pressure guiding level transmitter - Google Patents
High temp pressure guiding level transmitter Download PDFInfo
- Publication number
- CN2856942Y CN2856942Y CN 200520078874 CN200520078874U CN2856942Y CN 2856942 Y CN2856942 Y CN 2856942Y CN 200520078874 CN200520078874 CN 200520078874 CN 200520078874 U CN200520078874 U CN 200520078874U CN 2856942 Y CN2856942 Y CN 2856942Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- level transmitter
- liquid level
- temperature
- connecting pipe
- 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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Abstract
The utility model discloses a high-temperature pressure-transmitting type liquid level transmitter for solving the problem that the high-temperature is not easy to measure directly in the current liquid level transmitter. The high-temperature pressure-transmitting type liquid level transmitter includes a casing, a junction box having a connecting line inlet, a sensor chip, and the junction box is connected with the casing; the sensor chip where a silicon sense organ and a pressure transmitting medium are packeted is positioned in the casing; a isolating film is positioned under the silicon sense organ. The high-temperature pressure-transmitting type liquid level transmitter also includes a pressure transmitting medium, a protection element of the welding point of the pressure transmitting pipe, an air collecting cylinder, a fixed flange; one end of the pressure transmitting pipe is welded to the casing through the fixed flange, and the other end is welded with the air collecting cylinder on the thread of which is positioned with the protection element of the welding point of the pressure transmitting pipe. As a result, the direct contact between the silicon sense organ and the measured high-pressure medium is avoided in the high-temperature pressure-transmitting type liquid level transmitter and the liquid level can be measured directly in high temperature and the cost is low.
Description
Technical field:
The utility model relates to a kind of pressure unit of measuring high-temp liquid, a kind of specifically pressure unit that utilizes the ordinary silicon sensitive element to measure high-temp liquid.
Background technology:
Shown in Fig. 2 is the structural representation of existing throw-in type fluid level transmitter.At present, generally be used for the throw-in type fluid level transmitter of measuring liquid level, sensor core is arranged in the housing, is packaged with silicon-sensitive element and pilot medium in the sensor core, is provided with isolation diaphragm below the silicon-sensitive element.Sensor core and circuit sealing by connecting the lead of shell, are directly put into the shell of belt sensor core body and circuit in the liquid that needs to measure in shell; It can only be measured and be lower than 80 ℃ liquid, measure high-temperature medium, have only the high-quality circuit of employing and sensor core, but also can only measure about 100 ℃, at this moment, its stability, precision all can variation, be prone to fault, and general circuit can not work long hours under the environment about 100 ℃.
The utility model content
The purpose of this utility model be to provide a kind of can be under hot environment the cheap again high temperature pilot formula fluid level transmitter of measuring liquid level accurately, can not directly measure the problem of high-temp liquid to solve existing fluid level transmitter.
The utility model comprises housing, has terminal box, sensor core that the hole is introduced in wiring, and terminal box is connected with housing; Sensor core is arranged in the housing, is packaged with silicon-sensitive element and pilot medium in the sensor core, is provided with isolation diaphragm below the silicon-sensitive element; It comprises that also connecting pipe, connecting pipe pad protect part, gas collecting jar with ground-on cover plate, mounting flange, and an end of connecting pipe is by mounting flange and housing welding, and the other end and gas collecting jar with ground-on cover plate welding are equipped with the connecting pipe pad and protect part on the screw thread of gas collecting jar with ground-on cover plate.
The utility model utilizes air pilot principle, gas collecting jar with ground-on cover plate, connecting pipe are put in the liquid of measurement, by the gas in the pressure guiding device pressure is passed to the silicon-sensitive element, avoided the silicon-sensitive element to contact with the direct of tested high-temperature medium, and circuit and sensor core need not be placed in the liquid of measurement, so the energy measurement high-temp liquid.It has solved the not difficult problem of energy measurement high-temperature medium of common sensor effectively.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of existing throw-in type fluid level transmitter.
Embodiment
The Reference numeral implication is as follows: 1-wiring introducing hole, 2-terminal box, 3-housing, 4-isolation diaphragm, 5-mounting flange, 6-connecting pipe, 7-connecting pipe pad protect part, 8-gas collecting jar with ground-on cover plate, 9-silicon-sensitive element, 10-sensor core, 11-pilot medium
As shown in Figure 1, the utility model comprises housing 3, has terminal box 2, sensor core 10 that hole 1 is introduced in wiring, and terminal box 2 usefulness screw threads are connected with housing 3; Sensor core 10 is arranged in the housing 3, is packaged with silicon-sensitive element 9 and pilot medium 11 in the sensor core 10, is provided with isolation diaphragm 4 below silicon-sensitive element 9; It comprises that also connecting pipe 6, connecting pipe pad protect part 7, gas collecting jar with ground-on cover plate 8, isolation diaphragm 4, mounting flange 5, one end of connecting pipe 6 is by mounting flange 5 and housing 3 welding, and the other end and gas collecting jar with ground-on cover plate 8 welding, the connecting pipe pad is installed on the screw thread of gas collecting jar with ground-on cover plate 8 protects part 7, to guarantee connecting pipe in packing, transportation, weld seam does not crack when crooked.Silicon-sensitive element 9 utilizes the gas in connecting pipe 6 and the gas collecting jar with ground-on cover plate 8 to measure high-temperature medium indirectly.Pilot medium 11 is housed in the sensor core 10.
Shown in Fig. 2 is the structural representation of existing throw-in type fluid level transmitter.
When the utility model is measured, gas collecting jar with ground-on cover plate 8 is put in the medium, the pressure compression gas collecting jar with ground-on cover plate 8 of medium and the gas (gas volume of gas collecting jar with ground-on cover plate and connecting pipe changes very little during high temperature) in the connecting pipe 6, gas is transferring the pressure to isolation diaphragm 4, being delivered to silicon-sensitive element 9 by pilot medium 11 again gets on, after silicon-sensitive element 9 was transformed into electric signal with physical quantity, signal processing circuit in terminal box again was transformed into the canonical measure signal of 4～20mA.
Claims (1)
1, a kind of high temperature pilot formula fluid level transmitter comprises housing, has terminal box, sensor core that the hole is introduced in wiring, and terminal box is connected with housing; Sensor core (10) is arranged in the housing (3), is packaged with silicon-sensitive element (9) and pilot medium (11) in the sensor core (10), is provided with isolation diaphragm (4) in silicon-sensitive element (9) below; It is characterized in that: it comprises that also connecting pipe (6), connecting pipe pad protect part (7), gas collecting jar with ground-on cover plate (8), mounting flange (5), one end of connecting pipe (6) is by mounting flange (5) and housing (3) welding, and the other end and gas collecting jar with ground-on cover plate (8) welding is equipped with the connecting pipe pad and protects part (7) on the screw thread of gas collecting jar with ground-on cover plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078874 CN2856942Y (en) | 2005-06-03 | 2005-06-03 | High temp pressure guiding level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078874 CN2856942Y (en) | 2005-06-03 | 2005-06-03 | High temp pressure guiding level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856942Y true CN2856942Y (en) | 2007-01-10 |
Family
ID=37600246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078874 Expired - Fee Related CN2856942Y (en) | 2005-06-03 | 2005-06-03 | High temp pressure guiding level transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2856942Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267555A (en) * | 2013-05-09 | 2013-08-28 | 唐山现代工控技术有限公司 | Pressure-type water level measuring method and pressure-type water level measuring device |
| CN104154966A (en) * | 2014-07-25 | 2014-11-19 | 武汉飞恩微电子有限公司 | Liquid level sensor based on pressure detection |
| 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 |
-
2005
- 2005-06-03 CN CN 200520078874 patent/CN2856942Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267555A (en) * | 2013-05-09 | 2013-08-28 | 唐山现代工控技术有限公司 | Pressure-type water level measuring method and pressure-type water level measuring device |
| CN103267555B (en) * | 2013-05-09 | 2016-08-03 | 唐山现代工控技术有限公司 | A kind of pressure type water level measurement method and device |
| CN104154966A (en) * | 2014-07-25 | 2014-11-19 | 武汉飞恩微电子有限公司 | Liquid level sensor based on pressure detection |
| CN104154966B (en) * | 2014-07-25 | 2017-09-26 | 武汉飞恩微电子有限公司 | Liquid level sensor based on pressure detecting |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANSHUI HUATIAN SENSOR CO., LTD. Free format text: FORMER OWNER: HUATIAN MICRO-ELECTRONIC CO., LTD., TIANSHUI Effective date: 20110712 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110712 Address after: 741000 No. 14 Shuangqiao Road, Gansu, Tianshui Patentee after: Tianshui Huatian Sensor Co., Ltd. Address before: 741000 No. 14 Shuangqiao Road, Gansu, Tianshui Patentee before: Huatian Micro-electronic Co., Ltd., Tianshui |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070110 Termination date: 20130603 |