CN202182777U - Pressure type fluid temperature sensing device - Google Patents
Pressure type fluid temperature sensing device Download PDFInfo
- Publication number
- CN202182777U CN202182777U CN2011202515358U CN201120251535U CN202182777U CN 202182777 U CN202182777 U CN 202182777U CN 2011202515358 U CN2011202515358 U CN 2011202515358U CN 201120251535 U CN201120251535 U CN 201120251535U CN 202182777 U CN202182777 U CN 202182777U
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- fluid
- temperature sensing
- sensing device
- pressure sensor
- fluid pressure
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Abstract
The utility model discloses a pressure type fluid temperature sensing device, which comprises a rigid thermal bulb (1) with built-in temperature sensing fluid, wherein the rigid thermal bulb (1) is communicated with a pressure sensing cavity (5) of a fluid pressure sensor (3) capable of outputting electrical signals through a connecting conduit (11). The fluid temperature sensing device is resistant to electromagnetic interference and suitable for measurement of inflammable explosive fluid, and can output the electrical signals and can be connected with a computer or a network to achieve remote control.
Description
Technical field
The utility model relates to a kind of pressure type flow temperature sensing device.
Background technology
The simplest method of the measurement of fluid temperature (F.T.) is to use the mercury thermometer measure.But it can't export electric signal, can not automatic data collection, can not be connected with computing machine or network, and realize remote monitoring.Can export electric signal, automatic data collection though adopt thermopair and RTD to measure fluid temperature (F.T.); But because probe itself is charged, there is potential safety hazard in inflammable and explosive fluid, probe also is subject to the environment electromagnetics interference simultaneously, influences the accuracy of measurement result..
The utility model content
The purpose of the utility model provides a kind of pressure type flow temperature sensing device, and the anti-electromagnetic interference (EMI) of this kind fluid temperature (F.T.) sensing device is suitable for the measurement of inflammable and explosive fluid; And can export electric signal, can be connected, realize remote monitoring with computing machine or network.
The technical matters that the utility model solves; The technical scheme that is adopted is: a kind of pressure type flow temperature sensing device, its composition is: the rigidity thermometer bulb of the interior dress temperature-sensitive fluid of sealing, rigidity thermometer bulb are communicated with the pressure-sensitive chamber of the fluid pressure sensor that can export electric signal through connecting duct.
The course of work and the principle of the utility model are:
The rigidity thermometer bulb is placed the fluid environment of dut temperature; Temperature-sensitive fluid (gas or liquid) in the thermometer bulb senses bag outer fluid temperature and can expand with heat and contract with cold and produce corresponding positive and negative pressure; This pressure is passed to the pressure-sensitive chamber of fluid pressure sensor through connecting duct; Fluid pressure sensor is measured the pressure in pressure-sensitive chamber and is exported electric signal; This output electric signal changes with the bag fluid pressure pro rata, and the bag fluid pressure changes with the outer detected fluid environment temperature of bag again pro rata, realizes the detection of thermometer bulb outer fluid environment temperature thus.
Compared with prior art, the beneficial effect of the utility model is:
One, this sensor can be exported electric signal, is convenient to be connected with computing machine or network, realizes remote monitoring.
Two, the fluid pressure sensor conduit that spatially is connected of thermometer bulb and employing electric quantity signal output is separated; The thermometer bulb that directly contacts with detected fluid during measurement is not charged; Higher anti-flaming, explosion-proof performance and security are arranged, be suitable for the measurement of inflammable and explosive fluid.
Three, thermometer bulb is to the non-galvanomagnetic effect of the sensitlzing effect of temperature, and anti-electromagnetic interference capability is strong, is suitable for using in the big environment of electromagnetic interference (EMI).
The internal diameter of above-mentioned connecting duct is 0.5-2.0mm.
Like this, connecting duct is actually kapillary, can effectively the pressure in the thermometer bulb be passed to the pressure-sensitive chamber; Simultaneously, can reduce the influence of thermometer bulb again because of heat conduction fluid pressure sensor.
Above-mentioned fluid pressure sensor is the silicon piezoresistance type fluid pressure sensor.
Above-mentioned fluid pressure sensor is the silicon capacitance fluid pressure sensor.
These two kinds of fluid pressure sensors are that microelectronic technique is made, and volume is little, and it is highly sensitive.Like this, can reduce the volume of whole instrument, and improve its measuring accuracy.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Description of drawings
Fig. 1 is the cross-sectional view of the pressure type flow temperature sensing device of the utility model embodiment one.
Fig. 2 is the cross-sectional view of the pressure type flow temperature sensing device of the utility model embodiment two.
Embodiment
Embodiment one
Fig. 1 illustrates; A kind of embodiment of the utility model is; A kind of pressure type flow temperature sensing device; Its composition is a kind of pressure type flow temperature sensing device, and its composition is: the rigidity thermometer bulb 1 of the interior dress temperature-sensitive fluid of sealing, rigidity thermometer bulb 1 are communicated with the pressure-sensitive chamber 5 of the fluid pressure sensor that can export electric signal 3 through connecting duct 11.
The internal diameter of this routine connecting duct 11 is 0.5-2.0mm.
This routine fluid pressure sensor 3 is the silicon piezoresistance type fluid pressure sensor.
Embodiment two
Fig. 2 illustrates, and this routine pressure type flow temperature sensing device 3 is basic identical with embodiment one, and different only is: this routine fluid pressure sensor 3 is the silicon capacitance fluid pressure sensor.
The rigidity thermometer bulb 1 of the utility model can be got well with conducting heat and the strong material of rigidity is processed, and like metals such as copper, stainless steel, aluminium, titanium, tungsten, or materials such as pottery, glass are processed.The temperature-sensitive fluid can be gases such as air, nitrogen, argon gas, also can be liquid such as fluorine Lyons, ether, chloromethanes.Connecting duct 11 available copper, stainless steel, titanium or glass etc. are processed.The fluid pressure sensor 3 of the utility model be except that being the above silicon piezoresistance type and silicon capacitance fluid pressure sensor, can also be variously can measure fluid (gas, liquid) pressure, and can export the pressure transducer of electric signal.
Claims (4)
1. pressure type flow temperature sensing device, its composition is: the rigidity thermometer bulb (1) of the interior dress temperature-sensitive fluid of sealing, rigidity thermometer bulb (1) are communicated with the pressure-sensitive chamber (5) of the fluid pressure sensor that can export electric signal (3) through connecting duct (11).
2. pressure type flow temperature sensing device according to claim 1 is characterized in that the internal diameter of described connecting duct (11) is 0.5～2.0mm.
3. pressure type flow temperature sensing device according to claim 1 is characterized in that said fluid pressure sensor (3) is the silicon piezoresistance type fluid pressure sensor.
4. pressure type flow temperature sensing device according to claim 1 is characterized in that described fluid pressure sensor (3) is the silicon capacitance fluid pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202515358U CN202182777U (en) | 2011-07-16 | 2011-07-16 | Pressure type fluid temperature sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202515358U CN202182777U (en) | 2011-07-16 | 2011-07-16 | Pressure type fluid temperature sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182777U true CN202182777U (en) | 2012-04-04 |
Family
ID=46175810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202515358U Expired - Lifetime CN202182777U (en) | 2011-07-16 | 2011-07-16 | Pressure type fluid temperature sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279057A (en) * | 2011-07-16 | 2011-12-14 | 西南交通大学 | Pressure type fluid temperature sensor |
-
2011
- 2011-07-16 CN CN2011202515358U patent/CN202182777U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279057A (en) * | 2011-07-16 | 2011-12-14 | 西南交通大学 | Pressure type fluid temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |