CN201364211Y - Locomotive pressure transmitter - Google Patents
Locomotive pressure transmitter Download PDFInfo
- Publication number
- CN201364211Y CN201364211Y CNU2008201672538U CN200820167253U CN201364211Y CN 201364211 Y CN201364211 Y CN 201364211Y CN U2008201672538 U CNU2008201672538 U CN U2008201672538U CN 200820167253 U CN200820167253 U CN 200820167253U CN 201364211 Y CN201364211 Y CN 201364211Y
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- CN
- China
- Prior art keywords
- head
- head assembly
- shell
- locomotive
- pressure transmitter
- 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 - Lifetime
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Abstract
A locomotive pressure transmitter comprises a head component, a signal-processing circuit, an electric output connector, a mechanical connector and a shell, and the head component is provided with a pressure-sensitive element, which is a ceramic sensitive element. The utility model has the following advantages: (1) since the ceramic sensor is adopted, the ceramic sensor does not have the transfer effect of liquid and any filling liquid, so no pollution is generated, moreover, the electric insulation degree is high, the output signal is strong, and the long-term stability is good; (2) since the electric output connector is connected with the middle of the shell, the length of the whole pressure transmitter is reduced, and therefore the pressure transmitter can be used in a shorter space; (3) because the head of the head component is connected with a cushioning screw rod, the buffer screw rod has a cushioning effect to prevent the head from being damaged by overlarge impact.
Description
Technical field
The utility model relates to a kind of pressure unit.
Background technology
Sensor is the device that a kind of measurand is converted to a kind of available output signal, pressure transducer is exactly a kind of device that pressure signal is converted to current signal or voltage signal, and pressure unit then is to utilize pressure transducer the ultra-weak electronic signal of sensor output or nonstandard conversion of signals to be become the device of general standard electric signal.
Existing locomotive pressure unit mainly is made of head assembly, signal processing circuit, electric out splice going splice, mechanical interface and the shell etc. of the oil-filled sensitive element of semiconductor silicon pressure, its mechanical interface directly links to each other with head assembly, electric interfaces is connected shell one end, therefore following deficiency is arranged: 1, owing to adopt liquid semiconductor silicon pressure-sensing device, therefore environment is easily polluted, use limited, and cost height.2, electric out splice going splice is connected shell one end, so entire product is longer, can not be used in the narrow space.3, mechanical interface is connected on the head assembly, so using time tool interface directly links to each other with use occasion, easily is hit and damages, nor easily connect.
The utility model content
Technical problem to be solved in the utility model is to overcome the above-mentioned deficiency of prior art and a kind of pressure unit is provided, make its measuring accuracy height, pollution-free, easy to connect, length is little.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
The locomotive pressure unit comprises head assembly, signal processing circuit, electric out splice going splice, mechanical interface and the shell of being with pressure-sensing device, and it is characterized in that: described pressure-sensing device is ceramic sensitive element.
Above-mentioned electric out splice going splice is connected the shell middle part.
Above-mentioned electric out splice going splice is the aviation quick plug.
The head of above-mentioned head assembly connects mechanical interface after connecting the buffering screw rod again.
Compared with prior art, advantage of the present utility model is:
1, owing to adopt ceramic sensor element, the transfer function that it does not have liquid does not have any filling liquid, can not produce pollution, and the electric insulation degree is good, and output signal is strong, and long-time stability are good.
2, because electric out splice going splice is connected the shell middle part, reduced the length of whole pressure unit, therefore can be used in the short space.
3, because the head of head assembly connects the buffering screw rod, therefore can play buffer action, prevent that head from damaging because of impulse force is excessive.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the structural representation of the utility model embodiment head assembly.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the locomotive pressure unit comprises that signal processing circuit, head assembly 2, electric out splice going splice 4, mechanical interface and shell 1 constitute.
As shown in Figure 2, above-mentioned head assembly 2 comprises: head connecting thread 21,22, O RunddichtringO 23, sensitive element 24, packing ring 25, pressing plate 26, printed board assembly 29, lead 20, sensitive element 24 is fixed on head 21 by pressing plate 26 by screw 27, and printed board assembly 29 is fixed on the pressing plate 26 by screw 28.
Above-mentioned head assembly 2 is installed on the shell 1 by screw 9, and lead 41 directly links to each other with wiring board 29.
Above-mentioned electric out splice going splice 4 is an aviation plug, is fixed on the middle part of shell 1 by screw 5, can save installing space like this.
Above-mentioned mechanical interface is the connecting thread 22 of head assembly head and nut 3 is installed, the head end connecting thread 22 that nut 3 is received head assembly 2 is installed, the connection when being used to measure.
Above-mentioned mechanical interface also comprises pipe connecting thread 21 and collar nut 6, buffering screw rod 8 and pipe adapter 9, and collar nut 6 is connected to the head end connecting thread 21 of head assembly, and built-in buffering screw rod 8 links to each other with pipe adapter 9.
Above-mentioned pressure unit by pipe adapter 9 directly and device end weld or directly be connected to device end by its head threads.When adopting pipe adapter 9 directly and device end welding fixedly the time, need pass through snap ring fixed housing 1.Directly be connected to device end when adopting, need to play the fixed product effect by nut 3 being installed with product and tightly on equipment by its head threads 22.
Claims (5)
1, locomotive pressure unit comprises head assembly, signal processing circuit, electric out splice going splice, mechanical interface and the shell of being with pressure-sensing device, and it is characterized in that: described pressure-sensing device is ceramic sensitive element.
2, locomotive pressure unit according to claim 1 is characterized in that: described electric out splice going splice is connected the shell middle part.
3, locomotive pressure unit according to claim 2 is characterized in that: described mechanical interface is the connecting thread of head assembly head and nut is installed, the connecting thread that nut is received head assembly is installed.
4, according to claim 1 or 2 or 3 described locomotive pressure units, it is characterized in that: the head of described head assembly connects mechanical interface after connecting the buffering screw rod again.
5, locomotive pressure unit according to claim 4 is characterized in that: described mechanical interface is a collar nut, and collar nut is connected to the head end connecting thread of head assembly, and built-in buffering screw rod links to each other with pipe adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201672538U CN201364211Y (en) | 2008-10-31 | 2008-10-31 | Locomotive pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201672538U CN201364211Y (en) | 2008-10-31 | 2008-10-31 | Locomotive pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201364211Y true CN201364211Y (en) | 2009-12-16 |
Family
ID=41474879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201672538U Expired - Lifetime CN201364211Y (en) | 2008-10-31 | 2008-10-31 | Locomotive pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201364211Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901600A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Automotive sensor |
| CN109520667A (en) * | 2018-11-02 | 2019-03-26 | 湖北康利安动力科技有限公司 | A kind of contactless pressure explosion-proof sensor |
-
2008
- 2008-10-31 CN CNU2008201672538U patent/CN201364211Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901600A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Automotive sensor |
| CN109520667A (en) * | 2018-11-02 | 2019-03-26 | 湖北康利安动力科技有限公司 | A kind of contactless pressure explosion-proof 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: 20091216 |