CN201903493U - Electromechanically-integrated density transmitter - Google Patents
Electromechanically-integrated density transmitter Download PDFInfo
- Publication number
- CN201903493U CN201903493U CN2010206648320U CN201020664832U CN201903493U CN 201903493 U CN201903493 U CN 201903493U CN 2010206648320 U CN2010206648320 U CN 2010206648320U CN 201020664832 U CN201020664832 U CN 201020664832U CN 201903493 U CN201903493 U CN 201903493U
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- pressure transducer
- circuit board
- electronic circuit
- pressure
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Abstract
The utility model belongs to the field of transmitters, and particularly relates to an electromechanically-integrated density transmitter. The electromechanically-integrated density transmitter comprises a pressure interface (1), a spring tube (2), a transmission link (3), a transmission gear (4), a pointer (5), a pressure sensor (6), an electronic circuit board (7), a pressure guide pipe (9), a sampling air chamber (11) and a pressure sensor base (12); the pressure interface (1) and a port of the pressure guide pipe (9) are communicated with the sampling air chamber (11) respectively, and another port of the pressure guide pipe (9) is communicated with the pressure sensor base (12); one end of the spring tube (2) is fixedly communicated with the sampling air chamber (11), and the other end of the spring tube (2) is fixedly connected with one end of the transmission link (3); and a signal transmission port of the pressure sensor (6) is connected with a signal transmission port of the electronic circuit board (7). The electromechanically-integrated density transmitter not only can be used as the pointer for indication, output the alarm and lock contacts, but also can output an analog current signal and has the advantages of good sealing performance, high insulation performance and strong anti-interference performance.
Description
Technical field
The utility model belongs to the transmitter field, relates in particular to a kind of electromechanical integration density transmitter.
Background technology
High-voltage switch gear is one of visual plant of power plant, transformer station, in order safely and reliably electric power to be delivered to national grid, must guarantee normal, the reliability services of equipment work such as high-voltage switch gear.In order to guarantee the high-voltage switch gear operate as normal, must guarantee high-voltage switch gear protection gas SF
6Density be not less than a certain numerical value, therefore, need be to high-voltage switch gear SF
6The density of gas is monitored in real time, at SF
6In the measurement of gas density, traditional method often adopts pointer instrument, fetch data by the field personnel manual read, its shortcoming is that accuracy of measurement is poor, reading is very inconvenient, and may produce wrong reading owing to staff's carelessness, also be not easy to the centralized management of measurement data simultaneously.If reveal, density is not reduced to alarm set point, and the staff just can't find to reveal, and also is not easy to write down the time and the process of its leakage, may cause serious industrial accident when serious.
At present, the electronic type SF that some can online detection has also appearred on the market
6The gas density transmitter, but there is not local indication, can not output alarm and the contact point signal of locking, the structure of transmitter only adopts the connected mode of screw thread and cushion rubber, do not adopt special method, the sealing of transmitter can not guarantee, and for the high-voltage switch gear measuring instrument, the sealing of transmitter is again vital; In density transmitter without any the design of anti-electromagnetic interference (EMI), and the use scene of density transmitter is the environment of 220KV or 500KV UHV (ultra-high voltage), the scene exists various electromagnetic interference (EMI) and static, electromagnetic interference (EMI) in the site environment and static can be by the housings of transmitter, directly affact sensor, thereby sensor is broken.
Summary of the invention
The utility model be intended to overcome the deficiencies in the prior art part and provide a kind of can either local pointer indication, output alarm, locking contact, can export the electromechanical integration density transmitter of analog current signal, good airproof performance, insulativity height, strong interference immunity again.
For achieving the above object, the utility model is achieved in that a kind of electromechanical integration density transmitter, and it comprises: pressure interface, bourdon tube, kinematic link, the transmission gear that is assigned in the kinematic link end, pointer, pressure transducer, electronic circuit board, connecting pipe, sampling air chamber and pressure transducer seat; Described pressure transducer places on the sensor holder; Described pressure interface communicates with the sampling air chamber respectively with the port of connecting pipe; The another port of described connecting pipe communicates with the pressure transducer seat; One end of described bourdon tube fixedly communicates with the sampling air chamber, and an end of its other end and kinematic link is fixedly connected; The other end of described kinematic link is through the end gear engagement of transmission gear and pointer; The signal transmission port of described pressure transducer connects the signal transmission port of electronic circuit board.
As a kind of preferred version, electronic circuit board described in the utility model comprises stimulating module, amplifier and V/I modular converter; The stimulating module port of the excitation termination electronic circuit board of described pressure transducer; The port of the output termination V/I modular converter of described pressure transducer; Described pressure transducer is converted to voltage signal with the pressure of pressure interface gas to be measured, transfers to the V/I modular converter again and converts current signal to; Described stimulating module through amplifier to the stable pumping signal of pressure transducer.
As another kind of preferred version, electronic circuit board described in the utility model also comprises temperature-compensation circuit, force value when the force value under the arbitrary temp being compensated for as 20 ℃ (being commonly referred to the P20 value) by temperature-compensation circuit, and integrated density transmitter is directly exported the P20 value; The port of temperature compensated circuit of the port of described stimulating module and amplifier joins.
Further, the utility model is provided with aperture in the bottom of described pressure transducer seat, and described connecting pipe communicates with the cavity of pressure transducer through described aperture.
Further, electronic circuit board described in the utility model also comprises immunity module; The port of the port of described immunity module and V/I modular converter joins.
The utility model good airproof performance, strong interference immunity, response speed is fast, and compared with prior art, characteristics of the present utility model are in particular in: 1, pressure transducer, temperature-compensation circuit, V/I change-over circuit, constant-current circuit, mu balanced circuit are housed in pointer density meter.Make integrated density transmitter can either local pointer indication, output alarm, locking contact, can export analog current signal again, realize SF
6The teletransmission of gas density has increased the function of transmitter widely.
2, on electronic circuit board, comprise the design of anti-jamming circuit, improve the electromagnetic compatibility and the antijamming capability of transmitter.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.Protection domain of the present utility model will not only be confined to the statement of following content.
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Fig. 2 is the integrated density transmitter electronic circuit of a utility model block diagram.
Fig. 3 is the design frame chart of the integrated density transmitter immunity module of the utility model.
Among Fig. 1: 1 is pressure interface; 2 is bourdon tube; 3 is kinematic link; 4 is transmission gear; 5 is pointer; 6 is pressure transducer; 7 is electronic circuit board; 8 is shell; 9 is connecting pipe; 10 is signal wire interface; 11 are the sampling air chamber; 12 is the pressure transducer seat.
Embodiment
As shown in the figure, the electromechanical integration density transmitter, it comprises: pressure interface 1, bourdon tube 2, kinematic link 3, the transmission gear 4 that is assigned in kinematic link 3 ends, pointer 5, pressure transducer 6, electronic circuit board 7, connecting pipe 9, sampling air chamber 11 and pressure transducer seat 12; Described pressure transducer 6 places on the sensor holder 12; Described pressure interface 1 communicates with sampling air chamber 11 respectively with the port of connecting pipe 9; The another port of described connecting pipe 9 communicates with pressure transducer seat 12; One end of described bourdon tube 2 fixedly communicates with sampling air chamber 11, and an end of its other end and kinematic link 3 is fixedly connected; The other end of described kinematic link 3 is through the end gear engagement of transmission gear 4 with pointer 5; The signal transmission port of described pressure transducer 6 connects the signal transmission port of electronic circuit board 7.
The utility model is provided with aperture in the bottom of described pressure transducer seat 12, and described connecting pipe 9 communicates through the cavity of described aperture with pressure transducer 6.
Referring to shown in Figure 1, when concrete the making, the utility model comprises: pressure interface 1, bourdon tube 2, kinematic link 3, transmission gear 4, pointer 5, pressure transducer 6, electronic circuit board 7, shell 8, connecting pipe 9, signal wire interface 10, sampling air chamber 11 and pressure transducer seat 12.The utility model electronic circuit board 7 comprises constant-current circuit, mu balanced circuit, V/I modular converter, temperature-compensation circuit and anti-jamming circuit (referring to Fig. 2 and Fig. 3); The utility model pressure interface 1 and connecting pipe 9, sampling air chamber 11 SF that is connected
6Gas is introduced in the sampling air chamber 11 by pressure interface 1, by connecting pipe 9 gaseous tension signal one tunnel is sent in the bourdon tube 2, and drive kinematic link 3 and transmission gear 4 motions drive pointers 5 motions thereby bourdon tube is under pressure; Connecting pipe transmits another road pressure signal to pressure transducer 6.
The excitation end of pressure transducer 6 described in the utility model is connected with electronic circuit board 7, and the output terminal of pressure transducer is connected by the input end of the V/I change-over circuit on signal wire and the electronic circuit board.Pressure transducer 6 described in the utility model is converted to voltage signal with the pressure of the gas to be measured of pressure interface 1, transfers to the V/I modular converter again and converts current signal to.
Constant-current circuit described in the utility model, mu balanced circuit are connected and are used on the electronic circuit board 7 giving 6 one stable pumping signals of pressure transducer by operational amplifier.
Immunity module described in the utility model is connected on the electronic circuit board 7.The port of the port of immunity module described in the utility model and V/I modular converter joins.
Connecting pipe one end described in the utility model is connected with the gas sampling air chamber 11 of pointer density meter by the mode of welding, and the other end is connected with pressure transducer seat 12 by the mode of welding.
In the utility model housing, pressure transducer is housed, comprises temperature compensation network, V/I modular converter, constant-current circuit, mu balanced circuit.Can either local pointer indication, output alarm, locking contact, can export analog current signal again, realize SF
6The teletransmission of gas density.
The utility model improves the electromagnetic compatibility and the antijamming capability of transmitter in the described design that comprises anti-jamming circuit on electronic circuit board.
Be with being appreciated that, more than about specific descriptions of the present utility model, only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (5)
1. electromechanical integration density transmitter, it is characterized in that, comprising: pressure interface (1), bourdon tube (2), kinematic link (3), the transmission gear (4) that is assigned in kinematic link (3) end, pointer (5), pressure transducer (6), electronic circuit board (7), connecting pipe (9), sampling air chamber (11) and pressure transducer seat (12); Described pressure transducer (6) places on the sensor holder (12); Described pressure interface (1) communicates with sampling air chamber (11) respectively with the port of connecting pipe (9); The another port of described connecting pipe (9) communicates with pressure transducer seat (12); One end of described bourdon tube (2) fixedly communicates with sampling air chamber (11), and an end of its other end and kinematic link (3) is fixedly connected; The other end of described kinematic link (3) is through the end gear engagement of transmission gear (4) with pointer (5); The signal transmission port of described pressure transducer (6) connects the signal transmission port of electronic circuit board (7).
2. electromechanical integration density transmitter according to claim 1 is characterized in that: described electronic circuit board (7) comprises stimulating module, amplifier and V/I modular converter; The stimulating module port of the excitation termination electronic circuit board (7) of described pressure transducer (6); The port of the output termination V/I modular converter of described pressure transducer (6); Described pressure transducer (6) is converted to voltage signal with the pressure of pressure interface (1) gas to be measured, transfers to the V/I modular converter again and converts current signal to; Described stimulating module is given the stable pumping signal of pressure transducer (6) through amplifier.
3. electromechanical integration density transmitter according to claim 2 is characterized in that: described electronic circuit board (7) also comprises temperature-compensation circuit; The port of temperature compensated circuit of the port of described stimulating module and amplifier joins.
4. electromechanical integration density transmitter according to claim 3 is characterized in that: the bottom at described pressure transducer seat (12) is provided with aperture, and described connecting pipe (9) communicates through the cavity of described aperture with pressure transducer (6).
5. electromechanical integration density transmitter according to claim 4 is characterized in that: described electronic circuit board (7) also comprises immunity module; The port of the port of described immunity module and V/I modular converter joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206648320U CN201903493U (en) | 2010-12-17 | 2010-12-17 | Electromechanically-integrated density transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206648320U CN201903493U (en) | 2010-12-17 | 2010-12-17 | Electromechanically-integrated density transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903493U true CN201903493U (en) | 2011-07-20 |
Family
ID=44274087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206648320U Expired - Lifetime CN201903493U (en) | 2010-12-17 | 2010-12-17 | Electromechanically-integrated density transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081027A (en) * | 2010-12-17 | 2011-06-01 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
-
2010
- 2010-12-17 CN CN2010206648320U patent/CN201903493U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081027A (en) * | 2010-12-17 | 2011-06-01 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
| CN102081027B (en) * | 2010-12-17 | 2012-10-10 | 沈阳仪表科学研究院 | Mechatronics density transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110720 Effective date of abandoning: 20121010 |