CN201060078Y - Intelligent condenser type differential pressure cell fixed connection structure - Google Patents
Intelligent condenser type differential pressure cell fixed connection structure Download PDFInfo
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- CN201060078Y CN201060078Y CNU200720096861XU CN200720096861U CN201060078Y CN 201060078 Y CN201060078 Y CN 201060078Y CN U200720096861X U CNU200720096861X U CN U200720096861XU CN 200720096861 U CN200720096861 U CN 200720096861U CN 201060078 Y CN201060078 Y CN 201060078Y
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- circuit board
- display module
- shell
- differential pressure
- main circuit
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Abstract
The utility model relates to equipment or an instrument which is used to measure two or more than two pressure differences, in particular to an intelligent capacitance type differential pressure transmitter fixed connecting structure, and the utility model solves the problems of more oscillating circuit board separating elements, poor stability and anti-interference ability and inconvenient connection of the circuit of a main circuit board and a display module circuit board in the prior intelligent capacitance type differential pressure transmitter. The technical proposal comprises a T-shaped tube shell which is formed at the appearance and is provided with a transmitter part, a display window cover which is connected by bolts with one end of a horizontal tube shell, an end cover which is connected by bolts with the other end of the horizontal tube shell, a sensitive element and a temperature sensor which are arranged in a vertical tube shell between a higher pressure tube interface and a lower pressure tube interface, and a circular main circuit board and a display module circuit board which are connected by screw poles and bolts in the clapboard screw holes in the horizontal tube shell, connectors and wires between the connectors which are used to connect the main circuit board and the display module circuit board circuit. The utility model has the advantages of reduced number of transmitter circuit boards, well connection of the circuit and convenient detection and debugging of the transmitter as an integral body.
Description
Technical field
The present invention relates to measure the equipment or the instrument of two or more pressure difference values, particularly a kind of intelligent capacitance differential pressure cell fixed connection structure that is applied to industries such as oil, chemical industry, metallurgy, environmental protection.
Background technology
Differential pressure transmitter is to detect, transmit, show, pilot-gas, liquid, the device of acting force between materials such as solid, the production link that it converts pressure signal to electric signal and is used to measure automatically and controls automatically, force balance type is generally arranged, condenser type, strain-type, piezoelectric type, pressure resistance type etc., compare with force balance type, condenser type does not have gear train, compact dimensions, good anti-vibration, the precision height, zeroing and accent range do not disturb mutually, recently obtained to use widely, at present China Xi'an, Beijing has all produced and has comprised pressure, differential pressure, absolute pressure, the kind and the head pressures such as differential pressure transmitter of band evolution, specification products such as high static pressure.
Its theory diagram of intelligent differential pressure transmitter of existing band HART bus is shown in Fig. 1,3,5, and its structure is by T shape shell 6; Be installed on the lower vertical shell 6 of T shape pipe " in, the sensitive element 10 that the two sides is connected with high and low pressure pipe fitting interface 11,9 (two cell structure capacitance differential pressure transducers); Be installed in the lower vertical shell of T shape pipe, by oscillator ZH, detuner JT, oscillating controller ZK, the oscillating circuit board unit 5 that the I/V converter is formed; Be installed on the upper level shell 6 of T shape pipe ' in, by microprocessor MP (MSP430F427), digital communication ST (chip HT2012PL and peripheral circuit), the transmitter main circuit board unit 4 that D/A signal converter (AD421), power unit are formed and constitute by the display module circuit board unit 3 that display module, button are formed.
Its main circuit board unit 4 and be formed with the spiral shell public affairs with an end by the display module circuit board unit 3 that display module, button are formed, in addition end double-screw bolt 13 laminations that are formed with screw are bolted in the screw 16 of horizontal shell internal partition of transmitter, and the circuit of its main circuit board unit and the display module circuit board unit be made up of display module, button is directly pegged graft with the connector 14 that is fixed in main circuit board and display module circuit board.
Place the temperature sensor 12 in the same housing to transfer in the microprocessor A/D of main circuit board unit 4 interface with sensitive element by oscillating circuit board.
But, there is following problems in existing capacitance differential pressure cell: A. circuit complexity, the oscillating circuit board unit that is made of oscillator, oscillating controller, detuner, I/V converter just need tens discrete components, cause that welding is complicated, volume is big, antijamming capability and reliability are relatively poor.B. the easy temperature influence job insecurity of the capacitor charge and discharge in its sensitive element.C. circuit is higher to the temperature profile and the accuracy requirement of element, has increased the workload of buying, incoming inspection.D. circuit debugging is relatively more difficult.E. the 32KHZ high frequency that existing oscillator uses is bigger to influence circuit, therefore makes circuit antijamming capability, PCB layout require to improve.F. its main circuit board and display module circuit board are formed with the spiral shell public affairs with an end, in addition the end double-screw bolt lamination that is formed with screw is bolted in the screw of horizontal shell internal partition of transmitter, circuit is directly pegged graft with the connector that is fixed in main circuit board and display module circuit board on it, plug, the installation of socket relative position of therefore working as connector are unpunctual, often make plug, the bad grafting of socket or the back loose contact of pegging graft, in addition, this rigid grafting also is not easy to display module circuit board and main circuit board and deviates from shell and carry out whole detection and debugging.
Summary of the invention
The present invention proposes, discloses a kind of intelligent capacitance differential pressure cell fixed connection structure for solving the above-mentioned problems in the prior art, it has cancelled the oscillating circuit board unit, utilize the circuit structure of measuring capacitor discharge time to measure sensitive element voltage variation capacitance value, and then measure pressure difference, control production automatically automatically.
Technical scheme of the present invention includes: the T shape shell that forms appearance, installation transmitter parts; Be bolted in the display window lid of horizontal shell one end; Be bolted in the horizontal shell end cap of end in addition; Be installed on sensitive element and temperature sensor in the vertical shell between the high and low pressure interface tube; Be bolted in the circular main circuit board and the display module circuit board of horizontal shell internal partition screw with double-screw bolt, screw lamination; Feature is: be equipped with on its main circuit board: the sensitive element metering circuit that is connected in sensitive element output; Receive the microprocessor unit of metering circuit output; Be connected in the D/A change-over circuit of microprocessor unit output; The digital communication circuit; Be connected in 4-20mA power circuit, the digital communication circuit of the output of D/A change-over circuit, the display module that is connected in microprocessor unit be installed on its display module circuit board and adjust push-button unit.
Its main circuit board and display module circuit board are formed with the spiral shell public affairs with an end, in addition the end double-screw bolt lamination that is formed with screw is bolted in the screw of horizontal shell internal partition of transmitter, and the circuit on main circuit board and the display module circuit board reaches therebetween with the connector of display module circuit board to be fixed in main circuit board that winding displacement is connected.Transmitter also is connected with external control chamber, computer by the connection jaws on the horizontal shell.
Above-mentioned sensitive element adopts two Room capacitance differential pressure transducers, be installed between high and low pressure interface tube in the vertical shell with sealing gasket, the pole plate of its high and low pressure electric capacity and public pole plate lead-in wire are directly connected in the sensitive element metering circuit of main circuit board by vertical shell inside.
Advantage and good effect: A. the present invention has adopted the method for measuring capacitor discharge time to measure pressure difference, therefore cancelled the oscillating circuit board unit, reduced by tens discrete components, reduced transmitter volume and welding job amount, the circuit antijamming capability is improved.B. circuit has been cancelled temperature and the higher discrete component of accuracy requirement, has reduced buying, incoming inspection workload.C. circuit integration of the present invention improves, and debugging is simplified, precision improves.D. oscillator is cancelled antijamming capability is improved, and properties of product are stable.E. main circuit board of the present invention be connected with the circuit of display module circuit board use instead with connector and therebetween winding displacement ground be flexible coupling, reduced plug, socket fixedly difficulty of matching, facility whole detection and the debugging outside shell time of assembling and main circuit board and display module circuit board.
Description of drawings
Fig. 1 is existing intelligent capacitance differential pressure cell STRUCTURE DECOMPOSITION figure;
Fig. 2 is intelligent capacitance differential pressure cell STRUCTURE DECOMPOSITION figure of the present invention;
Fig. 3 is spirally connected the while circuit with the connector enlarged drawing of directly pegging graft for existing intelligent capacitance differential pressure cell main circuit board and display module circuit board with double-screw bolt;
Fig. 4 reaches therebetween with connector with double-screw bolt its circuit that is spirally connected simultaneously that winding displacement is connected enlarged drawing for intelligent capacitance differential pressure cell main circuit board of the present invention and display module circuit board;
Fig. 5 is existing intelligent capacitance differential pressure cell circuit function block diagram;
Fig. 6 is an intelligent capacitance differential pressure cell circuit function block diagram of the present invention;
Fig. 7 all installs front elevation afterwards for main circuit board in the intelligent capacitance differential pressure cell T shape shell of the present invention and display module circuit board;
Fig. 8 all installs sectional view afterwards for main circuit board in the intelligent capacitance differential pressure cell T shape shell of the present invention and display module circuit board;
Fig. 9 is that main circuit board and display module circuit board are installed double-screw bolt figure.
Main label declaration:
1. display window covers 2. O-ring seals
3. display module circuit board, display module, display module circuit board unit
5. oscillating circuit board, oscillating circuit board unit 4. main circuit boards, main circuit board unit
6.T shape shell 6 ' horizontal shell
7. screw 6 " vertical shell
9. low-voltage tube interface 8. end caps
11. high-voltage tube interface 10. sensitive elements
13. double-screw bolt 12. temperature sensors
15. winding displacement 14. connectors
17. connection jaws 16. screws
MP. microprocessor unit MGC-sensitive element metering circuit
AN. button ZH-oscillator
D/A. digital-to-analog conversion ZK-oscillating controller
JT-detuner ST. digital communication
The conversion of I/V-current/voltage
Embodiment
In order to further specify content of the present invention, technical scheme, characteristics and functional effect, lift following example and accompanying drawings again in following: shown in Fig. 2,4,6,7,8, the technical scheme of intelligent capacitance differential pressure cell fixed connection structure of the present invention includes: the T shape shell 6 that forms appearance, installation transmitter parts; Be bolted in the display window lid 1 of horizontal shell 6 ' one ends; Be bolted in the end cap 8 of horizontal shell 6 ' other end; Be installed on the vertical shell 6 of 11,9 of high and low pressure interface tubes " in sensitive element 10 and temperature sensor 12; Be bolted in the circular main circuit board 4 and the display module circuit board 3 of horizontal shell internal partition screw 16 with double-screw bolt 13, screw 7 laminations; Feature is: be equipped with on its main circuit board: the sensitive element metering circuit MGC that is connected in sensitive element output; Receive the microprocessor unit MP of sensitive element metering circuit output; Be connected in the D/A change-over circuit of microprocessor unit output; Digital communication circuit ST; Be connected in 4-20mA power circuit, the digital communication circuit of the output of D/A change-over circuit, the display module that is connected in microprocessor unit be installed on its display module circuit board 3 and adjust button AN unit.
Its main circuit board 4 is formed with the spiral shell public affairs with display module circuit board 3 with an end, in addition end double-screw bolt 13 laminations that are formed with screw are bolted in the screw 16 of horizontal shell internal partition of transmitter, and the circuit on main circuit board and the display module circuit board reaches therebetween with the connector 14 of display module circuit board to be fixed in main circuit board that winding displacement 15 is connected.Transmitter also is connected with external control chamber, computer by the connection jaws on the horizontal shell 17.
Above-mentioned sensitive element 10 adopts two Room capacitance differential pressure transducers, be installed on 11,9 of high and low pressure interface tubes in the vertical shell with sealing gasket, the pole plate of its high and low pressure electric capacity and public pole plate lead-in wire are directly connected in the sensitive element metering circuit of main circuit board 4 by vertical shell inside.
Claims (3)
1. an intelligent capacitance differential pressure cell fixed connection structure includes: the T shape shell that forms appearance, installation transmitter parts; Be bolted in the display window lid of horizontal shell one end; Be bolted in the horizontal shell end cap of end in addition; Spiral shell is loaded between the high and low pressure interface tube, sensitive element and temperature sensor in the vertical shell; Be bolted in the circular main circuit board and the display module circuit board of horizontal shell internal partition screw with double-screw bolt, screw lamination; It is characterized in that: be equipped with on its main circuit board: the sensitive element metering circuit that is connected in sensitive element output; Receive the microprocessor unit of metering circuit output; Be connected in the D/A change-over circuit of microprocessor unit output; The digital communication circuit; Be connected in 4-20mA power circuit, the digital communication circuit of the output of D/A change-over circuit, the display module that is connected in microprocessor unit be installed on its display module circuit board and adjust push-button unit.
2. according to the described intelligent capacitance differential pressure cell fixed connection structure of claim 1., it is characterized in that: its main circuit board and display module circuit board are formed with the spiral shell public affairs with an end, in addition the end double-screw bolt lamination that is formed with screw is bolted in the screw of horizontal shell internal partition of transmitter, and the circuit on main circuit board and the display module circuit board reaches therebetween with the connector of display module circuit board to be fixed in main circuit board that winding displacement is connected.
3. according to the described intelligent capacitance differential pressure cell fixed connection structure of claim 1., it is characterized in that: above-mentioned sensitive element adopts two Room capacitance differential pressure transducers, be loaded between high and low pressure interface tube in the vertical shell with the sealing gasket spiral shell, the pole plate of its high and low pressure electric capacity and public pole plate lead-in wire thereof are directly connected in the sensitive element metering circuit of main circuit board by vertical shell inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720096861XU CN201060078Y (en) | 2007-07-24 | 2007-07-24 | Intelligent condenser type differential pressure cell fixed connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720096861XU CN201060078Y (en) | 2007-07-24 | 2007-07-24 | Intelligent condenser type differential pressure cell fixed connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060078Y true CN201060078Y (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720096861XU Expired - Lifetime CN201060078Y (en) | 2007-07-24 | 2007-07-24 | Intelligent condenser type differential pressure cell fixed connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060078Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980715A (en) * | 2012-11-16 | 2013-03-20 | 上海朝辉压力仪器有限公司 | Capacitance pressure transmitter and pressure sensing system |
| CN109479382A (en) * | 2016-07-08 | 2019-03-15 | 哈廷电子有限公司及两合公司 | The component and method of the grounding connection of shell for printed circuit board to electrical equipment |
-
2007
- 2007-07-24 CN CNU200720096861XU patent/CN201060078Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980715A (en) * | 2012-11-16 | 2013-03-20 | 上海朝辉压力仪器有限公司 | Capacitance pressure transmitter and pressure sensing system |
| CN102980715B (en) * | 2012-11-16 | 2015-12-30 | 上海朝辉压力仪器有限公司 | Capacitance pressure transmitter and pressure capsule system |
| CN109479382A (en) * | 2016-07-08 | 2019-03-15 | 哈廷电子有限公司及两合公司 | The component and method of the grounding connection of shell for printed circuit board to electrical equipment |
| CN109479382B (en) * | 2016-07-08 | 2021-01-15 | 哈廷电子有限公司及两合公司 | Assembly and method for the ground connection of a printed circuit board to a housing of an electrical device |
| US11191179B2 (en) | 2016-07-08 | 2021-11-30 | Harting Electric Gmbh & Co. Kg | Arrangement and method for establishing a ground connection between a circuit card and a housing of an electrical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tianjin Kentai Instrumentation Co., Ltd. Assignor: Tianjin Tianyi Group Instrument Co., Ltd. Contract fulfillment period: 2009.11.9 to 2014.11.8 Contract record no.: 2009120000262 Denomination of utility model: Intelligent condenser type differential pressure cell fixed connection structure Granted publication date: 20080514 License type: Exclusive license Record date: 20091111 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.9 TO 2014.11.8; CHANGE OF CONTRACT Name of requester: TIANJIN KENTAI AUTOMATION INSTRUMENTATION CO., LTD Effective date: 20091111 |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHONGHUAN TIG CO., LTD. Free format text: FORMER OWNER: TIANJIN TIG INSTRUMENTS GROUP CO., LTD. Effective date: 20101201 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300110 NO.92, CHANGJIANG ROAD, NANKAI DISTRICT, TIANJIN TO: 300384 NO.1, ROAD 2, HI-TECH DEVELOPMENT, HUAYUAN INDUSTRIAL PARK (OUTER RING), TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101201 Address after: 300384 Tianjin Huayuan Industrial Park (outer ring) Haitai development two Road No. 1 Patentee after: Zhonghuan TIG Co., Ltd. Address before: 300110 No. 92 Changjiang Road, Tianjin, Nankai District Patentee before: Tianjin Tianyi Group Instrument Co., Ltd. |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Tianjin Kentai Instrumentation Co., Ltd. Assignor: Tianjin Tianyi Group Instrument Co., Ltd. Contract record no.: 2009120000262 Date of cancellation: 20111229 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080514 |
|
| CX01 | Expiry of patent term |