CN202885910U - Air bubble type water level measuring device - Google Patents
Air bubble type water level measuring device Download PDFInfo
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- CN202885910U CN202885910U CN 201220521698 CN201220521698U CN202885910U CN 202885910 U CN202885910 U CN 202885910U CN 201220521698 CN201220521698 CN 201220521698 CN 201220521698 U CN201220521698 U CN 201220521698U CN 202885910 U CN202885910 U CN 202885910U
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Abstract
The utility model relates to an air bubble type water level measuring device which comprises an air source for measuring and an air pipe, wherein the air source for measuring is connected with an input end of a vacuum pressure pump through the air pipe, an output end of the vacuum pressure pump is connected with an input end of a one-way valve and an input end of an air reservoir in sequence through the air pipe, an output end of the air reservoir is inserted in water through the air pipe, the output end of the air reservoir is connected with a water level pressure control unit through the air pipe, and the water level pressure control unit is connected with an output end of the vacuum pressure pump through the air pipe. The air bubble type water level measuring device has the advantages of being simple in structure, convenient to use and maintain, good in air impermeability, precise in measuring result, and high in accuracy.
Description
Technical field
The utility model relates to a kind of hydraulic engineering level measurement device, relates in particular to a kind of air bubble type water level measurement mechanism.
Background technology
In the hydraulic engineering level measuring, generally adopt float to measure, a ball float namely is installed in water.When water level changed, ball float fluctuated, and rotated by mechanical steel strip driving scrambler, and the pulse signal of capturing and coding device output just can transform and show current water level.This level measuring is affected by mechanical drive, and measuring error is large, and precision is very low; And owing to adopting mechanical drive, mechanical fault is many, often affects the measurement of water level, waste of manpower, material resources.Also have now the air bubble type water level of employing measurement mechanism that water level is measured, can have the gas circuit poor air-tightness by existing air bubble type water level measurement mechanism, sensor is prone to the shortcomings such as temperature drift, and measurement result is also inaccurate.
The utility model content
It is good that technical problem to be solved in the utility model provides a kind of impermeability, and measurement result is the air bubble type water level measurement mechanism accurately.
The technical scheme that the utility model adopts is: a kind of air bubble type water level measurement mechanism, it comprises measures with source of the gas and tracheae, described measurement is connected with the input end of vacuum pressure pump by tracheae with source of the gas, described vacuum pressure delivery side of pump is connected with the input end of retaining valve, air reservoir successively by tracheae, and the output terminal of described air reservoir inserts in the water by tracheae; The output terminal of described air reservoir is connected with the level pressure control module by tracheae, and described level pressure control module is connected with the vacuum pressure delivery side of pump by tracheae.
Press such scheme, described level pressure control module comprises pressure transducer, temperature sensor and single-chip microcomputer, described pressure transducer is connected with single-chip microcomputer by the first serial data acquisition chip, described temperature sensor is connected with single-chip microcomputer by the second serial data acquisition chip, described single-chip microcomputer is connected with host computer by SDI bus conversion chip or a RS232 conversion chip, and described single-chip microcomputer is connected with touch-screen by the 2nd RS232 conversion chip.
Press such scheme, described measurement source of the gas is air, and is provided with air drying cylinder between measuring with source of the gas and vacuum pressure pump.
Press such scheme, tracheae and retaining valve that described tracheae and retaining valve adopt U.S. SWAGELOK company to produce, the pipe adapter of tracheae also adopt the pipe adapter of the tracheae of U.S. SWAGELOK company production.
Press such scheme, described single-chip microcomputer adopts the MC9S12A64 flash memory microcontroller.
Principle of work: after air filtered, purifies by air drying cylinder, vacuum pressure pump was pressed into air in the air reservoir through retaining valve.Gas in the air reservoir respectively pressure transducer in the level pressure control module and the tracheae that passes into is under water carried, and when vacuum pressure pump stopped to blow, retaining valve was closed, and gas tube orifice is under water sealed by gas.Thereby an airtight Bonding pressure sensor and the cavity of gas tube orifice have under water been formed.According to the pressure transfer principle as can be known, when endotracheal gas reaches mobile equilibrium, the pressure that bears of gas tube orifice is delivered on the pressure transducer of level pressure control module through tracheae under water, so, the pressure that bears of the pressure transducer of the pressure of tracheae and level pressure control module equates under water, deduct atmospheric pressure value with this force value, can obtain the fine pressure value of head, thereby just can draw water level value.
The beneficial effects of the utility model are: 1, simple in structure, operation and maintenance is convenient.2, impermeability is good, and measurement result is accurate, and precision is high.
Description of drawings
Fig. 1 is the structured flowchart of an embodiment of the utility model.
Fig. 2 is that 6 of utility model saves external wiring terminal.
Fig. 3 is the circuit theory diagrams of level pressure control module.
Fig. 4 is the circuit theory diagrams of RS232 conversion chip.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of air bubble type water level measurement mechanism, it comprises measures with source of the gas (air), level pressure control module U1, touch-screen U2, air drying cylinder U3, vacuum pressure pump U4, retaining valve U5, air reservoir U6, and tracheae, cabinet, pipe adapter and connector etc.Wherein: measurement is provided with the input end of vacuum pressure pump U4 through air drying cylinder U3 with source of the gas and is connected, the output terminal of vacuum pressure pump U4 is connected by the input end of tracheae with retaining valve U5, retaining valve U5 output terminal is connected by the input end of tracheae with air reservoir U6, and the output terminal of air reservoir U6 passes into water level under water by tracheae; The output terminal of air reservoir U6 is connected with level pressure control module U1 by tracheae simultaneously, and level pressure control module U1 is connected by the output terminal of tracheae with vacuum pressure pump U4; Described level pressure control module U1 is connected with host computer by SDI bus conversion chip or a RS232 conversion chip, and described level pressure control module U1 is connected with touch-screen by the 2nd RS232 conversion chip.
In the utility model, described measurement places in the cabinet 1 with source of the gas, level pressure control module U1, touch-screen U2, air drying cylinder U3, vacuum pressure pump U4, retaining valve U5, air reservoir U6.
Ultimate principle of the present utility model: after air filtered, purifies by air drying cylinder, vacuum pressure pump was pressed into air in the air reservoir through retaining valve.Gas in the air reservoir respectively pressure transducer in the level pressure control module and the tracheae that passes into is under water carried, and when vacuum pressure pump stopped to blow, retaining valve was closed, and gas tube orifice is under water sealed by gas.Thereby an airtight Bonding pressure sensor and the cavity of gas tube orifice have under water been formed.According to the pressure transfer principle as can be known, when endotracheal gas reaches mobile equilibrium, the pressure that bears of gas tube orifice is delivered on the pressure transducer of level pressure control module through tracheae under water, so, the pressure that bears of the pressure transducer of the pressure of tracheae and level pressure control module equates under water, deduct atmospheric pressure value with this force value, can obtain the fine pressure value of head, thereby just can draw water level value.
In the air bubble type water level measurement mechanism as shown in Figure 1:
Level pressure control module: have the on off control of pressure measurement, thermometric, Parameter storage, air pump, the calculating of waterlevel data and processing, and communication function;
Air drying cylinder: air is through this parts dust and dehumidifying;
Vacuum pressure pump: the air after will purifying is pressed in the air reservoir through retaining valve;
Retaining valve: the gas backflow in the prevention air reservoir in order to avoid cause the loss of gas pressure value, makes gas passage form an airtight cavity in vacuum pressure pump simultaneously;
Touch-screen: interactive window, the figure of measurement data shows;
Tracheae: tracheae mainly provides an airtight pressure transmission channels;
Cabinet, pipe adapter and connector: cabinet is the sealed cabinet that German prestige figure (RITTAL) company produces, surface plastic spraying; Be of a size of: 400mm * 300mm * 210mm;That this cabinet has is firm, sealing, electrostatic prevention, the advantage such as damp proof; The big Lip river of pipe adapter employing U.S. SWAGELOK(generation gram) army's grade product is used for the instrument internal gas circuit and connects, and its sealing property is good; Also have aviation 7 cores, aviation 4 core plugs, 6 pin line banks, be used for power supply input and and upper machine communication.
Tracheae and retaining valve that described tracheae and retaining valve adopt U.S. SWAGELOK company to produce, the pipe adapter of tracheae also adopt the pipe adapter of the tracheae of U.S. SWAGELOK company production.
Performance parameter of the present utility model:
Power supply: 12VDC ± 10%, 3A, electric current 300mA on duty
Power consumption: about 0.5W (touch-screen backlight can autoshutdown)
Measurement range: 0 ~ 30m is optional
Measuring accuracy: 0.05%
Acquisition interval: freely arranged in 1～60 minute
Temperature range :-10 ~ 60 ℃.
Fig. 2 is that 6 of an embodiment of the utility model saves to external wiring terminal, wherein:
1), V1+ is level pressure control module U1 power supply positive pole, i.e. 12VDC positive source;
2), SDI is the communication signal mouth of level pressure control module U1;
3), GND is level pressure control module U1 power supply negative pole, i.e. 12VDC power cathode; The definition of the definition load SDI12 agreement Physical layer of above three terminals, can directly directly link to each other with the data acquisition unit of supporting the SDI agreement, also can supply separately the 12VDC power supply, the SDI12 signal be changed into RS232 protocol signal and other device talks of standard by protocol converter;
4), GND is the power cathode of vacuum pressure pump U4;
5), V2+ is the positive source of vacuum pressure pump U4;
6), PE is equipment ground protection terminal.
Also have in addition connection for breather pipe: one is the circular mouth that filters of air pump air intake opening: 3/8in, and one is the air reservoir gas outlet: 3/8in circular hollow screw socket.
Fig. 3 is that the circuit theory diagrams of the level pressure control module in the utility model: U14 is 32 single-chip microcomputers, and J1 is the silicon bridge pressure transducer, and J1-1, J1-3 are the 5V power supply, and J1-2, J1-4 are water level silicon bridge pressure transducer differential pressure input port.U10, U11 are two 16 bit string mouth data acquisition chips, and the J1-2 of silicon bridge pressure transducer J1, J1-4 pin are connected to 4,5 pin of first serial data acquisition chip U11, and its gathers level pressure signal, are connected to 73 pin of single-chip microcomputer U14 by its 8 pin; U7, U3 are the scene temperature acquisition chips, 6 pin of temperature acquisition chip U7 are connected to 2 pin of temperature acquisition chip U3,6 pin of temperature acquisition chip U3 are connected to 4 pin of second serial data acquisition chip U10, its collection site temperature signal, be connected to 71 pin of single-chip microcomputer U14 by its 8 pin, 9 pin of serial port data acquisition chip U10, U11 are clock signal, are connected to 70 pin of single-chip microcomputer U14.U8 is SDI bus conversion chip, and its address mouth 2,4,6,8 pin are connected to 21 pin of single-chip microcomputer U14, and its sheet selects 9 pin to be connected to 5 pin of single-chip microcomputer U14.Single-chip microcomputer U14 passes through software filtering, temperature compensation to the pressure signal that it collects like this, and SDI is transferred to host computer by bus.External power source DC12V is connected to 8 pin of power supply chip U5, and power supply chip U5 powers to Single Chip Microcomputer (SCM) system by 1 pin output 5V voltage.U15 is Power Supply Monitoring and reset chip, 1 pin of Power Supply Monitoring and reset chip U15 is connected to 30 pin of single-chip microcomputer U14, when Single Chip Microcomputer (SCM) system powered on, reset signal of 1 pin of Power Supply Monitoring and reset chip U15 output was to single-chip microcomputer U14, and single-chip microcomputer U14 is normal operation just.Simultaneously when power-supply system occurs than great fluctuation process, 1 pin of Power Supply Monitoring and reset chip U15 is also exported a reset signal to single-chip microcomputer U14, make the single-chip microcomputer U14 work of restarting that resets, the purpose of doing like this is the program fleet that prevents among the U14, has improved the reliability of system.
Single-chip microcomputer of the present utility model adopts MC9S12A64 flash memory microcontroller (MCU).
As shown in Figure 4: U26 is the RS232 conversion chip, 12,13 of RS232 conversion chip U26 is connected 63,64 pin and is connected with single-chip microcomputer U14, it and single-chip microcomputer U14 communication, collecting pressure signal, convert the RS232 signal of standard to, 14,15 of RS232 conversion chip U26 is connected to the RS232 mouth of panel touch-screen.So just the level pressure value that collects being converted into water level value shows.
U22 is the electric current and voltage conversion chip, 2 pin of electric current and voltage conversion chip U22,13 pin are connected to 16,17 pin, 10 pin of electric current and voltage conversion chip U22 are connected to 2 pin of triode Q4, and the 4-20mA standard current signal is by the 7 pin output of electric current and voltage conversion chip U22.
Optocoupler US1 and mos pipe QS1 consist of single-chip microcomputer U14 to the vacuum pressure priming of pump, stop control, 1 pin of optocoupler US1 is connected to 22 pin of single-chip microcomputer U14, the PUMP pin of mos pipe QS1 is connected to the coil of vacuum pressure pump, when 22 pin of single-chip microcomputer U14 are exported high and low level signal, be switched on or switched off the coil of vacuum pressure pump by the PUMP pin of mos pipe QS1.
Compared with prior art, the utility model has the advantage of:
1, the whole measurement gas circuit use of system is tracheae, pipe adapter and the retaining valve that U.S. SWAGELOK company produces, U.S. SWAGELOK is developer and the manufacturer of world-leading fluid system solution, the various materials such as joint has 316,316L, brass, alloy, PFA, its ferrule fitting is technical at global position oneself at the forefront, unique surface hardening process and patented groove and specific section geometric provide unique engineering science characteristics for ferrule fitting, and these have guaranteed the impermeability of system from the outside;
2, the MC9S12A64 flash memory microcontroller (MCU) of the control core of system module employing, it is the new generation product of a success in the 68HC12 series; It has utilized the series of a pin position of the leading A64(compatibility of Freescale) 0.25 μ flash memory, and be the 512KB flash memory from the Expansion of 32KB.This MC9S12A64 be the 68HC12 Upward Migration of Freescale to the application of 68HC08,68HC11, a larger internal memory is provided, the performance of more peripherals and Geng Gao makes integrated third generation flash memory worthy of the name.The in addition flexible safeguard protection of MC9S12A64 can change field code neatly, for preventing unexpected programming or wiping protection and plan flexibly to provide safeguard.It is with 16 central processing units, 64K Flash EEPROM, 1K byte EEPROM, 4K byte RAM, 8 tunnels analogy digital quantizers (– distinguished that rate – external conversion triggered the ability digital filtering in 10 minutes), and two asynchronous serial communication interfaces; Simultaneity factor provides circuit compensation for the drift of silicon bridge pressure sensor temperature.
The above; only being preferred embodiment of the present utility model, is not that the utility model is done any pro forma restriction, and those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification; equivalent variations or modification all drop in the protection domain of the present utility model.
Claims (5)
1. air bubble type water level measurement mechanism, it comprises measures with source of the gas and tracheae, it is characterized in that: described measurement is connected with the input end of vacuum pressure pump by tracheae with source of the gas, described vacuum pressure delivery side of pump is connected with the input end of retaining valve, air reservoir successively by tracheae, and the output terminal of described air reservoir inserts in the water by tracheae; The output terminal of described air reservoir is connected with the level pressure control module by tracheae, and described level pressure control module is connected with the vacuum pressure delivery side of pump by tracheae.
2. air bubble type water level measurement mechanism as claimed in claim 1, it is characterized in that: described level pressure control module comprises pressure transducer, temperature sensor and single-chip microcomputer, described pressure transducer is connected with single-chip microcomputer by the first serial data acquisition chip, described temperature sensor is connected with single-chip microcomputer by the second serial data acquisition chip, described single-chip microcomputer is connected with host computer by SDI bus conversion chip or a RS232 conversion chip, and described single-chip microcomputer is connected with touch-screen by the 2nd RS232 conversion chip.
3. air bubble type water level measurement mechanism as claimed in claim 1, it is characterized in that: described measurement source of the gas is air, and is provided with air drying cylinder between measuring with source of the gas and vacuum pressure pump.
4. air bubble type water level measurement mechanism as claimed in claim 1, it is characterized in that: tracheae and retaining valve that described tracheae and retaining valve adopt U.S. SWAGELOK company to produce, the pipe adapter of tracheae also adopt the pipe adapter of the tracheae of U.S. SWAGELOK company production.
5. air bubble type water level measurement mechanism as claimed in claim 2 is characterized in that: described single-chip microcomputer employing MC9S12A64 flash memory microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521698 CN202885910U (en) | 2012-10-12 | 2012-10-12 | Air bubble type water level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521698 CN202885910U (en) | 2012-10-12 | 2012-10-12 | Air bubble type water level measuring device |
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| CN202885910U true CN202885910U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220521698 Expired - Fee Related CN202885910U (en) | 2012-10-12 | 2012-10-12 | Air bubble type water level measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487107A (en) * | 2013-10-09 | 2014-01-01 | 深圳市科皓信息技术有限公司 | Bubble type level gauge |
| CN104913828A (en) * | 2015-06-24 | 2015-09-16 | 重庆多邦科技发展有限公司 | Energy-saving method of bubble type fluviograph, bubble type fluviograph and water level monitoring system |
| CN105258761A (en) * | 2014-07-16 | 2016-01-20 | 东莞市海川博通信息科技有限公司 | Bubble type water level indicator and water body sediment concentration detection method |
-
2012
- 2012-10-12 CN CN 201220521698 patent/CN202885910U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487107A (en) * | 2013-10-09 | 2014-01-01 | 深圳市科皓信息技术有限公司 | Bubble type level gauge |
| CN103487107B (en) * | 2013-10-09 | 2016-08-17 | 深圳市科皓信息技术有限公司 | Air bubble type liquid level gauge |
| CN105258761A (en) * | 2014-07-16 | 2016-01-20 | 东莞市海川博通信息科技有限公司 | Bubble type water level indicator and water body sediment concentration detection method |
| CN104913828A (en) * | 2015-06-24 | 2015-09-16 | 重庆多邦科技发展有限公司 | Energy-saving method of bubble type fluviograph, bubble type fluviograph and water level monitoring system |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20131012 |