CN103913182A - Full-isolation online measurement monitoring system - Google Patents
Full-isolation online measurement monitoring system Download PDFInfo
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- CN103913182A CN103913182A CN201410131329.1A CN201410131329A CN103913182A CN 103913182 A CN103913182 A CN 103913182A CN 201410131329 A CN201410131329 A CN 201410131329A CN 103913182 A CN103913182 A CN 103913182A
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Abstract
The invention provides a full-isolation online measurement monitoring system. The full-isolation online measurement monitoring system comprises a measurement instrument and a sensor connected with the signal input end of the measurement instrument. A shell of the measurement instrument is an insulating shell, the instrument is provided with an energy storage element serving as a power supply of the measurement instrument, and the input end of the energy storage element is provided with a power supply module and a switch, wherein the power supply module and the switch are connected with an external power supply. The full-isolation online measurement monitoring system is characterized in that the output end of the measurement instrument is provided with a current output optoelectronic isolation module or an electromagnetic isolation module, the sensor is arranged in a container containing a measured medium, the container is provided with a measured medium conveying pipeline and a measured medium discharge pipeline, and the conveying pipeline is provided with a valve with an insulating valve body and an insulating valve core. By means of the full-insulating shell of the instrument, the external ground potential can be effectively prevented from influencing a measurement circuit of the instrument. By turning off the switch connected with the external power supply, the influences of the potential or the grounding null line potential of the external power supply on the measurement instrument can be effectively prevented.
Description
Technical field
The present invention relates to a kind of measurement instrument and sensor, guarantee its completely with on-the-spot charging equipment or the isolation of each earth point, can not be subject to each earth point " zero " current potential each unequal or unstable and cause the measured value drift, saltus step of all types of industries on-line measurement instrument, on-line measurement supervisory system that cannot the value of reading.
Background technology
Existing on-line measurement supervisory system, there are measurement instrument and the sensor being connected with the signal input part of measurement instrument, meter case is metal shell or insulation shell, power module and the switch that instrument connects with extraneous power supply or have the energy-storage travelling wave tube as measurement instrument power supply, energy-storage travelling wave tube input end has the power module and the switch that are connected with extraneous power supply.But in current each industrial field device, ubiquitous each ground connection " zero " current potential is each unequal, unstable, therefore cause measured value drift, the saltus step of all types of industries on-line measurement instrument, even produce cannot the value of reading phenomenon, affect the program control effect of robotization of controlled plant.
Summary of the invention
For addressing the above problem, the invention provides a kind of full isolation on-line measurement supervisory system.
Full isolation on-line measurement supervisory system of the present invention, there are measurement instrument and the sensor being connected with the signal input part of measurement instrument, meter case is insulation shell, instrument is with the energy-storage travelling wave tube as measurement instrument power supply, energy-storage travelling wave tube input end has the power module and the switch that are connected with extraneous power supply, it is characterized in that: the output terminal of measurement instrument is with current output photoelectric isolation module or electromagnetic isolation module, sensor setting is in the container that measured medium is housed, described container is with transfer pipeline and the discharge line of measured medium, transfer pipeline is with the valve of insulation valve body isolation valve core.The meter case of all insulation, effectively isolated extraneous earth potential affects the metering circuit of instrument.The switch connecting by disconnecting extraneous power supply, just can effectively prevent current potential or the impact of ground connection zero line current potential on measurement instrument of extraneous power supply.Particularly the output terminal of measurement instrument is with current output photoelectric isolation module or electromagnetic isolation module, coordinate the transfer pipeline of sensor place container by the valve isolation of insulation valve body isolation valve core, having inputted after measured medium in container, close spool, measurement instrument just can be completely and the external world of industry spot isolate completely, " zero " current potential that can not be subject to equipment that industry spot contacts from medium and with medium and power supply is each unequal, unsettled impact, can not be subject to industry spot controlled device and relevant device " zero " current potential each unequal, unsettled impact.Effectively guarantee the program control effect of robotization of controlled plant.
Particularly, the valve that the present invention isolates described in on-line measurement supervisory system is entirely solenoid valve, and the input end of solenoid valve is connected with energy-storage travelling wave tube by electronic switch, and the controlled end of electronic switch is connected with the controller output end of instrument; The control end of switch and another output terminal of the controller of instrument of extraneous power supply are connected, and the output terminal of the observation circuit of energy-storage travelling wave tube is connected with controller input end.Adopt this structure, not only can monitor medium more accurately, the present invention also controls each parts automatically by the controller of instrument, in the time that energy-storage travelling wave tube reaches capacity requirement, external power source is monitored and cut off to instrument automatically, energy-storage travelling wave tube and external power source are kept apart, and energy-storage travelling wave tube is powered to the operation of whole equipment, and energy-storage travelling wave tube can repeatedly charge, discharge.Mainly that all control procedure and controlled parts are all only connected with energy-storage travelling wave tube, isolating exterior equipment, can not produce new control procedure each unequal, the unsettled impact of " zero " current potential, guaranteed the reliable and stable of measured value.
Described solenoid valve comprises magnetic dynamic elasticity iron core in electromagnet, electromagnet plastic sheath, electromagnet, plastics valve body, the interior diaphragm of rubber sheet of valve body; In said electromagnet, magnetic dynamic elasticity iron core is connected with diaphragm of rubber sheet in said valve body, and in said electromagnet, in magnetic dynamic elasticity iron core and said valve body, the common interlock of diaphragm of rubber sheet can and export the object of carrying out break-make control and then reaching isolation measured medium to the import of plastics valve body.The solenoid valve of the insulation valve body isolation valve core forming like this; the outside of the electromagnet in solenoid valve and magnetic dynamic elasticity iron core is provided with plastic protection casing, and valve body adopts plastic material, and valve body is with input port and delivery outlet; in valve body, be provided with diaphragm of rubber sheet, diaphragm of rubber sheet is connected with magnetic dynamic elasticity iron core.The also container of an insulation preferably of container, prevents from when container metal connecting piece is fixing contacting with " zero " current potential in the external world, guarantees measured medium and extraneous isolation.As the container of plastics, plastic containers side has medium delivery outlet, and measured medium is housed in plastic containers, and container is communicated with on-the-spot measured medium source by transfer pipeline and solenoid valve.Described energy-storage travelling wave tube is super capacitor or rechargeable battery.
Described energy-storage travelling wave tube is super capacitor or rechargeable battery, also can manual operation to energy-storage travelling wave tube, manually connect external power source and energy-storage travelling wave tube, and in the time that energy-storage travelling wave tube reaches capacity requirement, cut off external power source, energy-storage travelling wave tube and external power source are isolated.
The present invention is simple in structure, easy to operate, adopt the partition method of insulation crust, insulation valve body, insulation spool, switch, isolation module, isolated instrument and sensor contact with the external world of external power supply, outside controlled plant, measured medium transfer pipeline, can be effectively by all parts of present device with respectively connect " " some isolation completely, avoid in measuring process, produce the phenomenon that numerical value drift, saltus step maybe cannot the values of reading.
Accompanying drawing explanation
Accompanying drawing 1 has represented a kind of full isolation on-line measurement supervisory system structural representation of the present invention.
Embodiment
One is isolated on-line measurement supervisory system as shown in drawings entirely, there are measurement instrument and the sensor 10 being connected with the signal input part of measurement instrument, meter case is insulation shell 1, instrument is with the energy-storage travelling wave tube as measurement instrument power supply (super capacitor or rechargeable battery), and energy-storage travelling wave tube input end has the power module 2 and the switch that are connected with extraneous power supply 9.The output terminal of measurement instrument, with current output photoelectric isolation module or electromagnetic isolation module (being called for short electric current output module 3), is connected with controlled plant 13.Sensor 10 is arranged in the plastic containers 4 of splendid attire measured medium 5, and described plastic containers are with transfer pipeline 14 and the discharge line of measured medium, and transfer pipeline is with the solenoid valve 7 of insulation valve body isolation valve core.The shell of instrument adopts plastic material, and fixing by web member and stand 12.Gauge external, with display screen and action button 8, is provided with energy-storage travelling wave tube super capacitor, circuit board, current output photoelectric isolation module or electromagnetic isolation module and software control procedure in instrument.By software control procedure, super capacitor or rechargeable battery are carried out to automatic charging, in the time that electric capacity reaches capacity requirement, software control procedure automatic control switch cuts off external power source, and by electric capacity and external power source isolation, super capacitor is powered to whole equipment.Super capacitor is connected with metering circuit and electric current output module respectively, and electric current output module and external unit pass through connection.Circuit board input end is connected with sensor.Plastic containers are fixed by fixed support.The sidewall of plastic containers has a medium delivery outlet 4 '.The input end of solenoid valve is connected with energy-storage travelling wave tube by electronic switch, and the control end of electronic switch is connected with the controller output end of instrument; The control end of switch and another output terminal of the controller of instrument of extraneous power supply are connected, and the output terminal of the observation circuit of energy-storage travelling wave tube is connected with controller input end.Described solenoid valve adopts insulation valve body isolation valve core, and valve body is provided with a delivery outlet and an input port.Solenoid valve is by the controller control of circuit board.Plastic containers are connected by pipeline with the delivery outlet of valve body, and the input port of valve body is connected with the conveyance conduit 14 in measured medium source 11.
Switch on power, super capacitor is carried out to automatic charging, reach after super capacitor capacity, cut off external power source by software control procedure, by electric capacity and external power source isolation.The valve body of solenoid valve adopts plastic material, and valve body is with input port and delivery outlet, and the delivery outlet of valve body is connected with plastic containers, and the input port of valve body is connected with the pipeline of testing medium.Solenoid valve is by controller and the circuit control of measurement instrument, and solenoid valve is switched on, and solenoid produces magnetic force, drives the motion of magnetic dynamic elasticity iron core, and then drives diaphragm of rubber sheet to open input port and the delivery outlet of valve body.Diaphragm of rubber sheet is opened input port and the delivery outlet of valve body, testing medium enters in plastic containers via the delivery outlet of valve body, in the time filling measured medium in plastic containers, the input port of valve body and delivery outlet, the testing medium outside measured medium and container in plastic containers is isolated.Adopt in this way, measured medium and testing medium can be isolated completely, medium is carried out to better field monitoring.The monitoring component of sensor detects measured medium, becomes signal to transfer out the data-switching detecting, in the display screen of instrument, shows.Measured medium after having detected flows out by the medium delivery outlet of plastic containers side.The outside of instrument, sensor and solenoid valve all adopts plastic casing, is fixed on metal rack or support.Solenoid valve energising, electromagnetic coil in solenoid valve produces magnetic force, drive the motion of magnetic dynamic elasticity iron core, and then drive the motion of diaphragm of rubber sheet, open input port and the delivery outlet of valve body, testing medium enters solenoid valve by the input port of valve body, via solenoid valve, enter in plastic containers from the delivery outlet of valve body, in the time being full of measured medium in container, the delivery outlet of valve body and input port, keep apart measured medium and testing medium.Sensor will detect measured medium, and the data after detection show in the display screen of instrument.After measured medium detects, flow out via the medium delivery outlet of plastic containers sidewall.After task completes, via software control procedure, super capacitor is recharged.
The present invention is simple in structure, easy to operate, adopt the mode of plastic casing fixing seal instrument, sensor and solenoid valve, isolated instrument, external power supply, current output terminal, measured medium transfer pipeline, can be effectively by all parts of present device with respectively connect " " some isolation completely, avoid in measuring process, produce the phenomenon that numerical value drift, saltus step maybe cannot the values of reading.
Claims (6)
1. full isolation on-line measurement supervisory system, there are measurement instrument and the sensor being connected with the signal input part of measurement instrument, meter case is insulation shell, instrument is with the energy-storage travelling wave tube as measurement instrument power supply, energy-storage travelling wave tube input end has the power module and the switch that are connected with extraneous power supply, it is characterized in that: the output terminal of measurement instrument is with current output photoelectric isolation module or electromagnetic isolation module, sensor setting is in the container that measured medium is housed, described container is with transfer pipeline and the discharge line of measured medium, transfer pipeline is with the valve of insulation valve body and insulation spool.
2. full isolation on-line measurement supervisory system as claimed in claim 1, is characterized in that: described valve is solenoid valve, and the controlled end of solenoid valve is connected with energy-storage travelling wave tube by electronic switch, and the controlled end of electronic switch is connected with the controller output end of instrument; The control end of switch and another output terminal of the controller of instrument of extraneous power supply are connected, and the output terminal of the observation circuit of energy-storage travelling wave tube is connected with controller input end.
3. full isolation on-line measurement supervisory system as claimed in claim 1, is characterized in that: described energy-storage travelling wave tube is super capacitor or rechargeable battery.
4. the full isolation on-line measurement supervisory system as described in claim 1 or 2 or 3, is characterized in that: described solenoid valve comprises magnetic dynamic elasticity iron core in electromagnet, electromagnet plastic sheath, electromagnet, plastics valve body, the interior diaphragm of rubber sheet of valve body; In said electromagnet, magnetic dynamic elasticity iron core is connected with diaphragm of rubber sheet in said valve body, and in said electromagnet, in magnetic dynamic elasticity iron core and said valve body, the common interlock of diaphragm of rubber sheet can be carried out break-make control to the import of plastics valve body and outlet.
5. the full isolation on-line measurement supervisory system as described in claim 1 or 2 or 3, is characterized in that: container is the container of insulation.
6. full isolation on-line measurement supervisory system as claimed in claim 4, is characterized in that: container is the container of insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131329.1A CN103913182B (en) | 2014-04-03 | 2014-04-03 | Full isolation on-line measurement monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410131329.1A CN103913182B (en) | 2014-04-03 | 2014-04-03 | Full isolation on-line measurement monitoring system |
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| CN103913182A true CN103913182A (en) | 2014-07-09 |
| CN103913182B CN103913182B (en) | 2016-05-11 |
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| CN201410131329.1A Active CN103913182B (en) | 2014-04-03 | 2014-04-03 | Full isolation on-line measurement monitoring system |
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2014
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| CN203216814U (en) * | 2013-04-09 | 2013-09-25 | 北京科技大学 | Device for determining equilibrium solubility of acidic gas in alkaline absorption liquid |
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| CN103913182B (en) | 2016-05-11 |
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