CN205940663U

CN205940663U - Fluid meter

Info

Publication number: CN205940663U
Application number: CN201620311092.XU
Authority: CN
Inventors: 阳君
Original assignee: Nanjing Hongguang Environmental Technology Co Ltd
Current assignee: Nanjing Hongguang Environmental Technology Co Ltd
Priority date: 2016-04-13
Filing date: 2016-04-13
Publication date: 2017-02-08
Anticipated expiration: 2026-04-13

Abstract

The utility model relates to a fluid meter, fluid meter including light sensing circuit board, peristaltic pump, connect in the pump line of peristaltic pump, measurement frame, top connection, lower clutch and the fixed quartz capsule that sets up in the measurement is put up, be fixed with optical emitter and the optical receiver that contacts with the quartz capsule on the measurement frame, the one end and the quartz capsule top of top connection are connected, the other end of top connection and the one end of pump line are connected, the one end of lower clutch and the bottom of quartz capsule are connected, the other end and the inlet of lower clutch link to each other, optical emitter and optical receiver are all connected in providing the operating current and gather the voltage signal's of optical receiver smooth sensing circuit board in real time for optical emitter and optical receiver. Measure simple structure, measurement accuracy through optical emitter, optical receiver convection cell to the measurement of convection cell does not receive that the fluid is nephelometric to be influenced.

Description

Fluid meter

Technical field

This utility model is related to the liquid level metering device in enviromental protection instrument field, especially a kind of fluid meter.

Background technology

The fluid metering mode commonly used at present has three kinds, and a kind of is wriggling pump-metered, and the method is simple and convenient, and cost is fitted Low, fault rate is low；But the limitation due to itself structure and cause metering inaccurate, such as have gap can make between peristaltic pump roller Fluid produces and pauses, and in addition peristaltic pump tube has been used long and can have been deformed, long-time use, and peristaltic pump tube abrasion deformation etc. all can cause meter Amount is inaccurate.Second is injection pump-metered, and the method accuracy of measuring is high, using also more convenient, but expensive, and inject Pump and fluid directly contact, affect device service life.The third adds fluid detection quantifier for peristaltic pump, is also current environmental protection Using a kind of most modes on instrument, the method overcomes the defect that existing peristaltic pump pump line exists, but this peristaltic pump Plus do not have the voltage of optical receiver during fluid to be 1 volt in the quartz ampoule of fluid detection quantifier, when having fluid and turbidity low time The voltage of receptor is 1.5～2V, and generally setting 1.3V detects the threshold voltage of fluid for optical receiver, when optical receiver inspection When measuring voltage and being more than threshold values 1.3V, quantifier is set to and fluid is detected；But have fluid and when turbidity is high optical receiver voltage 1V can be less than or equal to, now the voltage of optical receiver is not reaching to threshold values, and quantifier just cannot detect fluid.

Utility model content

The purpose of this utility model is to provide a kind of new fluid meter, and described fluid meter can overcome existing skill In art, peristaltic pump quantifier be cannot be carried out the problem of fluid metering because affecting by fluid turbidity.

For reaching above-mentioned purpose, this utility model can adopt the following technical scheme that：

A kind of fluid meter, described fluid meter includes photoinduction circuit plate, peristaltic pump, is connected to the pump of peristaltic pump Pipe, metrology frame, top connection, lower contact, allow inlet that fluid enters and be fixedly installed on quartz ampoule in metrology frame, institute State and the optical transmitting set contacting with quartz ampoule and optical receiver are fixed with metrology frame, one end of described top connection and quartz ampoule top Portion is connected, and the other end of described top connection is connected with one end of pump line, one end of described lower contact and the bottom of quartz ampoule It is connected, the other end of described lower contact is connected with inlet, described optical transmitting set and optical receiver are all connected to launch for light Device and the photoinduction circuit plate of optical receiver offer operating current and the voltage signal of Real-time Collection optical receiver.

When peristaltic pump operating, when producing negative pressure, fluid is entered in quartz ampoule by inlet；When fluid level rises to During optical receiver present position, optical receiver exports low level, and peristaltic pump shuts down, and carries out the metering of fluid.

The threshold voltage that described optical receiver detects fluid is 0.6V, the optical receiver when not having fluid in quartz ampoule Voltage is 2 volts, and when having the fluid of the first turbidity in quartz ampoule, the voltage of optical receiver is 0.2～0.4V, works as quartz ampoule Inside have second turbidity fluid when optical receiver voltage be 0.1～0.3V.

When the voltage that optical receiver 10 detects is less than threshold values 0.6V, quantifier detects fluid；When optical receiver 10 When the voltage detecting is more than threshold values 0.6V, quantifier can't detect fluid.

When peristaltic pump negative pressure sucks fluid, between fluid and pump line, form air cushioning area.

Compared with prior art, this utility model fluid meter is carried out by optical transmitting set 9, optical receiver 10 convection cell Metering, structure is simple, accurate measurement, and the metering of convection cell is not affected by fluid turbidity.

Brief description

Fig. 1 is the schematic diagram of this utility model fluid meter.

Specific embodiment

Further describe the technical solution of the utility model below in conjunction with the accompanying drawings；

Fig. 1 is the schematic diagram of this utility model fluid meter.

A kind of fluid meter, described fluid meter includes photoinduction circuit plate 1, peristaltic pump 2, is connected to peristaltic pump 2 Pump line 3, metrology frame 4, top connection 5, lower contact 6 allow fluid enter inlet 8 and be fixedly installed in metrology frame Quartz ampoule 7, described metrology frame is fixed with the optical transmitting set 9 contacting with quartz ampoule 7 and optical receiver 10, described top connection 5 One end be connected with the top of quartz ampoule 7, the other end of described top connection 5 is connected with one end of pump line 3, described lower contact 6 one end is connected with the bottom of quartz ampoule 7, and the other end of described lower contact 6 is connected with inlet 8, described optical transmitting set 9 He Optical receiver 10 is all connected to provide operating current and Real-time Collection optical receiver 10 for optical transmitting set 9 and optical receiver 10 The photoinduction circuit plate 1 of voltage signal.

When peristaltic pump 2 operates, when producing negative pressure, fluid is entered in quartz ampoule 7 by inlet 8, when peristaltic pump 2 negative pressure When sucking fluid, form air cushioning area between fluid and pump line 3, it is to avoid the corrosion of pump line 3, extend making of peristaltic pump 2 Use the life-span.

This utility model fluid meter is measured by optical transmitting set 9, optical receiver 10 convection cell, and structure is simple, Accurate measurement, with low cost.When fluid level rises to optical receiver 10 present position, optical receiver 10 exports low level, Peristaltic pump 2 shuts down, and carries out the metering of fluid.When not having fluid in quartz ampoule 7, the voltage of optical receiver 10 is 2 volts, when When having the low fluid of turbidity in quartz ampoule 7, the voltage of optical receiver 10 is 0.2～0.4V, high when having turbidity in quartz ampoule 7 Fluid when optical receiver 10 voltage be 0.1～0.3V.

Unlike the prior art, the metering system of this utility model employing is, the electricity detecting when optical receiver 10 When pressure is less than threshold values 0.6, fluid meter just can detect fluid, when the voltage that optical receiver 10 detects is more than threshold values 0.6 When, fluid meter can't detect fluid.Because (the low fluid of the turbidity) optical receiver 10 when there being the fluid of the first turbidity Voltage be 0.2～0.4V, optical receiver 10 detect fluid threshold voltage be 0.6V that is to say, that optical receiver 10 detects To voltage be less than threshold values 0.6V when, quantifier is able to detect that fluid；Connect when the fluid time having second turbidity (turbidity is high) The voltage receiving device 10 is 0.1～0.3V, and now still less than threshold values 0.6V, quantifier still can detect the voltage of optical receiver 10 Fluid.Therefore, the metering of fluid meter convection cell of the present utility model is not affected by fluid turbidity.Institute in this utility model State the turbidity that turbidity refers to fluid.

In addition, it is necessary to explanation, the maximum that low level is allowed when referring to the input of guarantee gate by low level Input low level, rather than refer to the degree of level height, in this utility model when incoming level is less than described low level, then recognize It is low level for incoming level, now peristaltic pump quits work.

In addition, concrete methods of realizing of the present utility model and approach are a lot, the above is only of the present utility model preferred Embodiment.It should be pointed out that for those skilled in the art, before without departing from this utility model principle Put, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection domain of the present utility model.This reality Apply all available prior art of clearly not each ingredient in example to be realized.

Claims

1. a kind of fluid meter, is characterized in that：Described fluid meter include photoinduction circuit plate, peristaltic pump, be connected to compacted The pump line of dynamic pump, metrology frame, top connection, lower contact, allow fluid enter inlet and be fixedly installed in metrology frame Quartz ampoule, described metrology frame is fixed with the optical transmitting set contacting with quartz ampoule and optical receiver, one end of described top connection It is connected with quartz ampoule top, the other end of described top connection is connected with one end of pump line, one end of described lower contact and stone The bottom of English pipe is connected, and the other end of described lower contact is connected with inlet, and described optical transmitting set and optical receiver are all connected with In the photoinduction circuit for optical transmitting set and the voltage signal of optical receiver offer operating current and Real-time Collection optical receiver Plate.

2. fluid meter according to claim 1, is characterized in that：When peristaltic pump operating, when producing negative pressure, fluid passes through Inlet enters in quartz ampoule；When fluid level rises to optical receiver present position, optical receiver exports low level, compacted Dynamic pump shuts down, and carries out the metering of fluid.

3. fluid meter according to claim 2, is characterized in that：Described optical receiver detects the threshold voltage of fluid For 0.6V, when not having fluid in quartz ampoule, the voltage of optical receiver is 2 volts, when the fluid in quartz ampoule with the first turbidity When optical receiver voltage be 0.2～0.4V, when having the fluid of second turbidity in quartz ampoule, the voltage of optical receiver is 0.1～0.3V.

4. fluid meter according to claim 3, is characterized in that：When the voltage that optical receiver 10 detects is less than threshold values During 0.6V, quantifier detects fluid；When the voltage that optical receiver 10 detects is more than threshold values 0.6V, quantifier can't detect Fluid.

5. fluid meter according to claim 2, is characterized in that：When peristaltic pump negative pressure sucks fluid, fluid and pump Form air cushioning area between pipe.