CN201138234Y

CN201138234Y - Liquid material dynamic metering equipment

Info

Publication number: CN201138234Y
Application number: CNU2007201928959U
Authority: CN
Inventors: 夏国泰
Original assignee: HANGZHOU IDEA PRECISION MACHINERY CO Ltd
Current assignee: HANGZHOU IDEA PRECISION MACHINERY CO Ltd
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2008-10-22
Anticipated expiration: 2017-11-29

Abstract

The utility model relates to a dynamic measurement device for liquid materials, which primarily comprises a tank A and a tank B. A material inlet is communicated with the input end of an interference elimination cylinder through a master valve. The output end of the interference elimination cylinder is communicated with the input ends of the tank A and the tank B through a second valve and a first valve respectively. The output end of the tank A is communicated with a material outlet through a fourth valve and a second maze. The output end of the tank B is communicated with the material outlet through a third valve and a first maze. The fourth valve and the third valve are connected with and controlled by a programmable controller. The tank A and the tank B are supported by three sensors respectively. The sensors are connected with a computer through a first instrument and a second instrument respectively. The dynamic measurement device for liquid materials has the advantages that the dynamic measurement is converted into alternate static measurement, namely, the difficult dynamic measurement is converted into well-developed high accuracy static weighing. When blast protection is required, a blast protection instrument, valves and sensors can be used. The dynamic measurement device can be installed indoors, outdoors or carried on vehicles to the site, thus achieving on-line detection.

Description

The dynamic measurement equipment of liquid material

Technical field

The utility model relates to the metering outfit field, mainly is a kind of dynamic measurement equipment of liquid material.

Background technology

Present equipment, if liquid stream is interrupted, can not be as the dynamic flow standard, accuracy of measurement is relatively poor; The flow in total flow or stipulated time can't be measured, online detection can not be realized; Can not realize the dispensing of liquid material.

Summary of the invention

The utility model purpose is the shortcoming that will solve above-mentioned prior art, and a kind of dynamic measurement equipment of liquid material is provided.

The utility model solves the technical scheme that its technical matters adopts: the dynamic measurement equipment of this liquid material, mainly comprise first jar and second jar, material inlet disturbs the input end of tube to be connected by main valve and elimination, eliminate and disturb the output terminal of tube to be connected with the input end of first jar, second jar respectively by second valve, first valve, first jar output terminal is connected with material outlet by the 4th valve, second labyrinth, second jar output terminal is connected with material outlet by the 3rd valve, first labyrinth, and the 4th valve is connected with Controlled by Programmable Controller respectively with the 3rd valve; Each supports first jar and second jar with three sensors, and the sensor reduction of fractions to a common denominator is not connected with computing machine by first instrument, second instrument.

Be equipped with antifog net on described first jar and the second jar.

" point-line-surface " structure is adopted in described sensor supporting, and " point " structure adopts the supporting of point-like sensor, and " line " structure adopts the line sensor supporting, and " face " structure adopts planar sensor supporting.

The effect that the utility model is useful is: 1, the dynamic measurement problem is converted into static weighing measurement problem alternately and solves, promptly difficult dynamic measurement problem is converted into static weighing problem ripe, pin-point accuracy and solves; 2, the accuracy of used Weighing method can be traced to the source, and the flow value that records, and is that unit expresses with the quality kilogram all; 3, when requiring when explosion-proof available explosion-proof instrument, valve and sensor; 4, can be installed in indoor, the outdoor or vehicle-mounted scene of arriving, easily realize online detection; This patent equipment can be installed on the transport vehicle, vehicle-mountedly carries out online detection to the working site, and the Sheng liquid weight of each gravimetric tank can be decided on feelings about 0.5～2 ton; 5, except the big measuring accuracy of viscosity again the higher flows metering because of adhesion in pipeline more, all applicable; 6, this patent equipment and temperature of charge, environment temperature, temperature variation, material proportion, operational throughput, discharge pressure and atmospheric pressure ... irrelevant etc. physical factor; 7, solved the influence of the problem of expanding with heat and contract with cold on the structure to metering precision; 8, totally-domestic, cost is lower.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a labyrinth structure synoptic diagram of the present utility model;

Fig. 3 is a first jar part arrangement synoptic diagram of the present utility model;

Fig. 4 is a point-like sensor supporting structure synoptic diagram of the present utility model;

Fig. 5 is a line sensor supporting structure synoptic diagram of the present utility model;

Fig. 6 is a planar sensor supporting structure synoptic diagram of the present utility model.

Description of reference numerals: 1-eliminates and disturbs tube, 2-main valve, 3-first valve, 4-second valve, the 5-sensor, 6-first jar, 7-second jar, 8-weights platform, 9-the 3rd valve, 10-the 4th valve, 11-first labyrinth, 12-second labyrinth, 13-Programmable Logic Controller, 14-first instrument, the 15-computing machine, 16-second instrument, the antifog net of 17-, the supporting of 18-point-like sensor, the supporting of 19-line sensor, the planar sensor supporting of 20-.

Embodiment

Below in conjunction with accompanying drawing and concrete mode the utility model is described in further detail.

As shown in the figure, the dynamic measurement equipment of this liquid material mainly comprises first jar 6 and second jar 7, is equipped with antifog net 17 on first jar 6 and the second jar 7.Material inlet is by main valve 2 and eliminate and disturb the input end of tube 1 to be connected, and the liquid material at first disturbs tube 1 through eliminating, and the liquid material that guarantees to enter this device is not subjected to the interference of back valve switch action.Eliminate and disturb the output terminal of tube 1 to be connected with the input end of first jar 6, second jar 7 respectively by second valve 4, first valve 3, first jar 6 output terminals are connected with material outlet by the 4th valve 10, second labyrinth 12, second jar 7 output terminals are connected with material outlet by the 3rd valve 9, first labyrinth 11, the 4th valve 10 and the 3rd valve 9 respectively with Programmable Logic Controller 13 control linkages; Respectively with 5 supportings of three sensors, sensor 5 reduction of fractions to a common denominators are not connected with computing machine 15 by first instrument 14, second instrument 16 for first jar 6 and second jar 7.

This installs presses table one " operation controlled step " work, and Fig. 4-" point-line-surface " structure shown in Figure 6 is adopted in supporting place of LOAD CELLS, and presses Fig. 3 principle and arrange installation, in order to avoid the influence that variation of ambient temperature, temperature of charge variation and malformation bring." point-line-surface " structure is adopted in described sensor 5 supportings, and " point " structure adopts point-like sensor supporting 18, constitutes with steel ball; " line " structure adopts line sensor supporting 19, and it is the upper and lower structure that is blade, edge bearing, uses polytetrafluoroethylene plate one deck between blade and the edge bearing; " face " structure adopts planar sensor supporting 20, the upper and lower plane that is, and two interplanars have polytetrafluoroethylene plate one deck.First jar 6 and second jar 7 respectively have counterweight platform 8 one circles, are convenient to place when needed the weighing accuracy that counterweight is calibrated each jar.For guaranteeing to weigh accurately,

first jar

6,7 two jars of exits of second jar are with second labyrinth 12, first labyrinth, 11 labyrinth structures.Structure is seen Fig. 2.

Principle of work: what this patent related to is the equipment of metering liquid object flow under dynamic condition, compare with at present used flowmeter, groove tank car, big jar or quantitative pot metering, this patent equipment and certain viscosity, liquid material proportion, liquid material temperature, environment temperature, temperature variation, operational throughput, discharge pressure ... irrelevant etc. physical factor, and can directly measure total flow ... etc. parameter.This patent can be traced to the source, and with the material of the input of ceaselessly flowing, with two jars that are used alternatingly, the back of alternately weighing adds up to handle to delivery value.The accuracy height of each jar weighing, this measuring accuracy is not subjected to the influence of valve switch.

After three LOAD CELLS 5 parallel connections of gravimetric tank (first jar 6 and second jar 7), one tunnel input weighing instrument (first instrument 14, second instrument 16), through 232～UBS interface convertor value of weighing, directly send into computing machine 15 and carry out according to data processing with first jar 6 and second jar 7.Another road of LOAD CELLS 5 is through voltage to frequency converter, after being switched by PLC relay output interface, sends into the input interface of photoelectric encoder, will the value of weighing delivers to GC series touch-screen and carries out the weight demonstration.First instrument 14, second instrument 16 definite value alerting signals input to PLC through the PLC input port, start and stop each solenoid valve by the relay delivery outlet of PLC.The startup of gravimetric tank (first jar 6 and second jar 7) and stopping is by the startup of GC series touch-screen setting with stop button and finish.After the system start-up, finish system's control by PLC, finish data acquisition, processing and printing by computer system by the special software of table one establishment.

The characteristics of this utility patent:

1. can be used as the dynamic flow standard, the accuracy height.Measured flux is big more, and then accuracy is high more;

2. measure the flow in total flow or stipulated time, whether be interrupted irrelevant with liquid stream;

3. online detection;

4. equipment can be placed on the car, vehicle-mountedly carry out on-the-spot test to the workplace;

5. when with explosion-proof instrument, valve and explosion-proof sensor, can be applicable to the occasion of requirement of explosion proof;

6. the liquid material dispensing that is suitable for;

7. the batching of Shi Yonging.

Table one operation controlled step

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1, a kind of dynamic measurement equipment of liquid material, it is characterized in that: mainly comprise first jar (6) and second jar (7), material inlet disturbs the input end of tube (1) to be connected by main valve (2) and elimination, eliminate the output terminal that disturbs tube (1) and pass through second valve (4), first valve (3) respectively with first jar (6), the input end of second jar (7) is connected, first jar (6) output terminal is by the 4th valve (10), second labyrinth (12) is connected with material outlet, second jar (7) output terminal is by the 3rd valve (9), first labyrinth (11) is connected with material outlet, the 4th valve (10) and the 3rd valve (9) respectively with Programmable Logic Controller (13) control linkage; Each supports first jar (6) and second jar (7) with three sensors (5), and sensor (5) reduction of fractions to a common denominator is not connected with computing machine (15) by first instrument (14), second instrument (16).

2, the dynamic measurement equipment of liquid material according to claim 1 is characterized in that: be equipped with antifog net (17) on described first jar (6) and the second jar (7).

3, the dynamic measurement equipment of liquid material according to claim 1, it is characterized in that: " point-line-surface " structure is adopted in described sensor (5) supporting, " point " structure adopts point-like sensor supporting (18), " line " structure adopts line sensor supporting (19), and " face " structure adopts planar sensor supporting (20).