CN202677207U

CN202677207U - High-precision glass liquid level automatic control apparatus

Info

Publication number: CN202677207U
Application number: CN 201220161144
Authority: CN
Inventors: 肖跃中
Original assignee: HUNAN SHENGCHAGN GLASS CO Ltd
Current assignee: HUNAN SHENGCHAGN GLASS CO Ltd
Priority date: 2012-04-17
Filing date: 2012-04-17
Publication date: 2013-01-16
Anticipated expiration: 2022-04-17

Abstract

The utility model discloses a high-precision glass liquid level automatic control apparatus. The apparatus consists of three parts of a glass liquid level intermittent detection mechanism, a measurement mechanism and a control mechanism. A probe (3) performs vertical reciprocating motions between the glass liquid level and a preset height, the reciprocating motions are carried out under the control of a programmable controller (13) and a relay (15) of the control mechanism and driven by a reversible motor (11); during the raising process of the probe (3), a lever (6) touches an upper limit stopper (9), and the programmable controller (13) sends a warning signal and commands the probe (3) to move downwards. The high-precision glass liquid level automatic control apparatus provided by the utility model has the advantages of high glass-liquid-level control precision, and stable performance, being suitable for glass industrial production.

Description

The high-accuracy glass liquid level control device

Technical field

The utility model relates to a kind of high-accuracy glass liquid level control device for high temp glass level gauging and control.

Background technology

Measurement and the control mode of the high temp glass liquid level of present domestic glass production enterprise are: adopt differential transmitter, change by magnetoelectricity, the upper and lower displacement signal of glass liquid level is converted to electric signal, be transformed into the 0-10V DC voltage through electron-amplifier, this voltage is input to the inventory of Frequency Converter Control batch charger, makes glass liquid level keep stable.Because the magnetoelectricity conversion accuracy of differential transmitter is low, and electron-amplifier also has error, and therefore, the control accuracy of glass liquid level is lower, can not satisfy the production requirement of high quality glass.

Summary of the invention

For the deficiency that above-mentioned technology exists, the utility model provides a kind of high-accuracy glass liquid level control device, and this device can increase substantially the control accuracy of glass liquid level.

For achieving the above object, the technical scheme of taking of the present utility model is: a kind of high-accuracy glass liquid level control device for high temp glass level gauging and control, formed by glass liquid level detection agency at intermittence, measuring mechanism, control gear three parts, it is characterized by:

Described glass liquid level intermittently detection agency is comprised of probe (3), lever (6), lever support (7), mechanical drive (10), reversible electric machine (11), relay (15), probe (3) is in vertical reciprocating motion between metal level and assigned altitute, its to-and-fro movement is driven by reversible electric machine (11) by Programmable Logic Controller (13), the relay (15) of control section; Reversible electric machine (11) drives off and on detecting glass liquid level height of probe (3) through mechanical drive (10) and lever (6), be converted into the 0-10V voltage signal and be sent to analog-to-digital conversion module (A/D) (16) by the change in displacement of electronic ruler (12) with metal level, analog signal conversion is become digital signal, send into again Programmable Logic Controller (13).

Described control gear has comprised that lower limit stop (8), upper limit stop (9), electronic relay (14), relay (15), Programmable Logic Controller (13), conversion accuracy are 4/10000ths D/A converter modules (D/A) (17), frequency converter (21), batch charger (22), probe (3) contact metal level is sent to electronic relay (14) through high temperature resistant wire (5) by whether signal, the open and close of control electronic relay (14), this open and close signal is input to Programmable Logic Controller (13); Programmable Logic Controller (15) is converted to simulating signal to digital controlled signal through D/A converter module (D/A) (17) after preset program calculates, be sent to frequency converter (18), the inventory of control batch charger (19).

Described measuring mechanism has comprised that precision is that 7/10000ths electronic ruler (12), conversion accuracy are 4/10000ths analog-to-digital conversion module (A/D) (16) and the internal calculation module of Programmable Logic Controller (13).

Beneficial functional of the present utility model is: a kind of high-accuracy glass liquid level control device, have the advantages such as control glass liquid level precision is high, stable and reliable for performance, and be widely used in glass industry production.

Description of drawings

Fig. 1 is the utility model contour structures schematic diagram;

Fig. 2 is control circuit schematic diagram of the present utility model.

Marginal data:

Glass furnace (1); glass metal (2); probe (3); probe protection sleeve pipe (4); the high temperature resistant wire of linking probe (5); lever (6) and; lever support (7); upper limit stop (8); lower limit stop (9); mechanical drive (10); reversible electric machine (11); electronic ruler (12); Programmable Logic Controller (13;) electronic relay (14); relay (15); analog-to-digital conversion module (A/D) (16); D/A converter module (D/A) (17); frequency converter (18); batch charger (19).

Embodiment

This high-accuracy glass liquid level control device is implemented by following steps:

The first step: the power supply of opening an account, Programmable Logic Controller (13) sends instruction, rotates by relay (15) control reversible electric machine (11), drives probe (3) through mechanical drive (10) and descends;

Second step: probe (3) is sent to electronic relay (14) through high temperature resistant wire (5) when touching metal level, the open and close of control electronic relay (14), and this open and close signal is input to Programmable Logic Controller (13);

The 3rd step: according to the open and close signal, Programmable Logic Controller (13) sends instruction, and reversible electric machine (11) is stopped operating the 0.1s time, keeps probe (3) reliably to touch metal level, and then probe (3) rises;

The 4th step: Programmable Logic Controller (13) sends instruction, and probe (3) rises the approximately 10 s times, reaches assigned altitute, and then probe (3) descends;

The 5th step: mechanical drive (10) drives lever (12), makes electronic ruler (12) send the 0-10V simulating signal, converts digital signal to through analog-to-digital conversion module (A/D) (16), sends into Programmable Logic Controller (13) again;

The 6th step: Programmable Logic Controller (13) is converted to simulating signal to digital controlled signal through D/A converter module (D/A) (17), is sent to frequency converter (18), the inventory of control batch charger (19).

The 7th the step: if probe (3) in the decline process, lever (6) touches lower limit stop (8), Programmable Logic Controller (13) sends alerting signal, and instruction probe (3) moves upward;

The 8th the step: if probe (3) in uphill process, lever (6) touches upper limit stop (9), Programmable Logic Controller (13) sends alerting signal, and instruction probe (3) moves downward.

Claims

1. high-accuracy glass liquid level control device, intermittently detection agency, measuring mechanism, control gear three parts form by glass liquid level, it is characterized by: described glass liquid level intermittently detection agency is comprised of probe (3), lever (6), lever support (7), mechanical drive (10), reversible electric machine (11), relay (15), probe (3) is in vertical reciprocating motion between metal level and assigned altitute, its to-and-fro movement is driven by reversible electric machine (11) by Programmable Logic Controller (13), the relay (15) of control section; Reversible electric machine (11) drives off and on detecting glass liquid level height of probe (3) through mechanical drive (10) and lever (6), be converted into the 0-10V voltage signal and be sent to analog-to-digital conversion module (A/D) (16) by the change in displacement of electronic ruler (12) with metal level, analog signal conversion is become digital signal, send into again Programmable Logic Controller (13).

2. a kind of high-accuracy glass liquid level control device according to claim 1, it is characterized by: described control gear has comprised lower limit stop (8), upper limit stop (9), electronic relay (14), relay (15), Programmable Logic Controller (13), conversion accuracy is 4/10000ths D/A converter modules (D/A) (17), frequency converter (21), batch charger (22), probe (3) contact metal level is sent to electronic relay (14) through high temperature resistant wire (5) by whether signal, the open and close of control electronic relay (14), this open and close signal is input to Programmable Logic Controller (13); Programmable Logic Controller (15) is converted to simulating signal to digital controlled signal through D/A converter module (D/A) (17) after preset program calculates, be sent to frequency converter (18), the inventory of control batch charger (19).

3. a kind of high-accuracy glass liquid level control device according to claim 1 is characterized by: described measuring mechanism has comprised that precision is that 7/10000ths electronic ruler (12), conversion accuracy are 4/10000ths analog-to-digital conversion module (A/D) (16) and the internal calculation module of Programmable Logic Controller (13).