CN210952293U

CN210952293U - Protection device for stabilizing dryer of float glass production line

Info

Publication number: CN210952293U
Application number: CN201922025299.7U
Authority: CN
Inventors: 何红辉; 王海波; 欧阳涛; 王毓荣
Original assignee: CSG Holding Co Ltd; Yichang CSG Photoelectric Glass Co Ltd
Current assignee: CSG Holding Co Ltd; Yichang CSG Photoelectric Glass Co Ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-07
Anticipated expiration: 2029-11-21

Abstract

The protection device for stabilizing the dryer of the float glass production line comprises a pressure transmitter arranged on an air supply pipeline of the dryer, wherein the pressure transmitter is electrically connected with a protection controller, and the protection controller is electrically connected with a regeneration exhaust valve of the dryer. In the switching process of the dryer, the instrument gas is easily discharged into the atmosphere, so that the pressure of the instrument gas is low, and the glass cannot be normally produced; through the utility model discloses, when instrument gas discharges in the atmosphere, can in time stop the unusual emission of instrument gas to ensure ultra-thin glass's normal production.

Description

Protection device for stabilizing dryer of float glass production line

Technical Field

The utility model belongs to float glass production facility field, in particular to stabilize protection device of float glass production line desiccator.

Background

The emergency stop protection device of the existing float glass production line dryer is arranged on the site of the dryer, and when the dryer is switched, instrument gas can be discharged into the atmosphere through a regeneration exhaust valve of the dryer, so that the insufficient gas supply pressure of the instrument gas is caused, the pressure of the instrument gas is reduced, and the actions of a mechanical arm and a valve can be influenced. Operators need to quickly arrive at the site for operation, and untimely handling can cause emergency shutdown of a float glass production line and even safety accidents.

Disclosure of Invention

In view of the technical problems in the background art, the protection device for stabilizing the dryer of the float glass production line provided by the utility model has the advantages that the instrument gas is easily discharged into the atmosphere in the switching process of the dryer, so that the pressure of the instrument gas is low, and the glass cannot be normally produced; through the utility model discloses, when instrument gas discharges in the atmosphere, can in time stop the unusual emission of instrument gas to ensure ultra-thin glass's normal production.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

the protection device for stabilizing the dryer of the float glass production line comprises a pressure transmitter arranged on an air supply pipeline of the dryer, wherein the pressure transmitter is electrically connected with a protection controller, and the protection controller is electrically connected with a regeneration exhaust valve of the dryer.

In a preferred scheme, the protection controller comprises an analog quantity input module, a digital quantity output module and a processing module; the input module is used for receiving an analog input signal of the pressure transmitter, the processing module is used for analyzing and comparing the magnitude of the analog input signal, and the processing module sends a digital output signal to the regeneration exhaust valve through the digital output module.

In a preferable scheme, the digital quantity output module is electrically connected with an intermediate relay, and the intermediate relay is used for controlling the opening and closing of the regeneration exhaust valve.

In a preferred scheme, the digital quantity output module is also electrically connected with an intermediate relay for alarming and an intermediate relay for emergency stop, the intermediate relay for alarming is electrically connected with an alarming device, and the intermediate relay for emergency stop is used for being connected in series in a stop control loop of the dryer.

In a preferred scheme, the alarm device is an alarm indicator lamp or an audible and visual alarm.

This patent can reach following beneficial effect:

in the switching process of the dryer, the instrument gas is easily discharged into the atmosphere, so that the pressure of the instrument gas is low, and the glass cannot be normally produced; through the utility model discloses, when instrument gas discharges in the atmosphere, can in time stop the unusual emission of instrument gas to ensure ultra-thin glass's normal production. The pressure transmitter detects the pressure value change of the instrument air pressure in real time, when the instrument air pressure is abnormal, the dryer can stop the abnormal discharge of the instrument air without going to the field operation, and the purpose of stabilizing the instrument air pressure is achieved.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is a system diagram of the present invention;

fig. 2 is a wiring diagram of the internal modules of the protection controller of the present invention;

FIG. 3 is a wiring diagram of the analog input module of the present invention;

fig. 4 is the wiring diagram of the digital output module of the present invention.

In the figure: the device comprises a dryer 1, an air supply pipeline 2, a pressure transmitter 3, a protection controller 4, an analog input module 41, a digital output module 42, a processing module 43, a regeneration exhaust valve 5 and an air source 6;

DC represents direct current;

KA represents an intermediate relay, and the number behind the KA represents the serial number of the relay;

DO represents a digital output signal;

AI denotes an analog input signal.

Detailed Description

As shown in fig. 1 to 4, a protection device for stabilizing a dryer in a float glass production line includes a pressure transmitter 3 disposed on an air supply pipe 2 of the dryer 1, the pressure transmitter 3 is electrically connected with a protection controller 4, and the protection controller 4 is electrically connected with a regeneration exhaust valve 5 of the dryer 1. As shown in fig. 1, the gas supply line 2 is supplied with gas from a gas source 6, typically a gas supply station; when the dryer 1 is switched, the regeneration exhaust valve 5 of the dryer 1 is opened, the pressure of the gas supply pipeline 2 is reduced, the pressure of the whole instrument gas supply system is fluctuated, and the normal operation of the glass cutting equipment, such as a mechanical arm, a pneumatic valve and the like, is possibly influenced. In the technical scheme, the pressure transmitter 3 detects the reduction of the air supply pressure of the air supply pipeline 2, and the regeneration exhaust valve 5 is controlled to be closed in time through the protection controller 4, so that the fluctuation of the air source pressure is avoided in a short time, the abnormal exhaust of the instrument air is stopped in time, and the normal production of glass manufacturing is ensured.

Further, the protection controller 4 includes an analog input module 41, a digital output module 42 and a processing module 43; the input module 41 is used for receiving an analog input signal of the pressure transmitter 3, the processing module 43 is used for analyzing and comparing the magnitude of the analog input signal, and the processing module 43 sends a digital output signal to the regeneration exhaust valve 5 through the digital output module 42.

As shown in FIG. 2, the type of the processing module 43 may be CPU315-2DP, and the CPU315-2DP is a CPU with medium/large scale program size and PROFIBUS DP master/slave interface. It can constitute a distributed automation structure in addition to a centralized I/O structure. The analog input module 41 and the digital output module 42 are both input and output ends of the model processing module.

Further, the digital output module 42 is electrically connected with an intermediate relay, and the intermediate relay is used for controlling the opening and closing of the regeneration exhaust valve 5. The on-off signal of the digital quantity output module 42 is electrically connected with the coil of the intermediate relay, and the normally open or normally closed contact of the intermediate relay is connected with the power supply of the regeneration exhaust valve 5 in series, because the type of the regeneration exhaust valve 5 can be an air-closed valve or an air-open valve, the normally open or normally closed contact of the intermediate relay is selected according to the regeneration exhaust valve 5, and the regeneration exhaust valve 5 is not required to be opened as long as the dryer 1 is switched.

Further, as shown in fig. 4, the digital output module 42 is further electrically connected to an intermediate relay 42.1 for alarm and an intermediate relay 42.2 for emergency stop, the intermediate relay 42.1 for alarm is electrically connected to an alarm device, and the intermediate relay 42.2 for emergency stop is configured to be connected in series in a stop control loop of the dryer 1. An alarm threshold value and an emergency stop threshold value are set, and when the pressure detected by the pressure transmitter 3 reaches the corresponding threshold value, the alarm intermediate relay 42.1 or the emergency stop intermediate relay 42.2 acts.

Furthermore, the alarm device is an alarm indicator lamp or an audible and visual alarm. The alarm indicator lamp or the audible and visual alarm mainly plays a role in prompting and reminding workers of paying attention. The optical alarm signal may select LTE-1101J.

The working principle of the whole device is as follows:

assuming that the normal pressure of the gas supply pipeline 2 is 0.4MPa, the instrument gas is discharged into the atmosphere in the switching process of the dryer, the pressure of the gas supply pipeline 2 is reduced to 0.35MPa at the moment, the action threshold of the protection controller 4 is reached, the protection controller 4 outputs a digital quantity signal to the intermediate relay, the coil of the intermediate relay is electrified, the regeneration exhaust valve 5 is controlled to be closed, the pressure reduction of the gas supply pipeline 2 is avoided, and therefore the operation of other equipment is influenced. If the pressure of the gas supply pipeline 2 is remarkably reduced to 0.3MPa, the intermediate relay 42.1 for alarming is actuated, the pressure of the gas supply pipeline 2 is reduced to a lower position, and the intermediate relay 42.2 is suddenly stopped to actuate.

Claims

1. The utility model provides a stabilize protection device of float glass production line desiccator which characterized in that: the device comprises a pressure transmitter (3) arranged on an air supply pipeline (2) of a dryer (1), wherein the pressure transmitter (3) is electrically connected with a protection controller (4), and the protection controller (4) is electrically connected with a regeneration exhaust valve (5) of the dryer (1).

2. The protection device for stabilizing a float glass line dryer of claim 1, wherein: the protection controller (4) comprises an analog quantity input module (41), a digital quantity output module (42) and a processing module (43); the input module (41) is used for receiving an analog quantity input signal of the pressure transmitter (3), the processing module (43) is used for analyzing and comparing the magnitude of the analog quantity input signal, and the processing module (43) sends a digital quantity output signal to the regeneration exhaust valve (5) through the digital quantity output module (42).

3. The protection device for stabilizing a float glass line dryer of claim 2, wherein: the digital quantity output module (42) is electrically connected with an intermediate relay, and the intermediate relay is used for controlling the opening and closing of the regeneration exhaust valve (5).

4. The protection device for stabilizing a float glass line dryer of claim 3, wherein: the digital quantity output module (42) is also electrically connected with an intermediate relay (42.1) for alarming and an intermediate relay (42.2) for emergency stop, the intermediate relay (42.1) for alarming is electrically connected with an alarming device, and the intermediate relay (42.2) for emergency stop is used for being connected in series in a stop control loop of the dryer (1).

5. The protection device for stabilizing a float glass line dryer of claim 4, wherein: the alarm device is an alarm indicator lamp or an audible and visual alarm.