CN216557500U

CN216557500U - Workshop VOCs monitoring and VOCs purification emergency system who airs exhaust antithetical couplet and use

Info

Publication number: CN216557500U
Application number: CN202122577093.2U
Authority: CN
Inventors: 许益超; 胡凯丽; 邵杰辉; 李霖
Original assignee: Blue Sky Environmental Technology Co ltd
Current assignee: Blue Sky Environmental Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-17
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a VOCs purification emergency system for workshop VOCs monitoring and exhaust, which automatically controls a VOCs purifier, an exhaust fan, an alarm and a three-way valve by arranging a centralized control host; set up VOCs monitor and return air pipe in return air inlet department, monitor whether workshop VOCs concentration satisfies the environmental protection requirement and in the 25% safety range of explosion limit lower limit concentration through the VOCs monitor. If the environment-friendly requirement is not met but the lower limit concentration of the explosion limit is below 25%, the system enters the VOCs purifier from the return air pipe under the control of the centralized control host, and the VOCs concentration of the workshop reaches the standard through the treatment of the VOCs purifier, so that the harm to staff is reduced and the environment-friendly standard is reached; if the concentration of VOCs in the workshop reaches or exceeds 25% of the lower limit concentration of the explosion limit of the workshop under emergency, the alarm gives an alarm in time under the control of the centralized control host, and the workshop airflow is subjected to gas exchange in time under the action of the exhaust fan, so that the emergency disposal effect is achieved, and the workshop explosion is avoided.

Description

Workshop VOCs monitoring and VOCs purification emergency system who airs exhaust antithetical couplet and use

Technical Field

The utility model belongs to the technical field of workshop VOCs control, and particularly relates to a VOCs purification emergency system for workshop VOCs monitoring and exhaust.

Background

At present, according to the relevant laws and regulations of national environmental protection, VOCs purification devices are installed in a certain part of workshops of industrial enterprises, but most of the VOCs purification devices are directed to specific technological processes or technological equipment, and the VOCs treatment of the whole workshop is not considered comprehensively. Meanwhile, when the concentration of VOCs in the whole workshop reaches a high concentration, the method is not only harmful to the human health of staff and possibly generates the condition that the gas is discharged outside to pollute the environment, but also faces the danger of explosion.

Disclosure of Invention

The utility model aims to provide a VOCs purification emergency system combining workshop VOCs monitoring and exhaust aiming at the problems that the existing workshop VOCs monitoring and processing range is small, and the VOCs in the workshop is in high-value concentration, so that the VOCs monitoring and processing range in the workshop is enlarged, the utilization rate of VOCs purifiers is improved, and the workshop explosion risk is eliminated, and the specific technical scheme is as follows:

a workshop VOCs monitoring and exhaust combined VOCs purification emergency system comprises a centralized control host, a workshop VOCs purifier, an air outlet pipe communicated with an air outlet of the workshop VOCs purifier, an air inlet pipe communicated with an air inlet of the workshop VOCs purifier, a three-way valve arranged on the air inlet pipe, an exhaust fan communicated with the air inlet pipe three-way valve, and an exhaust fan connected with the air inlet pipe three-way valve; the return air pipe is communicated with the exhaust fan; an air return port positioned in the workshop is formed in one side, far away from the exhaust fan, of the air return pipe; a gas filter screen is arranged at the air return opening, and a VOCs monitor is arranged at the air return opening; the VOCs monitor is connected with the alarm in series; VOCs monitor, three-way valve, air exhauster and exhaust fan all with centralized control host computer electric connection.

Furthermore, in order to prevent foreign matters from entering the return air pipe or being discharged into the external environment, the return air inlet is provided with a gas filter screen.

Further, the air return inlet is provided with a VOCs monitor, and the VOCs monitor is connected with the air return inlet in parallel.

Further, the centralized control host is a programmable controller.

Further, the centralized control host is a PLC controller.

Further, the centralized control host has a liquid crystal display.

Further, the VOCs monitor is connected with the alarm in series. In traditional workshop, lack the detection to workshop VOCs gas concentration, do not possess the alarming function to VOCs concentration simultaneously, through set up VOCs monitor and alarm in whole emergency system among this technical scheme to with both series connection, realized monitoring and alarming function to workshop VOCs concentration.

Furthermore, the alarm has two functions of an alarm lamp and a buzzer. Through such setting, can make industrial enterprise in time master workshop VOCs concentration effectively.

Further, the VOCs monitor is used with an exhaust fan in the whole system.

Furthermore, the exhaust fan is connected with an air inlet pipe communicated with an air inlet of the workshop VOCs purifier through a three-way valve. The volume that workshop gas discharged to the atmosphere and the volume of carrying the VOCs clarifier can be adjusted to the three-way valve, and when VOCs concentration reached 25% of explosion limit lower limit concentration in the workshop like this, both can directly discharge to the atmosphere, can carry again to the VOCs clarifier in, reach and avoid the workshop explosion promptly and realize the treatment effect to the gaseous maximum of VOCs again.

The VOCs purification emergency system for workshop VOCs monitoring and exhaust combination has the advantages that the system can monitor and process the concentration value of VOCs in the gas environment of the whole workshop under daily conditions, improve the utilization rate of a VOCs purification processor and provide a working environment which meets the environmental protection requirement and is harmless to human health; meanwhile, the occurrence of explosion of VOCs gas in a workshop can be avoided, and the VOCs detector and the exhaust fan are used in a combined mode, so that the VOCs gas in the workshop is timely and emergently discharged to the external environment when the concentration value of the VOCs gas reaches 25% of the lower limit concentration of the explosion limit, and the loss of life safety and property is reduced.

Drawings

Fig. 1 is a control schematic diagram of a plant VOCs monitoring and exhaust combined VOCs purification emergency system according to the present invention.

Fig. 2 is a schematic structural view of a VOCs purification emergency system for monitoring and exhausting VOCs in a workshop.

Reference numerals: 1. the system comprises a centralized control host, 2. a workshop VOCs purifier, 3. an air inlet pipe, 4. a three-way valve, 5. an exhaust fan, 6. a return air pipe, 7. a return air inlet, 8. a gas filter screen, 9. a VOCs monitor, 10. an alarm and 11. an exhaust fan; 12. an air outlet pipe; in the figure, solid arrows represent the direction of air flow, and dashed lines represent the direction of signal flow.

Detailed Description

The technical solutions in the embodiments of the present invention will be further clearly and completely described in the following detailed description in conjunction with the accompanying drawings and the detailed description in the embodiments of the present invention, and the described examples are only a part of the embodiments of the present invention, but not all of the embodiments, that is, the real-time mode of the present invention is not limited to the described examples:

as shown in fig. 1 and 2, the workshop VOCs monitoring and exhaust combined VOCs purification emergency system comprises a workshop VOCs monitoring and exhaust combined VOCs purification emergency system, and comprises a centralized control host, a workshop VOCs purifier, an air outlet pipe communicated with an air outlet of the workshop VOCs purifier, an air inlet pipe communicated with an air inlet of the workshop VOCs purifier, a three-way valve arranged on the air inlet pipe, an exhaust fan communicated with the air inlet pipe three-way valve, and an exhaust fan connected with the air inlet pipe three-way valve; the return air pipe is communicated with the exhaust fan; an air return port positioned in the workshop is formed in one side, far away from the exhaust fan, of the air return pipe; a gas filter screen is arranged at the air return opening, and a VOCs monitor is arranged at the air return opening; the VOCs monitor is connected with the alarm in series; VOCs monitor, three-way valve, air exhauster and exhaust fan all with centralized control host computer electric connection.

In order to prevent foreign matters from entering the return air pipe or being discharged into the external environment, the return air inlet is provided with a gas filter screen.

The air return port is provided with a VOCs monitor, and the VOCs monitor is connected with the air return port in parallel.

Wherein, the centralized control host is a programmable controller.

Wherein, the centralized control host computer is a PLC controller.

Wherein, the centralized control host computer is provided with a liquid crystal display.

In order to realize the monitoring and alarming functions of the concentration of VOCs in the workshop, the VOCs monitor is connected with the alarm in series. In traditional workshop, lack the detection to workshop VOCs gaseous concentration, do not possess the alarming function to VOCs concentration simultaneously, through set up VOCs monitor and alarm in whole emergency system among this technical scheme to with both series connection, reached the beneficial effect to workshop VOCs concentration monitoring and warning.

The alarm has two functions of an alarm lamp and a buzzer. Through such setting, can make industrial enterprise in time master workshop VOCs concentration effectively.

Wherein, the VOCs monitor is used with the exhaust fan in entire system.

In order to improve the application effect of the utility model, the exhaust fan is arranged on an air inlet pipe communicated with the air inlet of the workshop VOCs purifier through a three-way valve. The volume that workshop gas discharged to the atmosphere and the volume of carrying the VOCs clarifier can be adjusted to the three-way valve, and when VOCs concentration reached 25% of explosion limit lower limit concentration in the workshop like this, both can directly discharge to the atmosphere, can carry again to the VOCs clarifier in, reach and avoid the workshop explosion promptly and realize the treatment effect to the gaseous maximum of VOCs again.

The working process of the VOCs purification emergency system for monitoring and exhausting VOCs in a workshop is as follows:

under the working state, the VOCs monitor 9 monitors the VOCs concentration value in the workshop in real time, corresponding information is transmitted to the centralized control host 1, and the centralized control host 1 judges the VOCs concentration value in the workshop according to the system preset value. When the centralized control host 1 judges that the concentration value of the VOCs meets the standard, the centralized control host 1 sends a signal to ensure that the control exhaust fan 5 is closed, the exhaust fan 11 is closed, the three-way valve 4 is closed, and the alarm 10 is started; when the centralized control host 1 judges that the concentration value of the VOCs does not reach the standard but is below 25% of the lower limit concentration of the explosion limit of the VOCs, the centralized control host 1 sends a signal to control the exhaust fan 11 to be closed, the valve 1 of the three-way valve 4 to be closed and the valve 2 to be opened, the exhaust fan 5 to be opened, the VOCs purifier 2 to be opened, the alarm 10 sends the buzzer 1 and flickers a red signal lamp, at the moment, workshop airflow enters the VOCs purifier 2 from the workshop return air pipe 6 through the valve 2 of the three-way valve 4 from the purifier air inlet pipe 3 under the action of the exhaust fan 5, then is discharged into the workshop from the purifier air outlet pipe 12 after being processed by the VOCs purifier 2, and the state is continued until the VOCs monitor 10 monitors that the concentration value of the VOCs in the workshop reaches the standard in real time; when the centralized control host 1 judges that the concentration value of the VOCs does not reach the standard and the concentration value reaches or exceeds 25% of the lower limit concentration of the explosion limit, the centralized control host 1 sends a signal, the control exhaust fan 5 is opened, the exhaust fan 11 is opened, the valves No. 1 and No. 2 of the three-way valve 4 are both opened, the alarm 10 sends a No. 2 buzzer and flashes a red signal lamp, at the moment, the workshop airflow reaches the three-way valve 4 under the action of the exhaust fan 5 and then has two downstream passages, one is that the airflow is discharged out through the valve No. 1 of the three-way valve 4 in an emergency manner under the action of the exhaust fan 11, the other is that the workshop airflow enters the VOCs purifier 2 through the air inlet pipe by the valve No. 2 of the three-way valve 4, then is discharged into the workshop through the air outlet pipe 12 of the purifier after being processed by the VOCs purifier 2, the state is continued until the VOCs monitor 9 monitors that the concentration value in the workshop reaches the concentration value in real time, and the centralized control host 1 adjusts the size of the gas discharged through the fan 11 and the air inflow size of the VOCs purifier 2 according to needs in the process, thereby realizing the design efficacy of the system to the maximum extent. In the using process of the whole system, the VOCs monitor 9 and the alarm 10 are both in a normally open state, and the display screen of the centralized control host 1 displays the VOCs concentration value of the workshop and the working state of related equipment and parts in real time.

It should be noted that the scope of the present invention is not limited to the above embodiments, and those skilled in the art should be considered as the scope of the present invention by changing or replacing the embodiments based on the concept of the present invention.

Claims

1. The utility model provides a workshop VOCs monitoring and VOCs purification emergency system of alliing oneself with usefulness of airing exhaust which characterized in that: the system comprises a centralized control host (1), a workshop VOCs purifier (2), an air outlet pipe (12) communicated with an air outlet of the workshop VOCs purifier (2), an air inlet pipe (3) communicated with an air inlet of the workshop VOCs purifier (2), a three-way valve (4) arranged on the air inlet pipe, an exhaust fan (5) communicated with the air inlet pipe three-way valve (4), and an exhaust fan (11) connected with the air inlet pipe three-way valve (4); a return air pipe (6) communicated with the exhaust fan (5); an air return opening (7) in the workshop is formed in one side, far away from the exhaust fan (5), of the air return pipe (6); a gas filter screen (8) is arranged at the air return opening (7), and a VOCs monitor (9) is arranged at the air return opening (7); the VOCs monitor (9) is connected with the alarm (10) in series; VOCs monitor (9), air exhauster (5) and exhaust fan (11) all with centralized control host computer (1) electric connection.

2. The VOCs of claim 1 monitoring and exhaust combined VOCs purification emergency system, characterized in that: and the VOCs monitor (9) is connected with the air return inlet (7) in parallel.

3. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: the centralized control host (1) is a programmable controller.

4. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: the centralized control host (1) is a PLC controller.

5. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: the centralized control host (1) is provided with a liquid crystal display.

6. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: the VOCs monitor (9) is connected with the alarm (10) in series.

7. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: the alarm (10) has two functions of an alarm lamp and a buzzer.

8. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: VOCs monitor (9) and exhaust fan (11) are used jointly in entire system.

9. The VOCs of claim 1 monitoring and exhaust combined VOCs purifying emergency system, characterized in that: exhaust fan (11) through three-way valve (4) set up with on air-supply line (3) of workshop VOCs clarifier (2) air intake intercommunication.