Low-energy-consumption exhaust system

Abstract

The utility model relates to an exhaust system with low energy consumption, which comprises an exhaust pipe fitting and an air source, the exhaust pipe fitting comprises an exhaust main pipe and an exhaust branch pipe, one end of the exhaust main pipe is closed, the other end of the exhaust main pipe is communicated with a recovery tower, one end of the exhaust branch pipe is communicated with the exhaust main pipe, and the other end of the exhaust branch pipe is communicated with the recovery tower. One end of the exhaust branch pipe extends to the top of the harmful gas source, the air source comprises a first air draft part and a second air draft part, the first air draft part is installed on the exhaust main pipe, the second air draft part is installed on the exhaust branch pipe, and the power of the second air draft part is adjustable according to the concentration of gas to be extracted at the top of the harmful gas source; when the air above the harmful air source is normal, only the first air draft part works to facilitate detection of the extracted air, at the moment, the power of the first air draft part is low, and when the air above the harmful air source is abnormal, the second air draft part is started to quickly extract the abnormal air, so that the high-power uninterrupted operation of the first air draft part can be avoided, and the energy consumption is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of harmful gas treatment, in particular to a low-energy consumption exhaust system. Background Art

[0002] The production process is usually accompanied by the production of harmful gases. In order to prevent harmful gases from endangering the lives and health of personnel and polluting the environment, harmful gases need to be collected in time for centralized treatment. For example, during the process of manual feeding and random inspection of the reactor, harmful gases such as ammonia will escape, and there will be gas leakage at the feed port of the reactor. Therefore, it is necessary to install an exhaust device at the feed port of the reactor to extract the leaked gas in time to ensure a safe working environment.

[0003] For example, the flammable and explosive gas safety discharge system proposed by the utility model patent with application number CN202222550941.5 can be adopted, wherein the first sensor near the reactor is used to detect the combustible gas content in the environment around the reactor, and automatically alarms when the alarm value is reached. In any case, when this alarm device alarms, personnel immediately evacuate, the emergency air valve is in a closed state under normal working conditions, and the emergency air valve is opened when the first fan stops running unexpectedly. The first fan stops running unexpectedly, including power outages and failures. To avoid unexpected power outages, this system is equipped with a backup power supply to ensure that it still works in the case of power outages. When the power is off, the backup power supply is turned on, and the control unit controls the opening of the emergency air valve. When the first fan fails, the first fan outputs a signal to the control unit, and the control unit controls the opening of the emergency air valve; the second fan is an explosion-proof variable frequency fan. During the emergency operation, the frequency of the second fan is preferably set to 30-40Hz; when the second sensor detects that the gas in the pipeline is close to the explosion concentration standard, it outputs an alarm signal to the control unit, controls the second fan and the air volume regulating valve, increases the air volume, and ensures that the gas solubility in the pipeline is lower than the minimum explosion value.

[0004] However, fans require high power and run continuously, which consumes a lot of energy. Utility Model Content

[0005] In view of this, it is necessary to provide a low-energy exhaust system to solve the problem that the fan needs to run at high power and continuously, which consumes a lot of energy.

[0006] The utility model provides a low-energy exhaust system, comprising an exhaust duct and an air source, wherein the exhaust duct comprises an exhaust main pipe and an exhaust branch pipe, wherein one end of the exhaust main pipe is closed and the other end is connected to a recovery tower, one end of the exhaust branch pipe is connected to the exhaust main pipe, and the other end of the exhaust branch pipe extends to the top of a reaction kettle, and the air source comprises a first exhaust member and a second exhaust member, wherein the first exhaust member is mounted on the exhaust main pipe, and the second exhaust member is mounted on the exhaust branch pipe, and the power of the second exhaust member is adjustable according to the concentration of the gas to be extracted at the top of the harmful gas source.

[0007] Furthermore, the main exhaust pipe is horizontally placed above the exhaust branch pipe, and the exhaust branch pipe is vertically arranged.

[0008] Furthermore, a one-way valve is installed in the exhaust branch pipe.

[0009] Furthermore, an air collecting scoop is installed at the bottom of the exhaust branch pipe.

[0010] Furthermore, the second air suction member is installed at the bottom of the exhaust branch pipe.

[0011] Furthermore, there are multiple exhaust branch pipes, which are arranged above multiple harmful gas sources, and there are multiple second air exhaust members, which correspond one-to-one to the multiple exhaust branch pipes.

[0012] Furthermore, it also includes a control component, which includes a gas sensor for detecting the concentration of the gas to be extracted. The gas sensor is installed above the harmful gas source and fixedly connected to the bottom of the exhaust branch pipe.

[0013] Furthermore, the control component also includes a controller, which is electrically connected to the gas sensor, and the controller is electrically connected to the second air exhaust member. The controller controls the power of the second air exhaust member based on the concentration of the gas to be extracted detected by the gas sensor.

[0014] Furthermore, the controller is electrically connected to the gas sensor and the second air exhaust member via a connecting wire, and the connecting wire is attached to the exhaust main pipe and the exhaust branch pipe.

[0015] Furthermore, it also includes a bracket, which is fixed to the bottom of the exhaust branch pipe, and the gas sensor is fixed on the bracket.

[0016] Compared with the prior art, the first exhaust piece works and the second exhaust piece does not work. At this time, the air above the harmful gas source is sent into the recovery tower via the exhaust branch pipe and the exhaust main pipe in turn. When the gas above the harmful gas source is abnormal, such as ammonia leakage, the second exhaust piece is turned on, and the suction force in the exhaust branch pipe is instantly increased to draw the gas away in time. When the air above the harmful gas source is normal, only the first exhaust piece works, which is convenient for detecting the extracted air. At this time, the power of the first exhaust piece is relatively low. When the air above the harmful gas source is abnormal, the second exhaust piece is turned on to quickly draw away the abnormal gas, thereby avoiding the first exhaust piece from running continuously at high power, effectively reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of the low energy consumption exhaust system provided in the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the installation of an arc-shaped pipe in a low-energy exhaust system provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the installation of a gas sensor in a low-energy exhaust system provided by an embodiment of the utility model;

[0020] Figure 4 A working principle diagram of a controller in a low-energy exhaust system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0022] like Figure 1 As shown, the utility model provides a low-energy exhaust system, including an exhaust duct fitting 100 and an air source 200, the exhaust duct fitting 100 includes an exhaust main pipe 110 and an exhaust branch pipe 120, one end of the exhaust main pipe 110 is closed, and the other end is connected to the recovery tower N, one end of the exhaust branch pipe 120 is connected to the exhaust main pipe 110, and the other end of the exhaust branch pipe 120 extends to the top of the harmful gas source M, the air source 200 includes a first exhaust member 210 and a second exhaust member 220, the first exhaust member 210 is installed on the exhaust main pipe 110, and the second exhaust member 220 is installed on the exhaust branch pipe 120, and the power of the second exhaust member 220 is adjustable according to the concentration of the gas to be extracted at the top of the harmful gas source M.

[0023] During implementation, the first exhaust member 210 works and the second exhaust member 220 does not work. At this time, the air above the harmful gas source M is sent to the recovery tower N via the exhaust branch pipe 120 and the exhaust main pipe 110 in turn. When the gas above the harmful gas source M is abnormal, such as ammonia leakage, the second exhaust member 220 is turned on, and the suction force in the exhaust branch pipe 120 is instantly increased to draw the gas away in time. When the air above the harmful gas source M is normal, only the first exhaust member 210 works, which is convenient for detecting the extracted air. At this time, the power of the first exhaust member 210 is relatively low. When the air above the harmful gas source M is abnormal, the second exhaust member 220 is turned on to quickly draw away the abnormal gas, thereby avoiding the first exhaust member 210 from running at high power uninterruptedly, effectively reducing energy consumption.

[0024] It is understandable that the harmful gas source M may be a reaction kettle, a sewage pool, etc., and the harmful gas source M may overflow harmful gas upward.

[0025] The exhaust duct 100 in this embodiment draws air above the harmful gas source M into the recovery tower N, and includes an exhaust main pipe 110 and an exhaust branch pipe 120. One end of the exhaust main pipe 110 is closed and the other end is connected to the recovery tower N. One end of the exhaust branch pipe 120 is connected to the exhaust main pipe 110, and the other end of the exhaust branch pipe 120 extends to the top of the harmful gas source M.

[0026] In one embodiment, the exhaust main pipe 110 is horizontally placed above the exhaust branch pipe 120, and the exhaust branch pipe 120 is vertically arranged. The exhaust main pipe 110 can be fixed to the inner top wall of the factory building by structures such as clamps, and the harmful gas source M is placed on the ground of the factory building.

[0027] Of course, in other embodiments, the exhaust main pipe 110 and the exhaust branch pipe 120 may also be arranged at an angle, depending on the site layout requirements.

[0028] In order to prevent the gas in the exhaust main pipe 110 from flowing back into the exhaust branch pipe 120, in one embodiment, a one-way valve 121 is installed in the exhaust branch pipe 120 to limit the gas to flow only from the exhaust branch pipe 120 to the exhaust main pipe 110, wherein the one-way valve 121 is a structure that can be thought of by those skilled in the art to limit the flow direction of the medium in the pipeline, and no further elaboration and explanation will be given here.

[0029] In order to facilitate the introduction of air from the top of the harmful gas source M into the exhaust branch pipe, in one embodiment, an air collecting scoop 130 is installed at the bottom of the exhaust branch pipe 120.

[0030] The wind source 200 in this embodiment includes a first exhaust member 210 and a second exhaust member 220. The first exhaust member 210 is installed on the exhaust main pipe 110, and the second exhaust member 220 is installed on the exhaust branch pipe 120. The power of the second exhaust member 220 is adjustable according to the concentration of the gas to be extracted at the top of the harmful gas source M. The first exhaust member 210 acts on the exhaust main pipe 110 so that the air above the harmful gas source M is sequentially sent to the recovery tower N through the exhaust branch pipe 120 and the exhaust main pipe 110. The second exhaust member 220 acts on the exhaust branch pipe 120 to speed up the speed of extracting the air above the harmful gas source M.

[0031] It is understandable that the first air suction member 210 and the second air suction member 220 can be implemented by fans.

[0032] To facilitate quick response, in one embodiment, the second air suction member 220 is installed at the bottom of the exhaust branch pipe 120 .

[0033] In one embodiment, there are multiple exhaust branch pipes 120 , which are disposed above multiple harmful gas sources M. There are multiple second air exhaust members 220 , which correspond one-to-one to the multiple exhaust branch pipes 120 .

[0034] The second air extraction member 220 can be installed in the exhaust branch pipe 120, or can be installed outside the exhaust branch pipe 120. Figure 2 As shown, it also includes a vertically arranged arc tube 140 , the top and bottom ends of the arc tube 140 are both connected to the exhaust branch pipe 120 , and the second air suction member 220 is installed on the arc tube 140 .

[0035] In order to facilitate the timely control of the second exhaust component 220 to open, the present embodiment also includes a control component 300, which includes a gas sensor 310 for detecting the concentration of the gas to be extracted. The gas sensor 310 is installed above the harmful gas source M and is fixedly connected to the bottom of the exhaust branch pipe 120.

[0036] It is understandable that the gas sensor 310 is a structure that can be thought of by those skilled in the art for detecting the concentration of a specific gas, such as detecting the content of ammonia in the air, and the gas sensor 310 can be a sensor of model GMP12. Of course, when detecting other gases, the corresponding gas sensor 310 is used.

[0037] like Figure 4As shown, in one embodiment, the control component 300 further includes a controller 320, the controller 320 is electrically connected to the gas sensor 310, the controller 320 is electrically connected to the second air suction member 220, and the controller 320 controls the power of the second air suction member 220 according to the concentration of the gas to be extracted detected by the gas sensor 310. Among them, the controller 320 with the model number ACU10FD-LC can be used to implement it. When the controller 320 detects that, for example, the concentration of ammonia increases, the controller 320 controls the second air suction member 220 to work.

[0038] In one embodiment, the controller 320 is electrically connected to the gas sensor 310 and the second air suction member 220 via a connecting line 330 , and the connecting line 330 is disposed adjacent to the exhaust main pipe 110 and the exhaust branch pipe 120 .

[0039] like Figure 3 As shown, in order to facilitate fixing of the gas sensor 310 , in one embodiment, a bracket 311 is further included. The bracket 311 is fixed to the bottom of the exhaust branch pipe 120 , and the gas sensor 310 is fixed on the bracket 311 .

[0040] Compared with the prior art: the first exhaust piece 210 works, and the second exhaust piece 220 does not work. At this time, the air above the harmful gas source M is sent to the recovery tower N via the exhaust branch pipe 120 and the exhaust main pipe 110 in turn. When the gas above the harmful gas source M is abnormal, such as ammonia leakage, the second exhaust piece 220 is turned on, and the suction force in the exhaust branch pipe 120 is instantly increased to draw the gas away in time. When the air above the harmful gas source M is normal, only the first exhaust piece 210 works, which is convenient for detecting the extracted air. At this time, the power of the first exhaust piece 210 is relatively low. When the air above the harmful gas source M is abnormal, the second exhaust piece 220 is turned on to quickly draw away the abnormal gas, thereby avoiding the first exhaust piece 210 from running at high power uninterruptedly, and effectively reducing energy consumption.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A low energy consumption exhaust system, characterized in that: include: An exhaust pipe fitting, comprising an exhaust main pipe and an exhaust branch pipe, wherein one end of the exhaust main pipe is closed and the other end is connected to the recovery tower, one end of the exhaust branch pipe is connected to the exhaust main pipe, and the other end of the exhaust branch pipe extends to the top of the harmful gas source; The wind source includes a first exhaust member and a second exhaust member, wherein the first exhaust member is installed on the exhaust main pipe, and the second exhaust member is installed on the exhaust branch pipe, and the power of the second exhaust member is adjustable according to the concentration of the gas to be extracted at the top of the harmful gas source.

2. The low energy consumption exhaust system according to claim 1, characterized in that: The exhaust main pipe is horizontally arranged above the exhaust branch pipe, and the exhaust branch pipe is vertically arranged.

3. The low energy consumption exhaust system according to claim 1, characterized in that: A one-way valve is installed in the exhaust branch pipe.

4. The low energy consumption exhaust system according to claim 1, characterized in that: An air collecting hopper is installed at the bottom of the exhaust branch pipe.

5. The low energy consumption exhaust system according to claim 1, characterized in that: The second air suction member is installed at the bottom of the exhaust branch pipe.

6. The low energy consumption exhaust system according to claim 1, characterized in that: There are multiple exhaust branch pipes, which are arranged above multiple harmful gas sources. There are multiple second air exhaust members, which correspond one-to-one to the multiple exhaust branch pipes.

7. The low energy consumption exhaust system according to claim 1, characterized in that: It also includes a control component, which includes a gas sensor for detecting the concentration of the gas to be extracted. The gas sensor is installed above the harmful gas source and fixedly connected to the bottom of the exhaust branch pipe.

8. The low energy consumption exhaust system according to claim 7, characterized in that: The control component also includes a controller, which is electrically connected to the gas sensor, and the controller is electrically connected to the second air suction member. The controller controls the power of the second air suction member based on the concentration of the gas to be extracted detected by the gas sensor.

9. The low energy consumption exhaust system according to claim 8, characterized in that: The controller is electrically connected to the gas sensor and the second air exhaust member via a connecting line, and the connecting line is attached to the exhaust main pipe and the exhaust branch pipe.

10. The low energy consumption exhaust system according to claim 7, characterized in that: It also includes a bracket, which is fixed on the bottom of the exhaust branch pipe, and the gas sensor is fixed on the bracket.

Images