Automatic control device for shutdown flue gas discharge valves of multiple biomass boilers

Abstract

The utility model discloses an automatic control device for flue gas discharge valves during shutdown of multiple biomass boilers, and relates to the technical field of flue gas discharge of boilers. The boiler pipeline assembly is communicated with the exhaust main pipeline; a motor; the motor rotating shaft is mounted at the output end of the motor; the number of the plugging devices is four, and the plugging devices are rotatably installed in the boiler pipeline assembly and are driven by the motor to rotate; according to the utility model, the on-line closing of the boiler flue gas pipeline can be realized, the backflow of waste gas is prevented, and smoke gas discharged by a plurality of biomass boilers needs to be collected together after several stages of dust removal, enters the wet type electric dust removal device and is finally discharged into the atmosphere from one chimney; the device can switch an input power supply through the automatic switching power supply module, the power supply is linked with a boiler power supply, and the motor controller is controlled by using the power-on characteristic of the time relay.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler smoke emission, in particular to an automatic control device for smoke emission valves of multiple biomass boilers that are shut down. Background Art

[0002] As an environmentally friendly, low-carbon energy source, biomass boilers are widely used in both industrial and residential applications. By burning biomass fuels, such as wood chips and straw, they generate heat for heating, steam generation, and power generation. Their environmentally friendly, abundant, and renewable nature have earned them widespread recognition.

[0003] However, during the joint operation of multiple biomass boilers, when it is necessary to shut down a single or multiple boilers, the smoke gases emitted by multiple biomass boilers need to be collected together after several stages of dust removal, enter the wet electrostatic precipitator, and finally be discharged into the atmosphere from a chimney.

[0004] If one or more boilers need to be shut down due to load reduction or maintenance, the exhaust gas emitted by other boilers may flow back into the flue gas duct of the boiler, or even flow back into the shut-down boiler through the flue gas duct, affecting the maintenance work and causing pollution. When traditional biomass boilers are shut down, the discharge valve needs to be closed manually, which is time-consuming and labor-intensive. If it is not closed, the smoke gas will flow back, causing environmental pollution. If it is not closed in time, the dust and harmful gases in the discharged smoke gas will be discharged, seriously polluting the surrounding environment and affecting the ecological balance and people's health.

[0005] Therefore, it is necessary to invent a multiple biomass boiler shutdown flue gas emission valve automatic control device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic control device for flue gas emission valves when multiple biomass boilers are shut down, so as to solve the problem raised in the above background technology that when one or more boilers need to be shut down due to load reduction or maintenance, the exhaust gas emitted by other boilers may flow back into the flue gas duct of the boiler, or even flow back into the shut-down boiler through the flue gas duct, affecting the maintenance work and causing pollution.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an automatic control device for flue gas emission valves of multiple biomass boilers when they are shut down, comprising:

[0008] exhaust main pipe;

[0009] a boiler pipe assembly, wherein the boiler pipe assembly is connected to the exhaust main pipe;

[0010] Motor;

[0011] A motor shaft, the motor shaft being mounted at an output end of the motor;

[0012] The blocking device is provided with four blocking devices, which are rotatably installed inside the boiler pipe assembly and rotated by the drive of the motor.

[0013] Optionally, the boiler pipe assembly consists of a first boiler pipe, a second boiler pipe, a third boiler pipe, and a fourth boiler pipe.

[0014] Optionally, the tops of the first boiler pipe, the second boiler pipe, the third boiler pipe, and the fourth boiler pipe are set as exhaust ports, and the bottoms of the first boiler pipe, the second boiler pipe, the third boiler pipe, and the fourth boiler pipe are set as air inlets.

[0015] Optionally, the blocking device includes:

[0016] an exhaust valve rotatably mounted inside the boiler piping assembly;

[0017] A connecting rod is fixedly connected to the exhaust valve by screws, and the connecting rod extends to the outside of the boiler pipe assembly and is connected to the motor shaft.

[0018] The technical effects and advantages of this utility model are:

[0019] 1. The utility model can realize the online closure of the boiler flue gas pipeline to prevent the exhaust gas from flowing back. The flue gas emitted by multiple biomass boilers needs to be collected together after several stages of dust removal, enter the wet electrostatic precipitator, and finally be discharged into the atmosphere from a chimney.

[0020] 2. The device of the utility model can switch the input power supply through the automatic switching power supply module. The power supply is linked with the boiler power supply, and the motor controller is controlled by the power-on characteristic of the time relay to realize the online closing of the exhaust valve of the boiler flue gas pipeline to prevent the backflow of smoke and dust gas and pollution.

[0021] 3. The utility model can realize automatic control, reduce manual operation, automatically switch the power input of the power supply module, and the time relay detects the power supply status in real time. When the power is switched, the motor controller is automatically controlled to realize the automatic closing of the exhaust valve of the boiler flue gas pipeline. When a single boiler is powered off, the exhaust valve of the boiler flue gas pipeline can also be automatically closed, thereby reducing manpower input, saving electricity, and maintaining the efficient operation of the boiler.

[0022] 4. The device of the utility model consumes less power and has low cost. After the device is in operation, the circuit is only energized to the power module and the time relay module. These two modules consume very little power during operation, which can effectively reduce the power consumption of the device and reduce the operating expenses of the control device, saving costs.

[0023] 5. The structure of the device of the present invention is not complicated, and most of the components are universal control components, which are easy to implement. The control system mainly adopts automatic switching power supply module, time relay, motor controller, motor, etc. The material sources are wide, and the processing, layout and installation are convenient and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic structural diagram of the plugging device of the utility model;

[0026] Figure 3 This is a schematic diagram of the utility model process.

[0027] In the figure: 100, exhaust main pipe;

[0028] 200, boiler pipe assembly; 210, first boiler pipe; 220, second boiler pipe; 230, third boiler pipe; 240, fourth boiler pipe; 250, exhaust port; 260, air inlet;

[0029] 300, motor;

[0030] 400, motor shaft;

[0031] 500, blocking device; 510, exhaust valve; 520, connecting rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The utility model provides Figure 1-3 The device is an automatic control device for flue gas emission valves when multiple biomass boilers are shut down, comprising:

[0034] exhaust main pipe 100;

[0035] The boiler pipe assembly 200 is connected to the exhaust main pipe 100;

[0036] Motor 300;

[0037] The motor shaft 400 is mounted on the output end of the motor 300;

[0038] The blocking device 500 is provided in four pieces and is rotatably installed inside the boiler pipe assembly 200 and rotates under the drive of the motor 300 .

[0039] Among them, the four motors 300 are controlled to be turned on or off by four motor controllers respectively. At the same time, the motor controllers are controlled by time relays to control the start time. The four time relays control a main power supply for power supply. At the same time, the four time relays are respectively provided with a boiler power supply for temporary power supply. The boiler power supply and the main power supply are controlled by an automatic switching power supply module to control which power supply is supplied;

[0040] During smoke exhaust, the motor controller controls the corresponding motor 300 to start, causing the motor 300 to rotate via the motor shaft 400, and causing the blocking device 500 to open the corresponding portion of the boiler pipe assembly 200, so that the smoke enters the exhaust main pipe 100 through the boiler pipe assembly 200 and is discharged through the exhaust main pipe 100;

[0041] When smoke exhaust is stopped, the motor controller controls the corresponding motor 300 to start again, so that the motor 300 drives the blocking device 500 to rotate through the motor shaft 400, and the blocking device 500 closes the corresponding part of the boiler pipe assembly 200, stopping the smoke from being discharged through the boiler pipe assembly 200;

[0042] Among them, the boiler pipe assembly 200 can be closed online to prevent the exhaust gas from flowing back. The smoke gases emitted by multiple biomass boilers need to be collected together after several stages of dust removal, enter the wet electrostatic precipitator, and finally be discharged into the atmosphere from a chimney.

[0043] In some embodiments of the present invention, the boiler pipe assembly 200 is composed of a first boiler pipe 210 , a second boiler pipe 220 , a third boiler pipe 230 , and a fourth boiler pipe 240 .

[0044] Among them, the first boiler pipeline 210, the second boiler pipeline 220, the third boiler pipeline 230, and the fourth boiler pipeline 240 are respectively connected to different boilers, so that the flue gases exhausted by the four boilers will not affect each other. Moreover, when one of the boilers is being repaired, the flue gases exhausted by the other boilers will not be diverted into the interior of the boiler being repaired.

[0045] In some embodiments of the present invention, the tops of the first boiler pipe 210 , the second boiler pipe 220 , the third boiler pipe 230 , and the fourth boiler pipe 240 are set as exhaust ports 250 , and the bottoms of the first boiler pipe 210 , the second boiler pipe 220 , the third boiler pipe 230 , and the fourth boiler pipe 240 are set as air inlets 260 .

[0046] When the flue gas flows, the flue gas enters through the air inlet 260 of the boiler pipe and is discharged through the exhaust port 250 into the interior of the exhaust main pipe 100;

[0047] The air inlet 260 and the air outlet 250 are provided to ensure the normal flow of the flue gas, so that the flue gas passes through the corresponding boiler pipes.

[0048] In some embodiments of the present invention, the blocking device 500 includes:

[0049] An exhaust valve 510 , the exhaust valve 510 is rotatably mounted inside the boiler pipe assembly 200 ;

[0050] The connecting rod 520 is fixedly connected to the exhaust valve 510 by screws, and the connecting rod 520 extends to the outside of the boiler pipe assembly 200 and is connected to the motor shaft 400.

[0051] The connecting rod 520 is sleeved on the outside of the motor shaft 400, and is driven by the motor shaft 400 to rotate the exhaust valve 510, so that the exhaust valve 510 opens or closes the boiler pipe assembly 200 by rotating;

[0052] Among them, by setting the connection rod 520 and connecting it with the motor shaft 400, the motor shaft 400 drives the exhaust valve 510 to rotate, thereby adjusting the use state of the exhaust valve 510;

[0053] The connecting rod 520 and the exhaust valve 510 are connected by screws, so that the connecting rod 520 and the exhaust valve 510 can be normally disassembled for cleaning and replacement.

[0054] In some embodiments of the present invention, the four motors 300 are respectively controlled by four motor controllers, which control the start and stop of the motors 300 , and are electrically connected to a time relay.

[0055] The device can switch the input power supply through the automatic switching power supply module, which is linked with the boiler power supply. It uses the power-on characteristics of the time relay to control the motor controller to achieve online closing of the exhaust valve of the boiler flue gas pipeline to prevent the backflow of smoke and dust gas and pollution.

[0056] The device can realize automatic control and reduce manual operation. The automatic switching power module automatically switches the power input. The time relay detects the power status in real time. When the power is switched, the motor controller is automatically controlled to realize the automatic closing of the exhaust valve of the boiler flue gas pipe. When a single boiler loses power, the exhaust valve of the boiler flue gas pipe can also be automatically closed, thereby reducing manpower input, saving energy and maintaining the efficient operation of the boiler.

[0057] Among them, the device consumes less power and has low cost. After the device is in operation, the circuit is only energized to the power module and the time relay module. These two modules consume very little power when in operation, which can effectively reduce the power consumption of the device and reduce the operating expenses of the control device, saving costs.

[0058] Among them, the structure of the device is not complicated, and most of it is universal control components, which are easy to implement. The control system mainly adopts automatic switching power supply module, time relay, motor controller, motor, etc. The material source is wide, and the processing, layout and installation are convenient and easy to implement.

[0059] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic control device for flue gas emission valves when multiple biomass boilers are shut down, characterized in that: include: exhaust main pipe (100); A boiler pipe assembly (200), the boiler pipe assembly (200) being connected to the exhaust main pipe (100); motor(300); A motor shaft (400), the motor shaft (400) being mounted on an output end of the motor (300); The blocking devices (500) are provided in four pieces and are rotatably mounted inside the boiler pipe assembly (200) and rotated by the drive of the motor (300).

2. The automatic control device for flue gas emission valves when multiple biomass boilers are shut down according to claim 1 is characterized in that: The boiler pipe assembly (200) consists of a first boiler pipe (210), a second boiler pipe (220), a third boiler pipe (230), and a fourth boiler pipe (240).

3. The automatic control device for flue gas emission valves when multiple biomass boilers are shut down according to claim 2 is characterized in that: The tops of the first boiler pipe (210), the second boiler pipe (220), the third boiler pipe (230), and the fourth boiler pipe (240) are configured as exhaust ports (250), and the bottoms of the first boiler pipe (210), the second boiler pipe (220), the third boiler pipe (230), and the fourth boiler pipe (240) are configured as air inlets (260).

4. The automatic control device for flue gas emission valves when multiple biomass boilers are shut down according to claim 1 is characterized in that: The blocking device (500) comprises: an exhaust valve (510), the exhaust valve (510) being rotatably mounted inside the boiler pipe assembly (200); A connecting rod (520) is fixedly connected to the exhaust valve (510) via a screw, and the connecting rod (520) extends to the outside of the boiler pipe assembly (200) and is connected to the motor shaft (400).

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