Tail gas waste heat recovery and silencing device for low-concentration gas generator set

Abstract

The utility model relates to the technical field of generator sets, in particular to a low-concentration gas generator set tail gas waste heat recovery and silencing device which comprises a water tank. The two openings are formed in the upper side of the water tank and are arranged at intervals; the two mounting covers are arranged on the upper side of the water tank and cover the openings; the silencer is connected with the lower sides of the mounting covers and is positioned in the water tank; the tail gas outlet pipe and the tail gas branch pipe are arranged on the mounting covers and are arranged at intervals; the controller and the buzzer alarm are arranged on one side of the water tank at intervals, the double-control tail gas inlet mechanism is communicated with gas inlet ports of the two tail gas branch pipes through flanges, and a gas inlet port of the tail gas outlet pipe is communicated with a gas outlet port of the silencer. According to the device, cleaning and replacement of the silencing devices in the water tank are simplified, the maintenance efficiency is improved, the two silencing devices are automatically and alternately used, it is ensured that a generator does not need to be shut down during maintenance, and negative influences on the exhaust efficiency and the overall performance are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of generator set, concretely is a low concentration gas generator set tail gas waste heat recovery and silencer. BACKGROUND

[0002] The exhaust system of the low concentration gas generator set is located above the unit. When the low concentration gas generator set is working, the exhaust gas temperature can reach 300 DEG C to 600 DEG C, and the noise is very large. The exhaust gas is directly discharged into the air, which can easily cause air pollution and heat energy loss in the exhaust gas. Usually, exhaust gas aftertreatment device is needed to treat the exhaust gas discharged by the low concentration gas generator set.

[0003] The current tail gas waste heat recovery and silencer device directly places the silencer in the water tank for heat exchange. However, the dust and debris carried in the exhaust gas are easy to accumulate in the silencer, gradually blocking the airflow channel, which makes the silencer need to be cleaned or replaced frequently. Since it is fixed in the water tank, it is very inconvenient to operate and the maintenance efficiency is low. In addition, when the silencer needs to be replaced and maintained, the low concentration gas generator set has to be stopped, which not only affects the exhaust efficiency of the low concentration gas generator set, but also has a negative effect on its overall performance. SUMMARY

[0004] The utility model aims at providing a low concentration gas generator set tail gas waste heat recovery and silencer device to solve the problem that the silencer of the existing device is placed in the water tank, the silencer is easy to accumulate dust and block, the maintenance is inconvenient and the efficiency is low, and the low concentration gas generator set needs to be stopped when replaced, affecting the efficiency and performance of the low concentration gas generator set.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low concentration gas generator set tail gas waste heat recovery and silencer device, comprising a water tank, further comprising two openings arranged at the upper side of the water tank, two mounting covers arranged at the upper side of the water tank and covering the openings, a silencer connected to the lower side of the mounting cover and located inside the water tank, exhaust gas outlet pipes and exhaust gas branch pipes arranged at the mounting cover and spaced apart, an airflow sensor arranged on the exhaust gas outlet pipe, a controller and a buzzer alarm arranged at one side of the water tank and spaced apart, and a double-control exhaust gas intake mechanism communicated with the two exhaust gas branch pipe intake ports through flanges. The intake port of the exhaust gas outlet pipe is communicated with the exhaust port of the silencer. The exhaust port of the exhaust gas branch pipe is communicated with the intake port of the silencer. The double-control exhaust gas intake mechanism, the two airflow sensors and the buzzer alarm are electrically connected with the controller.

[0006] Further, the silencer comprises a U-shaped silencer pipe connected to the lower side of the mounting cover, and a silencer assembly arranged in the U-shaped silencer pipe.

[0007] Further, the U-shaped silencer is sequentially communicated by a vertical air inlet section, a horizontal bending section and a vertical air outlet section, the upper ends of the vertical air inlet section and the vertical air outlet section are fixedly connected with the lower side of the mounting cover, the air outlet port of the tail gas branch pipe is communicated with the upper end of the vertical air inlet section, and the air outlet port of the tail gas outlet pipe is communicated with the upper end of the vertical air outlet section.

[0008] Further, the silencer assembly comprises a plurality of porous silencer plates arranged on the inner walls of the vertical air inlet section and the horizontal bending section, and cylindrical silencer cotton arranged on the inner wall of the vertical air outlet section, the plurality of porous silencer plates are staggered along the inner walls of the vertical air inlet section and the horizontal bending section, one end of the plurality of porous silencer plates and the inner wall of the U-shaped silencer form a through port, and the plurality of through ports form a serpentine channel for circulating tail gas.

[0009] Further, the double-control tail gas air inlet mechanism comprises a cross pipe, a tail gas inlet pipe communicated with the middle part of the outer wall of the cross pipe, and electric control valves arranged on the two ends of the outer wall of the cross pipe respectively, the two ends of the cross pipe are communicated with the air inlet ports of the two tail gas branch pipes through flanges, and the two electric control valves are electrically connected with the controller.

[0010] Further, the upper side of the mounting cover is connected with a lifting handle.

[0011] Further, the upper side of the mounting cover is connected with a lifting handle.

[0012] Compared with the prior art, the low-concentration gas generator set tail gas waste heat recovery and silencing device has the following beneficial effects:

[0013] When one of the two silencer devices is affected in performance due to dust and impurities accumulation, the device can automatically switch to realize the alternation of the two silencer devices for the waste heat recovery and silencing treatment of the tail gas, and further, the device facilitates the cleaning and replacement of the silencer device in the water tank, the operation process of the maintenance personnel is simple and direct, the maintenance efficiency is improved, and meanwhile, due to the automatic alternation of the two silencer devices, the low-concentration gas generator set does not need to be stopped during the replacement and maintenance of one of the two silencer devices, so that the negative influence on the exhaust efficiency and the overall performance of the low-concentration gas generator set is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the low-concentration gas generator set tail gas waste heat recovery and silencing device.

[0015] Figure 2 The utility model discloses a low concentration gas generator set tail gas waste heat recovery and silencing device's system control block diagram. Figure 1 The enlarged schematic view of A in the middle;

[0016] Figure 3 The utility model discloses a low concentration gas generator set tail gas waste heat recovery and silencing device's system control block diagram.

[0017] In the drawing: 1, water tank;2, water supply pipe;3, water outlet pipe;4, opening;5, silencing device;6, tail gas inlet pipe;7, cross pipe;8, electric control valve;9, tail gas branch pipe;10, tail gas outlet pipe;11, air flow sensor;12, controller;13, buzzer alarm;14, mounting cover;15, handle;16, U-shaped silencing pipe;17, porous silencing board;18, cylindrical silencing cotton;19, vertical air inlet section;20, horizontal bending section;21, vertical air outlet section. DETAILED DESCRIPTION

[0018] Please refer to Figures 1-3The utility model provides a low concentration gas generator set tail gas waste heat recovery and silencer, including water tank 1, still including two openings 4 who arranges at water tank 1 upper side and interval, two installation covers 14 who can detach through a plurality of screws and are connected on water tank 1 upper side and cover on opening 4, with installation cover 14 downside connection and located inside water tank 1 silencer 5, with interval and be arranged tail gas branch pipe 9 and tail gas out pipe 10 of installation cover 14, install the airflow sensor 11 on the pipe section of tail gas out pipe 10, install controller 12 and buzzer alarm 13 with interval and be arranged on one side of water tank 1, with two tail gas branch pipe 9 intake port through flange communication double -controlled tail gas intake mechanism, tail gas out pipe 10's intake port with the exhaust port communication of silencer 5, tail gas branch pipe 9's exhaust port with the intake port communication of silencer 5, and installation cover 14 with water tank 1's upper side is detachable through a plurality of screws and is connected, double -controlled tail gas intake mechanism, two airflow sensor 11, buzzer alarm 13 all with controller 12 electricity is connected, in the device of using this, the exhaust pipe of low concentration gas generator set is realized communication with the double -controlled tail gas intake mechanism's intake port when carrying out waste heat recovery and silencing processing operation to the tail gas that low concentration gas generator set discharged, double -controlled tail gas intake mechanism can control tail gas and enter silencer 5 through one of tail gas branch pipe 9, in silencer 5 inside, tail gas is cooled down in the coordination of water in water tank 1, simultaneously carries out silencing and waste heat recovery processing, and the tail gas after processing is discharged through tail gas out pipe 10, is transported to next tail gas processing device, in this process, airflow sensor 11 will monitor the tail gas flow that tail gas out pipe 10 discharged in real time, once the flow appears small, airflow sensor 11 will send signal to controller 12, at this moment, controller 12 will immediately start two operations: on one hand, trigger buzzer alarm 13 and issue warning sound, timely remind maintenance personnel to come over and maintain, on the other hand, control double -controlled tail gas intake mechanism and act, close the tail gas access path of current tail gas branch pipe 9, and turn to guide tail gas and enter another tail gas branch pipe 9, make tail gas flow into another silencer 5 and continue to accept processing, after receiving the alarm, maintenance personnel removes a plurality of screws, then tail gas out pipe 10 and tail gas branch pipe 9 are separated through flange and the pipeline of corresponding communication, take out installation cover 14 and entire silencer 5 from water tank 1, and then carry out replacement maintenance work, then the device facilitates the cleaning and replacement of silencer 5 in water tank 1, and the operation process is simple and convenient, which improves the maintenance efficiency, in addition, since having the function of automatic alternation of two silencers 5, when one of the silencers 5 needs to be replaced and maintained, the low concentration gas generator set does not need to be stopped, thereby avoiding the adverse effects on the exhaust efficiency and overall performance.

[0019] Silencer 5 includes U type silencer 16 connected with the lower side of installation cover 14, and silencing assembly arranged in U type silencer 16. The incoming tail gas is processed by U type silencer 16 and the silencing assembly therein.

[0020] The U-shaped muffling pipe 16 is composed of a vertical air inlet section 19, a horizontal bending section 20 and a vertical air outlet section 21 in sequence, the upper ends of the vertical air inlet section 19 and the vertical air outlet section 21 are fixedly connected with the lower side of the mounting cover 14, the air outlet port of the tail gas branch pipe 9 is communicated with the upper end of the vertical air inlet section 19, and the air outlet port of the tail gas outlet pipe 10 is communicated with the upper end of the vertical air outlet section 21; the U-shaped muffling pipe 16 is composed of the vertical air inlet section 19, the horizontal bending section 20 and the vertical air outlet section 21, which prolongs the residence time of the tail gas in the U-shaped muffling pipe 16 and improves the efficiency of the tail gas waste heat recovery and muffling.

[0021] The muffling assembly includes a plurality of porous muffling plates 17 connected to the inner walls of the vertical air inlet section 19 and the horizontal bending section 20, and a cylindrical muffling cotton 18 connected to the inner wall of the vertical air outlet section 21, the plurality of porous muffling plates 17 are staggered along the inner walls of the vertical air inlet section 19 and the horizontal bending section 20, one end of the plurality of porous muffling plates 17 and the inner wall of the U-shaped muffling pipe 16 form a through port, and the plurality of through ports form a serpentine channel for the flow of tail gas; when the tail gas enters the U-shaped muffling pipe 16, it first flows into the serpentine channel, in which the tail gas passes through the plurality of staggered porous muffling plates 17, the plurality of porous muffling plates 17 play a dual role, one is to slow down the flow rate of the tail gas, and the other is to preliminarily mute the tail gas, then the tail gas continues to move to the cylindrical muffling cotton 18, and the tail gas is further muted; thereby achieving the speed reduction and muffling of the tail gas.

[0022] The double-control tail gas inlet mechanism includes a cross pipe 7, a tail gas inlet pipe 6 communicated with the middle part of the outer wall of the cross pipe 7, and two electric control valves 8 respectively installed on the outer wall of the cross pipe 7 at both ends, the two ends of the cross pipe 7 are communicated with the air inlet ports of two tail gas branch pipes 9 through flanges, and the two electric control valves 8 are electrically connected with the controller 12; the other end of the tail gas inlet pipe 6 is communicated with the tail gas exhaust pipe of the low-concentration gas generator set, when the tail gas flow of the tail gas outlet pipe 10 of one of the muffling devices 5 becomes smaller, the controller 12 controls the corresponding one of the electric control valves 8 to be closed and the other one to be opened, so as to guide the tail gas to enter the other muffling device 5 in standby state; in this way, the process of the tail gas entering each muffling device 5 can be conveniently controlled individually.

[0023] The upper side of the mounting cover 14 is fixedly connected with a handle 15; when it is necessary to take out the mounting cover 14 and the entire muffling device 5 from the water tank 1, the mounting cover 14 is first removed from the upper side of the water tank 1, and after removal, the mounting cover 14 together with the muffling device 5 can be extracted from the water tank 1 by means of the handle 15.

[0024] The water tank 1 is communicated with the water supply pipe 2 above the controller 12 on the upper side, and communicated with the water outlet pipe 3 on the lower side; the cooling water is injected into the water tank 1 through the water supply pipe 2, and the water in the water tank 1 after heat exchange is discharged through the water outlet pipe 3, forming a circulating cooling system; when the exhaust gas enters the U-shaped muffler 16 for noise reduction treatment, the cooling water in the water tank 1 synchronously carries out heat exchange work, realizing the recycling of the low-concentration gas generator set exhaust gas waste heat.

[0025] Working principle: when the device is used to carry out waste heat recovery and noise reduction treatment on the exhaust gas discharged by the low-concentration gas generator set, the air inlet port of the double-control exhaust gas inlet mechanism is communicated with the exhaust pipe of the low-concentration gas generator set, the cooling water is injected into the water tank 1 through the water supply pipe 2, and the water in the water tank 1 after heat exchange is discharged through the water outlet pipe 3, forming a circulating cooling system; the double-control exhaust gas inlet mechanism can adjust and control the exhaust gas to enter the U-shaped muffler 16 through one of the exhaust gas branch pipes 9, and then flow into the serpentine channel; in this channel, the exhaust gas passes through a plurality of staggered perforated sound-absorbing plates 17, which play a dual role: on the one hand, they slow down the flow rate of the exhaust gas, and on the other hand, they carry out preliminary noise reduction treatment on the exhaust gas; then, the exhaust gas continues to move forward to the cylindrical sound-absorbing cotton 18, where the exhaust gas is further subjected to noise reduction treatment; the exhaust gas is simultaneously subjected to noise reduction and waste heat recovery treatment under the synergistic action of the cooling water in the water tank 1, and the treated exhaust gas is discharged through the exhaust gas outlet pipe 10 and transported to the next exhaust gas treatment device; in this process, the airflow sensor 11 monitors the exhaust gas flow rate of the exhaust gas outlet pipe 10 in real time; once the flow rate decreases, the airflow sensor 11 sends a signal to the controller 12; at this time, the controller 12 immediately starts two operations: on the one hand, it triggers the buzzer 13 to sound an alarm, reminding the maintenance personnel to come and maintain in time; on the other hand, it controls the currently opened electric control valve 8 to close and controls the other electric control valve 8 to open, so as to guide the exhaust gas into the other exhaust gas branch pipe 9 and make the exhaust gas flow into the other sound-absorbing device 5 for further treatment; after receiving the alarm, the maintenance personnel disassemble the screws, then separate the exhaust gas outlet pipe 10 and the exhaust gas branch pipe 9 through the flange and the corresponding communicating pipe, take out the installation cover 14 and the entire sound-absorbing device 5 from the water tank 1 by means of the lifting handle 15, and then carry out replacement and maintenance work; thus, the device facilitates the cleaning and replacement of the sound-absorbing device 5 in the water tank 1, the operation process is simple and convenient, and the maintenance efficiency is improved; in addition, since the device has the function of automatic alternation of the two sound-absorbing devices 5, when one of the sound-absorbing devices 5 needs to be replaced and maintained, the low-concentration gas generator set does not need to be stopped, thereby avoiding the adverse effects on the exhaust efficiency and overall performance of the low-concentration gas generator set.

[0026] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A waste heat recovery and silencing device for exhaust gas from a low-concentration gas generator set, comprising a water tank (1), characterized in that, It also includes two openings (4) spaced apart on the upper side of the water tank (1), two mounting covers (14) on the upper side of the water tank (1) covering the openings (4), a silencer (5) connected to the lower side of the mounting cover (14) and located inside the water tank (1), an exhaust gas outlet pipe (10) and an exhaust gas branch pipe (9) spaced apart on the mounting cover (14), an airflow sensor (11) on the exhaust gas outlet pipe (10), and a spaced-apart airflow sensor on one side of the water tank (1). The system includes a controller (12), a buzzer alarm (13), and a dual-control exhaust gas intake mechanism connected to the intake ports of two exhaust gas branch pipes (9) via flanges. The intake port of the exhaust gas outlet pipe (10) is connected to the outlet port of the muffler (5), and the outlet port of the exhaust gas branch pipe (9) is connected to the intake port of the muffler (5). The dual-control exhaust gas intake mechanism, two airflow sensors (11), and the buzzer alarm (13) are all electrically connected to the controller (12).

2. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 1, characterized in that, The silencing device (5) includes a U-shaped silencing pipe (16) connected to the lower side of the mounting cover (14) and a silencing component disposed in the U-shaped silencing pipe (16).

3. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 2, characterized in that, The U-shaped silencer pipe (16) is composed of a vertical air intake section (19), a horizontal curved section (20) and a vertical air outlet section (21) connected in sequence. The upper ends of the vertical air intake section (19) and the vertical air outlet section (21) are fixedly connected to the lower side of the mounting cover (14). The air outlet port of the exhaust branch pipe (9) is connected to the upper end of the vertical air intake section (19), and the air outlet port of the exhaust outlet pipe (10) is connected to the upper end of the vertical air outlet section (21).

4. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 3, characterized in that, The silencing assembly includes multiple porous silencing plates (17) disposed on the inner walls of the vertical air intake section (19) and the horizontal curved section (20), and a cylindrical silencing cotton (18) disposed on the inner wall of the vertical air outlet section (21). The multiple porous silencing plates (17) are staggered along the inner walls of the vertical air intake section (19) and the horizontal curved section (20). One end of the multiple porous silencing plates (17) forms an opening with the inner wall of the U-shaped silencing pipe (16), and the multiple openings form a serpentine channel for the flow of exhaust gas.

5. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 1, characterized in that, The dual-control exhaust gas intake mechanism includes a horizontal pipe (7), an exhaust gas intake pipe (6) connected to the middle of the outer wall of the horizontal pipe (7), and electrically controlled valves (8) respectively installed at both ends of the outer wall of the horizontal pipe (7). The two ends of the horizontal pipe (7) are respectively connected to the intake ports of two exhaust gas branch pipes (9) through flanges. Both of the electrically controlled valves (8) are electrically connected to the controller (12).

6. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 1, characterized in that, A handle (15) is attached to the upper side of the mounting cover (14).

7. The waste heat recovery and silencing device for low-concentration gas generator set exhaust gas as described in claim 1, characterized in that, The upper part of one side of the water tank (1) is connected to a water supply pipe (2) located above the controller (12), and the lower part of the other side of the water tank (1) is connected to a water outlet pipe (3).

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