Low-emission environment-friendly generator set

Abstract

The utility model relates to the field of diesel generators, in particular to a low-emission environment-friendly generator set which comprises a box body and a tail gas treatment mechanism. An exhaust pipe is arranged at the top of the box body; the tail gas treatment mechanism comprises a support, an oxidation filter, a mixing pipe and an SCR processor, the support is arranged at the top of the box body, the oxidation filter, the mixing pipe and the SCR processor are all arranged on the support, the exhaust pipe, the oxidation filter and the mixing pipe are sequentially connected, and the SCR processor is connected with the mixing pipe. According to the low-emission environment-friendly generator set, the whole tail gas treatment system is integrally installed on the support and installed on the top of the box body in a unified mode, no extra space is occupied, harmful substances such as PM, CO, HC and NOX in tail gas emitted by a diesel engine are effectively reduced through the tail gas treatment system, the problem that emission indexes of a diesel generator set exceed the standard is solved, and the low-emission environment-friendly generator set is suitable for large-scale popularization and application. Tail gas discharged by the diesel generating set is prevented from polluting the environment.

Description

Technical Field

[0001] The utility model relates to the field of diesel generators, in particular to a low-emission and environment-friendly generator set. Background Art

[0002] As a kind of power equipment, diesel generator sets are widely used in construction, mining, hospitals, data centers, communications and other industries. They provide power guarantee for users in the event of interruption of main and backup power supply. Their importance is self-evident. However, during the operation of diesel generator sets, the exhaust gas emitted by the diesel engine contains a large amount of PM, CO, HC, NOX and other harmful substances. The exhaust gas needs to be treated before it can be discharged. The structure of the exhaust gas treatment system can refer to the Chinese utility model patent with application number CN201922448407.1 and the name of the exhaust gas treatment system for diesel generator sets. The existing exhaust gas treatment system for diesel generator sets takes up a lot of extra space for the unit, which is inconvenient to disassemble and maintain. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a low-emission and environment-friendly generator set which saves space and is easy to install.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a low-emission and environmentally friendly generator set, including a box body and an exhaust gas treatment mechanism;

[0005] An exhaust pipe is provided on the top of the box;

[0006] The exhaust gas treatment mechanism includes a bracket, an oxidation filter, a mixing tube and an SCR processor. The bracket is arranged on the top of the box body, and the oxidation filter, the mixing tube and the SCR processor are all arranged on the bracket. The exhaust pipe, the oxidation filter and the mixing tube are connected in sequence, and the SCR processor is connected to the mixing tube.

[0007] Furthermore, a mounting block is provided on the top of the box body, and the bracket is locked to the mounting block via a fastener.

[0008] Furthermore, the exhaust gas treatment mechanism also includes an exhaust gas treatment system controller, which is disposed on a bracket and connected to an SCR processor.

[0009] Furthermore, the SCR processor includes a urea tank, a urea pump, an air compressor and a spray gun, wherein the urea tank, the urea pump, the air compressor and the spray gun are all arranged on a bracket, the urea tank, the urea pump and the spray gun are connected in sequence, the air compressor is connected to the spray gun, and the spray gun is connected to a mixing pipe.

[0010] Furthermore, the oxidation filter includes an oxidation treatment module and a particle trap, and the exhaust pipe, the oxidation treatment module and the particle trap are connected in sequence.

[0011] The beneficial effects of the utility model are: a low-emission and environmentally friendly generator set, the exhaust gas treatment mechanism is installed on the top of the unit, which is not only convenient and efficient to install, but also can save space. After the exhaust gas discharged by the unit is discharged through the top exhaust pipe, it first passes through the oxidation filter to effectively purify the harmful gases in the exhaust gas and filter and collect the particulate matter. After the gas after the primary treatment enters the mixing tube, the SCR processor is used to make the nitrogen oxides in the exhaust react with the reducing agent under the action of the catalyst to be reduced to nitrogen and water, and the purified air is discharged from the other end of the mixing tube. The low-emission and environmentally friendly generator set provided by the utility model integrates the entire exhaust gas treatment system on the bracket, and is uniformly installed on the top of the box body, without taking up additional space. The exhaust gas treatment system is used to effectively reduce PM, CO, HC, NOX and other harmful substances in the exhaust gas emitted by the diesel engine, solve the problem of excessive emission indicators of diesel generator sets, and prevent the exhaust gas emitted by diesel generator sets from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a low-emission, environmentally friendly generator set;

[0013] Figure 2 This is the main view of the low-emission and environmentally friendly generator set;

[0014] Figure 3 A top view of a low-emission, environmentally friendly generator set;

[0015] Description of labels:

[0016] 1. Box body; 11. Exhaust pipe; 12. Mounting block; 2. Exhaust gas treatment mechanism; 21. Bracket; 22. Oxidation filter; 23. Mixing tube; 24. SCR processor; 241. Urea tank; 242. Urea pump; 243. Air compressor; 25. Exhaust gas treatment system controller. DETAILED DESCRIPTION

[0017] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0018] The utility model provides a low-emission, environment-friendly generator set, which is applicable to the technical field of diesel generator sets.

[0019] Please refer to Figures 1 to 3 As shown, a low-emission and environment-friendly generator set of the utility model comprises a box body 1 and an exhaust gas treatment mechanism 2;

[0020] An exhaust pipe 11 is provided on the top of the box body 1;

[0021] The exhaust gas treatment mechanism 2 includes a bracket 21, an oxidation filter 22, a mixing tube 23 and an SCR processor 24. The bracket 21 is arranged on the top of the box body 1, and the oxidation filter 22, the mixing tube 23 and the SCR processor 24 are all arranged on the bracket 21. The exhaust pipe 11, the oxidation filter 22 and the mixing tube 23 are connected in sequence, and the SCR processor 24 is connected to the mixing tube 23.

[0022] From the above description, it can be seen that the beneficial effects of the utility model are: a low-emission and environmentally friendly generator set, the exhaust gas treatment mechanism 2 is installed on the top of the unit, which is not only convenient and efficient to install, but also can save space. After the exhaust gas discharged by the unit is discharged through the top exhaust pipe 11, it first passes through the oxidation filter 22 to effectively purify the harmful gases in the exhaust gas and filter and collect the particulate matter. After the gas after the primary treatment enters the mixing tube 23, the SCR processor 24 is used to make the nitrogen oxides in the exhaust react with the reducing agent under the action of the catalyst to be reduced to nitrogen and water, and the purified air is discharged from the other end of the mixing tube 23. The low-emission and environmentally friendly generator set provided by the utility model integrates the entire exhaust gas treatment system on the bracket 21, and is uniformly installed on the top of the box body 1, without taking up additional space, and uses the exhaust gas treatment system to effectively reduce PM, CO, HC, NOX and other harmful substances in the exhaust gas emitted by the diesel engine, solve the problem of excessive emission indicators of the diesel generator set, and prevent the exhaust gas emitted by the diesel generator set from polluting the environment.

[0023] In an optional embodiment, a mounting block 12 is provided on the top of the box body 1, and the bracket 21 is locked to the mounting block 12 via a fastener.

[0024] From the above description, it can be seen that mounting blocks 12 are provided around the top of the box body 1 for mounting and fixing the entire exhaust gas treatment system.

[0025] In an optional embodiment, the exhaust gas treatment mechanism 2 further includes an exhaust gas treatment system controller 25 , which is disposed on the bracket 21 and connected to the SCR processor 24 .

[0026] It can be seen from the above description that the exhaust gas treatment system controller 25 is used to control and adjust the injection parameters.

[0027] In an optional embodiment, the SCR processor 24 includes a urea tank 241, a urea pump 242, an air compressor 243 and a spray gun, and the urea tank 241, the urea pump 242, the air compressor 243 and the spray gun are all arranged on the bracket 21, the urea tank 241, the urea pump 242 and the spray gun are connected in sequence, the air compressor 243 is connected to the spray gun, and the spray gun is connected to the mixing pipe 23.

[0028] From the above description, it can be seen that the urea pump 242 extracts the urea solution from the urea tank 241, and sends it to the injection gun after metering and pressurization. The compressed air in the air compressor 243 is also sent to the metering injection gun after pressure regulation by the controller. The urea is sprayed out under the induced action of the compressed air, and then mixed with the compressed air, atomized by the nozzle, and then sprayed into the mixing tube 23.

[0029] In an optional embodiment, the oxidation filter 22 includes an oxidation treatment module and a particulate trap, and the exhaust pipe 11, the oxidation treatment module and the particulate trap are connected in sequence.

[0030] From the above description, it can be seen that DOC can effectively purify harmful gases such as CO, carbon monoxide and HC in the exhaust, and the particulate filter can filter and reduce PM black smoke particles in the exhaust.

[0031] Working principle: The low-emission and environmentally friendly generator set includes the generator set body and the exhaust gas treatment system.

[0032] The main body of the generator set includes: an engine, a generator, a water tank, a control output cabinet, a box 1, a chassis and a battery. The engine, generator and water tank are installed on the chassis, the battery is placed next to the engine near the starter motor, and the control output cabinet is set next to the generator near the output side of the generator excitation box. The chassis is provided with forklift slots and lifting holes to facilitate the transportation of the unit by forklift or other lifting equipment. The top of the box 1 is provided with mounting blocks 12 around it for the installation and fixation of the entire exhaust gas treatment system.

[0033] The exhaust gas treatment system includes: an oxidation filter 22, an SCR treatment device, an exhaust gas treatment system monitor, a mixing pipe 23, an air compressor 243 and a urea tank 241. The DOC+CDPF treatment device, the SCR treatment device, the exhaust gas treatment system controller 25, the air compressor 243 and the urea tank 241 are integrally mounted on the bracket 21, and the bracket 21 is connected to the mounting blocks 12 arranged around the top of the box body 1.

[0034] The oxidation filter 22 is a DOC+CDPF treatment device, which is installed at the engine exhaust. It is an effective device that can effectively purify harmful gases such as carbon monoxide and HC hydrocarbons in the exhaust through DOC, and reduce PM black smoke microparticles in the exhaust through DPF (particulate filter) filtration. DOC generally refers to a ceramic or metal carrier coated with a precious metal catalyst. HC, CO, etc. in the exhaust gas of motor vehicles undergo oxidation reactions under the action of DOC precious metals to generate carbon dioxide and water. At the same time, it can also oxidize organic particles Soot in the particles to reduce particle emissions. DOC refers to the diesel oxidation catalyst carrier. In the active and passive regeneration system, DOC also oxidizes NO into carbon dioxide. The more oxidizing carbon dioxide oxidizes the captured black smoke particles. The exothermic reaction during the oxidation process can provide the temperature required for the active and passive regeneration of CDPF (precious metal catalyst coated on DPF), so that the particles accumulated in the filter carrier undergo oxidation reactions at a lower temperature. The particles accumulate and are oxidized and eliminated at the same time, so that the carrier maintains a dynamic balance. The engine can run continuously at low back pressure for a long time, thereby reducing fuel consumption, extending the carrier maintenance cycle, and increasing the service life.

[0035] SCR is the abbreviation of Selective, Catalytic, and Reduction. The working principle of the SCR treatment device is to spray the reducing agent (urea) into the exhaust pipe 11, so that the nitrogen oxides in the exhaust gas react with the reducing agent under the action of the catalyst and are reduced to nitrogen and water. The reducing agent currently used in the SCR system is urea. The urea aqueous solution decomposes into ammonia and carbon dioxide at high temperature. Under the control of the exhaust gas treatment system controller 25, the urea pump 242 extracts the urea solution from the urea tank 241, and sends it to the double-flow atomizing spray gun after metering and pressurization. The compressed air in the air compressor 243 is also sent to the metering spray gun after the pressure is adjusted by the controller. After the injection valve is opened, the urea is sprayed out under the induced action of the compressed air, mixed with the compressed air, and then sprayed into the mixing pipe 23 after being atomized by the nozzle. The controller accurately calculates the required urea solution injection amount according to the exhaust gas flow, temperature and gas concentration, and sends a corresponding pulse width modulation signal to the metering pump. The metering pump meters the urea solution according to the signal, thereby ensuring that the urea solution is accurately injected into the mixing pipe 23.

[0036] Please refer to Figures 1 to 3 As shown, the first embodiment of the utility model is: a low-emission environmentally friendly generator set, including a box body 1 and an exhaust gas treatment mechanism 2;

[0037] An exhaust pipe 11 is provided on the top of the box body 1;

[0038] The exhaust gas treatment mechanism 2 includes a bracket 21, an oxidation filter 22, a mixing tube 23 and an SCR processor 24. The bracket 21 is arranged on the top of the box body 1, and the oxidation filter 22, the mixing tube 23 and the SCR processor 24 are all arranged on the bracket 21. The exhaust pipe 11, the oxidation filter 22 and the mixing tube 23 are connected in sequence, and the SCR processor 24 is connected to the mixing tube 23.

[0039] The top of the housing 1 is provided with a mounting block 12, and the bracket 21 is locked with the mounting block 12 by fasteners. The exhaust gas treatment mechanism 2 also includes an exhaust gas treatment system controller 25, which is arranged on the bracket 21 and connected to the SCR processor 24. The SCR processor 24 includes a urea tank 241, a urea pump 242, an air compressor 243 and a spray gun, and the urea tank 241, the urea pump 242, the air compressor 243 and the spray gun are all arranged on the bracket 21, and the urea tank 241, the urea pump 242 and the spray gun are connected in sequence, and the air compressor 243 is connected to the spray gun, and the spray gun is connected to the mixing pipe 23. The oxidation filter 22 includes an oxidation treatment module and a particulate trap, and the exhaust pipe 11, the oxidation treatment module and the particulate trap are connected in sequence.

[0040] In summary, the low-emission and environmentally friendly generator set of the utility model installs the exhaust gas treatment mechanism on the top of the unit, which is not only convenient and efficient to install, but also can save space. After the exhaust gas emitted by the unit is discharged through the top exhaust pipe, it first passes through the oxidation filter to effectively purify the harmful gases in the exhaust gas and filter and collect the particulate matter. After the gas after the primary treatment enters the mixing tube, the SCR processor is used to make the nitrogen oxides in the exhaust react with the reducing agent under the action of the catalyst to be reduced to nitrogen and water, and the purified air is discharged from the other end of the mixing tube. The low-emission and environmentally friendly generator set provided by the utility model integrates the entire exhaust gas treatment system on the bracket and uniformly installs it on the top of the box without taking up additional space. The exhaust gas treatment system is used to effectively reduce PM, CO, HC, NOX and other harmful substances in the exhaust gas emitted by the diesel engine, solve the problem of excessive emission indicators of diesel generator sets, and prevent the exhaust gas emitted by diesel generator sets from polluting the environment.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A low-emission environmentally friendly generator set, characterized in that: It includes a box body and an exhaust gas treatment mechanism; an exhaust pipe is arranged on the top of the box body; the exhaust gas treatment mechanism includes a bracket, an oxidation filter, a mixing tube and an SCR processor, the bracket is arranged on the top of the box body, the oxidation filter, the mixing tube and the SCR processor are all arranged on the bracket, the exhaust pipe, the oxidation filter and the mixing tube are connected in sequence, and the SCR processor is connected to the mixing tube.

2. The low-emission and environmentally friendly generator set according to claim 1, characterized in that: A mounting block is arranged on the top of the box body, and the bracket is locked with the mounting block through a fastener.

3. The low-emission and environmentally friendly generator set according to claim 1, characterized in that: The exhaust gas treatment mechanism further includes an exhaust gas treatment system controller, which is disposed on a bracket and connected to an SCR processor.

4. The low-emission and environmentally friendly generator set according to claim 1, characterized in that: The SCR processor comprises a urea tank, a urea pump, an air compressor and a spray gun, wherein the urea tank, the urea pump, the air compressor and the spray gun are all arranged on a bracket, the urea tank, the urea pump and the spray gun are connected in sequence, the air compressor is connected to the spray gun, and the spray gun is connected to a mixing pipe.

5. The low-emission and environmentally friendly generator set according to claim 1, characterized in that: The oxidation filter comprises an oxidation treatment module and a particle trap, and the exhaust pipe, the oxidation treatment module and the particle trap are connected in sequence.

Images