Tail gas filtering device of diesel generating set

Abstract

The utility model provides a diesel generating set tail gas filtering device which comprises a smoke exhaust inner pipe, a smoke exhaust outer pipe, a partition plate, an upper filter element, a lower filter element and a cooling pipeline, a smoke inlet pipe is arranged at one end of the smoke exhaust inner pipe, a smoke exhaust pipe is arranged at the other end of the smoke exhaust inner pipe, and the partition plate is arranged in the smoke exhaust inner pipe. The inner space of the smoke exhaust inner pipe is divided into a smoke exhaust cavity located on the upper portion and a smoke inlet cavity located on the lower portion, primary filtering holes are evenly distributed in the cavity wall of the smoke inlet cavity, exhaust through holes are evenly distributed in the cavity wall of the smoke exhaust cavity, the upper filter element is arranged on the outer wall of the smoke exhaust cavity, the lower filter element is arranged on the outer wall of the smoke inlet cavity, and the smoke exhaust inner pipe is surrounded by the smoke exhaust outer pipe. The cooling pipeline is arranged between the smoke exhaust inner pipe and the smoke exhaust outer pipe; the tail gas temperature is reduced, and the situation that the service life of the smoke exhaust pipe is shortened due to long-time use of the diesel engine is avoided; the flue gas is subjected to multi-stage filtration, so that pollutants in the flue gas are reduced, and the environment-friendly effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of exhaust gas treatment of diesel generator sets, in particular to an exhaust gas filtering device for diesel generator sets. Background Art

[0002] Diesel generator sets use diesel as fuel. Therefore, smoke will be generated when the diesel generator sets are working. However, it is not easy for general diesel generator sets to filter the smoke, which can easily lead to direct emission of smoke when the diesel generator sets are in use, causing pollution to the surrounding environment. At the same time, the temperature of the smoke is relatively high. Although it will be cooled before emission, the residual temperature will still affect the service life of the exhaust pipe after long-term use. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In order to solve the above problems in the prior art, the utility model provides an exhaust gas filtering device for a diesel generator set.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0007] A diesel generator set exhaust gas filtering device comprises an exhaust inner pipe, an exhaust outer pipe, a partition plate, an upper filter element, a lower filter element and a cooling pipeline;

[0008] A smoke inlet pipe is provided at one end of the smoke exhaust inner tube, and a smoke exhaust pipe is provided at the other end of the smoke exhaust inner tube;

[0009] The partition plate is arranged in the inner smoke exhaust tube, dividing the inner space of the inner smoke exhaust tube into a smoke exhaust chamber located at the upper part and a smoke inlet chamber located at the lower part, the cavity wall of the smoke inlet chamber is uniformly distributed with primary filter holes, and the cavity wall of the smoke exhaust chamber is uniformly distributed with exhaust through holes;

[0010] The upper filter element is arranged on the outer wall of the smoke exhaust cavity;

[0011] The lower filter element is arranged on the outer wall of the smoke inlet chamber;

[0012] The outer smoke exhaust pipe surrounds the inner smoke exhaust pipe;

[0013] The cooling pipe is arranged between the inner smoke exhaust pipe and the outer smoke exhaust pipe.

[0014] Preferably, it also includes a smoke exhaust middle pipe, which is arranged in the smoke exhaust outer pipe and surrounds the smoke exhaust inner pipe. The outer wall of the smoke exhaust middle pipe is provided with diversion holes, and the cooling pipe is arranged between the smoke exhaust middle pipe and the smoke exhaust outer pipe.

[0015] Preferably, the cooling pipe is in a spiral shape, and condensate circulates in the cooling pipe.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the utility model are:

[0018] 1. This application reduces the exhaust temperature and avoids the long-term use of the diesel engine to reduce the service life of the exhaust pipe;

[0019] 2. Perform multi-stage filtration on flue gas to reduce pollutants in the flue gas and improve environmental protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an exhaust gas filtering device for a diesel generator set;

[0021] Figure 2 This is a schematic diagram of the internal structure of an exhaust gas filtration device for a diesel generator set;

[0022] Figure 3 The figure is a schematic diagram of the longitudinal structure of an exhaust gas filtering device for a diesel generator set.

[0023] [Description of Reference Numerals]

[0024] 1. Exhaust inner pipe;

[0025] 2. Separator;

[0026] 3. Exhaust hole;

[0027] 4. Cooling pipe;

[0028] 5. Exhaust pipe;

[0029] 6. Smoke exhaust pipe;

[0030] 7. Smoke exhaust pipe;

[0031] 8. Install the filter element;

[0032] 9. Lower filter element;

[0033] 10. Primary filter hole;

[0034] 11. Smoke inlet pipe;

[0035] 12. Diversion hole. DETAILED DESCRIPTION

[0036] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0037] Please refer to Figure 1 to Figure 2The utility model provides an exhaust gas filtering device for a diesel generator set, comprising an exhaust inner pipe 1, an exhaust outer pipe 5, a partition plate 2, an upper filter element 8, a lower filter element 9 and a cooling pipe 4;

[0038] A smoke inlet pipe 11 is provided at one end of the smoke exhaust inner tube 1, and a smoke exhaust pipe 6 is provided at the other end of the smoke exhaust inner tube 1;

[0039] The partition plate 2 is arranged in the exhaust inner tube 1, and divides the internal space of the exhaust inner tube 1 into an exhaust chamber located at the upper part and a smoke inlet chamber located at the lower part. The cavity wall of the smoke inlet chamber is uniformly distributed with primary filter holes 10, and the cavity wall of the smoke exhaust chamber is uniformly distributed with exhaust through holes 3;

[0040] The upper filter element 8 is arranged on the outer wall of the smoke exhaust cavity;

[0041] The lower filter element 9 is arranged on the outer wall of the smoke inlet chamber;

[0042] The smoke exhaust outer tube 5 surrounds the smoke exhaust inner tube 1;

[0043] The cooling pipe 4 is arranged between the exhaust inner pipe 1 and the exhaust outer pipe 5;

[0044] When in use, the exhaust gas generated by the diesel generator enters the smoke inlet chamber through the smoke inlet pipe 11, and is filtered through the primary filter hole 10 to remove larger particles and impurities in the exhaust gas. The exhaust gas is then finely filtered through the lower filter element 9. The finely filtered exhaust gas enters the cooling space between the exhaust outer pipe 5 and the exhaust inner pipe 1, and is cooled through the cooling pipe 4. Due to the decrease in temperature, water molecules in the air will condense into water droplets and adsorb dust particles in the exhaust gas, causing the dust particles to stick together. The exhaust gas is then filtered for the second time through the upper filter element 8. The exhaust gas that has been finely filtered again enters the smoke exhaust chamber and is discharged through the smoke exhaust pipe 6.

[0045] The present application can perform secondary cooling treatment on the diesel engine exhaust gas through the cooling pipe 4, and during the cooling, the diesel engine exhaust gas is made to condense water molecules inside the exhaust outer pipe 5 into water droplets under the effect of the temperature difference, and then finely filtered again;

[0046] The diesel engine exhaust is initially filtered through the primary filter hole 10, and finely filtered twice through the upper filter element 8 and the lower filter element 9. Between the two fine filters, the water molecules generated by cooling condense into water droplets to absorb dust particles in the exhaust gas, thereby improving the filtering effect.

[0047] In this embodiment, a smoke exhaust middle pipe 7 is further included. The smoke exhaust middle pipe 7 is arranged in the smoke exhaust outer pipe 5 and surrounds the smoke exhaust inner pipe 1. The outer wall of the smoke exhaust middle pipe 7 is provided with guide holes 12. The cooling pipe 4 is arranged between the smoke exhaust middle pipe 7 and the smoke exhaust outer pipe 5.

[0048] In this embodiment, the cooling pipe 4 is in a spiral shape, and condensate circulates in the cooling pipe 4. The cooling pipe in a spiral shape can extend the cooling time.

[0049] The working principle of the utility model is as follows:

[0050] The exhaust gas generated by the diesel generator enters the smoke inlet chamber through the smoke inlet pipe 11, and is filtered through the primary filter hole 10 to remove larger particles and impurities in the exhaust gas. The exhaust gas is then finely filtered through the lower filter element 9. The finely filtered exhaust gas enters the cooling space between the exhaust outer pipe 5 and the exhaust inner pipe 1, and is cooled through the cooling pipe 4. Due to the decrease in temperature, water molecules in the air will condense into water droplets and adsorb dust particles in the exhaust gas, causing the dust particles to stick together. The exhaust gas is then filtered for the second time through the upper filter element 8. The exhaust gas that has been finely filtered again enters the smoke exhaust chamber and is discharged through the exhaust pipe 6.

[0051] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0052] The above are only embodiments of the present invention, and are not intended to 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 related technical fields, are also included in the patent protection scope of the present invention.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A diesel generator exhaust gas filtration device, characterized in that: It includes an inner smoke exhaust pipe, an outer smoke exhaust pipe, a partition plate, an upper filter element, a lower filter element and a cooling pipe; A smoke inlet pipe is provided at one end of the smoke exhaust inner tube, and a smoke exhaust pipe is provided at the other end of the smoke exhaust inner tube; The partition plate is arranged in the inner smoke exhaust tube, dividing the inner space of the inner smoke exhaust tube into a smoke exhaust chamber located at the upper part and a smoke inlet chamber located at the lower part, the cavity wall of the smoke inlet chamber is uniformly distributed with primary filter holes, and the cavity wall of the smoke exhaust chamber is uniformly distributed with exhaust through holes; The upper filter element is arranged on the outer wall of the smoke exhaust cavity; The lower filter element is arranged on the outer wall of the smoke inlet chamber; The outer smoke exhaust pipe surrounds the inner smoke exhaust pipe; The cooling pipe is arranged between the inner smoke exhaust pipe and the outer smoke exhaust pipe.

2. A diesel generator exhaust gas filtration device according to claim 1, characterized in that: It also includes a smoke exhaust middle pipe, which is arranged in the smoke exhaust outer pipe and surrounds the smoke exhaust inner pipe. The outer wall of the smoke exhaust middle pipe is provided with guide holes, and the cooling pipe is arranged between the smoke exhaust middle pipe and the smoke exhaust outer pipe.

3. The exhaust gas filtering device for a diesel generator set according to claim 1, characterized in that: The cooling pipeline is in a spiral shape, and condensate circulates in the cooling pipeline.

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