Marine diesel engine test run black smoke treatment device

Abstract

The invention provides a marine diesel engine test run black smoke treatment device which is characterized by comprising a device shell, the device shell comprises an anechoic chamber located on the lower portion and a filter chamber located on the upper portion, the filter chamber is communicated with the anechoic chamber, and an air inlet is formed in one side face of the anechoic chamber; a filter chamber is arranged in the device shell, a plurality of metal filter elements are distributed in the filter chamber, the axial direction of the metal filter elements is the vertical direction, black smoke dust is intercepted by the outer surfaces of the metal filter elements, filtered gas is contained in the metal filter elements, an air outlet is formed in the top of the filter chamber, and a pulse injection system is arranged above the device shell and connected with the filter chamber. According to the marine diesel engine test run black smoke treatment device, the problems that an existing device is complex in structure, filtering materials are not easy to clean, noise is large, and operation and maintenance are difficult are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a marine diesel engine test black smoke treatment device for ship industry enterprises. BACKGROUND

[0002] The marine diesel engine is tested as a whole before leaving the factory, and the black smoke generated during the test process not only pollutes the surrounding environment, but also harms the health of the test personnel.

[0003] For the black smoke of the marine diesel engine test, the commonly used treatment methods are bag dust collector, electrostatic precipitator and particulate trap, etc. Among them, the filter bag of the bag dust collector has low temperature resistance and cannot be used directly, and a flue gas cooling device needs to be installed at the front end, and the overall system is complex; the electrostatic precipitator uses high-voltage direct current to electrostatically capture the soot particles with electrical properties, and the filtering efficiency is low, the equipment volume is large, and the cost is high; the filtering efficiency of the particulate trap is high, but the filtering material of the commonly used trap is mainly ceramic material and metal mesh, etc., and if the particles on the filtering material are not cleaned in time, it will cause hole blockage, increase back pressure and reduce the performance of the diesel engine. In addition, the noise pollution of the exhaust gas of the marine diesel engine test is also very serious.

[0004] Therefore, a marine diesel engine test black smoke treatment device with high temperature resistance, high filtering efficiency, noise reduction and convenient operation and maintenance is needed to solve the technical problems existing in the prior art. SUMMARY

[0005] In order to solve the above problems, the purpose of the present application is to provide a marine diesel engine test black smoke treatment device, which overcomes the problems of complex structure, difficult cleaning of filtering material, high noise and difficult operation and maintenance of the existing device.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] The present application provides a marine diesel engine test black smoke treatment device, characterized in that: the device shell comprises a sound reduction chamber located at the lower part and a filter chamber located at the upper part, the filter chamber is communicated with the sound reduction chamber, and the sound reduction chamber is provided with an air inlet on one side; a plurality of metal filter cartridges are arranged in the filter chamber, the axial direction of the metal filter cartridge is vertical, the outer surface of the metal filter cartridge traps black smoke dust, and the inside is filtered gas; the top of the filter chamber is provided with an air outlet, and the upper part of the device shell is provided with a pulse blowing system connected with the filter chamber.

[0008] Further, in the marine diesel engine test black smoke treatment device provided by the present application, the metal filter cartridge can be made of 316L stainless steel material with a temperature resistance of 500 DEG C, and the filtering precision of the metal filter cartridge can be 0.1-10 microns.

[0009] Further, the ship diesel engine test run black smoke treatment device provided by the present application can further have the following features: the lower end of the filter chamber is provided with a perforated plate.

[0010] Further, the ship diesel engine test run black smoke treatment device provided by the present application can further have the following features: the pulse spraying system comprises a pulse controller, electromagnetic pulse valves, a plurality of spraying pipes and a gas pocket, the plurality of spraying pipes are provided with a plurality of spraying pipes, the pipe openings of the plurality of spraying pipes correspond to the positions of the upper ends of the plurality of metal filter cartridges, the electromagnetic pulse valves are provided in plurality and are respectively installed on the plurality of spraying pipes, the electromagnetic pulse valves receive the electric signals of the pulse controller to control the opening and closing of the electromagnetic pulse valves, and the spraying pipes are connected with the gas pocket.

[0011] Further, the ship diesel engine test run black smoke treatment device provided by the present application can further have the following features: the outer side of the device shell is provided with a ladder guard.

[0012] Further, the ship diesel engine test run black smoke treatment device provided by the present application can further have the following features: the other side of the sound attenuation chamber is provided with an access hole, and the access hole is sealed by a flange.

[0013] Further, the ship diesel engine test run black smoke treatment device provided by the present application can further have the following features: the side of the sound attenuation chamber is provided with a diagonal reinforcing rib.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The ship diesel engine test run black smoke treatment device provided by the present application can reduce the noise at the air inlet through the sound attenuation chamber, the metal filter cartridges of the filter chamber are high-temperature resistant and have high filtration efficiency, and the black smoke gas can be purified after being treated by the device. The ship diesel engine test run black smoke treatment device provided by the present application has the advantages of simple structure, high-temperature resistance, pulse back-flushing cleaning filter cartridges, high filtration efficiency, small overall resistance, reduced test run exhaust noise pollution, etc., and does not increase the back pressure during the test run of the ship diesel engine. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the ship diesel engine test run black smoke treatment device in the embodiment of the present application;

[0017] Figure 2 is a structural side view of the ship diesel engine test run black smoke treatment device in the embodiment of the present application.

[0018] Reference signs: filter chamber 1, perforated plate 11, metal filter cartridge 2, pulse spraying system 3, spraying pipe 31, electromagnetic pulse valve 32, gas pocket 33, sound attenuation chamber 4, diagonal reinforcing rib 41, air inlet 5, air outlet 6, access hole 7, ladder guard 8. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the technical solutions of the present application are specifically described below in conjunction with the drawings.

[0020] Referring to Figure 1 and Figure 2 , the embodiment provides a black smoke treatment device for marine diesel engine test run, which comprises a device shell, the device shell comprises a soundproof chamber 4 located at the lower part and a filter chamber 1 located at the upper part, and the filter chamber 1 is communicated with the soundproof chamber 4.

[0021] The soundproof chamber 4 is used for effectively reducing the noise of the air inlet during the test run of the marine diesel engine. The soundproof chamber 4 mainly uses a resonance cavity to absorb or offset the noise of a specific frequency, so as to reduce the noise. One side of the soundproof chamber 4 is provided with an air inlet 5 for the black smoke gas of the marine diesel engine test run to enter. The other side of the soundproof chamber 4 is provided with an access hole, so that the maintenance and repair are more convenient, and the access hole is sealed by a flange. The side of the soundproof chamber 4 is provided with a diagonal reinforcing rib 41 for improving the stability of the overall structure of the device shell.

[0022] The filter chamber 1 is used for purifying the black smoke gas during the test run of the marine diesel engine. A plurality of metal filter cartridges 2 are arranged in the filter chamber 1, the axial direction of the metal filter cartridges 2 is vertical, the outer surface of the metal filter cartridges 2 traps black smoke dust, and the inside is filtered gas. The top of the filter chamber 1 is provided with an air outlet 6 for discharging the purified gas. The metal filter cartridges 2 are made of 316L stainless steel material with a temperature resistance of 500℃, the filtering precision of the metal filter cartridges 2 is 0.1-10μm, and the metal filter cartridges 2 have the characteristics of simple installation and high filtering efficiency.

[0023] The lower end of the filter chamber 1 is provided with a perforated plate 11. The perforated plate 11 is a flat plate structure, and a plurality of holes with a diameter of 20mm are uniformly arranged on the perforated plate 11, the perforation rate is 50%, and the perforated plate 11 makes part of the airflow flow around through the holes, reduces the difference of airflow velocity on the cross section, makes the airflow velocity more uniform, and reduces the noise of the air inlet.

[0024] The upper part of the device shell is provided with a pulse blowing system 3, which is connected with the filter chamber 1. The pulse blowing system 3 comprises a pulse controller, an electromagnetic pulse valve 32, a blowing pipe group and a gas pocket 33. The blowing pipe group is provided with a plurality of blowing pipes 31, the nozzles of the plurality of blowing pipes 31 correspond to the upper end positions of the plurality of metal filter cartridges 2, so that a high-speed airflow is formed in the filter cartridge to form an instantaneous reverse pressure wave in the filter cartridge, carry the surrounding air, and impact the inner wall of the filter cartridge, so that the black smoke dust accumulated on the outer surface of the filter cartridge is stripped and falls off from the surface of the filter cartridge, thereby realizing the dust cleaning effect of the metal filter cartridge. The blowing pipe 31 is connected with the gas pocket 33, and the gas pocket 33 provides a local and stable high-pressure gas source reserve for the connected blowing pipe 31, so as to ensure that sufficient gas amount and pressure can be released in a very short blowing time. The electromagnetic pulse valve 32 is connected with the gas pocket 33, and the electromagnetic pulse valve 32 receives the electric signal of the pulse controller to control the opening and closing of the electromagnetic pulse valve 32. The worker can set the corresponding pressure difference value or set the device to stop and automatically pulse blow and clean dust according to the dust cleaning requirement of the filter cartridge. The device of the embodiment can blow back the filter cartridge through the pulse blowing system 3 to clean the dust on the filter material in time, avoid plugging the hole, and ensure the normal test running of the marine diesel engine.

[0025] The outer side of the device shell is also provided with a ladder guard 8, so that the device maintenance work is more convenient and safe.

[0026] The above embodiments are only preferred embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application is included in the protection scope of the present application.

Claims

1. A device for treating black smoke during a marine diesel engine test run, characterized by: The device comprises a housing, wherein the housing comprises a muffler chamber located below and a filter chamber located above, wherein the filter chamber is communicated with the muffler chamber. An air inlet is provided on one side of the silencing chamber; The filter chamber is provided with a plurality of metal filter elements, the axial direction of the metal filter element is the vertical direction, the outer surface of the metal filter element intercepts black smoke and dust, and the interior is filtered gas, and the top of the filter chamber is provided with an air outlet. A pulse jet system is provided above the device housing and is connected to the filter chamber.

2. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, The metal filter element is made of 316L stainless steel with a temperature resistance of 500°C, and the filtration accuracy of the metal filter element is 0.1μm to 10μm.

3. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, A perforated plate is provided at the lower end of the filter chamber.

4. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, The pulse jet system includes: a pulse controller, an electromagnetic pulse valve, a jet pipe group and an air bag. The blowing pipe group is provided with a plurality of blowing pipes, and the pipe openings of the plurality of blowing pipes correspond to the upper end positions of the plurality of metal filter elements. There are multiple electromagnetic pulse valves, which are respectively installed on multiple blowing pipes, and the electromagnetic pulse valves receive electrical signals from the pulse controller to control the opening and closing of the electromagnetic pulse valves. The blowing pipe is connected to the air bag.

5. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, A ladder guardrail is provided on the outer side of the device shell.

6. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, An inspection hole is provided on the other side of the muffler chamber, and the inspection hole is sealed by a flange.

7. The device for treating black smoke during a marine diesel engine test run as claimed in claim 1, characterized in that: in, The side surfaces of the muffler chamber are provided with oblique reinforcing ribs.

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