Air filter for silent box-type gas generator set

Abstract

The utility model relates to the technical field of filters, and specifically discloses an air filter for a silent box-type gas generator set, comprising a filter body, a protective cover shell fixedly arranged at the top of the filter body, a flame-retardant sound-absorbing cotton layer one arranged on the inner side of the protective cover shell; the filter body comprises a filter inner wall plate, a flame-retardant sound-absorbing cotton layer two arranged on the outer side of the filter inner wall plate; a filter connecting plate is welded to the lower inner side of the filter inner wall plate, a filter lower sealing plate is welded to the lower end of the filter connecting plate, a sound-absorbing porous plate is welded to the upper end surface of the filter lower sealing plate, a filter connecting pipe is welded vertically downward on the lower end surface of the filter lower sealing plate, and a connecting flange is arranged at the other end of the filter connecting pipe; a filter element is fixedly arranged on the upper part of the inner cavity of the filter body. The air filter is installed as a whole outside the silent box to avoid danger caused by leakage of toxic gas in the box; solve the risk of rainwater entering the silent box; reduce the two-way dynamic noise generated by air flow and rotation of the turbocharger, and reduce the external noise; reduce the height of the equipment for easy maintenance and replacement of the filter element.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and specifically discloses an air filter for a soundproof box-type gas generator set. Background Art

[0002] Silent box-type gas generator sets are widely used in gas power generation fields such as industrial refining gas, coal mine gas, biogas, natural gas, etc. They have the advantages of high integration, flexible functional combination, short installation period, and convenient relocation.

[0003] However, there are also safety issues that cannot be ignored in the use of silent box-type gas generator sets. For example, during operation and shutdown and maintenance, we must always pay attention to the accumulation of industrial refining gas with toxic gas CO as the main component inside the closed box, causing poisoning and fire and explosion; for example, the equipment makes a lot of noise during operation, causing hearing loss to the staff. Therefore, in the national environment of safe production, fundamentally solving the problem of excessive noise and gas leakage safety hazards has become a necessary improvement project for silent box-type gas generator sets.

[0004] The existing technology still has the following problems:

[0005] 1. At present, silent box-type gas generator sets do not have a special air filter design, and still use the traditional factory-style structure, and are mostly installed inside the silent box. There will inevitably be hidden dangers of flammable and toxic gas leakage in the box, which will bring danger to equipment operation and personnel.

[0006] 2. Due to the influence of heat radiation during the operation of the unit, the ambient temperature inside the silent box is often higher than that outside the box, causing the air temperature entering the engine through the air filter to be high, affecting the unit's power output and other performance indicators.

[0007] 3. The traditional air filter installed outside the soundproof box cannot achieve the noise reduction index. Utility Model Content

[0008] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide an air filter for a silent box-type gas generator set, which can be installed outside the silent box to prevent the leakage of flammable and toxic gases in the box, effectively reduce noise emissions, realize low-noise operation of the silent box-type gas generator set, and improve the safety of equipment and personnel.

[0009] The technical solution adopted by the utility model to solve its technical problems is:

[0010] The air filter for the silent box-type gas generator set comprises a filter body, a protective cover shell is fixedly arranged on the top of the filter body, and a flame-retardant sound-absorbing cotton layer is arranged inside the protective cover shell;

[0011] The filter body includes a filter inner wall plate, and two flame-retardant sound-absorbing cotton layers are arranged on the outer side of the filter inner wall plate; a filter connecting plate is welded to the lower inner side of the filter inner wall plate, a filter lower sealing plate is welded to the lower end of the filter connecting plate, a sound-absorbing porous plate is welded to the upper end surface of the filter lower sealing plate, a filter connecting pipe is welded vertically downward to the lower end surface of the filter lower sealing plate, and a connecting flange is arranged at one end of the filter connecting pipe away from the filter lower sealing plate; a filter element is fixedly arranged on the upper part of the inner cavity of the filter body.

[0012] The air filter is installed outside the soundproof box. Fresh air flows from bottom to top through the gaps around the protective cover and the inner wall of the filter. After being filtered by the filter element and the sound-absorbing porous plate, it enters the engine through the connection flange on the filter connecting pipe and the connection between the engine air inlet. The air filter reduces the friction noise generated by the air intake on the one hand, and reduces the power noise transmitted when the turbocharger rotates at high speed on the other hand.

[0013] The protective cover shell and the flame-retardant sound-absorbing cotton layer 1 constitute the outermost wind-inlet rainproof cover shell of the air filter, and the gap between the flame-retardant sound-absorbing cotton layer 2 and the filter inner wall plate constitutes an air inlet channel from bottom to top, which plays a rainproof role; and the filter element can be maintained or replaced after the wind-inlet rainproof cover shell is removed; the flame-retardant sound-absorbing cotton layer 1 and the flame-retardant sound-absorbing cotton layer 2 form the inner wall of the air inlet channel, which reduces the friction noise of air flow and reduces the reflection and refraction of sound waves; the thinner wall inner wall plate of the filter is beneficial to reducing the overall weight of the air filter; the thicker wall filter connecting plate is beneficial to maintaining sufficient connection surface strength; the filter connecting pipe is connected to the air intake port of the engine through a connecting flange.

[0014] Furthermore, the protective cover shell is fixedly arranged on the filter body through a locking assembly.

[0015] Furthermore, a lock fixing plate is welded on the outer side of the filter inner wall plate, and the lock assembly is welded on the lock fixing plate to fix the air inlet rainproof cover.

[0016] Furthermore, four locking components and four locking fixing plates are provided, with two of them symmetrically distributed on both sides of the filter body.

[0017] Furthermore, a soundproof box fixing plate is arranged around the lower end surface of the filter lower sealing plate, and the lower end of the soundproof box fixing plate is fixedly connected to the soundproof box upper top cover.

[0018] Furthermore, the cavity between the filter lower sealing plate, the mute box fixing plate and the mute box upper cover is filled with a flame retardant sound absorbing cotton layer 3, thereby reducing the external noise of the filter lower sealing plate and the filter connecting pipe.

[0019] Furthermore, the filter connecting plate, the filter lower sealing plate and the soundproof box fixing plate are connected by connecting bolts.

[0020] Furthermore, a pressure difference indicator is fixedly arranged on the outer side of the inner wall plate of the filter.

[0021] Furthermore, the sound-absorbing porous plate is a cylindrical structure, and circular holes are arranged on the cylinder wall of the cylinder. The sound-absorbing porous plate is made of a thin steel plate with holes by stamping.

[0022] Furthermore, the filter element is made of metal or glass fiber.

[0023] The beneficial effects of the utility model are:

[0024] 1. The air filter is installed as a whole outside the silent box. When there is an abnormal situation such as gas leakage during the operation or shutdown of the gas generator set, the gas will be discharged into the atmosphere outside the box, avoiding the risk of explosion and poisoning caused by the discharge of flammable and toxic gases in the box.

[0025] 2. The filter body is designed with a protective cover shell, a filter inner wall plate, and a filter element. Fresh air flows from bottom to top through the gaps around the protective cover shell and the filter inner wall plate, and enters the engine after being filtered by the filter element, which can effectively solve the risk of rainwater entering when installed outside the soundproof box.

[0026] 3. The air filter is designed from the inside out with a sound-absorbing porous plate, filter element collision silencer, flame-retardant sound-absorbing cotton layer 1 and flame-retardant sound-absorbing cotton layer 2 to reduce friction noise and reflection and refraction of sound waves, and the protective cover shell collision silencer has multiple levels of noise reduction to reduce the two-way dynamic noise generated by air flow and turbocharger rotation.

[0027] 4. The air filter is directly connected to the soundproof box fixing plate through the filter lower sealing plate of the filter body, and is filled with three layers of flame-retardant sound-absorbing cotton around the connection. On the one hand, it reduces the installation height of the equipment for easy maintenance and replacement of the filter element, and on the other hand, it helps to reduce external noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 It is a side structural schematic diagram of the utility model;

[0030] Figure 3 for Figure 1 A magnified schematic diagram of the structure in the middle.

[0031] In the figure: 1. Protective cover shell; 2. Flame retardant sound-absorbing cotton layer one; 3. Filter element; 4. Flame retardant sound-absorbing cotton layer two; 5. Lock assembly; 6. Lock fixing plate; 7. Filter inner wall plate; 8. Filter connecting plate; 9. Connecting bolts; 10. Soundproof box fixing plate; 11. Flame retardant sound-absorbing cotton layer three; 12. Filter lower sealing plate; 13. Silencing porous plate; 14. Filter connecting pipe; 15. Connecting flange; 16. Soundproof box upper cover; 17. Pressure difference indicator. DETAILED DESCRIPTION

[0032] The utility model is described and illustrated in detail below in conjunction with the accompanying drawings.

[0033] Example 1

[0034] like Figure 1-3 As shown, the air filter for the silent box-type gas generator set comprises a filter body, a protective cover shell 1 is fixedly arranged on the top of the filter body, and a flame-retardant sound-absorbing cotton layer 2 is arranged inside the protective cover shell 1;

[0035] The filter body includes a filter inner wall plate 7, and a flame-retardant sound-absorbing cotton layer 4 is arranged on the outer side of the filter inner wall plate 7; a filter connecting plate 8 is welded to the lower inner side of the filter inner wall plate 7, a filter lower sealing plate 12 is welded to the lower end of the filter connecting plate 8, a sound-absorbing porous plate 13 is welded to the upper end surface of the filter lower sealing plate 12, a filter connecting pipe 14 is welded vertically downward to the lower end surface of the filter lower sealing plate 12, and a connecting flange 15 is arranged at one end of the filter connecting pipe 14 away from the filter lower sealing plate 12; a filter element 3 is fixedly arranged on the upper part of the inner cavity of the filter body.

[0036] The air filter is installed outside the soundproof box as a whole. Fresh air flows from bottom to top through the gaps around the protective cover 1 and the filter inner wall plate 7. After being filtered by the filter element 3 and the sound-absorbing porous plate 13, it enters the engine through the connection between the connecting flange 15 on the filter connecting pipe 14 and the engine air inlet. The air filter reduces the friction noise generated by the air intake on the one hand, and reduces the power noise transmitted when the turbocharger rotates at high speed on the other hand.

[0037] The protective cover shell 1 and the flame retardant sound-absorbing cotton layer 2 constitute the outermost wind inlet rainproof cover shell of the air filter, and the gap between the flame retardant sound-absorbing cotton layer 2 4 and the filter inner wall plate 7 constitutes an air inlet channel from bottom to top, which plays a rainproof role; and the filter element 3 can be maintained or replaced after the wind inlet rainproof cover shell is removed; the flame retardant sound-absorbing cotton layer 1 2 and the flame retardant sound-absorbing cotton layer 2 4 form the inner wall of the air inlet channel, which reduces the friction noise of air flow and reduces the reflection and refraction of sound waves; the thinner wall filter inner wall plate 7 is conducive to reducing the overall weight of the air filter; the thicker wall filter connecting plate 8 is conducive to maintaining sufficient connection surface strength; the filter connecting pipe 14 is connected to the air intake port of the engine through the connecting flange 15.

[0038] The protective cover shell 1 is fixedly arranged on the filter body through the locking assembly 5.

[0039] A lock fixing plate 6 is welded on the outer side of the filter inner wall plate 7, and the lock assembly 5 is welded on the lock fixing plate 6. The wind inlet rainproof cover shell is fixed.

[0040] There are four locking components 5 and four locking fixing plates 6, two of which are symmetrically distributed on both sides of the filter body.

[0041] The two sides of the lower end surface of the filter lower sealing plate 12 are provided with a soundproof box fixing plate 10, and the lower end of the soundproof box fixing plate 10 is fixedly connected with the soundproof box upper cover 16.

[0042] The cavity between the filter lower sealing plate 12, the mute box fixing plate 10, and the mute box upper cover 16 is filled with a flame retardant sound absorbing cotton layer 3 11. The external noise of the filter lower sealing plate 12 and the filter connecting pipe 14 is reduced.

[0043] The filter connecting plate 8 , the filter lower sealing plate 12 and the soundproof box fixing plate 10 are connected by connecting bolts 9 .

[0044] A pressure difference indicator 17 is fixedly arranged on the outer side of the filter inner wall plate 7 .

[0045] The sound-absorbing porous plate 13 is a cylindrical structure, and a circular hole is arranged on the cylinder wall of the cylinder. The sound-absorbing porous plate 13 is made of a thin steel plate with holes by stamping.

[0046] The filter element 3 is made of metal or glass fiber.

Claims

1. A silent box-type air filter for a gas generator set, comprising a filter body, characterized in that: A protective cover shell (1) is fixedly arranged on the top of the filter body, and a flame-retardant sound-absorbing cotton layer (2) is arranged inside the protective cover shell (1); The filter body comprises a filter inner wall plate (7), and a second flame-retardant sound-absorbing cotton layer (4) is arranged on the outer side of the filter inner wall plate (7); a filter connecting plate (8) is welded to the lower inner side of the filter inner wall plate (7), a filter lower sealing plate (12) is welded to the lower end of the filter connecting plate (8), a sound-absorbing porous plate (13) is welded to the upper end surface of the filter lower sealing plate (12), a filter connecting pipe (14) is welded vertically downward to the lower end surface of the filter lower sealing plate (12), and a connecting flange (15) is arranged at one end of the filter connecting pipe (14) away from the filter lower sealing plate (12); and a filter element (3) is fixedly arranged at the upper part of the inner cavity of the filter body.

2. The air filter for a silent box-type gas generator set according to claim 1, characterized in that: The protective cover shell (1) is fixedly arranged on the filter body via a locking assembly (5).

3. The air filter for a silent box-type gas generator set according to claim 2, characterized in that: A lock fixing plate (6) is welded to the outer side of the filter inner wall plate (7), and the lock assembly (5) is welded to the lock fixing plate (6).

4. The air filter for a silent box-type gas generator set according to claim 3, characterized in that: Four locking components (5) and four locking fixing plates (6) are provided, two of which are symmetrically distributed on both sides of the filter body.

5. The air filter for a silent box-type gas generator set according to claim 1, characterized in that: A soundproof box fixing plate (10) is arranged around the lower end surface of the filter lower sealing plate (12), and a soundproof box upper cover (16) is fixedly connected to the lower end of the soundproof box fixing plate (10).

6. The air filter for a silent box-type gas generator set according to claim 5, characterized in that: The cavity between the filter lower sealing plate (12), the soundproof box fixing plate (10), and the soundproof box upper cover (16) is filled with a third flame-retardant sound-absorbing cotton layer (11).

7. The air filter for a silent box-type gas generator set according to claim 5, characterized in that: The filter connecting plate (8), the filter lower sealing plate (12) and the soundproof box fixing plate (10) are connected via connecting bolts (9).

8. The air filter for a silent box-type gas generator set according to claim 1, characterized in that: A pressure difference indicator (17) is fixedly arranged on the outer side of the filter inner wall plate (7).

9. The air filter for a silent box-type gas generator set according to claim 1, characterized in that: The sound-absorbing porous plate (13) is a cylindrical structure, and circular holes are arranged on the cylinder wall of the cylinder.

10. The air filter for a silent box-type gas generator set according to claim 1, characterized in that: The filter element (3) is made of metal or glass fiber.

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