A diesel generator set soundproof box
By using composite seals and detection mechanisms in the soundproof enclosure of the diesel generator set, the problems of noise leakage and inconvenient maintenance have been solved, achieving multi-layer sealing and real-time monitoring, thus improving sound insulation and ease of maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG HUALI POWER EQUIP CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-03
AI Technical Summary
The existing noise reduction structure of the soundproof box of diesel generator set is simple, resulting in serious noise leakage and inconvenience in maintenance.
A composite sealing element (a U-shaped ring and a first sealing ring) is used between the base and the housing, and a second sealing ring is used between the housing and the top plate. Combined with a detection mechanism consisting of a camera, a drive motor, and a lead screw motor, multi-layer sealing and real-time observation from multiple angles are achieved.
It effectively reduces noise leakage, achieves overall sealing and sound insulation, and simplifies maintenance operations by monitoring the generator set status in real time through a camera.
Smart Images
Figure CN224459939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of generator set technology, and in particular to a silent enclosure for a diesel generator set. Background Technology
[0002] Patent publication number CN222184936U discloses a silent enclosure for a diesel generator set, including an enclosure body with sound-insulating cotton glued to the inside; a hinged door on the front right side of the enclosure body; a display and a PLC bolted to the left side of the front of the enclosure body; a wiring conduit embedded in the left side of the enclosure body; a supporting splicing base structure installed at the bottom of the enclosure body; and a protective observation top structure installed at the top of the enclosure body. The protective observation top structure allows for photographing the covered diesel generator set and comprehensive observation and maintenance work.
[0003] However, this patent only relies on the sound insulation cotton between the enclosure and the base to reduce noise in the generator set inside the enclosure, and the noise reduction structure is simple. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a silent enclosure for diesel generator sets.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a diesel generator set soundproof enclosure, comprising a base, a first sealing groove formed on the top surface of the base, a sealing element provided in the first sealing groove, the top surface of the sealing element abutting against a housing, a pressure ring fixedly sleeved on the outside of the housing, the pressure ring abutting against the top surface of the base, the top surface of the housing abutting against a top plate, a second sealing groove formed on the bottom surface of the top plate, a second sealing ring provided in the second sealing groove, the second sealing ring fixed to the top surface of the housing, a conduit horizontally fixed on the side of the housing, a fixing element symmetrically abutting against the top surface of the top plate, the fixing element being connected to the base, a detection mechanism provided on the bottom surface of the top plate, an inspection port provided on the outside of the housing, and a hinged door within the inspection port.
[0006] As a further description of the above technical solution: the detection mechanism includes two symmetrically fixed side plates on the bottom surface of the top plate, and a screw is rotatably connected between the two side plates. A U-shaped block is threaded through the outer edge of the screw, and the U-shaped block is slidably connected to the bottom surface of the top plate. A camera is rotatably connected inside the U-shaped block. A drive motor is fixedly connected to the side of the U-shaped block, and the output end of the drive motor is driven by a rotating shaft. The rotating shaft rotatably passes through one side of the U-shaped block and is fixedly connected to the camera. A lead screw motor is fixedly connected to the outer side of one of the side plates, and the output end of the lead screw motor is driven by one end of the screw.
[0007] As a further description of the above technical solution: a PLC controller is fixedly connected to the outside of the housing, a display is fixedly connected to the outside of the housing, the display is electrically connected to the PLC controller, and the camera is electrically connected to the PLC controller. A guide groove is formed on the bottom surface of the top plate, a guide block is slidably connected in the guide groove, and the guide block is fixedly connected to the U-shaped block.
[0008] As a further description of the above technical solution: the sealing element includes a U-shaped ring slidably connected in the first sealing groove, the top surface of the U-shaped ring abutting against the first sealing ring, and the first sealing ring abutting against the bottom surface of the housing.
[0009] As a further description of the above technical solution: a first sliding groove is formed in the first sealing groove, a first slider is slidably connected in the first sliding groove, the first slider is fixedly connected to the first sealing ring, a first spring is fixed together between the first sliding groove and the first slider, a plurality of through holes are formed on the top surface of the U-shaped ring, a telescopic rod is sleeved in the through holes, the telescopic rod is fixed between the first sealing ring and the first sealing groove, and the U-shaped ring is made of rubber.
[0010] As a further description of the above technical solution: the fixing component includes two L-shaped plates symmetrically and slidably connected to the outside of the base. The outer edges of the L-shaped plates are rotatably connected to U-shaped plates. A positioning groove is opened on the top surface of the top plate, and a positioning block is inserted into the positioning groove. The positioning block is fixed to the bottom surface of the U-shaped plate. A support plate is provided below the L-shaped plate. A stud is slidably inserted through the top surface of the support plate. The stud is vertically fixed to the bottom surface of the L-shaped plate. A nut is threaded onto the outer edge of the stud. The nut abuts against the bottom surface of the support plate. A limiting block is fixedly connected to the end of the stud.
[0011] As a further description of the above technical solution: a second sliding groove is vertically opened on the outer side of the base, a second slider is slidably connected in the second sliding groove, the second slider is fixedly connected to the L-shaped plate, and a second spring is fixed together between the second sliding groove and the second slider.
[0012] This utility model has the following beneficial effects:
[0013] 1. Compared with existing technologies, this diesel generator set soundproof enclosure features a composite seal consisting of a U-ring and a first sealing ring between the base and the housing, and a second sealing ring between the housing and the top plate. This multi-layer sealing design effectively blocks the path of sound transmission through the gaps in the enclosure's connections, significantly reducing noise leakage. In particular, the spring and telescopic rod structure in the seals ensures that all connecting parts remain tightly fitted under pressure or vibration, compensating for gaps that may arise due to deformation. This maintains stable and excellent sound insulation under various operating conditions, achieving a technological upgrade from "single-layer sound insulation" to "overall sealed sound insulation."
[0014] 2. Compared with existing technologies, this diesel generator set soundproof box integrates a detection mechanism consisting of a camera, drive motor, and lead screw motor. Operators can observe and record the operating status of the generator set inside the box from all angles and in real time via a monitor without frequently opening the box door. This is both safe and efficient. At the same time, the innovative fastener design makes the disassembly and assembly of the top plate simple and quick. Simply loosen the nut to move the L-shaped plate, thereby easily removing the top plate for large-scale maintenance, solving the problem of inconvenient opening of the top cover of traditional soundproof boxes. Attached Figure Description
[0015] Figure 1 This is a perspective view of the overall structure of a diesel generator set soundproof box proposed in this utility model;
[0016] Figure 2 This utility model proposes a soundproof enclosure for a diesel generator set. Figure 1 Enlarged view of the structure at point A in the middle;
[0017] Figure 3 This is a main sectional view of the overall structure of the top plate of the soundproof box of a diesel generator set proposed in this utility model;
[0018] Figure 4 This is a cross-sectional view of the connection between the housing and the base of a diesel generator set soundproof box according to the present invention.
[0019] Figure 5 This is a cross-sectional view of the connection between the L-shaped plate and the base of a diesel generator set soundproof box proposed in this utility model.
[0020] Legend:
[0021] 1. Base; 2. Pressure ring; 3. Housing; 4. U-shaped plate; 5. PLC controller; 6. Display; 7. Door; 8. Inspection port; 9. Top plate; 10. Conduit; 11. L-shaped plate; 12. Support plate; 13. Limiting block; 14. Stud; 15. Nut; 16. Positioning groove; 17. Positioning block; 18. Side plate; 19. Screw; 20. Guide groove; 21. U-shaped block; 22. Camera; 23. Drive motor; 24. Guide block; 25. Lead screw motor; 26. First slide groove; 27. First slider; 28. First spring; 29. Hobbit ring; 30. Telescopic rod; 31. Through hole; 32. First sealing ring; 33. First sealing groove; 34. Second slide groove; 35. Second slider; 36. Second spring. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Reference Figures 1 to 5 The present invention provides a silent housing for a diesel generator set: including a base 1, a first sealing groove 33 is provided on the top surface of the base 1, a sealing element is provided in the first sealing groove 33, the top surface of the sealing element abuts against the housing 3, a pressure ring 2 is fixedly sleeved on the outside of the housing 3, the pressure ring 2 abuts against the top surface of the base 1, the top surface of the housing 3 abuts against the top plate 9, a second sealing groove is provided on the bottom surface of the top plate 9, a second sealing ring is provided in the second sealing groove, the second sealing ring is fixed to the top surface of the housing 3, a conduit 10 is horizontally fixed on the side of the housing 3, a fixing element is symmetrically abutted against the top surface of the top plate 9, the fixing element is connected to the base 1, a detection mechanism is provided on the bottom surface of the top plate 9, an inspection port 8 is provided on the outside of the housing 3, and a door 7 is hinged in the inspection port 8;
[0024] The sealing element includes a U-shaped ring 29 slidably connected in the first sealing groove 33, the top surface of the U-shaped ring 29 abutting against the first sealing ring 32, the first sealing ring 32 abutting against the bottom surface of the housing 3, a first sliding groove 26 is opened in the first sealing groove 33, a first slider 27 is slidably connected in the first sliding groove 26, the first slider 27 is fixedly connected to the first sealing ring 32, a first spring 28 is fixed together between the first sliding groove 26 and the first slider 27, a plurality of through holes 31 are opened on the top surface of the U-shaped ring 29, a telescopic rod 30 is sleeved in the through holes 31, and the telescopic rod 30 is fixed between the first sealing ring 32 and the first sealing groove 33. The U-shaped ring 29 is made of rubber.
[0025] The fastener includes two symmetrically slidably connected L-shaped plates 11 on the outside of the base 1. The outer edge of the L-shaped plates 11 is rotatably connected to a U-shaped plate 4. A positioning groove 16 is opened on the top surface of the top plate 9. A positioning block 17 is inserted into the positioning groove 16 and fixed to the bottom surface of the U-shaped plate 4. A support plate 12 is provided below the L-shaped plates 11. A stud 14 is slidably inserted through the top surface of the support plate 12. The stud 14 is vertically fixed to the bottom surface of the L-shaped plates 11. A nut 15 is threaded on the outer edge of the stud 14 and abuts against the bottom surface of the support plate 12. A limiting block 13 is fixedly connected to the end of the stud 14. A second sliding groove 34 is vertically opened on the outside of the base 1. A second slider 35 is slidably connected in the second sliding groove 34 and fixedly connected to the L-shaped plates 11. A second spring 36 is fixed together between the second sliding groove 34 and the second slider 35.
[0026] The detection mechanism includes two symmetrical side plates 18 fixed to the bottom surface of the top plate 9. The two side plates 18 are rotatably connected to a screw 19. A U-shaped block 21 is threaded through the outer edge of the screw 19. The U-shaped block 21 is slidably connected to the bottom surface of the top plate 9. A camera 22 is rotatably connected inside the U-shaped block 21. A drive motor 23 is fixedly connected to the side of the U-shaped block 21. The output end of the drive motor 23 is connected to a rotating shaft. The rotating shaft rotates through one side of the U-shaped block 21 and is fixedly connected to the camera 22. A lead screw motor 25 is fixedly connected to the outer side of one of the side plates 18. The output end of the lead screw motor 25 is connected to one end of the screw 19. A PLC controller 5 is fixedly connected to the outer side of the housing 3. A display 6 is fixedly connected to the outer side of the housing 3. The display 6 is electrically connected to the PLC controller 5, and the camera 22 is electrically connected to the PLC controller 5. A guide groove 20 is opened on the bottom surface of the top plate 9. A guide block 24 is slidably connected inside the guide groove 20. The guide block 24 is fixedly connected to the U-shaped block 21.
[0027] Working principle: When installing the housing 3 and the base 1, the generator body is fixed to the center of the top surface of the base 1 with bolts. Then, the housing 3 is installed into the first sealing groove 33 on the top surface of the base 1. When the housing 3 is placed on the base 1, its bottom surface presses against the first sealing ring 32, forming the first static seal, directly preventing sound waves from leaking from the gap at the bottom of the housing. The U-shaped ring 29 is slidably installed in the first sealing groove 33, and the first spring 28 provides continuous upward support below it. When the housing vibrates due to the operation of the internal generator set or is subjected to external pressure, a slight gap change may occur between the housing 3 and the base 1. At this time, the elastic force of the first spring 28 will push the first slider 27 (connecting the U-shaped ring 29 and the first sealing ring 32) to always press upward against the bottom surface of the housing 3, automatically compensating for the gap caused by vibration or deformation. The telescopic rod 30 ensures... The U-shaped ring 29 maintains stable vertical movement during compression and rebound without skewing. This dynamic compensation mechanism ensures that the bottom seal remains effective under various working conditions. The U-shaped ring 29 is made of rubber, which has good elasticity and sealing properties, further enhancing the sealing effect. Then, the cover plate is installed on the top surface of the housing 3. When the top plate 9 is on, the second sealing ring is tightly pressed between the second sealing groove and the top surface of the housing 3, forming a second reliable static seal, effectively isolating sound from the top connection. Then, the two U-shaped plates 4 are pulled upward, causing the L-shaped plate 11 to move upward, compressing the second spring 36. Then, the U-shaped plate 4 is flipped, so that the positioning block 17 on the bottom surface of the U-shaped plate 4 is inserted into the positioning groove 16 on the top surface of the top plate 9. The L-shaped plate 11 passes through the support plate 12 through the stud 14 at its bottom, and is then tightened with the nut 15.
[0028] When testing the operation of the generator inside housing 3, the lead screw motor 25 is started, and its output end drives the screw 19 to rotate. The U-shaped block 21, which is threadedly connected to the screw 19, cannot rotate under the constraint of the guide block 24 and the guide groove 20. It can only move linearly along the axis (i.e., the horizontal direction) of the screw 19. By controlling the forward and reverse rotation of the lead screw motor 25, the entire U-shaped block 21 and its components can be driven to move back and forth at the top of the housing, thereby changing the horizontal observation position of the camera 22. The drive motor 23 is started, and its output end drives the camera 22 to rotate vertically through the rotating shaft. By controlling the drive motor 23, the lens of the camera 22 can be tilted downwards, tilted to the side, or directed downwards, enabling multi-angle shooting of different parts of the generator set below (such as the engine, generator, fuel tank, control system, etc.). The real-time video signal captured by the camera 22 is transmitted to the PLC controller 5 via cable. After processing the signal, the PLC controller 5 outputs it to the display 6 for display. The operator only needs to observe the display 6 outside the enclosure to fully grasp the operating status of the unit (such as whether there is oil leakage, abnormal smoke, loose parts, etc.), which greatly reduces the frequency of opening the enclosure for inspection, making it both safe and convenient.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A diesel generator set silencer box comprising a base (1), characterised in that: The top surface of the base (1) has a first sealing groove (33) and a sealing element is provided in the first sealing groove (33). The top surface of the sealing element abuts against the housing (3). A pressure ring (2) is fixedly sleeved on the outside of the housing (3). The pressure ring (2) abuts against the top surface of the base (1). The top surface of the housing (3) abuts against the top plate (9). The bottom surface of the top plate (9) has a second sealing groove and a second sealing ring is provided in the second sealing groove. The second sealing ring is fixed to the top surface of the housing (3). A conduit (10) is horizontally fixed on the side of the housing (3). The top surface of the top plate (9) abuts against a fixing element. The fixing element is connected to the base (1). The bottom surface of the top plate (9) is provided with a detection mechanism. The outside of the housing (3) is provided with an inspection port (8). A door (7) is hinged in the inspection port (8).
2. A sound attenuating enclosure for a diesel generator set as claimed in claim 1, characterised in that: The detection mechanism includes two symmetrically fixed side plates (18) on the bottom surface of the top plate (9). The two side plates (18) are rotatably connected to a screw (19). A U-shaped block (21) is threaded through the outer edge of the screw (19). The U-shaped block (21) is slidably connected to the bottom surface of the top plate (9). A camera (22) is rotatably connected inside the U-shaped block (21). A drive motor (23) is fixedly connected to the side of the U-shaped block (21). The output end of the drive motor (23) is driven by a rotating shaft. The rotating shaft rotates through one side of the U-shaped block (21) and is fixedly connected to the camera (22). A lead screw motor (25) is fixedly connected to the outer side of one of the side plates (18). The output end of the lead screw motor (25) is driven by one end of the screw (19).
3. A sound attenuating enclosure for a diesel generator set as claimed in claim 2, characterised in that: A PLC controller (5) is fixedly connected to the outside of the housing (3), and a display (6) is fixedly connected to the outside of the housing (3). The display (6) is electrically connected to the PLC controller (5), and the camera (22) is electrically connected to the PLC controller (5). A guide groove (20) is opened on the bottom surface of the top plate (9). A guide block (24) is slidably connected in the guide groove (20). The guide block (24) is fixedly connected to the U-shaped block (21).
4. A sound attenuating enclosure for a diesel generator set as claimed in claim 1, characterised in that: The sealing element includes a loop (29) slidably connected in the first sealing groove (33), the top surface of the loop (29) abutting against the first sealing ring (32), and the first sealing ring (32) abutting against the bottom surface of the housing (3).
5. A sound attenuating enclosure for a diesel generator set as claimed in claim 4 wherein: A first sliding groove (26) is provided in the first sealing groove (33), and a first slider (27) is slidably connected in the first sliding groove (26). The first slider (27) is fixedly connected to the first sealing ring (32). A first spring (28) is fixed between the first sliding groove (26) and the first slider (27). A plurality of through holes (31) are provided on the top surface of the loop (29). A telescopic rod (30) is sleeved in the through hole (31). The telescopic rod (30) is fixed between the first sealing ring (32) and the first sealing groove (33). The loop (29) is made of rubber.
6. A sound attenuating enclosure for a diesel generator set as claimed in claim 1, characterised in that: The fastener includes two L-shaped plates (11) symmetrically slidably connected to the outside of the base (1). The outer edge of the L-shaped plates (11) is rotatably connected to a U-shaped plate (4). A positioning groove (16) is opened on the top surface of the top plate (9). A positioning block (17) is inserted into the positioning groove (16). The positioning block (17) is fixed to the bottom surface of the U-shaped plate (4). A support plate (12) is provided below the L-shaped plate (11). A stud (14) is slidably inserted through the top surface of the support plate (12). The stud (14) is vertically fixed to the bottom surface of the L-shaped plate (11). A nut (15) is threaded onto the outer edge of the stud (14). The nut (15) abuts against the bottom surface of the support plate (12). A limiting block (13) is fixedly connected to the end of the stud (14).
7. A diesel generator set soundproof enclosure according to claim 6, characterized in that: A second slide groove (34) is vertically opened on the outer side of the base (1). A second slider (35) is slidably connected in the second slide groove (34). The second slider (35) is fixedly connected to the L-shaped plate (11). A second spring (36) is fixed together between the second slide groove (34) and the second slider (35).