Low-noise hydrogen ammonia internal combustion engine generator set

Abstract

The invention relates to the technical field of generators, in particular to a low-noise hydrogen ammonia internal combustion engine generator set. The unit comprises a unit body, the unit body comprises an outer machine shell, a shell cavity is formed in the outer machine shell, a side supporting assembly is arranged in the shell cavity and comprises a supporting mechanism and a sound insulation assembly, and the end, away from a structural part, of the supporting mechanism is connected with a driving mechanism. The sound insulation assembly arranged in the supporting mechanism can play a practical physical sound insulation role on the unit body, the unit body is driven by the driving mechanism to rotate in the shell cavity, rotation of an abutting strip can push a middle page plate, the position of the middle page plate in the shell cavity is changed, the temperature in the shell cavity is balanced, heat gathered on the surface of a structural part for a long time is reduced, and the service life of the unit body is prolonged. And deformation of the structural member caused by heating is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and more specifically, to a low-noise hydrogen-ammonia internal combustion engine generator set. Background Art

[0002] With the growing global demand for clean energy and the increasing awareness of environmental protection, traditional internal combustion engine generator sets fueled by gasoline and diesel are gradually unable to meet the requirements of sustainable development due to their large emissions of greenhouse gases and pollutants. Against this background, hydrogen-ammonia internal combustion engine generator sets, as a new type of power generation equipment, have emerged;

[0003] Hydrogen has the characteristics of cleanness and high efficiency, and its combustion products are mainly water, with almost no greenhouse gas emissions. Although the combustion process of ammonia is relatively complex, it has a high nitrogen content and can be produced in various ways, such as by using renewable energy to electrolyze water to produce hydrogen and then synthesize ammonia, which can reduce the dependence on traditional fossil fuels to a certain extent;

[0004] When a hydrogen-ammonia generator set is in operation, the combustion reaction of the fuel inside the hydrogen-ammonia internal combustion engine, the reciprocating motion of the piston, and the friction between various mechanical components will cause vibrations. The vibrations are transmitted from the inside of the internal combustion engine to the unit housing, and the unit housing is affected by stress and is prone to generating noise;

[0005] In the prior art, sound-absorbing panels are often installed inside the casing of the unit. For example, in a noise reduction device for a generator set with the Chinese patent publication number CN222558631U, a noise reduction board is provided on the inner wall of the noise reduction box. Trapezoidal grooves are evenly opened on the inner wall of the noise reduction board, and the first sound-absorbing cotton is bonded to the end of the trapezoidal groove far from its opening. The second sound-absorbing cotton is also bonded to the inner wall of the V-shaped plate installed in the air inlet hood and the air outlet hood. Through the setting of these sound-absorbing cottons, the noise transmission of the generator set can be effectively reduced and the noise reduction effect can be improved. However, the above-mentioned noise reduction board is in a static state during actual use, and its sound-absorbing effect has certain limitations when dealing with the complex noise sources of hydrogen-ammonia internal combustion engine generator sets. Specifically, the sound wave reflection path of the static sound-absorbing board is single, and the fixed surface makes it inconvenient for complex noises to be fully scattered, and it is easy to penetrate or propagate in other directions. In addition, the static sound-absorbing board is difficult to adapt to multi-frequency noises. Its structure is inconvenient to increase the propagation path for low-frequency noises, nor can it strengthen the scattering and absorption of high-frequency noises, and it is difficult to fully meet the requirements for noise reduction during actual operation;

[0006] In view of this, there is an urgent need for a low-noise hydrogen-ammonia internal combustion engine generator set to solve the above problems. Summary of the Invention

[0007] The object of the present invention is to provide a low-noise hydrogen-ammonia internal combustion engine generator set. By improving the structure of the generator set and the sound-absorbing components, the support mechanism and the sound-insulating component can cooperate during the operation of the generator set to achieve efficient sound absorption in multiple dimensions, so as to reduce the operating noise of the generator set and improve the overall noise reduction performance, thereby solving the problems raised in the above background technology, that is:

[0008] When the hydrogen-ammonia generator set operates, noise is generated due to internal vibration. The existing static sound-absorbing board cannot fully meet the noise reduction requirements because of the single reflection path and difficulty in adapting to multi-frequency noise.

[0009] To achieve the above object, the low-noise hydrogen-ammonia internal combustion engine generator set includes a generator set body. The generator set body includes an outer casing. An inner cavity is formed inside the outer casing. Structural members are installed inside the inner cavity. An outer mounting sleeve is sleeved on the surface of the outer casing. Two side support components are arranged inside the inner cavity. The two side support components are symmetrically arranged on both sides of the structural members;

[0010] Each of the side support components includes a support mechanism and a sound-insulating component. One end of the support mechanism away from the structural member is connected to a driving mechanism. The driving mechanism includes a sliding disk and a driving motor;

[0011] The support mechanism includes two folding support rods. Anti-stripes are installed at the tops of both of them. Insertion holes are opened inside both of the anti-stripes;

[0012] The sound-insulating component includes two middle page plates. The two middle page plates are sleeved inside the anti-stripes through the insertion holes;

[0013] During the overall operation of the generator set body, the driving motor drives the folding support rods to rotate periodically through the sliding disk, so that the anti-stripes intermittently abut against the surface of the structural member. The two anti-stripes cooperate with each other to fit both sides of the structural member. At the same time, the two anti-stripes drive the middle page plates of the sound-insulating component to change the spatial state to achieve multi-dimensional noise absorption.

[0014] In the above solution, through the side support components symmetrically arranged inside the outer casing, driven by the driving motor through the sliding disk, the folding support rods and the anti-stripes of the support mechanism fit both sides of the structural member. The anti-stripes assist in absorbing the heat dissipated by the structural member; at the same time, the anti-stripes drive the middle page plates of the sound-insulating component to change the spatial state, realizing multi-dimensional noise absorption, thereby improving the operating stability and noise reduction effect of the generator set.

[0015] On this basis, the sound insulation component further includes three connecting rods, and fixed rods are fixedly installed at the tops of the three connecting rods. One ends of the three fixed rods away from the connecting rods are all connected to the bottom of the inner cavity of the housing cavity. The two middle page plates are located between the three connecting rods. The driving mechanism includes a collar rod installed on the surface of the outer housing. An activity hole is formed in the surface of the outer housing. The two sliding disks are rotatably arranged inside the activity hole. The two sliding disks are stacked. One ends of the two folding support rods are respectively connected to the surfaces of the two sliding disks close to the structural member. Two driving motors are provided. The rotating shafts of the two sliding disks are respectively fixedly connected to the output shafts of the two driving motors. The two driving motors are both installed on the surface of the collar rod;

[0016] A plurality of heat transfer fins are fixedly installed on the surfaces of one ends of the two pressure strips away from the structural member. The two pressure strips and the plurality of heat transfer fins are all made of heat-absorbing materials;

[0017] Both of the two middle page plates are prepared by using sound-absorbing materials;

[0018] In this technical solution, the three connecting rods in the sound insulation component and the fixed rods fixedly installed at their tops provide additional support points for the entire sound insulation component, making the installation of the sound insulation component in the housing cavity more stable, and enabling it to better maintain its position during the operation of the unit, ensuring the stability of the middle page plates when absorbing noise; in addition, the two middle page plates are prepared by using sound-absorbing materials. Combining with the pressure strips driving the middle page plates to change the spatial state, when the unit operates to generate noise, the middle page plates at different positions and angles can more effectively absorb sound waves in different directions and frequencies. The middle page plates change their spatial positions driven by the pressure strips, and combined with their sound-absorbing material characteristics, it increases the reflection and scattering paths of sound waves, enabling the sound waves to experience more propagation processes before being absorbed, and more efficiently reducing noise, further improving the overall noise reduction performance of the generator set.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] In this low-noise hydrogen-ammonia internal combustion engine generator set, by placing the structural members for operation and power generation inside the outer housing, preliminary protection of the structural members can be achieved, and at the same time, it can also play a certain sound insulation role, reducing the outward propagation of the noise generated when the structural members operate. During the operation of the structural members, the driving mechanism drives the support mechanism to operate. Through the material characteristics of the pressure strips, it assists in absorbing the heat dissipated from the surface of the structural members. In addition, the sound insulation component equipped in the support mechanism can play an effective physical sound insulation role for the unit body, further blocking the propagation of noise;

[0021] Meanwhile, the abutting strip slides in the housing cavity driven by the driving mechanism. When the abutting strip rotates, it will push the middle page plate, causing the position of the middle page plate in the housing cavity to change. The middle page plate is made of sound-absorbing material and folds under the drive of the driving mechanism. Combined with the part of the inner wall of the outer housing also made of sound-absorbing material, it can achieve sound-absorbing effects from multiple dimensions. The sound-absorbing materials at different positions can absorb sound waves propagating in different directions. The folded middle page plate can also increase the reflection and scattering paths of sound waves, enabling sound waves to experience more propagation processes before being absorbed, thereby more effectively reducing noise and improving the overall noise reduction performance of the generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the housing cavity of the present invention;

[0024] Figure 3 is a schematic diagram of the abutting strip support structure member of the present invention;

[0025] Figure 4 is a schematic diagram of the abutting strip detachment structure member of the present invention;

[0026] Figure 5 For the present invention Figure 3 schematic diagram of the structure at position A;

[0027] Figure 6 is a schematic diagram of the support mechanism structure of the present invention;

[0028] Figure 7 is a schematic diagram of the connection structure between the middle page plate and the abutting strip of the present invention;

[0029] Figure 8 For the present invention Figure 7 schematic diagram of the structure at position B;

[0030] Figure 9 is a schematic diagram of multi-dimensional noise reduction sound wave absorption in the present invention;

[0031] Figure 10 is a schematic diagram of the disassembly structure between the middle page plate and the abutting strip of the present invention.

[0032] The meanings of the various reference numerals in the figure are as follows:

[0033] 1, unit body; 11, outer housing; 12, outer mounting sleeve; 13, structural member; 10, housing cavity;

[0034] 2, side support assembly; 21, support mechanism; 22, sound insulation assembly;

[0035] 211. Folding support rod; 212. Bracing strip; 213. Heat transfer fin; 214. Sliding bend; 215. Insertion hole;

[0036] 221. Connecting rod; 222. Middle page board; 223. Fixed rod;

[0037] 3. Driving mechanism; 31. Collar rod; 32. Movable hole; 33. Sliding disk; 34. Driving motor;

[0038] 4. Limiting rod;

[0039] 5. Wear-resistant pad; 51. Installation groove. Specific implementation manner

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1, please refer to Figure 1 and Figure 2 As shown, the purpose of this embodiment is to provide a low-noise hydrogen-ammonia internal combustion engine generator set, including a unit body 1. The unit body 1 includes an outer casing 11. An inner cavity 10 is formed inside the outer casing 11. A structural member 13 is installed inside the inner cavity 10. An outer mounting sleeve 12 is installed on the surface of the outer casing 11 in a covering manner. A side support assembly 2 is provided inside the inner cavity 10. There are two side support assemblies 2, which are symmetrically installed with the structural member 13 as the center;

[0042] The side support assembly 2 includes a support mechanism 21 and a sound insulation assembly 22. One end of the support mechanism 21 away from the structural member 13 is connected to a driving mechanism 3. The two support mechanisms 21 cooperate with each other to fit on both sides of the structural member 13. The sound insulation assembly 22 is used to adsorb the noise generated during the operation of the structural member 13. During the overall operation of the unit body 1, the driving mechanism 3 drives the support mechanism 21 to rotate, for intermittently fitting on the side end of the structural member 13.

[0043] Inside the inner cavity 10, a support mechanism 21 is provided. The support mechanism 21 includes two folding support rods 211. The two folding support rods 211 are symmetrically arranged. At the top of one end of the two folding support rods 211 close to the structural member 13, bracing strips 212 are fixedly installed. Insertion holes 215 are opened in the middle of the two bracing strips 212.

[0044] The setting of the sound insulation component 22 can form a barrier inside the housing cavity 10 to absorb the noise generated during the operation of the structural member 13. Next, the specific structure of the sound insulation component 22 will be disclosed. The sound insulation component 22 includes three connecting rods 221. At the top of each of the three connecting rods 221, a fixing rod 223 is fixedly installed. One end of each of the three fixing rods 223 away from the connecting rod 221 is connected to the bottom of the inner cavity of the housing cavity 10. Between the three connecting rods 221, two middle plates 222 are provided. Combining Figure 10 As shown, the two middle plates 222 are respectively inserted into the insertion holes 215 in the two abutting strips 212.

[0045] Referring to Figure 2 and combining Figure 3 As shown, inside the housing cavity 10, there are three connecting rods 221 between the surface of the structural member 13 and the inner wall of the housing cavity 10. At the top of each of these three connecting rods 221, they are all installed on the top of the housing cavity 10 through the fixing rods 223, and two middle plates 222 are connected between them. As Figure 6 shown, the two abutting strips 212 on the same side can be attached to the surface of the structural member 13;

[0046] In this way, the stability of the structural member 13 during operation is protected. In addition, the middle parts of the two middle plates 222 are located inside the two abutting strips 212, jointly forming a relatively stable structural system to ensure the smooth operation of the structural member 13 in all directions;

[0047] Among them, the setting of the two middle plates 222 on the same side can block the surface of the structural member 13, thereby forming a physical sound insulation barrier. When the structural member 13 operates and generates noise, on the one hand, the material of the middle plate 222 has certain sound absorption characteristics. When the noise contacts the surface of the middle plate 222, part of the sound energy will be converted and absorbed. On the other hand, due to the existence of the middle plate 222, the noise propagation path is blocked, and the sound wave will be reflected when it encounters the middle plate 222 and cannot directly spread to the outside, thereby reducing the intensity of the noise spreading to the outside;

[0048] As Figure 3As shown, when the abutting strip 212 rotates in the housing cavity 10 under drive, during the rotation process, it will contact the middle page plate 222 and exert a force. As the abutting strip 212 rotates, this force pushes the middle page plate 222, enabling it to intermittently switch between the folded state and the horizontal state. When in the folded state, the middle page plate 222 forms multiple surfaces at different angles, greatly increasing the opportunities for sound waves to be reflected and scattered on its surface. The surfaces at different angles cause the propagation direction of the sound waves to be changed multiple times, continuously reflecting back and forth in the space between the structural member 13 and the outer housing 11, extending the propagation path, and thus increasing the possibility of being absorbed. Moreover, during the conversion process of the middle page plate 222 between the folded and horizontal states, the contact mode between its surface and the sound waves continuously changes; when in the horizontal state, the middle page plate 222 mainly reflects and absorbs sound waves with a plane; in the folded state, multiple surfaces at different angles will have different effects on sound waves of different frequencies. For example, when the angle with the incident direction of the sound waves is small, the surface of the sound absorption plate is more conducive to reflecting high-frequency sound waves, and when the angle with the incident direction of the sound waves is large, it has a better scattering effect on low-frequency sound waves. This dynamic state conversion enables the middle page plate 222 to handle sound waves in a wider frequency range, further enhancing the sound absorption effect.

[0049] In addition, combined with Figure 9 , the sound-absorbing material (the same material as the middle page plate 222) laid on the inner wall of the outer housing 11 also participates in the sound insulation process. In terms of spatial dimension, the middle page plate 222 is located inside the housing cavity 10 close to the structural member 13, and the sound-absorbing material on the inner wall of the outer housing 11 is located on the periphery of the housing cavity 10. The two form inner and outer two-layer sound insulation areas in space. After the noise is generated, first, it passes through the barrier formed by the middle page plate 222. After effects such as reflection, absorption, and scattering, when the remaining noise propagates to the inner wall of the outer housing 11, it will be absorbed and reflected again by the sound-absorbing material on the inner wall. The two cooperate with each other to suppress the noise in a wider frequency range. Through the synergistic effects in multiple aspects such as the spatial dimension and the frequency dimension, the noise is suppressed from multiple dimensions, further significantly enhancing the overall sound insulation effect.

[0050] Next, the structure of the abutting strip 212 will be disclosed. The driving mechanism 3 includes a collar rod 31 installed on the surface of the outer housing 11. An activity hole 32 is opened on the surface of the outer housing 11. Two sliding disks 33 are rotatably arranged inside the activity hole 32. The two sliding disks 33 are stacked. The bottom ends of the two folding support rods 211 are respectively connected to the surfaces of one ends of the two sliding disks 33 close to the structural member 13. The rotation shafts of the two sliding disks 33 are respectively fixedly connected to the output shafts of the two driving motors 34. The two driving motors 34 are both installed on the surface of the collar rod 31.

[0051] A plurality of heat transfer fins 213 are fixedly installed on the surfaces of the two ends of the two abutting strips 212 far from the structural member 13. The two abutting strips 212 and the plurality of heat transfer fins 213 are all heat-absorbing materials.

[0052] Combined with Figure 2 and Figure 6 As shown, at the bottom of two abutting strips 212 on the same side, a folding support rod 211 is firmly installed. One end of each of these two folding support rods 211 away from the abutting strip 212 is respectively connected to two sliding discs 33. Moreover, the rotation axes of the two sliding discs 33 are tightly connected to the output shafts of two driving motors 34 respectively;

[0053] When the two driving motors 34 start to operate, they will drive the connected sliding discs 33 to rotate. The rotation of the sliding discs 33 will cause the folding support rods 211 connected thereto to rotate inside the housing cavity 10. During the specific operation process, when the driving motor 34 is turned on, the folding support rod 211 will drive the abutting strip 212 to rotate together;

[0054] It is worth mentioning that the abutting strip 212 is equipped with heat transfer fins 213. The heat transfer fins 213 can absorb the heat on the surface of the structural member 13. After absorbing the heat, it will conduct the heat to the area between the middle page plate 222 and the inner wall of the outer housing 11. This area is relatively open and the air flow is good. Conducting the heat here is more conducive to dissipating it to the external environment (both the abutting strip 212 and the heat transfer fins 213 are made of heat-absorbing materials, such as aluminum alloy);

[0055] After completing one operation, the driving motor 34 will run in the reverse direction. At this time, it will drive the abutting strip 212 and the folding support rod 211 to rotate in the reverse direction. Under the continuous and alternating forward and reverse operation of the driving motor 34, the two abutting strips 212 on both sides will perform repeated fitting operations on the surface of the structural member 13 in an intermittent manner, which can effectively reduce the accumulation of heat on the surface of the structural member 13, keep the structural member 13 in a good working state all the time, extend the service life of the structural member 13, ensure the stable operation of the entire device, and the intermittent fitting can give the structural member 13 a chance to restore part of the stress balance during the fitting gap period;

[0056] In addition, when the abutting strip 212 is separated from the structural member 13, this creates a heat dissipation time for the abutting strip 212 itself. Because when it is in contact with the structural member 13, the abutting strip 212 will absorb some heat, and the short separation can allow the abutting strip 212 to better dissipate the absorbed heat, avoiding affecting its own performance due to long-term heat accumulation, and further ensuring the long-term effectiveness of various functions such as heat dissipation of the abutting strip 212 to the structural member 13, and ensuring the more stable and reliable operation of the entire device.

[0057] It should be noted that during the operation of the two driving motors 34, they run at the same speed in the opposite direction, so that the two abutting strips 212 can rotate in the opposite direction at the same speed inside the housing cavity 10.

[0058] Combined with Figure 3 、Figure 4 and Figure 7 As shown, since the middle page plate 222 is inserted inside the abutting strip 212, when the abutting strip 212 moves inside the housing cavity 10, the movement of the abutting strip 212 will be transmitted to the middle page plate 222, thereby driving the middle page plate 222 to also move inside the housing cavity 10. The change in the position of the middle page plate 222 will cause the air flow inside the housing cavity 10, promoting the mixing of the air with uneven temperature distribution inside the housing cavity 10. The air in the hotter area and the air in the colder area exchange with each other, and the heat is also transmitted and diffused accordingly. In this way, the temperature difference inside the housing cavity 10 gradually decreases, achieving temperature balance and avoiding damage to the structural member 13 and other components caused by local overheating.

[0059] As Figure 1 and Figure 2 , heat dissipation holes are provided on the surface of the outer housing 11. During the use of the unit body 1, if dust and impurities enter the structural member 13, it will increase the friction between components, exacerbate component wear, and generate additional vibration and noise. The middle page plate 222 is located between the heat dissipation holes and the structural member 13. When the air with dust and impurities enters from the heat dissipation holes, the middle page plate 222 will change the direction and path of the air flow, making it difficult for the dust and impurities to directly reach the structural member 13 under the dual action of inertia and air flow change, thereby reducing the entry of dust and impurities and effectively reducing the noise caused by these dust and impurities.

[0060] In addition, during the driving and operating process of the entire set of equipment, operating in accordance with the assembly standards and process requirements, the connections between components are tight and accurate, and they cooperate with each other during operation, without generating additional noise due to improper assembly.

[0061] Both of the two driving motors 34 are located outside the outer housing 11, which can reduce the heat pressure inside the housing cavity 10.

[0062] Since during the operation of the equipment, the folding support rod 211 needs to move within a specific trajectory and range to ensure that the abutting strip 212 can effectively fit and dissipate heat from the structural member 13, therefore, a plurality of limiting rods 4 are fixedly installed at the bottom of the inner cavity of the housing cavity 10, and the plurality of limiting rods 4 are used to limit the rotation position of the folding support rod 211.

[0063] The improvement lies in: Refer to Figure 3 and combine with Figure 4As shown in the figure, through multiple limiting rods 4, the sliding position of the folding support rod 211 can be restricted. If the folding support rod 211 is not restricted during the sliding process, it will shift within the housing cavity 10, resulting in collisions with other components and causing equipment failures. The limiting rods 4 can accurately define the sliding range of the folding support rod 211, enabling it to slide within the specified path, making the equipment operate more smoothly, and reducing abnormal vibrations and noises caused by out-of-control component positions. Soft materials are laid on the surfaces of the multiple limiting rods 4 to reduce the noises generated during collisions.

[0064] Since, during the process of the abutting strip 212 fitting against the structural member 13, the corner parts in contact with the surface of the structural member 13 will bear relatively large frictional forces. Prolonged friction will not only cause wear of the abutting strip 212 but may also affect the fitting effect between the abutting strip 212 and the structural member 13, and further affect the heat absorption effect on the structural member 13. Therefore, mounting grooves 51 are provided at two of the four corners of the two abutting strips 212, and the mounting grooves 51 are located on the side of the abutting strip 212 close to the structural member 13. Wear-resistant pads 5 are installed inside all four mounting grooves 51.

[0065] Sliding bends 214 are provided on the surfaces of all four wear-resistant pads 5.

[0066] The improvement lies in: combining Figure 5 and Figure 8 , mounting grooves 51 are provided at the two corners on the side of the two abutting strips 212 close to the structural member 13, and wear-resistant pads 5 (preferably made of rubber material) are installed. Only wearing-resistant pads 5 are provided at the corners, which can ensure that the heat absorption effect of the abutting strip 212 is not affected, and at the same time effectively reduce the frictional force when contacting the structural member 13. The sliding bends 214 provided on the surfaces of the four wear-resistant pads 5 further optimize the mechanical properties during contact. When the abutting strip 212 and the structural member 13 move relative to each other, the sliding bends 214 can skillfully guide the movement path of the contact point, reducing unnecessary resistance between the two, making the movement of the abutting strip 212 smoother.

[0067] Both of the two middle page plates 222 are made of sound-absorbing materials. Specifically, melamine foam materials can be selected for preparation. This material property enables it to play an important role during the operation of the equipment. It has a sound-absorbing function, can effectively absorb the noises generated during the operation of the equipment, reduce noise transmission, and create a relatively quiet environment. It also has the characteristics of air permeability and heat dissipation, which can make the air circulation in the housing cavity 10 more smooth, facilitating the dissipation of the heat generated by the operation of the structural member 13 and preventing heat accumulation from affecting the equipment performance. The elastic property of the material endows the middle page plate 222 with the ability to change its own shape. When driven by the abutting strip 212, it can better adapt to the complex spatial structure and air flow changes in the housing cavity 10, enhance the temperature balance effect in the housing cavity 10, and at the same time, when contacting other components, it can also play a buffering role to protect the components from damage.

[0068] It should be noted that the melamine foam material has a unique porous structure. When the noise generated during the operation of the device enters the middle plate 222, the sound waves are continuously reflected and refracted in these pores, and the energy of the sound waves is gradually consumed during this process. Part of the energy is absorbed by the material in the form of heat. Since the heat generated during the sound absorption process is less, and it has the characteristics of air permeability and heat dissipation itself, it can ensure smooth air circulation in the housing cavity 10, so that the heat generated by the operation of the structural member 13 can be dissipated normally, and it will not affect the internal heat dissipation of the device due to the small amount of heat generated by sound absorption. Thus, while effectively absorbing noise and reducing its propagation, it ensures that the device performance is not interfered by heat accumulation.

[0069] In summary, the working principle of this solution is as follows: First, when the two drive motors 34 start to operate, they will drive the sliding disk 33 connected to them to rotate, and the rotation of the sliding disk 33 will cause the folding support rod 211 connected to it to rotate inside the housing cavity 10. In the specific operation process, when the drive motor 34 is turned on, the folding support rod 211 will drive the abutting strip 212 to rotate together. When the abutting strip 212 rotates to a certain extent, it will fit with the surface of the structural member 13. During this process, the abutting strip 212 can fit and assist in absorbing the heat generated on the surface of the structural member 13.

[0070] After completing one operation, the drive motor 34 will run in the reverse direction. At this time, it will drive the abutting strip 212 and the folding support rod 211 to rotate in the reverse direction. Under the continuous and alternating forward and reverse operation of the drive motor 34, the two abutting strips 212 on both sides will repeatedly fit the surface of the structural member 13 in an intermittent manner, which can effectively reduce the accumulation of heat on the surface of the structural member 13, keep the structural member 13 in a good working state all the time, extend the service life of the structural member 13, and ensure the stable operation of the entire device. By adopting the intermittent fitting method, during the gap period of fitting, the structural member 13 has the opportunity to restore part of the stress balance.

[0071] Since the middle plate 222 is inserted inside the abutting strip 212, when the abutting strip 212 moves inside the housing cavity 10, the movement of the abutting strip 212 will be transmitted to the middle plate 222, thereby driving the middle plate 222 to also move inside the housing cavity 10. The change in the position of the middle plate 222 will cause the air flow in the housing cavity 10, promoting the mixing of the air with uneven temperature distribution in the housing cavity 10. The air in the hotter area exchanges with the air in the colder area, and the heat is also transmitted and diffused accordingly. In this way, the temperature difference inside the housing cavity 10 gradually decreases, achieving temperature equilibrium and avoiding damage to the structural member 13 and other components caused by local overheating.

[0072] Embodiment 2, different from the above Embodiment 1, in the design of the driving structure of the device, two driving motors 34 on the same side can be replaced by a single double-axis motor. Specifically, whether it is the original driving motor 34 or the double-axis motor used for replacement, a silent motor in the prior art such as a silent fan motor is selected. Since the device only needs to change the position of the middle page plate 222 during operation and does not require strong power, the silent motor is sufficient to meet the requirements and can effectively ensure that the noise generated during the operation of the device is maintained at an extremely low level.

[0073] Among them, Figure 9 The dotted arrow indicates the noise absorption and reflection direction.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A low-noise hydrogen-ammonia internal combustion engine generator set, comprising a unit body (1), characterized in that: The unit body (1) includes an outer casing (11). An inner cavity (10) is formed inside the outer casing (11). A structural member (13) is installed inside the inner cavity (10). An outer mounting sleeve (12) is sleeved on the surface of the outer casing (11). Two side support assemblies (2) are arranged inside the inner cavity (10). The two side support assemblies (2) are symmetrically arranged on both sides of the structural member (13). Each side support assembly (2) includes a support mechanism (21) and a sound insulation component (22). One end of the support mechanism (21) away from the structural member (13) is connected to a driving mechanism (3). The driving mechanism (3) includes a sliding disk (33) and a driving motor (34). The support mechanism (21) includes two folding support rods (211). A pressing strip (212) is installed at the top of each of them. Plugging holes (215) are formed inside the two pressing strips (212). The sound insulation component (22) includes two middle page plates (222). The two middle page plates (222) are sleeved inside the pressing strip (212) through the plugging holes (215). During the overall operation of the unit body (1), the driving motor (34) drives the folding support rods (211) to rotate periodically through the sliding disk (33), so that the pressing strip (212) intermittently abuts against the surface of the structural member (13). The two pressing strips (212) cooperate with each other to fit and absorb heat from both sides of the structural member (13). At the same time, the two pressing strips (212) drive the middle page plates (222) to change the spatial state to achieve multi-dimensional noise absorption.

2. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 1, wherein: The two folding support rods (211) are symmetrically arranged. The pressing strip (212) is installed at the top of the end of the folding support rod (211) close to the structural member (13).

3. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 2, characterized in that: The sound insulation component (22) further includes three connecting rods (221). A fixing rod (223) is fixedly installed at the top of each of the three connecting rods (221). One end of the three fixing rods (223) away from the connecting rods (221) is connected to the bottom of the inner cavity of the inner cavity (10). The two middle page plates (222) are located between the three connecting rods (221).

4. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 2, wherein: The driving mechanism (3) includes a sleeve ring rod (31) installed on the surface of the outer casing (11). An activity hole (32) is formed on the surface of the outer casing (11). The two sliding disks (33) are rotatably arranged inside the activity hole (32). The two sliding disks (33) are stacked. The bottom ends of the two folding support rods (211) are respectively connected to the surface of one end of the two sliding disks (33) close to the structural member (13). There are two driving motors (34). The rotating shafts of the two sliding disks (33) are respectively fixedly connected to the output shafts of the two driving motors (34). The two driving motors (34) are both installed on the surface of the sleeve ring rod (31).

5. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 2, characterized in that: A plurality of heat transfer fins (213) are fixedly installed on the surface of one end of the two pressing strips (212) away from the structural member (13). The two pressing strips (212) and the plurality of heat transfer fins (213) are all made of heat-absorbing materials.

6. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 4, wherein: Both of the two driving motors (34) are located outside the outer machine case (11), which can reduce the heat pressure inside the shell cavity (10).

7. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 2, characterized in that: A plurality of limiting rods (4) are fixedly installed at the bottom of the inner cavity of the shell cavity (10), and the plurality of limiting rods (4) are used to limit the rotation position of the folding support rod (211).

8. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 2, wherein: Two of the four corners of the two abutting strips (212) are provided with installation grooves (51), and the installation grooves (51) are located on the side of the abutting strips (212) close to the structural member (13). Wear-resistant pads (5) are installed inside the four installation grooves (51).

9. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 8, characterized in that: Sliding corners (214) are formed on the surfaces of the four wear-resistant pads (5).

10. The low-noise hydrogen-ammonia internal combustion engine generator set according to claim 3, characterized in that: Both of the two middle page plates (222) are made of sound-absorbing materials.

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