CN106532493B - A kind of vibration shock isolation for power equipment hits device - Google Patents

Abstract

The present invention relates to a kind of vibration shock isolations for power equipment to hit device,Including peripheral denoising structure (1),Bottom vibration and noise reducing structure (2) and buffer structure,It is characterized in that,The peripheral denoising structure (1) includes the enclosing cover (11) surrounded by sound-absorbing partition,The air intake assembly (12) being arranged on front side of enclosing cover (11) and noise reduction gate (13) and setting enclosing cover (11) top surface multiple air draft components (14),The bottom vibration and noise reducing structure (2) includes cylinder body (21),Guide rod (22),Pedestal (23),Spring (24),Shear buffer bar (25),Cushion collar (26),Flexural pivot (27) and ball hinge (28),The buffer structure includes mounting screw (41),Separator tube (42) and separator tube mounting base (43).The vibration shock isolation of the present invention hits that apparatus structure is simple, convenient for installation and maintenance, ventilation and heat is good, is not only able to effectively reduce power equipment noise pollution, also with shock resistance effect of taking precautions against natural calamities centainly.

Description

A vibration damping and anti-shock device for electric equipment

technical field

The invention belongs to the technical field of vibration reduction and noise reduction, in particular to a vibration reduction and anti-shock device for electric equipment.

Background technique

Distribution substations and substations are important power places. Due to the continuous expansion of cities and the needs of urban grid transformation, some distribution substations and substations must be built in commercial and residential areas. With the enhancement of people's awareness of environmental protection, the noise problems of high and low voltage cabinets, switch cabinets, power equipment, etc. have been highly valued by the power sector and power equipment manufacturers. Also, damage to power equipment caused by external natural disasters often occurs. For example, the impact damage to power equipment caused by earthquakes is also hoped to be effectively prevented while reducing noise.

Although the noise generated by most electrical equipment is not high-decibel noise, the low-frequency noise generated in most cases will cause chronic damage to the human body, easily make people irritable, irritable, and sometimes even lose their minds, and suffer from long-term harassment. Otherwise, it may also cause nervous system diseases such as neurasthenia and insomnia. The noise of power equipment is mainly generated by the vibration of the iron core coupled to the shell of the power equipment, which makes the shell of the power equipment vibrate. The generated vibration radiates from the air around the power equipment and the ground at the bottom of the power equipment to the surroundings, thereby affecting the residents living around. General vibration and noise reduction facilities have a little impact resistance such as earthquakes, but they are not completely able to prevent damage from disaster impacts, especially damage from earthquake longitudinal waves.

In the prior art, the power equipment is all arranged in the box for isolating the power equipment from the outside world, and the power equipment is installed in the box during installation, but in the prior art, the power equipment is directly arranged in the box, due to the structure of the box Simple, therefore, the box body cannot absorb the noise generated when the power equipment is running, and the noise generated when the power equipment is running is loud, which interferes with people's normal rest. In the prior art, there is also a method of filling polyurethane foam between the electrical equipment box and the electrical equipment, in an attempt to reduce the external radiation of high-frequency noise from the electrical equipment. However, due to the low density of the filled polyurethane foam and the looseness of the filled polyurethane foam, the polyurethane foam did not adhere to the electrical equipment, and did not play a good role in reducing high-frequency noise. And this lightweight foam plastic is completely unable to prevent the impact of seismic longitudinal waves.

Contents of the invention

The object of the present invention is to provide a vibration-reducing and anti-shock device for electric equipment, which has a simple structure, convenient installation and maintenance, good ventilation and heat dissipation, can not only effectively reduce the noise pollution of electric equipment, but also has a certain effect of disaster prevention and anti-shock .

The specific technical solution of the present invention is a vibration-reducing and anti-shock device for electric equipment, including a peripheral noise-reducing structure, a bottom-side vibration-reducing and noise-reducing structure, and a buffer structure, characterized in that,

The peripheral noise reduction structure includes a closed enclosure surrounded by sound-absorbing partitions, an air inlet assembly and a noise reduction door arranged on the front side of the enclosed enclosure, and a plurality of exhaust assemblies arranged on the top surface of the enclosed enclosure, The sound-absorbing partition is a composite structure plate, which includes perforated galvanized steel plate, glass wool layer, damping sound insulation felt and galvanized steel plate from the inside to the outside. The closed cover covers the electric equipment inside.

The bottom vibration and noise reduction structure includes a cylinder body, a guide rod, a base, a spring, a shear buffer rod, a buffer sleeve, a ball joint and a ball joint seat. The base is fixedly installed on the ground foundation, and the ball joint The seat is fixedly installed on the upper surface of the base, the lower end of the shear buffer rod is installed on the ball joint seat through a ball joint, the guide rod is a tubular structure with a ring-shaped flange at the upper end, and the guide rod is sleeved on the shear force On the buffer rod, the ball joint and the ball joint seat, the lower end of the guide rod is pressed on the base, and there is a buffer sleeve between the shear buffer rod and the inner wall of the guide rod. The cylinder body is a cylindrical structure with a closed upper end. There is a ring-shaped boss on the inner surface of the lower end of the body, and the upper end of the guide rod extends into the cylindrical structure of the cylinder body. The spring is sleeved on the upper part of the shear buffer rod, and the spring is located on the lower surface of the closed end of the upper end of the cylinder body and the upper end of the guide rod. Between the upper surface of the flange, the spring has a pre-compression amount so that the lower surface of the flange at the upper end of the guide rod is pressed against the upper surface of the boss of the cylinder body. The upper end of the cylinder body has a mounting flange, which is installed on the lower surface of the electrical equipment through screws.

The buffer structure includes a mounting screw, a buffer tube and a buffer tube mounting seat. The buffer tube mounting seat is a groove-shaped structure, and there are four buffer tube mounting seats. The four buffer tube mounting seats are respectively installed on the On the four inner walls of the closed cover corresponding to the four sides of the power equipment, there are four buffer tubes made of rubber elastic material, which are tightly squeezed between the buffer tube mounting base and the side of the power equipment.

Furthermore, the air inlet assembly includes an air inlet frame and a sound-absorbing sheet, the air-inlet frame is installed on a mounting hole reserved on the front side of the closed cover, and an independent sound-absorbing sheet is installed in the air inlet frame.

Furthermore, the exhaust assembly includes an axial flow fan, an exhaust muffler and a controller for controlling the axial flow fan. The axial flow fan is installed on the top surface of the closed enclosure and faces inside the enclosed enclosure. The exhaust muffler is arranged at the air outlet outside the axial flow fan, and the controller is installed outside the closed cover to control the start and stop of the axial flow fan.

Furthermore, the buffer sleeve material is natural rubber.

Furthermore, the buffer tube is made of neoprene material.

Furthermore, a sand layer is laid on the concrete ground foundation around the bottom vibration and noise reduction structure.

The beneficial effects of the present invention are: 1) Place the power equipment in a closed enclosure surrounded by sound-absorbing partitions, the composite sound-absorbing partitions can effectively absorb the low-frequency signals generated by the vibration of the power equipment, and prevent the low-frequency signals from passing through the surrounding air Radiate to the outside world; 2) Air intake and exhaust components are installed on the closed cover, the air intake and exhaust components can not only effectively reduce the noise of electrical equipment, but also ensure the ventilation and heat dissipation performance in the closed cover; 3 ) Vibration and noise reduction components are installed at the bottom of the power equipment, the structure is simple, the vibration between the power equipment and the ground can be effectively reduced by using the shock absorber, thereby reducing the noise of the power equipment, and it can also prevent the low frequency signal of the power equipment from the ground to the surrounding Radiation, the vibration and noise reduction components at the bottom can convert horizontal impact into vertical impact, which can effectively reduce the impact of earthquake longitudinal waves; It radiates to the outside world and has good impact resistance.

Description of drawings

Fig. 1 is the structure schematic diagram of the anti-shock device for electric equipment of the present invention;

Fig. 2 is a schematic diagram of the external structure of the vibration-damping and anti-shock device for power equipment of the present invention;

FIG. 3 is a partially enlarged view of FIG. 1 .

In the figure: 1 peripheral noise reduction structure, 11 closed cover body, 12 air intake assembly, 121 air intake frame, 122 independent noise reduction sheet, 13 noise reduction door, 14 exhaust assembly, 141 axial flow fan, 142 exhaust muffler, 143 is the controller, 2 bottom vibration and noise reduction structure, 21 cylinder body, 22 guide rod, 23 base, 24 spring, 25 shear force buffer rod, 26 buffer sleeve, 27 ball joint, 28 ball joint seat, 3 electric equipment, 41 mounting screws, 42 buffer tubes, 43 buffer tube mounts.

Detailed ways

The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1-3, a vibration-damping and anti-shock device for power equipment according to the present invention includes a peripheral noise-reducing structure 1, a bottom vibration-damping and noise-reducing structure 2 and a buffer structure.

The peripheral noise reduction structure 1 includes a closed enclosure 11 surrounded by sound-absorbing partitions, an air intake assembly 12 and a noise reduction door 13 arranged on the front side of the enclosed enclosure 11, and a A plurality of exhaust components 14, the sound-absorbing partition is a composite structural plate, which sequentially includes a perforated galvanized steel plate, a glass wool layer, a damping sound insulation felt, and a galvanized steel plate from the inside to the outside. The device 3 is housed inside it. The air inlet assembly 12 includes an air inlet frame 121 and a sound-absorbing sheet 122. The air-inlet frame 121 is installed on the mounting hole reserved on the front side of the closed cover 11, and an independent sound-absorbing Tablet 122. The exhaust assembly 14 includes an axial flow fan 141, an exhaust muffler 142 and a controller 143 for controlling the axial flow fan 141. The axial flow fan 141 is installed on the top surface of the closed cover 11 and faces the inside of the closed cover. The exhaust muffler 142 is arranged at the air outlet outside the axial flow fan 141 , and the controller 143 is installed outside the closed cover 11 to control the start and stop of the axial flow fan 141 .

The bottom vibration and noise reduction structure 2 includes a cylinder body 21, a guide rod 22, a base 23, a spring 24, a shear force buffer rod 25, a buffer sleeve 26, a ball joint 27 and a ball joint seat 28, and the base 23 is fixedly installed On the ground foundation, the ball hinge seat 28 is fixedly installed on the upper surface of the base 23, the lower end of the shear buffer rod 25 is installed on the ball hinge seat 28 through the ball hinge 27, and the guide rod 22 is the upper end There is a tubular structure with an annular flange, the guide rod 22 is sleeved on the shear buffer rod 25, the ball joint 27 and the ball joint seat 28, the lower end of the guide rod 22 is pressed on the base 23, and the shear buffer rod 25 and the guide There is a buffer sleeve 26 between the inner walls of the rods 22. The cylinder body 21 is a cylindrical structure with a closed upper end. The inner surface of the lower end of the cylinder body 21 has a ring-shaped boss. In the structure, the spring 24 is sleeved on the upper part of the shear buffer rod 25, the spring 24 is located between the lower surface of the closed end of the upper end of the cylinder 21 and the upper surface of the upper flange of the guide rod 22, and the spring 24 has a pre-compression amount to make the guide rod The lower surface of the flange at the upper end of 22 is pressed on the upper surface of the boss of the cylinder body 21, and the upper end of the cylinder body 21 has a mounting flange, which is installed on the lower surface of the electrical equipment 3 by screws. The buffer sleeve 26 is made of natural rubber, which has good creep resistance and can be used for a long time under the action of gravity and pressure.

Described buffer structure comprises installation screw 41, buffer tube 42 and buffer tube mounting base 43, and described buffer tube mounting base 43 is a groove structure, and there are four buffer tube mounting bases 43, four buffering with mounting screw 41 The tube mounts 43 are respectively mounted on the four inner walls of the closed cover 11 corresponding to the four sides of the power equipment. There are four buffer tubes 42 made of rubber elastic material, which are tightly squeezed on the buffer tube mounts respectively. 43 and the side of the electrical equipment. The buffer tube 42 is made of neoprene material. Neoprene rubber has good toughness, which can effectively reduce the sound source vibration of high-frequency radiation noise.

When the bottom vibration and noise reduction structure 2 is selected, each bottom vibration and noise reduction structure 2 bears the same weight, and the front and rear weight distribution of the power equipment 3 is uneven. When installing, the center of gravity of the power equipment 3 must be located to ensure that each bottom is vibration and noise reduction Structure 2 has basically the same amount of compression. In addition, the stability of the overall structure must be ensured, and the bottom vibration and noise reduction structures 2 are connected into small units by channel steel, which can increase the stability. The foundation for installing the bottom vibration-damping and noise-reducing structure 2 must be flat, and it is required that the supporting points of the bottom vibration-damping and noise-reducing structure 2 be located at the same level after installation.

The composite sound-absorbing partition can effectively absorb the low-frequency signals generated by the vibration of the electric equipment 3 and prevent the low-frequency signals from radiating to the outside through the surrounding air. Moreover, the air inlet assembly 12 and the air exhaust assembly 14 are arranged on the closed cover 11. The air intake assembly 12 and the air exhaust assembly 14 can not only effectively reduce the noise of the electric equipment 3, but also ensure the ventilation in the closed cover 11. thermal performance.

In order to further reduce the noise generated when the electric equipment 3 is in operation, a sand layer is laid on the foundation around the bottom vibration and noise reduction structure 2 . After the power equipment 3 passes through the bottom vibration and noise reduction structure 2 to reduce vibration and noise, the noise generated by the operation of the power equipment 3 will be absorbed by the sand layer when it radiates to the surroundings.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (6)

1. a kind of vibration shock isolation for power equipment hits device, including peripheral denoising structure (1), bottom vibration and noise reducing structure (2) and buffer structure, which is characterized in that

The peripheral denoising structure (1) includes the enclosing cover (11) surrounded by sound-absorbing partition, is arranged in enclosing cover (11) The air intake assembly (12) of front side and noise reduction gate (13) and setting enclosing cover (11) top surface multiple air draft components (14), The sound-absorbing partition be composite construction board, from inside to outside successively include perforation galvanized steel plain sheet, mineral wool layer, damping sound insulation felt and Galvanized steel plain sheet, the enclosing cover (11) cover power equipment (3) inside it,

The bottom vibration and noise reducing structure (2) includes cylinder body (21), guide rod (22), pedestal (23), spring (24), shearing buffer bar (25), cushion collar (26), flexural pivot (27) and ball hinge (28), the pedestal (23) is fixedly mounted in ground base, described Ball hinge (28) be fixedly mounted on pedestal (23) upper surface, the lower end of the shearing buffer bar (25) passes through flexural pivot (27) and pacifies In ball hinge (28), the guide rod (22) is the tubular structure that upper end has cricoid flange, and guide rod (22), which is sleeved on, to be cut In power buffer bar (25), flexural pivot (27) and ball hinge (28), the lower end of guide rod (22) is pressed on pedestal (23), in shearing buffer bar (25) it is the tubular structure of upper end closed, cylinder to have cushion collar (26), the cylinder body (21) between the inner wall of guide rod (22) There is body (21) lower end inner surface cricoid boss, guide rod (22) upper end to stretch into the tubular structure of cylinder body (21), the bullet Spring (24) is sleeved on the top of shearing buffer bar (25), and spring (24) is located at cylinder body (21) upper end closed end lower surface and guide rod (22) Between upper end flange upper surface, it is convex that there is spring (24) pre compressed magnitude guide rod (22) upper end flange lower surface to be made to be pressed in cylinder body (21) On platform upper surface, cylinder body (21) upper end has mounting flange, and the lower surface of power equipment (3), the bottom are mounted on by screw Portion's vibration and noise reducing structure (2) has 4, is evenly arranged under power equipment (3),

The buffer structure includes mounting screw (41), separator tube (42) and separator tube mounting base (43), the separator tube Mounting base (43) is bathtub construction, and there are four buffering pipe mounting seats (43), and pipe mounting seat is buffered by four with mounting screw (41) (43) it is separately mounted on four inner walls of the corresponding enclosing cover (11) in four sides of power equipment, the separator tube (42) There are four, it is made, is closely squeezed respectively between buffering pipe mounting seat (43) and power equipment side of rubber elastic material.

2. a kind of vibration shock isolation for power equipment according to claim 1 hits device, which is characterized in that it is described into Wind component (12) includes air inlet frame (121) and anechoic sheet (122), and the air inlet frame (121) is mounted on enclosing cover (11) on the reserved mounting hole in front side, independent anechoic sheet (122) is installed in air inlet frame (121).

3. a kind of vibration shock isolation for power equipment according to claim 1 hits device, which is characterized in that the row Wind component (14) includes the controller (143) of axial flow blower (141), air-discharge silencer (142) and control axial flow blower (141), The axial flow blower (141) is mounted on the top surface of enclosing cover (11) and towards inside enclosing cover, the air-discharge silencer (142) it is arranged at the air outlet on the outside of axial flow blower (141), the controller (143) is mounted on enclosing cover (11) Outside is for controlling axial flow blower (141) start and stop.

4. a kind of vibration shock isolation for power equipment according to claim 1 hits device, which is characterized in that described is slow Punching set (26) material is natural rubber.

5. a kind of vibration shock isolation for power equipment according to claim 1 hits device, which is characterized in that described is slow Washing pipe (42) makes for chloroprene rubber material.

6. hitting device according to a kind of vibration shock isolation for power equipment described in any one of claim 1-5, feature exists It is equipped with sand layer on the basis of mattess around, the bottom vibration and noise reducing structure (2).