A kind of silence switch station
The utility model relates to electro-engineering technical field, particularly a kind of silence switch station.
In general switching point voltage grade be 10KV and more than, exactly the electricity that electrical network comes is given several or more electric substation use, then it step-down is given industry, household electricity by electric substation again, or power plant is for high voltage power transmission.
Muffler is a kind of device stoping sound transmission and allow air-flow to pass through, and is the important measures eliminating air power noise.The device of the reduction noise on the gas channel that muffler is mounted in air powered equipment (equipment as larger in exhaust outlet noises such as air blast, air compressor machine, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system.
Existing switching point voltage has 10KV or 35KV, and in this switchyard cabinet, be provided with network structure very excessively, in the use procedure of switchyard or switch cubicle, netted meeting sends the sound, and due to can heat be produced in cabinet, generally all ventilating fan is installed in cabinet, operationally can there is noise in ventilating fan, motor is operationally because vibrations also can produce noise, especially ventilating fan and motor are along with the prolongation of service time, there will be reduced lifetime, parts such as to loosen at the multiple noise caused, general switchyard does not all install silencing means, make noise excessive, no matter be put in workshop or open air, capital causes the sense of hearing to affect on operative employee or resident.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide a kind of silence switch station, effectively solves traditional switchyard ventilating fan and motor produces noise when Long-Time Service, brings the problems such as sense of hearing impact.
Its technical scheme solved is, comprise the switchyard sidewall being provided with ventilating fan, the silencing means of type that ventilating fan is connected with " Z ", silencing cotton is provided with in the middle of the outer wall layer of silencing means and inner wall layer, the inwall of silencing means is equipped with acoustical panel, two corners of silencing means inside are equipped with hush pipe, the centre of hush pipe is provided with water bag, silencing means inside is set to A level silencing cavity by two hush pipes, B level silencing cavity, C level silencing cavity, multiple vertical first damping sheet is provided with in A level silencing cavity, B level silencing cavity is provided with multiple transverse direction second damping sheet, multiple vertical 3rd damping sheet is provided with in C level silencing cavity, the volume of A level silencing cavity is greater than the volume of B level silencing cavity, the volume of B level silencing cavity is greater than the volume of C level silencing cavity, two corners of silencing means are that cambered surface connects, the right-hand member of silencing means is provided with opening.
The utility model structure is ingenious, and input cost is low, simple to operate, reduces noise when ventilating fan and motor use and shake, makes shopwork become quieter, decrease large decibel noise to the injury of human body.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Provided by Fig. 1, the utility model comprises the switchyard sidewall 2 being provided with ventilating fan 1, ventilating fan 1 is connected with the silencing means of " Z " type, silencing cotton 3 is provided with in the middle of the outer wall layer of silencing means and inner wall layer, the inwall of silencing means is equipped with acoustical panel 4, two corners of silencing means inside are equipped with hush pipe 5, the centre of hush pipe 5 is provided with water bag 6, silencing means inside is set to A level silencing cavity 7 by two hush pipes 5, B level silencing cavity 8, C level silencing cavity 9, multiple vertical first damping sheet 10 is provided with in A level silencing cavity 7, B level silencing cavity 8 is provided with multiple transverse direction second damping sheet 11, multiple vertical 3rd damping sheet 12 is provided with in C level silencing cavity 9, the volume of A level silencing cavity 7 is greater than the volume of B level silencing cavity 8, the volume of B level silencing cavity 8 is greater than the volume of C level silencing cavity 9, two corners 13 of silencing means connect in cambered surface, the right-hand member of silencing means is provided with opening 14.
The first described damping sheet 10, second damping sheet 11, the 3rd damping sheet 12 do not connect the inwall on opposite, and all have two, upper and lower each one.
Described acoustical panel 4 is provided with multiple bloop 15.
Described opening 14 is provided with filter mantle 16.
When the utility model uses, ventilating fan 1 and motor are operationally, the noise occurred enters in silencing means, owing to being provided with silencing cotton 3 between the outer wall of silencing means own and inwall, inwall is provided with acoustical panel 4 and bloop 15, the decibel of noise can be reduced, but when noise decibel is excessive, simple silencing means can not noise removal, now noise can be passed through A level silencing cavity 7, noise is in process, first damping sheet 10 of lower setting, abate the noise further, then the hush pipe 5 passed through with water bag 6 can noise reduction further, then B level silencing cavity 8 and C level silencing cavity 9 successively noise reduction is entered into successively, the decibel of noise can be reduced widely, noise is reduced to minimum decibel.Silencing means corner 13 connects the volume that can increase silencing cavity in cambered surface, make erasure effect better, filter mantle can prevent foreign material from entering in silencing means.
The vibration energy that the utility model absorbs sound by the warm and sunny soft porous material of silencing cotton 3 reduces noise, the principle very large by acoustical panel 4 density blocks noise transmission, and then reduction noise, noise is when the water bag 6 on hush pipe, reduce the vibrations of sound, reduce the decibel of noise, noise through the damping sheet that symmetrical direction is contrary, makes erasure effect better in transport process.
The utility model by multiple noise-reducing structure and multiple silencing cavity successively effective to noise noise reduction, most of sound is all absorbed in silencing means, there is no noise-reducing structure or be only provided with simple acoustical panel compared to traditional, the better effects if of the utility model sound-deadening and noise-reducing.
The utility model structure is ingenious, and input cost is low, simple to operate, improves the ventilation effect of switch cubicle, ensure that in switch cubicle and remains suitable temperature, guarantees that switch cubicle can not breaking out of fire and danger because temperature is too high.