CN204680507U - The noise reduction mounting structure of dry-type transformer - Google Patents
The noise reduction mounting structure of dry-type transformer Download PDFInfo
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- CN204680507U CN204680507U CN201520047362.6U CN201520047362U CN204680507U CN 204680507 U CN204680507 U CN 204680507U CN 201520047362 U CN201520047362 U CN 201520047362U CN 204680507 U CN204680507 U CN 204680507U
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- 238000013016 damping Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000006096 absorbing agent Substances 0.000 abstract description 25
- 230000035939 shock Effects 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
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Abstract
干式变压器的降噪安装结构，它主要包括一安装在地面上、与低压柜通过母排连接的干式变压器，所述干式变压器的下部通过至少安装四个减振器与地面上设置的混凝土地基连接、从而固定安装在地面上；所述干式变压器的绕组与低压柜的母排连接为软连接；所述的干式变压器的下部安装有六个减振器并均布在地面的地基上，且所述减振器在安装后的各支撑点位于同一水平面高度；所述干式变压器通过支撑架安装在用槽钢构成的减振梁上；所述的减振梁下固定安装有所述的减振器；它具有结构简单，使用安装方便，能取得较好减振降噪效果，改善人们居住环境等特点。
The noise reduction installation structure of the dry-type transformer mainly includes a dry-type transformer installed on the ground and connected to the low-voltage cabinet through the busbar. The lower part of the dry-type transformer is connected to the ground by installing at least four The concrete foundation is connected so as to be fixedly installed on the ground; the winding of the dry-type transformer is connected to the busbar of the low-voltage cabinet as a soft connection; the lower part of the dry-type transformer is equipped with six shock absorbers and is evenly distributed on the ground on the foundation, and the support points of the shock absorber after installation are located at the same level; the dry-type transformer is installed on the vibration-damping beam made of channel steel through the support frame; the vibration-damping beam is fixedly installed There is the shock absorber; it has the characteristics of simple structure, convenient use and installation, better effect of vibration and noise reduction, and improvement of people's living environment.
Description
技术领域 technical field
本实用新型涉及的是一种干式变压器的降噪安装结构，属于变压器的安装技术领域。 The utility model relates to a noise-reducing installation structure of a dry-type transformer, which belongs to the technical field of transformer installation.
背景技术 Background technique
电力干式变压器是一种安全、节能、环保的新型变压器，主要用于高层住宅小区、写字楼、医院、酒店等高档场所。随着我国城市化的不断推进，干式变压器也随之得到了广泛的应用，干式变压器应用数量和运行年限的不断增加，陆续不断的有干式变压器振动噪音扰民情况产生。随着人们对生活环境要求的提高，变压器噪音的存在严重影响社会的和谐。 Power dry-type transformer is a new type of transformer that is safe, energy-saving and environmentally friendly. It is mainly used in high-rise residential quarters, office buildings, hospitals, hotels and other high-end places. With the continuous advancement of urbanization in our country, dry-type transformers have also been widely used. The number of dry-type transformers used and the number of years of operation continue to increase, and the vibration and noise of dry-type transformers continue to disturb the people. With the improvement of people's requirements for living environment, the existence of transformer noise seriously affects the harmony of society.
经研究干式变压器的电磁噪声属于机械性噪声，它是交变磁场对铁芯及线圈产生周期性交变作用力引起的振动产生的，振动的铁芯（矽钢板）线圈向外辐射噪声，其主频取决于交流电频率，但是由于通电干式变压器内，导线、铁芯内部的涡流作用下，其辐射出来的噪声远比单一频率震动产生的噪声复杂得多。 After research, the electromagnetic noise of dry-type transformers belongs to mechanical noise. It is generated by the vibration caused by the periodic alternating force of the alternating magnetic field on the iron core and coil. The vibrating iron core (silicon steel plate) coil radiates noise outward. The main frequency depends on the AC frequency, but due to the eddy current inside the wire and iron core in the energized dry-type transformer, the radiated noise is much more complicated than the noise generated by a single frequency vibration.
通常噪声的传播途径分为两类：一是噪声通过空气的传播扩散，在干式变压器传播扩散过程中不断衰减，能量密度不断降低。二是噪声通过固体的传播扩散，在梁柱及楼板结构中传播扩散，能量密度也有所降低，但降低不大。 Usually, the noise propagation paths are divided into two categories: one is the noise propagation and diffusion through the air, which is continuously attenuated during the propagation and diffusion process of the dry-type transformer, and the energy density is continuously reduced. The second is that the noise propagates and diffuses through solids, and spreads and diffuses in the beam-column and floor structures, and the energy density is also reduced, but not much.
发明内容 Contents of the invention
本实用新型的目的在于克服现有技术存在的不足，而提供一种结构简单，使用安装方便，能取得较好减振降噪效果，改善人们居住环境的干式变压器的降噪安装结构。 The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a noise-reducing installation structure of a dry-type transformer that is simple in structure, convenient to use and install, can achieve better vibration and noise reduction effects, and improve people's living environment.
本实用新型的目的是通过如下技术方案来完成的，所述的一种干式变压器的降噪安装结构，它主要包括一安装在地面上、与低压柜通过母排连接的干式变压器，所述干式变压器的下部通过至少安装四个减振器与地面上设置的混凝土地基连接、从而固定安装在地面上；所述干式变压器的绕组与低压柜的母排连接为软连接。 The purpose of this utility model is achieved through the following technical solutions. The noise-reducing installation structure of a dry-type transformer mainly includes a dry-type transformer installed on the ground and connected to the low-voltage cabinet through a busbar. The lower part of the dry-type transformer is connected to the concrete foundation provided on the ground by installing at least four shock absorbers, so as to be fixedly installed on the ground; the winding of the dry-type transformer is connected to the busbar of the low-voltage cabinet as a soft connection.
所述的干式变压器的下部安装有六个减振器并均布在地面的地基上，且所述减振器在安装后的各支撑点位于同一水平面高度；所述干式变压器通过支撑架安装在用槽钢构成的减振梁上；所述的减振梁下固定安装有所述的减振器。 The lower part of the dry-type transformer is equipped with six shock absorbers, which are evenly distributed on the foundation of the ground, and the support points of the shock absorbers after installation are located at the same level; It is installed on a vibration-damping beam made of channel steel; the vibration-absorber is fixedly installed under the vibration-damping beam.
所述的减振梁包括上层减振梁和下层减振梁，且构成上层减振梁的槽钢和构成下层减振梁的槽钢相互垂直交错连接；所述干式变压器通过支撑架安装在上层减振梁上，所述减振器固定安装在下层减振梁上。 The vibration-damping beam includes an upper-layer vibration-damping beam and a lower-layer vibration-damping beam, and the channel steel forming the upper layer vibration-damping beam and the channel steel forming the lower layer vibration-damping beam are vertically interlaced with each other; the dry-type transformer is installed on the On the upper shock absorbing beam, the shock absorber is fixedly installed on the lower shock absorbing beam.
所述减振器的顶部通过第一橡胶垫顶在下层减振梁的槽钢下端面上，所述减振器的底部穿过第二橡胶垫与第三橡胶垫接触，在其中间夹置有一基础钢板；所述上层减振梁的槽钢上横向开设有减重孔。 The top of the shock absorber rests on the lower end surface of the channel steel of the lower damping beam through the first rubber pad, and the bottom of the shock absorber passes through the second rubber pad and contacts the third rubber pad, and is sandwiched between them. There is a base steel plate; the channel steel of the upper shock-absorbing beam is provided with lightening holes transversely.
本实用新型属于对现有技术的改良，它具有结构简单，使用安装方便，能取得较好减振降噪效果，改善人们居住环境等特点。 The utility model belongs to the improvement of the prior art, and has the characteristics of simple structure, convenient use and installation, better effect of damping vibration and noise, improving people's living environment and the like.
附图说明 Description of drawings
图1是本实用新型所述降噪安装结构示意图。 Fig. 1 is a schematic diagram of the noise reduction installation structure of the utility model.
图2是本实用新型所述干式变压器安装结构示意图。 Fig. 2 is a schematic diagram of the installation structure of the dry-type transformer described in the present invention.
具体实施方式 Detailed ways
下面将结合附图对本实用新型作详细的介绍：图1、2所示，本实用新型所述的一种干式变压器的降噪安装结构，它主要包括一安装在地面上、与低压柜通过母排连接的干式变压器9，所述干式变压器9的下部通过至少安装四个减振器3与地面上设置的混凝土地基连接、从而固定安装在地面上；所述干式变压器9的绕组与低压柜的母排连接为软连接。 The utility model will be described in detail below in conjunction with the accompanying drawings: As shown in Figures 1 and 2, a noise-reducing installation structure for a dry-type transformer described in the utility model mainly includes a device installed on the ground and passing through the low-voltage cabinet. A dry-type transformer 9 connected to the busbar, the lower part of the dry-type transformer 9 is fixedly installed on the ground by installing at least four shock absorbers 3 and the concrete foundation provided on the ground; the winding of the dry-type transformer 9 The busbar connection with the low-voltage cabinet is a soft connection.
图中所示，所述的干式变压器9的下部安装有六个减振器3并均布在地面的地基上，且所述减振器3在安装后的各支撑点位于同一水平面高度；所述干式变压器9通过支撑架安装在用槽钢构成的减振梁上；所述的减振梁下固定安装有所述的减振器3。 As shown in the figure, six shock absorbers 3 are installed on the lower part of the dry-type transformer 9 and are evenly distributed on the foundation of the ground, and the support points of the shock absorbers 3 after installation are located at the same level; The dry-type transformer 9 is installed on a vibration damping beam made of channel steel through a support frame; the vibration absorber 3 is fixedly installed under the vibration damping beam.
本实用新型进一步的实施例是：所述的减振梁包括上层减振梁1和下层减振梁2，且构成上层减振梁1的槽钢和构成下层减振梁2的槽钢相互垂直交错连接；所述干式变压器9通过支撑架安装在上层减振梁1上，所述减振器3固定安装在下层减振梁2上。 A further embodiment of the utility model is: the damping beam includes an upper damping beam 1 and a lower damping beam 2, and the channel steel forming the upper damping beam 1 and the channel steel forming the lower damping beam 2 are perpendicular to each other Interleaved connection; the dry-type transformer 9 is installed on the upper vibration-damping beam 1 through a support frame, and the vibration-absorber 3 is fixedly installed on the lower-layer vibration-damping beam 2 .
图2中所示，所述减振器3的顶部通过第一橡胶垫4顶在下层减振梁2的槽钢下端面上，所述减振器3的底部穿过第二橡胶垫5与第三橡胶垫6接触，在其中间夹置有一基础钢板7；所述上层减振梁1的槽钢上横向开设有减重孔8。 As shown in Fig. 2, the top of the shock absorber 3 passes through the first rubber pad 4 on the lower end surface of the channel steel of the lower damping beam 2, and the bottom of the shock absorber 3 passes through the second rubber pad 5 and The third rubber pad 6 is in contact with a base steel plate 7 interposed therebetween; the channel steel of the upper damping beam 1 is provided with a weight reducing hole 8 transversely.
实施例： Example:
本实用新型主要是在干式变压器下部加装隔振器，所述的干式变压器可选为特变电工变压器有限公司生产的型号为SCBH15-1250/10，重量4070KG，考虑到变压器母排重量，整体重量为4200KG左右。该干式变压器的激振频率约为100赫兹。据此选择LA-1250型号的减振器，LA-1250减振器的最佳载荷为700KG荷载范围为（500-1100）KG，最佳荷载下固有频率为3.7赫兹；减振装置中减振器共选用6台。 The utility model is mainly to install a vibration isolator at the lower part of the dry-type transformer. The dry-type transformer can be selected as SCBH15-1250/10 produced by TBEA Transformer Co., Ltd., with a weight of 4070KG. Considering the weight of the transformer busbar , the overall weight is about 4200KG. The excitation frequency of the dry-type transformer is about 100 Hz. According to this, the LA-1250 type shock absorber is selected. The optimal load of the LA-1250 shock absorber is 700KG. The load range is (500-1100) KG, and the natural frequency under the optimal load is 3.7 Hz; A total of 6 devices were selected.
干式变压器与地面的振动隔绝方式采用将干式变压器整体置于减振装置上，使其彻底与地面隔绝。 The vibration isolation method between the dry-type transformer and the ground adopts the method of placing the dry-type transformer on the vibration damping device as a whole, so that it is completely isolated from the ground.
干式变压器本身前后左右基本对称，但是变压器与低压柜连接的母排导致变压器前后不对称，左右对称。变压器下设有槽钢与基础连接，槽钢方向和绕组排列方向垂直。用千斤顶将变压器带保护外壳整体垫高。 The dry-type transformer itself is basically symmetrical in front, back, left, and right, but the busbar connected to the transformer and the low-voltage cabinet causes the transformer to be asymmetrical in front and back, and symmetrical in left and right. There is a channel steel connected to the foundation under the transformer, and the direction of the channel steel is perpendicular to the direction of winding arrangement. Use a jack to raise the transformer with protective casing as a whole.
另外减振器现场安装时因注意一下几点： In addition, when installing the shock absorber on site, pay attention to the following points:
（1）每个减振器的承重均等，由于变压器前后重量分布不均匀，故要找准变压器重心位置，保证各单元减振器压缩量基本相同。 (1) The load-bearing of each shock absorber is equal. Since the weight distribution before and after the transformer is uneven, it is necessary to find out the center of gravity of the transformer to ensure that the compression of the shock absorbers of each unit is basically the same.
（2）保证整体结构的稳定性，采用槽钢将各减振器连接成小单元，可增加稳定性。 (2) To ensure the stability of the overall structure, channel steel is used to connect the shock absorbers into small units, which can increase the stability.
（3）安装减振器的基础必须平整，要求减振器在安装后各支撑点位于同一水平面高度。 (3) The foundation for installing the shock absorber must be flat, and the support points of the shock absorber are required to be at the same level after installation.
（4）现场配电室内施工无法使用起吊机，只可使用千斤顶，变压器抬起来高度有限，原槽钢不用拆除，并且停电时间不宜过长。 (4) The construction in the on-site power distribution room cannot use a hoist, only a jack can be used. The height of the transformer is limited, the original channel steel does not need to be removed, and the power outage time should not be too long.
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| CN104599815A (en) * | 2015-01-23 | 2015-05-06 | 国网浙江省电力公司嘉兴供电公司 | Noise-reducing installation structure for dry-type transformer |
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| CN104599815A (en) * | 2015-01-23 | 2015-05-06 | 国网浙江省电力公司嘉兴供电公司 | Noise-reducing installation structure for dry-type transformer |
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