Noise reduction mechanism for oil tank of extra-high voltage shunt reactor

Abstract

The utility model belongs to the technical field of paralleling reactors, and relates to an extra-high voltage paralleling reactor oil tank noise reduction mechanism which comprises a reinforcing iron shell, the reinforcing iron shell comprises a closed side plate and an open side which are oppositely arranged, the periphery of one side of the closed side plate is integrally provided with a blocking side plate to form the open side, and a quartz sand layer is arranged on the inner side of the closed side plate. A plurality of long-strip-shaped pressing plates are evenly distributed on the inner side of the quartz sand layer at intervals, the two ends of each long-strip-shaped pressing plate are welded to the left inner wall and the right inner wall of the reinforcing iron shell, sound insulation plates and sound absorption cotton are sequentially arranged on the inner sides of the long-strip-shaped pressing plates, and the open side of the reinforcing iron shell is welded to the outer surface of the oil tank wall. A series of efficient sound absorption and insulation materials such as the sound absorption cotton, the sound insulation plate and the quartz sand layer are ingeniously integrated in the reinforced iron shell, in the operation process of the reactor, the materials can effectively block the resonance conduction path of electromagnetic vibration from the interior of the oil tank to the exterior, and therefore the excellent noise reduction effect is achieved, and the service life of the reactor is prolonged. And low-noise operation of equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shunt reactor technical field, concretely relates to a kind of ultrahigh voltage shunt reactor oil tank noise reduction mechanism. BACKGROUND

[0002] Shunt reactor has multiple important functions in power system, such as compensating capacitive charging power, improving voltage distribution and reducing active loss, etc. As a reactive power compensation device for long transmission line, shunt reactor in EHV transmission line can limit the rise of power frequency voltage in system and reduce operating overvoltage, thereby ensuring stable operation of power system.

[0003] As an important component in power system, the noise and vibration problems generated by ultrahigh voltage reactor during operation are increasingly prominent. Due to the fluctuation of grid voltage and current or unstable frequency, noise and vibration are inevitably generated during the operation of ultrahigh voltage reactor. On the one hand, it increases the failure rate of the equipment and reduces the service life. On the other hand, it also pollutes the environment around the substation. Therefore, under the background of green and low carbon, low noise, low loss and high efficiency reactor will become an important choice for future power system construction.

[0004] In addition to minimizing the generation of reactor noise and vibration, it is also crucial to block the propagation of noise. Currently, the industry often uses the method of adding a soundproof cover outside the reactor equipment to block noise. Although this method is quite effective in reducing noise, it also has many problems. Due to the good sealing performance of the soundproof cover, it affects the heat dissipation of the equipment. In addition, the high installation cost and high requirement for installation space further limit the widespread popularity and application of soundproof cover. More importantly, this method cannot fundamentally solve the problem of large reactor noise and noise propagation. As a protective shell of the reactor, the electromagnetic vibration generated inside the oil tank during the operation of the reactor causes noise propagation through the resonance effect and conduction mechanism of the medium. Therefore, it is necessary to improve the existing ultrahigh voltage reactor oil tank to achieve the effect of blocking the propagation of reactor noise. SUMMARY

[0005] To solve the above technical problems, the utility model provides a kind of ultrahigh voltage shunt reactor oil tank noise reduction mechanism, by installing noise reduction mechanism on the outer wall of oil tank, setting sound insulation material, sound absorbing material and dry quartz sand layer in noise reduction mechanism, it aims at effectively blocking the propagation path of noise, plays the composite noise reduction effect of sound absorption and sound insulation, thereby significantly reducing the noise level of ultrahigh voltage reactor. The technical scheme adopted by the utility model is as follows:

[0006] The oil tank noise reduction mechanism of the extra-high voltage shunt reactor comprises a reinforced iron shell, the reinforced iron shell comprises oppositely arranged closed side plates and an open side, the closed side plates are integrally formed with surrounding side plates on one side to form the open side, quartz sand layers are arranged on the inner sides of the closed side plates, a plurality of long strip pressing plates are uniformly arranged on the inner sides of the quartz sand layers, the long strip pressing plates are welded on the left and right inner walls of the reinforced iron shell at two ends, sound insulation boards and sound absorbing cotton are sequentially arranged on the inner sides of the long strip pressing plates, and the open side of the reinforced iron shell is welded on the outer surface of the oil tank wall.

[0007] Preferably, the circumference of the open side is larger than the circumference of the closed side plate.

[0008] Preferably, the reinforced iron shell is made of low alloy steel plate.

[0009] Preferably, the long strip pressing plate is made of low alloy steel plate.

[0010] The oil tank noise reduction mechanism of the extra-high voltage shunt reactor comprises a reinforced iron shell, the reinforced iron shell comprises oppositely arranged closed side plates and an open side, the closed side plates are integrally formed with surrounding side plates on one side to form the open side, quartz sand layers are arranged on the inner sides of the closed side plates, a plurality of long strip pressing plates are uniformly arranged on the inner sides of the quartz sand layers, the long strip pressing plates are welded on the left and right inner walls of the reinforced iron shell at two ends, sound insulation boards and sound absorbing cotton are sequentially arranged on the inner sides of the long strip pressing plates, and the open side of the reinforced iron shell is welded on the outer surface of the oil tank wall.

[0011] The oil tank noise reduction mechanism of the extra-high voltage shunt reactor comprises a reinforced iron shell, the reinforced iron shell comprises oppositely arranged closed side plates and an open side, the closed side plates are integrally formed with surrounding side plates on one side to form the open side, quartz sand layers are arranged on the inner sides of the closed side plates, a plurality of long strip pressing plates are uniformly arranged on the inner sides of the quartz sand layers, the long strip pressing plates are welded on the left and right inner walls of the reinforced iron shell at two ends, sound insulation boards and sound absorbing cotton are sequentially arranged on the inner sides of the long strip pressing plates, and the open side of the reinforced iron shell is welded on the outer surface of the oil tank wall. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0013] Figure 1 It is the front view of the oil tank noise reduction mechanism of the utility model embodiment;

[0014] Figure 2 It is the horizontal direction sectional view of the oil tank noise reduction mechanism of the utility model embodiment;

[0015] Wherein, 1, oil tank wall, 2, long strip pressing plate, 3, reinforced iron shell, 4, sound absorbing cotton, 5, sound insulation board, 6, quartz sand layer. DETAILED DESCRIPTION

[0016] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments.

[0017] As Figure 1 , 2As shown, the extra-high voltage shunt reactor oil tank noise reduction mechanism comprises a reinforced iron shell 3, the reinforced iron shell 3 comprises a closed side plate which is arranged away from the oil tank wall 1 and parallel to the oil tank wall 1, and a surrounding side plate is integrally formed around the side of the closed side plate close to the oil tank wall 1, the end of the surrounding side plate close to the oil tank wall 1 is an open side, the circumference of the open side is greater than the circumference of the closed side plate, the open side surface of the reinforced iron shell 3 is fixedly welded at the outer surface position of the oil tank wall 1 of the extra-high voltage reactor oil tank, and the structure of the reinforced iron shell 3 which is small outside and large inside can make the welding more firm. The middle part of the front view of the reinforced iron shell 3 is in a boat-shaped structure, and the middle part of the top view of the reinforced iron shell 3 is in a U-shaped structure. The reinforced iron shell 3 adopts a high-strength, corrosion-resistant low-alloy steel plate to ensure the durability and stability of the oil tank noise reduction mechanism.

[0018] A plurality of horizontal long strip pressing plates 2 are welded and installed on the left and right inner walls of the reinforced iron shell 3 at a certain upper and lower interval distance, Figure 1 The long strip pressing plate 2 in the figure is in perspective effect and is located in the interior of the reinforced iron shell 3. The long strip pressing plate 2 adopts a low-alloy steel plate, the two ends of the long strip pressing plate 2 are firmly welded with the left and right inner walls of the reinforced iron shell 3, a dry quartz sand layer 6 is first arranged in the inside of the closed side plate of the reinforced iron shell 3, the quartz sand layer 6 serves as the outermost part of the noise barrier, and the plurality of long strip pressing plates 2 are combined together to preliminarily fix the quartz sand layer 6. The sound insulation plate 5 and the sound-absorbing cotton 4 are sequentially arranged in the inside of the long strip pressing plate 2, the sound-absorbing cotton 4 is adjacent to the oil tank wall 1, the sound insulation plate 5 and the sound-absorbing cotton 4 can tightly fill the internal space of the reinforced iron shell 3, further fix the quartz sand layer 6, and the combination of the two materials can have the dual performance of sound absorption and sound insulation, so that the optimal sound absorption and sound insulation technical effect is achieved.

[0019] The processing method of the extra-high voltage shunt reactor oil tank noise reduction mechanism provided in the embodiment of the utility model is as follows:

[0020] The closed side plate of the reinforced iron shell 3 is horizontally placed on the ground, and a layer of dry quartz sand layer 6 is laid above the closed side plate. Then, a plurality of long strip pressing plates 2 are welded on the left and right inner walls of the reinforced iron shell 3, the length of the long strip pressing plates 2 matches the distance between the left and right inner walls of the reinforced iron shell 3, the plurality of long strip pressing plates 2 are uniformly arranged at a certain distance, and the plurality of long strip pressing plates 2 form a stable filling frame to preliminarily fix the quartz sand layer 6. The sound insulation plate 5 and the sound-absorbing cotton 4 are placed above the long strip pressing plates 2 in sequence, so that the sound insulation plate 5 and the sound-absorbing cotton 4 can tightly fill the internal space of the reinforced iron shell 3, and the filling material is full without gap, so that the best sound absorption and sound insulation effect is achieved. Finally, the reinforced iron shell 3 is welded on the outer side of the oil tank wall 1, the closed side plate is arranged parallel to the oil tank wall 1, and the noise reduction mechanism can be distributed on the outer side of the oil tank wall 1 according to actual needs, so as to construct a stable and efficient noise protection barrier, which effectively blocks the noise generated in the operation process of the reactor.

[0021] In the embodiments of the utility model, the technical features not described in detail are prior art or conventional technical means, which will not be described here.

[0022] Finally, it should be noted that: the above embodiments are only specific embodiments of the utility model, which are used to illustrate the technical solutions of the utility model, but not to limit it, and the protection scope of the utility model is not limited to this. Those skilled in the art should understand that: any person skilled in the art can modify or easily think of changes to the technical solutions recorded in the above embodiments within the technical range disclosed by the utility model, or make equivalent replacement to some technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A noise reduction mechanism for an ultra-high voltage parallel reactor tank, comprising a reinforced iron shell (3), characterized in that, The reinforced iron shell (3) includes a closed side plate and an open side plate arranged opposite to each other. The closed side plate is integrally formed with a blocking side plate to form an open side plate. A quartz sand layer (6) is provided on the inner side of the closed side plate. Several long strip pressure plates (2) are evenly distributed on the inner side of the quartz sand layer (6). The two ends of the long strip pressure plates (2) are welded to the left and right inner walls of the reinforced iron shell (3). A sound insulation plate (5) and a sound-absorbing cotton (4) are arranged in sequence on the inner side of the long strip pressure plates (2). The open side of the reinforced iron shell (3) is welded to the outer surface of the tank wall (1).

2. The noise reduction mechanism for the oil tank of the ultra-high voltage parallel reactor according to claim 1, characterized in that, The perimeter of the open side is greater than the perimeter of the closed side panel.

3. The noise reduction mechanism for the oil tank of the ultra-high voltage parallel reactor according to claim 1, characterized in that, The reinforced iron shell (3) is made of low alloy steel plate.

4. The noise reduction mechanism for the oil tank of the ultra-high voltage parallel reactor according to claim 1, characterized in that, The long strip pressure plate (2) is made of low alloy steel plate.

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