CN106655717B

CN106655717B - Low-noise power converter

Info

Publication number: CN106655717B
Application number: CN201611007853.3A
Authority: CN
Inventors: 刘炳言; 李�昊; 房媛; 胡宝利; 王俊骄; 许一彬; 杨惠淑; 李朝霞; 王美玲
Original assignee: Qixia Power Supply Company State Grid Shandong Electric Power Co
Current assignee: Qixia Power Supply Company State Grid Shandong Electric Power Co
Priority date: 2016-11-16
Filing date: 2016-11-16
Publication date: 2023-06-09
Anticipated expiration: 2036-11-16
Also published as: CN106655717A

Abstract

The utility model discloses a low-noise power converter, which comprises a converter and a binding post arranged at the upper part of the converter, wherein a support is arranged below a base of the converter, a cover body is arranged above the support, the lower end of the cover body is fixedly connected to the upper end surface of the support, a downward-inclined barb is arranged on the edge of the support, the cover body is sleeved outside the converter, a through hole is arranged on the cover body, a ceramic tube is arranged in the through hole, a support plate is arranged at the inner side of the cover body, the support plate is connected with the cover body through a cross rod, the cover body is made of a metal plate, a sound insulation plate is sleeved outside the cover body, and the sound insulation plate is provided with a foam plate.

Description

Low-noise power converter

Technical Field

The present utility model relates to a low noise power converter.

Background

In the running process of the converter, low-frequency noise can be generated, the low-frequency noise can cause chronic nerve injury to people, the emotion of people is easily influenced, and the problems of dysphoria, insomnia, neurasthenia and the like are caused. When the existing converter is installed, the existing converter is directly exposed to be installed or is directly wrapped by a layer of cabinet body, low-frequency noise generated by the existing converter cannot be reduced, and the problem of noise pollution exists for a long time. Because a large number of binding posts need to be installed on the converter, the conventional wiring mode has the problem of troublesome wiring.

Disclosure of Invention

The utility model aims to provide a low-noise power converter, which can greatly reduce noise generated by the converter by arranging a sound insulation and radiation protection structure outside the converter, and can conveniently wire cables to facilitate the maintenance of the converter.

The utility model is realized by the following technical scheme:

a low noise power converter comprises a converter and a binding post arranged on the upper part of the converter, a support is arranged below a base of the converter, a cover body is arranged above the support, the lower end of the cover body is fixedly connected to the upper end face of the support, a downward inclined barb is arranged on the edge of the support, the cover body is sleeved outside the converter, a through hole is arranged on the cover body, a ceramic tube is arranged in the through hole, a support plate is arranged on the inner side of the cover body, the support plate is connected with the cover body through a cross rod, the through hole is arranged on the cover body, the cross rod penetrates through the through hole, a limit plate is arranged at one end of the cross rod far away from the support plate, springs are respectively sleeved on the cross rods on two sides of the cover body, the cover body is made of metal plates, the sound insulation plate foam plates are sleeved outside the cover body, uniformly distributed vent holes are formed in the sound insulation plate, the vent holes gradually reduce from inside to outside, irregularly arranged blind holes are formed around the vent holes, the sound insulation plate is formed by two groups of inner and outer parallel to each other, the metal plates are arranged outside the sound insulation plate and positioned outside, ceramic tubes sequentially penetrate through the sound insulation plate and the metal plates, the ceramic tubes are as high as the upper end surfaces of the binding posts, electromagnets are arranged on the support, sliding rods longitudinally moving along the sliding rods are arranged on the inner sides of the sliding grooves, armatures matched with the electromagnets are arranged in the middle of the sliding rods, when the electromagnet is arranged, one end of the sliding rod, which is far away from the sliding groove, is positioned above the upper end surface of the base of the converter, and a reset spring is arranged between the lower end surface of the sliding rod and the upper end surface of the base of the converter. According to the utility model, a plurality of groups of ceramic tubes are arranged on the cover body, so that the ceramic tubes are matched with the binding posts, cables are connected through different ceramic tubes according to requirements, the cables can be conveniently distinguished and wired, and the classification and maintenance are convenient.

Further, in order to better realize the utility model, an end cover is arranged above the metal plate, grooves are arranged on the lower end face of the end cover, the grooves are respectively arranged 4 above the binding posts, ceramic plates are clamped on the inner sides of the grooves, irregular through holes are arranged on the ceramic plates, the upper end face of the ceramic plates is suspended relatively, and air pipes communicated with the inner sides of the grooves are arranged on the upper end face of the end cover.

Further, in order to better realize the utility model, the upper end face of the metal plate is provided with a flange, and the lower end face of the end cover is provided with a clamping groove matched with the flange.

Further, in order to better realize the utility model, a screw is arranged at the outer side of the end cover, the upper end of the screw is rotationally connected at the outer side of the end cover, a mounting plate is arranged at the outer side of the metal plate, a through groove is arranged on the mounting plate, a nut is arranged at one end, far away from the end cover, of the screw, and one end, far away from the end cover, of the screw can be clamped at the inner side of the through groove so that the nut is attached to the lower end face of the mounting plate.

Further, in order to better realize the utility model, a groove is arranged on the lower end surface of the mounting plate, and the nut can be clamped inside the groove.

Further, in order to better realize the utility model, the outer side of the converter is provided with a sleeve, the inner sides of four vertex angles of the sleeve are respectively provided with a support block with a right-angle cross section, the inner end faces of the support blocks are attached to the outer sides of the four vertex angles of the converter, and the lower end face of the sleeve is connected with one end of the sliding rod, which is far away from the sliding groove.

Further, in order to better realize the present utility model.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the ceramic tube arranged on the cover body is adopted, so that the circuit output by the binding post can be conveniently and respectively output through the ceramic tube, the wiring can be better carried out, the maintenance and the installation are convenient, and the low-frequency noise generated by the converter can be absorbed by utilizing the two-layer foam sound insulation plate, so that the effects of isolation and noise reduction are achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Wherein: 101. the transformer, 102, support, 103, cover, 104, brace, 105, cross bar, 106, stop plate, 107, spring, 108, acoustic panel, 109, vent, 110, blind hole, 111, metal plate, 112, electromagnet, 113, runner, 114, slide rod, 115, armature, 116, end cap, 117, ceramic plate, 118, air duct, 119, flange, 120, clamping groove, 121, screw, 122, mounting plate, 123, through groove, 124, bushing, 125, brace, 126, return spring, 127, binding post.

Description of the embodiments

The present utility model will be described in further detail with reference to specific examples, but embodiments of the present utility model are not limited thereto.

In the utility model, in order to reduce the low-frequency noise generated by the converter and facilitate the installation of the converter, a preferred structure of the converter is disclosed, as shown in figure 1, a low-noise power converter comprises a converter 101 and a binding post 127 arranged at the upper part of the converter 101, a support 102 is arranged below the base of the converter 101, a cover body 103 is arranged above the support 102, the lower end of the cover body 103 is fixedly connected to the upper end surface of the support 102, a barb inclining downwards is arranged on the edge of the support 102, the cover body 103 is sheathed outside the converter 101, a through hole is arranged on the cover body 103, a ceramic tube 128 is arranged in the through hole, a support plate 104 is arranged at the inner side of the cover body 103, the support plate 104 is connected with the cover body 103 through a cross rod 105, a through hole is arranged on the cover body 103, the cross bar 105 penetrates through the through hole, a limit plate 106 is arranged at one end of the cross bar 105 far away from the support plate 104, springs 107 are respectively sleeved on the cross bars 105 at two sides of the cover body 103, the cover body 103 is made of metal plates, a sound insulation plate 108 is sleeved outside the cover body 103, the sound insulation plate 108 is provided with foam plates, uniformly distributed vent holes 109 are arranged on the sound insulation plate 108, the vent holes 109 gradually reduce from inside to outside, irregularly arranged blind holes 110 are arranged around the vent holes 109, the sound insulation plate 108 is provided with two groups of inner and outer parallel arranged plates, a metal plate 111 is arranged outside the sound insulation plate 108 at the outer side, ceramic tubes 128 sequentially penetrate through the sound insulation plate 108 and the metal plate 111, the ceramic tubes 128 are as high as the upper end surfaces of the binding posts 127, the utility model relates to a novel electromagnetic transducer, which is characterized in that an electromagnet 112 is arranged on a support 102, a chute 113 is arranged on the inner wall of a cover body 103, a sliding rod 114 capable of longitudinally moving along the chute 113 is arranged on the inner side of the chute 113, an armature 115 matched with the electromagnet 112 is arranged in the middle of the sliding rod 114, one end of the sliding rod (114 far away from the chute 113) is positioned above the upper end surface of a base of the transducer 101 when the electromagnet 112 is arranged, and a return spring 126 is arranged between the lower end surface of the sliding rod 114 and the upper end surface of the base of the transducer 101.

In this embodiment, in order to facilitate cooling the converter when needed, preferably, an S-shaped groove is provided on the inner wall of the cover 103, and a heat exchange tube is laid in the groove. The heat exchange tube clamped in the groove is utilized to convey low-temperature liquid in the heat exchange tube, so that the low-temperature liquid can exchange heat with the inside of the cover body, the temperature in the cover body is reduced, and the temperature of the converter is further reduced. In this embodiment, install the support in treating the mounted position, install the base of converter in the support top, make the cover body cover in the converter outside, make the extension board laminating on the lateral wall of converter, under the effect of limiting plate and spring, when making the outer wall extrusion extension board of converter, the extension board is under the elastic force effect of spring, the effort that it received can be to buffering, utilize the acoustic celotex board of setting in the outside, can play the effect of reducing the converter noise, owing to be provided with the ventilation hole on the acoustic celotex board, can be when the sound wave propagates along the ventilation hole, gradually reduce, and under the blind hole effect of acoustic celotex board, the sound wave is reduced gradually, through the effect of two-layer acoustic celotex board, make noise greatly reduced. In the utility model, the vent holes with gradually reduced diameters are utilized to gradually reduce the sound wave transmission channel, so that the energy is absorbed by the sound insulation plate, and the noise is greatly reduced.

Because some low noise power converters can be built on stilts the installation, when the maintenance, the staff can adopt dedicated climbing equipment or lifting device, maintains the operation to built on stilts the converter of installation, utilizes the barb structure, can avoid having non-staff to climb the converter, can reduce the stolen problem of cable on the converter to, can avoid leading to the problem of potential safety hazard because non-staff climbs.

In this embodiment, when the installation, make the electro-magnet be the outage state, monitor the state of converter through the sensor, when the converter is the incline state, make the electro-magnet circular telegram, electro-magnet absorption armature drives the slide bar and moves down along the spout, until the reset spring of slide bar below compresses tightly on the converter base up end, utilizes this structure, when the converter receives the exogenic action to produce the slope, fixes the converter, avoids the converter to produce further damage.

Because the ceramic tube is arranged, the ceramic tube corresponds to the position of the binding post, the cable connected with the binding post can be output through the ceramic tube and connected with an external cable, the laying of a circuit can be facilitated, and the problem of circuit short circuit caused by aging of the cable can be avoided by utilizing the ceramic tube structure.

Example 1:

in this embodiment, in order to facilitate ventilation of the inside of the cover body and reduce dust on the outer wall of the converter when needed, preferably, an end cover 116 is disposed above the metal plate 111, grooves are disposed on the lower end surface of the end cover 116, the grooves are respectively disposed above 4 binding posts 127, ceramic plates 117 are clamped inside the grooves, irregular through holes are disposed on the ceramic plates 117, the upper end surface of the ceramic plates 117 is suspended relatively, and air pipes 118 communicating with the inner sides of the grooves are disposed on the upper end surface of the end cover 116. In this embodiment, utilize vacuum pump intercommunication trachea, when needs, utilize the outside dust of vacuum pump suction converter, simultaneously, can clear up through fan intercommunication converter outer wall. Because four grooves are formed in the end cover, high-speed wind can be conveyed to the positions of the wiring columns from the four positions, the wiring columns are cleaned, and dust adhesion on the wiring columns is reduced.

Because the converter outside can cover the one deck insulating varnish generally, play the guard action to the converter, current clearance mode causes the converter surface insulating varnish to damage easily, influence the performance of converter, in this example, utilize the trachea to let in high-speed wind to the cover body inside, will adhere to the dust on converter surface and blow up, can reuse the vacuum pump to suck out the dust, owing to adopt the ceramic plate, it has higher wearability, and, utilize porous structure, can suck out inside wind dust better, and, utilize the wind-force that the suction produced, can make the wind dust adhere to on the ceramic plate, when necessary, the change ceramic plate can.

In this embodiment, utilize porous ceramic plate structure, noise that can reduce vacuum pump or fan operation in-process production greatly, conveniently maintain to make the higher bigger degree of dust on converter surface adsorb out.

Example 2:

in this embodiment, in order to facilitate the installation of the end cap, it is preferable that a flange 119 is provided on the upper end surface of the metal plate 111, and a slot 120 matching with the flange 119 is provided on the lower end surface of the end cap 116. Through draw-in groove structure and flange structure, when can making the end cover in the metal sheet top, reduce the relative movement of end cover and metal sheet in the horizontal direction, improve its stability greatly.

Further preferably, in this embodiment, for convenience in disassembly, a screw for fixing the end cap is rotatably connected to the end cap, specifically, a screw 121 is provided at the outer side of the end cap 116, the upper end of the screw 121 is rotatably connected to the outer side of the end cap 116, a mounting plate 122 is provided at the outer side of the metal plate 111, a through groove 123 is provided on the mounting plate 122, a nut is provided at one end of the screw 121 away from the end cap 116, and one end of the screw 121 away from the end cap 116 can be clamped at the inner side of the through groove 123 to enable the nut to be attached to the lower end face of the mounting plate 122. During installation, the clamping grooves on the end covers are aligned with the flanges on the metal plates, so that after the end covers are relatively fixed, the screw is rotated, the lower ends of the screws are inserted into the inner sides of the through grooves, at the moment, the nuts are locked on the lower end faces of the mounting plates, and the nuts are relatively screwed down, so that the end covers are connected with the metal plates through the screws.

Further preferably, in order to avoid the nut for fixing the screw from falling off under the action of external force, a groove is preferably provided on the lower end surface of the mounting plate 122, and the nut can be clamped inside the groove. Utilize groove structure, when making the nut relative rotation, the joint is inboard at the recess, locks the nut in the mounting panel below relatively this moment, makes the nut can not be relative mounting panel lower terminal surface horizontal migration, can improve the stability of screw rod greatly.

Example 3:

in this embodiment, in order to keep the converter stable when the external force acts on the converter, it is further preferable in the base of embodiment 1 that a sleeve 124 is disposed on the outer side of the converter 101, supporting blocks 125 with right angles in cross section are disposed on the inner sides of four top corners of the sleeve 124, inner side end surfaces of the supporting blocks 125 are attached to the outer sides of the four top corners of the converter 101, and the lower end surface of the sleeve 124 is connected with one end of the sliding rod 114 far away from the sliding groove 113. Through adopting the sleeve pipe, make sleeve pipe relatively fixed in the converter outside, support and fix the converter, make it have higher stability, when the electro-magnet circular telegram, utilize the slide bar to fix the converter base, utilize the sleeve pipe to fix the converter lateral wall, can make the area of contact increase of outside bearing structure and converter, avoid the converter to produce the slope when receiving the exogenic action, improve its stability and security greatly.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A low noise power converter, characterized by: comprises a converter (101) and a binding post (127) arranged at the upper part of the converter (101), a support (102) is arranged below a base of the converter (101), a cover body (103) is arranged above the support (102), the lower end of the cover body (103) is fixedly connected to the upper end face of the support (102), a barb which inclines downwards is arranged on the edge of the support (102), the cover body (103) is sleeved outside the converter (101), a through hole is arranged on the cover body (103), ceramic tubes (128) are arranged in the through hole, support plates (104) are arranged on the inner side of the cover body (103), the support plates (104) are connected with the cover body (103) through cross bars (105), the cross bars (105) penetrate through the through holes, limit plates (106) are arranged at one end of the cross bars (105) far away from the support plates (104), the two sides of the cover body (103) are uniformly sleeved with metal cover bodies (108), the two side of the cover body (103) are respectively provided with sound insulation plates (108), the air vent (109) is gradually reduced from inside to outside, blind holes (110) which are irregularly arranged are formed in the periphery of the air vent (109), the sound insulation plate (108) is provided with an inner group and an outer group which are arranged in parallel, a metal plate (111) is arranged outside the sound insulation plate (108) which is positioned at the outer side, a ceramic tube (128) sequentially penetrates through the sound insulation plate (108) and the metal plate (111), the ceramic tube (128) is as high as the upper end surface of a binding post (127), an electromagnet (112) is arranged on a support (102), a sliding groove (113) is formed in the inner wall of a cover body (103), a sliding rod (114) which can longitudinally move along the sliding groove (113) is arranged at the inner side of the sliding groove (113), an armature (115) which is matched with the electromagnet (112) is arranged in the middle of the sliding rod (114), one end of the sliding rod (114) which is far away from the sliding groove (113) is positioned above the upper end surface of a converter (101), and a reset end surface of the converter (126) is arranged between the sliding rod (101) and the lower end surface of the converter (126);

an end cover (116) is arranged above the metal plate (111), grooves are formed in the lower end face of the end cover (116), the number of the grooves is 4 which are respectively arranged above the binding posts (127), ceramic plates (117) are clamped inside the grooves, irregular through holes are formed in the ceramic plates (117), and air pipes (118) which are communicated with the inner sides of the grooves are arranged on the upper end face of the end cover (116);

the converter (101) outside be provided with sleeve pipe (124), four apex angle inboards of sleeve pipe (124) be provided with respectively transversal personally submitting rectangular prop (125), prop up the inboard terminal surface laminating of piece (125) and be in converter (101) four apex angle outsides, sleeve pipe (124) lower terminal surface with slide rod (114) keep away from spout (113) one end and be connected.

2. A low noise power converter according to claim 1, wherein: a flange (119) is arranged on the upper end face of the metal plate (111), and a clamping groove (120) matched with the flange (119) is arranged on the lower end face of the end cover (116).

3. A low noise power converter according to claim 1 or 2, characterized in that: the novel screw bolt comprises an end cover (116), and is characterized in that a screw bolt (121) is arranged on the outer side of the end cover (116), the upper end of the screw bolt (121) is rotationally connected to the outer side of the end cover (116), a mounting plate (122) is arranged on the outer side of a metal plate (111), a through groove (123) is formed in the mounting plate (122), a nut is arranged at one end, far away from the end cover (116), of the screw bolt (121), one end, far away from the end cover (116), of the screw bolt (121) can be clamped on the inner side of the through groove (123) to enable the nut to be attached to the lower end face of the mounting plate (122).

4. A low noise power converter according to claim 3, wherein: the lower end face of the mounting plate (122) is provided with a groove, and the nut can be clamped inside the groove.

5. A low noise power converter according to claim 1, wherein: an S-shaped groove is formed in the inner wall of the cover body (103), and a heat exchange tube is paved in the groove.