CN209297861U - A kind of box type transformer with sound insulation and decrease of noise functions - Google Patents

A kind of box type transformer with sound insulation and decrease of noise functions Download PDF

Info

Publication number
CN209297861U
CN209297861U CN201920050804.0U CN201920050804U CN209297861U CN 209297861 U CN209297861 U CN 209297861U CN 201920050804 U CN201920050804 U CN 201920050804U CN 209297861 U CN209297861 U CN 209297861U
Authority
CN
China
Prior art keywords
sound insulation
sound
noise
stainless steel
fixedly connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920050804.0U
Other languages
Chinese (zh)
Inventor
戴月平
徐进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANTONG HAIWANG ELECTRIC Co
Original Assignee
NANTONG HAIWANG ELECTRIC Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANTONG HAIWANG ELECTRIC Co filed Critical NANTONG HAIWANG ELECTRIC Co
Priority to CN201920050804.0U priority Critical patent/CN209297861U/en
Application granted granted Critical
Publication of CN209297861U publication Critical patent/CN209297861U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Casings For Electric Apparatus (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

The utility model discloses a kind of box type transformers with sound insulation and decrease of noise functions, belong to transformer technology field, a kind of box type transformer with sound insulation and decrease of noise functions, including stainless steel cabinet, stainless steel cabinet lower end is fixedly connected with a pair of of assembly channel steel, sound insulation and noise reduction cover is fixedly connected on stainless steel cabinet inner wall, erecting bed is fixedly connected in sound insulation and noise reduction cover inner bottom wall, there are three equally distributed mounting grooves for the cutting of erecting bed upper end, pad is equipped with bumper and absorbing shock layer in mounting groove, it is separately installed with hyperbaric chamber from left to right in three mounting grooves, transformer room and low-pressure chamber, stainless steel cabinet left and right ends, which are dug, heat exchanging holes, shutter is installed in heat exchanging holes, sound insulation and noise reduction cover left and right ends, which are equally dug, the air duct to match with heat exchanging holes, it may be implemented on the one hand to reduce the noise that transformer generates in the process of running, another party The transmitting of noise outwardly is reduced in face, and then reduces noise pollution, facilitates the popularization and use of box type transformer.

Description

A kind of box type transformer with sound insulation and decrease of noise functions
Technical field
The utility model relates to transformer technology fields, more specifically to a kind of case with sound insulation and decrease of noise functions Formula transformer.
Background technique
Traditional transformer and other attachment central combinations are exactly mounted in box-type shell by box type transformer, are become Volume compact, transformation power supply system light-weight, easy for installation, box type transformer not just transformer, it is equivalent to one Small Substation power distribution station can directly provide a user power supply.
Box type transformer generally includes hyperbaric chamber, transformer room, low-pressure chamber;Hyperbaric chamber is exactly source side, and usually 35,000 Volt perhaps 10 kilovolts of inlet wires including high-voltage busbar (Highvoltagebusbar), breaker or fuse, voltage transformer, Arrester etc. is all transformer in pressure change chamber, is the capital equipment that case becomes, has low-voltage busbar inside low-pressure chamber (Lowvoltagebusbar), low-voltage circuit breaker, metering device, arrester etc., lead line supplies user from low-voltage busbar Electricity.
Box-type substation is suitable for mine, factory and enterprise, oil gas field and wind power station, it matches instead of original civil engineering Electric room, power distribution station become novel complete change power distribution equipment, while also having come into residential neighborhoods, but due to existing transformation The limitation that device itself designs, so that transformer vibration occurs in the process of running to generate noise, while transformer Cooling The operation of system also generates mechanicalness noise, causes serious influence to transformer surroundings, transformer passes through air around The noise of transmitting is synthesized by two parts noise, and a part is due to this bulk noise that tank wall vibrates and generates;Another part It is due to the cooling device noise of cooling fan and oil pump vibration generation, the improvement of noise pollution is in recent years increasingly by weight Depending on excessive noise will affect the daily life of surrounding resident, influence the rest of resident.
Utility model content
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of this utility model is to provide one kind to have sound insulation and decrease of noise functions Box type transformer, it may be implemented on the one hand to reduce the noise that generates in the process of running of transformer, on the other hand reduces and makes an uproar The transmitting of sound outwardly, and then noise pollution is reduced, facilitate the popularization and use of box type transformer.
2. technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of box type transformer with sound insulation and decrease of noise functions, including stainless steel cabinet, the stainless steel cabinet lower end are solid Surely it is connected with a pair of of assembly channel steel, is fixedly connected with sound insulation and noise reduction cover, the sound insulation and noise reduction cover on the stainless steel cabinet inner wall Erecting bed is fixedly connected in inner bottom wall, there are three equally distributed mounting groove, the mounting grooves for the erecting bed upper end cutting Interior pad is equipped with bumper and absorbing shock layer, is separately installed with hyperbaric chamber, transformer room and low-pressure chamber from left to right in three mounting grooves, The stainless steel cabinet left and right ends, which are dug, heat exchanging holes, and shutter, the sound insulation and noise reduction cover are equipped in the heat exchanging holes Left and right ends, which are equally dug, the air duct to match with heat exchanging holes, and fan shroud, the fan shroud are fixedly connected in the air duct Cooling blower is inside installed, the stainless steel cabinet upper end is fixedly connected with protection top plate, may be implemented on the one hand to reduce transformation On the other hand the noise that device generates in the process of running reduces the transmitting of noise outwardly, and then reduces noise pollution, facilitate case The popularization and use of formula transformer.
Further, the sound insulation and noise reduction cover has respectively included puigging, buffer layer and sound absorbing layer from outside to inside, it is described every It is fixedly connected with steel wire between sound-absorbing layer and buffer layer, is equally fixedly connected with steel wire between the buffer layer and sound absorbing layer, Sound absorbing layer plays the effect for absorbing sound wave, and buffer layer plays cushioning effect, improves the shock resistance of stainless steel cabinet to a certain extent Ability, puigging play the role of the effect for completely cutting off sound, and steel wire plays support and stablizes sound insulation and noise reduction cover, puigging and suction Sound-absorbing layer cooperates acoustic isolation while weakening sound in stainless steel cabinet, is not easy to be transferred to the external world and causes noise dirt Dye.
Further, the buffer layer includes a pair of of elastic cushion and multiple balls, and multiple balls are evenly distributed on Between a pair of of elastic cushion, buffer layer uses EVA material, has good elasticity, and ball is playing support and stabilization Meanwhile itself also has elasticity, plays cushioning effect, digging in the sound absorbing layer has multiple sound-absorbing cavitys, the sound-absorbing cavity Interior to be filled with sound-absorbing core, sound-absorbing core can be one or more of glass fibre, sound-absorbing sponge, fine sand, iron filings, and enhancing is inhaled The sound-absorbing effect of sound-absorbing layer.
Further, the bumper and absorbing shock layer includes outer concave silicagel pad and inner concave shape silicagel pad, and outer concave silicagel pad It covers on the outside of inner concave shape silicagel pad, is fixedly connected with multiple buffering gas between the outer concave silicagel pad and inner concave shape silicagel pad Capsule has excellent shock absorbing effect, can weaken the shake itself generated when hyperbaric chamber, transformer room and low-pressure chamber work It is dynamic, and then reduce vibration bring noise.
Further, the shutter is provided with damping screen close to sound insulation and noise reduction cover side, and in damping screen and heat exchanging holes It is fixedly connected between wall, plays current stabilization and dust-proof effect, so that cooling blower is less prone to biggish sound of the wind at work.
Further, the stainless steel cabinet and protection top plate outer surface are coated with rust-proof coating, stainless steel cabinet and Protection top plate, which is chronically exposed to, to be also not easy to corrode in external environment, is prolonged the service life, the protection top plate lower end, which is dug, four A flow blocking slot, plays the role of water conservancy diversion rainwater, is not easy to flow to stainless steel cabinet along side wall from protection top plate.
3. beneficial effect
Compared with the prior art, utility model has the advantages that
(1) this programme may be implemented on the one hand to reduce the noise that transformer generates in the process of running, on the other hand reduce The transmitting of noise outwardly, and then noise pollution is reduced, facilitate the popularization and use of box type transformer.
(2) sound insulation and noise reduction cover has respectively included puigging, buffer layer and sound absorbing layer from outside to inside, puigging and buffer layer it Between be fixedly connected with steel wire, steel wire is equally fixedly connected between buffer layer and sound absorbing layer, sound absorbing layer plays absorption sound wave Effect, buffer layer plays cushioning effect, improves the impact resistance of stainless steel cabinet to a certain extent, and puigging plays isolation The effect of sound, steel wire play the role of support and stablize sound insulation and noise reduction cover, and puigging and sound absorbing layer mutual cooperation are weakening While sound by acoustic isolation in stainless steel cabinet, it is not easy to be transferred to the external world and causes noise pollution.
(3) buffer layer includes a pair of of elastic cushion and multiple balls, and multiple balls are evenly distributed on a pair of of elastic cushion Between, buffer layer use EVA material, have good elasticity, ball while playing support and stabilization, itself With elasticity, cushioning effect is played, digging in sound absorbing layer there are multiple sound-absorbing cavitys, and sound-absorbing core, sound-absorbing are filled in sound-absorbing cavity Core can be one or more of glass fibre, sound-absorbing sponge, fine sand, iron filings, enhance the sound-absorbing effect of sound absorbing layer.
(4) bumper and absorbing shock layer includes outer concave silicagel pad and inner concave shape silicagel pad, and outer concave silica gel cushion cover is in interior concave On the outside of silicagel pad, multiple buffer air bags are fixedly connected between outer concave silicagel pad and inner concave shape silicagel pad, are delayed with excellent Cushioning effect is rushed, the vibration itself generated when hyperbaric chamber, transformer room and low-pressure chamber work can be weakened, and then reduces vibration band The noise come.
(5) shutter is provided with damping screen close to sound insulation and noise reduction cover side, and fixed between damping screen and heat exchanging holes inner wall Connection, plays current stabilization and dust-proof effect, so that cooling blower is less prone to biggish sound of the wind at work.
(6) stainless steel cabinet and protection top plate outer surface are coated with rust-proof coating, and stainless steel cabinet and protection top plate are long Phase, which is exposed to, to be also not easy to corrode in external environment, is prolonged the service life, and there are four flow blocking slots for the cutting of protection top plate lower end, is played and is led The effect for flowing rainwater is not easy to flow to stainless steel cabinet along side wall from protection top plate.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model;
Fig. 2 is the structural schematic diagram of the utility model sound insulation and noise reduction cover portion point;
Fig. 3 is the structural schematic diagram of the utility model bumper and absorbing shock layer part.
Figure label explanation:
1 stainless steel cabinet, 2 assembly channel steels, 3 sound insulation and noise reduction covers, 301 puiggings, 302 buffer layers, 303 sound absorbing layers, 4 installations Platform, 5 hyperbaric chambers, 6 transformer rooms, 7 low-pressure chambers, 8 bumper and absorbing shock layers, 801 outer concave silicagel pads, 802 inner concave shape silicagel pads, 803 Buffer air bag, 9 shutters, 10 damping screens, 11 fan shrouds, 12 cooling blowers, 13 protection top plates, 14 flow blocking slots, 15 steel wires, 16 Ball, 17 sound-absorbing cores.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe;Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside", " top/bottom end " etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used for description mesh , it is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " being provided with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, can also be with It is to be detachably connected, or be integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be with Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Embodiment 1:
Referring to Fig. 1, a kind of box type transformer with sound insulation and decrease of noise functions, including stainless steel cabinet 1, stainless steel cabinet 1 lower end is fixedly connected with a pair of of assembly channel steel 2, plays the role of support and stablizes stainless steel cabinet 1, and facilitates technical staff will The installation of stainless steel cabinet 1 is fixedly connected with sound insulation and noise reduction cover 3 on 1 inner wall of stainless steel cabinet, plays sound insulation and noise reduction to designated place Effect, be fixedly connected with erecting bed 4 in 3 inner bottom wall of sound insulation and noise reduction cover, provide mounting platform, 4 upper end of erecting bed, which is dug, three A equally distributed mounting groove, pad is equipped with bumper and absorbing shock layer 8 in mounting groove, plays the role of bumper and absorbing shock, in three mounting grooves It is separately installed with hyperbaric chamber 5, transformer room 6 and low-pressure chamber 7 from left to right, 1 left and right ends of stainless steel cabinet, which are dug, heat exchange Hole, the heat generated for distributing hyperbaric chamber 5, when transformer room 6 and low-pressure chamber 7 work are equipped with shutter 9 in heat exchanging holes, It improves and 3 side of sound insulation and noise reduction cover is provided with damping screen 10 with extraneous heat exchange area and heat exchange efficiency, shutter 9, and It is fixedly connected between damping screen 10 and heat exchanging holes inner wall, plays current stabilization and dust-proof effect, so that cooling blower 12 is at work It is less prone to biggish sound of the wind, 3 left and right ends of sound insulation and noise reduction cover, which are equally dug, the air duct to match with heat exchanging holes, solid in air duct Surely it is connected with fan shroud 11, cooling blower 12 is installed in fan shroud 11, for hyperbaric chamber 5, transformer room 6 and low-pressure chamber 7 Cool down, 1 upper end of stainless steel cabinet is fixedly connected with protection top plate 13, plays the role of protecting stainless steel cabinet 1, stainless steel Cabinet 1 and protection 13 outer surface of top plate are coated with rust-proof coating, and stainless steel cabinet 1 and protection top plate 13 are chronically exposed to the external world It is also not easy to corrode in environment, prolong the service life, there are four flow blocking slots 14 for the cutting of protection 13 lower end of top plate, play water conservancy diversion rainwater Effect is not easy to flow to stainless steel cabinet 1 along side wall from protection top plate 13.
Referring to Fig. 2, sound insulation and noise reduction cover 3 has respectively included puigging 301, buffer layer 302 and sound absorbing layer from outside to inside 303, puigging 301 is the EVA material with closed pore structure, and sound absorbing layer 303 is open cell type polyethylene foam-material, puigging It is fixedly connected with steel wire 15 between 301 and buffer layer 302, is equally fixedly connected with steel between buffer layer 302 and sound absorbing layer 303 Silk screen 15, sound absorbing layer 303 play the effect for absorbing sound wave, and buffer layer 302 plays cushioning effect, improves stainless steel to a certain extent The impact resistance of cabinet 1, puigging 301 play the effect of isolation sound, and steel wire 15 plays support and stablizes sound insulation and noise reduction The effect of cover 3, puigging 301 and sound absorbing layer 303 cooperate acoustic isolation while weakening sound in stainless steel cabinet 1 It is interior, it is not easy to be transferred to the external world and causes noise pollution, buffer layer 302 includes a pair of of elastic cushion and multiple balls 16, and multiple rubbers Glueballs 16 is evenly distributed between a pair of of elastic cushion, and buffer layer 302 uses EVA material, has good elasticity, and ball 16 exists While playing support and stabilization, itself also has elasticity, plays cushioning effect, digging in sound absorbing layer 303 has multiple suctions Sound cavity, is filled with sound-absorbing core 17 in sound-absorbing cavity, sound-absorbing core 17 can be glass fibre, sound-absorbing sponge, fine sand, in iron filings One or more enhance the sound-absorbing effect of sound absorbing layer 303.
Referring to Fig. 3, bumper and absorbing shock layer 8 includes outer concave silicagel pad 801 and inner concave shape silicagel pad 802, and outer concave silicon 801 sets of rubber mat, in 802 outside of inner concave shape silicagel pad, are fixedly connected between outer concave silicagel pad 801 and inner concave shape silicagel pad 802 Multiple buffer air bags 803 have excellent shock absorbing effect, can weaken hyperbaric chamber 5, transformer room 6 and low-pressure chamber 7 and work The vibration that Shi Zishen is generated, and then reduce vibration bring noise.
In use, the noise that hyperbaric chamber 5, transformer room 6 and low-pressure chamber 7 generate when working is by slow on erecting bed 4 The shock absorbing effect of buffer layer 8 is rushed, weaken after part is shaken and then realizes that the first step of noise weakens, is weakened by the first step Noise afterwards absorbs with the sound-absorbing core 17 in sound absorbing layer 303 and sound-absorbing cavity subtract first when being diffused into sound insulation and noise reduction cover 3 Weak part noise can not penetrate away when encountering puigging 301 by the noise that second step weakens, can largely be reflected back and subtract Shake layer 302 and sound absorbing layer 303 are further absorbed, therefore have good soundproof effect, compared with traditional box type transformer, The utility model may be implemented on the one hand to reduce the noise that transformer generates in the process of running, and it is outside on the other hand to reduce noise The transmitting on boundary, and then noise pollution is reduced, facilitate the popularization and use of box type transformer.
More than, the only preferable specific embodiment of the utility model;But the protection scope of the utility model is not limited to In this.Anyone skilled in the art within the technical scope disclosed by the utility model, according to the utility model Technical solution and its improve design be subject to equivalent substitution or change, should all cover within the protection scope of the present utility model.

Claims (6)

1. a kind of box type transformer with sound insulation and decrease of noise functions, including stainless steel cabinet (1), it is characterised in that: described stainless Steel cabinet (1) lower end is fixedly connected with a pair of of assembly channel steel (2), is fixedly connected with sound insulation on stainless steel cabinet (1) inner wall Noise reduction shroud (3) is fixedly connected with erecting bed (4) in sound insulation and noise reduction cover (3) inner bottom wall, and erecting bed (4) upper end is dug There are three equally distributed mounting groove, pad is equipped with bumper and absorbing shock layer (8) in the mounting groove, in three mounting grooves by it is left extremely The right side is separately installed with hyperbaric chamber (5), transformer room (6) and low-pressure chamber (7), and stainless steel cabinet (1) left and right ends are dug There are heat exchanging holes, be equipped in the heat exchanging holes shutter (9), sound insulation and noise reduction cover (3) left and right ends, which are equally dug, to be had and change The air duct that hot hole matches is fixedly connected with fan shroud (11) in the air duct, is equipped with cooling wind in the fan shroud (11) Machine (12), stainless steel cabinet (1) upper end are fixedly connected with protection top plate (13).
2. a kind of box type transformer with sound insulation and decrease of noise functions according to claim 1, it is characterised in that: the sound insulation Noise reduction shroud (3) has respectively included puigging (301), buffer layer (302) and sound absorbing layer (303), the puigging from outside to inside (301) it is fixedly connected between buffer layer (302) steel wire (15), it is same between the buffer layer (302) and sound absorbing layer (303) Sample is fixedly connected with steel wire (15).
3. a kind of box type transformer with sound insulation and decrease of noise functions according to claim 2, it is characterised in that: the damping Layer (302) includes a pair of of elastic cushion and multiple balls (16), and multiple balls (16) be evenly distributed on a pair of of elastic cushion it Between, digging in the sound absorbing layer (303) has multiple sound-absorbing cavitys, is filled with sound-absorbing core (17) in the sound-absorbing cavity.
4. a kind of box type transformer with sound insulation and decrease of noise functions according to claim 1, it is characterised in that: the buffering Buffer layer (8) includes outer concave silicagel pad (801) and inner concave shape silicagel pad (802), and outer concave silicagel pad (801) is covered in indent On the outside of type silicagel pad (802), it is fixedly connected between the outer concave silicagel pad (801) and inner concave shape silicagel pad (802) multiple Buffer air bag (803).
5. a kind of box type transformer with sound insulation and decrease of noise functions according to claim 1, it is characterised in that: the blinds Window (9) is provided with damping screen (10) close to sound insulation and noise reduction cover (3) side, and fixed company between damping screen (10) and heat exchanging holes inner wall It connects.
6. a kind of box type transformer with sound insulation and decrease of noise functions according to claim 1, it is characterised in that: described stainless Steel cabinet (1) and protection top plate (13) outer surface are coated with rust-proof coating, and there are four the cuttings of the protection top plate (13) lower end Flow blocking slot (14).
CN201920050804.0U 2019-01-14 2019-01-14 A kind of box type transformer with sound insulation and decrease of noise functions Expired - Fee Related CN209297861U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920050804.0U CN209297861U (en) 2019-01-14 2019-01-14 A kind of box type transformer with sound insulation and decrease of noise functions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920050804.0U CN209297861U (en) 2019-01-14 2019-01-14 A kind of box type transformer with sound insulation and decrease of noise functions

Publications (1)

Publication Number Publication Date
CN209297861U true CN209297861U (en) 2019-08-23

Family

ID=67642085

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920050804.0U Expired - Fee Related CN209297861U (en) 2019-01-14 2019-01-14 A kind of box type transformer with sound insulation and decrease of noise functions

Country Status (1)

Country Link
CN (1) CN209297861U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110988427A (en) * 2019-11-26 2020-04-10 衡阳市华仪电力互感器有限公司 Power transformer with long service life
CN111140546A (en) * 2019-12-26 2020-05-12 国网北京市电力公司 Noise reduction equipment of transformer fan
CN111696769A (en) * 2020-06-23 2020-09-22 广东电网有限责任公司 Noise suppression device applied to distribution transformer
CN113663422A (en) * 2020-05-13 2021-11-19 苏州佳洁空气过滤器有限公司 Box structure for air purifier
CN113898723A (en) * 2021-10-08 2022-01-07 浙江午马减速机有限公司 Noise reduction box structure for gear speed reducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110988427A (en) * 2019-11-26 2020-04-10 衡阳市华仪电力互感器有限公司 Power transformer with long service life
CN111140546A (en) * 2019-12-26 2020-05-12 国网北京市电力公司 Noise reduction equipment of transformer fan
CN113663422A (en) * 2020-05-13 2021-11-19 苏州佳洁空气过滤器有限公司 Box structure for air purifier
CN111696769A (en) * 2020-06-23 2020-09-22 广东电网有限责任公司 Noise suppression device applied to distribution transformer
CN111696769B (en) * 2020-06-23 2021-07-30 广东电网有限责任公司 Noise suppression device applied to distribution transformer
CN113898723A (en) * 2021-10-08 2022-01-07 浙江午马减速机有限公司 Noise reduction box structure for gear speed reducer
CN113898723B (en) * 2021-10-08 2022-06-17 浙江午马减速机有限公司 Noise reduction box structure for gear speed reducer

Similar Documents

Publication Publication Date Title
CN209297861U (en) A kind of box type transformer with sound insulation and decrease of noise functions
CN206774361U (en) A kind of denoising device of power transformer
CN213340033U (en) Damping waterproof dry-type transformer
CN208316045U (en) A kind of AC low voltage power switch box
CN209709535U (en) A kind of metal enclosed loop-network switch cabinet of all insulation
CN214280618U (en) Energy-saving cooling system of American-type transformer substation
CN213023263U (en) Novel low pressure measurement protection device
CN205354801U (en) Novel ventilation cooling transformer
CN214279735U (en) Noise reduction type transformer
CN110660562B (en) Dry-type transformer for photovoltaic power generation inversion
CN206116178U (en) Transformer noise -absorbing denoising structure
CN211321095U (en) Motor protector with good heat dissipation effect
CN207852456U (en) A kind of denoising device for transformer in transformer substation in city
CN206921613U (en) A kind of voltage transformer protective cover
CN205038393U (en) Ventilative communications optical cable distributing box
CN213040778U (en) V-shaped box type compression condensing unit
CN219916868U (en) Low-noise low-partial discharge energy-saving dry-type transformer
CN206758904U (en) A kind of electric power cabinet of rain-proof dedusting
CN211929199U (en) Low-noise oil-immersed transformer
CN216872670U (en) Shockproof rainproof box-type substation
CN214153719U (en) Heat dissipation block terminal
CN216287836U (en) Electronic transformer protective housing with heat dissipation and noise reduction functions
CN210693227U (en) Noise-reduction box-type substation
CN216381897U (en) External rotor axial flow fan
CN213817001U (en) Low-voltage reactive compensation cabinet body of power equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190823

Termination date: 20200114