CN210327291U - Mutual inductor expansion mounting structure of medium-high voltage generator - Google Patents
Mutual inductor expansion mounting structure of medium-high voltage generator Download PDFInfo
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- CN210327291U CN210327291U CN201921525911.0U CN201921525911U CN210327291U CN 210327291 U CN210327291 U CN 210327291U CN 201921525911 U CN201921525911 U CN 201921525911U CN 210327291 U CN210327291 U CN 210327291U
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Abstract
The utility model discloses a mutual-inductor dilatation mounting structure of well high voltage generator, including installing the mutual-inductor case of going out the line upper box and installing on the fuselage back of the body in the fuselage rear end. The front cover plate of the outgoing line upper box is connected with the rear cover plate of the mutual inductor box through a non-metal hose; three first transformers and a drooping transformer are arranged in the outgoing line upper box; at least three second transformers are arranged in the transformer box; the upper part of the front wall of the upper outgoing line box is connected with three outgoing lines cables through three-phase copper bars, and the three outgoing lines are penetrated into three front waterproof joints on the rear cover plate through non-metal hoses from three front waterproof joints on the front cover plate and are connected with outgoing line ends on three second transformers; the three-phase lead-out wire passes through in the other three preceding waterproof connector on the back shroud and is connected with the inlet wire end on the three second mutual-inductors in passing through the non-metallic hose from the other three preceding waterproof connector on the front shroud. The utility model discloses a mutual-inductor dilatation structure can install more mutual-inductors on the generator.
Description
Technical Field
The utility model relates to an internal-combustion engine drive is brushless synchronous generator for generating set especially indicates a mutual-inductor dilatation mounting structure of the well high voltage generator of many mutual-inductors or multiunit mutual-inductor.
Background
The existing middle-high voltage generator structures are all suitable for mounting small-size mutual inductors, and the mutual inductors configured in the past by a machine set matching manufacturer are all mounted in a high-voltage cabinet. Therefore, the space requirement on the outlet box of the generator is not high, and the outlet box can be provided with a next group of mutual inductors with smaller volume. However, as the requirement of customers on the electrical performance is higher and higher, the requirements on the precision and the quality of the transformer are also higher and higher, so that the coil, the iron core and the like in the transformer need to be increased in size to meet the requirement on the precision. In addition, customers have more and more requirements on the mutual inductors, which are mainly one group of measurement or one group of differential, at present, in order to ensure the safety and the use precision of the unit, the functional requirements on the mutual inductors are more and more, and a plurality of mutual inductors combine windings with multiple functions into one mutual inductor to simultaneously meet the requirements on measurement and differential, and the mutual inductors are often distributed in a mode of one group of measurement and two groups of differential. A plurality of windings in the transformer penetrate through the iron core of the transformer side by side, so that the size of the transformer is large.
A group of common multi-winding mutual inductors are arranged in a generator, and a group of common multi-winding mutual inductors are arranged in a high-voltage cabinet of the generator. However, in order to reduce the volume of the high-voltage cabinet or the volume of the mute box for installing the unit, a customer needs to install two sets of transformers or other transformers with similar functional volumes on the outlet box 11 of the generator. Due to the large size of the mutual inductor, the mutual inductor is basically used in medium and high voltage generators. The requirements of the medium-high voltage generator on creepage distance and discharge distance are high, the mutual distance of the transformers is large, if the distance between the incoming line end 13 of the multi-winding transformer 12 and the ground is more than 150mm, and the distance between the three-phase copper bars 14 is more than 200 mm. This requires a bulky generator outlet box 11 (see figure 1).
In conclusion, the existing generator cannot meet the requirement of installing a plurality of groups of transformers structurally.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide a mutual-inductor dilatation mounting structure of well high voltage generator, it has realized installing more mutual-inductors on the generator, has increased installation space moreover, can install the bigger mutual-inductor of volume, and can hold more coils in the big mutual-inductor of volume, can improve the precision of mutual-inductor to generating set's measurement accuracy and safety guarantee nature have been improved greatly.
The purpose of the utility model is realized like this: a mutual inductor expansion installation structure of a medium-high voltage generator comprises an outlet box arranged at the rear end of a generator body, wherein,
the outlet box comprises an outlet upper box and an outlet lower box; the outgoing line upper box is a rectangular box body formed by a supporting plate, a left wall, a right wall, a front wall and a rear wall; three first transformers and a drooping transformer are arranged on the supporting plate side by side; the wiring copper plates on the three first transformers are connected with three zero-phase outgoing lines led out from the machine body in a one-to-one correspondence manner;
a rectangular wire outlet hole is formed in the middle of the front wall of the wire outlet upper box, a front cover plate which is made of aluminum and provided with six cable penetrating holes is installed in the wire outlet hole, and a front waterproof joint is installed in each cable penetrating hole;
the upper part of the front wall of the outgoing line upper box is provided with three-phase copper bars, each three-phase copper bar is connected with an outgoing line cable, and the three outgoing line cables penetrate out of three front waterproof joints on the front cover plate in a one-to-one correspondence manner;
an arc-shaped hole communicated with the rear end of the machine body is formed in the lower portion of the front wall of the outgoing line upper box, so that three-phase outgoing lines led out from the machine body penetrate out of the other three front waterproof joints on the front cover plate in a one-to-one correspondence manner;
a mutual inductor box is arranged on the back of the machine body through four brackets and vibration damping pads, and comprises a rectangular mutual inductor box body and a mutual inductor box cover, wherein the rectangular mutual inductor box body consists of a bottom plate, a left side wall, a right side wall, a front side wall and a rear side wall;
a rectangular wire outlet hole is formed in the middle of the rear side wall of the mutual inductor box body, a rear cover plate which is made of aluminum materials and is provided with six cable penetrating holes is arranged in the wire outlet hole, a rear waterproof joint is arranged in each cable penetrating hole, the six rear waterproof joints are connected with the six front waterproof joints on the front cover plate of the outgoing upper box through six non-metal hoses in a one-to-one correspondence mode, and the three outgoing cables and the three-phase outgoing wires sequentially pass through the six non-metal hoses and the six rear waterproof joints in the one-to-one correspondence mode and enter the mutual inductor box;
at least three second transformers are arranged on a bottom plate of the transformer box body side by side, incoming line ends of the three second transformers are connected with three-phase outgoing lines entering the transformer box in a one-to-one correspondence mode, and outgoing line ends of the three second transformers are connected with three outgoing line cables entering the transformer box in a one-to-one correspondence mode;
a circle of rivet nuts are further fixed on the top of the mutual inductor box body;
the transformer box cover comprises a rectangular left vertical plate, a rectangular right vertical plate, an isosceles triangular front vertical plate, an isosceles triangular rear vertical plate and two top plates, the left vertical plate, the right vertical plate, the front vertical plate and the rear vertical plate form a rectangular box cover frame, and a circle of through holes are formed in a circle of rivet nuts, corresponding to the top of the transformer box body, on the lower portion of the box cover frame; the two top plates are covered on the left side and the right side of the top end of the box cover frame in a one-to-one correspondence mode to form a ridge shape.
The mutual inductor dilatation mounting structure of the medium-high voltage generator is characterized in that a threading support is further mounted in the middle of the front wall of the outgoing upper box, so that the three outgoing cables and the three-phase outgoing lines all enter six front waterproof joints in a one-to-one correspondence mode through the threading support.
The mutual inductor dilatation mounting structure of foretell medium-high voltage generator, wherein, every the three-phase copper bar all is the structure of falling the U-shaped, make three-phase copper bar with the interval of the back wall of case on being qualified for the next round of competitions is more than 160 mm.
The mutual inductor dilatation mounting structure of foretell medium-high voltage generator, wherein, every the support is bent into the type of falling U structure by the steel sheet preparation that thickness is 15mm, the support passes through welded fastening and makes the top surface of support be higher than the peak of fuselage on the fuselage.
In the capacity-expanding installation structure of the mutual inductor of the medium-high voltage generator, one cable chute is respectively installed beside each second mutual inductor in the mutual inductor box body, so that the three outgoing cables are respectively fixed on the three cable chutes in a one-to-one correspondence manner through nylon belts.
The mutual inductor dilatation mounting structure of the medium-high voltage generator is characterized in that a lug plate is welded at each of four corners of the mutual inductor box cover.
The utility model discloses a mutual-inductor dilatation mounting structure of well high voltage generator has following characteristics:
1. the backpack type mutual inductor box is additionally arranged on the machine body of the generator through the support, more mutual inductors are mounted on the generator, the mounting space is increased, the larger mutual inductor can be mounted, more coils can be accommodated in the large mutual inductor, the precision of the mutual inductor can be improved, and the measuring precision and the safety guarantee performance of the generator set are greatly improved
2. Because the mutual inductor that originally need install in the high-voltage board has been accommodated to the mutual inductor case, the volume of high-voltage board just can reduce like this, makes the volume of whole unit reduce, and is littleer to the installation space demand of unit, makes the unit can be applicable to more complicated environment. If the sound box is arranged in the sound box, the size of the sound box can be reduced, the occupied area is reduced, and the cost expenditure is reduced.
3. The outgoing line upper box is connected with the backpack type mutual inductor box through a non-metal hose (corrugated pipe), so that the cable is protected, and the safety of the cable is ensured; the first mutual inductor is placed on the supporting plate in the outgoing line upper box, so that the upper space in the outgoing line upper box is increased, and the safety is improved; and a cable chute is additionally arranged in the backpack type mutual inductor box, so that the protection safety of the outgoing cable is improved.
Drawings
FIG. 1 is a component layout diagram of a mid-outlet box of a prior art medium to high voltage generator;
fig. 2 is a perspective view of the mutual inductor expansion installation structure of the middle and high voltage generator of the present invention;
fig. 3 is a diagram showing the arrangement of components in the outlet box of the expansion installation structure of the transformer of the present invention;
fig. 4 is a schematic structural diagram of a transformer box in the expansion installation structure of the transformer of the present invention;
fig. 5 is a layout diagram of components in a transformer box in the capacity expansion mounting structure of the transformer of the present invention;
fig. 6 is a schematic structural diagram of a case cover of a mutual inductor in the capacity expansion installation structure of the mutual inductor.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 2 to 6, the transformer capacity expansion installation structure of the middle and high voltage generator of the present invention includes an outlet box installed at the rear end of the body 1 of the generator and a transformer box 4 installed on the back of the body 1.
The outlet box comprises an outlet upper box 3 and an outlet lower box 2; wherein the content of the first and second substances,
the outgoing line upper box 3 is a rectangular box body formed by a supporting plate, a left wall, a right wall, a front wall and a rear wall; three first transformers 31 and a drooping transformer 33 are arranged on the supporting plate side by side; the three first transformers 31 are arranged close to the rear wall, and the droop transformer 33 is arranged close to the front wall; the wiring copper plates 32 on the three first transformers 31 are connected with three zero-phase outgoing lines 51 led out from the machine body 1 in a one-to-one correspondence manner; the three first transformers 31 and one droop transformer 33 are transformers that need to be installed in the generator itself.
A rectangular wire outlet hole is formed in the middle of the front wall of the wire outlet upper box 3, a front cover plate 35 which is made of aluminum and provided with six cable penetrating holes is installed in the wire outlet hole, and a front waterproof joint 36 is installed in each cable penetrating hole; a threading bracket 34 is also arranged at the inner side of the front cover plate 35 in the middle of the front wall of the outgoing line upper box 3, and six through holes are formed in the threading bracket 34; the front cover plate 35 made of aluminum material is threaded without generating vortex, so that the integral outgoing line upper box 3 does not generate vortex;
three-phase copper bars 37 are arranged on the upper portion of the front wall of the outgoing line upper box 3, in order to ensure that the distance between the three-phase copper bars 37 and the rear wall of the outgoing line upper box 3 is more than 160mm, each three-phase copper bar 37 is bent into an inverted U shape, the overall strength is enhanced, and the electrical distance between the three-phase copper bars and a metal structural member cannot be influenced when a main cable is connected outwards; the three-phase copper bars 37 are respectively connected with one outgoing cable 6, and the three outgoing cables 6 correspondingly penetrate through the three through holes in the threading bracket 34 and then penetrate out of the three front waterproof joints 36 in the front cover plate 35;
an arc-shaped hole communicated with the rear end of the machine body 1 is formed in the lower portion of the front wall of the upper outgoing line box 3, so that three-phase outgoing lines 52 led out from the machine body 1 penetrate through the other three through holes in the threading support 34 one by one and then penetrate out of the other three front waterproof joints 36 in the front cover plate 35 of the upper outgoing line box 3;
the threading support 34 is used for fixing the routing direction of the outgoing line, so that the outgoing line is prevented from colliding with other parts, and the electric short circuit is prevented from being caused;
and other electric elements of the generator are arranged in the outlet lower box 2.
The transformer box 4 is arranged on the back of the machine body 1 through four brackets 40; four brackets 40 are installed in pairs of two on the front left and right sides and the rear left and right sides of the body 1; each support 40 is made of a steel plate with the thickness of 15mm and is bent into an inverted U-shaped structure, the supports 40 are fixed on the machine body 1 through welding, and the top surface of the welded support 4 is higher than the highest point of the machine body 1, so that the bottom of the transformer box 4 is guaranteed not to interfere with the machine body 1. In order to ensure that the whole stress of the transformer box 4 is uniform after installation, the bottom surface of the transformer box 4 needs to be parallel to the horizontal plane of the machine body 1, and therefore the top surface of the support 40 needs to be processed by taking the horizontal plane of the machine body 1 as a reference.
Since the transformer tank 4 contains electric components such as a transformer, and the influence of vibration on the electric components must be considered, a shock absorbing pad 40a is provided between the top surface of the bracket 40 and the bottom surface of the transformer tank 4 for shock absorption, and the shock absorbing pad 40a can bear a weight of 800kg, which is sufficient for meeting the weight requirement of the transformer tank 4.
The instrument transformer box 4 includes a rectangular instrument transformer box 41 constituted by a bottom plate 410, a left side wall 411, a right side wall 411 ', a front side wall 412 and a rear side wall 412', and an instrument transformer box cover 42.
A rectangular wire outlet hole is formed in the middle of the rear side wall 412' of the mutual inductor box body 41, a rear cover plate 43 which is made of aluminum and provided with six cable penetrating holes is arranged in the wire outlet hole, a rear waterproof joint 44 is arranged in each cable penetrating hole, the six rear waterproof joints 44 are connected with the six front waterproof joints 36 on the front cover plate 35 of the outgoing upper box 3 through six non-metal hoses 7 in a one-to-one correspondence mode, and the three outgoing cables 6 and the three-phase outgoing wires 52 sequentially pass through the six non-metal hoses 7 and the six rear waterproof joints 44 one by one to enter the mutual inductor box 4; the nonmetal flexible pipe 7 can be a corrugated pipe made of nylon, the inner diameter of the nonmetal flexible pipe 7 is slightly larger than the outer diameter of the outgoing cable 6 or the three-phase outgoing line 52, and the length of the nonmetal flexible pipe 7 is slightly larger than the distance from the front waterproof joint 36 to the rear waterproof joint 44, so that the cable can pass through smoothly and is protected; the back cover plate 43 made of aluminum material is threaded, so that no vortex is generated on the whole mutual inductor box 4;
at least three second transformers 45 are arranged on the bottom plate 410 of the transformer box 41 side by side, and the three second transformers 45 are transformers which are arranged more as required; the distances between the three second transformers 45 and the left side wall 411 and the right side wall 411 'are all 200mm, the distances between the three second transformers 45 and the front side wall 412 and the rear side wall 412' are all 300mm, and the wire inlet ends 451 on the three second transformers 45 are connected with the three-phase stator lead-out wires 52 entering the transformer box 4 in a one-to-one correspondence manner; the outlet terminals 452 of the three second transformers 45 are correspondingly connected with the three outlet cables 6 entering the transformer box 4; because the transformer box 41 is large, the three outgoing cables 6 are wound to the front sides of the three second transformers 45 from the waterproof joints 44 on the rear cover plate 43 in a one-to-one correspondence manner, and then are connected with the outgoing terminals 452 on the second transformers 45, the outgoing cables 6 in the transformer box 41 are long, and because the hardness of the outgoing cables 6 is not high, the outgoing cables 6 can rub against the transformer box 41, so that the situation of short circuit after the cables are broken is easily caused, therefore, one cable chute 46 is arranged beside each second transformer 45, and the three outgoing cables 6 are respectively fixed on the three cable chutes 46 in a one-to-one correspondence manner through nylon ribbons; the cable run 46 is made of a high pressure resistant non-metallic material;
because the volume of the transformer box 41 is large, in order to prevent the transformer box 41 from deforming, two rib plates 413 are respectively welded at four corners in the transformer box 41 for increasing the strength of the transformer box 41; the middle part of the left side wall 411 and the middle part of the right side wall 411' of the transformer box 41 are respectively provided with a shutter 414 for dissipating heat emitted by the second transformer 45;
a ring of rivet nuts 47 is also fixed on the top of the transformer tank 41 for mounting the transformer tank cover 42.
The transformer box cover 42 comprises a rectangular left vertical plate 421 and a rectangular right vertical plate 421 ', a front vertical plate 422 and a rear vertical plate 422' which are in an isosceles triangle shape, and two top plates 423, the left vertical plate 421, the right vertical plate 421 ', the front vertical plate 422 and the rear vertical plate 422' enclose a rectangular box cover frame, and a circle of through holes 424 are formed in a circle of rivet nuts 47 on the lower portion of the box cover frame, corresponding to the top of the transformer box body 41, and are used for being connected with the transformer box body 41 through bolts; the two top plates 423 cover the left side and the right side of the top end of the box cover frame in a one-to-one correspondence manner to form a ridge shape, and if condensed water or shower water exists, the water flows down along the inclined planes of the two top plates 423, so that the mutual inductor box cover 42 is not corroded due to the storage on the mutual inductor box cover 42. And the four corners of the transformer box cover 42 are respectively welded with a lug plate 48, so that the transformer box 4 can be conveniently carried and installed.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (6)
1. A mutual inductor expansion installation structure of a medium-high voltage generator comprises an outlet box arranged at the rear end of a generator body and is characterized in that,
the outlet box comprises an outlet upper box and an outlet lower box; the outgoing line upper box is a rectangular box body formed by a supporting plate, a left wall, a right wall, a front wall and a rear wall; three first transformers and a drooping transformer are arranged on the supporting plate side by side; the wiring copper plates on the three first transformers are connected with three zero-phase outgoing lines led out from the machine body in a one-to-one correspondence manner;
a rectangular wire outlet hole is formed in the middle of the front wall of the wire outlet upper box, a front cover plate which is made of aluminum and provided with six cable penetrating holes is installed in the wire outlet hole, and a front waterproof joint is installed in each cable penetrating hole;
the upper part of the front wall of the outgoing line upper box is provided with three-phase copper bars, each three-phase copper bar is connected with an outgoing line cable, and the three outgoing line cables penetrate out of three front waterproof joints on the front cover plate in a one-to-one correspondence manner;
an arc-shaped hole communicated with the rear end of the machine body is formed in the lower portion of the front wall of the outgoing line upper box, so that three-phase outgoing lines led out from the machine body penetrate out of the other three front waterproof joints on the front cover plate in a one-to-one correspondence manner;
a mutual inductor box is arranged on the back of the machine body through four brackets and vibration damping pads, and comprises a rectangular mutual inductor box body and a mutual inductor box cover, wherein the rectangular mutual inductor box body consists of a bottom plate, a left side wall, a right side wall, a front side wall and a rear side wall;
a rectangular wire outlet hole is formed in the middle of the rear side wall of the mutual inductor box body, a rear cover plate which is made of aluminum materials and is provided with six cable penetrating holes is arranged in the wire outlet hole, a rear waterproof joint is arranged in each cable penetrating hole, the six rear waterproof joints are connected with the six front waterproof joints on the front cover plate of the outgoing upper box through six non-metal hoses in a one-to-one correspondence mode, and the three outgoing cables and the three-phase outgoing wires sequentially pass through the six non-metal hoses and the six rear waterproof joints in the one-to-one correspondence mode and enter the mutual inductor box;
at least three second transformers are arranged on a bottom plate of the transformer box body side by side, incoming line ends of the three second transformers are connected with three-phase outgoing lines entering the transformer box in a one-to-one correspondence mode, and outgoing line ends of the three second transformers are connected with three outgoing line cables entering the transformer box in a one-to-one correspondence mode;
a circle of rivet nuts are further fixed on the top of the mutual inductor box body;
the transformer box cover comprises a rectangular left vertical plate, a rectangular right vertical plate, an isosceles triangular front vertical plate, an isosceles triangular rear vertical plate and two top plates, the left vertical plate, the right vertical plate, the front vertical plate and the rear vertical plate form a rectangular box cover frame, and a circle of through holes are formed in a circle of rivet nuts, corresponding to the top of the transformer box body, on the lower portion of the box cover frame; the two top plates are covered on the left side and the right side of the top end of the box cover frame in a one-to-one correspondence mode to form a ridge shape.
2. The mutual inductor capacity expansion mounting structure of the medium-high voltage generator as claimed in claim 1, wherein a threading support is further installed in the middle of the front wall of the outgoing upper box, so that the three outgoing cables and the three-phase outgoing lines all enter the six front waterproof joints in a one-to-one correspondence manner through the threading support.
3. The mutual inductor capacity expansion mounting structure of the medium-high voltage generator as claimed in claim 1, wherein each of the three-phase copper bars is in an inverted U-shaped structure, so that the distance between the three-phase copper bars and the rear wall of the outgoing line upper box is over 160 mm.
4. The mutual inductor capacity expansion mounting structure of the medium-high voltage generator as claimed in claim 1, wherein each of the brackets is made of a steel plate with a thickness of 15mm and bent into an inverted U-shaped structure, and the brackets are fixed on the machine body by welding and have top surfaces higher than the highest point of the machine body.
5. The transformer expansion mounting structure of the medium-high voltage generator according to claim 1, wherein a cable chute is installed in the transformer box beside each second transformer, so that three outgoing cables are respectively fixed on the three cable chutes in a one-to-one correspondence manner through nylon tapes.
6. The mutual inductor capacity expansion mounting structure of a medium-high voltage generator as claimed in claim 1, wherein four corners of the mutual inductor box cover are further welded with one lug plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525911.0U CN210327291U (en) | 2019-09-12 | 2019-09-12 | Mutual inductor expansion mounting structure of medium-high voltage generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525911.0U CN210327291U (en) | 2019-09-12 | 2019-09-12 | Mutual inductor expansion mounting structure of medium-high voltage generator |
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| Publication Number | Publication Date |
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| CN210327291U true CN210327291U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921525911.0U Active CN210327291U (en) | 2019-09-12 | 2019-09-12 | Mutual inductor expansion mounting structure of medium-high voltage generator |
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