CN112490800A

CN112490800A - One-way frequency conversion module for frequency conversion control device

Info

Publication number: CN112490800A
Application number: CN202011302286.0A
Authority: CN
Inventors: 闻伟; 赵海云
Original assignee: Nanjing Lubeis Control Technology Co ltd
Current assignee: Nanjing Lubeis Control Technology Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-03-12

Abstract

The invention discloses a unidirectional frequency conversion module for a frequency conversion control device, which comprises a multi-lamination bus bar, a metal supporting part body, an insulating accessory and an electricity-proof insulating block, wherein the metal supporting part body is arranged at the bottom of the multi-lamination bus bar, the multi-lamination bus bar is arranged at the top of the metal supporting part body, the insulating accessory is arranged at the outer side of the metal supporting part body and is arranged at the left side of the metal supporting part body, the unidirectional module achieves the effect of increasing the creepage distance between the multi-lamination bus bar and the metal supporting part body by controlling the length of the insulating accessory through the matching between a multi-lamination bus layer and the metal supporting part body as well as the insulating accessory, solves the problem that the creepage distance is difficult to control in the past, achieves the effect that the single-phase frequency conversion module is not influenced by the electric distance through the matching between the multi-lamination bus layer and the insulating accessory, thereby improving the structural compactness of the single-phase frequency conversion module and reducing the volume effect of the frequency conversion, the problem of easily receive electric interval influence and structure uncompacted bulky in the past is solved.

Description

One-way frequency conversion module for frequency conversion control device

Technical Field

The invention relates to the technical field of frequency conversion control, in particular to a one-way frequency conversion module for a frequency conversion control device.

Background

The mining variable frequency control device plays good speed regulation performance and energy saving and consumption reduction effects in mechanical equipment for underground mining, digging, transportation and the like of a coal mine and application of four large parts such as on-well ventilation, pressing, discharging, lifting and the like. Along with the continuous rising of the voltage and power grade of a mining variable frequency control device, the high-voltage insulation problem of a multi-laminated busbar is increasingly prominent, the contradiction between the necessary electrical spacing and the miniaturization of the volume of the variable frequency control device is increasingly excited, when a main circuit of the high-voltage high-power mining variable frequency control device is designed, if the multi-laminated busbar of a single-phase variable frequency module is unreasonably designed, the power devices are not compactly arranged, the utilization rate of an internal space is low, the integral volume of a frequency converter is large, the stray inductance of the busbar is overlarge, the peak overvoltage is easy to occur in the current conversion process, further the safety of the power devices is threatened, the normal operation of the system is influenced, the problems of system electromagnetic compatibility and the like are aggravated, the system is overheated, the occurrence of the peak overvoltage increases the switching loss of the, The intrusion of moisture causes the insulation to fail.

Disclosure of Invention

The present invention is directed to a unidirectional frequency conversion module for a frequency conversion control device, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an one-way frequency conversion module for frequency conversion controlling means, includes that many stromatolites are female arranges, the metal support portion body, insulating annex and prevent electric insulating block, the metal support portion body sets up in the female bottom of arranging of many stromatolites, the female top of arranging at the metal support portion body of many stromatolites, insulating annex sets up in the outside of the metal support portion body, and sets up in the left side of the metal support portion body, the female top equidistance of arranging of many stromatolites is provided with and prevents electric insulating block.

Preferably, the female arranging of stromatolite includes from top to bottom the positive and negative pole layer, interconnection layer, zero layer, interchange articulamentum, interlaminar insulation layer, the insulating coating of A, the insulating coating of B, the insulating strip, lead electrical pillar and insulating washer from top to bottom range upon range of, be equipped with the interlaminar insulation layer between every adjacent two-layer between positive and negative pole layer, interconnection layer, zero layer and the interchange articulamentum respectively, the insulating coating of A has been laid to the upper surface on positive and negative pole layer, the insulating coating of B has been laid to the lower surface on interchange articulamentum, each layer in positive and negative pole layer, interconnection layer and the interchange articulamentum all is equipped with the insulating strip and leads electrical pillar, all the riveting has a plurality of to lead electrical pillar on every layer among positive and negative pole layer, interconnection layer, zero layer and interchange articulamentum and other layers and.

Preferably, the metal supporting part bodies are arranged below the multi-stack busbar at intervals, and the insulating accessories are arranged on the outer sides of the metal supporting part bodies and are respectively connected with the multi-stack busbar and the metal supporting part bodies.

Preferably, one end of the alternating current connection layer adjacent to the insulating accessory is provided with a plurality of A connection terminals distributed at intervals, and the A connection terminals are connected with the insulating accessory.

Preferably, the a connection terminal includes: the straight part body extends out of the alternating current connecting layer and is positioned on the same plane with the alternating current connecting layer, and the bent part body is vertically connected with the straight part body and is connected with the insulating accessory.

Preferably, the bent part body and the insulating accessory are connected through a bolt.

Preferably, a B connection terminal is arranged at one end of the zero layer in the width direction, and two C connection terminals are arranged at one end of the positive and negative electrode layers in the width direction.

Preferably, the positive and negative electrode layers, the interconnection layer, the zero layer and the alternating current connection layer of the multi-laminated busbar are all formed by folding a red copper plate with the thickness of 1.5mm, and the surfaces of the red copper plate and the alternating current connection layer are all subjected to tinning treatment.

Preferably, the peripheral edges of the insulating coating layer A and the insulating coating layer B are processed by adopting a pressing edge sealing process, so that a fully-closed structure is formed between the insulating coating layer A and the insulating coating layer B.

Preferably, the roughness of the upper surface of the metal support member is required to be lower than 1.6um, and the flatness is required to be lower than 0.1 mm/m.

Compared with the prior art, the invention has the beneficial effects that:

1. this one-way module, through the cooperation between female layer of folding more and the metal support portion body and the insulating annex, reached the length of control insulating annex and increased the effect of the creepage distance between female row of folding more and the metal support portion body, solved the problem of difficult control creepage distance in the past.

2. This one-way module through the cooperation between female layer of folding more and the insulating annex, has reached and has made single-phase frequency conversion module needn't receive the electric distance influence, has improved single-phase frequency conversion module's compact structure degree from this, has reduced the effect of frequency conversion controlling means's volume, has solved and has easily received the electric distance influence and the not compact bulky problem of structure in the past.

3. This one-way module through the cooperation between the female row of folding more, has reached and to have made single-phase frequency conversion module be applicable to high-power frequency conversion controlling means's result of use, has solved in the past and has folded more female row of layer level too few, is not suitable for the problem that high-power frequency conversion controlling means used.

4. This one-way module through the cooperation between A connecting terminal and the insulating annex, has reached the female layer of many stromatolites and has arranged and be connected between other electrical components, has increased the electric interval between female row of many stromatolites and the electrical components, has increased creepage distance, has improved the female effect of arranging whole insulating properties of arranging of many stromatolites, has solved in the past be not convenient for and the problem that insulating properties is weak with being connected between other electrical components.

5. This one-way module, through leading electrical pillar, the cooperation between positive and negative pole layer, interconnection layer, zero layer and the interchange articulamentum, reached the loop area that the female internal current of arranging of many stromatolites formed, reduced the female effect of arranging stray inductance of arranging of many stromatolites, solved and have had stray inductance's problem between the electrical components in the past.

6. This one-way module, through the female cooperation between arranging and the metal support portion body of many stromatolites, reached and be convenient for set up the water cooling unit on the metal support portion body to electrical components to arranging on the multi-stromatolites carries out radiating effect, has solved and has not set up the problem of water cooling unit and thermal diffusivity in the past.

7. This one-way module, through the cooperation between A insulating coating and the insulating coating of B, reached and prevented that to lead to the female effect that insulating properties descends that arranges of many stromatolites because of dust, moisture enter into female arranging of many stromatolites, solved in the past because of dust, moisture enter into the female problem that leads to insulating properties to descend that arranges of many stromatolites.

8. This one-way module, through the cooperation between each part, reached that structural design is compact and insulating properties is good still have the heat dissipation and increase the effect of water cooling unit, solved bulky and insulating properties weak in the past and can not in time dispel the heat easily burn the problem of electrical components.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a front view of the overall structure of the present invention;

FIG. 4 is a front view of a multi-stack busbar according to the present invention;

fig. 5 is a schematic exploded perspective view of a multi-stack busbar according to the present invention.

In the figure: the unidirectional frequency conversion module 110, the multi-stack busbar 111, the positive and negative electrode layers 1111, the C connecting terminal 11111, the interconnection layer 1112, the zero layer 1113, the B connecting terminal 11131, the alternating current connecting layer 1114, the A connecting terminal 11141, the straight part 11142, the bent part 11143, the interlayer insulating layer 1115, the A insulating coating 1116, the B insulating coating 1117, the insulating strip 1118, the conductive post 1119, the insulating washer 1120, the metal supporting part 112, the insulating accessory 113 and the electricity-proof insulating block 114.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a unidirectional frequency conversion module for a frequency conversion control device comprises a multi-lamination busbar 111, a metal supporting part 112, an insulating accessory 113 and an electricity-proof insulating block 114, wherein the metal supporting part 112 is arranged at the bottom of the multi-lamination busbar 111, the multi-lamination busbar 111 is arranged at the top of the metal supporting part 112, the insulating accessory 113 is arranged at the outer side of the metal supporting part 112 and is arranged at the left side of the metal supporting part 112, the electricity-proof insulating block 114 is arranged at equal intervals at the top of the multi-lamination busbar 111, the multi-lamination busbar 111 comprises a positive electrode layer 1111, an interconnection layer 1112, a zero layer 1113, an alternating current connecting layer 1114, an interlayer insulating layer 1115, an A insulating coating layer 1116, a B insulating coating layer 1117, an insulating strip 1118, a conductive column 1119 and an insulating washer 1120 which are sequentially laminated from top to bottom, and interlayer insulating layers are respectively arranged between every two adjacent layers among the positive electrode layer 1111, the interconnection layer 1112, the zero layer 1113 and the, an insulation coating layer 1116A is laid on the upper surface of the positive and negative electrode layer 1111, an insulation coating layer 1117B is laid on the lower surface of the alternating current connecting layer 1114, each of the positive and negative electrode layer 1111, the interconnection layer 1112 and the alternating current connecting layer 1114 is provided with an insulation bar 1118 and a conductive post 1119, each of the positive and negative electrode layer 1111, the interconnection layer 1112, the zero layer 1113 and the alternating current connecting layer 1114 is riveted with a plurality of conductive posts 1119, wherein a plurality of electrically conductive posts 1119 on every layer pass through insulating washer 1120 electrical isolation with other layers, metal support portion body 112 interval sets up the below of arranging 111 in the stromatolite, insulating annex 113 sets up the outside of metal support portion body 112 and is connected with stromatolite mother 111 and metal support portion body 112 respectively, the one end of exchanging connecting layer 1114 neighbouring insulating annex 113 has a plurality of interval distribution's a connecting terminal 11141, a connecting terminal 11141 is connected with insulating annex 113, a connecting terminal 11141 includes: the flat part 11142, the flat part 11142 extends from the AC connecting layer 1114 and is positioned on the same plane with the AC connecting layer 1114, the bent part 11143 is vertically connected with the flat part 11142, the bent part 11143 is connected with the insulating accessory 113 through bolts, one end of the zero layer 1113 along the width direction is provided with a B connecting terminal 11131, one end of the positive and negative layers 1111 along the width direction is provided with two C connecting terminals 11111 distributed at intervals, the positive and negative layers 1111, the interconnection layer 1112, the zero layer 1113 and the AC connecting layer 1114 of the multi-layer bus 111 are all made of red copper plates with the thickness of 1.5mm and are shown to be subjected to tin plating treatment, the outer peripheral edges of the A insulating coating layer 1116 and the B insulating coating layer 1117 are subjected to edge sealing treatment by pressing, so that a totally closed structure is formed between the A insulating coating layer 1117 and the B insulating coating layer 1117, the upper surface of the metal supporting part 112 is required to be lower than 1.6um roughness, the flatness requirement is less than 0.1 mm/m.

The working principle is as follows: the unidirectional module is reasonable and tense in structural design, convenient to mount and dismount, and comprises a multi-lamination busbar 111, a metal supporting part body 112, an insulating accessory 113 and an electricity-proof insulating block 114, wherein the metal supporting part body 112 is arranged at the bottom of the multi-lamination busbar 111, the multi-lamination busbar 111 is arranged at the top of the metal supporting part body 112, the insulating accessory 113 is arranged on the outer side of the metal supporting part body 112 and on the left side of the metal supporting part body 112, the electricity-proof insulating blocks 114 are arranged at the tops of the multi-lamination busbar 111 at equal intervals, and the use process and the use method are finally carried out after the unidirectional module is mounted; the use method I comprises the following steps: the method is characterized in that an insulating accessory 113 is additionally arranged between a multi-laminated busbar 111 and a metal supporting part body 112, the creepage distance between the multi-laminated busbar 111 and the metal supporting part body 112 is increased by controlling the length of the insulating accessory 113, and further, the distance between the multi-laminated busbar 111 and the metal supporting part body 112 is reduced to the thickness of the insulating accessory, so that a single-phase frequency conversion module is not influenced by the electric distance, the structural compactness of the single-phase frequency conversion module is improved, the volume of a frequency conversion control device is reduced, in addition, the number of layers of the multi-laminated busbar 111 is increased to four layers, and the single-phase frequency conversion module can be suitable for a high-power frequency conversion; the use method II comprises the following steps: one end of the insulating accessory 113 is provided with a plurality of A connecting terminals 11141 which are distributed at intervals, the A connecting terminals 11141 are connected with the insulating accessory 113, so that the multi-layer busbar 111 is connected with the insulating accessory 113 and other electrical elements conveniently, one end of the zero layer 1113 in the width direction is provided with a B connecting terminal 11131, one end of the positive and negative electrode layers 1111 in the width direction is provided with two C connecting terminals 11111 which are distributed at intervals, so that the multi-layer busbar 111 is connected with other electrical elements conveniently, and the multi-layer busbar 111 further comprises: each of the insulating strips 1118, the positive and negative electrode layers 1111, the interconnection layer 1112 and the alternating current connection layer 1114 is provided with the insulating strips 1118, so that the electrical distance between the multi-stack busbar 111 and an electrical element is increased, the creepage distance is increased, and the overall insulating performance of the multi-stack busbar 111 is improved; each of the positive electrode layer 1111, the negative electrode layer 1111, the interconnection layer 1112, the zero layer 1113 and the alternating current connection layer 1114 is riveted with a plurality of conductive poles 1119, wherein the conductive poles 1119 on each layer are electrically isolated from other layers by insulating gaskets 1120, so that the connection relationship between the multi-stack busbar 111 and corresponding electrical equipment elements can be cut off by the insulating gaskets 1120, the loop area formed by the internal current of the multi-stack busbar 111 is reduced, and the stray inductance of the multi-stack busbar 111 is reduced; the using method comprises the following steps: the positive and negative electrode layers 1111, the interconnection layer 1112, the zero layer 1113 and the alternating current connection layer 1114 of the multi-laminated busbar 111 are all formed by folding a red copper plate with the thickness of 1.5mm, the surfaces of the red copper plate are all subjected to tinning treatment, the thickness of the plating layer is more than 5 mu m, the oxidation resistance of the red copper plate is improved, the roughness requirement of the upper surface of the metal supporting part 112 is lower than 1.6 mu m-, and the flatness requirement is lower than 0.1 mm/m. Therefore, a good contact effect can be achieved between the electrical element and the metal supporting part body 112, and the metal supporting part body 112 is convenient to be provided with a water cooling unit so as to dissipate the heat of the electrical element on the multi-layer bus bar 111; the using method is as follows: the peripheral edges of the insulation coating layer 1116 and the insulation coating layer 1117A are processed by adopting a pressing edge sealing process, so that a fully-closed structure is formed between the insulation coating layer 1116 and the insulation coating layer 1117B, and the fully-closed structure is formed between the insulation coating layer 1116 and the insulation coating layer 1117B, so that the reduction of the insulation performance of the multi-laminated busbar 111 caused by the fact that dust and moisture enter the multi-laminated busbar 111 is prevented, the dust and moisture can be prevented from entering the multi-laminated busbar 111, and the insulation performance of the multi-laminated busbar 111 is improved; the one-way module is compact in structure, good in insulativity and high in practicability.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A one-way frequency conversion module for a frequency conversion control device comprises a multi-laminated busbar (111), a metal supporting part body (112), an insulating accessory (113) and an electricity-proof insulating block (114), and is characterized in that: the metal supporting part body (112) is arranged at the bottom of the multi-lamination busbar (111), the multi-lamination busbar (111) is arranged at the top of the metal supporting part body (112), the insulating accessory (113) is arranged on the outer side of the metal supporting part body (112) and arranged on the left side of the metal supporting part body (112), and the electricity-proof insulating blocks (114) are arranged on the top of the multi-lamination busbar (111) at equal intervals.

2. A unidirectional frequency conversion module for a frequency conversion control device according to claim 1, wherein: multi-lamination busbar (111) comprises a positive and negative electrode layer (1111), an interconnection layer (1112), a zero layer (1113), an alternating current connecting layer (1114), an interlayer insulating layer (1115), an A insulating coating layer (1116), a B insulating coating layer (1117), an insulating strip (1118), a conductive column (1119) and an insulating gasket (1120) which are sequentially stacked from top to bottom, wherein the interlayer insulating layer (1115) is arranged between every two adjacent layers of the positive and negative electrode layer (1111), the interconnection layer (1112), the zero layer (1113) and the alternating current connecting layer (1114), the A insulating coating layer (1116) is paved on the upper surface of the positive and negative electrode layer (1111), the B insulating coating layer (1117) is paved on the lower surface of the alternating current connecting layer (1114), each layer of the positive and negative electrode layer (1111), the interconnection layer (1112) and the alternating current connecting layer (1114) is provided with the insulating strip (1118) and the conductive column (1119), and the positive and negative electrode layer (1111), A plurality of conductive posts (1119) are riveted on each of the interconnection layer (1112), the zero layer (1113) and the alternating current connection layer (1114), wherein the plurality of conductive posts (1119) on each layer are electrically isolated from other layers through insulating gaskets (1120).

3. A unidirectional frequency conversion module for a frequency conversion control device according to claim 1, wherein: the metal supporting part body (112) is arranged below the multi-lamination busbar (111) at intervals, and the insulating accessory (113) is arranged on the outer side of the metal supporting part body (112) and is respectively connected with the multi-lamination busbar (111) and the metal supporting part body (112).

4. A unidirectional frequency conversion module for a frequency conversion control device according to claim 2, wherein: one end of the alternating current connection layer (1114) adjacent to the insulating accessory (113) is provided with a plurality of A connection terminals (11141) distributed at intervals, and the A connection terminals (11141) are connected with the insulating accessory (113).

5. A unidirectional frequency conversion module for a frequency conversion control device according to claim 2, wherein: the A connection terminal (11141) includes: the insulation accessory comprises a straight part body (11142), a bent part body (11143) and an insulation accessory (113), wherein the straight part body (11142) extends from the alternating current connection layer (1114) and is positioned on the same plane with the alternating current connection layer (1114), the bent part body (11143) is vertically connected with the straight part body (11142), and the bent part body (11143) is connected with the insulation accessory (113).

6. A unidirectional frequency conversion module for a frequency conversion control device according to claim 5, characterized in that: the bent part (11143) is connected with the insulating accessory (113) through a bolt.

7. A unidirectional frequency conversion module for a frequency conversion control device according to claim 2, wherein: and one end of the zero layer (1113) in the width direction is provided with a B connecting terminal (11131), and one end of the positive and negative electrode layer (1111) in the width direction is provided with two C connecting terminals (11111) which are distributed at intervals.

8. A unidirectional frequency conversion module for a frequency conversion control device according to claim 2, wherein: the positive and negative electrode layers (1111), the interconnection layer (1112), the zero layer (1113) and the alternating current connection layer (1114) of the multi-laminated busbar (111) are all formed by folding a red copper plate with the thickness of 1.5mm, and the surfaces of the red copper plate and the alternating current connection layer are all subjected to tinning treatment.

9. A unidirectional frequency conversion module for a frequency conversion control device according to claim 2, wherein: the outer peripheral edges of the A insulating coating layer (1116) and the B insulating coating layer (1117) are processed by adopting a pressing edge sealing process, so that a fully-closed structure is formed between the A insulating coating layer (1116) and the B insulating coating layer (1117).

10. A unidirectional frequency conversion module for a frequency conversion control device according to claim 1, wherein: the roughness requirement of the upper surface of the metal supporting part (112) is lower than 1.6um, and the flatness requirement is lower than 0.1 mm/m.