CN116033715A - Insulating cooling system in mining high-voltage frequency conversion all-in-one - Google Patents
Insulating cooling system in mining high-voltage frequency conversion all-in-one Download PDFInfo
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- CN116033715A CN116033715A CN202211733794.3A CN202211733794A CN116033715A CN 116033715 A CN116033715 A CN 116033715A CN 202211733794 A CN202211733794 A CN 202211733794A CN 116033715 A CN116033715 A CN 116033715A
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Abstract
The invention provides an insulating cooling system in a mining high-voltage frequency conversion integrated machine, which comprises a supporting plate and a positioning groove arranged on the supporting plate, wherein a ceramic water cooling plate is arranged in the positioning groove, and a circulating cooling water channel is arranged in the ceramic water cooling plate; the ceramic water cooling plate is provided with a plurality of wire holes positioned at the outer side of the circulating cooling water channel in a preset mode; the ceramic water cooling plate is provided with an electrical component which is fixed on the wire holes through fasteners and is arranged along the circulating cooling water channel; the condition that heat dissipation exists twice when carrying out heat dissipation in the prior art is improved.
Description
Technical Field
The invention relates to the field of cooling equipment of variable frequency integrated machines, in particular to an insulating cooling system in a mining high-voltage variable frequency integrated machine.
Background
Electric equipment units such as power devices in the 10kV mining high-voltage frequency conversion integrated machine generate a large amount of heat in the operation process, and heat needs to be quickly dissipated to ensure normal operation; and the electric gap is at least more than 100mm under the voltage level of 10kV specified in the standard GB/T3836.4-2021; chinese patent CN111740565a discloses an integral water cooling device for cascaded inverters, which comprises an integral water cooling plate, a connection copper bar and a plurality of power unit modules, wherein an insulating heat conduction conversion plate is fixed on the heat absorbing surface of the integral water cooling plate, the insulating heat conduction conversion plate is made of ceramic material, and the power unit modules are fixed on the insulating heat conduction conversion plate; the part of the integrated water cooling plate, which is not provided with the insulating heat conduction conversion plate, is covered with an insulating protection plate, and heat generated by the work of the power unit module is transferred to the integrated water cooling plate through the insulating heat conduction conversion plate. According to the cascade inverter integrated water cooling device, through the arrangement of the insulating heat conduction conversion plate made of ceramic materials, heat transfer is achieved, and electric isolation between the power unit module and the integrated water cooling plate is achieved.
The above patent proposes that an integrated water cooling plate and an insulating heat conduction conversion plate are adopted to exchange heat, and heat generated by a power unit module is directly exchanged through the insulating heat conduction conversion plate, and the insulating heat conduction conversion plate is made of ceramic materials, but two heat exchanges exist on a specific heat dissipation and heat exchange path, so that heat is easily accumulated on the insulating heat conduction conversion plate, and heat is not quickly exchanged, so that heat dissipation efficiency is reduced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an insulation cooling system in a mining high-voltage frequency conversion integrated machine, which solves the problem that heat is exchanged and radiated twice when the heat is radiated in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an insulation cooling system in a mining high-voltage frequency conversion integrated machine comprises a supporting plate and a positioning groove formed in the supporting plate, wherein a ceramic water cooling plate is arranged in the positioning groove, and a circulating cooling water channel is arranged in the ceramic water cooling plate; the ceramic water cooling plate is provided with a plurality of wire holes positioned at the outer side of the circulating cooling water channel in a preset mode; the ceramic water cooling plate is provided with an electric component, the electric component is fixed on the wire holes through fasteners, and the electric component is arranged along the circulating cooling water channel.
Preferably, the electrical assembly comprises a plurality of groups of power devices which are arranged on the ceramic water cooling plate at intervals, and a first insulating shell is sleeved around each power device; an insulating bracket component arranged on the ceramic water cooling plate is arranged between two adjacent groups of power devices, and a driving power supply device is arranged on the insulating bracket component; the ceramic water cooling plate is arranged on the power device, the ceramic water cooling plate is provided with a plurality of rectifying devices, and a second insulating shell is sleeved around each rectifying device.
Preferably, the materials of the first insulating housing, the second insulating housing and the insulating bracket component are all F881 insulating materials.
Preferably, a first minimum electric gap is arranged between two adjacent power devices, and a second minimum electric gap is arranged between each power device and the ceramic water cooling plate; and a third minimum electric gap is arranged between two adjacent driving power supply devices, and a fourth minimum electric gap is arranged between each driving power supply device and the ceramic water cooling plate.
Preferably, the first minimum electrical gap is 114mm, the second minimum electrical gap is 115mm, the third minimum electrical gap is 135mm, and the fourth minimum electrical gap is 117mm.
Preferably, insulating sealant is smeared between the first insulating shell, the second insulating shell, the insulating bracket component and the ceramic water cooling plate.
Preferably, the insulating bracket component comprises an insulating base plate fixed on the water-cooled ceramic plate, two side plates arranged on the insulating base plate at intervals, a bottom plate attached to the insulating base plate and a middle plate arranged in parallel with the bottom plate at intervals are fixedly arranged at the bottoms of the two side plates; the bottom plate and the middle plate are both used for installing the driving power supply device.
Preferably, the first insulating housing and the second insulating housing have the same structure, each of which comprises a housing body, wherein a first mounting groove is formed in the housing body, and a limiting step positioned on one side of the long side wall of the housing body is arranged in the first mounting groove; the short side walls of the shell body are provided with notch structures; and a plurality of mounting holes uniformly distributed along the length direction are formed in the limiting steps.
Preferably, the ceramic water cooling plate is provided with a water inlet communicated with one end of the circulating cooling water channel and a water outlet communicated with the other end of the circulating cooling water channel, and the water inlet and the water outlet are both G1 threaded holes.
Preferably, the material of the supporting plate is high-strength carbon steel, and the material of the ceramic water-cooling plate is alumina ceramic.
Compared with the prior art, the invention has the following beneficial effects:
after the circulating cooling water channel is directly arranged in the ceramic water cooling plate to circulate cooling water, the electric component arranged on the ceramic water cooling plate directly exchanges heat with the ceramic water cooling plate to dissipate heat, so that the quantity of intermediate heat exchange media can be reduced; meanwhile, through presetting the wire holes on the ceramic water cooling plate and avoiding the circulating cooling water channel, the structural stability of the ceramic water cooling plate can be ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded structure of an embodiment of the present invention;
FIG. 3 is a schematic view of a ceramic water-cooled plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first insulating shell and a second insulating shell according to an embodiment of the present invention;
FIG. 5 is a schematic view of an insulating bracket assembly according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an electrical gap according to an embodiment of the present invention;
in the drawing the view of the figure,
the support plate 1, the positioning groove 2, the ceramic water cooling plate 3, the circulating cooling water channel 30, the wire hole 31, the water inlet 32, the water outlet 33, the electric component 4, the power device 41, the first insulating housing 42, the insulating bracket component 43, the insulating pad 431, the side plate 432, the bottom plate 433, the middle plate 434, the driving power device 44, the rectifying device 45, the second insulating housing 46, the housing body 47, the first mounting groove 470, the limit step 471, the notch structure 472, the mounting hole 473, the first minimum electric gap 5, the second minimum electric gap 6, the third minimum electric gap 7, and the fourth minimum electric gap 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
As shown in fig. 1 to 6, in the embodiment of the present invention, an insulation cooling system in a mining high-voltage frequency conversion all-in-one machine is proposed, the insulation cooling system is installed in a mining high-voltage frequency conversion all-in-one machine, corresponding electrical equipment units are installed and heat dissipation is achieved, in the prior art, a water cooling plate is generally adopted to exchange heat to the ceramic plate, and then the temperature of the electrical equipment units is cooled through the ceramic plate, and as a result, heat exchange medium is added in the middle, so that the heat exchange efficiency is lower, in order to improve the heat exchange efficiency and reduce the heat exchange transmission medium as much as possible, and the heat dissipation effect is improved, in this embodiment, an improved insulation cooling system is proposed, which specifically includes a support plate 1 and a positioning groove 2 formed on the support plate 1, wherein a ceramic water cooling plate 3 is installed in the positioning groove 2, a circulating cooling water channel 30 is provided in the ceramic water cooling plate 3, and the support plate 1 is made of high-strength carbon steel, and the ceramic water cooling plate 3 is made of alumina ceramic, so that after the ceramic water cooling plate 3 is installed in the positioning groove 2, an integral structure can be formed with the support plate 1, and thus the load-bearing strength of the ceramic water cooling plate 3 is improved through the support plate 1, so that the heat exchange efficiency is improved, and the heat exchange medium is directly and the heat exchange medium is reduced, and the heat exchange medium is fixed, and the heat is fixed in the concrete and the installation mode and the installation plate is fixed in the water cooling plate through the high-pressure medium through the water cooling machine, and the water cooling machine is fixed through the water cooling machine, and the water cooling machine is fixed through the water and the fixing and the high-pressure, and the machine; meanwhile, a plurality of flange fixing holes uniformly distributed along the circumferential direction are formed in the supporting plate 1, and the supporting plate 1 is fixedly installed in the mining high-voltage frequency conversion integrated machine through the flange fixing holes.
Meanwhile, in order to facilitate the direct and fixed mounting of the electrical equipment unit on the ceramic water-cooling plate 3 and avoid the damage of the ceramic water-cooling plate 3, a plurality of wire holes 31 positioned outside the circulating cooling water channel 30 are preset on the ceramic water-cooling plate 3, and the specific wire holes 31 are arranged to avoid the circulating cooling water channel 30, so that the connection reliability of the wire holes 31 can be ensured.
Specifically, install electrical component 4 on the ceramic water-cooling board 3, electrical component 4 passes through the fastener to be fixed on the wire hole 31, electrical component 4 is along circulating cooling water course 30 sets up, through after pouring into circulating cooling water to circulating cooling water course 30, can let the heat that electrical component 4 produced directly form the heat exchange and dispel the heat through ceramic water-cooling board 3 to improve the radiating effect, reduce the transfer chain of heat transfer intermediate medium, and directly adopt ceramic water-cooling board 3 to exchange heat has better heat transfer coefficient.
In order to ensure that the electrical component 4 mounted on the ceramic water-cooling plate 3 has good insulativity and can perform good heat dissipation under the condition that the volume is minimized by paving according to the ceramic water-cooling plate 3, the electrical component 4 comprises a plurality of groups of power devices 41 which are mounted on the ceramic water-cooling plate 3 at intervals, and a first insulating shell 42 is sleeved around each power device 41; an insulating bracket component 43 mounted on the ceramic water cooling plate 3 is arranged between two adjacent groups of power devices 41, and a driving power device 44 is mounted on the insulating bracket component 43; the ceramic water cooling plate 3 is provided with a plurality of rectifying devices 45 positioned on one side of the power device 41, and a second insulating shell 46 is sleeved around each rectifying device 45; isolation of the drive power device 44 is achieved through the insulating support assembly 43, the first insulating housing 42 coats the power device 41, adjacent insulation can be achieved after the second insulating housing 46 coats the rectifying device 45, and insulation isolation is achieved from the nearest conductive grounding point.
Specifically, in order to ensure good insulation effect and good supporting strength, the materials of the first insulation housing 42, the second insulation housing 46 and the insulation bracket assembly 43 are all F881 insulation materials.
Specifically, there is a first minimum electrical gap 5 between two adjacent power devices 41, and a second minimum electrical gap 6 between each power device 41 and the ceramic water-cooled plate 3; likewise, a third minimum electric gap 7 is arranged between two adjacent driving power supply devices 44, a fourth minimum electric gap 8 is arranged between each driving power supply device 44 and the ceramic water cooling plate 3, and the minimum electric gap is more than 100mm according to standard requirements so as to meet insulation and isolation requirements; whereby the first minimum electrical gap 5 is 114mm, the second minimum electrical gap 6 is 115mm, the third minimum electrical gap 7 is 135mm, and the fourth minimum electrical gap 8 is 117mm under the influence of the first insulating housing 42, the second insulating housing 46, and the insulating holder assembly 43; the ceramic water-cooling plate can meet the specified minimum gap size requirement, can be reasonably paved on the ceramic water-cooling plate 3, and improves the heat dissipation effect and the insulation effect under the condition of reducing the volume as much as possible.
The insulating sealant is applied between the first insulating housing 42, the second insulating housing 46, the insulating bracket assembly 43 and the ceramic water cooling plate 3, so that the possibility that devices installed inside are conducted through gaps is avoided, and the length of the minimum electric gap is increased after plugging.
Specifically, the insulating bracket assembly 43 includes an insulating pad 431 fixed on the water-cooled ceramic plate and two side plates 432 installed on the insulating pad 431 at intervals, the bottom of each side plate 432 is fixedly provided with a bottom plate 433 attached to the insulating pad 431 and a middle plate 434 parallel to the bottom plate 433 and arranged at intervals, and the driving power devices 44 can be installed through the bottom plate 433 and the middle plate 434 arranged at intervals, so that the number of the driving power devices 44 can be increased as much as possible, and insulation isolation requirements and heat dissipation requirements are met.
Specifically, the first insulating housing 42 and the second insulating housing 46 have the same structure, each include a housing body 47, a first mounting groove 470 is formed in the housing body 47, a limiting step 471 located on one side of a long sidewall of the housing body 47 is disposed in the first mounting groove 470, the limiting step 471 can limit an embedded device, and a plurality of mounting holes 473 uniformly distributed along a length direction are formed in the limiting step 471, the whole structure is fixedly mounted on the ceramic water-cooling plate 3 through the mounting holes 473, and the embedded device directly contacts the ceramic water-cooling plate 3, so as to ensure a good heat dissipation effect; meanwhile, notch structures 472 are formed in the short side walls of the housing body 47, and the notch structures 472 are arranged to facilitate pulling when the internal devices are taken, placed and installed.
Specifically, a water inlet 32 communicated with one end of the circulating cooling water channel 30 and a water outlet 33 communicated with the other end of the circulating cooling water channel 30 are formed in the ceramic water cooling plate 3, the water inlet 32 and the water outlet 33 are G1 threaded holes, the whole insulating cooling system is mounted on a mining high-voltage frequency conversion integrated machine, and the water cooling system is connected into a circulating water channel through the water inlet 32 and the water outlet 33 to realize circulating cooling and heat dissipation of water in the ceramic water cooling plate 3.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. An insulating cooling system in mining high-voltage frequency conversion all-in-one, its characterized in that: the device comprises a supporting plate (1) and a positioning groove (2) formed in the supporting plate (1), wherein a ceramic water cooling plate (3) is arranged in the positioning groove (2), and a circulating cooling water channel (30) is formed in the ceramic water cooling plate (3);
a plurality of wire holes (31) positioned at the outer side of the circulating cooling water channel (30) are preset on the ceramic water cooling plate (3);
the ceramic water cooling plate (3) is provided with an electric component (4), the electric component (4) is fixed on the wire holes (31) through fasteners, and the electric component (4) is arranged along the circulating cooling water channel (30).
2. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 1, wherein the insulation cooling system is characterized in that: the electrical assembly (4) comprises a plurality of groups of power devices (41) which are arranged on the ceramic water cooling plate (3) at intervals, and a first insulating shell (42) is sleeved around each power device (41);
an insulating bracket component (43) arranged on the ceramic water cooling plate (3) is arranged between two adjacent groups of power devices (41), and a driving power device (44) is arranged on the insulating bracket component (43);
the ceramic water cooling plate is characterized by further comprising a plurality of rectifying devices (45) which are arranged on the ceramic water cooling plate (3) and positioned on one side of the power device (41), and a second insulating shell (46) is sleeved around each rectifying device (45).
3. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 2, wherein the insulation cooling system is characterized in that: the first insulating housing (42), the second insulating housing (46) and the insulating bracket component (43) are made of F881 insulating materials.
4. An insulation cooling system in a mining high-voltage frequency conversion integrated machine according to claim 3, wherein: a first minimum electric gap (5) is arranged between two adjacent power devices (41), and a second minimum electric gap (6) is arranged between each power device (41) and the ceramic water cooling plate (3);
a third minimum electrical gap (7) is arranged between two adjacent driving power supply devices (44), and a fourth minimum electrical gap (8) is arranged between each driving power supply device (44) and the ceramic water cooling plate (3).
5. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 4, wherein the insulation cooling system comprises the following components: the first minimum electrical gap (5) is 114mm, the second minimum electrical gap (6) is 115mm, the third minimum electrical gap (7) is 135mm, and the fourth minimum electrical gap (8) is 117mm.
6. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to any one of claims 2 to 5, wherein the insulation cooling system is characterized in that: insulating sealant is smeared between the first insulating shell (42), the second insulating shell (46) and the insulating bracket component (43) and the ceramic water cooling plate (3).
7. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 6, wherein the insulation cooling system comprises the following components: the insulating bracket assembly (43) comprises an insulating base plate (431) fixed on the water-cooled ceramic plate and two side plates (432) arranged on the insulating base plate (431) at intervals, wherein a bottom plate (433) attached to the insulating base plate (431) and a middle plate (434) arranged in parallel at intervals relative to the bottom plate (433) are fixedly arranged at the bottoms of the two side plates (432);
the bottom plate (433) and the middle plate (434) are both used for installing the driving power supply device (44).
8. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 6, wherein the insulation cooling system comprises the following components: the first insulating shell (42) and the second insulating shell (46) have the same structure and comprise a shell body (47), a first mounting groove (470) is formed in the shell body (47), and a limit step (471) positioned on one side of the long side wall of the shell body (47) is arranged in the first mounting groove (470);
the short side walls of the shell body (47) are provided with notch structures (472);
and a plurality of mounting holes (473) uniformly distributed along the length direction are formed in the limiting steps (471).
9. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 6, wherein the insulation cooling system comprises the following components: the ceramic water cooling plate (3) is provided with a water inlet (32) communicated with one end of the circulating cooling water channel (30) and a water outlet (33) communicated with the other end of the circulating cooling water channel (30), and the water inlet (32) and the water outlet (33) are G1 threaded holes.
10. The insulation cooling system in the mining high-voltage frequency conversion integrated machine according to claim 1, wherein the insulation cooling system is characterized in that: the material of backup pad (1) is high strength carbon steel, the material of ceramic water-cooling board (3) is aluminium oxide pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211733794.3A CN116033715A (en) | 2022-12-30 | 2022-12-30 | Insulating cooling system in mining high-voltage frequency conversion all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211733794.3A CN116033715A (en) | 2022-12-30 | 2022-12-30 | Insulating cooling system in mining high-voltage frequency conversion all-in-one |
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| Publication Number | Publication Date |
|---|---|
| CN116033715A true CN116033715A (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211733794.3A Pending CN116033715A (en) | 2022-12-30 | 2022-12-30 | Insulating cooling system in mining high-voltage frequency conversion all-in-one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116033715A (en) |
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2022
- 2022-12-30 CN CN202211733794.3A patent/CN116033715A/en active Pending
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