CN109065304B - High-power water-cooling metal tube resistor - Google Patents
High-power water-cooling metal tube resistor Download PDFInfo
- Publication number
- CN109065304B CN109065304B CN201810713565.2A CN201810713565A CN109065304B CN 109065304 B CN109065304 B CN 109065304B CN 201810713565 A CN201810713565 A CN 201810713565A CN 109065304 B CN109065304 B CN 109065304B
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- China
- Prior art keywords
- metal tube
- container
- metal
- resistance unit
- resistor
- 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.)
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 118
- 239000002184 metal Substances 0.000 title claims abstract description 118
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000110 cooling liquid Substances 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 229920001342 Bakelite® Polymers 0.000 claims description 20
- 239000004637 bakelite Substances 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 9
- 150000004706 metal oxides Chemical class 0.000 claims description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 9
- 241001330002 Bambuseae Species 0.000 abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 9
- 239000011425 bamboo Substances 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Resistors (AREA)
Abstract
The utility model provides a high-power water-cooling metal tube resistor, its structure includes the container, fixes the support section of thick bamboo in the container and detachably wears to establish the resistance unit in the support section of thick bamboo, and the container is worn outside to the both ends portion of resistance unit, encloses into the cooling space that supplies the cooling liquid circulation between the lateral wall of support section of thick bamboo and the inside wall of container, and the container is opened has water inlet and the delivery port of intercommunication cooling space, and resistance unit and support section of thick bamboo laminating heat conduction. Compared with the prior art, the resistance unit is not in direct contact with the cooling liquid in the cooling space, and heat generated by the resistance unit can be conducted to the supporting cylinder and then taken away by the cooling liquid, so that corrosion of the cooling liquid to the resistance unit is eliminated, and the service life can be prolonged. And the resistance unit is detachably arranged in the supporting cylinder in a penetrating way, so that the resistance unit can be replaced and maintained conveniently after the resistance unit fails, and the maintenance cost is saved.
Description
Technical Field
The invention relates to the technical field of resistors, in particular to a high-power water-cooling metal tube resistor.
Background
The existing metal tube resistor generally comprises a metal tube and a resistance wire penetrating through the metal tube, wherein metal rods are inserted into two end parts of the metal tube, two ends of the resistance wire are respectively connected with the metal rods at two end parts of the metal tube, nonconductive metal oxide fillers are arranged between the resistance wire and the metal rods in the metal tube, and insulating pieces are inserted between the two end parts of the metal tube and the metal rods. In the prior art, in the technology for cooling a metal tube resistor by adopting a water cooling mode, generally, the outer peripheral surfaces of two end parts of a metal tube of the resistor are welded and fixed on a container, the middle part of the metal tube is suspended in the container, the container is provided with a water inlet and a water outlet, cooling liquid enters the container from the water inlet, directly contacts with the outer wall of the metal tube to take away heat, and then flows out from the water outlet. The prior art has the following defects: the cooling liquid is in direct contact with the metal tube, so that the corrosion of the metal tube can be accelerated, and the service life of the resistor can be shortened. In addition, the resistor is welded and fixed with the container, and the resistor cannot be replaced after being burnt out, so that the whole resistor together with the container is scrapped and cannot be used continuously due to difficult maintenance.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the high-power water-cooling metal tube resistor which can prolong the service life and is convenient to replace and maintain.
In order to achieve the above purpose, the present invention provides the following technical solutions.
The utility model provides a high-power water-cooling metal tube resistor, including the container, fix the support section of thick bamboo in the container and wear to establish the resistance unit in the support section of thick bamboo, the container is worn outside to the both ends portion of resistance unit, encloses into the cooling space that supplies the coolant circulation between the lateral wall of support section of thick bamboo and the inside wall of container, and the container is opened has water inlet and the delivery port of intercommunication cooling space, and resistance unit and support section of thick bamboo laminating heat conduction.
Wherein, the resistance unit detachably wears to establish in the support section of thick bamboo.
The support cylinders are provided with a plurality of parallel, the resistor units are respectively penetrated through the support cylinders, the container is cylindrical, flange plates are respectively fixed on the inner sides of two end parts of the container, and two end parts of each support cylinder are respectively fixed on the flange plates arranged on two end parts of the container.
Wherein, be provided with the terminal box at the tip of container, the tip of resistance unit wears into corresponding terminal box.
The junction box comprises a box body and a box cover, and the box cover is detachably connected with the box body.
Wherein, the support cylinder is a metal cylinder.
The resistor unit comprises a metal tube and a resistor wire penetrating through the metal tube, wherein metal rods penetrate through the two end parts of the metal tube, the inner end parts of the metal rods are inserted into the metal tube and connected with the resistor wire, and the outer end parts of the metal rods extend out of the metal tube to serve as leading-out ends; metal oxide fillers are filled between the inner wall of the metal tube and the outer wall of the metal rod, and between the inner wall of the metal tube and the resistance wire; and bakelite is injection-molded between the inner sides of the two end parts of the metal pipe and the metal rod, seals the port of the metal pipe and covers the outer side surface of the metal rod extending out of the metal pipe.
Wherein, the outside of metal bar is fixed with the retaining member of tube-shape, and the outside of retaining member is provided with the protruding recess of annular knurl, the inboard embedding of bakelite the protruding recess of annular knurl.
Wherein, the lateral surface of bakelite is wave structure.
Wherein the metal oxide filler is magnesia powder filler.
The invention has the beneficial effects that:
Compared with the prior art, the high-power water-cooling metal tube resistor has the advantages that the resistor unit is not in direct contact with the cooling liquid in the cooling space, and heat generated by the resistor unit can be conducted to the supporting cylinder and then taken away by the cooling liquid, so that corrosion of the cooling liquid to the resistor unit is avoided, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a high-power water-cooled metal tube resistor in an embodiment.
Fig. 2 is a schematic structural diagram of a high-power water-cooled metal tube resistor with a hidden resistor unit in an embodiment.
Fig. 3 is a schematic structural diagram of a resistor unit in an embodiment.
Fig. 4 is an enlarged view at a in fig. 3.
The reference numerals include:
a metal tube 1;
a resistance wire 2;
A metal rod 3;
a metal oxide filler 4;
bakelite 5, wave-shaped structure 51;
a fixing piece 6;
A locking member 7;
Container 8, water inlet 81, water outlet 82, junction box 83, box body 831, box cover 832, and sealing plate 834;
Flange plate 9
A support cylinder 10;
A resistor unit 11.
Detailed Description
The invention will be described in detail with reference to specific examples.
As shown in fig. 1 and 2, the high-power water-cooled metal tube resistor of the embodiment comprises a cylindrical container 8, wherein flange plates 9 are respectively arranged on the inner sides of two end parts of the container 8, and the periphery of the flange plates 9 and the inner side wall of the container 8 are fixed in a sealing welding manner. The two flange plates 9 are provided with four mounting holes, the mounting holes of the two flange plates 9 are in one-to-one coaxial correspondence, each pair of coaxial mounting holes are correspondingly fixed with a supporting cylinder 10 made of metal, the port periphery of the supporting cylinder 10 is sealed and welded with the mounting holes, so that the outer side wall of the supporting cylinder 10 and the inner side wall of the container 8 are jointly enclosed to form a cooling space for cooling liquid to circulate, the container 8 is provided with a water inlet 81 and a water outlet 82 which are communicated with the cooling space, the water inlet 81 is positioned at the right lower part of the container 8 in the figure, and the water outlet 82 is positioned at the left upper part of the container 8 in the figure. Each supporting cylinder 10 is detachably penetrated with a resistance unit 11, and the detachable mode can be that the resistance unit 11 is slightly in interference fit with the supporting cylinder 10, and the resistance unit 11 is attached to the supporting cylinder 10 for heat conduction. A junction box 83 is provided at the left end portion of the container 8, and the junction box 83 includes a box body 831 and a box cover 832, the box cover 832 being detachably connected to the box body 831. The left end portion of the resistor unit 11 penetrates into the junction box 83. The box cover 832 can be opened to connect the series-parallel connection relation between different resistance units 11, or can be adjusted according to the requirement in the later period so as to meet the use requirements of different resistance powers.
During manufacturing, the method corresponds to the following steps:
Step one: firstly, the peripheries of two ports of a supporting cylinder 10 are welded in the mounting holes of a flange plate 9;
Step two: the welded flange plate 9 and the supporting cylinder 10 are carried into the container 8 together, so that the flange plate 9 at the left end is aligned with the left end of the container 8, and the flange plate 9 at the right end is positioned in the container 8, so that only the alignment position of the flange plate 9 at the left end is needed, the flange plate 9 at the right end is automatically positioned, and only one positioning reference is needed, thereby being convenient for positioning;
step three: then the periphery of the flange plate 9 is welded and fixed with the inner side of the container 8;
Step four: inserting a plurality of resistor units 11 into different supporting cylinders 10, and adjusting and connecting the resistor units 11 in series-parallel connection; step five: the left end of the container 8 is provided with a fixing terminal box 83, and the right end of the container 8 is fixedly sealed by a sealing plate 834 combined with bolts, thereby manufacturing the integrated resistor.
Compared with the prior art, the heat generated by the resistor unit 11 in the embodiment is transferred to the cooling liquid through the supporting cylinder 10, and the resistor unit is not in direct contact with the cooling liquid in the cooling space, so that the corrosion of the cooling liquid to the resistor unit 11 is avoided, and the service life can be prolonged. And the resistance unit 11 is detachably arranged in the supporting cylinder 10 in a penetrating way, so that the resistance unit 11 can be conveniently replaced and maintained after being in fault, and the maintenance cost is saved.
In this embodiment, as shown in fig. 3 and 4, the resistance unit 11 includes a metal tube 1 and a resistance wire 2 penetrating the metal tube 1, and the resistance wire 2 is in a spring shape and is spiral. The metal pipe 1 is a seamless steel pipe. The metal rod 3 is worn to be equipped with at the both ends of metal pipe 1, and the inner tip of metal rod 3 inserts in the metal pipe 1 and is connected with resistance wire 2, and the outer tip of metal rod 3 extends to outside metal pipe 1 as the leading-out end, all fills between metal pipe 1 inner wall and metal rod 3 outer wall, between metal pipe 1 inner wall and resistance wire 2 and has nonconductive metal oxide filler 4, and metal oxide filler 4 is the magnesia powder filler preferably, and metal oxide filler 4 plays certain fixed action to metal rod 3. An bakelite 5 is injection-molded between the inner sides of the two end parts of the metal tube 1 and the metal rod 3, the bakelite 5 is used as an insulating piece to seal the port of the metal tube 1, and the outer side surface of the metal rod 3 extending out of the metal tube 1 is coated. The outside of the metal tube 1 is riveted with a fixing piece 6.
In this embodiment, the bakelite 5 is injection molded between the inner sides of the two ends of the metal tube 1 and the metal rod 3, and the bakelite 5 seals the port of the metal tube 1 and covers the outer side surface of the metal rod 3 extending out of the metal tube 1. The chemical name of bakelite 5 is phenolic plastic, which is non-water-absorbing and non-conductive and has good insulation. Furthermore, the bakelite 5 is injection molded on the metal tube 1, and compared with the traditional mode of directly inserting the insulating part finished product, the injection molding mode has better sealing performance. And the bakelite 5 has good heat and corrosion resistance, and can meet the requirement of using the resistor in a severe environment.
In this embodiment, the bakelite 5 wraps the outer side surface of the metal rod 3 extending out of the metal tube 1, and the outer side surface of the bakelite 5 is of a wave-shaped structure 51, so that a creepage path between the metal tube 1 and the metal rod 3 passes through the wave-shaped structure 51 of the outer side surface of the bakelite 5 to form a meandering and prolonged creepage distance, thereby preventing a short circuit between the metal tube 1 and the metal rod 3 and meeting the high-voltage and high-power use requirement.
In this embodiment, the tip winding of resistance wire 2 is fixed on the tip of metal bar 3, can be provided with the annular groove in the outside of the tip of metal bar 3 for better winding, and the tip winding of resistance wire 2 is in the annular groove, and power supply resistance wire 2 twines more firmly, compares traditional resistance wire 2 to weld at the mode of metal bar 3, adopts winding mode simpler, reduces the processing degree of difficulty and cost.
In this embodiment, a cylindrical locking member 7 is fixed to the outer side of the metal rod 3, and a knurling convex groove (not shown) is provided on the outer side of the locking member 7 (i.e., the side attached to the bakelite 5), into which the inner side of the bakelite 5 is embedded. The lines of the knurling convex grooves can be along the length direction of the knurling convex grooves, can also be around the circumference of the knurling convex grooves, and can also be staggered. Because the outside of metal bar 3 is fixed with retaining member 7, the outside of retaining member 7 is provided with the protruding recess of annular knurl, consequently retaining member 7 applys the locking force to the insulating part, prevents that the insulating part from outwards removing or rotating, stable in structure satisfies abominable operational environment's requirement.
When the resistor unit 11 is manufactured, the two ends of the resistor wire 2 are wound on the metal rod 3, the resistor wire is placed in the metal tube 1, the magnesium oxide powder is filled in the metal tube 1, and the effect of fixing the resistor wire 2 and the metal rod 3 can be achieved through multiple compaction of the magnesium oxide powder. Then, the end of the metal rod 3 far away from the resistance wire 2 is sleeved with the locking piece 7, and the fixing mode between the locking piece 7 and the metal rod 3 can be that the inner hole of the locking piece 7 is conical, and the metal rod 3 is sleeved with the locking piece is gradually tightened until the locking piece is fixed, or the locking piece 7 and the metal rod 3 are fixed through threads. After the locking piece 7 is fixed, the bakelite 5 is integrally injection molded, and finally the fixing piece 6 is formed by riveting, thus the resistor is integrally manufactured. .
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, 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 or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. A high-power water-cooled metal tube resistor is characterized in that: the cooling device comprises a container, a supporting cylinder fixed in the container and a resistance unit penetrating through the supporting cylinder, wherein two end parts of the resistance unit penetrate out of the container, a cooling space for cooling liquid to circulate is enclosed between the outer side wall of the supporting cylinder and the inner side wall of the container, the container is provided with a water inlet and a water outlet which are communicated with the cooling space, and the resistance unit is attached to the supporting cylinder for heat conduction;
The resistor unit comprises a metal tube and a resistor wire penetrating through the metal tube, wherein metal rods penetrate through the two end parts of the metal tube, the inner end parts of the metal rods are inserted into the metal tube and connected with the resistor wire, and the outer end parts of the metal rods extend out of the metal tube to serve as leading-out ends; metal oxide fillers are filled between the inner wall of the metal tube and the outer wall of the metal rod, and between the inner wall of the metal tube and the resistance wire; an bakelite is injection-molded between the inner sides of the two end parts of the metal pipe and the metal rod, seals the port of the metal pipe, and covers the outer side surface of the metal rod extending out of the metal pipe;
the outside of the metal rod is fixed with a tubular locking piece, the outside of the locking piece is provided with a knurling convex groove, and the inside of the bakelite is embedded into the knurling convex groove.
2. A high power water cooled metal tube resistor as claimed in claim 1, wherein: the resistance unit is detachably arranged in the supporting cylinder in a penetrating way.
3. A high power water cooled metal tube resistor as claimed in claim 1, wherein: the support cylinder is provided with a plurality of side by side, each support cylinder wears to be equipped with respectively the resistance unit, and the container is the tube-shape, and the inboard of the both ends of container is fixed with the flange board respectively, and the both ends of every support cylinder are fixed respectively on the flange board of locating the both ends of container.
4. A high power water cooled metal tube resistor as claimed in claim 1, wherein: a junction box is arranged at the end of the container, and the end of the resistance unit penetrates into the junction box.
5. The high power water cooled metal tube resistor of claim 4, wherein: the junction box comprises a box body and a box cover, wherein the box cover is detachably connected with the box body.
6. A high power water cooled metal tube resistor as claimed in claim 1, wherein: the supporting cylinder is a metal cylinder.
7. A high power water cooled metal tube resistor as claimed in claim 1, wherein: the outer side surface of the bakelite is of a wave-shaped structure.
8. A high power water cooled metal tube resistor as claimed in claim 1, wherein: the metal oxide filler is magnesia powder filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713565.2A CN109065304B (en) | 2018-06-29 | 2018-06-29 | High-power water-cooling metal tube resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713565.2A CN109065304B (en) | 2018-06-29 | 2018-06-29 | High-power water-cooling metal tube resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109065304A CN109065304A (en) | 2018-12-21 |
| CN109065304B true CN109065304B (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810713565.2A Active CN109065304B (en) | 2018-06-29 | 2018-06-29 | High-power water-cooling metal tube resistor |
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| Country | Link |
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| CN (1) | CN109065304B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585104A (en) * | 2018-12-26 | 2019-04-05 | 湖南福德电气有限公司 | A kind of detachable water-cooled resistor |
| CN109623183A (en) * | 2018-12-26 | 2019-04-16 | 广东福德电子有限公司 | A kind of pipe plate welding method of metal tube water-cooled resistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103389A (en) * | 2014-06-30 | 2014-10-15 | 南京南瑞继保电气有限公司 | Liquid cooling resistor and realization method thereof |
| CN105128260A (en) * | 2015-09-30 | 2015-12-09 | 东莞市中泰模具股份有限公司塘厦分公司 | Metal shell of electronic product and manufacturing method of metal shell |
| CN105741991A (en) * | 2016-03-30 | 2016-07-06 | 湖南中车特种电气装备有限公司 | Water-cooling resistance device for frequency conversion system |
| CN208596584U (en) * | 2018-06-29 | 2019-03-12 | 广东福德电子有限公司 | A kind of high-power water-cooling metal tube resistor |
-
2018
- 2018-06-29 CN CN201810713565.2A patent/CN109065304B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103389A (en) * | 2014-06-30 | 2014-10-15 | 南京南瑞继保电气有限公司 | Liquid cooling resistor and realization method thereof |
| CN105128260A (en) * | 2015-09-30 | 2015-12-09 | 东莞市中泰模具股份有限公司塘厦分公司 | Metal shell of electronic product and manufacturing method of metal shell |
| CN105741991A (en) * | 2016-03-30 | 2016-07-06 | 湖南中车特种电气装备有限公司 | Water-cooling resistance device for frequency conversion system |
| CN208596584U (en) * | 2018-06-29 | 2019-03-12 | 广东福德电子有限公司 | A kind of high-power water-cooling metal tube resistor |
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| Publication number | Publication date |
|---|---|
| CN109065304A (en) | 2018-12-21 |
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