CN112614664A - Repetition frequency water-cooling inductor for special integrated power supply system and manufacturing method - Google Patents
Repetition frequency water-cooling inductor for special integrated power supply system and manufacturing method Download PDFInfo
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- CN112614664A CN112614664A CN202011460661.4A CN202011460661A CN112614664A CN 112614664 A CN112614664 A CN 112614664A CN 202011460661 A CN202011460661 A CN 202011460661A CN 112614664 A CN112614664 A CN 112614664A
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- water
- inductor
- power supply
- repetition frequency
- supply system
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
Abstract
The invention discloses a repetition frequency water-cooled inductor for a special integrated power supply system and a manufacturing method thereof, belonging to the technical field of electrical engineering. This repetition frequency water-cooling inductance includes: the device comprises an epoxy cylinder, a tubular coil, an outer sealing layer, an upper end cover, a lower end cover, a water inlet nozzle, a water outlet nozzle, a first extraction electrode and a second extraction electrode. The repetition frequency water-cooling inductor provided by the invention is mainly used for a special integrated power supply system, the power supply system has high energy storage density, the inductor can adjust the current waveform in the special power supply system and can also enable the current generated by the whole power supply to reach MA level, the temperature of the inductor is reduced to be below 30 ℃ through circulating water, the discharge capacity of the special power supply system can be ensured, the charging interval period of the special power supply system is 6 seconds, the special power supply system continuously works for 10 times, and the quick repeated working performance, the reliability and the convenience of the system are ensured.
Description
Technical Field
The invention belongs to the technical field of electrical engineering, and particularly relates to a repetition frequency water-cooling inductor for a special integrated power supply system and a manufacturing method thereof.
Background
With the development of scientific technology and the demand of national defense strategies, the research of different types of rail guns is very necessary. The rail gun is supplied with energy by a special integrated power supply system, and is released through a pulse sequence to reach the required current waveform and current amplitude. The conventional protection inductor or wave modulation inductor can only carry out a single charge-discharge test under the full load condition, the charging time interval has certain requirements, and the conventional large-current inductor cannot meet the heat dissipation requirement of a repetition frequency discharge test which is carried out for 10 times continuously at an interval of 6 seconds. Therefore, the design of the repetition frequency water-cooling inductor used in the integrated power supply system with special energy storage density has very important practical use value and theoretical guiding significance for different types of rail guns.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a repetition frequency water-cooling inductor for a special integrated power supply system and a manufacturing method thereof, and aims to solve the heat dissipation problem of the traditional large inductor adopted by the existing rail gun.
In order to achieve the purpose, the invention provides a repetition frequency water-cooling inductor used in a special integrated power supply system on one hand, which comprises an epoxy cylinder, a tubular coil, an outer packaging layer, a water inlet nozzle, a water outlet nozzle, an upper end cover, a lower end cover, a first lead-out electrode and a second lead-out electrode; the upper end cover and the lower end cover are positioned at two ends of the epoxy cylinder, the water inlet water nozzle and the first leading-out electrode are fixed at one end of the tubular coil, the water outlet water nozzle and the second leading-out electrode are fixed at the other end of the tubular coil, the tubular coil is wound on the epoxy cylinder, and the outer sealing layer covers the surface of the tubular coil.
Further, the material of the tubular coil is copper or alloy.
Further, the inner diameter of the tubular coil is not less than 6mm, and the thickness of the tubular wall is not more than 4 mm.
Further, the material of the epoxy cylinder is glass fiber.
Furthermore, the water inlet nozzle and the water outlet nozzle are both composed of an inner tooth straight-through part and an outer tooth fast-connecting part.
The repetition frequency water-cooled inductor provided by the invention has high withstand voltage and large through-flow, has 10 continuous working discharge capacities within 6 seconds of a charging interval period, has normal temperature of the inductor below 30 ℃, injects deionized water into a tubular coil through a water inlet nozzle through a cooling system device, and performs inductor cooling through water circulation, the inductance is generally dozens to hundreds of microhenries, the inductor is mainly used for a special integrated power supply system, the system has high energy storage density, the inductor can adjust the current waveform in the special power supply system, the current which can be generated by the power supply system reaches MA level, the continuous working discharge capacities within 6 seconds of the charging interval period of the special power supply system and 10 continuous working discharge capacities are ensured, and the quick repeated working, reliability and convenience of the system are ensured.
The invention provides a repetition frequency water-cooling inductor for a special energy storage density integrated power supply, and aims to adjust the current waveform in an orbital gun system and generate great magnetic field force to push a projectile in an orbital gun to move. The repetition frequency water-cooling inductor avoids the generation of skin effect and the mobility of water in an inductor coil through a copper pipe or a soft alloy pipe, the inner diameter of the pipe is more than or equal to 6mm, the thickness of the pipe wall is less than or equal to 4mm, an outer tooth quick-connection water outlet nozzle of a water outlet nozzle is welded with a leading-out electrode and the pipe coil, cooled and fixed on an epoxy cylinder, and then the pipe coil is wound on an insulating cylinder for manufacturing, so that the flow rate of water in the inductor is ensured, the heat dissipation of the inductor is fast, the charging interval period is short, generally 6 seconds, and the continuous 10-time discharging capability can be achieved.
The invention further provides a manufacturing method of the repetition frequency water-cooling inductor for the special integrated power supply system, one end of the tubular coil is welded with the joint sleeve of the water inlet nozzle, the distance between the water inlet nozzle and the first leading-out electrode lug is measured according to the design drawing requirements, then the water inlet nozzle and the first leading-out electrode lug are fixed and welded, and the welding length of the lug and the water inlet nozzle is 45-50 mm. The end face of the tubular lead is smooth, the welded end is fixed on an epoxy cylinder with a wire turned well after being cooled, then winding is carried out, after the last turn is wound, the other end of the tubular coil is welded with a joint sleeve of a water outlet nozzle, the welding position of the tubular lead and a second leading-out electrode lug is determined, the welding length of the lug and the water inlet nozzle is 45-50 mm, and the welded other end is fixed at the other end of the epoxy cylinder with the wire turned well after being cooled; and finally, fixing an upper end cover and a lower end cover at two ends of the epoxy cylinder, and carrying out encapsulation treatment outside the tubular coil to form an outer encapsulation layer.
Further, performing a water tightness test on the wound inductor, adding a water nozzle at one end of the repetition frequency water-cooled inductor to a plug, and connecting the other end of the repetition frequency water-cooled inductor to a manual pressure pump to perform a specified strength test, and observing whether leakage occurs at each welding point and each interface; if the value of the pressure gauge is stable and unchanged, no leakage exists, and the next step of encapsulation can be carried out; if the value of the pressure gauge is reduced, the leakage is indicated, the leakage position is found, and the welding is returned to the previous step for re-welding.
Further, after the inductor subjected to the water tightness test is subjected to encapsulation, solidification, drying and cooling, the water tightness test is performed, a water nozzle at one end of the repetition frequency water-cooled inductor is added with a plug, the other end of the repetition frequency water-cooled inductor is connected to a manual pressure pump to perform a specified pressure intensity test, if the numerical value of a pressure gauge is stable and unchanged, no leakage exists, and the next step of treatment can be performed; otherwise, removing the encapsulating layer, returning to the previous step 2, finding out a leakage point, and re-welding.
And further, fixing end covers at two ends, and then carrying out insulating surface treatment.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the invention can solve the discharge capacity of a special power supply system with the charging interval period of 6 seconds and continuous working for 10 times, and ensures the quick repeated working performance, reliability and convenience of the system when the temperature of the inductor water is normal and is below 30 ℃;
(2) the invention can solve the heating problem of the repetition frequency inductor in the high-density integrated power supply system; the traditional large-current inductor cannot meet the heat dissipation requirement of a repetition frequency discharge test which is continuously carried out for 10 times at an interval of 6 seconds. The water-cooled inductor has the capability of continuously working for 10 times in a charging interval period of 6 seconds, and the water temperature of the inductor is normal and is below 30 ℃;
(3) the invention can solve the problem that the repetition frequency inductor can bear the large current of dozens of kiloamperes to hundreds of kiloamperes.
Drawings
FIG. 1 is a structural sectional view of a repetition frequency water-cooling inductor in an integrated power supply for special energy storage density according to the present invention;
FIG. 2 is a three-dimensional external view of a repetition frequency water-cooling inductor in an integrated power supply for special energy storage density according to the present invention;
reference numerals:
1. epoxy section of thick bamboo, 2, tubular coil, 3, outer envelope layer, 4, first fixed pin, 5, water injection well choke, 6, play water injection well choke, 7, upper end cover, 8, bottom end cover, 9, first extraction electrode, 10, second extraction electrode, 11, second fixed pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 2, the invention provides a repetition frequency water-cooling inductor for a special integrated power supply system, which comprises an epoxy cylinder 1, a tubular coil 2, an outer sealing layer 3, a water inlet nozzle 5, a water outlet nozzle 6, an upper end cover 7, a lower end cover 8, a first leading-out electrode 9 and a second leading-out electrode 10; the upper end cover 7 and the lower end cover 8 are located at two ends of the epoxy cylinder 1, the upper end cover 7 is fixed on the epoxy cylinder 1 through a second fixing pin 11, the lower end cover 8 is fixed on the epoxy cylinder 1 through a first fixing pin 4, the water inlet water nozzle 5 and the first leading-out electrode 9 are fixed at one end of the tubular coil 2, the water outlet water nozzle 6 and the second leading-out electrode 10 are fixed at the other end of the tubular coil 2, the tubular coil 2 is wound on the epoxy cylinder 1, and the outer sealing layer 3 covers the surface of the tubular coil 2.
Specifically, the material of the tube coil 2 is copper or an alloy.
Specifically, the inner diameter of the tubular coil 2 is not less than 6mm, and the thickness of the tubular wall is not more than 4 mm.
Specifically, the material of the epoxy cartridge 1 is glass fiber.
Specifically, the water inlet nozzle 5 and the water outlet nozzle 6 are both composed of an inner tooth straight-through part and an outer tooth quick-connecting part.
The invention also provides a manufacturing method of the repetition frequency water-cooling inductor for the special integrated power supply system, one end of the tubular coil is sleeved and welded with the connector of the water inlet nozzle, the distance between the water inlet nozzle and the first leading-out electrode lug is measured according to the design drawing requirements, then the water inlet nozzle and the first leading-out electrode lug are fixed and welded, and the welding length of the lug and the water inlet nozzle is 45-50 mm. The end face of the tubular lead is smooth, the welded end is fixed on an epoxy cylinder with a wire turned well after being cooled, then winding is carried out, after the last turn is wound, the other end of the tubular coil is welded with a joint sleeve of a water outlet nozzle, the welding position of the tubular lead and a second leading-out electrode lug is determined, the welding length of the lug and the water inlet nozzle is 45-50 mm, and the welded other end is fixed at the other end of the epoxy cylinder with the wire turned well after being cooled; and finally, fixing an upper end cover and a lower end cover at two ends of the epoxy cylinder, and carrying out encapsulation treatment outside the tubular coil to form an outer encapsulation layer.
Specifically, the water tightness of the wound inductor is tested, a water nozzle at one end of the repetition frequency water-cooled inductor is added with a plug, a manual pressure pump is connected to the other end of the repetition frequency water-cooled inductor for specified strength test, and the leakage phenomenon of each welding point and each interface is observed; if the value of the pressure gauge is stable and unchanged, no leakage exists, and the next step of encapsulation can be carried out; if the value of the pressure gauge is reduced, the leakage is indicated, the leakage position is found, and the welding is returned to the previous step for re-welding.
Specifically, after the inductor subjected to the water tightness test is subjected to encapsulation, solidification, drying and cooling, the water tightness test is performed, a water nozzle at one end of the repetition frequency water-cooled inductor is added with a plug, the other end of the repetition frequency water-cooled inductor is connected to a manual pressure pump to perform a specified pressure intensity test, if the numerical value of a pressure gauge is stable and unchanged, no leakage exists, and the next step of treatment can be performed; otherwise, removing the encapsulating layer, returning to the previous step 2, finding out a leakage point, and re-welding.
Specifically, the end covers at the two ends are fixed and then subjected to insulation surface treatment.
Examples
The embodiment provides a design and manufacturing method of a repetition frequency water-cooling inductor in an integrated power supply for special energy storage density, the sectional area of a soft copper pipe or an alloy pipe is selected according to the requirements of energy absorption, inductance value, direct current resistance value, flow size and temperature rise of the repetition frequency water-cooling inductor, the flow capacity of the repetition frequency water-cooling inductor is determined by the sectional area, the inner diameter and the outer diameter of the alloy pipe are selected to determine the sectional area by calculating the required resistance value according to a resistance formula, then the temperature rise is calculated according to a Joule law formula, and the temperature rise is determined by the energy absorbed by the weight of the repetition frequency water-cooling inductor copper pipe or the alloy pipe.
The design of the repetition frequency water-cooling inductor for the integrated power supply system with the special energy storage density comprises the following steps:
firstly, determining the inner diameter D1 of a soft alloy tube, the wall thickness h of a copper tube or an alloy tube, the outer diameter D2 of the copper tube or the alloy tube and the sectional area S2-S1 of the copper tube or the alloy tube according to a preset current I, and utilizing a resistance law formula
Calculating the resistance value R0 of the copper pipe or the alloy pipe;
secondly, determining the average diameter d of the coil according to the preset inductance L, the outer diameter phi 2 of the insulating cylinder, the groove depth b and the winding height a;
thirdly, calculating and looking up the table to obtain the formula of the air core inductor
Using the formula of air-core solenoid inductance
Calculating the number of turns N of the repetition frequency water-cooling inductor; if the insulation distance does not meet the requirement, the inner diameter phi 1 and the outer diameter phi 2 of the insulation cylinder, the wall thickness b and the winding height a are selected again for calculation, and the next step can be carried out until the given requirement is met;
fourthly, if the calculated resistance value R of the repetition frequency water-cooling inductor0According to a predetermined value R0Carrying out the next design; if not, return toThe copper pipe or the alloy pipe with different pipe wall thicknesses and inner and outer diameters is reselected in one step until the calculated resistance value R is reached0According to a predetermined value R0；
Fifthly, calculating the mass m of the required alloy pipe by using m-S-l according to the sectional area (S2-S1) of the copper pipe or the alloy pipe, the winding length l of the copper pipe or the alloy pipe and the wall thickness h of the alloy pipe;
and sixthly, calculating according to an adiabatic process, and calculating the temperature rise delta t of the copper pipe or the alloy pipe according to an endothermic formula Q-C m delta t, wherein C is the specific heat capacity of the copper pipe or the alloy material, and Q is the energy born by a given inductor. And if the temperature rise is lower than the set temperature threshold, designing to meet the requirement, otherwise, returning to the first step for redesign.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A repetition frequency water-cooling inductor for a special integrated power supply system is characterized by comprising an epoxy cylinder (1), a tubular coil (2), an outer sealing layer (3), a water inlet nozzle (5), a water outlet nozzle (6), an upper end cover (7), a lower end cover (8), a first extraction electrode (9) and a second extraction electrode (10); the utility model discloses a tubular coil, including epoxy section of thick bamboo (2), upper end cover (7) and lower end cover (8), water injection well choke (5) and first extraction electrode (9) are fixed in the one end of tubular coil (2), water injection well choke (6) and second extraction electrode (10) are fixed at the other end of tubular coil (2), tubular coil (2) coiling is on epoxy section of thick bamboo (1), and outer envelope layer (3) cover is on tubular coil (2) surface.
2. The repetition frequency water-cooled inductor according to claim 1, characterized in that the material of the tubular coil (2) is copper or an alloy.
3. The repetition frequency water-cooled inductor according to claim 2, characterized in that the inner diameter of the tubular coil (2) is not less than 6mm, and the thickness of the tubular wall is not more than 4 mm.
4. The repetition frequency water-cooled inductor according to claim 1, characterized in that the material of the epoxy cylinder (1) is glass fiber.
5. The repetition frequency water-cooled inductor as claimed in claim 1, wherein the water inlet nozzle (5) and the water outlet nozzle (6) are both composed of an inner tooth through connection and an outer tooth quick connection.
6. A manufacturing method of a repetition frequency water-cooling inductor used in a special integrated power supply system based on any one of claims 1 to 5 is characterized in that one end of a tubular coil is welded with a water inlet nozzle and a first leading-out electrode, the welded end is fixed at one end of an epoxy cylinder with wires after being cooled, and then inductor winding is carried out; after the inductor is wound to the last turn, the other end of the tubular coil is welded with the water outlet nozzle and the second leading-out electrode, and the welded other end is fixed at the other end of the epoxy cylinder with the wire after being cooled; and finally, fixing an upper end cover and a lower end cover at two ends of the epoxy cylinder, and carrying out encapsulation treatment outside the tubular coil to form an outer encapsulation layer.
7. The manufacturing method of claim 6, wherein the welding length of the first extraction electrode and the water inlet nozzle is 45-50 mm, and the welding length of the second extraction electrode and the water outlet nozzle is 45-50 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011460661.4A CN112614664A (en) | 2020-12-11 | 2020-12-11 | Repetition frequency water-cooling inductor for special integrated power supply system and manufacturing method |
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| CN202011460661.4A CN112614664A (en) | 2020-12-11 | 2020-12-11 | Repetition frequency water-cooling inductor for special integrated power supply system and manufacturing method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0582218A1 (en) * | 1992-08-04 | 1994-02-09 | ABBPATENT GmbH | Choke coil for a converter |
| CN101819851A (en) * | 2010-05-07 | 2010-09-01 | 华中科技大学 | Protective inducer for capacitor bank and manufacturing method thereof |
| CN206293279U (en) * | 2016-12-03 | 2017-06-30 | 上海兆力电器制造有限公司 | Commutation inductance and the intermediate frequency power supply equipment containing the commutation inductance |
-
2020
- 2020-12-11 CN CN202011460661.4A patent/CN112614664A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0582218A1 (en) * | 1992-08-04 | 1994-02-09 | ABBPATENT GmbH | Choke coil for a converter |
| CN101819851A (en) * | 2010-05-07 | 2010-09-01 | 华中科技大学 | Protective inducer for capacitor bank and manufacturing method thereof |
| CN206293279U (en) * | 2016-12-03 | 2017-06-30 | 上海兆力电器制造有限公司 | Commutation inductance and the intermediate frequency power supply equipment containing the commutation inductance |
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Application publication date: 20210406 |