CN102744484B - Special system for braze joint between radiator and collector of STWT (Spatial Travelling Wave Tube) - Google Patents
Special system for braze joint between radiator and collector of STWT (Spatial Travelling Wave Tube) Download PDFInfo
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- CN102744484B CN102744484B CN201110101382.3A CN201110101382A CN102744484B CN 102744484 B CN102744484 B CN 102744484B CN 201110101382 A CN201110101382 A CN 201110101382A CN 102744484 B CN102744484 B CN 102744484B
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Abstract
The invention discloses a special system for a braze joint between a radiator and a collector of an STWT (Spatial Travelling Wave Tube) and relates to an electron tube technology. The special system comprises a heating device, a heat insulation device and a cooling device. The system has the following beneficial effects: 1, a vacuum braze joint is achieved between the radiator and the collector of the STWT, solder is fully filled, and the thermal resistance of welding seams is low; 2, the magnetic steel of a spiral magnetic circuit part is kept at a highest service temperature, so that the performance of the magnetic steel can be effectively prevented from changing greatly before and after a brazing process is implemented; and 3, insulating silicone rubber poured into the electron gun part of the STWT is kept at the highest service temperature, so that the insulating silicone rubber is prevented from being subjected to aged deterioration.
Description
Technical field
The present invention relates to electron tube technical field, particularly radiator and space travelling wave tube collector brazing dedicated system.
Background technology
Space travelling wave tube is the core component of final power amplifier that is widely used in transponder, data transmission system, radar and the ECM transmitter etc. of telecommunication satellite, reconnaissance satellite, aeronautical satellite, landsat, meteorological satellite, seasat and manned space flight and lunar exploration engineering.For telecommunication satellite and aeronautical satellite, the space travelling wave tube quantity of using on star is very large, and the used heat that they produce can not directly be arranged and fall apart in satellite capsule, otherwise can cause that the temperature of on-board equipment raises, and affects their normal work.For guaranteeing that on star, all devices can normally be worked for a long time, the used heat row that travelling-wave tubes must be produced falls apart in cosmic space.For this reason, nearly all telecommunication satellite has all adopted radiator with space travelling wave tube.By on space travelling wave tube collector, radiator being installed, a large amount of waste heat radiations that directly travelling-wave tubes produced in deep space, thereby significantly reduce the heat that travelling-wave tubes passes to satellite.
The installation method of radiator on space travelling wave tube collector generally has two kinds: the one, and direct mechanical connects, and by certain fastening structure design, makes radiator together with fitting tightly between space travelling wave tube collector.The 2nd, brazing, be exactly by radiator soldering on space travelling wave tube collector.Contact surface between radiator and space travelling wave tube collector due to the reason microscopic appearance of surface roughness as shown in Figure 1.Mechanical connection can only be realized local contact between two surfaces.If apply heat-conducting silicone grease between two surfaces, although can improve the heat conduction state between two surfaces, but in heat-conducting silicone grease, contain large amount of organic, they are outside when Energetic particle bundle irradiation and elevated operating temperature under effect, can maintain long-term stable operation (space travelling wave tube General Requirements working life is greater than 10 years), be worth discussion.Brazing is because the brazing metal using can be good with radiator, space travelling wave tube collector moistened surface, therefore can be well that the space of contact surface between radiator and space travelling wave tube collector is contacted to filling by atom level is full.In addition brazing metal thermal conductivity is higher than heat-conducting silicone grease, therefore compare with mechanical connection, less than mechanical connection by the thermal resistance between brazing radiator and space travelling wave tube collector, space travelling wave tube collector can be worked at lower temperature, is conducive to improve functional reliability and the service life of space travelling wave tube.
Brazing between radiator and space travelling wave tube collector is normally surveyed through abundant heat at travelling-wave tubes, and electrical property carries out after the assay was approved.Now on travelling-wave tubes, on the one hand magnetic circuit magnet steel is installed, electron gun high-voltage connection partly has the electrically insulating silicone rubber of perfusion on the other hand.Magnetic circuit magnet steel is surpassing under maximum operation (service) temperature baking effect own, and magnetic property will decline.In the situation that surpassing own maximum operation (service) temperature, will there is aged deterioration, decreasing insulating in electrically insulating silicone rubber.Cause device damage, reduce service life.
Summary of the invention
The object of the invention is to disclose a kind of radiator and space travelling wave tube collector brazing dedicated system, the problem existing to solve prior art, between radiator and space travelling wave tube collector during soldering, in the full situation of commissure scolder filling, avoid space travelling wave tube magnetic circuit magnet steel and electrically insulating silicone rubber to surpass its maximum operation (service) temperature, ensure that space travelling wave tube hot electrical property of surveying before and after soldering processes are implemented remains unchanged substantially.
For achieving the above object, technical solution of the present invention is:
A kind of radiator and space travelling wave tube collector brazing dedicated system, it comprises heater, heat-proof device, cooling device, wherein, cooling device is tubulose or semicircle tubulose water jacket, in the electrically insulating silicone rubber that magnet steel, travelling-wave tubes electron gun, the electron gun high-voltage connection of travelling tube helical line part, magnetic circuit II part are partly poured into is wrapped in; Heat-proof device is sheet annulus, is positioned at cooling device lower end below, and heat-proof device is separated into A, B Liang Ge district by whole vacuum space, and A district is vacuum, without heater region, and B district is vacuum, have heater region; Heater is positioned at heat-proof device below, encloses in radiator outside, and gapped between heater inwall and radiator periphery wall, heater is arranged on B district cavity inner wall; Heater connects power supply, and cooling device connects circulating cooling medium;
While carrying out brazing between to radiator and space travelling wave tube collector, system is vertically placed in to vacuum≤1.2 * 10
-3in the environment of Pa, space travelling wave tube collector is placed in radiator, and both concyclic hearts fill up scolder at the contact-making surface of space travelling wave tube collector and radiator; Start power supply heating, carry out brazing.
Described brazing dedicated system, it also comprises the magnet steel of magnetic circuit I part, the magnet steel of magnetic circuit I part is positioned at the lower end of the magnet steel of magnetic circuit II part, between to radiator and space travelling wave tube collector, carry out before brazing, the magnet steel of the magnetic circuit I part of first dismantling, and record in detail installation position and the order of dismantling magnetic circuit I magnet steel partly, to reducing because magnetic circuit I magnet steel partly loads and unloads the impact on travelling-wave tubes electrical property.
Described brazing dedicated system, heat-proof device described in it, comprises multi-disc annulus metallic plate, a metallic cylinder, and multi-disc annulus metallic plate is stacked shape and is fixed in metallic cylinder periphery circle, and Vertical Curve is broken into two semi-circular structure; Metallic cylinder internal diameter is greater than the circular diameter of the magnet steel formation of magnetic circuit I part.
Described brazing dedicated system, cooling device described in it, is the pipe that annealing oxygen-free copper pipe is entwined, logical cooling media in pipe, lower end is import near space travelling wave tube collector place, upper end is outlet near electron gun place.
Described brazing dedicated system, cooling device described in it, is two independently semicircle shape tubulose refrigerating modules, in its cavity, is filled with cooling media, two refrigerating modules have respectively import, outlet; The upper and lower coaxial sleeve of two refrigerating modules is placed in magnet steel, electron gun, the electrically insulating silicone rubber cylindrical of travelling-wave tubes magnetic circuit II part, the cooling electrically insulating silicone rubber of refrigerating module above, electron gun, the magnet steel of the cooling travelling-wave tubes magnetic circuit of refrigerating module II part below.
Described brazing dedicated system, refrigerating module described in it, comprises left and right two halves, every half part all has cooling media import and export, import under, outlet is upper.
Described brazing dedicated system, cooling media described in it, is water.
Brazing dedicated system of the present invention, its advantage is: 1, between radiator and space travelling wave tube collector, vacuum brazing is connected, and scolder filling is full, and weld seam thermal resistance is low; 2, keep the magnet steel of helix magnetic circuit part under its maximum operation (service) temperature, can effectively avoid magnet steel performance implementing to occur larger variation before and after soldering processes; 3, make electrically insulating silicone rubber that travelling-wave tubes electron gun partly pours under its maximum operation (service) temperature, to avoid its aged deterioration.
Accompanying drawing explanation
Fig. 1 is the microscopic appearance schematic diagram of existing radiator and space travelling wave tube collector contact surface;
Fig. 2 is space travelling wave tube overall structure schematic diagram before brazing radiator;
Fig. 3 is radiator of the present invention and space travelling wave tube collector brazing dedicated system structural representation; Wherein:
1 is travelling-wave tubes input structure; 2 is travelling-wave tubes export structure; 3 is B district heater; 4 is radiator; 5 is space travelling wave tube collector stem; 6 is space travelling wave tube collector; 7 is the scolder of filling between radiator and space travelling wave tube collector; 8 is the heat-proof device between A, B district; 9 is the magnet steel of magnetic circuit I part; 10 is travelling tube helical line part; 11 is the magnet steel of magnetic circuit II part; 12 is the cooling device of travelling tube helical line and electron gun part; 13 is travelling-wave tubes electron gun; 14 electrically insulating silicone rubbers that partly pour into for electron gun high-voltage connection; 15 is the high-voltage connection of travelling-wave tubes electron gun; 16 is travelling-wave tubes titanium pump;
Fig. 4 is the heat-proof device structural representation of brazing dedicated system of the present invention; Wherein:
Fig. 4 (a) heat-proof device top view;
Fig. 4 (b) is M-M line cutaway view in Fig. 4 (a);
Fig. 5 is cooling device embodiment 1 schematic diagram of brazing dedicated system of the present invention; In figure: 17a is delivery port; 17b is water inlet; 18 is copper pipe;
Fig. 6 is cooling device embodiment 2 schematic diagrames of brazing dedicated system of the present invention; Wherein:
Fig. 6 (a) is cold-zone device 2 general assembly drawings;
Fig. 6 (b) is cooling water jacket structure schematic diagram.
In figure: 19a1,19a2 are the delivery port of electron gun 13, silicon rubber 14 cooling jackets;
19b1,19b2 are the water inlet of electron gun 13, silicon rubber 14 cooling jackets;
20a1,20a2 are the delivery port of travelling-wave tubes magnet steel 11 cooling jackets;
20b1,20b2 are the water inlet of travelling-wave tubes magnet steel 11 cooling jackets.
The specific embodiment
Before brazing radiator, the overall structure of space travelling wave tube, is shown in Fig. 2.
Be illustrated in figure 3 the dedicated system of brazing between radiator of the present invention and space travelling wave tube collector.Heat-proof device 8 is divided into upper and lower two cylindrical regions of A, B by whole vacuum cavity, and A district is vacuum, without heater region, and B district is vacuum, have heater region.Radiator 4 is with space travelling wave tube collector 6 brazing parts in B district, and travelling-wave tubes remainder is in A district.A, vacuum≤1.2 * 10, B Liang Ge district during work
-3pa, low vacuum is conducive to get rid of the gas in scolder 7 in brazing process, realizes the full filling of scolder between radiator and space travelling wave tube collector, effectively reduces the thermal resistance between radiator and space travelling wave tube collector.
Be illustrated in figure 4 the structural representation of heat-proof device 8.Heat-proof device 8 is built up by the metallic plate of multiple-level surface light, by intermetallic metal cylinder, links together.After monolithic molding, then perpendicular to paper aspect, cut into two parts along a-b-c-d.Heat-proof device 8 can stop the heat radiation of B district high-temperature component to enter A district, reduces the temperature rise in A district.
Heater 3 is installed in B district, and heater 3 is arranged on B district cavity inner wall.Heater 3 is the circumferential circle that distributes in B district, and its internal diameter is greater than A district internal diameter, when Dui B district implements effectively to heat, can avoid the heat radiation of calandria to enter A district, reduces the temperature rise in A district.
The cooling difficult realization of the magnet steel 9 of magnetic circuit I part, magnet steel 9 for fear of magnetic circuit I part surpasses its maximum operation (service) temperature in soldering processes process, at space travelling wave tube, through abundant heat, survey, after check electrical property is qualified, first a little magnet steel 9 of the magnetic circuit I part of dismantling, and record in detail installation position and the order of dismantling magnetic circuit I magnet steel 9 partly, to reducing the impacts of loading and unloading travelling-wave tubes electrical property due to magnetic circuit I magnet steel 9 partly.
A district has cooling device 12, can cooling space travelling tube helical line part magnetic circuit II the magnet steel 11 of part and the electrically insulating silicone rubber 14 of electron gun 13 parts perfusions, make magnet steel 11, the silicon rubber 14 of magnetic circuit II part be no more than their maximum operation (service) temperatures separately.Cooling device 12 has cooling scheme 1 and cooling scheme 2.Be illustrated in figure 5 cooling embodiment 1, on magnet steel 11, electron gun 13, electrically insulating silicone rubber 14 surfaces of magnetic circuit II part, be wound around the oxygen-free copper pipe of annealing, logical cooling water in pipe, near one end water inlet of space travelling wave tube collector 6, near one end water outlet of electron gun 13.As Fig. 6 (a), (b) are depicted as cooling embodiment 2, the magnet steel 11 of magnetic circuit II part and electron gun 13, electrically insulating silicone rubber 14 are distinguished cooling separately.Special refrigerating module is divided into left and right two halves, and every half part all has into water, delivery port, and water inlet is all near space travelling wave tube collector 6 one end, and delivery port is all near electron gun 13 one end.
Space travelling wave tube is surveyed through abundant heat, electrical property after the assay was approved, a little magnet steel 9 of the magnetic circuit I part of first dismantling, and the installation position of the magnet steel that record disassembles in detail and order.On space travelling wave tube collector 6, install afterwards radiator 4, and the commissure between radiator 4 and space travelling wave tube collector 6 places scolder, afterwards the travelling-wave tubes that installs radiator is put into B district, and fix with the mould support of suitable height, and arrange temperature thermocouple, brazing process is monitored.Afterwards heat-proof device 8 is enclosed between travelling-wave tubes output device 2 and space travelling wave tube collector 6, the lower surface of heat-proof device 8 is concordant with the upper surface in heating B district.Install afterwards cooling device 12, after fixing, and install monitoring thermocouple.After all installing, to A, B district be evacuated to≤1.2 * 10
-3pa, heats by 3 pairs of brazing area of heater afterwards.In brazing process, the temperature of each point for measuring temperature of Real-Time Monitoring.By regulating the cooling water flow of A zone cooling device 12, can regulate the temperature rise at the magnet steel of magnetic circuit 11 parts and electron gun 13, electrically insulating silicone rubber 14 positions, control their temperature under maximum operation (service) temperature.After soldering completes, A, the inflation of B district are returned to normal pressure, remove thermocouple, cooling device 12, heat-proof device 8, taking-up is with the travelling-wave tubes of radiator, the magnet steel 9 of the magnetic circuit I part of taking off, according to original installation position and order recovery original position, has just been completed to the brazing between radiator and space travelling wave tube collector to this.In whole process, be less than 1.2 * 10
-3the low vacuum of Pa can effectively be got rid of the gas existing in weld seam, makes scolder filling in weld seam full, and the thermal resistance between space travelling wave tube collector and radiator is significantly reduced.In whole process, magnet steel and electrically insulating silicone rubber, always under the maximum operation (service) temperature in them, can be avoided magnet steel hydraulic performance decline and silicon rubber aged deterioration.
More than comprehensive, by radiator and space travelling wave tube collector brazing dedicated system, can realize before and after radiator and space travelling wave tube collector brazing, heat is surveyed electrical property and is substantially remained unchanged.
Claims (7)
1. a radiator and space travelling wave tube collector brazing dedicated system, it is characterized in that, comprise heater (3), heat-proof device (8), cooling device (12), wherein, cooling device (12) is tubulose or semicircle tubulose water jacket, in the electrically insulating silicone rubber (14) that magnet steel (11), travelling-wave tubes electron gun (13), the electron gun high-voltage connection of travelling tube helical line part (10), magnetic circuit II part are partly poured into is wrapped in; Heat-proof device (8) is sheet annulus, is positioned at cooling device (12) lower end below, and heat-proof device is separated into A, B Liang Ge district by whole vacuum space, and A district is vacuum, without heater region, and B district is vacuum, have heater region; Heater (3) is positioned at heat-proof device (8) below, encloses in radiator (4) outside, and gapped between heater (3) inwall and radiator (4) periphery wall, heater is arranged on B district cavity inner wall; Heater (3) connects power supply, and cooling device (12) connects circulating cooling medium;
While carrying out brazing between to radiator (4) and space travelling wave tube collector (6), system is vertically placed in to vacuum≤1.2 * 10
-3in the environment of Pa, space travelling wave tube collector (6) is placed in radiator (4), and both concyclic hearts fill up scolder (7) at space travelling wave tube collector (6) and the contact-making surface of radiator (4); Start power supply heating, carry out brazing.
2. brazing dedicated system according to claim 1, it is characterized in that, the magnet steel (9) that also comprises magnetic circuit I part, the magnet steel (9) of magnetic circuit I part is positioned at the lower end of the magnet steel (11) of magnetic circuit II part, between to radiator (4) and space travelling wave tube collector (6), carry out before brazing, the magnet steel (9) of the magnetic circuit I part of first dismantling, and record in detail installation position and the order of dismantling magnetic circuit I magnet steel (9) partly, to reducing because magnetic circuit I magnet steel (9) partly loads and unloads the impact on travelling-wave tubes electrical property.
3. brazing dedicated system according to claim 1, it is characterized in that described heat-proof device (8) comprises multi-disc annulus metallic plate, a metallic cylinder, multi-disc annulus metallic plate is stacked shape and is fixed in metallic cylinder periphery circle, and Vertical Curve is broken into two semi-circular structure; Metallic cylinder internal diameter is greater than the circular diameter of magnet steel (9) formation of magnetic circuit I part.
4. brazing dedicated system according to claim 1, it is characterized in that, described cooling device (12), for the pipe that is entwined of annealing oxygen-free copper pipe, logical cooling media in pipe, lower end is located as import near space travelling wave tube collector (6), and upper end is located as outlet near electron gun (13).
5. brazing dedicated system according to claim 1, is characterized in that, described cooling device (12) is two independently semicircle shape tubulose refrigerating modules, in its cavity, is filled with cooling media, and two refrigerating modules have respectively import, outlet; The upper and lower coaxial sleeve of two refrigerating modules is placed in magnet steel (11), electron gun (13), electrically insulating silicone rubber (14) cylindrical of magnetic circuit II part, the cooling electrically insulating silicone rubber of refrigerating module (14) above, electron gun (13), the magnet steel (11) of refrigerating module cooling magnetic circuit II part below.
6. brazing dedicated system according to claim 5, is characterized in that, described refrigerating module comprises left and right two halves, and every half part all has cooling media import and export, import under, outlet is upper.
7. according to the brazing dedicated system described in claim 1,4 or 5, it is characterized in that, described cooling media, is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110101382.3A CN102744484B (en) | 2011-04-22 | 2011-04-22 | Special system for braze joint between radiator and collector of STWT (Spatial Travelling Wave Tube) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110101382.3A CN102744484B (en) | 2011-04-22 | 2011-04-22 | Special system for braze joint between radiator and collector of STWT (Spatial Travelling Wave Tube) |
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| Publication Number | Publication Date |
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| CN102744484A CN102744484A (en) | 2012-10-24 |
| CN102744484B true CN102744484B (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110101382.3A Active CN102744484B (en) | 2011-04-22 | 2011-04-22 | Special system for braze joint between radiator and collector of STWT (Spatial Travelling Wave Tube) |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148241B (en) * | 2018-07-17 | 2020-01-31 | 中国工程物理研究院应用电子学研究所 | entire tube heat dissipation system for improving work duty ratio of terahertz traveling wave tube |
| CN113579391A (en) * | 2021-07-15 | 2021-11-02 | 南京三乐集团有限公司 | Vacuum reflow soldering equipment for space traveling wave tube heat radiator |
Citations (6)
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|---|---|---|---|---|
| GB286823A (en) * | 1927-01-01 | 1928-03-15 | Neville Ryland Davis | Improvements in the brazing, soldering or welding of metals by fusion |
| US3590201A (en) * | 1969-05-14 | 1971-06-29 | Aeroquip Corp | Photoelectric control systems for brazing tools |
| CN1981971A (en) * | 2005-12-14 | 2007-06-20 | 中国科学院电子学研究所 | Precisive internal concentric clamp of centering vertical high-frequency brazing die |
| CN2928345Y (en) * | 2006-07-27 | 2007-08-01 | 中国科学院电子学研究所 | Vertical inner centering soldering device |
| CN101318245A (en) * | 2008-07-08 | 2008-12-10 | 四川成发航空科技股份有限公司 | Tube fin brazing process and internal tube heating soldering machine for |
| CN101441150A (en) * | 2008-10-09 | 2009-05-27 | 海信科龙电器股份有限公司 | Vacuum thermal insulation heating apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5762859A (en) * | 1980-09-30 | 1982-04-16 | Chugai Ro Kogyo Kaisha Ltd | Method and furnace for aluminum brazing using protective atmosphere |
-
2011
- 2011-04-22 CN CN201110101382.3A patent/CN102744484B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB286823A (en) * | 1927-01-01 | 1928-03-15 | Neville Ryland Davis | Improvements in the brazing, soldering or welding of metals by fusion |
| US3590201A (en) * | 1969-05-14 | 1971-06-29 | Aeroquip Corp | Photoelectric control systems for brazing tools |
| CN1981971A (en) * | 2005-12-14 | 2007-06-20 | 中国科学院电子学研究所 | Precisive internal concentric clamp of centering vertical high-frequency brazing die |
| CN2928345Y (en) * | 2006-07-27 | 2007-08-01 | 中国科学院电子学研究所 | Vertical inner centering soldering device |
| CN101318245A (en) * | 2008-07-08 | 2008-12-10 | 四川成发航空科技股份有限公司 | Tube fin brazing process and internal tube heating soldering machine for |
| CN101441150A (en) * | 2008-10-09 | 2009-05-27 | 海信科龙电器股份有限公司 | Vacuum thermal insulation heating apparatus |
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| CN102744484A (en) | 2012-10-24 |
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