CN102184827A - Method for improving voltage parameter consistency of filaments of traveling wave tubes - Google Patents
Method for improving voltage parameter consistency of filaments of traveling wave tubes Download PDFInfo
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- CN102184827A CN102184827A CN2011100567530A CN201110056753A CN102184827A CN 102184827 A CN102184827 A CN 102184827A CN 2011100567530 A CN2011100567530 A CN 2011100567530A CN 201110056753 A CN201110056753 A CN 201110056753A CN 102184827 A CN102184827 A CN 102184827A
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Abstract
The invention discloses a method for improving the voltage parameter consistency of filaments of traveling wave tubes. Each filament and a circuit for supplying power to the filament are arranged in a cathode cylinder of a traveling wave tube. The method comprises five specific steps as follows: divider resistors with different resistances are connected in series to filament leads of filament circuits of all traveling wave tubes; therefore, the voltage values of the power supplies for the filament circuits of the traveling wave tubes can meet the requirement of consistency, thus satisfying requirements of users and facilitating automatic operation of the users; and meanwhile, after the divider resistors are connected to the filament leads in series, the difference between cold resistance and thermal resistance of the filament circuits can be reduced during power-on process, surging current can be reduced, and the work stability of the traveling wave tubes can be further improved.
Description
Technical field
The present invention relates to the microwave vacuum field of electronic devices, be specifically related to improve the method for travelling wave tube filament voltage parameter consistency.
Background technology
Travelling wave tube has bandwidth, big, high, the reliability advantages of higher of efficient of gain as the vacuum microwave power amplifying device, has a wide range of applications in all kinds of military microwave transmitters, is described as " heart " of weaponry.
High power travelling wave tube is very complicated parts, and many users can also have wish to go the operation principle of detail knowledge pipe.At this situation, the fault of the manufacturing firm of travelling wave tube in order to avoid causing as far as possible because of user's misoperation, often need sequencing is carried out in the operating process of high power travelling wave tube, promptly the user just can finish the work requirements of travelling wave tube according to the established procedure operation of vendors ship.
What all adopt in the at present used high power travelling wave tube is the indirect-heating hot cathode.Calandria in the indirect-heating hot cathode is exactly a filament, claims heated filament, heater again.Filament is contained in the cathode tube and special power supply circuits is arranged.After energized, electric current flows through filament and produces heat, and its temperature is raise.Filament to working temperature, produces enough electronics emission to ensure negative electrode by thermal radiation and heat conduction heated cathode.
The current emission density of the hot cathode of big emission density and the substrate prescription of negative electrode, soak salt technology, coating technique, assembly technology and heating-up temperature relation is all arranged.And the parameter that can adjust after the pipe exhaust has only heating-up temperature, just regulates by the voltage of regulating heater.
For the work that makes travelling wave tube can sequencing, just require the voltage parameter of every travelling wave tube in full accord, this is a very difficult job, wherein the consistency of filament voltage parameter is the most difficult realization.This is because the cathode current emission density of high power travelling wave tube is generally bigger, its working point generally " flex point " and near, promptly near the point of interface in space charge limited region and temperature limitation district.In this working region, as long as the filament voltage value has very little variation will change the working temperature of negative electrode, thereby cause the cathode emission electric current bigger variation to occur, just will influence the stability of travelling wave tube work.And the filament voltage value is subjected to the influence of a lot of operations easily in the making assembling process of travelling wave tube, causes every travelling wave tube filament voltage value unlikely in full accord.Therefore, at present in real work, for medium power and low power tranvelling wave tube, in operating process, need on each travelling wave tube, indicate the actual lamp filaments magnitude of voltage, the user need be by this magnitude of voltage making alive, and because the actual lamp filaments magnitude of voltage of every travelling wave tube is inconsistent, the user need add different operating voltages to every travelling wave tube, and what mark on every travelling wave tube is a voltage adjusting range, real work voltage is included in wherein, and the user needs repeatable operation, can finish the filament voltage adjustment of travelling wave tube, this has not only increased the complexity of operation, for user's automation mechanized operation brings great inconvenience; Simultaneously since the general working temperature of high-power coupled-cavity TWT filament about 1050 ℃, filament is generally resistant to elevated temperatures tungsten rhenium alloy wire, and the cold resistance of tungsten-rhenium alloy material and thermal resistance have very big variation, the cold resistance resistance is minimum, in adding electric process, surge current can occur, will influence the stability of travelling wave tube work.
Summary of the invention
The object of the present invention is to provide the method that improves travelling wave tube filament voltage parameter consistency, make and travelling wave tube filament voltage rated value unanimity realize the automation mechanized operation the when user uses; Another object of the present invention the influence of surge current to the stability of travelling wave tube work occur for reducing the tungsten-rhenium alloy filament when working.
To achieve these goals, the technical solution used in the present invention is:
Improve the method for travelling wave tube filament voltage parameter consistency, described filament is located at travelling wave tube cathode tube inside, is provided with the loop into described filament power supply in described travelling wave tube cathode tube inside; It is characterized in that: may further comprise the steps:
(1) every travelling wave tube filament voltage value is set at V1;
(2) travelling wave tube is after completing, because a variety of causes causes its filament actual voltage value V2 and V1 certain discreteness can occur, but all can be in a scope;
(3) by testing the actual lamp filaments magnitude of voltage V2 of each travelling wave tube of determining same model;
(4) determine that the filament power supply offers the supply power voltage V3 of travelling wave tube filament loop, the V3 value of every travelling wave tube equates that V3 is greater than V2;
(5) be divider resistance I of filament serial connection of each travelling wave tube, its resistance system of selection is: the voltage of being got on the divider resistance is V4, makes V4+V2=V3, and the supply power voltage V3 of every travelling wave tube equates, satisfies travelling wave tube filament voltage parameter consistency;
Described divider resistance I is carried out whole embedding with isolated high-voltage.
The invention has the advantages that: by the divider resistance of on the heater lead of travelling wave tube filament loop, connecting, can reach consistency, meet customer need, make things convenient for the client to realize automation mechanized operation so that power supply offers the voltage of filament loop; Simultaneously because the resistance value of described divider resistance does not become with temperature, and the resistance value of filament can become with temperature, so add that the temperature variant rate of change of total resistance value of the filament loop of this divider resistance can be less than the filament loop changes in resistance rate that does not add this divider resistance, so can subtract surge current, the working stability performance of travelling wave tube is further enhanced.
Embodiment
Below by description to embodiment, to the specific embodiment of the present invention, be described in further detail, to help those skilled in the art design of the present invention, technical scheme there are more complete, accurate and deep understanding.
Embodiment one
Improve the method for travelling wave tube filament voltage parameter consistency, described filament is located at travelling wave tube cathode tube inside, is provided with the loop into described filament power supply in described travelling wave tube cathode tube inside; It is characterized in that: may further comprise the steps:
(1) choose two same model travelling wave tube, and its filament voltage value is set at V1 is 6.3V;
(2) travelling wave tube is after completing, because a variety of causes causes its filament actual voltage value V2 and V1 certain discreteness can occur, but all can be in a scope;
(3) be respectively 6.1V and 6.5V by testing the actual required magnitude of voltage V2 that determines two same model travelling wave tube filament voltages;
(4) determine that the magnitude of voltage V3 that power supply offers filament loop is 7V;
(5) test by universal instrument, 6.1V the resistance value of itself is 2.9 Ω during filament work, and the filament of 6.5V when work resistance itself is 3.1 Ω, the divider resistance of one 0.43 Ω of serial connection on the lead-in wire of 6.1V filament, divider resistance to 0.43 Ω carries out overall perfusion with isolated high-voltage, know by Ohm's law calculating, power supply offers the voltage that the 7V voltage of filament loop got on this divider resistance be 0.9V, and the voltage of being got on the filament is 6.1V, is the required actual voltage value of this filament work just; The divider resistance of one 0.24 Ω of serial connection on the lead-in wire of 6.5V filament, divider resistance to 0.24 Ω carries out overall perfusion with isolated high-voltage, know by Ohm's law calculating, power supply offers the voltage that the 7V voltage of filament loop got on this divider resistance be 0.5V, and the voltage of being got on the filament is 6.5V, is the required actual voltage value of this filament work just;
From user's angle, more than the magnitude of voltage of filament loop power supply of two travelling wave tube be 7V, in full accord, can realize sequencing.
Because the resistance value of described divider resistance does not become with temperature, and the resistance value of filament can become with temperature, so add that the temperature variant rate of change of total resistance value of the filament loop of this divider resistance can be less than the filament loop changes in resistance rate that does not add this divider resistance, can subtract surge current, the working stability performance of travelling wave tube effectively improves.
Above the present invention has been carried out exemplary description, obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way, as long as adopted the improvement of the various unsubstantialities that method design of the present invention and technical scheme carry out, all within protection scope of the present invention.
Claims (1)
1. improve the method for travelling wave tube filament voltage parameter consistency, described filament is located at travelling wave tube cathode tube inside, is provided with the loop into described filament power supply in described travelling wave tube cathode tube inside; It is characterized in that: may further comprise the steps:
(1) every travelling wave tube filament voltage value is set at V1;
(2) travelling wave tube is after completing, because a variety of causes causes its filament actual voltage value V2 and V1 certain discreteness can occur, but all can be in a scope;
(3) by testing the actual lamp filaments magnitude of voltage V2 of each travelling wave tube of determining same model;
(4) determine that the filament power supply offers the supply power voltage V3 of every travelling wave tube filament loop, the V3 value of every travelling wave tube equates that V3 is greater than V2;
(5) be divider resistance I of filament serial connection of each travelling wave tube, its resistance system of selection is: the voltage of being got on the divider resistance is V4, makes V4+V2=V3, and the supply power voltage V3 of every travelling wave tube equates, satisfies travelling wave tube filament voltage parameter consistency;
Described divider resistance I is carried out whole embedding with isolated high-voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100567530A CN102184827B (en) | 2011-03-10 | 2011-03-10 | Method for improving voltage parameter consistency of filaments of traveling wave tubes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100567530A CN102184827B (en) | 2011-03-10 | 2011-03-10 | Method for improving voltage parameter consistency of filaments of traveling wave tubes |
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| CN102184827A true CN102184827A (en) | 2011-09-14 |
| CN102184827B CN102184827B (en) | 2012-11-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722206A (en) * | 2012-05-17 | 2012-10-10 | 安徽华东光电技术研究所 | Traveling wave tube voltage adjusting method consistent with transmitter power supply |
| CN115101397A (en) * | 2022-07-26 | 2022-09-23 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Method for rapidly powering up backward wave tube for terahertz near field system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05266811A (en) * | 1992-03-23 | 1993-10-15 | Toshiba Corp | Traveling-wave tube |
-
2011
- 2011-03-10 CN CN2011100567530A patent/CN102184827B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05266811A (en) * | 1992-03-23 | 1993-10-15 | Toshiba Corp | Traveling-wave tube |
Non-Patent Citations (1)
| Title |
|---|
| 王斌: "基于UC1901的行波管灯丝电源的设计", 《电源技术应用》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722206A (en) * | 2012-05-17 | 2012-10-10 | 安徽华东光电技术研究所 | Traveling wave tube voltage adjusting method consistent with transmitter power supply |
| CN102722206B (en) * | 2012-05-17 | 2014-08-27 | 安徽华东光电技术研究所 | Traveling wave tube voltage adjusting method consistent with transmitter power supply |
| CN115101397A (en) * | 2022-07-26 | 2022-09-23 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Method for rapidly powering up backward wave tube for terahertz near field system |
| CN115101397B (en) * | 2022-07-26 | 2023-12-22 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Rapid power-up method for return wave tube for terahertz near-field system |
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| Publication number | Publication date |
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| CN102184827B (en) | 2012-11-14 |
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Address after: 241000 No.01 Eshan Road, high tech Development Zone, Yijiang District, Wuhu City, Anhui Province Patentee after: ANHUI HUADONG PHOTOELECTRIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 241000 Anhui Province, Wuhu city Yijiang District South high tech Development Zone Technology Park mansion Patentee before: Anhui Huadong Polytechnic Institute |