High-power microwave tube collector temperature test system and method

Abstract

The invention provides a high-power microwave tube collector temperature testing system and method, and belongs to the field of vacuum electronic devices, and the system comprises a microwave tube collector temperature testing structure, a temperature detection probe assembly and a temperature detector. And the temperature detection patches are regularly pasted in the grooves on the surface of the collector. The inner water jacket assembly is installed on the collector, and the temperature detection lead penetrates out of the inner water jacket deconcentrator; the outer water jacket assembly is installed on the collector, and the temperature detection lead penetrates out of the outer water jacket deconcentrator. A temperature detection lead is connected to a temperature detector; the water inlet and outlet assembly is installed on the collector. Cooling circulating water sequentially passes through a water inlet of the water inlet and outlet assembly, the outer water jacket assembly, the inner water jacket assembly and a water inlet of the water inlet and outlet assembly. And the collector heated by the electron flow is cooled under the action of the cooling circulating water. The device can accurately test the internal temperature of the microwave tube collector.

Description

Technical Field

[0001] The invention belongs to the field of vacuum electronic devices, and in particular relates to a high-power microwave tube collector temperature testing system and method. Background Art

[0002] High-power microwave tubes in the field of vacuum electronics can generate high-power long-pulse microwave signals, including high-power gyrotrons, high-power klystrons, high-power magnetrons, etc. High-power microwave tubes can output microwave power ranging from tens of kilowatts to tens of megawatts, and their application areas include: nuclear fusion devices, radars, electronic countermeasures, etc. The high-power microwave energy output by high-power microwave tubes is converted from the energy of the electron flow excited by the cathode of the microwave tube. After the electron flow converts part of the energy into microwave energy, the electron flow with the remaining energy bombards the collector of the microwave tube. The remaining electron flow energy is converted into heat energy. Usually, a high-efficiency water-cooling structure is required for the high-power collector to dissipate heat. Prevent the collector from being damaged by excessive energy accumulation. Since the electron injection power bombarding the collector of small and medium-power microwave tubes is low, air cooling and conduction cooling are usually used to solve the problem of heat dissipation of the collector. However, for high-power microwave tubes such as high-power gyrotrons and klystrons, the electron injection bombardment energy is very huge, and the electron injection bombardment on the collector is not evenly distributed, and its distribution law is somewhat different from the simulation data. The collector often burns out or even burns through due to overheating. The collector is usually surrounded by external components such as inner and outer water jackets. Conventional temperature testing methods cannot obtain the temperature distribution of the collector. Therefore, how to obtain the temperature distribution of high-power microwave collectors has become a difficult problem in the design of high-power microwave tubes. Summary of the invention

[0003] To solve the above technical problems, the present invention provides a high-power microwave tube collector temperature testing system and method, which accurately tests the internal temperature of the microwave tube collector, optimizes the design of the gyrotron through the collected temperature information, and achieves the purpose of achieving gyrotron long pulses.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A high-power microwave tube collector temperature test system includes a microwave tube collector temperature test structure, a temperature detection probe assembly and a temperature detector; temperature detection patches are pasted in the groove on the surface of the microwave tube collector at equal intervals using waterproof thermal conductive glue. The inner water jacket assembly is installed on the collector, and the temperature detection lead passes through the inner water jacket splitter; the outer water jacket assembly is installed on the collector, and the temperature detection lead passes through the outer water jacket splitter. The temperature detection lead is connected to the temperature detector; the inlet and outlet water assembly is installed on the collector. Cooling circulating water passes through the water inlet of the inlet and outlet water assembly, the outer water jacket assembly, the inner water jacket assembly, and the water outlet of the inlet and outlet water assembly in sequence. The collector heated by the electron flow is cooled down by the cooling circulating water. The temperature detection probe displays the temperature information of the test position on the temperature detector, so as to achieve the purpose of detecting the internal temperature of the collector.

[0006] Furthermore, the microwave tube collector temperature test structure includes a microwave tube collector, an inner water jacket assembly, an outer water jacket assembly, and a water inlet and outlet assembly.

[0007] Furthermore, the temperature detection patch is regularly pasted in the groove on the surface of the microwave tube collector with waterproof thermal conductive adhesive, the inner water jacket assembly is installed on the microwave tube collector, and the temperature detection lead passes through the inner water jacket divider; the outer water jacket assembly is installed on the microwave tube collector using a water drain seal ring B and a screw B, and the temperature detection lead then passes through the outer water jacket divider.

[0008] Furthermore, a waterproof sealing ring C is used between the water inlet and outlet assembly and the inner water jacket assembly; a waterproof sealing ring D is used between the water inlet and outlet assembly and the outer water jacket assembly; and then the water inlet and outlet assembly is tightened with screws C to ensure watertightness.

[0009] Furthermore, the temperature detection patch can detect a temperature range between 0°C and 500°C, the lead wire is made of waterproof material, and the plug is connected to the temperature detector.

[0010] The present invention also provides a method for testing the collector temperature of a high-power microwave tube, comprising the following steps:

[0011] Step 1: Use waterproof thermal conductive adhesive to stick the temperature detection patches at equal intervals in the groove on the surface of the microwave tube collector, install the inner water jacket assembly on the microwave tube collector, and pass the temperature detection lead through the inner water jacket splitter.

[0012] Step 2: Use the water-draining seal B and screw B to install the outer water jacket assembly on the collector of the microwave tube, and then pass the temperature detection lead through the outer water jacket splitter.

[0013] Step 3: Use waterproof seal ring C between the water inlet and outlet assembly and the inner water jacket assembly; use waterproof seal ring D between the water inlet and outlet assembly and the outer water jacket assembly. Then use screw C to tighten the water inlet and outlet assembly to ensure watertightness.

[0014] Step 4: The cooling circulating water passes through the water inlet of the water inlet and outlet assembly, the outer water jacket assembly, and the inner water jacket assembly in sequence, and finally flows out from the water outlet of the water inlet and outlet assembly.

[0015] Step 5. Power on the gyrotron and conduct a long pulse test on the gyrotron. The temperature of the collector of the microwave tube begins to rise due to electron bombardment and reaches temperature equilibrium under the action of cooling circulating water. The temperature detection patch transmits the temperature information of this position to the temperature detector and records the temperature values ​​of all positions at the same time.

[0016] Step 6. Stop powering the gyrotube, and remove the water inlet and outlet components, outer water jacket components, and inner water jacket components in order; remove all temperature detection patches and replace the temperature detection position.

[0017] Step 7: Repeat steps 1 to 6 until all the collector temperature test positions are tested.

[0018] Beneficial effects:

[0019] According to the temperature test accuracy requirements, the present invention can reduce the distance between two adjacent temperature detection patches to obtain a more accurate temperature distribution. Since the collector is inside the outer water jacket assembly and the inner water jacket assembly, the conventional temperature measurement method cannot test the temperature of the collector surface, which brings great difficulties to the design of the microwave tube collector. The present invention can accurately measure the temperature of the collector surface in the working state of the microwave tube, and use a temperature patch to convert the temperature parameter into an electrical signal transmission temperature detector to obtain the distribution of the collector surface temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a high-power microwave tube collector temperature testing system of the present invention;

[0021] Figure 2 Another schematic diagram of the high-power microwave tube collector temperature testing system of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the microwave tube collector temperature detection line.

[0023] Among them, the accompanying drawings are marked as: 1-high-power microwave tube collector temperature test system, 10-microwave tube collector temperature test structure; 20-temperature detection probe assembly, 30-temperature detector, 11-microwave tube collector; 12-inner water jacket assembly, 13-outer water jacket assembly, 14-water inlet and outlet assembly; 15-filament power lead; 16-cathode power lead; 17-anode power lead; 18-cathode assembly; 19-high-frequency generator; 111-waterproof sealing ring A, 112-screw A, 113-waterproof sealing ring B, 114-screw B, 115-inner water jacket splitter, 116-outer water jacket splitter, 117-waterproof sealing ring C, 118-waterproof sealing ring D, 119-screw C; 211-temperature detection patch, 212-temperature detection lead, 213-plug. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1-Figure 3 As shown, the high-power microwave tube collector temperature test system 1 of the present invention comprises a microwave tube collector temperature test structure 10, a temperature detection probe assembly 20 and a temperature detector 30. The microwave tube collector temperature test structure 10 realizes the testability of the collector surface temperature; the temperature detection probe assembly 20 can convert the collector surface temperature into a detectable electrical signal, and display real-time temperature information through the temperature detector 30. The temperature detection patch 211 in the temperature detection probe assembly 20 is pasted on the collector surface, led out through the temperature detection lead 212, and connected to the temperature detector 30.

[0026] The microwave tube collector temperature test structure 10 includes a microwave tube collector 11, an inner water jacket assembly 12, an outer water jacket assembly 13, and a water inlet and outlet assembly 14. The microwave tube collector 11 and the outer water jacket assembly 13 are fixed by a waterproof seal ring B 113 and a screw B 114; the water inlet and outlet assembly 14 and the inner water jacket assembly 12 are sealed and connected by a waterproof seal ring C117; the water inlet and outlet assembly 14 and the outer water jacket assembly 13 are sealed and connected by a waterproof seal ring D 118, and then the water inlet and outlet assembly 14 is pressed by a screw C 119 to ensure watertightness. The filament power supply lead 15 and the cathode power supply lead 16 are powered by an external filament power supply, and the cathode assembly 18 is heated to a certain temperature to release electron flow; the anode power supply lead 17 is connected to an external anode power supply, and the electron flow passes through the high-frequency generator 19 at high speed under the action of the anode high voltage to generate microwave energy, and then hits the microwave tube collector 11.

[0027] like Figure 2 , Figure 3 As shown, the temperature detection patches 211 are pasted at equal intervals in the surface grooves of the microwave tube collector 11 with waterproof thermal conductive adhesive, the inner water jacket assembly 12 is installed on the microwave tube collector 11, and the temperature detection lead 212 passes through the inner water jacket divider 115; the outer water jacket assembly 13 is installed on the microwave tube collector 11 using a water-draining sealing ring B 113 and a screw B 114, and the temperature detection lead 212 then passes through the outer water jacket divider 116.

[0028] The water inlet and outlet assembly 14 and the inner water jacket assembly 12 are sealed with a waterproof seal ring C 117; the water inlet and outlet assembly 14 and the outer water jacket assembly 13 are sealed with a waterproof seal ring D 118. Then the water inlet and outlet assembly 14 is pressed tightly with screws C 119 to ensure watertightness.

[0029] like Figure 3 As shown, the temperature detection patch 211 can detect a temperature range between 0°C and 500°C, the temperature detection lead 212 is made of waterproof material, and the plug 213 is connected to the temperature detector 30.

[0030] Connect the temperature detection lead 212 to the temperature detector 30; install the water inlet and outlet assembly 14 on the inner water jacket assembly 12 and the outer water jacket assembly 13, and fix the three with waterproof seal ring C 117, waterproof seal ring D 118, and screw C 119. The cooling circulating water passes through the water inlet of the water inlet and outlet assembly 14, the outer water jacket assembly 13, the inner water jacket assembly 12, and the water outlet of the water inlet and outlet assembly 14 in sequence. The cooling circulating water cools down the microwave tube collector 11 heated by the electron flow. The temperature detection probe assembly 20 displays the temperature information of the test position on the temperature detector 30, so as to achieve the purpose of detecting the surface temperature of the microwave tube collector 11.

[0031] The present invention also provides a method for testing the collector temperature of a high-power microwave tube, comprising the following steps:

[0032] Step 1: Use waterproof thermal conductive adhesive to stick the temperature detection patches 211 at equal intervals in the grooves on the surface of the microwave tube collector 11, install the inner water jacket assembly 12 on the microwave tube collector 11, and let the temperature detection lead 212 pass through the inner water jacket divider 115.

[0033] Step 2: Use the water-draining sealing ring B 113 and the screw B 114 to install the outer water jacket assembly 13 on the microwave tube collector 13, and then the temperature detection lead 212 passes through the outer water jacket splitter 116.

[0034] Step 3: The water inlet and outlet assembly 14 and the inner water jacket assembly 12 are sealed with a waterproof seal ring C 117; the water inlet and outlet assembly 14 and the outer water jacket assembly 13 are sealed with a waterproof seal ring D 118. Then, the water inlet and outlet assembly 14 is tightened with screws C119 to ensure watertightness.

[0035] Step 4: The cooling circulating water passes through the water inlet of the water inlet and outlet assembly 14 , the outer water jacket assembly 13 , and the inner water jacket assembly 12 in sequence, and finally flows out from the water outlet of the water inlet and outlet assembly 14 .

[0036] Step 5, power on the microwave tube, power on the filament power lead 15 and the cathode power lead 16 to heat the cathode to generate electron flow, power on the anode power lead to accelerate the electron flow to generate microwave power through high frequency, and carry out gyrotron long pulse test. The temperature of the microwave tube collector 11 begins to rise due to electron bombardment, and reaches temperature equilibrium under the action of cooling circulating water. The temperature detection patch 211 transmits the temperature information of the position to the temperature detector 30, and records the temperature values ​​of all positions at the same time.

[0037] Step 6: Stop powering the gyrotube, and remove the water inlet and outlet assembly 14, the outer water jacket assembly 13, and the inner water jacket assembly 12 in order; remove all the temperature detection patches 211, and replace the temperature detection position.

[0038] Step 7: Repeat steps 1 to 6 until all the collector temperature test positions are tested.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high power microwave tube collector temperature test system, characterized in that: The invention comprises a microwave tube collector temperature test structure (10), a temperature detection probe assembly (20) and a temperature detector (30); the temperature detection probe assembly (20) converts the temperature of the microwave tube collector surface of the microwave tube collector temperature test structure (10) into a detectable electrical signal, and displays real-time temperature information through the temperature detector (30); the temperature detection patch (211) in the temperature detection probe assembly (20) is adhered to the microwave tube collector surface, led out through a temperature detection lead (212), and connected to the temperature detector (30) to detect the internal temperature of the microwave tube collector.

2. A high power microwave tube collector temperature test system according to claim 1, characterized in that: The microwave tube collector temperature test structure (10) comprises a microwave tube collector (11), an inner water jacket assembly (12), an outer water jacket assembly (13), and an inlet and outlet water assembly (14); cooling circulating water sequentially passes through a water inlet of the inlet and outlet water assembly (14), the outer water jacket assembly (13), the inner water jacket assembly (12), and a water outlet of the inlet and outlet water assembly (14); under the action of the cooling circulating water, the microwave tube collector heated by the electron flow is cooled.

3. A high power microwave tube collector temperature test system according to claim 2, characterized in that: The microwave tube collector (11) and the outer water jacket assembly (13) are fixed by means of a waterproof sealing ring B (113) and screws B (114).

4. A high power microwave tube collector temperature test system according to claim 2, characterized in that: The water inlet and outlet assembly (14) and the inner water jacket assembly (12) are sealed and connected by a waterproof sealing ring C (117); the water inlet and outlet assembly (14) and the outer water jacket assembly (13) are sealed and connected by a waterproof sealing ring D (118), and then the water inlet and outlet assembly (14) is tightened by a screw C (119) to ensure watertightness.

5. A high power microwave tube collector temperature testing system according to claim 2, characterized in that: The filament power lead (15) and the cathode power lead (16) are powered by an external filament power supply to heat the cathode assembly (18) to a certain temperature and release electron flow.

6. A high power microwave tube collector temperature testing system according to claim 2, characterized in that: The anode power supply lead (17) is connected to an external anode power supply. Under the action of the anode high voltage, the electron flow passes through the high frequency (19) at high speed to generate microwave energy, and then hits the microwave tube collector (11).

7. A high power microwave tube collector temperature testing system according to claim 2, characterized in that: The temperature detection patch (211) is regularly adhered to the groove on the surface of the microwave tube collector (11) using waterproof thermal conductive adhesive, the inner water jacket assembly (12) is installed on the microwave tube collector (11), and the temperature detection lead (212) passes through the inner water jacket splitter (115) and then passes through the outer water jacket splitter (116).

8. A high power microwave tube collector temperature testing system according to claim 2, characterized in that: The detection temperature range of the temperature detection patch (211) is 0°C to 500°C.

9. A high power microwave tube collector temperature testing system according to claim 2, characterized in that: The lead wire (212) is made of waterproof material, and the plug (213) is connected to the temperature detector (30).

10. A method for testing the collector temperature of a high-power microwave tube, characterized in that: The steps include: Step 1: Use waterproof thermal conductive adhesive to regularly stick the temperature detection patch (211) into the groove on the surface of the microwave tube collector (11), install the inner water jacket assembly (12) on the microwave tube collector (11), and pass the temperature detection lead (212) through the inner water jacket splitter (115); Step 2: Using the water-draining seal ring B (113) and the screw B (114), the outer water jacket assembly (13) is installed on the microwave tube collector (11), and the temperature detection lead (212) then passes through the outer water jacket splitter (116); Step 3: Use a waterproof seal ring C (117) between the water inlet and outlet assembly (14) and the inner water jacket assembly (12); use a waterproof seal ring D (118) between the water inlet and outlet assembly (14) and the outer water jacket assembly (13), and then use screws C (119) to tighten the water inlet and outlet assembly (14) to ensure watertightness; Step 4: The cooling circulating water passes through the water inlet of the water inlet and outlet assembly (14), the outer water jacket assembly (13), and the inner water jacket assembly (12) in sequence, and finally flows out from the water outlet of the water inlet and outlet assembly; Step 5: Power on the gyrotron and conduct a gyrotron long pulse test. The temperature of the microwave tube collector (11) begins to rise due to electron bombardment and reaches temperature equilibrium under the action of cooling circulating water. The temperature detection patch (211) transmits the temperature information of the position to the temperature detector (30), and records the temperature values ​​of all positions at the same time. Step 6: Stop powering the gyrotube, and remove the water inlet and outlet assembly (14), the outer water jacket assembly (13), and the inner water jacket assembly (12) in order; remove all the temperature detection patches (211), and replace the temperature detection position; Step 7: Repeat steps 1 to 6 until all the collector temperature test positions are tested.

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