SJ 1723-1981 RX-32 type microwave gas discharge tube SJ1723-1981 standard download decompression password: www.bzxz.net
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Standard of the Fourth Machinery Industry Department of the People's Republic of China RX-32 Microwave Gas Discharge Tube SJ1723-81 Standard of the Fourth Machinery Industry Department of the People's Republic of China RX--32 Microwave Gas Discharge Tube SJ1T23-81 This standard applies to RX-32 microwave gas discharge tube (hereinafter referred to as switch tube): the tube is the pre-protection switch tube of the 10cm band receiver and is used in the radar equipment of the 72.14mm×34.04mm waveguide system. This standard is a supplement to SJ343-73 "General Technical Conditions for Microwave Gas Discharge Tubes" (hereinafter referred to as general technical conditions). Except for the contents specified in this standard, the rest shall be implemented in accordance with the relevant provisions of the general technical conditions. 1. The outer dimensions of the switch tube shall comply with the provisions of the outer dimensions (Figure 1). 2. The parameters of the switch tube shall comply with the provisions of the parameter specification table. 3. Test of glass and metal sealing quality (SJ343-73, Article 5 (1)) Take 5 switch tubes (switch tubes with the same process and qualified total leakage power but unqualified other parameters are allowed) for single test. After the test, the glass should not burst and the leakage power is within the grid, then the test is qualified; if more than one is unqualified, it is considered as routine test failure. If only one is unqualified, 5 more tubes are allowed to be retested. All 5 tubes should be qualified and the test is qualified. Otherwise, the test is unqualified (all samples that have passed this test are not allowed to leave the factory). 4. High temperature test of switch tubes is to place the non-working switch tubes at an ambient temperature of 70±2℃ for 2 hours, and then let them stand at room temperature for 2 hours. There should be no mechanical damage, coating peeling and metal parts rust. The model and other markings should be clear and firm, and the total leakage power should meet the requirements of the parameter specification table. 5. Impact test: acceleration is 6g, impact frequency is 60 times/min, and impact is 500 times in vertical and horizontal directions respectively. 6. For the sealing test of the switch tube cooler, one end of the connecting tube is closed and the other end is connected to air at two atmospheric pressures. It is immersed in water for 3 minutes and no bubbles should appear. 7. The amplitude recovery time is calculated based on the attenuation of the switch tube to the receiving signal of 3dB. 8. The weight of the switch tube is checked once a year. 9. During the life test, the standard parameters of the life test are tested at 125, 188, 210, 220, 225, and 250 hours respectively. SJ1723-81 10. When the output of the switch tube is less than 100 per quarter (or for three consecutive months), the routine test shall be carried out once every six months (or for six consecutive months). The acceptance rules shall be carried out in accordance with Articles 17, 18 and 19 of the General Technology (SJ343-73). 11. When the output of switch tubes is less than 100 per quarter (or for three consecutive months), the life test shall be carried out once every six months (or for six consecutive months), and the acceptance rules shall be carried out in accordance with Articles 22 and 23 of the General Technology (SJ943-79). 12. When using switch tubes, soft metal washers should be added to their connection surfaces to ensure good electrical contact. 13. Switch tubes should be forced to cool when in use. When subjected to a pulse power of 2MW or an average power of 3kW, the switch tube must be cooled with water with a flow rate of not less than 0.B liters/minute, and air with a flow rate of not less than 20 liters/minute should be supplied through a 5mm hole on the waveguide wall opposite the switch tube input window for cooling. 14. Articles 3, 5 (2), 7 (2) and 10 of SJ343-73 are not applicable to this standard. Appendix: Schematic diagram of life test. 65amax SJ1723—81 Model 44.5±050 Note: Size 4.2mm self-cooling i.e. 43mm is allowed within 15mm of the bend beside the device. Appearance drawing of RX-32 microwave gas discharge tube Total 6 pages Page 3www.bzxz.net Acid test categories and items Parameters and test names Appearance Size Total surge power Voltage standing wave coefficient Voltage standing wave coefficient Recovery time Total insertion loss Total insertion loss Maximum leakage power Vibration strength test Assessment standard Voltage standing wave coefficient Voltage standing wave coefficient Total leakage power Impact test Assessment standard Voltage standing wave coefficient Voltage standing wave coefficient Total leakage power Heat test in non-working state Assessment standard Leakage input power Non-working device test Assessment standard Total leakage power Wet test in non-working state Assessment standard|| tt||Total leakage power sequence SJ1723-81 RX-32 sub-photographing gas discharge tube parameter frequency range table Chen Chonggong Department 3e00t5 Repetition frequency Except the whole seat ±10±200 387(1) 387(1) 387(1) 3 87(1) 387(1) 38741) Acceptance rules Total 6 pages Page 5 Test categories and items Parameters and test names Cooler tightness test L,X glass and metal joint quality test Assessment standards Total leakage power Packaging skin drop test|| tt||Assessment standard Voltage standing wave coefficient Voltage standing wave coefficient Total width overshoot rate Transportation color short test Assessment standard Voltage standing wave coefficient Voltage standing wave coefficient Total overshoot rate Life assessment standard Total leakage power Amplitude recovery time Total insertion loss|| tt||Preheating conditions U.S. units SJ1723--81. RX-32 microwave gas discharge parameter specification meter Position Pulse power Repetition rate Impulse intensity Test method 387(1) ±50±0.3 Wang 10l||tt ||±10±200 Use limit position No. PHP 087(1) 387(1) Test rules Note: ① To measure the total overload rate and the maximum overload power, the excitation frequency of the time delay test is allowed to be within the range of 2600~2800MHZ, and the excitation frequency of the life test is allowed to be within the range of 2600~2800MHZ. Appendix: SJ1723-81 Life test diagram Control panel Water inlet pipe Five RX-32 Five air outlets Total 6 pages, page 6 Air outlet High power yellow embedded Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.