Mud Pump Shandong Qingneng Power Co., Ltd. , https://www.steamturbine.be
 XJZC series intelligent speed/impact monitoring protection instrument, matched with speed sensor, gear speed and speed sensor, accurate measurement, stable performance, can expand the function according to the needs of the user; match the impact sensor is mainly used to monitor the record when the impactor throws Turbine speed. The monitor has functions such as rotation speed measurement, two-level alarm, overspeed protection, analog voltage and current output, sensor fault monitoring, alarm query, and self-check.
Before the new unit is put into operation or the unit is overhauled and connected to the grid, the speed of the impact motion must be measured. In order to prevent the striker from sticking, the manufacturer stipulates that the unit should perform a pilot fuel injection activity test after 2000 hours of continuous operation. However, the location of the emergency circuit breaker can neither observe the state of its “attack†or “retract†of the impactor, nor can it determine the rotation speed of the impactor.
Turbine speed/percussion sub-monitor, using microcomputer intelligent technology, solved the problem of speed monitoring and impact sub-monitoring. It usually displays the turbine speed and captures the "highest" speed of the recording unit. When the critical breaker hits the "shot" When “retractâ€, the internal memory function stores the rotation speeds “punched out†and “retracted†in the meter. By pressing the “SET†button on the panel, you can easily display the “highest†and “highest†in the display window. The speed at which "" and "retract" are hit.
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Technical Parameters:
1, measurement input (1) speed signal: speed sensor speed signal amplitude 50mV ~ 20V (RMS), frequency response 0.5 ~ 15KHz;
(2) Impactor 1 signal: speed sensor signal or Hall sensor;
(3) Impactor 2 signal: speed sensor signal or Hall sensor;
2. Parameter setting (1) Number of teeth: 1～120 (change ratio of signal pulse number and rotation speed value. When the number of teeth = 60, the minimum measurable is 0.5 rev/min, and when the number of teeth is =1, the minimum is only 30 rpm, Factory set to 60);
(2) Alarm value: Level 2 alarm. The factory set alarm I to 3300 rpm and alarm II to 3360 rpm.
(3) Alarm delay: It can be set from 1 to 200 seconds, usually 1 second, according to the user's requirements.
3, measurement display (1) display: four 0.8 inch LED digital display XXXX & rpm, no value high hidden, such as XXX rpm;
(2) Span: 1～9999&rpm, beyond 9999 display 1---;
(3) Resolution: ±1 rpm;
4. Measurement output (1) Current: 4～20mA current proportional to speed value, accuracy ±1%, load ≤500Ω;
(2) Opening volume: output alarms I, II and impactor 1#, 2#, etc. 4 relay normally open contacts, close when the event occurs, contact capacity is 2A/250V AC or 1A/28V DC;
5, warning signal panel set the alarm I, II and impact sub 1 #, 2 # light, the event occurs, the corresponding indicator light.
6. Environmental requirements (1) Operating environment: Temperature 0°C to +50°C, relative humidity <90% No condensation, no corrosion, no strong magnetic field;
(2) storage environment: temperature -30 °C ~ +60 °C, relative humidity <90% no condensation, no corrosion, no strong magnetic field;
2, the main function
2.1 has a speed measurement display function, the maximum speed of 45,000 rev / min, 5 digital display.
2.2 Alarm function, when the measured positive rotation speed exceeds any alarm setting value, the corresponding alarm indicator on the front panel lights up, and the switch signal is output at the rear panel to protect the monitored equipment; when the impactor throws out, the corresponding alarm indicator on the front panel lights up. , Output switch signal at the rear panel.
2.3 has a current output interface, can be connected with computers and other equipment.
2.4 Parameters can be set via the front panel keys.
3, technical parameters
3.1 Measurement range: -19999 to 45,000 rpm;
3.2 Accuracy: ± 0.02% × n (n is the value of the display instrument r / min) ± 1 word;
3.3 input signal: S-CZ speed sensor;
3.4 Relay output contact voltage/current: AC220V/3A, DC28V/3A.
3.5 Output interface: The output is proportional to the full-scale range of the speed monitor (0-45000 rpm) Current: 4 to 20mA Load ≤ 500Ω
3.6 Working Environment: A. Temperature: 0～+60°C B. Relative humidity: ≤80% C. No strong magnetic field interference around. D. No corrosive gas around
XJZC-03A/Q Intelligent Speed ​​Impactor Monitor Protection Device