UT396 extended type on-site control box applicable to 396-series diesel engines

Abstract

The invention discloses a UT396 extended type on-site control box applicable to 396-series diesel engines. The control box comprises a main control module, a RS485 serial port module, an extension module, a display unit and a monitoring instrument box. According to the UT396 extended type on-site control box applicable to the 396-series diesel engines, a liquid crystal screen or a touch screen isadopted by the display unit; microcontrollers or an integrated type programmable logic controller (PLC) module is adopted by the main control module; the structure is simplified, and the developmentcost is low; matured products are adopted in the PLC module and the extension module; the on-site control box goes through long-term assessment of use of all kinds of industries; reliability is high,and configuration is flexible; modules can be added or subtracted according to the use requirements; and standard-protocol RS485 communication modes are adopted by parameter remote transmission, and compatibility is high.

Description

technical field [0001] The invention belongs to the technical field of diesel engine monitoring, and relates to a diesel engine side control box for a power station. Background technique [0002] At present, the control box next to the 396 series diesel engine has been imported from MTU. Since it is an early product of MTU, its design principle and selected components are outdated. Using the connection method, the wiring is complicated, and it is not suitable for remote data transmission. At the same time, the supply channels are not smooth, and it is difficult to guarantee equipment production. There are also the following problems during use: [0003] (1) The contact of the 24V DC power connector of the circuit board is unreliable; once the circuit board loses power, the unit will stop; [0004] (2) There are too many relay contacts and connector contacts connected in series in the 24V power supply line of the circuit board and the 24V power supply control line of the g...

AI Technical Summary

Problems solved by technology

[0003] (1) The contact of the 24V DC power connector of the circuit board is unreliable; once the circuit board loses power, the unit will stop;

[0004] (2) There are too many relay contacts and connector contacts connected in series in the 24V power supply line of the circuit board and the 24V power supply control line of the governor. Any poor contact of any contact will cause the system to lose power and cause the unit to stop;

[0005] (3) The way the cable is connected to the monitoring box can easily lead to poor contact between the control signal circuit and the power supply line. At present, the external cables connected to the control box enter the box through the stuffing box, and the cable core wires are directly connected to the adapter board.

Due to the large number of connections in the box, the connection can only be carried out at the construction site, and the wiring is messy, which is not easy to check and test

In addition, the hole diameter and spacing of the terminal block of the adapter board are small, and the thicker power core wires are crowded after being connected to the terminal block, which puts a greater stress on the terminal block and is prone to poor contact problems.

[0006] (4) The opening of the instrument display on the monitoring box next to the machine is large, which is susceptible to electromagnetic interference

The electromagnetic shielding function makes the opening size of the whole box large, and the external electromagnetic interference is easy to infiltrate, which will affect the monitoring circuit in it.

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