A diesel engine pressure detection signal integrated input and output device

Abstract

A pressure detecting signal integration input / output device for a diesel engine comprises a plurality of signal input detecting combining bodies, a middle wiring box, an operation detecting pipe and a cable, which are integrated and mounted on an integration operation plate; the signal input detecting combining bodies are formed by pressure sensors for detecting fluid pressure and test valve blocks for performing function detecting on the pressure sensors; the pressure sensors are connected with the middle wiring box by the cable and output a pressure detecting signal; the test valve blocks are connected with a pipeline with a pressure detecting point by the operation detecting pipe; the pressure sensors are communicated with the inner cavities of the test valve blocks; the operation detecting pipe guides fluid in the pipeline to the signal input detecting combining bodies for the pressure sensors to detect the pressure; the middle wiring box is connected with an external detecting alarm system and transmits the pressure detecting signal; the cable is fixedly distributed on the integration operation plate. The pressure detecting signal integration input / output device for the diesel engine has the advantages of compact structure, good shockproof property, high stability, safety and convenience in operation, and capability of detecting the function of the pressure sensors.

Description

technical field [0001] The invention relates to a transmission device for detection signals, in particular to an integrated input and output device for pressure detection signals of a diesel engine, which belongs to the technical field of diesel engines. Background technique [0002] The pressure detection signal of each system of marine diesel engine is an important indicator source reflecting the operating status of each system, which is indispensable and decisive in the operation of diesel engine. The pressure detection element collects the operating pressure signal parameters of various systems and auxiliary engines such as fuel oil, lubricating oil, cooling water, and gas on the diesel engine, and sends feedback to the ship command center, providing an important basis for the crew to control the ship's operation for real-time monitoring Diesel engine status, and assist the ship's operation system to realize automatic control such as alarm, speed reduction, and parking. ...

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Problems solved by technology

[0004] Practice has proved that there are some problems in the current pressure signal detection system on the marine diesel engine with pressure sensors separately installed in each pipeline: first, it is inconvenient to install, maintain and disassemble, because some pipelines on the diesel engine are distributed in The pressure sensor socket is also in an inconvenient position at a position higher or farther away from the platform, which must be reached with the help of climbing tools, which not only increases the workload and difficulty of installation and disassembly, but also increases the safety of personnel during the operation. It is not high. In addition, the limitation of space makes it difficult to route the cables on the diesel engine and arrange the cable trays. Secondly, it is impossible to perform function detection of the pressure sensor. The current structure does not have a function detection port, and it is impossible to manually verify the pressure sensor. Is it normal? Again, the shock resistance is poor. Since more pipelines are arranged on the edge of the diesel engine or suspended in the air, the vibration of the pipeline is more obvious than the diesel engine itself and it is difficult to overcome. The pressure sensor directly placed on the vibrating pipeline will cause the input signal to be unstable. At the same time, the vibration will shorten the service life of the pressure sensor, thereby increasing the maintenance cost; thirdly, the output accuracy and stability of the pressure detection signal will decrease. Due to the long signal transmission distance, the detection signal will weaken in advance, and the damage of the cable will also Causes errors or lack of signals; finally, installation and maintenance costs are high, pressure sensors are directly arranged on each pipeline, and cables need to be connected from the measurement point to the junction box in the middle of the diesel engine, resulting in waste of cables and cable trays. Cable routing is not only inconvenient but also costly

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