CN-224228753-U - Safety protection control system of engine

CN224228753UCN 224228753 UCN224228753 UCN 224228753UCN-224228753-U

Abstract

The utility model discloses a safety protection control system of an engine, which comprises an overspeed protection module, a connecting backboard, a logic control output driving module and a three-out-of-two redundancy processing unit, wherein the overspeed protection module is a plurality of identical modules and is respectively connected with an external logic control output driving module and the three-out-of-two redundancy processing unit through the connecting backboard, a power supply and a redundancy supply of the overspeed protection module are connected to a dual-power redundancy processing module, the dual-power redundancy processing module is connected with an internal power supply bus, a total signal acquisition module is connected with the processing unit, the processing unit module is connected with the logic control output driving module, and the logic control output driving module outputs control signals to realize control of external equipment. The system adopts a double redundancy design of a circuit, and improves the reliability and safety of super engine operation by monitoring various states of an engine sensor.

Inventors

YANG BIN
YANG XUN
XUE XIAODONG
ZHANG JINSHENG
ZHANG YIBIN

Assignees

河南柴油机重工有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250619

Claims (6)

1. A safety protection control system of an engine, characterized in that: The system comprises an overspeed protection module, a connecting backboard, a logic control output driving module and a three-out-of-two redundancy processing unit, wherein the overspeed protection module is a plurality of identical modules and is respectively connected with the external logic control output driving module and the three-out-of-two redundancy processing unit through the connecting backboard; The overspeed protection module comprises a dual-power redundancy processing module (10), a processing unit (60), a logic control output driving module (50) and a total signal acquisition module (70), wherein a power supply and a redundancy power supply are connected to the dual-power redundancy processing module (10), the dual-power redundancy processing module (10) is connected with an internal power supply bus, the total signal acquisition module (70) is connected with the processing unit (60), the processing unit (60) is connected with the logic control output driving module (50), and the logic control output driving module (50) outputs control signals to control external equipment.
2. A safety protection control system for an engine according to claim 1, wherein said overspeed protection module is 3 identical modules.
3. The engine safety protection control system according to claim 2, wherein the total signal acquisition module (70) comprises an auxiliary control signal acquisition module (200) and a signal acquisition module (202), the auxiliary control signal acquisition module (200) and the signal acquisition module (202) are respectively connected with the processing unit (60), the auxiliary control signal acquisition module (200) receives auxiliary control signal input to acquire related auxiliary control signals, and the signal acquisition module (202) is specially used for acquiring signals of the rotating speed sensor to provide original signal data for subsequent processing.
4. The system of claim 2, wherein the total signal acquisition module (70) comprises a first conversion module (20), a second conversion module (21), a third conversion module (22), a fourth conversion module (23), a fifth conversion module (24) and a signal processing module (30), the signal processing module (30) is respectively connected with the first conversion module (20), the second conversion module (21), the third conversion module (22), the fourth conversion module (23) and the fifth conversion module (24), the first conversion module (20) receives the control signal and performs conversion processing to provide an adapting signal for the subsequent signal processing module (30), the second conversion module (21) is responsible for converting the engine oil pressure signal so as to analyze the system, the third conversion module (22) converts the encoder signal, the encoder is used for measuring information of the angular position of the engine, the fourth conversion module (23) directly acquires a rotation speed sensor signal to determine the rotation speed signal of the engine, the fifth conversion module (24) converts the frequency signal, the auxiliary power generation frequency is related to the rotation speed of the engine, and the auxiliary power generation frequency is related to the rotation speed of the engine.
5. A safety protection control system of an engine according to claim 3, wherein said processing unit (60) comprises a communication processing module (40), and said processing unit (60) is connected to a communication bus for data interaction with the outside.
6. The system of claim 4, wherein the overspeed protection module further comprises a communication processing module (40), the processing unit (60) is connected to the communication processing module (40), and the communication processing module (40) performs data interaction with the outside via a communication bus.

Description

Safety protection control system of engine Technical Field The utility model relates to the technical field of safety protection control systems of engines, in particular to a safety protection control system of an engine. Background Engines often require overspeed protection to avoid mechanical damage or injury to personnel due to excessive engine speeds. Early diesel engines were relatively simple in construction, and the speed regulation system was also relatively primary, relying primarily on mechanical governors to control rotational speed. The speed regulator regulates the oil supply amount of the oil injection pump by utilizing the movement of mechanical parts such as flyweights and the like through the centrifugal force principle, thereby maintaining the relative stability of the rotating speed of the diesel engine. With the development of electronic technology, electronic overspeed protection devices are gradually developed and widely used. Compared with a mechanical device, the electronic overspeed protection device has higher precision, faster response speed and stronger flexibility, and can be accurately set and adjusted according to different working conditions and diesel engine characteristics. In some special application fields, a medium-high speed high-power engine is needed, and the engine has high rotating speed, high power and high inertia and has higher requirements on safety protection. In order to ensure the emergency running state of the engine, a novel safety protection control system of the engine is required to be arranged to ensure the safety and the effectiveness of an overspeed detection function. Disclosure of Invention The safety protection control system of the engine provided by the utility model adopts a double-redundancy design of a circuit, and improves the reliability and safety of the operation of the engine by monitoring various states of engine sensors. The utility model adopts the following technical scheme that the safety protection control system of the engine comprises an overspeed protection module, a connecting backboard, a logic control output driving module and a three-out-of-two redundancy processing unit, wherein the overspeed protection module is a plurality of identical modules and is respectively connected with the external logic control output driving module and the three-out-of-two redundancy processing unit through the connecting backboard; The overspeed protection module comprises a dual-power redundancy processing module, a processing unit, a logic control output driving module and a total signal acquisition module, wherein a power supply and a redundancy power supply are connected to the dual-power redundancy processing module, the dual-power redundancy processing module is connected with an internal power supply bus, the total signal acquisition module is connected with the processing unit, the processing unit is connected with the logic control output driving module, and the logic control output driving module outputs a control signal to control external equipment. Further, the overspeed protection module is 3 identical modules. Further, the total signal acquisition module comprises an auxiliary control signal acquisition module and a signal acquisition module, and the auxiliary control signal acquisition module and the signal acquisition module are respectively connected with the processing unit; Further, the auxiliary control signal acquisition module receives auxiliary control signal input and acquires relevant auxiliary control signals. The signal acquisition module is specially used for acquiring signals of the rotating speed sensor and providing original signal data for subsequent processing. The total signal acquisition module comprises a first signal conversion module, a second signal conversion module, a third signal conversion module, a fourth signal conversion module, a fifth signal conversion module and a signal processing module, wherein the signal processing module is respectively connected with the first signal conversion module, the second signal conversion module, the third signal conversion module, the fourth signal conversion module and the fifth signal conversion module, and the first signal conversion module receives a control signal and performs conversion processing to provide an adaptive signal for a subsequent signal processing unit. The second signal conversion module is responsible for converting the engine oil pressure signal so as to analyze and process the system. The signal conversion module converts three pairs of encoder signals, and the encoder is used for measuring information of the angular position of the engine. And the signal conversion module is used for directly collecting signals of the rotating speed sensor to determine the rotating speed signals of the engine. And the signal conversion module five converts the power generation frequency signal, the power generation frequency is related to the engine spee