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Method for adjusting electrical control parameters of proportioning valves of double-cylinder hydraulic gate hoist

A proportional control valve, hydraulic gate technology, applied in marine engineering, construction, barrage/weir, etc., can solve problems such as protective shutdown of hydraulic hoists, achieve obvious deviation correction effect, reduce shutdown frequency, and run smoothly and stably. Effect

Active Publication Date: 2015-04-08
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology

[0006] In order to solve the problem that the frequent activation of the synchronous deviation correction function of the current double-cylinder hydraulic gate hoist may easily cause the protective shutdown of the hydraulic gate hoist, the present invention provides a dual-cylinder hydraulic gate hoist proportional adjustment valve electrical control parameter that can quickly and accurately correct the deviation Adjustment method

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  • Method for adjusting electrical control parameters of proportioning valves of double-cylinder hydraulic gate hoist
  • Method for adjusting electrical control parameters of proportioning valves of double-cylinder hydraulic gate hoist
  • Method for adjusting electrical control parameters of proportioning valves of double-cylinder hydraulic gate hoist

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[0042] Example: After the correction function is activated, the ΔH value continues to increase, and the three-level correction voltage U 3 According to the change rate of ΔH, according to the three-level correction voltage U 3 Calculation formula, U=9V; end adjustment. The adjustment voltage value of the proportional valve is the three-level correction voltage value U 3 See the relationship between the stroke deviation time of the double cylinder Figure 5 In the figure, the three stages ΔH1', ΔH2', and ΔH3' of the difference between the strokes of the piston rods of the two cylinders correspond to dΔH1 / dΔt=2, dΔH2 / dΔt=3, and dΔH3 / dΔt=4, respectively. The three-level correction voltage values ​​are U1', U2', U3'

[0043] 9) After the correction function is activated, when the difference between the strokes of the piston rods of the two oil cylinders ΔH≤1 is detected, the correction function should be stopped, and the piston rods of the two oil cylinders will achieve the effect of ...

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Abstract

The invention discloses a method for adjusting electrical control parameters of proportioning valves of a double-cylinder hydraulic gate hoist. Voltage adjusting valves of the proportioning valves of a left oil cylinder and a right oil cylinder are controlled by a PLC (programmable logic controller) of the double-cylinder hydraulic gate hoist to further realize control and acquisition of strokes of piston rods of the left and right oil cylinders. When a stroke difference delta H of the piston rods of the left and right oil cylinders is larger than an allowable deviation threshold delta H1 the strokes of the two cylinders, the proportioning valve in any one of the oil cylinders is adjusted, and voltage values are changed according to change conditions of the acquired stroke difference delta H of the piston rods of the left and right oil cylinders in each deviation change rate examination period until the stroke difference delta H of the piston rods of the left and right oil cylinders is smaller than or equal to the allowable deviation threshold delta H1 the strokes of the two cylinders. The method for adjusting the electrical control parameters of the proportioning valves of the double-cylinder hydraulic gate hoist has the advantages that effectiveness in deviation correction is achieved, a deviation correction function equation is easy to implement by means of PLC (programmable logic controller) programming, and accordingly reliability in operation of a gate is guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of gate synchronization correction control in the technical field of automatic control of gate hoists, and specifically refers to a method for adjusting the electrical control parameters of the proportional regulating valve of a double-cylinder hydraulic gate hoist, which can effectively control the double-cylinder hydraulic opening and closing The stroke difference between the two cylinders of the machine is within the allowable range of the gate operation to ensure the safe and reliable operation of the gate Background technique [0002] Large and medium-sized gates are important facilities in water conservancy projects, and play a key role in flood control, drought resistance, and water supply applications. The gate hoist generally uses hydraulic hoist, especially the gate with large size and large lifting point spacing uses double-cylinder hydraulic hoist. [0003] In the practice of water conservancy and hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/20
CPCE02B7/20
Inventor 曹阳邵建雄易先举方焱彬秦雅岚潘祥园
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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