Composite hydraulic control system of blast-furnace top distributing device

A technology of hydraulic control system and distributor, which is applied in the direction of blast furnace, blast furnace details, furnace, etc., can solve the problems of distributor jamming, aggravating the impact and wear of guide wheels and guide rails, and increasing manufacturing costs, so as to reduce impact and wear , Reduce synchronization error, improve cloth accuracy

Active Publication Date: 2010-06-09
CISDI ENG CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

In this control mode, the control accuracy of the distributor mainly depends on the size of the gap between the guide wheel installed on the support ring and the guide rail installed on the shell. The gap between the guide rail and the guide wheel is small. In fact, this method is difficult to ensure the accuracy of the cloth. Because the gap between the guide rail and the guide wheel is reduced, it will increase the difficulty...

Method used

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  • Composite hydraulic control system of blast-furnace top distributing device
  • Composite hydraulic control system of blast-furnace top distributing device
  • Composite hydraulic control system of blast-furnace top distributing device

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Embodiment Construction

[0017] The specific implementation of the present invention will be further described below in conjunction with accompanying drawing:

[0018] Such as figure 2 Shown:

[0019] The separate closed-loop control loops are divided into three groups: the first set of separate closed-loop control loops includes: the P port of the proportional valve 1-1 is connected to the external oil inlet pipeline through the first hydraulic control check valve 3-1, and the T port of the proportional valve 1-1 Port A of the proportional valve is connected to the rodless cavity of the hydraulic cylinder 7-1 through the internal oil passage of the integrated block after passing through the second hydraulic control check valve 3-2; port B of the proportional valve 1-1 The port passes through the third hydraulic control check valve 3-3 and then connects to the rod cavity of the hydraulic cylinder 7-1 through the internal oil passage of the integrated block; the pressure oil at the P port of the prop...

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Abstract

The invention discloses a composite hydraulic control system of a blast-furnace distributing device. The control system comprise an independent closed-loop control loop, at least one centralized control loop and at least one switching loop, wherein the independent closed-loop control loop is used for controlling each hydraulic cylinder and realizing single-position closed-loop control of each hydraulic cylinder and position dynamic compensating control of the three hydraulic cylinders during the motion of the distributing device; the at least one centralized control loop controls the three hydraulic cylinders when the independent closed-loop control loop can not work normally; and the at least one switching loop can realize the automatic switching between the independent closed-loop control loop and the centralized control loop. The invention can not only improve the off-position precision of the distributing device cylinder, but also ensure that the cylinders are synchronous during the angle-variable change process of the distributing device, thereby improving the distribution precision of a blast furnace and simultaneously ensuring that the reliability and the security of the whole control system are greatly improved by adopting composite control.

Description

technical field [0001] The invention belongs to the technical field of metallurgical machinery, and discloses a composite hydraulic control system for a top distributor of a blast furnace, which is used for controlling the material distribution process of a bellless top of a blast furnace. Background technique [0002] The control of the blast furnace roof distributor is a key link in the blast furnace distribution system, and its control accuracy directly affects the distribution accuracy of the blast furnace distribution system. Most of the existing distributors adopt a simple centralized hydraulic control method, that is, one valve controls the actions of three hydraulic cylinders, and the hydraulic oil in the three hydraulic cylinders can move in series with each other. In this control mode, the control accuracy of the distributor mainly depends on the size of the gap between the guide wheel installed on the support ring and the guide rail installed on the shell. The ga...

Claims

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Application Information

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IPC IPC(8): F15B11/16C21B7/18
CPCF27B1/10C21B7/20C21B5/006
Inventor 刘勋吴卫李军丁常红赵渭康郑军王劲松
Owner CISDI ENG CO LTD
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