A steel pipe water quenching device compression hydraulic control circuit
A technology of control circuit and water quenching, which is applied in the direction of fluid pressure actuators, manufacturing tools, servo motors, etc., can solve the problems of inconvenient adjustment, and achieve the effects of small workload, simple operation, and safe pressure regulation
Active Publication Date: 2020-08-18
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] In view of this, the object of the present invention is to provide a steel pipe water quenching device to compress the hydraulic control circuit to solve the disadvantage of inconvenient adjustment in the existing hydraulic control circuit
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[0014] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0015] A steel pipe water quenching device compression hydraulic control circuit, including a pressure reducing valve 3, a reversing valve 5, a hydraulic lock 6, a one-way throttle valve 7 and an overflow valve 8, wherein the A port of the reversing valve 5 is sequentially connected with the hydraulic pressure After the lock 6 and the one-way throttle valve 7 are connected, they are connected to the rodless cavity of the hydraulic cylinder 1, and the port B of the reversing valve 5 is connected with the hydraulic lock 6 and the one-way throttle valve 7 in turn, and then connected to the rod of the hydraulic cylinder 1. Cavity, the A port of the relief valve 8 is connected between one end of the rodless chamber of the hydraulic cylinder and the one-way throttle valve, and the B port of the relief valve 8 is connected with the oil return port ...
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The invention discloses a pressing hydraulic control loop for a steel pipe water quenching device. An opening A of a reversing valve is sequentially connected with a hydraulic lock and a one-way throttling valve and then is connected to a rodless cavity of a hydraulic cylinder. An opening B of the reversing valve is sequentially connected with the hydraulic lock and the one-way throttling valve and then is connected to a rod cavity of the hydraulic cylinder. An opening A of an overflow valve is connected to one end of the rodless cavity of the hydraulic cylinder, and an opening B of the overflow valve is connected with an oil return opening T. A pressure reducing valve and a pressure sensor are sequentially connected to an oil inlet opening P, and an opening P of the reversing valve is connected between the pressure reducing valve and the pressure sensor. One end of a proportional overflow valve is connected to an oil discharging opening L, and the other end of the proportional overflow valve is connected to an opening Y of the pressure reducing valve. The other connecting opening of the overflow valve is also connected to the opening Y of the pressure reducing valve. The loop is simple, decompression and overflow pressure can be adjusted in a follow-up manner, operation is convenient and fast, and pressure adjusting is safe and reliable. Adjustment on the pressure of multiplesets of hydraulic cylinder control loops can be achieved only by automatically adjusting the pressure of one valve through an upper computer or a controller according to set requirements, operation issimple, and the workload is small.
Description
technical field [0001] The invention belongs to the field of hydraulic control, and in particular relates to a hydraulic pressure control circuit for a steel pipe water quenching device. Background technique [0002] In order to improve the mechanical properties of the steel pipe, increase the strength and plasticity of the steel pipe, a water quenching device is required in the steel pipe heat treatment line. During water quenching, it is necessary to set multiple sets of compression hydraulic cylinders to compress the steel pipe. On the one hand, it is to prevent the steel pipe from running out of the roller when the rotating roller rotates at high speed and lose control. On the other hand, it is to reduce the bending of the steel pipe during the quenching process. Deformation, to obtain better straightness after quenching. This not only requires setting the pressure of the oil cylinders according to the pipeline specifications, but also requires the pressure of each oil ...
Claims
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IPC IPC(8): F15B11/16F15B11/028C21D9/08
Inventor 赵双袁威郑焕平刘树良谭峰
Owner CHONGQING UNIV OF POSTS & TELECOMM