CN-115929711-B - Control system of pressurize frock

CN115929711BCN 115929711 BCN115929711 BCN 115929711BCN-115929711-B

Abstract

The invention discloses a control system of a pressure maintaining tool, which comprises a system oil way, a first clamp oil way and a second clamp oil way, wherein the first clamp oil way and the second clamp oil way are connected in parallel and are connected with the system oil way, the system oil way comprises a hydraulic pump, an electromagnetic reversing valve, a throttle valve and a pressure maintaining valve group, the first clamp oil way comprises a first clamp oil cylinder and two first sequence valves, the second clamp oil way comprises a second clamp oil cylinder and two second sequence valves, the opening pressure of the first sequence valve is smaller than the opening pressure of the second sequence valve, the hydraulic pump is simultaneously connected with the first sequence valve and the second sequence valve through the electromagnetic reversing valve, the throttle valve and the pressure maintaining valve group, when the opening pressure of the first sequence valve is reached, hydraulic oil enters the first clamp oil cylinder to control the first clamp oil cylinder to work, and when the opening pressure of the second sequence valve is reached, the hydraulic oil enters the second clamp oil cylinder to control the second clamp oil cylinder to work to realize sequential automatic control.

Inventors

LI JIANGNAN
CHEN JIANBO
WANG ZHENGQUAN
LUO DAODONG
WEN KE
HE WEILI

Assignees

华朔科技(宁波鄞州)有限公司

Dates

Publication Date: 20260512
Application Date: 20221128

Claims (6)

1. The control system of the pressure maintaining tool is characterized by comprising a system oil circuit, a first clamp oil circuit and a second clamp oil circuit, wherein the first clamp oil circuit and the second clamp oil circuit are arranged in parallel and are connected with the system oil circuit, the system oil circuit comprises a hydraulic pump, the first clamp oil circuit comprises a first clamp oil cylinder and a first sequence valve, the second clamp oil circuit comprises a second clamp oil cylinder and a second sequence valve, the first sequence valve is provided with a first opening pressure, the second sequence valve is provided with a second opening pressure, and the first opening pressure is smaller than the second opening pressure; The hydraulic pump is simultaneously communicated with the first sequence valve and the second sequence valve, when the pressure of the pressure oil provided by the hydraulic pump is larger than the first opening pressure, the pressure oil provided by the hydraulic pump can enter the first clamp oil cylinder through the first sequence valve, and when the pressure of the pressure oil provided by the hydraulic pump is larger than the second opening pressure, the pressure oil provided by the hydraulic pump can enter the second clamp oil cylinder through the second sequence valve; the two first sequence valves are respectively communicated with the rod cavity and the rodless cavity of the first clamp oil cylinder, the two second sequence valves are respectively communicated with the rod cavity and the rodless cavity of the second clamp oil cylinder; the hydraulic pump is communicated with the two first sequence valves and the two second sequence valves at the same time; the system oil way further comprises an electromagnetic reversing valve, a throttle valve, a pressure maintaining valve bank and an oil tank, wherein the electromagnetic reversing valve is provided with a first electromagnet and a second electromagnet; When the first electromagnet is powered on, the hydraulic pump is communicated with the rodless cavity of the first clamp cylinder sequentially through the electromagnetic directional valve, the throttle valve, the pressure maintaining valve bank and one of the first sequence valves, and is communicated with the rodless cavity of the second clamp cylinder sequentially through the electromagnetic directional valve, the throttle valve, the pressure maintaining valve bank and the other of the second sequence valves, and the rod cavities of the first clamp cylinder and the second clamp cylinder are communicated with the oil tank through the pressure maintaining valve bank and the electromagnetic directional valve; When the second electromagnet is electrified, the hydraulic pump sequentially passes through the electromagnetic directional valve, the pressure maintaining valve bank and one of the first sequence valves and the rod cavity of the first clamp oil cylinder, and sequentially passes through the electromagnetic directional valve, the pressure maintaining valve bank and the other of the second sequence valves and the rod cavity of the second clamp oil cylinder, and the rodless cavities of the first clamp oil cylinder and the second clamp oil cylinder are communicated with the oil tank through the pressure maintaining valve bank, the throttle valve and the electromagnetic directional valve.
2. The pressure maintaining tool control system according to claim 1, wherein the first clamp oil way further comprises a first adjustable pressure reducing valve and two first check valves, one of the first sequence valves is communicated with a rodless cavity of the first clamp oil cylinder through the first adjustable pressure reducing valve, one oil port of the first check valve is communicated with the rodless cavity of the first clamp oil cylinder, the other oil port of the first check valve is communicated with the pressure maintaining valve group, one oil port of the other first check valve is communicated with a rod-containing cavity of the second clamp oil cylinder, the other oil port of the first check valve is communicated with the pressure maintaining valve group, and the opening directions of the two first check valves are both toward the pressure maintaining valve group.
3. The control system of a pressure maintaining tool according to claim 1, wherein the second clamp oil way further comprises a second adjustable pressure reducing valve and two second check valves, wherein the two second sequence valves are communicated with a rodless cavity of the second clamp oil cylinder through the second adjustable pressure reducing valve, one oil port of one second check valve is communicated with the rodless cavity of the second clamp oil cylinder, the other oil port of the second check valve is communicated with the pressure maintaining valve group, one oil port of the other second check valve is communicated with a rod cavity of the second clamp oil cylinder, the other oil port of the second check valve is communicated with the pressure maintaining valve group, and the opening directions of the two second check valves are both toward the pressure maintaining valve group.
4. The control system of a pressure maintaining tool according to claim 1, wherein an overflow valve is arranged between the hydraulic pump and the electromagnetic directional valve.
5. The pressure maintaining tool control system according to claim 1, further comprising a third clamp oil path and a fourth clamp oil path, wherein the first clamp oil path, the second clamp oil path, the third clamp oil path and the fourth clamp oil path are connected in parallel, the third clamp oil path comprises a third clamp oil cylinder and a third sequence valve, and the fourth clamp oil path comprises a fourth clamp oil cylinder and a fourth sequence valve; The third sequence valve and the fourth sequence valve are connected with the hydraulic pump, the third sequence valve is provided with a third opening pressure, the fourth sequence valve is provided with a fourth opening pressure, the third opening pressure is larger than the second opening pressure, and the fourth opening pressure is larger than the third opening pressure.
6. The pressure maintaining tool control system according to claim 5, further comprising an accumulator for replenishing the first, second, third and fourth clamp cylinders.

Description

Control system of pressurize frock Technical Field The invention relates to the technical field of clamp control, in particular to a control system of a pressure maintaining tool. Background The pressure maintaining fixture is used in the process that the oil pipe is required to be manually plugged and unplugged, and because the number of the oil pipes of the multi-loop fixture is large, the fixtures also have sequence requirements, the manual plugging efficiency is low, the sequence is easy to make mistakes, and the product deformation even the fixture is easy to damage. Disclosure of Invention Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a control system of a pressure maintaining tool, which can control each clamp to act according to a sequence, and has high control precision and higher efficiency. The utility model provides a control system of a pressure maintaining tool, which comprises a system oil circuit, a first clamp oil circuit and a second clamp oil circuit, wherein the first clamp oil circuit and the second clamp oil circuit are arranged in parallel and are connected with each other, the system oil circuit comprises a hydraulic pump, the first clamp oil circuit comprises a first clamp oil cylinder and a first sequence valve, the second clamp oil circuit comprises a second clamp oil cylinder and a second sequence valve, the first sequence valve is provided with a first opening pressure, the second sequence valve is provided with a second opening pressure, and the first opening pressure is smaller than the second opening pressure; The hydraulic pump is simultaneously communicated with the first sequence valve and the second sequence valve, when the pressure of the pressure oil provided by the hydraulic pump is larger than the first opening pressure, the pressure oil provided by the hydraulic pump can enter the first clamp oil cylinder through the first sequence valve, and when the pressure of the pressure oil provided by the hydraulic pump is larger than the second opening pressure, the pressure oil provided by the hydraulic pump can enter the second clamp oil cylinder through the second sequence valve; the two first sequence valves are respectively communicated with the rod cavity and the rodless cavity of the first clamp oil cylinder, the two second sequence valves are respectively communicated with the rod cavity and the rodless cavity of the second clamp oil cylinder; the hydraulic pump is communicated with the two first sequence valves and the two second sequence valves at the same time; the system oil way further comprises an electromagnetic reversing valve, a throttle valve, a pressure maintaining valve bank and an oil tank, wherein the electromagnetic reversing valve is provided with a first electromagnet and a second electromagnet; When the first electromagnet is powered on, the hydraulic pump is communicated with the rodless cavity of the first clamp cylinder sequentially through the electromagnetic directional valve, the throttle valve, the pressure maintaining valve bank and one of the first sequence valves, and is communicated with the rodless cavity of the second clamp cylinder sequentially through the electromagnetic directional valve, the throttle valve, the pressure maintaining valve bank and the other of the second sequence valves, and the rod cavities of the first clamp cylinder and the second clamp cylinder are communicated with the oil tank through the pressure maintaining valve bank and the electromagnetic directional valve; When the second electromagnet is electrified, the hydraulic pump sequentially passes through the electromagnetic directional valve, the pressure maintaining valve bank and one of the first sequence valves and the rod cavity of the first clamp oil cylinder, and sequentially passes through the electromagnetic directional valve, the pressure maintaining valve bank and the other of the second sequence valves and the rod cavity of the second clamp oil cylinder, and the rodless cavities of the first clamp oil cylinder and the second clamp oil cylinder are communicated with the oil tank through the pressure maintaining valve bank, the throttle valve and the electromagnetic directional valve. According to the control system of the pressure maintaining tool, the first clamp oil way further comprises a first adjustable pressure reducing valve and two first check valves, wherein one first sequence valve is communicated with the rodless cavity of the first clamp oil cylinder through the first adjustable pressure reducing valve, one oil port of the first check valve is communicated with the rodless cavity of the first clamp oil cylinder, the other oil port of the first check valve is communicated with the pressure maintaining valve group, one oil port of the other check valve is communicated with the rod cavity of the second clamp oil cylinder, the other oil port of the first check valve is communicated with