An automatic control system for a centrifuge

Abstract

The present invention relates to the field of control technology of centrifuges, and specifically to an automatic control system of a centrifuge, which is used to solve the problem in the prior art that the control system of the centrifuge cannot realize real-time monitoring and real-time control. The present invention includes a centrifuge base and a PLC control unit, the upper surface of the centrifuge base supports the centrifuge body through a centrifuge bearing seat, the PLC control unit is connected to a speed sensor, a vibration sensor, a solenoid valve and a temperature sensor through cables, the speed sensor and the vibration sensor are both installed on the centrifuge base, the temperature sensor is installed on the centrifuge bearing seat, and the solenoid valve is installed on the liquid inlet pipeline connected to the centrifuge bearing seat. In the present invention, the above technical solution can realize real-time monitoring and control of the operating status of the centrifuge during operation, and when the centrifuge operates abnormally, the power supply is cut off in time to protect the body, so the safety is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifuge control, and more particularly to an automatic control system for a centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or components in a mixture of liquids and liquids. Centrifuges are mainly used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids with different densities in emulsions. It can also be used to remove liquid from wet solids. Centrifuges require a corresponding control system.

[0003] In the prior art, centrifuge control systems mostly use centrifuge control cabinets. However, the centrifuge control cabinets only have system power on / off and speed regulation functions, and require manual adjustments by on-site personnel when a fault occurs. Real-time monitoring and control of the centrifuge operation process cannot be achieved, resulting in low safety performance.

[0004] In the field of oil fields, centrifuge control cabinets are still widely used. In order to overcome the problem that traditional centrifuge control cabinets cannot achieve real-time monitoring and real-time control, an automatic control system for centrifuge is proposed. Summary of the Invention

[0005] To address the above issues, the present invention provides an automatic control system for a centrifuge, addressing the existing inability of centrifuge control systems to achieve real-time monitoring and control. By integrating a PLC control unit, a speed sensor, a vibration sensor, a solenoid valve, and a temperature sensor, the present invention enables real-time monitoring and control of the centrifuge's operating status during operation. Furthermore, if abnormal operation of the centrifuge is detected, the power supply is promptly cut off to protect the centrifuge, thereby enhancing safety.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] An automatic control system for a centrifuge includes a centrifuge base and a PLC control unit. The upper surface of the centrifuge base supports a centrifuge body via a centrifuge bearing seat. The PLC control unit is connected to a speed sensor, a vibration sensor, a solenoid valve, and a temperature sensor via cables. The speed sensor and the vibration sensor are both mounted on the centrifuge base, the temperature sensor is mounted on the centrifuge bearing seat, and the solenoid valve is mounted on a liquid inlet pipeline connected to the centrifuge bearing seat.

[0008] The speed sensor is used to monitor the rotation speed of the centrifuge body; the vibration sensor is used to monitor the vibration of the entire centrifuge; and the temperature sensor is used to monitor the temperature of the bearing in the centrifuge bearing seat.

[0009] The beneficial effects of the present invention are as follows:

[0010] (1) In the present invention, the combination of a PLC control unit, a speed sensor, a vibration sensor, a solenoid valve, and a temperature sensor can realize real-time monitoring and control of the operating status of the centrifuge during operation, and when the centrifuge operates abnormally, the power supply is cut off in time to protect the centrifuge body, thereby improving safety.

[0011] (2) In the present invention, when the data monitored by the PLC control unit is within the normal range of the preset program limit value, when the temperature of the centrifuge main bearing rises, the amount of lubricating oil added will be increased, and the amount of liquid inlet will be reduced by adjusting the solenoid valve; when the vibration of the centrifuge main bearing is too large, the speed of the centrifuge body will be automatically reduced, and the solenoid valve will be controlled to reduce the amount of liquid inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front structural diagram of the present invention;

[0013] Reference numerals: 1 PLC control unit, 2 speed sensor, 3 vibration sensor, 4 centrifuge body, 5 centrifuge base, 6 solenoid valve, 7 centrifuge bearing seat, 8 temperature sensor, 9 liquid inlet pipeline. DETAILED DESCRIPTION

[0014] In order for those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and the following embodiments.

[0015] Example:

[0016] like Figure 1 As shown, an automatic control system for a centrifuge includes a centrifuge base 5 and a PLC control unit 1. The upper surface of the centrifuge base 5 supports a centrifuge body 4 through a centrifuge bearing seat 7. The PLC control unit 1 is connected to a speed sensor 2, a vibration sensor 3, a solenoid valve 6, and a temperature sensor 8 via cables. The speed sensor 2 and the vibration sensor 3 are both mounted on the centrifuge base 5, the temperature sensor 8 is mounted on the centrifuge bearing seat 7, and the solenoid valve 6 is mounted on a liquid inlet pipeline 9 connected to the centrifuge bearing seat 7. Specifically, the speed sensor 2 and the vibration sensor 3 can be controlled to be mounted on the centrifuge base 5 by a bracket.

[0017] Working principle: When the system is running, the PLC control unit 1 will monitor the current, load rate, torque, etc. of the main motor, and monitor the rotation speed of the centrifuge body 4 through the speed sensor 2; monitor the vibration of the whole machine through the vibration sensor 3, where the whole machine refers to the entire centrifuge; monitor the temperature of the bearing in the centrifuge bearing seat 7 through the temperature sensor 8, and then transmit the monitored data to the PLC control unit 1 through the speed sensor 2, vibration sensor 3 and temperature sensor 8. The dedicated program and preset process flow compiled in the PLC control unit 1 perform multi-level early warning and automatic intervention to achieve closed-loop control, and serve as the main indicator for the PLC control unit 1 program to judge the operating status of the system, so that the PLC control unit 1 can automatically adjust the liquid supply, rotation speed, oil and gas lubrication gap duration, etc. The dedicated program of the PLC control unit 1 is set according to the actual working conditions and cannot be adjusted during use.

[0018] When the system is running, when the data monitored by the PLC control unit 1 is within the normal range of the preset program limit value, when the temperature of the centrifuge main bearing rises, the amount of lubricating oil added will be increased, and the liquid inlet amount will be reduced by adjusting the solenoid valve 6; when the centrifuge main bearing vibrates too much, the speed of the centrifuge body 4 will be automatically reduced, and the solenoid valve 6 will be controlled to reduce the liquid inlet amount.

[0019] When the system is running, when the data monitored by the PLC control unit 1 exceeds the preset program limit value, the PLC control unit 1 will shut down according to the process flow; if important operating data exceeds the limit value, the PLC control unit 1 will force the whole machine to stop, thereby realizing real-time monitoring and control of the operating status of the centrifuge during operation, and with higher safety.

[0020] The above are embodiments of the present invention. The above embodiments and the specific parameters therein are only for the purpose of clearly describing the invention verification process and are not intended to limit the scope of patent protection of the present invention. The scope of patent protection of the present invention shall still be subject to the claims. Any equivalent structural changes made by using the contents of the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. An automatic control system for a centrifuge, characterized in that: The invention comprises a centrifuge base (5) and a PLC control unit (1), wherein the upper surface of the centrifuge base (5) supports a centrifuge body (4) via a centrifuge bearing seat (7), and the PLC control unit (1) is connected to a speed sensor (2), a vibration sensor (3), a solenoid valve (6), and a temperature sensor (8) via cables, wherein the speed sensor (2) and the vibration sensor (3) are both mounted on the centrifuge base (5), the temperature sensor (8) is mounted on the centrifuge bearing seat (7), and the solenoid valve (6) is mounted on an inlet connected to the centrifuge bearing seat (7). On the liquid pipeline (9); the speed sensor (2) is used to monitor the rotation speed of the centrifuge body (4); the vibration sensor (3) is used to monitor the vibration of the entire machine; the temperature sensor (8) is used to monitor the temperature of the bearing in the centrifuge bearing seat (7); when the data monitored by the PLC control unit (1) is within the normal range of the preset program limit value, when the temperature of the centrifuge main bearing rises, the amount of lubricating oil added is increased, and the amount of liquid inlet is reduced by adjusting the electromagnetic valve (6); when the vibration of the centrifuge main bearing is too large, the rotation speed of the centrifuge body is automatically reduced, and the electromagnetic valve (6) is controlled to reduce the amount of liquid inlet.

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