Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of controlling pressure for system of composite procedure in artificial diamond press

An artificial diamond and system pressure technology, applied in the application of ultra-high pressure process, etc., can solve problems such as overpressure instability, affecting service life, crushing hammer, hammer collision, etc., to achieve stable work, prolong service life, and improve safety The effect of the coefficient

Inactive Publication Date: 2005-11-23
NANJING TECH UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that in order to meet the needs of ultra-high pressure synthesis pressure in the middle and late stages of synthesis, the system pressure is controlled at a very high value during the entire synthesis step, and at the beginning of synthesis and when the synthesis pressure is low, the control of ultra-high pressure The overpressure valve with high-pressure synthetic pressure works under a large pressure difference, which seriously affects the service life of the valve and the overpressure is not stable, and it is easy to make the strokes of the six hammers asynchronous, and it is easy to cause hammer crushing and hammer collision accidents

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] The proportional integral regulator (model DTL-3110) is an analog regulator. The control parameter proportionality is 15%, the integral time is 2 seconds, the action direction is reverse, and the measurement input is a voltage signal of 1 to 5V, given the input It is a 4-20mA current signal, and the output is a 4-20mA current signal. The measurement value range of the system pressure transmitter is 0-25Mpa, the boost ratio of the supercharger is 6; the constant is 1MPa; the limiter (model DFF-1000) is set to 60%. From the synthetic process setting curve, the synthetic pressure setting value from the beginning of the synthesis to the end of the synthesis is 14~90Mpa. The synthetic pressure setting value is divided by the boost ratio 6, and the resulting quotient is 2.33~15MPa, plus the constant 1MPa, Obtain 3.33~16MPa, this value is used as the given value of system pressure, and the measured value of system pressure is sent to the proportional integral regulator for compari...

Embodiment 2

[0009] The proportional integral regulator (model DTL-3110) is an analog regulator. The control parameter proportionality is 15%, the integral time is 2 seconds, the action direction is positive, and the measurement input is a voltage signal of 1 to 5V, given The input is a current signal of 4-20mA, and the output is a current signal of 4-20mA. The measurement range of the system pressure transmitter is 0-25Mpa, the boost ratio of the supercharger is 10; the constant is 3MPa; the limiter (model DFF-1000) is set to 80%. From the synthetic process setting curve, the synthetic pressure setting value from the beginning of the synthesis to the end of the synthesis is 14~90Mpa, divided by the boost ratio of 10, the quotient is 1.4-9MPa, and the constant 3MPa is added to obtain 4.4~12MPa, This value is used as the given value of the system pressure, and it is sent to the proportional integral regulator for comparison and proportional integral calculation together with the measured value ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pressure control method for the hydraulic press used to synthesize artificial diamond includes such steps as dividing the synthesizing pressure given by the technological curve by the pressure boosting ratio of pressure booster to obtain a quotient, adding a constant to it to obtain a given system pressure, comparing it with the measured system pressure by a proportional-integral regulator, operating, amplitude limiting to obtain a control signal, amplifying, and controlling the opening of electrohydraulic proportional overflow valve to regulate system pressure.

Description

Technical field [0001] The invention relates to a method for controlling the system pressure of a six-sided artificial diamond press with a supercharger during a synthesis step, and belongs to the technical field of artificial diamond press control. Background technique [0002] At present, the common control method for the system pressure of the synthetic diamond press with supercharger during the synthesis step is the fixed value control method, that is, during the synthesis step, regardless of the working conditions, the system pressure is controlled at a fixed Value. The disadvantage of this method is that in order to meet the needs of ultra-high pressure synthesis pressure in the middle and late stages of synthesis, the system pressure is controlled at a very high value during the entire synthesis step. However, at the beginning of synthesis and when the synthesis pressure is low, the system pressure is controlled at a high value. The overpressure valve of high-pressure synt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
Inventor 孙世荣袁启昌
Owner NANJING TECH UNIV