CN201928223U

CN201928223U - Direct current governor system of pipe mill

Info

Publication number: CN201928223U
Application number: CN2010206583400U
Authority: CN
Inventors: 曹烈铭
Original assignee: Southwest Aluminum Group Co Ltd
Current assignee: Southwest Aluminum Group Co Ltd
Priority date: 2010-12-13
Filing date: 2010-12-13
Publication date: 2011-08-10
Anticipated expiration: 2020-12-13

Abstract

The embodiment discloses a direct current governor system of a pipe mill, which comprises a digital silicon direct current governor, a programmable logic controller, a photoelectric encoder and a photoelectric switch. The programmable logic controller controls the digital silicon direct current governor according to a preset program, the photoelectric encoder and the photoelectric signals of the photoelectric switch, the photoelectric encoder is used for measuring the running speed of a motor in the pipe mill, and the photoelectric switch is used for measuring the mill speed of the pipe mill. The technical scheme of the governor system adopts concentrated elements, has few control points and short lines, realizes a closed-loop constant-speed control by the detections of the photoelectric encoder, is capable of adjusting the mill speed to an appropriate level momentarily according to the quality and size of rolled pipes and realizing an accurate shutdown, a normal inching and a reverse inching, is easy to operate, reduces operation strength, thereby enhancing production efficiency.

Description

A kind of pipe mill Direct Current Governor System

Technical field

The utility model relates to the pipe mill field, more particularly, relates to a kind of pipe mill Direct Current Governor System.

Background technology

DC motor is divided into two types of separate excitation and self-excitations as the difference of the prime mover in the direct current power dragging system according to its excitation mode.Separately excited DC machine has superior speed adjusting performance, still is widely used in on the higher manufacturing machine of speed governing performance requirement, in manufacturing machines such as large-scale vertical lathe, large-scale pipe mill, pipe mill, drawbench at present.

The variation of the motor speed that separately excited DC machine causes owing to the variation of load in the course of the work is called velocity variations; If load torque remains unchanged, realize the manufacturing machine change in rotational speed by taking artificial measure, be called speed regulation, be called for short speed governing.

The method of separately excited DC machine speed governing generally has several: mechanical means speed governing, electric approach speed governing and the speed governing of mechanical electric fitting method.Mechanical speed governors is realized speed governing by changing the transmission mechanism speed ratio, and electrical speed regulation is then realized speed governing by changing the working point that the electrical control parameter changes the motor operation.The speed governing of mechanical electric fitting method then can come speed governing with better simply electrical control equipment and gear.

In the prior art, what the speed governing of the separately excited DC machine in pipe mill was adopted is the SCR control governing system of resolution element.Because the control point of the Direct Current Governor System of resolution element is many, line length, motor oppositely are abutted against tentaculum and switch, the starting of motor relies on excises high-power resistance step by step and carries out, thus the energy consumption height, unstable properties, the failure rate height, the maintenance cost height can not satisfy the production needs.

The utility model content

In view of this, the utility model embodiment provides a kind of non-insulated track circuit analog meter, to realize improving the purpose of debugging efficiency.

The utility model embodiment is achieved in that

A kind of pipe mill Direct Current Governor System comprises: digital silicon DC speed regulator, programmable logic controller (PLC), photoelectric encoder and optoelectronic switch;

Described programmable logic controller (PLC) is according to the photosignal control figure silicon DC speed regulator of pre-set programs and photoelectric encoder, optoelectronic switch;

Described photoelectric encoder is used for measuring the running speed of described pipe mill motor;

Described optoelectronic switch is used to measure described pipe mill mill speed.

From above-mentioned technical scheme as can be seen, in the utility model embodiment, by the photosignal control figure silicon DC speed regulator of described programmable logic controller (PLC) according to pre-set programs and photoelectric encoder, optoelectronic switch; Thereby can regulate rotating speed of motor in the pipe mill according to the pipe mill mill speed that the running speed and the optoelectronic switch of motor in the pipe mill of photoelectric encoder mensuration are measured.Because in the sets of elements that the technical scheme among the utility model embodiment adopts, the control point is few, circuit is shorter, utilizes the detection of photoelectric encoder to realize the control of closed loop constant speed, can conveniently momentarily adjust suitable mill speed according to the material and the specification of drawn and rolled tube.In addition, can realize among the utility model embodiment that accurate stopping, positive crawl and antipoints are moving, handled easily reduces manipulation strength, thereby can enhance productivity.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of pipe mill Direct Current Governor System described in the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

In order to enhance productivity effectively, the utility model embodiment provides a kind of pipe mill Direct Current Governor System, as shown in the figure, comprising: digital silicon DC speed regulator 1, programmable logic controller (PLC) 2, photoelectric encoder 3 and optoelectronic switch 3; Programmable logic controller (PLC) 2 is according to the photosignal control figure silicon DC speed regulator 1 of pre-set programs and photoelectric encoder 3, optoelectronic switch 4; Photoelectric encoder 3 is used for measuring the running speed of pipe mill motor; Optoelectronic switch 4 is used to measure described pipe mill mill speed.In the present embodiment, by the photosignal control figure silicon DC speed regulator 1 of described programmable logic controller (PLC) 1 according to pre-set programs and photoelectric encoder 3, optoelectronic switch 4;

In the utility model embodiment, programmable logic controller (PLC) 2 is specifically as follows Omron C200HE-CUP42PLC control core; It is speed regulating device that digital silicon DC speed regulator 1 specifically can adopt Siemens's DC speed regulator; By the detection calculations of photoelectric encoder 3 and optoelectronic switch 4, realize tubing closed loop constant speed rolling and head accurate stopping.Mill speed can be according to technological requirement from 0～100 time/minute electrodeless variation;

Among the utility model embodiment, according to the characteristics of pipe mill master motor four-quadrant operation, 116KW/220V master's DC MOTOR CONTROL of the prior art is realized controlled function by the digital silicon DC speed regulator 1 that traditional relay, D.C. contactor control change in the utility model.Digital silicon DC speed regulator 1 can be selected the reversible 6RA7087-6DV62 type speed regulator of Siemens for use; its rated current is 850A; rated voltage is 400V; this type speed regulator has that volume is little, in light weight, applied range, stable performance; characteristics such as debugging is convenient; have protection systems such as perfect overcurrent, overvoltage, under-voltage, overspeed detection simultaneously, and failure rate is low.

Because in the utility model embodiment, the main frame speed governing changes change armature voltage speed governing among the utility model embodiment into by weak-magnetic speed-regulating of the prior art, so mill speed can from 50～90 times/set up five gears separately, every retaining is set at fixed speed, utilize the detection of photoelectric encoder 3 to realize the control of closed loop constant speed, can conveniently momentarily adjust suitable mill speed according to the material and the specification of drawn and rolled tube.It is moving also to increase accurate stopping, positive crawl and antipoints in addition, and handled easily reduces manipulation strength, thus the production efficiency of can further improve.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. a pipe mill Direct Current Governor System is characterized in that, comprising: digital silicon DC speed regulator, programmable logic controller (PLC), photoelectric encoder and optoelectronic switch;