CN201788395U - Steel pipe expanding rate measurement and control device - Google Patents
Steel pipe expanding rate measurement and control device Download PDFInfo
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- CN201788395U CN201788395U CN2010205207477U CN201020520747U CN201788395U CN 201788395 U CN201788395 U CN 201788395U CN 2010205207477 U CN2010205207477 U CN 2010205207477U CN 201020520747 U CN201020520747 U CN 201020520747U CN 201788395 U CN201788395 U CN 201788395U
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Abstract
The utility model relates to the technical field of oil cylinder stroke detection and oil cylinder work pressure detection, and particularly relates to a steel pipe expanding rate measurement and control device. The steel pipe expanding rate measurement and control device comprises an oil cylinder stroke detecting device, an oil cylinder pressure sensor, a pressure control device, a PLC control system, a PC system and an output device, wherein the oil cylinder stroke detecting device, the oil cylinder pressure sensor and the pressure control device are arranged in an expanding hydraulic system of an expansion sleeve expanding machine, the PLC control system is connected with an expanding oil cylinder, and the PC system and the output device are connected with the PLC control system. The steel pipe expanding rate measurement and control device is used for continuous measurement, calculation and analysis of oil cylinder stroke and pressure in steel pipe expanding to obtain the initial pipe diameter, the terminate pipe diameter and the expanding rate of an expanded steel pipe, thereby controlling automatic running of equipment. The steel pipe expanding rate measurement and control device has the advantages that the device is a mechanical, electrical and hydraulic computer complicated comprehensive measurement and control system, the device ensures the quality of the steel pipe to the maximum extent by the aid of the control targets of the terminate pipe diameter and the expanding rate, and non-manual measurement is extremely favorable for improving product quality.
Description
Technical field
The utility model relates to oil cylinder stroke and detects and oil cylinder working pressure detection technique field, being particularly related to a kind of pipe expanding rate measures and control device, when being used for pipe expanding to oil cylinder stroke and pressure continuous coverage, calculating, analysis draw the hole enlargement steel pipe initial caliber, stop caliber and enlarging rate, thereby opertaing device moves automatically.
Background technology
At present, the large-scale petroleum chemical enterprise is more and more stricter to the requirement of pipeline steel tube.For ease of the welding of butt joint steel pipe, require harsh more to pipe end circularity and diameter.Steel pipe's production enterprise is limited to technology and cost factor, and directly the steel pipe of producing generally can't meet the demands.So the pipe end expanding machine has been production line indispensability process equipment, the consistance of steel pipe roundness and diameter thereby assurance is dispatched from the factory.
The steel tube head expanding machine equipment of existing a kind of technology maturation is used wider as the equipment of describing among the granted patent CN2561532Y.Also have a kind of oil cylinder stroke detection control apparatus, can wherein describe a kind of expanding machine operating cylinder stroke and measure the device of control referring to granted patent CN201046487Y.Adopt the steel tube head expanding machine of above-mentioned technology, realize that basic function is without any problem.But following shortcoming is arranged: 1, automaticity is not high, can not realize intelligent hole enlargement function.Be installed in the condition that the length-measuring appliance on the oil cylinder just finishes as hole enlargement, reliability is low, and the operator still through tape measure girth commonly used, calculates caliber, and method primitive labor intensity is big.2, do not measure original caliber, only control final caliber, thereby cause enlarging rate greater than desired value, serious situation causes the steel duct fine fisssure, causes defective.3, can't realize hole enlargement data recording, storage, analysis and utilization, for example initial caliber is better to estimate producing one of steel pipe.The utility model is to the development of above-mentioned technology and expansion.
Summary of the invention
The purpose of this utility model provides a kind of pipe expanding rate and measures and control device, simultaneously the stroke and the pressure of oil cylinder is measured at pipe expanding, thereby is drawn initial diameter and two critical datas of hole enlargement process diameter of steel pipe, and then calculate enlarging rate.
The purpose of this utility model realizes by following technical proposals:
Pipe expanding rate of the present utility model is measured and control device, it is characterized in that comprising oil cylinder stroke pick-up unit, oil cylinder working-pressure sensor and pressure control device in the hole enlargement hydraulic system that is located at the ringfeder expanding machine, it is characterized in that described hole enlargement hydraulic system is connected with the PLC control system, this PLC control system is connected with PC system and output device.
Described device for detecting distance of travel is built-in oil cylinder position chi, external grating chi, stay cord scrambler or tooth bar transmission scrambler.
Pressure control device in the described hole enlargement hydraulic system cooperates proportional servo valve for the ratio unloader cooperates direction valve or constant pressure variable displacement pump.
Described PLC control system is selected Siemens S7-300 for use, and its CPU selects CPU314-2DP for use.
The Industrial Control Computer of the described PC employing operation winccflexible of system software.
Described output device is printer and network data output device.
Control method of the present utility model is characterized in that comprising the steps:
1) oil cylinder is installed and is detected stroke apparatus, establish oil cylinder stroke L (0-600mm), for one group of hole enlargement mould, convert and be calibrated to a hole enlargement diameter D (1000mm-1050mm),
2) the oil cylinder working-pressure sensor is installed, establishing pressure is that P(0-27MPa), pressure is represented hole enlargement head and tube wall exposure level and steel pipe elastic-plastic deformation degree,
3) make the system of hole enlargement oil cylinder fuel feeding produce 2 pressure value P 1 and P2, P1 gets and is slightly less than steel pipe yield pressure value, guarantee that steel pipe only produces micro-elastic deformation, can eliminate gap between the hole enlargement head member like this, P2 gets greater than steel pipe yield pressure value, guarantee that steel pipe produces elastic-plastic deformation, realizes the hole enlargement purpose
4) computer control system is carried out the pressure and the stroke measurment of hole enlargement oil cylinder fast, calculates enlarging rate, calculates the external diameter variable quantity, and basic data is stored and utilized, and comprises the data of various calibers, mould, wall thickness, and the coherent system control function is finished hole enlargement work,
5) periodic modification primary data guarantees that mould is corresponding with data.
The course of work of the present utility model is:
1) by control system to the oil cylinder P1 that exerts pressure, the hole enlargement head is reliably contacted, when oil cylinder stroke detects data record length data L0 when constant, through calculating initial caliber D0 with the steel pipe inwall.
2) to the oil cylinder value of exerting pressure P2, because P2 is greater than the steel pipe yield force, sensor pressure does not reach P2, has begun hole enlargement this moment, for restriction hole enlargement speed should adopt throttle grverning.
3) in above two processes, computer system is measured stroke and pressure data at a high speed at any time, and is transformed into the diameter of steel tube data value, calculates the thickness of steel pipe reduction, revises to stop external diameter, calculates enlarging rate.When stopping stopping the P2 pressure feed when diameter or enlarging rate reach setting, change next step over to.
4) hole enlargement process changes packing stage over to after reaching setting, stablizes a period of time.
5) after the time arrival, apply oil cylinder working-pressure P1 once more, record length data L1 calculates steel pipe again and stops diameter D1 when oil cylinder stroke detection data are constant, calculates the new wall thickness of steel pipe, calculates the pipe expanding rate.
6) according to basic data, revise D0 to steel pipe original outer diameter D0-0, calculate and revise D1 to stopping outer diameter of steel pipes D1-1, calculate enlarging rate thus, output data is finished the hole enlargement process.
Usefulness of the present utility model is:
1) oil cylinder stroke in the expanding machine hydraulic system is connected with computing machine PLC control system, PC system and output device with pressure survey.Form a machinery, hydraulic pressure, electric, the complicated composite measurement control system of computing machine.
2) realize on expanding machine that first caliber measures automatically, solve the technical barrier of steel pipe enterprise.
3) adopt termination caliber and 2 controlled target of enlarging rate, at utmost guarantee tube quality, in two targets, decision-making can be arranged most.
4) adopt this kind scheme, reliability is higher, and is bigger if measurement D1 value departs from, and the serious overproof or equipment failure of sign steel pipe can not obtain qualified steel pipe, and stopping alarm stops to produce useless pipe.
5) the hole enlargement process data that is produced by computing machine, for example the continuous change curve in pressure and position can be assessed the hole enlargement accuracy fully, forms the hole enlargement data recording, is convenient to memory by using.Initial caliber is to weigh the important parameter that main frame is produced steel pipe, and unartificial measurement, and this is very beneficial for product quality and improves.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with the given embodiment of accompanying drawing, further specify embodiment of the present utility model.
As shown in Figure 1, pipe expanding rate of the present utility model is measured and control device, comprise oil cylinder stroke pick-up unit, oil cylinder working-pressure sensor and pressure control device in the hole enlargement hydraulic system 2 that is located at ringfeder expanding machine 1, it is characterized in that described hole enlargement hydraulic system 2 is connected with PLC control system 3, this PLC control system 3 is connected with PC system 4 and output device 5.
Described device for detecting distance of travel is built-in oil cylinder position chi, external grating chi, stay cord scrambler or tooth bar transmission scrambler.
Pressure control device in the described hole enlargement hydraulic system cooperates proportional servo valve for the ratio unloader cooperates direction valve or constant pressure variable displacement pump.
Described PLC control system is selected Siemens S7-300 for use, and its CPU selects CPU314-2DP for use.
The Industrial Control Computer of the described PC employing operation winccflexible of system software.
Described output device is printer and network data output device.
Described device for detecting distance of travel is stay cord scrambler or tooth bar transmission scrambler.Pressure control device in the described hole enlargement hydraulic system cooperates the direction valve system for the ratio unloader, master cylinder setting pressure sensor, the hole enlargement power of detection hole enlargement head.Scrambler and analog sensor directly enter PLC, and PLC finishes control and computing, adopt the prescription function to realize the mold data switching.
Usefulness of the present utility model is: the expanding machine system adopts mechanical device, hydraulic system, oil cylinder stroke and pressure measxurement, computer measurement and control, is a machinery, electric, hydraulic pressure, the complicated composite measurement control system of computer; Realize Calibration at expanding machine first, solve the technical barrier of Steel Pipe Enterprise; Adopt to stop caliber and 2 control of enlarging rate target, at utmost guarantee tube quality, in two targets, decision-making can be arranged most; Adopt this kind scheme, reliability is higher, and is bigger if measurement D1 value departs from, and the serious overproof or equipment fault of sign steel pipe can not obtain qualified steel pipe, and stopping alarm stops to produce useless pipe; By the hole enlargement process data that computer produces, for example the continuous change curve in pressure and position can be assessed the hole enlargement accuracy fully, forms the hole enlargement data record, is convenient to memory by using. Initial caliber is to weigh the important parameter that main frame is produced steel pipe, and unartificial measurement, and this is very beneficial for product quality and improves.
Claims (6)
1. a pipe expanding rate is measured and control device, comprise oil cylinder stroke pick-up unit, oil cylinder working-pressure sensor and pressure control device in the hole enlargement hydraulic system that is located at the ringfeder expanding machine, it is characterized in that described hole enlargement hydraulic system is connected with the PLC control system, this PLC control system is connected with PC system and output device.
2. pipe expanding rate according to claim 1 is measured and control device, it is characterized in that described device for detecting distance of travel is built-in oil cylinder position chi, external grating chi, stay cord scrambler or tooth bar transmission scrambler.
3. pipe expanding rate according to claim 1 is measured and control device, it is characterized in that the pressure control device in the described hole enlargement hydraulic system cooperates proportional servo valve for the ratio unloader cooperates direction valve or constant pressure variable displacement pump.
4. pipe expanding rate according to claim 1 is measured and control device, it is characterized in that described PLC control system selects Siemens S7-300 for use, and its CPU selects CPU314-2DP for use.
5. pipe expanding rate according to claim 1 is measured and control device, it is characterized in that the Industrial Control Computer of the described PC employing operation winccflexible of system software.
6. pipe expanding rate according to claim 1 is measured and control device, it is characterized in that described output device is printer and network data output device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205207477U CN201788395U (en) | 2010-09-08 | 2010-09-08 | Steel pipe expanding rate measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205207477U CN201788395U (en) | 2010-09-08 | 2010-09-08 | Steel pipe expanding rate measurement and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788395U true CN201788395U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205207477U Expired - Fee Related CN201788395U (en) | 2010-09-08 | 2010-09-08 | Steel pipe expanding rate measurement and control device |
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| CN (1) | CN201788395U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945954A (en) * | 2011-11-11 | 2014-07-23 | 爱迪生麦基公司 | Servo motor controlled hydraulic pump unit for tube end forming equipment |
| CN106391891A (en) * | 2016-08-31 | 2017-02-15 | 保隆(安徽)汽车配件有限公司 | Tubing flaring system based on hydraulic machine and tubing flaring method |
| CN107803346A (en) * | 2017-09-23 | 2018-03-16 | 南京律智诚专利技术开发有限公司 | A kind of workpiece automatic sorting device with PLC technology |
-
2010
- 2010-09-08 CN CN2010205207477U patent/CN201788395U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945954A (en) * | 2011-11-11 | 2014-07-23 | 爱迪生麦基公司 | Servo motor controlled hydraulic pump unit for tube end forming equipment |
| CN103945954B (en) * | 2011-11-11 | 2017-03-29 | 爱迪生麦基公司 | For the hydraulic pump unit of the Serve Motor Control of tube end former |
| CN106391891A (en) * | 2016-08-31 | 2017-02-15 | 保隆(安徽)汽车配件有限公司 | Tubing flaring system based on hydraulic machine and tubing flaring method |
| CN106391891B (en) * | 2016-08-31 | 2018-04-03 | 保隆(安徽)汽车配件有限公司 | A kind of tubing bellmouth system and tubing flared method based on hydraulic press |
| CN107803346A (en) * | 2017-09-23 | 2018-03-16 | 南京律智诚专利技术开发有限公司 | A kind of workpiece automatic sorting device with PLC technology |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20150908 |
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| EXPY | Termination of patent right or utility model |