CN201237585Y

CN201237585Y - Supersonic inspection line steel pipe end-to-end non-bump connection follow-up control apparatus

Info

Publication number: CN201237585Y
Application number: CNU2008200298720U
Authority: CN
Inventors: 徐驰; 樊萍
Original assignee: CHINA HEAVY MACHINERY INSTITUTE
Current assignee: China National Heavy Machinery Research Institute Co Ltd
Priority date: 2008-08-06
Filing date: 2008-08-06
Publication date: 2009-05-13
Anticipated expiration: 2018-08-06

Abstract

The utility model discloses an ultrasonic flaw detection thread steel tube connecting follow-up control device without impact from head to end, which consists of a control unit and a driving unit for controlling the movement of fore and aft tubes, and a transmission unit for driving the fore and aft tubes to move in tandem, and is characterized in that a front, a middle, and a hinder position detection units SQ1 photoelectric switch (4), SQ2 approach switch (6) and SQ3 approach switch (9) are respectively arranged along the fore and aft tubes moving orbit circuit; the transmission unit consists of a defectoscope niproll (1), a follow roller (3), a first chasing roller (5), a second chasing roller (8) and a receiving roller (10); the defectoscope niproll (1), the follow roller (3), the first chasing roller (5), the second chasing roller (8) and the receiving roller (10) are arranged along the fore and aft tubes moving orbit circuit. The ultrasonic flaw detection thread steel tube connecting follow-up control device without impact from head to end has the advantages of simple structure, perfect performance, high reliability of control system, and capacity of meeting demands of different pipe diameters and different pipe lengths.

Description

Supersonic flaw detecting line steel tube does not have the bump connection end to end and follows control device

Technical field

The utility model belongs to the utility appliance of solid drawn tube supersonic flaw detecting line, is that supersonic flaw detecting line steel tube does not have bump end to end and connects and to follow control device exactly.

Background technology

Along with the continuous increase to energy demand, existing market heightens to the demand of flow string, and China also exports to external except that satisfying domestic market demand in a large number.Because the quality requirements of flow string is very high, ultrasonic flaw-detecting machine and utility appliance thereof have just become must obligato equipment on the production line.Therefore the decay of ultrasound wave in water is very little, is visited the object appearance always in water, does not intake in managing, and need block up pipe two during single pipe flaw detection; If pipe is detected a flaw continuously in batch, just require every pipe when flaw detection, to be end-to-end.And existing supersonic flaw detecting line is to satisfy this requirement, needs to increase utility appliance.

Summary of the invention

The purpose of this utility model provides that a nested structure is simple, perfect in shape and function, control system reliability height, can satisfy supersonic flaw detecting line steel tube that different tube diameters, different tube length require and do not have bump end to end and connect and follow control device.

The purpose of this utility model is achieved in that supersonic flaw detecting line steel tube does not have the bump connection end to end and follows control device, comprise control module and driver element that control front and back pipe moves, pipe one in front and one in back moved before and after gear unit drove, and it is characterized in that: three position detection unit SQ1 optoelectronic switches before, during and after being furnished with respectively on the track circuit that moves along the front and back pipe, SQ2 near switch and SQ3 near switch; Gear unit comprises the defectoscope niproll, follows roller, first pursue and attack roller, second and pursue and attack roller, be subjected to material roller, the defectoscope niproll, follows roller, first and pursues and attacks on the track circuit that roller, second pursues and attacks roller and moved along the front and back pipe by material roller and arrange.

Described first pursues and attacks and is fixed with second check point before the roller roller-way, is set with the 3rd check point second before pursuing and attacking the roller roller-way.

Described detecting unit SQ1 optoelectronic switch adopts correlation optoelectronic switch SQ1A, SQ1B to detect pipe end to end.

Described SQ2 adopts near switch near switch near switch, SQ3.

Characteristics of the present utility model are:

1, changing constantly, measures the distance problem of difficulty, convert matter of time to, and provide theoretical direction.

2, because original theoretical analysis makes that the hardware collocation of The whole control system is simple, only need detector switch, frequency converter, Programmable Logic Controller commonly used, can realize controlling requirement.

3, use conventional PLC to programme, fully develop computing function, timer function, the network communication function of PLC; In the application of numerical value conversion and detector switch signal, innovation is arranged all.

4, adjust the main frame speed of production and change production specification after, do not need to adjust device parameter, system guarantees and has realized that with motion tracking this is the maximum in actual use highlight of the utility model from software design.

5, owing to adopted PLC calculating and control, the accuracy of system, security and reliability height.

6, owing to do not select specific components for use, make that total system operating cost is low, easy to use, it is simple to safeguard.

It can effectively guarantee to be realized pipe ultrasonic continuous flaw detection in batch by inserting tube headtotail when the UT (Ultrasonic Testing).

Description of drawings

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

Fig. 1 represents to detect root pipe afterbody timer and picks up counting, and roller-way begins to pursue and attack synoptic diagram simultaneously;

Fig. 2 represents to detect down root pipe head timer and stops the timing synoptic diagram;

Fig. 3 is control module and gear unit control block diagram.

Among the figure: 1, defectoscope niproll; 2, preceding pipe; 3, follow roller; 4, SQ1 optoelectronic switch; 5, first pursue and attack roller; 6, SQ2 is near switch; 7, back root pipe; 8, second pursue and attack roller; 9, SQ3 is near switch; 10, be subjected to material roller; 11, HMI human and machine interface unit; 12, the CPU control module of PLC; 13, operator's console and analog quantity, switching value input block; 14, with the roller-way control drive unit; 15, first pursue and attack the roller-way control drive unit; 16, second pursue and attack the roller-way control drive unit; 17, charging roller control drive unit; 18, UT (Ultrasonic Testing) motor speed input analog amount module; 19, switching input module; 20, follow electric machines for roller; 21, first pursue and attack electric machines for roller; 22, second pursue and attack electric machines for roller; 23, receiving table motor.

Embodiment

For the utility model there being one understand clearly, the utility model can provide theoretical direction by similar Critical Region of Pursue Problem analysis to two objects, be that the object in front is forward with linear running at the uniform velocity, a next object is in certain distance, with speed how soon, how long can catch up with the object in front.The speed of supposing the object in front is V1, and the speed of the object in back is V2 (V2〉V1), through the distance of Sc, need time tx to catch up with, can set up formula:

Sc＝(V2-V1)tx ①

For convenience, we get V2=kV1

Then: tx=[1/ (k-1)] * (Sc/V1) 2.

If: t1=Sc/V1 t1 is two objects in time that reference point is drawn back.

Then: tx=[1/ (k-1)] * t1 3.

In the formula: tx is the time of pursuing and attacking; Promptly second object pulls up to the required time of first object.

T1 is two objects in the time that reference point is drawn back; Also be that first object afterbody is by reference point, to second object head to reference point time institute elapsed time.

K is the multiple of two object speeds; Be k=V2/V1, wherein V1 is the speed of first object, and V2 is the speed of second object.

If we are set as a definite value to k, just can directly try to achieve the time tx that catch up with thus by two objects at the time t1 that reference point is drawn back.

By top theoretical direction, we just seeming the tracking problem that changes constantly, measures difficulty, convert the problem of a time to.

Fig. 1 and Fig. 2 finish the structural representation that the front and back pipe does not accurately have bump end to end and connects in conjunction with the control module of above-mentioned theory design and gear unit control.Fig. 1 and Fig. 2 represent is that the root pipe 2 afterbodys steel pipe of pursuing and attacking that picks up counting is pursued and attacked synoptic diagram before detecting, on sequential, root pipe 2 afterbody timers picked up counting before Fig. 1 represented to detect, and roller-way begins to pursue and attack simultaneously, and Fig. 2 represents to detect back root pipe 7 head timers and stops timing.

Before the butt joint zone, establish a check point, shown in SQ1 optoelectronic switch 4 among Fig. 1 (SQ1A, SQ1B), adopt the correlation optoelectronic switch to detect pipe end to end.

Establish second check point first before pursuing and attacking roller 5, establish the 3rd check point before pursuing and attacking roller 8 second, when realizing longer roller-way reduce the distance end to end slightly pursue and attack.As SQ2 among Fig. 1 near switch 6, SQ3 near shown in the switch 9, adopt near switch and detect pipe end to end.

The utility model supersonic flaw detecting line steel tube does not have bump end to end and connects and to follow the control device detailed process and can illustrate by following implementation step:

1, during device start, comprises defectoscope niproll 1, follows roller 3, first pursues and attacks roller 5, second and pursue and attack roller 8, be subjected to material roller 10, all move with ultrasound wave main frame speed;

Also do not arrive SQ3 near switch 9 if the afterbody of 2 root pipes has passed through SQ2 near the head of switch 6 and back root pipe 7, then second pursue and attack roller 8, moved with the speed of pursuing and attacking by material roller 10, to reduce the distance of pipe between end to end;

If the afterbody of 3 preceding pipes has passed through SQ2 and has passed through SQ3 near switch 9 near the head of switch 6 and back root pipe 7, then defectoscope niproll 1, follow roller 3, first pursue and attack roller 5, second pursue and attack roller 8, be subjected to material roller 10 drive before and after pipes move with ultrasound wave main frame speed V1;

If the afterbody of 4 preceding pipes has passed through SQ1 optoelectronic switch 4, timer picks up counting immediately, and the while first pursues and attacks roller 5, second and pursues and attacks roller 8, is subjected to material roller 3, all to pursue and attack the speed operation; When back root pipe 7 heads passed through SQ1 optoelectronic switch 4, timing stopped, and this moment, clocking value was t1; By formula tx=[1/ (k-1)] * t1, PLC calculates and pursues and attacks time tx, and control back root pipe 7 moves after the tx with the speed of pursuing and attacking, and becomes and follows the operation of main frame speed, finishes two tubes to this and does not accurately have bump end to end and connect accompany movement;

5, later pipe successively repeats this process.

In the utility model the relative distance of two tubes be change at any time, uncertain, and after changing production specification, can cause the variation of each parameter of equipment, if detect its relative distance, checkout equipment is huge, expensive, and implements difficult.Distance detection is become measurement and the control of time with control transformation, make that the hardware design of total system is simple, only need detector switch seldom, utilize calculating and the timer function of PLC simultaneously dexterously, realized the nothing bump accurate tracking of defectoscope requirement.

As shown in Figure 3: the CPU control module 12 of PLC is control centers of this process, finish the collection analysis of all signals, the calculating of process, the CPU control module 12 that steering order is given PLC by HMI human and machine interface unit 11, pipe is finished before and after the control gear unit does not have the bump accurate tracking.

Operator's console and analog quantity, switching value input block 13 are carried out the instruction of the CPU control module 12 of PLC.By UT (Ultrasonic Testing) motor speed input analog amount module 18, adopt and become owner of the motor speed signal; By switching input module 19 gather SQ1 optoelectronic switches 4, SQ2 near switch 6, SQ3 near switching value signals such as switches 9.Pursue and attack roller-way control drive unit 15, second and pursue and attack 17 controls of roller-way control drive unit 16, charging roller control drive unit and follow electric machines for roller 20, first and pursue and attack electric machines for roller 21, second and pursue and attack electric machines for roller 22, receiving table motor 23 and finish defectoscope niproll 1, follow roller 3, first pursue and attack the travelling speed that roller 5, second is pursued and attacked roller 8, is subjected to material roller 10 by the roller-way control drive unit 14, first of following in the driver element.

By theoretical analysis, we draw: for root pipe 2 and accompany movements before pipe is pulled up in rectilinear motion, must design one and follow roller-way, one and pursue and attack roller-way.We have designed two and have pursued and attacked roller-way in actual applications, also have a receiving table, and the quantity of roller-way increases and decreases according to technological requirement; Every section roller-way requires the energy speed change, so adopt frequency converter to control electric machines for roller, guarantees to enter the pipe accompany movement of following the district, follows the outer pipe in district and pursues and attacks motion.

Claims

1, supersonic flaw detecting line steel tube does not have bump end to end and connects and to follow control device, comprise control module and driver element that control front and back pipe moves, pipe one in front and one in back moved before and after gear unit drove, and it is characterized in that: three position detection unit SQ1 optoelectronic switches (4) before, during and after being furnished with respectively on the track circuit that moves along the front and back pipe, SQ2 near switch (6) and SQ3 near switch (9); Gear unit comprises defectoscope niproll (1), follow roller (3), first pursues and attacks roller (5), second and pursues and attacks roller (8), is subjected to material roller (10), defectoscope niproll (1), follows roller (3), first and pursues and attacks on the track circuit that roller (5), second pursues and attacks roller (8) and moved along the front and back pipe by material roller (10) and arrange.

2, supersonic flaw detecting line steel tube according to claim 1 does not have bump end to end and connects and to follow control device, it is characterized in that: described first pursues and attacks roller (5) roller-way is fixed with second check point before, pursues and attacks roller (8) roller-way second and is set with the 3rd check point before.

3, supersonic flaw detecting line steel tube according to claim 1 does not have bump end to end and connects and to follow control device, and it is characterized in that: described detecting unit SQ1 optoelectronic switch (4) adopts correlation optoelectronic switch SQ1A, SQ1B to detect pipe end to end.

4, supersonic flaw detecting line steel tube according to claim 1 does not have bump end to end and connects and to follow control device, and it is characterized in that: described SQ2 adopts near switch near switch (9) near switch (6), SQ3.