JPH01252331A - Refining processing equipment for u-bent pipe - Google Patents

Abstract

PURPOSE:To improve working efficiency and to improve quality, by a method wherein a series of a thermal treatment work, a pressure resistant test work, a shape repairing work, a pipe end cutting work, a pipe end chamfering work, an inspection and cleaning work for a U-bent pipe is carried out on an on-line system. CONSTITUTION:U-bent pipes 1 are hoisted one at a time from a truck type rack device 12 with a lifter by means of a traveling crane 19 and is conveyed to a bent part thermal treatment device (formed with a body 21 and a moving type skid 22). After thermal treatment is applied directly on a bent part by an energizing system, the U-bent pipe is conveyed to a pressure resistant test device. After a pressure resistant test of the U-bent pipe is effected, the U-bent pipe is conveyed to a pipe end cutting and shape correcting surface plate device where correction of the shape of the U-bent pipe is effected, and the end of the U-bent pipe is cut. After completion of the cutting, the U-bent pipe is conveyed to a pipe end chamfering device where chamfering is applied on both end surfaces of the U-bent pipe. After the chamfering, the U-bent pipe is conveyed to an inspection and cleaning device where inspection and cleaning takes place, and the U-bent pipe is conveyed to a next process.

Description

Detailed Description of the Invention (Industrial Application Field 1) This invention relates to processing equipment for U-bent pipes used in chemical, nuclear heat exchangers, etc. This relates to processing equipment that performs a series of operations online, including testing, shape correction, tube end cutting, tube end chamfering, and inspection/cleaning.

[Prior art] U-bend pipes are made by bending seamless steel pipes or welded steel pipes, heat-treating the curved portion, and then subjecting them to pressure tests using air and water pressure, straightening the pipe, cutting the pipe ends, chamfering, and inspecting them.・It is common for products to be packed and shipped after cleaning.

Each of these operations is carried out by independent processing equipment, and as shown in Figure 8, the heat treatment of the curved portion is performed by manipulating the U-bend pipe (1) between the heat treatment equipment body (2) and the skid (3).
), and is clamped with an energized chuck (4) and subjected to heat treatment.

In addition, the pressure test was conducted on a U-bend pipe (1
) is manually placed on a skid (5), and a pressure test is performed by inserting the tube end into a pair of pneumatic and hydraulic heads (6) whose center-to-center distance is adjustable.

To correct the shape of a U-bend pipe, manually carry the U-bend pipe onto a surface plate, mark the cutting position at a predetermined position on the pipe end of the parallel pipe section, and cut the pipe end using a skid. This is done manually by placing a U-bend pipe on top and using a portapull type high-speed cutting machine.

The chamfer on the pipe end is suitable for placing the vent pipe on a skid or
This is done by hand by pulling out books one by one and using a portapull-type bevelling machine.

Furthermore, the U-bend pipe is cleaned and inspected by manually placing the vent pipe on a skid, and after the cleaning and inspection are completed, the vent pipe is again manually transported to the next process.

[Problem to be Solved by the Invention 1] As mentioned above, most of the conventional refining work for U-bend pipes is done manually, which requires a lot of effort and time, has low work efficiency, and causes distortion in the product. It has the disadvantage of being prone to scratches and scratches.

This invention was made in order to solve the many drawbacks of the conventional technology, and it aims to improve work efficiency and quality by bringing the U-bend pipe refining process online. This is an attempt to propose processing equipment.

[Means for solving the problem 1 Heat treatment, pressure test, shape modification, and
The equipment for pipe end cutting, pipe end chamfering, inspection and cleaning is automated as much as possible, as well as the loading and unloading of materials to and from each equipment. This equipment is designed to transport in a direction perpendicular to the axial direction, and is a cart-type rack device with a lifter that stores multiple U-bend pipes in a stacked manner from the upstream side. A curved section heat treatment device having a heat treatment device body movable in the axial direction of the parallel tube portion of a bent pipe and a movable skid, a pressure test device having an elevating clamp device and a pressure test head that can move back and forth, and a dehydration drying device. , a tube end cutting/shape modification surface plate device having a surface plate equipped with an elevating belt conveyor, a clamp device, and a tube end cutting device, a clamp device, a tube end clamping mechanism, a cutting tool forward/backward movement mechanism, and a left/right movement mechanism. A pipe end chamfering device having a chamfering machine main body, and an inspection/cleaning device having an elevating skid are sequentially installed from the upstream side, and the pipe conveying means is provided between the cart-type rack device with a lifter and the pressure test device. The U-bend pipe refining equipment is characterized in that the traversing hoist is of a type that uses a belt conveyor as the pipe conveying means after the pressure test device.

[Function] FIG. 1 is a block diagram showing the U-bend pipe refining equipment and the flow of the pipe according to the present invention.

The U-bend pipes are hoisted one by one from a dolly-type rack device with a lid using a horizontal hoist and transported to the curved section heat treatment equipment, placed on the mobile heat treatment equipment main body and a mobile skid, and bent using the direct energization method. part is heat treated.

After the heat treatment, the U-bent pipe is lifted again by the traverse hoist and transported to the pressure test equipment.

In the pressure test device, the U-bend pipe is moved to a predetermined position using a belt conveyor, and after being fixed using an elevating clamp device, the pressure test head is moved forward for testing. The pressure test is conducted using a pneumatic tester and a water pressure tester.

When the pressure test is finished, the test head is moved back, the club device is lowered, and the U-bend pipe is placed on the belt conveyor.
Transport to dehydration and drying equipment.

When the dehydration and drying of the U-bend pipe is completed, it is carried by a belt conveyor to a tube end cutting/shape modification surface plate device, and then transferred onto an elevating belt conveyor installed on the surface plate and conveyed to the surface plate. . Thereafter, the elevating belt conveyor is lowered to place the U-bend pipe on a surface plate, and the shape is corrected.

When the shape modification is completed, the U-bend pipe is then clamped and fixed at a predetermined position, and then the pipe end is cut by a pipe end cutting device.

After cutting is completed, the elevating belt conveyor is raised again, and the bent pipe placed on the surface plate is placed on the belt conveyor and conveyed to the pipe end chamfering device.

The U-bent pipe sent by the belt conveyor stops at the chamfered position, and is fixed with a clamp device.

After that, the main body of the chamfering machine, which is movable back and forth and left and right, moves to chamfer one side at a time.

After chamfering, the U-bend pipe is transported on a belt conveyor,
Transported to inspection and cleaning equipment.

The U-bend pipes carried in on the belt conveyor are raised to a predetermined height on an elevating skid for inspection and cleaning.

When inspection and cleaning are completed, the elevating skid is lowered and the U-bend pipe is placed on the belt conveyor and sent to the next process.

[Embodiment] Figs. 2 to 7 show examples of the basic configuration of each device according to the present invention, and Fig. 2 is a schematic perspective view showing a trolley type rack device with a lid of the present invention, and Fig. 3 is a schematic perspective view showing a trolley type rack device with a lid of the present invention. The figure is a schematic perspective view showing the curved part heat treatment equipment as above, Fig. 4 is a schematic perspective view showing the pressure test equipment as above, Fig. 5 is a schematic perspective view showing the pipe end cutting/shape correction surface plate device as above, and Fig. 6 is a schematic perspective view showing the same as above. 7 is a schematic perspective view showing the same tube end chamfering device as above, and FIG. 7 is a schematic perspective view showing the same inspection/cleaning device as above.

The trolley type rack device with lifter is shown in Figure 2.
A movable rack (12) that can be moved left and right by a motor according to the pitch interval of the U-bend pipe (1) is mounted on a plurality of carts (10) on a rail (11), and a movable rack (12) that can be moved up and down by a motor in proximity to the rack. The U-bend pipes (1) are stacked and stored in a rack (12), and can be taken out one by one from the top by raising the lifter (14). It has a structure.

The curved portion heat treatment equipment for U-bend pipes is shown in Figure 3.
Rail (2) installed in the axial direction of the parallel pipe part of the U-bend pipe
0) Above is a motor-driven mobile heat treatment equipment body (2
1) is placed, and a plurality of movable skids (22) are placed roughly on the same rail (20). (23) is a current-carrying chuck.

In other words, this curved portion heat treatment equipment is a transverse hoist (19)
The position of the heat treatment equipment main body (21) and the movable skid (22
) The position of the material receiver is variable.

U vent pipe (1) transported by a traverse crane (19)
) is the heat treatment equipment main body (21) and the movable skid (22)
The curved portion is placed on top and the curved portion is heat-treated with an energized chuck (23).

As shown in Fig. 4, the pressure test equipment consists of belt conveyors (35) arranged in parallel at desired intervals, an elevating clamp device (36) installed close to the conveyor, and a pressure test head (36) that can move back and forth. 37), the lifting clamp device (36) has an opening/closing clamp claw (38) and is supported by a vertical cylinder (39), and the pressure test head (37) is attached to a base plate (31). It is provided so that it can be moved back and forth by a horizontal cylinder (32) provided above.Of course, the interval between the test head (37) and the dust vent pipe (1) can be changed depending on the pitch of the dust vent pipe (1).

At the entrance of this pressure test equipment, there is a belt conveyor (
A carrying belt conveyor (33) is connected in the same direction as 35).

The vent pipe (1) transported from the heat treatment equipment is first placed on the delivery belt conveyor (33), and then transferred by the belt conveyor to the belt conveyor (35) of the pressure test equipment and placed at a predetermined position. After stopping and clamping with an elevating clamp device (36), a pressure test head (37) is advanced with a horizontal cylinder (32) to conduct a pressure test.

When the pressure test is completed, the pressure test head (37) is moved back and away from the U-bend pipe (1), and the clamp claw (38) of the elevating clamp device (36) is released, and the top surface of the belt conveyor (35) is opened. lower it to a lower position.
The bend pipe (1) is placed on a belt conveyor (35) and transported to the next dehydration/drying device.

In the dehydration drying equipment, an air injection device (not shown) is used to
Pass air into the vent pipe to remove water from the pipe and dry it.

As shown in Fig. 5, the pipe end cutting/shape correction surface plate device has grooves (41) provided in a surface plate (40) parallel to each other in the pipe conveying direction.
An elevating belt conveyor (42) is installed at the top, and this elevating belt conveyor (42) is supported by a vertical cylinder (43) and is capable of appearing and retracting from the upper surface of the surface plate (40).

A clamp device (44) for pipe cutting is installed at the side end of the surface plate (40).
) is installed, and the clamp claw (45) of this clamp device (44) can be opened and closed by a rack and pinion mechanism or the like.

A tube end cutting device (46) installed close to this clamping device (44) is equipped with a mobile cart (47) driven by a hydraulic cylinder or the like so that both tube ends can be cut at the same time.
) is equipped with two pipe end cutting machine bodies (48).

The vent pipe (1) sent from the pressure test equipment by the belt conveyor is transferred to the elevating belt conveyor (42) that protrudes above the level of the surface plate (40), and is placed at an appropriate position. After stopping the elevating belt conveyor (42), the elevating belt conveyor (42) is lowered by the vertical cylinder (43) to be buried below the top surface of the surface plate (40), and the U-bend pipe is Place it on the surface plate (40). The shape correction work of the U-bend pipe (1) is performed on this surface plate (40).

After the shape correction work is completed, with the material fixed by the clamp claw (45) of the clamp device (44), the two tube end cutting machine bodies (48) are brought close to the tube to cut the tube ends at the same time. .

Once the pipe shape modification and pipe end cutting are completed in this way,
Raise the elevating belt conveyor (42) again and place it on the surface plate (
40) The ascending vent pipe (1) is carried out by the elevating belt conveyor (42) and transferred to a conveyor that connects the chamfering devices in the next process.

As shown in Fig. 6, the pipe end chamfering device includes a parallel belt conveyor (50), a clamping device (51) provided close to the belt conveyor (50), and a chamfering machine body (52).
), and the clamping device (51) is configured to position and fix the tube on the belt conveyor (50).
A conveyor belt (
50), and is provided with a pair of opening/closing clamp claws (54).

In addition, the chamfering machine body (52) has a built-in rotating mechanism for a cutting tool (59) and a tube end clamping mechanism, and a belt conveyor (56) installed on the machine stand (55).
It is installed on a movable base (57) that is movable in parallel with the robot (50), and is movable back and forth using a horizontal cylinder (58). That is, the chamfering machine main body (52) is movable back and forth and left and right.

The mechanism for moving the chamfering machine main body (52) back and forth and left and right is not limited to what is shown here.

Transfer conveyor (49
) is transferred onto the belt conveyor (50) of the chamfering device, stopped at the chamfering position, and fixed and aligned with the clamping device (51). .

Thereafter, the chamfering machine body (52) is moved forward to first chamfer one side, and then the chamfering machine body (52) is moved along the belt conveyor (50) to chamfer the other side.

When chamfering is completed, the U-bend pipe (1) is carried out by a belt conveyor (50) and transferred to a transport conveyor that connects inspection and cleaning equipment for the next process.

As shown in Fig. 7, the inspection/cleaning device includes a belt conveyor (62) placed on a work deck (61) at a desired interval, and an elevating skid (63) placed in parallel along the belt conveyor (62). ), each elevating skid (63) has an opening/closing type V block (64) driven by a cylinder (67) on the top surface, and a vertical cylinder (65).
) is supported so that it can be raised and lowered.

The U-bent pipe (1) transported from the pipe end chamfering device by the transport conveyor (66) is transferred onto the belt conveyor (62) of the inspection/cleaning device, and at the same time is inspected/cleaned.
The pipe is transported to the cleaning position and stopped, and then the elevating skid (63) is raised to receive the pipe at the (2) block (64) and raised to a height where it is easy for the operator to inspect and clean.

When the inspection and cleaning work is completed, the elevating skid (63) is lowered and the U-bend pipe (1) is again placed on the belt conveyor (62) and sent to the next process (packing).

It should be noted that the belt conveyors in the above-mentioned finishing processing equipment are arranged in multiple rows, and it goes without saying that the operation of each equipment is controlled by remote control from a control panel (not shown). do not have.

[Effect of the invention 1 As explained above, according to the present invention, a series of processes from heat treatment to inspection and cleaning of the curved portion of the U-bend pipe are brought online, which not only greatly reduces handling man-hours, but also improves efficiency. U-bend pipes can be processed efficiently. In addition, by reducing the number of handling steps, it is possible to reduce the occurrence of product distortion and flaws, and the quality is also stabilized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the U-bend pipe refining equipment and the flow of the pipe according to the present invention. FIG. 2 is a schematic perspective view showing an example of the trolley-type rack device with a lift lid. FIG. 3 is a schematic perspective view showing an example of the heat treatment apparatus of the present invention. FIG. 4 is a schematic perspective view showing an example of the pressure resistance test apparatus as above. FIG. 5 is a schematic perspective view showing an example of the upward correction/tube cutting device. FIG. 6 is a schematic perspective view showing an example of the upper chamfering device. FIG. 7 is a schematic perspective view showing an example of the inspection/cleaning device same as above. FIG. 8 is a schematic perspective view showing an example of a conventional heat treatment apparatus. FIG. 9 is a schematic perspective view showing an example of the same conventional pressure test apparatus. 1...U-bend pipe 12...Movable rack 1
4... Lifter 19... Traversal hoist 21... Heat treatment equipment main body 22... Mobile skid 33, 35.50.60... Belt conveyor 37
...Pressure test head 40...Surface plate 42...
Lifting type belt conveyor 46... Pipe end cutting device 48... Tube end cutting machine body 52... Chamfering machine body 63... Lifting type skid Applicant Sumitomo Metal Industries Co., Ltd. Agent Patent attorney Yoshihisa Oshida C =1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] Heat treatment of U-bend pipe, pressure test, shape modification, pipe end cutting,
The process consists of pipe end chamfering, inspection, and cleaning.
An online refining facility for U-bend pipes that transports the U-bend pipes in a direction perpendicular to the axial direction of the parallel pipe portions,
A cart-type rack device with a lifter that stores multiple U-bend pipes in a stacked manner from the upstream side.
A curved section heat treatment device having a heat treatment device body movable in the axial direction of the parallel tube portion of a bent pipe and a movable skid, a pressure test device having an elevating clamp device and a pressure test head that can move back and forth, and a dehydration drying device. , a tube end cutting/shape modification surface plate device having a surface plate equipped with an elevating belt conveyor, a clamp device, and a tube end cutting device, a clamp device, a tube end clamping mechanism, a cutting tool forward/backward movement mechanism, and a left/right movement mechanism. A pipe end chamfering device having a chamfering machine main body, and an inspection/cleaning device having an elevating skid are successively installed, and the pipe end chamfering device has a pipe end chamfering device having a chamfering machine main body, and an inspection/cleaning device having an elevating skid. U-bend pipe refining equipment, characterized in that the hoist is of a type that uses a belt conveyor as the pipe transport means after the pressure test device.