JPH0616976B2 - U-bend pipe finishing equipment - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a U-bend pipe refining treatment facility used for heat exchangers for chemistry, nuclear power, etc., including heat treatment, pressure resistance test, shape correction, pipe end cutting, pipe end chamfering and inspection of U bend pipe. -It relates to a refinement processing facility that performs a series of operations up to cleaning online.

[Prior art]

For the U-bend pipe, after bending a seamless steel pipe or a welded steel pipe, the curved portion was heat-treated, and then a pressure resistance test by air pressure and water pressure, pipe bending correction, pipe end cutting, chamfering and inspection / cleaning were performed. It is generally shipped after being packaged. Each of these operations is carried out by an independent processing device, and the heat treatment of the bending portion is performed by manually placing the U-bend pipe (1) on the heat treatment device main body (2) and skid (3) as shown in FIG. Then, heat treatment is performed by clamping with an electric chuck (4). In addition, the pressure resistance test, as shown in FIG.
Is manually placed on the skid (5), and the pipe end is inserted into a pair of pneumatic and hydraulic heads (6) whose center-to-center distance can be adjusted to perform a pressure resistance test. To correct the shape of the U-bend pipe, manually move the U-bend pipe onto the surface plate manually and then manually mark the cutting position at the pipe end of the parallel pipe section. To U
Bend pipes are placed and the work is done manually using a portable high-speed cutting machine. For chamfering the pipe end, 1 U-bend pipe placed on the skid
The books are pulled out one by one, and the work is done manually using a portable chamfering machine. Further, the U-bend pipe is cleaned and inspected by manually placing the U-bend pipe on the skid, and after completion of the cleaning and inspection, the U-bend pipe is manually carried again to the next step.

[Problems to be Solved by the Invention]

As described above, most of the conventional U-bend pipe finishing work is a manual work, and it takes a lot of time and labor, the work efficiency is low, and the product tends to be distorted or flawed. is there. The present invention has been made in order to solve the above-mentioned drawbacks of the conventional technique, and by bringing the U-bend pipe adjusting process to online, the U-bend pipe adjusting process can be performed to improve work efficiency and quality. It is intended to propose processing equipment.

[Means for Solving the Problems]

This invention is for heat treatment of U-bend pipe, pressure resistance test, shape correction,
The equipments for pipe end cutting, pipe end chamfering, inspection and cleaning are automated as much as possible, and the loading and unloading of materials to and from each device is automated. Equipment for transporting in a direction orthogonal to the axial direction, and a truck-type rack device with a lifter that stores a plurality of U-bend pipes in a stack form from the upstream side, U depending on the length of the U-bend pipe Curved part heat treatment device having a heat treatment device main body movable in the axial direction of the parallel pipe part of the bend pipe and a movable skid, pressure resistance test device having a lifting clamp device and a pressure resistance test head capable of moving forward and backward, dehydration drying device , A plate end cutting / shape correcting platen device having a platen equipped with a lifting belt conveyor, a clamp device and a pipe end cutting device, a clamp device and a pipe end clamp mechanism, a bite forward / backward moving mechanism and left and right A pipe end chamfering device having a chamfering machine main body equipped with a moving mechanism, and an inspection / cleaning device having an elevating skid are serially connected from the upstream side, and between the trolley type rack device with lifter and the pressure resistance test device. A U-bend pipe adjusting treatment facility is characterized in that a transverse hoist is used as the pipe conveying means and a belt conveyer is used as the pipe conveying means after the pressure resistance test device.

[Work]

FIG. 1 is a block diagram showing a U-bend pipe adjusting processing facility and a pipe flow according to the present invention. U-bend pipes are lifted one by one from a trolley-type rack device with lifter by a traverse hoist and carried into the bending part heat treatment device, placed on the movable heat treatment device body and the movable skid, and the bending part is directly energized. Is heat treated. After the heat treatment, the U bend pipe is again lifted by the traverse hoist and carried into the pressure resistance test device. In the pressure resistance test device, the U-bend pipe is moved to a predetermined position by the belt conveyor, fixed by the elevating type clamp device, and then the pressure resistance test head is advanced to perform the test. The pressure resistance test is performed by a pneumatic tester or a hydraulic tester. When the pressure resistance test is completed, the test head is retracted, the clapping device is lowered, and the U bend pipe is placed on the belt conveyor.
Carry it into the dehydration / drying device. When the dehydration and drying of the U-bend pipe is completed, it is carried into the pipe end cutting / shape correction platen device by the belt conveyor, transferred to the lifting belt conveyor provided on the platen, and conveyed to the platen. . Then, the elevating belt conveyor is lowered to place the U-bend pipe on the surface plate, and the shape is corrected. After the shape correction, the U-bend pipe is clamped and fixed at a predetermined position, and then the pipe end is cut by the pipe end cutting device. After the cutting is completed, the elevating belt conveyor is raised again, the U-bend pipe on the surface plate is placed on the belt conveyor, and the pipe is chamfered to the pipe end chamfering device. The U-bend pipe sent by the belt conveyor stops at the chamfering position, and the U-bend pipe is fixed by the clamp device.
After that, the chamfering machine body that can move back and forth and left and right moves and chamfers one by one. After chamfering, the U-bend pipe is conveyed by a belt conveyor,
Carried to inspection / cleaning equipment. The U-bend pipe on the conveyed belt conveyor is inspected and cleaned by elevating the skid to a predetermined height. When the inspection / cleaning is completed, the lifting skid is lowered, the U-bend pipe is placed on the belt conveyor, and sent to the next process.

【Example】

2 to 7 show an example of the basic configuration of each device according to the present invention. FIG. 2 is a schematic perspective view showing a truck type rack device with a lifter according to the present invention, and FIG. FIG. 4 is a schematic perspective view showing the apparatus, FIG. 4 is a schematic perspective view showing the same pressure resistance testing apparatus, FIG. 5 is a schematic perspective view showing the same pipe end cutting / shape correcting platen apparatus, and FIG. 6 is the same pipe end surface apparatus. FIG. 7 is a schematic perspective view showing the same, and FIG. 7 is a schematic perspective view showing the inspection / cleaning device. As shown in Fig. 2, the trolley-type rack device with lifter is
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) on a plurality of carriages (10) on the rail (11), and can be moved up and down by a motor close to the rack. The lifter (14) installed in the
(1) is stacked on the rack (12) and stored, and the lifter (14)
The structure is such that one can be taken out one by one from the top by raising. As shown in FIG. 3, the bending portion heat treatment apparatus for the U-bend pipe is
Rails laid in the axial direction of the parallel pipe part of the U-bend pipe (20)
A motor-driven mobile heat treatment unit body (21) is placed on top of it, and multiple mobile skids are mounted on the same rail (20).
(22) is placed. (23) is an electric chuck. That is, this bending part heat treatment device is arranged such that the position of the heat treatment device main body (21) and the material receiving of the movable skid (22) according to the length of the U-bend pipe (1) conveyed by the transverse hoist (19). The position is variable. The U-bend pipe (1) conveyed by the traverse hoist (19) is placed on the heat treatment apparatus body (21) and the movable skid (22),
The curved portion is heat-treated by the current-carrying chuck (23). As shown in FIG. 4, the pressure resistance test device is a belt conveyor (35) arranged side by side at a desired interval, a lifting clamp device (36) installed close to the conveyor, and a pressure resistance test head that can be moved back and forth ( 37) and a lifting clamp device (3
6) has a retractable clamp claw (38) and a vertical cylinder (39)
The pressure resistant test head (37) is supported by the base plate (31).
It is provided so that it can be moved back and forth by a horizontal cylinder (32) provided above. As a matter of course, the test head (37) can also change its interval according to the pitch of the U-bend pipe (1). At the entrance of this pressure resistance test device, the belt conveyor (3
The carry-in belt conveyor (33) is connected in the same direction as 5). The U-bend pipe (1) conveyed from the heat treatment apparatus is first placed on the carry-in belt conveyor (33), and is transferred onto the belt conveyor (35) of the pressure resistance test apparatus by the belt conveyor and is transferred to the predetermined location. After being stopped at the position and clamped by the lifting clamp device (36), the withstand pressure test head (37) is advanced with the horizontal cylinder (32) to perform the withstand pressure test. When the pressure resistance test is completed, the pressure resistance test head (37) is retracted to separate it from the U bend pipe (1), and the lifting clamp device (3
Release the clamp claw (38) of (6) and remove the belt conveyor (3
5) Lower it to a position lower than the upper surface, place the U-bend pipe (1) on the belt conveyor (35), and convey it to the next dehydration / drying device. In the dehydration / drying device, U is blown by an air injection device (not shown)
Air is passed through the bend pipe to drain and dry the pipe. As shown in FIG. 5, the pipe end cutting / shape correcting platen device has an elevating belt conveyor (42) installed in a groove (41) provided in the platen (40) in parallel with the pipe conveying direction. The elevating belt conveyor (42) is supported by the vertical cylinder (43) so that it can be retracted from the upper surface of the fixed van (40). A clamp device (44) for cutting a pipe is installed at a side end of the surface plate (40), and a clamp claw (45) of the clamp device (44) can be opened and closed by a rack and pinion mechanism or the like. The pipe end cutting device (46) installed close to the clamp device (44) has two pipes on a movable carriage (47) driven by a hydraulic cylinder or the like so that both pipe ends can be cut at the same time. The body of the edge cutter (48) is installed. The U-bend pipe (1) sent from the pressure tester by the belt conveyor is transferred onto the lifting belt conveyor (42) protruding above the flush surface of the surface plate (40) and placed at an appropriate position. After stopping the elevating belt conveyor (42) with, the elevating belt conveyor (42) is lowered by the vertical cylinder (43) to be buried below the upper surface of the surface plate (40), and a U bend pipe Is placed on the surface plate (40). U bend tube on this surface plate (40)
Perform the shape correction work of (1). When the shape modification work is completed, the two pipe end cutting machine bodies (48) are brought close to the pipe while the material is fixed by the clamp claws (45) of the clamp device (44), and the pipe ends are cut at the same time. . In this way, when the shape correction and pipe end cutting of the pipe are completed,
The lifting belt conveyor (42) is raised again, and the U-bend pipe (1) on the surface plate (40) is carried out by the lifting belt conveyor (42), and the chamfering device for the next work is connected. Transfer to a conveyor. As shown in FIG. 6, the pipe end chamfering device comprises a belt conveyor (50) parallel to each other, a clamp device (51) provided in proximity to the belt conveyor (50), and a chamfering machine main body (52). The clamp device (51) is configured to be movable along the conveyor belt (50) manually or automatically on the machine base (53) so that the pipe on the belt conveyor (50) can be positioned and fixed. And is provided with a pair of two open / close type clamp claws (54). In addition, the chamfering machine body (52) has a built-in rotation mechanism for the bite (59) and a pipe end clamp mechanism, and is parallel to the belt conveyor (50) with a horizontal cylinder (56) installed on the machine base (55). A horizontal cylinder (58) is installed on the movable table (5) that is movably mounted on the carriage so that it can move forward and backward. That is, the chamfering machine body
(52) can be moved back and forth and left and right. Of course, the front-back and left-right movement mechanisms of the chamfering machine main body (52) are not limited to those shown here. Pipe end cutting / shape correction Surface plate cutting device to conveyor (49)
The U-bend pipe (1) sent by is transferred onto the belt conveyor (50) of the chamfering device and stopped at the chamfering position, and the clamp device (51) fixes and aligns the pipe. After that, the chamfering machine main body (52) is advanced to first chamfer one side, and then the chamfering machine main body (52) is moved to the belt conveyor (5
Move along (0) and chamfer the other side. When chamfering is completed, the U-bend pipe is installed on the belt conveyor (50).
Unload (1) and transfer it to the conveyor for the connection between the inspection and cleaning devices in the next process. As shown in FIG. 7, the inspection / cleaning device is a belt conveyor which is arranged in parallel on the work deck (61) at a desired interval.
(62) and an elevating skid (63) arranged in parallel along the belt conveyor (62), and each elevating skid (63) has a cylinder (67) driven open / close V block (64) on the upper surface. ), And is supported by a vertical cylinder (65) so that it can be raised and lowered. The U-bend pipe (1) transferred from the pipe end chamfering device by the transfer conveyor (66) is transferred onto the belt conveyor (62) of the inspection / cleaning device and at the same time transferred to the inspection / cleaning position. Stop and then lift skid
(63) is raised and the pipe is received by the V block (64), and the work is performed by raising it to a height at which an operator can easily perform inspection and cleaning. When the inspection and cleaning work is completed, the lifting skid
(63) and lower the U bend pipe (1) to the belt conveyor (6
2) Place on top and send to the next process (packing). It is needless to say that the belt conveyors in the above-mentioned adjustment processing device are arranged in parallel in a large number of rows, and the operation control of each device is carried out by remote control on a control panel (not shown). Absent.

【The invention's effect】

As described above, according to the present invention, since a series of steps from the processing of the curved portion of the U-bend pipe to the thermal inspection / cleaning are brought online, the handling man-hours can be significantly reduced and the U-bend can be highly efficiently performed. Can handle tubes. Further, by reducing the number of handling steps, it is possible to reduce the occurrence of product distortion and flaws, and to stabilize the quality.

[Brief description of drawings]

FIG. 1 is a block diagram showing a U-bend pipe adjusting processing facility and a pipe flow according to the present invention. FIG. 2 is a schematic perspective view showing an example of a truck type rack device with a lifter. 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 above withstand voltage test apparatus. FIG. 5 is a schematic perspective view showing an example of the same bending correction / tube cutting device. FIG. 6 is a schematic perspective view showing an example of the same chamfering apparatus. FIG. 7 is a schematic perspective view showing an example of the inspection / cleaning device of the 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 a conventional pressure resistance testing device. 1 ... U bend pipe, 12 ... moving rack 14 ... lifter, 19 ... transverse hoist 21 ... heat treatment apparatus main body, 22 ... movable skid 33,35,50,60 ... belt conveyor 37 ... Pressure resistant test head, 40 ... Surface plate 42 ... Elevating belt conveyor 46 ... Pipe end cutting device, 48 ... Pipe end cutting machine body 52 ... Chamfering machine body, 63 ... Elevating skid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shigeru Hirao 1st Nishinomachi, Higashimukaijima, Amagasaki City, Hyogo Prefecture Sumitomo Metal Industries, Ltd. Steel Pipe Works (72) Yoshiichi Takimoto 1st Nishinocho, Higashimukaijima, Amagasaki City, Hyogo Prefecture Sumitomo Kinzoku Kogyo Co., Ltd. Steel pipe manufacturing plant (56) Reference JP-A-60-201843 (JP, A)

Claims (1)

[Claims] 1. A process comprising heat treatment, pressure resistance test, shape correction, pipe end cutting, pipe end chamfering, inspection and cleaning of a U-bend pipe, wherein the U-bend pipe is oriented in a direction orthogonal to the axial direction of the parallel pipe portion. An on-line refining treatment facility for U-bend pipes to be transported, which is a truck-type rack device with a lifter that stores a plurality of U-bend pipes in a stack from the upstream side, and a U-bend pipe Curved part heat treatment device having a heat treatment device main body that is movable in the axial direction of the parallel pipe part and a movable skid, pressure resistance test device having a lifting clamp device and a pressure resistance test head that can move forward and backward, a dehydration drying device, and a lifting motion device. A pipe end cutting / shape correcting platen device having a platen equipped with a belt conveyor, a clamp device, and a pipe end cutting device, a clamp device and a pipe end clamp mechanism, a tool forward / backward moving mechanism, and a horizontal moving mechanism A pipe end chamfering device having a chamfering machine main body and an inspection / cleaning device having an elevating skid are sequentially arranged in series, and traverses the pipe conveying means between the dolly rack device with lifter and the pressure resistance test device. A U-bend pipe adjusting processing facility, wherein the hoist is a system that uses a belt conveyor as a pipe conveying means after the pressure resistance test device.