Helium leak detection device for stainless steel clean pipeline and pipe fitting

Abstract

The utility model discloses a stainless steel clean pipeline and pipe fitting helium leak detection device which comprises a pipe conveying frame (1), a helium leak detection station and a carrying station are sequentially arranged on the pipe conveying frame (1) in the conveying direction, a helium leak detection mechanism (2) is arranged on the outer side of the helium leak detection station, and the stainless steel clean pipeline and pipe fitting helium leak detection device is characterized by further comprising an artificial flaw detection station located between the helium leak detection station and the carrying station. A pipe rotating mechanism is arranged on the manual flaw detection station and comprises a pipe rotating frame (3) rotationally connected with a pipe conveying frame (1), a first telescopic rod (4) is arranged outside the pipe rotating frame (3), a pipe falling opening (5) is formed in the position, on the outer side of the pipe rotating frame (3), of the pipe conveying frame (1), a temporary storage frame (6) is arranged below the pipe falling opening (5), and the pipe conveying frame (1) and the temporary storage frame (6) are arranged in an up-down staggered mode. According to the utility model, the processing efficiency of the stainless steel clean pipe can be improved and the workload of operators can be reduced.

Description

Technical Field

[0001] The utility model relates to a stainless steel clean pipe processing device, in particular to a stainless steel clean pipeline and pipe fitting helium leak detection device. Background Art

[0002] After stainless steel clean pipes are processed and formed, they need to be inspected by flaw detection equipment. Currently, the commonly used flaw detection methods include helium leak detection, ultrasonic flaw detection and manual flaw detection. Among them, helium leak detection is to fill helium into the inner hole of the pipe fitting, and then detect the helium content inside and outside the pipe fitting to determine whether there is a gap on the surface of the pipe fitting that causes helium to overflow; ultrasonic flaw detection is to detect the pipe fitting through an ultrasonic probe to detect whether there are small and deep cracks on the surface of the pipe fitting; manual flaw detection is to observe the surface of the pipe fitting with the human eye to detect whether there are indentations on the surface of the pipe fitting that are visible to the naked eye but shallow in depth. Since the functions and effects of the three flaw detection methods are different, manufacturers will combine the above flaw detection methods according to needs in actual production to ensure the detection effect of stainless steel clean pipes.

[0003] On the basis of the above, the existing flaw detection method for clean stainless steel pipes is to first detect the pipe fittings with helium leak detection equipment or ultrasonic flaw detection equipment, and the unqualified pipe fittings are individually extracted by the operators and sent to the finishing station for repair, and the qualified pipe fittings are centrally hoisted to the manual flaw detection station for flaw detection. Similarly, after the indentation on the surface of the pipe fitting is detected, it is individually extracted and sent to the finishing station for repair, and the qualified pipe fittings are centrally hoisted to the next station for packaging. However, the defect of this method is that, on the one hand, the batch processing of the two flaw detection processes will reduce the processing efficiency of clean stainless steel pipes, and on the other hand, when unqualified pipe fittings appear, the operators need to extract the pipe fittings individually, which increases the workload of the operators and further reduces the processing efficiency.

[0004] Therefore, the existing flaw detection method for stainless steel clean pipes has the problems of low processing efficiency and large workload. Utility Model Content

[0005] The utility model aims to provide a helium leak detection device for clean stainless steel pipelines and pipe fittings, which can improve the processing efficiency of clean stainless steel pipes and reduce the workload of operators.

[0006] The technical solution of the utility model is as follows: a helium leak detection device for clean stainless steel pipelines and pipe fittings comprises a pipe delivery rack, on which a helium leak detection station and a handling station are sequentially arranged along the delivery direction, a helium leak detection mechanism is arranged outside the helium leak detection station, and a manual flaw detection station is arranged between the helium leak detection station and the handling station, a pipe rotating mechanism is arranged on the manual flaw detection station, the pipe rotating mechanism comprises a pipe rotating rack rotatably connected to the pipe delivery rack, a first telescopic rod is arranged outside the pipe rotating rack, a pipe drop opening is arranged on the pipe delivery rack outside the pipe rotating rack, a temporary storage rack is arranged below the pipe drop opening, and the pipe delivery rack and the temporary storage rack are arranged in an up-down staggered manner;

[0007] When the first telescopic rod is in an extended state, the pipe rotating rack is in a high position and is used to transport the pipes to the handling station;

[0008] When the first telescopic rod is in a retracted state, the pipe rotating rack is in a low position and is used to transport the pipes to the temporary storage rack.

[0009] In the aforementioned stainless steel clean pipeline and pipe fitting helium leak detection device, when the rotating tube rack is in a high position, the rotating tube rack is arranged downwardly at an angle along the direction of the transporting station, and the top ends of the rotating tube rack are respectively flush with the surfaces of the tube delivery racks on both sides of the tube drop port.

[0010] In the aforementioned stainless steel clean pipeline and pipe fitting helium leak detection device, the temporary storage rack is arranged downwardly along the pipe drop opening, a first hanger is arranged on the temporary storage rack directly below the pipe drop opening, and the handling station is arranged at the end of the pipe delivery rack and is provided with a second hanger.

[0011] In the aforementioned stainless steel clean pipeline and pipe fitting helium leak detection device, the first hanger and the second hanger have the same structure, both including a U-shaped placement cavity, a flexible sling is provided in the placement cavity, the middle part of the flexible sling hangs downward, and the two ends of the flexible sling can be detachably connected to the pipe delivery rack or the temporary storage rack.

[0012] In the aforementioned stainless steel clean pipeline and pipe fitting helium leak detection device, the rotating pipe rack is provided with a flap rotatably connected to the pipe feeding rack on the side close to the helium leak detection station, the flap is V-shaped, and the outside of the flap is connected to a second telescopic rod.

[0013] In the aforementioned helium leak detection device for clean stainless steel pipelines and pipe fittings, a flaw detection groove is provided on the pipe delivery rack on one side of the flap, and a roller for supporting and rotating the pipe fitting is provided in the flaw detection groove.

[0014] Compared with the prior art, the utility model has the following characteristics:

[0015] (1) The utility model defines the structure of the manual flaw detection station so that when the operator detects defects on the surface of the pipe fitting, the operator can control the rotating pipe rack to descend to a low position through the first telescopic rod, so that the pipe fitting can roll along the pipe delivery rack and the rotating pipe rack to the temporary storage rack below for temporary storage; when the pipe fitting is qualified, the operator can control the rotating pipe rack to rise through the first telescopic rod, so that the pipe fitting can roll along the pipe delivery rack and the rotating pipe rack to the handling station at the end, that is, the pipe fitting can be sorted and transported; and under the above cooperation, the operator does not need to extract the pipe fittings separately during the manual flaw detection process, which effectively improves the processing efficiency of the stainless steel clean pipe and reduces the workload of the operator;

[0016] (2) By matching and defining the structure of the first hanger and the second hanger, the pipe fittings can be stacked, which makes it convenient for manufacturers to hoist the pipe fittings;

[0017] (3) By coordinating the structures of the flap, flaw detection groove and roller, the operator can place the pipe fittings in the flaw detection groove during the inspection and control the free rotation of the pipe fittings through the roller; when the pipe fittings are inspected, the operator first switches the state of the rotating pipe rack, and then uses the flap to transport the pipe fittings in the flaw detection groove, so that the pipe fittings are automatically transported forward and enter the corresponding position under the driving action, that is, the automatic transportation of the pipe fittings is realized, further reducing the workload of the operator;

[0018] Therefore, the utility model can improve the processing efficiency of the stainless steel clean pipe and reduce the workload of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model when the rotating pipe rack is in a high position;

[0020] Figure 2 It is a structural schematic diagram of the utility model when the rotating pipe rack is in a low position.

[0021] The markings in the attached drawings are: 1-pipe delivery rack, 2-helium leak detection mechanism, 3-pipe rotating rack, 4-first telescopic rod, 5-pipe drop port, 6-temporary storage rack, 7-first hanger, 8-second hanger, 9-placing cavity, 10-flexible sling, 11-flap, 12-second telescopic rod, 13-flaw detection slot, 14-roller. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0023] Embodiment. A helium leak detection device for clean stainless steel pipelines and pipe fittings, comprising: Figure 1As shown, it includes a pipe delivery rack 1, the number of which is multiple and arranged side by side with each other, a helium leak detection station and a handling station are sequentially arranged on the pipe delivery rack 1 along the conveying direction, a helium leak detection mechanism 2 is arranged on the outer side of the helium leak detection station, and the helium leak detection mechanism 2 is a conventional helium leak detection mechanism used for pipe flaw detection, and also includes a manual flaw detection station located between the helium leak detection station and the handling station, and a pipe rotating mechanism is arranged on the manual flaw detection station, the pipe rotating mechanism includes a pipe rotating rack 3 rotatably connected to the pipe delivery rack 1, a first telescopic rod 4 is arranged on the outer side of the pipe rotating rack 3, a pipe drop port 5 is arranged on the pipe delivery rack 1 outside the pipe rotating rack 3, and a temporary storage rack 6 is arranged below the pipe drop port 5, the number of the temporary storage rack 6 is multiple and arranged side by side with each other, the pipe delivery rack 1 and the temporary storage rack 6 are arranged in an upper and lower staggered manner, and the surfaces of the pipe delivery rack 1, the pipe rotating rack 3 and the temporary storage rack 6 can be paved with rubber belts, so that the rubber belts are used to fit the pipes to avoid surface scratches of the pipes during transportation;

[0024] When the first telescopic rod 4 is in the extended state, the rotating pipe rack 3 is in the high position and is used to transport the pipes to the handling station;

[0025] When the first telescopic rod 4 is in a retracted state, the pipe rotating rack 3 is in a low position and is used to transport the pipes to the temporary storage rack 6 .

[0026] When the rotating pipe rack 3 is in a high position, the rotating pipe rack 3 is arranged to be inclined downward along the direction of the transport station, and the two ends of the top of the rotating pipe rack 3 are respectively flush with the surfaces of the pipe delivery rack 1 on both sides of the pipe drop port 5; when the rotating pipe rack 3 is in a low position, the end height of the rotating pipe rack 3 is higher than the top surface height of the temporary storage rack 6 at this position.

[0027] The temporary storage rack 6 is arranged downwardly and inclined along the pipe drop opening 5 , and a first hanger 7 is provided on the temporary storage rack 6 directly below the pipe drop opening 5 . The handling station is arranged at the end of the pipe delivery rack 1 and is provided with a second hanger 8 .

[0028] The first hanger 7 and the second hanger 8 have the same structure and both include a U-shaped placement cavity 9. A flexible sling 10 is provided in the placement cavity 9. The middle part of the flexible sling 10 hangs downward, and both ends of the flexible sling 10 are detachably connected to the pipe delivery rack 1 or the temporary storage rack 6.

[0029] A passage is provided in the middle of the pipe delivery rack 1 and the temporary storage rack 6 for operators to enter and perform lifting operations.

[0030] The rotating tube rack 3 is provided with a flap 11 rotatably connected to the tube feeding rack 1 on one side close to the helium leak detection station. The flap 11 is V-shaped, and a second telescopic rod 12 is connected to the outside of the flap 11. The manufacturer can also install the flap 11 at the front end of the helium leak detection station and on the helium leak detection station as needed, so as to use the flap 11 to realize step-by-step transportation of pipe fittings.

[0031] A flaw detection groove 13 is provided on the pipe delivery rack 1 on one side of the flap 11 , and a roller 14 for supporting and rotating the pipe is provided in the flaw detection groove 13 .

[0032] Working principle of the utility model: When the utility model is used, the helium leak detection mechanism 2 first detects the pipe fittings, and after the detection is completed, the pipe fittings are sent out and rolled toward the handling station. When the pipe fittings roll to the flaw detection groove 13, the operator manually rotates the pipe fittings and detects the surface of the pipe fittings to observe whether there are indentation damages on the surface of the pipe fittings.

[0033] When there is no indentation damage on the surface of the pipe fitting, the operator first controls the pipe rotating rack 3 to rise to a high position, and then controls the flap 11 to rise and flip and transport the pipe fittings in the flaw detection groove 13, so that the pipe fittings roll along the pipe feeding rack 1 and the pipe rotating rack 3 in turn to the first hanger 7 at the end under the flipping action.

[0034] When there is indentation damage on the surface of the pipe fitting, the operator first controls the rotating pipe rack 3 to descend to a low position, and then controls the flap 11 to rise and flip and transport the pipe fitting in the flaw detection groove 13, so that the pipe fitting rolls down along the rotating pipe rack 3 onto the temporary storage rack 6 under the flipping action, and enters the second hanger 8 under the guidance of the temporary storage rack 6.

[0035] When the pipes in the first hanger 7 reach the handling quantity, the operator can tie the slings on the outside of the pipes, and then use the crane to transport the pipes to the next station for packaging. When the pipes in the second hanger 8 reach the handling quantity, the operator can empty the first hanger 7, enter the second hanger 8 from the passage between the adjacent pipe delivery rack 1 and the temporary storage rack 6, and transport the pipes to the repair station in the same way for repair. In this way, the sorting effect of the pipes after inspection is achieved.

Claims

1. A helium leak detection device for clean stainless steel pipelines and pipe fittings, comprising a pipe delivery rack (1), wherein a helium leak detection station and a handling station are sequentially arranged on the pipe delivery rack (1) along a conveying direction, and a helium leak detection mechanism (2) is arranged outside the helium leak detection station, wherein the device is characterized in that: It also includes a manual flaw detection station located between the helium leak detection station and the handling station, wherein the manual flaw detection station is provided with a pipe rotating mechanism, wherein the pipe rotating mechanism includes a pipe rotating frame (3) rotatably connected to the pipe delivery frame (1), a first telescopic rod (4) is provided outside the pipe rotating frame (3), a pipe delivery frame (1) outside the pipe rotating frame (3) is provided with a pipe drop opening (5), a temporary storage frame (6) is provided below the pipe drop opening (5), and the pipe delivery frame (1) and the temporary storage frame (6) are arranged in an up-down staggered manner; When the first telescopic rod (4) is in an extended state, the pipe rotating rack (3) is in a high position and is used to transport the pipes to the handling station; When the first telescopic rod (4) is in a retracted state, the pipe rotating rack (3) is in a low position and is used to transport the pipes to the temporary storage rack (6).

2. The helium leak detection device for clean stainless steel pipelines and pipe fittings according to claim 1, characterized in that: When the pipe rotating rack (3) is in a high position, the pipe rotating rack (3) is arranged to be inclined downward in the direction of the transporting station, and the top ends of the pipe rotating rack (3) are respectively flush with the surfaces of the pipe delivery rack (1) on both sides of the pipe drop opening (5).

3. The helium leak detection device for clean stainless steel pipelines and pipe fittings according to claim 1, characterized in that: The temporary storage rack (6) is arranged obliquely downward along the direction of the pipe drop opening (5), and a first hanger (7) is provided on the temporary storage rack (6) directly below the pipe drop opening (5). The handling station is arranged at the end of the pipe delivery rack (1) and is provided with a second hanger (8).

4. The helium leak detection device for clean stainless steel pipelines and pipe fittings according to claim 3 is characterized in that: The first hanger (7) and the second hanger (8) have the same structure and both include a U-shaped placement cavity (9). A flexible sling (10) is provided in the placement cavity (9). The middle of the flexible sling (10) hangs downward, and both ends of the flexible sling (10) are detachably connected to the pipe delivery rack (1) or the temporary storage rack (6).

5. The helium leak detection device for clean stainless steel pipelines and pipe fittings according to claim 1, characterized in that: The rotating tube rack (3) is provided with a flap (11) rotatably connected to the tube delivery rack (1) on one side close to the helium leak detection station. The flap (11) has a V-shaped appearance, and a second telescopic rod (12) is connected to the outside of the flap (11).

6. The helium leak detection device for clean stainless steel pipelines and pipe fittings according to claim 5, characterized in that: A flaw detection groove (13) is provided on the pipe delivery rack (1) on one side of the flap (11), and a roller (14) for supporting and rotating the pipe is provided in the flaw detection groove (13).

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