Pressure vessel detection device

Abstract

The utility model provides a pressure vessel detection device which comprises a bottom plate, an X-ray flaw detector and a centering mechanism are arranged on the bottom plate, the centering mechanism comprises a lifter and a support, the support is provided with a first centering element and two second centering elements, the two second centering elements are arranged on the support through an approaching and separating structure, and the lifting device is arranged on the support. The first centering element is always positioned right between the two second centering elements; and the support frame is arranged between the X-ray flaw detector and the centering mechanism and is used for transversely supporting the cylinder body of the pressure vessel. According to the utility model, the ray emitting end of the X-ray flaw detector is positioned through the two second centering elements and the first centering element, so that the ray emitting end can be positioned at the dead center position of the barrel body, the accuracy of the focusing position of the ray flaw detector is ensured, and the flaw detection accuracy of a welding seam is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure vessel weld joint detection field, especially a kind of pressure vessel detection device. BACKGROUND

[0002] Pressure vessel is the closed equipment for loading certain pressure or containing flammable and explosive goods.The barrel of pressure vessel is mostly welded by barrel segment, so that weld joint defect detection is the important component indispensable for barrel production of pressure vessel, and the leakproofness of weld joint of pressure vessel is judged by weld joint defect detection.

[0003] At present, in the X-ray flaw detection operation of the weld joint of the barrel of pressure vessel, there is lack of positioning device for focusing the ray emitting end of X-ray flaw detector, and manual visual inspection is needed to determine whether the ray emitting end is located at the center position of the barrel after extending into the barrel, which brings inconvenience to the barrel weld joint flaw detection, affects the weld joint detection efficiency, and the position of the ray emitting end determined by visual inspection is inaccurate, which affects the accuracy of weld joint defect detection. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of pressure vessel detection device to improve the efficiency and accuracy of the barrel weld joint flaw detection of pressure vessel.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A kind of pressure vessel detection device, comprising:

[0007] Bottom plate;

[0008] X-ray flaw detector is arranged at one end of bottom plate by moving lifting frame, and X-ray flaw detector is arranged transversely, and its ray emitting end is towards the other end of bottom plate;

[0009] Centering mechanism is arranged at the other end of bottom plate, and the centering mechanism comprises lifter, the lifting end of the lifter is provided with support, the support is provided with first centering element and two second centering elements arranged above and below, two second centering elements are arranged on support by approaching and separating structure, first centering element and two second centering elements are all arranged towards X-ray flaw detector, and first centering element always keeps in the middle of two second centering elements;

[0010] Support frame is arranged between X-ray flaw detector and centering mechanism, and is used to support the barrel of pressure vessel transversely.

[0011] Further, the approaching and separating structure comprises a vertical two-way screw rod arranged on the bracket, the two-way screw rod is matched with a hand wheel, the two-way screw rod is matched with a nut block respectively through two threads with different rotation directions, and the two second centering elements are arranged on the nut blocks respectively.

[0012] Further, the bracket comprises two vertical plates arranged opposite to each other, the vertical plates are connected with a fixed plate at bottom ends and an installation plate at top ends, the two-way screw rod is arranged between the fixed plate and the installation plate, vertical sliding grooves are arranged on opposite sides of the vertical plates respectively, and the nut blocks are connected with the sliding grooves respectively through left and right sides.

[0013] Further, the first centering element and the second centering element are laser lamps respectively.

[0014] A mark point is arranged at the center of the end face of the ray emitting end of the X-ray detector.

[0015] The device further comprises a positioning structure, the positioning structure comprises two positioning plates, the two positioning plates are arranged on the cylinder of the pressure container in a detachable manner through a fixed member, the two positioning plates are arranged corresponding to the second centering elements, and mark points are arranged on the two positioning plates corresponding to the second centering elements.

[0016] Further, the fixed member is a hoop, and the two second centering elements are arranged on the hoop in a symmetrical manner.

[0017] Further, the lifter is a manual turbine screw rod lifter, and the lifter is arranged on the bottom plate through a fixing frame.

[0018] Further, the bottom plate is provided with two sliding rails corresponding to the movable lifting frame, the sliding rails are arranged at the other end of the bottom plate, and the movable lifting frame is arranged on the two sliding rails in a sliding manner.

[0019] Compared with the prior art, the pressure container detection device has the following advantages:

[0020] (1) In the utility model, the two second centering elements and the first centering element are used to position the ray emitting end of the X-ray detector, so that the ray emitting end can be located at the center of the cylinder, the accuracy of the focusing position of the ray detector is ensured, and the detection accuracy of the weld is improved.

[0021] (2) In the utility model, the second centering element and the first centering element are laser lamps, the two second centering elements are provided with the positioning plates, the positioning plates, the second centering elements and the first centering element of the X-ray detector are provided with mark points, the position relationship of the two second centering elements and the first centering element is determined quickly by using the directional characteristics of the light beams emitted by the laser lamps, the focusing position of the ray detector is determined quickly, and the detection efficiency of the weld of the cylinder of the pressure container is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which form a part of the disclosure, are intended to provide further understanding of the present disclosure and are incorporated herein for illustrative purposes. The schematic embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute improper limitations on the present disclosure. In the drawings:

[0023] Figure 1 A structure schematic diagram of a pressure vessel detection device according to an embodiment of the present disclosure;

[0024] Figure 2 A support structure schematic diagram in the embodiment;

[0025] Figure 3 A positioning structure schematic diagram in the embodiment.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1 - bottom plate; 2 - centering mechanism; 21 - fixed frame; 22 - lifter; 23 - second centering element; 24 - support; 25 - first centering element; 26 - bidirectional screw rod; 27 - nut block; 241 - vertical plate; 242 - mounting plate; 243 - fixed plate; 2411 - sliding groove; 3 - positioning plate; 31 - fixing piece; 4 - support frame; 5 - barrel body; 51 - weld; 6 - X-ray flaw detector; 61 - ray emitting end; 7 - movable lifting frame; 8 - sliding rail; 9 - mark point. DETAILED DESCRIPTION

[0028] The present disclosure will be described in detail below with reference to the accompanying drawings and embodiments.

[0029] As Figure 1As shown in the drawing, a pressure vessel detection device comprises a base plate 1, a mobile lifting frame 7 is arranged at one end of the base plate 1, and the mobile lifting frame 7 can move linearly to the other end of the base plate 1. As preferred, two slide rails 8 are arranged side by side on the base plate 1 corresponding to the mobile lifting frame 7, and the mobile lifting frame 7 is slidably arranged on the two slide rails 8, so as to ensure linear movement of the mobile lifting frame 7. An X-ray detector 6 is horizontally arranged at the lifting end of the mobile lifting frame 7, and a ray emitting end 61 of the X-ray detector 6 is arranged towards the other end of the base plate 1. A centering mechanism 2 is arranged at the other end of the base plate 1, and the centering mechanism 2 comprises a lifter 22, which is preferably a manual turbine screw lifter and is installed on the base plate 1 through a fixing frame 21. A support 24 is arranged at the lifting end of the lifter 22, and the support 24 is provided with a first centering element 25 and two second centering elements 23, which are symmetrically arranged above and below the first centering element 25. The two second centering elements 23 are arranged on the support 24 through an approaching and separating structure, and the first centering element 25 and the two second centering elements 23 are all arranged towards the X-ray detector 6, and the first centering element 25 always keeps in the middle of the two second centering elements 23. A support frame 4 is arranged at a position between the X-ray detector 6 and the centering mechanism 2 on the base plate 1, and the support frame 4 can adopt a V-shaped iron structure or a roller structure and is used for transversely supporting a cylinder body 5 of a pressure vessel. In the embodiment, the support frame 4 adopts the roller structure, which is a commonly used structure for supporting a pipeline and will not be described here.

[0030] The approaching and separating structure comprises a bidirectional screw rod 26 vertically arranged on the support 24, the bidirectional screw rod 26 is matched with a hand wheel, and two thread parts with different rotation directions of the bidirectional screw rod 26 are respectively matched with a nut block 27, and the two second centering elements 23 are respectively arranged on one nut block 27.

[0031] In the utility model, the support 24 is structured as Figure 2As shown, it includes two vertical plates 241 arranged opposite, the bottom end of the two vertical plates 241 is connected with a fixed plate 243, the top end is connected with a mounting plate 242, the fixed plate 243 is connected with the connecting plate on the lifting end of the lifter 22, the bidirectional screw rod 26 is located in the middle of the two vertical plates 241, and the two ends of the bidirectional screw rod 26 are rotationally connected with the fixed plate 243 and the mounting plate 242, and the upper end of the bidirectional screw rod 26 is arranged with a hand wheel after penetrating out of the mounting plate 242. The two vertical plates 241 are vertically arranged with sliding grooves 2411 on the opposite sides, and the left and right sides of the nut sliding block 27 are slidably connected with the sliding grooves 2411. The side of the two vertical plates 241 facing the X-ray flaw detector 6 is provided with the first centering element 25 through a connecting piece, and the vertical first centering element 25 is located in the middle of the two second centering elements 23. The height position of the first centering element 25 is adjusted by the lifter 22, and the positions of the two second centering elements 23 are determined by the circumferential surface of the barrel body 5, so that the first centering element 25 can be centered with the center of the barrel body 5, and the ray emitting end 61 of the X-ray flaw detector 6 can be centered with the center of the barrel body 5, thereby improving the detection accuracy of the weld 51 of the barrel body 5.

[0032] In the utility model, the first centering element 25 and the second centering element 23 are respectively laser lamps. The end face of the ray emitting end 61 of the X-ray flaw detector 6 is provided with a mark point 9 at the center. The positioning structure is arranged corresponding to the two second centering elements 23, and the positioning structure is as shown in the figure, which comprises a fixing piece 31 and two positioning plates 3. The fixing piece 31 is preferably a hoop corresponding to the barrel body 5, and the two positioning plates 3 are arranged at the center positions of the outer circumferential surfaces of the two semicircular fixed rings of the hoop, so that the two positioning plates 3 are symmetrically arranged. The two positioning plates 3 are respectively provided with mark points 9 corresponding to the second centering elements 23. Figure 3

[0033] The operation process of the utility model is as follows: the barrel body 5 of the pressure vessel is placed on the support frame 4, then the fixing piece 31 is installed on the barrel body 5, and the position of the fixing piece 31 is adjusted, so that the two positioning plates 3 are arranged above and below the upper and lower ends of the barrel body 5. The positions of the two second centering elements 23 are adjusted until the light beams emitted by the two second centering elements 23 respectively irradiate the mark points 9 on the corresponding positioning plates 3, which indicates that the positions of the two second centering elements 23 are symmetric about the center of the barrel body 5, that is, it indicates that the first centering element 25 is located on the center line of the barrel body 5. The movable lifting frame 7 is pushed to move towards the barrel body 5 until the ray source of the ray emitting end 61 of the X-ray flaw detector 6 is opposite to the weld 51 of the barrel body 5. The position of the X-ray flaw detector 6 is adjusted in the up-down direction until the mark point 9 on the end face of the X-ray flaw detector 6 towards the centering mechanism 2 receives the light beam emitted by the first centering element 25, which indicates that the ray emitting end 61 of the X-ray flaw detector 6 is located at the center of the barrel body 5. The positioning of the ray emitting end 61 is completed, and then the weld 51 can be detected.

[0034] ​The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure vessel inspection apparatus, characterized by: The device comprises: a base plate (1); an X-ray detector (6) arranged at one end of the base plate (1) through a movable lifting frame (7), the X-ray detector (6) is arranged transversely, and a ray emitting end (61) of the X-ray detector (6) faces the other end of the base plate (1); a centering mechanism (2) arranged at the other end of the base plate (1), the centering mechanism (2) comprises a lifter (22), a support (24) is arranged at a lifting end of the lifter (22), the support (24) is provided with a first centering element (25) and two second centering elements (23) arranged above and below the first centering element (25) through an approaching and separating structure, the first centering element (25) and the two second centering elements (23) are arranged towards the X-ray detector (6), and the first centering element (25) is always kept in the middle of the two second centering elements (23); a support frame (4) arranged between the X-ray detector (6) and the centering mechanism (2) for transversely supporting a cylinder body of a pressure vessel.

2. The pressure vessel inspection apparatus of claim 1, wherein: The approaching and separating structure comprises a bidirectional screw rod (26) arranged vertically on the support (24), the bidirectional screw rod (26) is matched with a hand wheel, two thread parts with different rotation directions of the bidirectional screw rod (26) are respectively matched with a nut block (27), and the two second centering elements (23) are respectively arranged in one nut block (27).

3. A pressure vessel inspection apparatus according to claim 2, wherein: The support (24) comprises two vertical plates (241) arranged opposite to each other, bottom ends of the two vertical plates (241) are connected with a fixed plate (243), top ends of the two vertical plates (241) are connected with a mounting plate (242), the bidirectional screw rod (26) is mounted between the fixed plate (243) and the mounting plate (242), vertical sliding grooves (2411) are respectively arranged on opposite sides of the two vertical plates (241), and left and right sides of the nut block (27) are respectively connected with the sliding grooves (2411) in a sliding mode.

4. The pressure vessel inspection apparatus of claim 1, wherein: The first centering element (25) and the second centering element (23) are respectively laser lamps; a mark point (9) is arranged at a central position of an end surface of the ray emitting end (61) of the X-ray detector (6); The device further comprises a positioning structure, the positioning structure comprises two positioning plates (3), the two positioning plates (3) are arranged on the cylinder body of the pressure vessel in a detachable mode through a fixed member (31) arranged above and below the fixed member (31) in a symmetrical mode, the two positioning plates (3) are arranged correspondingly to the two second centering elements (23), and mark points (9) are arranged on the two positioning plates (3) correspondingly to the second centering elements (23).

5. A pressure vessel inspection apparatus as claimed in claim 4, wherein: The fixed member (31) is a clamp, and the two second centering elements (23) are arranged on the clamp in a symmetrical mode.

6. The pressure vessel inspection apparatus of claim 1, wherein: The lifter (22) is a manual turbine screw rod lifter, and the lifter (22) is mounted on the base plate (1) through a fixing frame (21).

7. The pressure vessel inspection apparatus of claim 1, wherein: The base plate (1) is provided with two slide rails (8) corresponding to the movable lifting frame (7), the slide rails (8) are arranged towards the other end of the base plate (1), and the movable lifting frame (7) is arranged on the two slide rails (8) in a sliding mode.

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