阅读说明：本技术 一种压力容器射线检测伸缩限位支撑架 (Telescopic limiting support frame for radiographic inspection of pressure container ) 是由 田金龙 何永彬 叶飞 李哲 刘思文 于 2019-11-07 设计创作，主要内容包括：本发明涉及一种压力容器射线检测伸缩限位支撑架,包括凹型槽支架、伸缩限位部分和锁紧万向轮,凹型槽支架共两组,用于支撑探伤设备；每组凹型槽支架由两块凹型槽和两个支腿连接而成,伸缩限位部分用于根据压力容器的尺寸改变支撑架的高度,由带刻度的可拆伸缩管和限位装置组成,可拆伸缩管插入支腿的内部,通过限位装置对可拆伸缩管进行锁紧固定,锁紧万向轮安装在可拆伸缩管的底部,用于实现支撑架的自由活动以及固定。本发明将日常探伤机所用的直管支架结构改为具有限位带滑动结构的支撑架,能够减少各种规格直管使用、存放及消耗。(The invention relates to a telescopic limiting support frame for radiographic inspection of a pressure container, which comprises two groups of concave groove supports, telescopic limiting parts and locking universal wheels, wherein the two groups of concave groove supports are used for supporting flaw detection equipment; every group concave groove support is formed by connecting two concave grooves and two landing legs, and flexible spacing portion is used for changing the height of support frame according to pressure vessel's size, comprises the removable flexible pipe and the stop device who take the scale, and removable flexible pipe inserts the inside of landing leg, locks fixedly through stop device to removable flexible pipe, and the locking universal wheel is installed in the bottom of removable flexible pipe for realize the free activity and the fixing of support frame. The invention changes the straight pipe support structure used by the daily flaw detector into the support frame with a limit belt sliding structure, and can reduce the use, storage and consumption of straight pipes of various specifications.)

1. The telescopic limiting support frame for the ray detection of the pressure container is characterized by comprising a concave groove support, a telescopic limiting part and a locking universal wheel; wherein the content of the first and second substances,

the two groups of the concave groove supports are used for supporting flaw detection equipment; each group of the concave groove supports is formed by connecting two concave grooves and two support legs, and the two support legs are respectively connected with two ends of the two concave grooves which are arranged up and down; the telescopic limiting part is used for changing the height of the support frame according to the size of the pressure container, and consists of a detachable telescopic pipe with scales and a limiting device, wherein the detachable telescopic pipe is inserted into the supporting leg, the whole height of the support frame is changed by controlling the length extending out of the supporting leg, and the detachable telescopic pipe is locked and fixed by the limiting device, so that the limiting and fixing of the detachable telescopic pipe are realized, and the support frame is prevented from falling when bearing flaw detection equipment; the locking universal wheel is arranged at the bottom of the detachable telescopic pipe and used for realizing free movement and fixation of the support frame.

2. The telescopic limit support frame of claim 1, wherein the concave groove is made of steel.

3. The telescopic limit support frame of claim 1, wherein the concave groove and the two legs are connected by welding.

4. The telescopic limit support frame of claim 1, wherein the limit device is a locking screw.

Technical Field

The invention belongs to the technical field of radiographic inspection of pressure vessel welded joints, and particularly relates to a telescopic limiting support frame for radiographic inspection of a pressure vessel.

Background

The conventional pressure vessel ray detection bracket consists of two straight pipes, the length of the straight pipe is determined according to the inner diameter of a detected vessel, the diameter of the pressure vessel is generally 1200-4000 mm, and the larger the diameter of the vessel is, the larger the length of the straight pipe and the diameter of the straight pipe are, considering the bearing capacity of the straight pipe. As the diameters of the pressure vessels have various specifications, straight pipes with various specifications are required to be manufactured, the straight pipes are all processed by straight pipes with the diameter of 34 mm-50 mm, the consumption of the straight pipes with different specifications invisibly increases the detection cost, and the straight pipes used by the large-diameter pressure vessels are difficult to use as the diameters of the used straight pipes are larger in consideration of the weight of ray detection equipment in the use process. Therefore, a telescopic limiting support frame for the ray detection of the pressure container needs to be developed.

Disclosure of Invention

Technical problem to be solved

The invention provides a telescopic limiting support frame for radiographic inspection of pressure vessels, which aims to solve the technical problem of how to adapt to the use of the support frame for the pressure vessels with different specifications.

(II) technical scheme

In order to solve the technical problem, the invention provides a telescopic limiting support frame for radiographic inspection of a pressure container, which comprises a concave groove support, a telescopic limiting part and a locking universal wheel; wherein, the concave groove brackets are divided into two groups and used for supporting flaw detection equipment; each group of the concave groove supports is formed by connecting two concave grooves and two support legs, and the two support legs are respectively connected with two ends of the two concave grooves which are arranged up and down; the telescopic limiting part is used for changing the height of the support frame according to the size of the pressure container and consists of a detachable telescopic pipe with scales and a limiting device, the detachable telescopic pipe is inserted into the supporting leg, the integral height of the support frame is changed by controlling the length extending out of the supporting leg, and the detachable telescopic pipe is locked and fixed by the limiting device, so that the limiting and fixing of the detachable telescopic pipe are realized, and the support frame is prevented from falling when bearing flaw detection equipment; the locking universal wheel is arranged at the bottom of the detachable extension tube and used for realizing free movement and fixation of the support frame.

Furthermore, the concave groove is made of steel.

Further, the concave groove and the two support legs are connected in a welding mode.

Further, the limiting device is a locking screw.

(III) advantageous effects

The invention provides a telescopic limiting support frame for radiographic inspection of a pressure container, which comprises a concave groove support, a telescopic limiting part and a locking universal wheel; wherein, the concave groove brackets are divided into two groups and used for supporting flaw detection equipment; each group of the concave groove supports is formed by connecting two concave grooves and two support legs, and the two support legs are respectively connected with two ends of the two concave grooves which are arranged up and down; the telescopic limiting part is used for changing the height of the support frame according to the size of the pressure container and consists of a detachable telescopic pipe with scales and a limiting device, the detachable telescopic pipe is inserted into the supporting leg, the integral height of the support frame is changed by controlling the length extending out of the supporting leg, and the detachable telescopic pipe is locked and fixed by the limiting device, so that the limiting and fixing of the detachable telescopic pipe are realized, and the support frame is prevented from falling when bearing flaw detection equipment; the locking universal wheel is arranged at the bottom of the detachable extension tube and used for realizing free movement and fixation of the support frame.

The invention changes the straight pipe support structure used by the daily flaw detector into the support frame with a limit belt sliding structure, and can reduce the use, storage and consumption of straight pipes of various specifications.

Drawings

Fig. 1 is a schematic view of an overall structure of a telescopic limit support frame according to an embodiment of the invention.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

The embodiment provides a telescopic limiting support frame for radiographic inspection of a pressure container, which has a structure shown in fig. 1 and comprises a concave groove support, a telescopic limiting part and a locking universal wheel.

The concave groove supports are two groups and are mainly used for supporting flaw detection equipment. Each group of concave groove support is formed by welding two steel concave grooves 1 and two supporting legs 2, and the two supporting legs 2 are respectively welded at two ends of the two concave grooves 1 which are arranged up and down.

The telescopic limiting part is mainly used for changing the height of the support frame according to the size of the pressure container and consists of a detachable telescopic pipe 3 with scales and a limiting device 4. Wherein, removable flexible pipe 3 inserts the inside of landing leg 2, through the length that scale control stretches out from landing leg 2 is inside, changes the whole height of support frame to through stop device 4, like locking screw, lock fixed to removable flexible pipe 3, thereby realize removable flexible pipe 3's spacing fixed, prevent that the support frame from taking place the whereabouts when bearing the inspection equipment.

The locking universal wheel 5 is arranged at the bottom of the detachable extension tube 3 and used for realizing free movement and fixation of the support frame.

In the detection process of the container welding joint, the detection process is divided into longitudinal welding joint detection and circumferential welding joint detection, when the circumferential welding joint detection is carried out, the telescopic limiting support frames are placed at symmetrical designated positions on two sides of the welding joint, and the telescopic limiting support frames are moved to the positions needing to be positioned and fixed according to the diameter of the container; when the longitudinal welding joint is detected, the telescopic limiting support frame is placed on the outer side of the container, the height of the telescopic limiting support frame is adjusted according to the height of the container, and the transillumination window of the ray machine is perpendicular to the longitudinal welding joint, so that the vertical transillumination is realized.

The telescopic limiting support frame for the radiographic inspection of the pressure container can meet the requirement of the inspection of a longitudinal circumferential welding joint of a large-sized (DN 1200-4000 mm) container, can accurately select the central transillumination central point of the circumferential welding joint of the container, is extremely convenient for the longitudinal transillumination inspection of the longitudinal welding joint, can realize vertical transillumination, and avoids the phenomenon that the image is enlarged to generate defect enlargement due to the fact that the longitudinal transillumination inspection of the longitudinal welding joint is inclined because the height of the large container is too high. This flexible spacing support frame easy operation, use convenient, dependable performance, size are accurate, and applicable radius scope is big, and the biggest characteristics are using flexible spacing support frame to replace conventional many specifications straight tube to can reduce the use of a large amount of not isodiametric straight tubes, guarantee the accuracy of central point position moreover, guarantee that bundle of rays evenly shoots the film on, promote detection quality, accelerate detection speed, improve intensity of labour, the simple easy usefulness of field control.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.