Rod anode X-ray machine quick-loading card mechanism and its film cassette and assembly card head

Abstract

The present patent application provides a rod anode X-ray machine quick-loading card mechanism and its film cassette and assembly chuck. The rod anode X-ray machine quick-loading card mechanism includes two major parts: an assembled film cassette and an assembled chuck, wherein the film cassette body, the cassette cover and the locking nut, wherein the locking nut is provided with a locking ring groove on the circumferential surface; the assembly chuck includes a card-mounting box and an insertion card that pass through and are fixed at the root of the anode rod of the rod anode X-ray machine, the card-mounting box is provided with an assembly hole for the locking nut for embedding the film cassette, and a slot for slidingly fitting the insertion card is provided in the radial direction of the assembly hole and in the axial position corresponding to the locking ring groove of the locking nut after the film cassette is embedded. The present technical solution not only maintains the technical advantages of the existing rod anode X-ray machine without the addition of a card-mounting mechanism in terms of the high efficiency of the detection position setting and conversion operation, but also has the technical effects of firm card mounting and ensuring the consistency of the focal length of the film, thereby improving the quality of flaw detection.

Description

Technical Field

[0001] The present patent application relates to a mechanical clamping mechanism for clamping and fixing a nondestructive flaw detection device at a detection position, and in particular to a tube electrode detection position fixing clamping and positioning mechanism device of a rod anode X-ray machine. Background Art

[0002] The rod anode X-ray machine is the core flaw detection equipment for non-destructive testing of tube-plate welds. It is mainly used for quality detection of welds between tubes and plates in various devices and mechanisms such as evaporators and heat pipes. The detection principle is that the anode rod is inserted into the tube body to be tested, and the film cassette is installed between the rod anode X-ray machine and the tube-plate weld. The anode rod is determined to be coaxial with the tube body to be tested by the compensation block. The micro-focus X-ray generator in the anode rod takes a film by the back irradiation method, and the X-rays penetrate the annular weld of the tube plate backwards, and the film is photosensitive and imaged, providing a physical basis for the film review personnel to judge the quality of the weld.

[0003] At present, the rod anode X-ray machine tube plate weld detection and positioning generally does not add a clamping mechanism, but inserts the front anode rod of the rod anode X-ray machine together with the compensation block into the tube cavity of the tube body to be inspected. The outer diameter of the compensation block matches the inner diameter of the tube body and also supports the main unit of the rod anode X-ray machine. The advantages of the existing detection and positioning method are that the filming conversion is convenient and fast. After the filming is completed, the rod anode X-ray machine and the compensation block can be directly pulled out and then inserted into the next tube body to be inspected, which has high operating efficiency. However, its disadvantages are also obvious. Due to the lack of fastening measures, when the tube plate area is relatively large and many of the tube openings to be inspected are far above the ground, the rod anode X-ray machine is also connected to a high-voltage cable, and the weight of the whole machine outside the tube body is abnormally heavy relative to the inside of the tube body, and it is impossible to ensure that the rod anode X-ray machine will not be pulled out and fall to the ground and damaged; the lack of fastening measures also causes the filming process to affect the consistency of the focal length of the rod anode X-ray machine, and the poor consistency affects the imaging blackness and quality. Summary of the invention

[0004] The invention purpose of this patent application is to add a positioning and clamping mechanism for the tube plate weld detection of a rod anode X-ray machine. In on-site flaw detection, its use not only ensures that the flaw detection equipment does not slip and crash, but also ensures the consistency of the focal length of the film. It also has the efficient flaw detection operation technical requirements that are basically consistent with the existing rod anode X-ray machine's detection position quick positioning and rapid conversion of detection positions, and provides a film cassette and assembly clamp head of a rod anode X-ray machine's quick clamping mechanism.

[0005] The present patent application provides a technical solution for a film cassette of a rod anode X-ray machine quick-loading mechanism, and its main technical content is: a film cassette of a rod anode X-ray machine quick-loading mechanism, which comprises a cassette body, a cassette cover and a locking nut, the cassette body is provided with an externally threaded tube vertically protruding toward the cassette cover, the cassette cover is light-proofly buckled with the edge of the cassette body, including the edge of the externally threaded tube, the locking nut is locked and buckled with the externally threaded tube, and a locking ring groove is provided on the circumferential surface of the locking nut.

[0006] This patent application also provides a technical solution for an assembly clamp head that is engaged with the film cassette of the quick-loading clamp mechanism of a rod anode X-ray machine, and its main technical content is: an assembly clamp head of the quick-loading clamp mechanism of a rod anode X-ray machine, including a clamp box and an insertion card that pass through and are fixed at the root of the anode rod of the rod anode X-ray machine, the front end face of the clamp box is provided with an assembly hole that is coaxial with the anode rod and is used to match the locking nut of the embedded film cassette, the radial direction of the assembly hole and the axial position corresponding to the locking ring groove of the locking nut after the film cassette is embedded are provided with a slot for slidingly engaging the insertion card, and the inner end of the insertion card is provided with an arc-shaped locking plate for embedding and locking in the locking ring groove of the locking nut.

[0007] One of the preferred technical means of the above-mentioned overall solution is that a spring ball pin is provided on one side surface of the slot, and a spherical recess that cooperates with the spring ball pin is provided on the lower locking position and the upper unlocking and opening position of the card, so that the card can remain stable in the locking position and the unlocking and opening position, and it is also convenient for the operator to obtain a sense of position.

[0008] The technical solution of the film cassette and assembly clamp head of the quick-loading clamp mechanism of the rod anode X-ray machine disclosed in this patent application, the cooperation of the film cassette and the assembly clamp head can quickly and accurately lock the rod anode X-ray machine to the tube plate detection position, and can also quickly unlock it from the detection position to achieve the purpose of efficient detection position conversion operation. It not only maintains the technical advantages of the existing rod anode X-ray machine detection position flaw detection setting and conversion operation efficiency without adding a clamping mechanism, but also has the technical effects of firm clamping, improving the safety of the use of the rod anode X-ray machine, and ensuring the consistency of the focal length of the film, thereby improving the quality of flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 , Figure 2 They are respectively the main view and the cross-sectional structure diagram of the object to be inspected involved in this patent application. The rod anode X-ray machine is a welding quality inspection device for the weld between the tube body and the tube sheet.

[0010] Figure 3 , Figure 4 They are the main structure diagram and the cross-sectional structure diagram of the film cassette respectively.

[0011] Figure 5 This is a structural diagram of the assembly clamp fixedly installed on the rod anode X-ray machine host.

[0012] Figure 6 It is a cross-sectional view of the clamping structure of the rod anode X-ray machine in the detection position locking state.

[0013] Figure 7 , Figure 8 They are the main view and cross-sectional structure diagram of the assembled clamp head respectively.

[0014] Fig. 9 A top view of the front plate in the assembly chuck. DETAILED DESCRIPTION

[0015] The rod anode X-ray machine quick-loading card mechanism provided in this patent application includes two major parts: a film cassette and an assembly card head that are mechanically assembled and matched. During film testing, the rod anode X-ray machine is locked in the tube plate weld detection position, and has the technical advantages of convenient and quick locking and unlocking operations.

[0016] The film cassette is composed of a box body 2, a box cover 3 and a locking nut 4. The box body 2 is a filter plate. According to the tube plate and the detection process requirements, it is provided with at least one or more externally threaded tubes 5 extending in the direction of the box cover and protruding vertically, which are consistent with the tube opening spacing of the tube plate. The diameter of the externally threaded tube 5 is not less than the diameter of the anode rod of the rod anode X-ray machine. Before the detection and filming, the box cover 3 is light-proofed with the edge of the box body 2, and also includes the edge of the externally threaded tube. The film 1 is light-proofed and buckled between the box cover 3 and the box body 2. The locking nut 4 and the externally threaded tube 5 are threadedly matched to lock and complete the assembly of the film 1 and the film cassette. The film cassette can choose a film with a self-contained dark bag, or directly load the film into a dark box with a dark compartment. The fixing part, such as the fixed screw inspection, is fixed to the tube plate by the fixing hole 6 on the film cassette, so that the externally threaded tube 5 is coaxial with the tube body to be detected, and the positioning and installation of the film cassette and the tube plate are completed.

[0017] The locking nut 4 has a locking ring groove 23 on its circumferential surface.

[0018] The assembly card head matched with the above-mentioned film cassette carding comprises a carding box and an inserting card 15.

[0019] The card-mounted box passes through the anode rod 8 of the rod anode X-ray machine and is fixed on the main unit 7 at the root of the anode rod 8. Figure 6 , Figure 7In the embodiment shown, the card-mounted box includes a base body 10 and a front plate 11 at the front end of the base body 10. A protruding assembly seat 110 is provided on the back side of the front plate 11. The assembly seat 110 of the front plate 11 is embedded in the assembly groove 100 of the base body 10, passes through the anode rod, and is fixed together on the main body 7 at the root of the anode rod 8. A mounting hole 111 is provided at the center of the front plate 11, which is coaxial with the anode rod 8 and matches the outer diameter of the locking nut 4 of the film cassette. A slot 22 is provided in the front plate 11 at the radial direction of the mounting hole 111 and at the axial position corresponding to the locking snap ring groove 23 after the locking nut 4 of the film cassette is embedded. The slot 22 is a sliding guide groove for the card 15. In this embodiment, a guide slide 24 is provided on the card 15, which is slidably matched with the guide pin 14 on the base body 10 that penetrates into the slot 22; the inner end of the card 15 is provided with an arc-shaped locking piece 17 for being embedded and locked in the locking snap ring groove 23 of the locking nut 4.

[0020] Before implementing the film flaw detection, as mentioned above, the film cassette with the film 1 must be fixedly installed on the tube sheet. At this time, the external threaded tube 5 of the film cassette is coaxial with the tube body to be tested on the tube sheet; the card-mounted box must also be fixedly installed on the mainframe 7 of the rod anode X-ray machine, such as Figure 5 As shown, at this time, the anode rod 8 of the rod anode X-ray machine is coaxial with the assembly hole 111 of the card box; the insertion card 15 is lifted up to make its arc-shaped locking piece 17 leave the assembly hole 111; the anode rod 8 is extended into the external threaded tube 5 of the film cassette until the locking nut 4 of the film cassette fits and is embedded in the assembly hole 111 of the card box. At this time, the locking ring groove 23 corresponds to the position of the slot 22, and the insertion card 15 is pushed inward until its arc-shaped locking piece 17 is embedded and locked in the locking ring groove 23, that is, the detection position of the rod anode X-ray machine is locked. Regardless of the height or tilt state of the tube plate, the quick-loading card mechanism can ensure the firmness and stability of the rod anode X-ray machine in the detection position, thereby improving its safety in use. In addition, it also ensures the consistency of the focal length of the radiation focus 9 for each filming, thereby improving the blackness and quality of the filming.

[0021] like Figure 7 In the illustrated embodiment structure, in order to prevent the card 15 from being dislocated from its original position in the lower locking position or the upper unlocking and opening position due to its own vibration or misoperation, and also to enable the operator to clearly sense whether it is in the correct upper locking position and lower unlocking and opening position, a spring ball pin 16 is provided on one side of the slot 22, and the card 15 is provided with a spherical recess 18 that cooperates with the spring ball pin 16 in both the upper locking position and the lower unlocking and opening position.

Claims

1. A rod anode X-ray machine quick-loading card mechanism, characterized in that: The invention comprises two parts, a film cassette and an assembly chuck, wherein the film cassette comprises a cassette body (2), a cassette cover (3) and a locking nut (4); the cassette body (2) is provided with an externally threaded tube (5) vertically protruding toward the cassette cover (3); the cassette cover (3) is light-proofly buckled with the edge of the cassette body (2), including the edge of the externally threaded tube (5); the locking nut (4) is locked and buckled with the externally threaded tube (5); the circumferential surface of the locking nut (4) is provided with a locking ring groove (23); the assembly chuck comprises a nut passing through the cassette body (2); A card box and a card insert (15) are fixed to the root of an anode rod (8) of a rod anode X-ray machine. The front end surface of the card box is provided with an assembly hole (111) coaxial with the anode rod (8) and used to match a locking nut (4) embedded in a film cassette. A slot (22) for slidingly fitting the card insert is provided in the radial direction of the assembly hole (111) and in an axial position corresponding to a locking ring groove (23) of the locking nut after the film cassette is embedded. The inner end of the card insert (15) is provided with an arc-shaped locking piece (17) for embedding and locking in the locking ring groove (23) of the locking nut.

2. The rod anode X-ray machine quick-loading card mechanism according to claim 1, characterized in that: A spring ball pin (16) is provided on one side surface of the slot (22), and the card insertion (15) is provided with a spherical concave (18) that cooperates with the spring ball pin (16) in both the lower locking position and the upper unlocking position.

3. The rod anode X-ray machine quick-loading card mechanism according to claim 1, characterized in that: The card-mounted box comprises a base body (10) and a front plate (11) at the front end surface of the base body (10); a raised assembly seat (110) is provided on the back side of the front plate (11) for being embedded in an assembly groove (100) of the base body (10) so that the front plate (11) and the base body (10) are fitted and fixed on a rod anode X-ray machine mainframe at the root of the anode rod (8); and an assembly hole (111) is provided at the center of the front plate (11) and is matched with the outer diameter of a locking nut (4) of a film cassette.

4. The rod anode X-ray machine quick-loading card mechanism according to claim 1 or 2, characterized in that: The card inserting (15) is provided with a guide slideway (24) which is slidably matched with a guide pin (14) on the seat body (10) which is inserted into the slot (22).

5. A film cassette of the quick-loading card mechanism of the rod anode X-ray machine as claimed in claim 1.

6. An assembly clamp head of the rod anode X-ray machine quick-install clamp mechanism as described in claims 1-4.

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