CN112731754A - Radiographic film cartridge replacing method and device based on wireless control - Google Patents

Abstract

The invention discloses a device and a method for replacing a radiographic film cassette based on wireless control, wherein the device comprises: first and second storage chambers including first and second brake mechanisms; a first and a second film cartridge container respectively arranged in the first and the second storage chambers, wherein the container comprises a propelling mechanism and a plurality of arranged film cartridges; wherein the pushing mechanism is used for pushing the film cartridge to move towards the lateral opening of the container box body and moving the film cartridge under the coordination of the braking mechanism; a control chamber located between the first and second storage chambers and including a primary brake that controls forward and backward and/or rotational rotation of the film cartridge. The invention solves the time problem and the safety problem of manual film cartridge replacement, and ensures the effectiveness and the accuracy of the film cartridge replacement process.

Description

Radiographic film cartridge replacing method and device based on wireless control

Technical Field

The invention relates to a film cassette replacing method and device based on wireless control, in particular to a film cassette replacing method and device adopting remote control in an automatic ray detection system, belonging to the field of industrial ray detection.

Background

Radiation detection is a method for detecting internal defects of a weld by using the attenuation characteristic of certain radiation (such as X-rays, gamma rays and the like) when the radiation propagates in a medium and receiving signals on the other side by using a specific medium, wherein the receiving medium is generally an industrial film or a digital ray plate, and the film is put into a film cartridge. For industrial film ray detection, the information storage of the film is disposable, and when the film is actually subjected to single-wall transillumination, if adjacent film positions are shot continuously twice, after the film shooting of a certain time is finished, the film cartridge needs to be replaced to carry out the next shooting.

There are two methods for achieving the purpose of changing the film cartridge. One is by manual replacement. After the film shooting is finished, the exposed film cartridge is taken down and collected, and the unexposed film cartridge is stuck at the correct position of the welding line by using a magnet or an adhesive tape, so that the film cartridge is firm and clings to the welding line. The other is automatic film changing. Chinese patent application No.: 201711165343.3, filing date: 11/21/2017, the patent name of the invention is: the invention discloses an automatic piece distribution device in a nuclear electric moment variable cross-section pipeline. Be equipped with vertical cloth piece mechanism and horizontal cloth piece mechanism on the mounting panel, an equipment can be suitable for two kinds of cloth piece condition demands simultaneously, and the preforming is effectual when can the pinpoint cloth piece position to guarantee detection effect, and the constant force spring wears to locate in the mounting panel, can greatly reduce the whole height of system, thereby both adapted to the size of detection window, satisfy the change that detects the space again. However, the invention is only suitable for pipelines with a certain diameter range, and can only complete the arrangement of one film cartridge at a time, thus being not suitable for the requirement of continuous film shooting and being incapable of remotely changing the film.

Disclosure of Invention

It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed.

One of the objectives of the present invention is to provide a method for changing film cartridges based on wireless control, which is to control the unexposed film cartridge to replace the exposed film cartridge in a non-contact manner within a certain distance after the single exposure is finished, so as to realize continuous radiation exposure. The time problem of replacing the film cartridge manually is solved, and the safety problem of replacing the film cartridge manually is also solved.

Another object of the present invention is to provide a film cartridge exchange device based on wireless control to ensure the effectiveness and accuracy of the film cartridge exchange process.

In order to achieve the above object, the present invention provides a radiographic film cassette exchange apparatus based on wireless control, characterized in that the apparatus comprises:

first and second storage chambers including first and second brake mechanisms;

the first film cartridge containing box and the second film cartridge containing box are respectively arranged in the first storage chamber and the second storage chamber and are used for containing a plurality of film cartridges, and each of the first film cartridge containing box and the second film cartridge containing box comprises a propelling mechanism;

wherein the pushing mechanism is used for pushing the film cartridge to move towards the lateral opening of the container box body and moving the film cartridge under the coordination of the first braking mechanism and the second braking mechanism;

a control chamber located between the first and second storage chambers and including a primary brake that controls forward and backward and/or rotational rotation of the film cartridge.

Preferably, the present invention further provides a radiographic film cassette changer based on wireless control, wherein the film cassette magazine further comprises:

the stop mechanism is arranged at the bottom end of the lateral opening and comprises a rotating baffle, the rotating baffle comprises two arc-shaped protruding steps, an opening is formed in the center of the rotating baffle, the reset elastic mechanism is arranged in a bearing penetrating through the opening, and two ends of the bearing are respectively positioned on the film cartridge containing box and can axially rotate on the film cartridge containing box.

Preferably, the invention further provides a device for replacing the radiographic film cassette based on wireless control, which is characterized in that the main brake comprises an electric device, a rigid pushing handle, a transmission assembly and a cloth piece assembly, wherein a motor shaft of the electric device drives the transmission assembly connected with the rigid pushing handle to drive the cloth piece assembly to move back and forth, the cloth piece assembly comprises a radiographic shielding plate, the radiographic shielding plate is connected with a rotating mechanism, and the rotating mechanism drives the film cassette to rotate through a supporting plate connected with the rotating mechanism.

Preferably, the present invention further provides a radiographic film cassette changer based on wireless control, wherein each of the first and second brake mechanisms comprises:

the pushing mechanism is driven by the electric device to push the film cartridge to move.

Preferably, the present invention further provides a radiographic film cartridge changer based on wireless control, wherein the pushing mechanism includes any one of a conveyor belt and a rigid pushing handle.

Preferably, the invention further provides a radiographic film cassette replacing device based on wireless control, which is characterized in that the propelling mechanism comprises a gravity propeller which is arranged in symmetrical grooves which are inclined along certain slopes on two sides of the inner wall of the containing box, and the lowest ends of the grooves are close to the stopping mechanisms.

Preferably, the present invention further provides a radiographic film cassette changer based on wireless control, wherein the container further comprises:

and the rolling device is arranged at the bottom of the first film cartridge containing box and the second film cartridge containing box and comprises any one of a ball, a rolling shaft and a roller.

Preferably, the invention further provides a radio-ray film cassette replacing device based on wireless control, which is characterized in that the supporting plate is provided with a magnet for fixing the film cassette in an adsorbing way.

Preferably, the present invention further provides a radio-controlled film cartridge changer, wherein the first and second storage chambers each include an opening/closing door for opening/closing the film cartridge container.

The present invention also provides a method for replacing a radiographic film cassette by using the above apparatus for replacing a radiographic film cassette based on wireless control, comprising:

step one, placing an unexposed film cartridge containing box in the first storage chamber, wherein the unexposed film cartridge is pushed to a lateral opening by the pushing mechanism of the first braking mechanism, and an electric device of the first braking mechanism drives the pushing mechanism to push the film cartridge out of the unexposed film cartridge containing box to the direction of the control chamber;

secondly, the cloth piece assembly adsorbs the film cartridge, and the main brake judges and controls the front and back and/or rotation actions of the film cartridge to carry out longitudinal or circumferential welding;

thirdly, the first brake mechanism pushes the next film cartridge to the direction of the control chamber, and the previous film cartridge is pushed into the exposed film cartridge containing box of the second storage chamber through the lateral opening;

and step four, pushing the film cartridge entering the exposed film cartridge containing box by a second pushing mechanism along the direction opposite to the moving direction of the pushing mechanism so as to leave a vacant position for the next film cartridge.

Preferably, the present invention further provides a replacing method, wherein the second step further comprises:

when the longitudinal welding line needs to be exposed, the main brake pushes the film cartridge out of the window to be exposed and compresses the welding line, and the main brake is retracted after exposure is finished;

when the ring to be exposed is required to be welded, the main brake is pushed out to press the welding line, the rotating mechanism rotates the film cartridge by 90 degrees at the same time, and the main brake is retracted after exposure is finished.

The invention solves the time problem and the safety problem of manual film cartridge replacement, and ensures the effectiveness and the accuracy of the film cartridge replacement process.

Drawings

Embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Further, although the terms used in the present disclosure are selected from publicly known and used terms, some of the terms mentioned in the specification of the present disclosure may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present disclosure is understood, not simply by the actual terms used but by the meaning of each term lying within.

The above and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the following detailed description of the present invention with reference to the accompanying drawings.

FIG. 1 is a schematic external view of a radiographic film cassette changer according to the present invention based on wireless control;

FIG. 2 is a schematic view showing the inside of the film cartridge changer of FIG. 1 with the casing removed;

FIG. 3 is a perspective view of the film cartridge container of FIG. 2;

FIG. 4 is a schematic view of the stop mechanism;

FIG. 5 is a top view of FIG. 2;

FIG. 6 is a schematic view of the rigid braking system of the exchange device of the present invention;

FIG. 7(1) is a schematic view of the transmission process of the service brake in the replacing device of the present invention;

FIG. 7(2) is a schematic view of the transmission component of the right brake of the replacing device of the present invention;

FIG. 7(3) is a schematic diagram of the transmission component of the second preferred embodiment of the left brake in the replacing device of the present invention;

FIG. 8 is a flow chart of cassette exchange using the apparatus of the present invention;

fig. 9 is a schematic view showing the composition of the rotating mechanism.

Reference numerals

Radio-controlled film cassette changer

11-outer casing

12-first opening and closing door

13-second switch door

14-Window to be exposed

100-unexposed film cartridge storage chamber

200-exposed film cartridge storage chamber

300-control chamber

400-film cartridge container

401-box body

402, 403-handle

4041-first lateral opening

4042-second lateral opening

405-stop mechanism

4061, 4062-groove

407-gravity thruster

408-rolling device

4051-rotating baffle

4052 bearing

4053-return spring

500-brake system

501-left brake

5011 rigid push handle

5012-electric device

5013 conveyor belt

502-service brake

5021-electric device

5022 rigid pushing handle

5023-drive assembly

5024-cloth piece assembly

50241- -supporting plate

50242 rotating mechanism

502421-rotating shaft

502422-rotating table

50243-ray shielding plate

50244 magnetic attraction

503-right brake

1000-film cartridge

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

Referring to fig. 1, there is shown an external view of a radio controlled film cassette exchange device 1 according to a preferred embodiment of the present invention, wherein a first and a second opening and closing doors 12 and 13 are provided on the same side of a housing 11, the spaces inside the two opening and closing doors are an exposed film cassette storage chamber 200 and an unexposed film cassette storage chamber 100, respectively, and a control chamber 300 is provided between the two storage chambers.

In the preferred embodiment of fig. 1, the film cartridge changer housing 11 is a rectangular parallelepiped and is divided into three chambers, i.e., an unexposed film cartridge storage chamber 100, a control chamber 300 and an exposed film cartridge storage chamber 200 at the left, center and right sides, wherein the control chamber 300 is opened with a window 14 to be exposed near the weld side. The window 14 to be exposed is sized to allow the entrance and exit of a film cartridge of 360mm x 100mm specification or less, and first and second opening and closing doors 12 and 13 are opened on opposite sides of the film cartridge storage chamber from the window 14 to be exposed for the entrance and exit of the film cartridge 1000.

The shell 11 of the invention is composed of three layers of metal structures, wherein the inner layer and the outer layer are iron thin plates or aluminum thin plates, and the middle layer is a lead plate. Which effectively blocks radiation from outside the housing 11 and protects the exposed and unexposed film cartridges inside from scattered radiation.

Fig. 2 further illustrates the structure of fig. 1 with the housing 11 removed, and with the control chamber 300 of the overall apparatus in the middle, and two identical film cartridge containers 400 on either side, one in the unexposed film cartridge storage compartment 100 and one in the exposed film cartridge storage compartment 200, the containers 400 comprising a housing 401, and handles 402, 403 on the sides and top of the housing to facilitate retrieval.

In the embodiment of fig. 2, the film cartridge holding case 400 is a rectangular parallelepiped, and a plurality of film cartridges can be placed upright for holding exposed or unexposed film cartridges.

Fig. 3 further illustrates a perspective view of the film cartridge container 400.

The film cartridge access point is located at the opposite side of the handle 402 at the side of the container outlet 400, and longitudinal first and second lateral openings 4041, 4042 are symmetrically arranged at the two sides of the side for accessing the film cartridge; the bottom of the two openings is also provided with a stopper mechanism 405 which functions to stop the film cartridge.

Two symmetrical grooves 4061, 4062 with a certain slope are arranged on two sides of the inner wall of the container box 401, the lowest ends of the two grooves are close to the stop mechanism 405, and the gravity thruster 407 is arranged above the two grooves.

The gravity thruster 407 pushes the film cartridge in the box body to the first and second lateral openings 4041, 4042 along the two symmetrical grooves 4061, 4062 under the action of gravity, so as to ensure that other films automatically fill the flowing vacancy after the films are taken out, thereby continuously taking the films; the bottom of the container box 401 is provided with rolling means 408 or a smooth surface, and the rolling means 408 includes, but is not limited to, balls, rollers and rollers, and is intended to reduce the resistance to the movement of the film cassette in the container box 401.

Fig. 4 further illustrates the detail of the stop mechanism 405 of fig. 3.

The stopping mechanism 405 includes a rotating baffle 4051, the rotating baffle 4051 has two parallel end faces, the other two end faces are protruding steps, a hole is opened in the center of the rotating baffle 4051, a return spring 4053 is sleeved in the bearing 4052, and the bearing is inserted in the hole.

The film cartridge container 400 includes two stop mechanisms 405 disposed at the bottom ends of the first and second lateral openings 4041, 4042, respectively, and the bearings 4052 are disposed at the film cartridge container at opposite ends thereof and are axially rotatable thereon. .

When the film cartridge case 400 is placed in the storage chamber and is in contact with the ground, the pivoting flapper 4051 is pivoted about the bearing 4052 to be turned from the arcuate projecting steps into a state where the two parallel end faces are horizontal, so that the openings 4041, 4042 are opened, and the film cartridge is pushed toward the control chamber 300 by the left stopper 501, and when taken out from the storage chamber, the return spring 4053 is returned from the compressed state by being lifted off the ground, and after the pivoting flapper 4051 is pivoted, the arcuate projecting steps again block the openings 4041, 4042, thereby serving as a stopper for the film cartridge.

Referring now to fig. 5, a schematic diagram of a brake system 500 of the present apparatus is shown, wherein fig. 5 is a top view of fig. 2.

The braking system 500 in the present device includes a left brake 501, a main brake 502, and a right brake 503.

Wherein the left brake 501 is disposed outside the unexposed film cartridge storage chamber for pushing the film cartridge in the unexposed film cartridge storage chamber 100 into the window 14 to be exposed, the left brake 501 comprises a rigid push handle 5011 and an electric device 5012 as shown in fig. 6, the rigid push handle 5011 is connected to the electric device 5012 and is axially perpendicular to the electric device 5012, but the pushing means includes, but is not limited to, rigid pushing, flexible pushing, belt pushing, magnetic pushing, etc.

Fig. 7(3) shows another preferred embodiment of the left brake, in which the rigid push handle 5011 is replaced with a conveyor 5013 to achieve the pushing effect of the film cartridge as well.

Please refer to fig. 7(2) for a schematic diagram of the right stopper 503.

The right brake 503 is disposed outside the exposed film cartridge storage chamber, and the film cartridges in the exposed film cartridge storage chamber 200 are arranged in close contact with the outlet of the film cartridge storage chamber 400 due to the action of the gravity pusher 407 in the film cartridge storage chamber 400.

The right actuator 503 is used to push the film cartridge in the exposed film cartridge storage chamber 200 out of the cartridge outlet to leave a space for the next exposed film cartridge to enter after the exposure is completed, and the right actuator 503 includes a rigid push handle 5031 and an electric device 5032 as shown in fig. 6, the rigid push handle 5031 is connected to the electric device 5032 and is axially perpendicular to the electric device 5032, but the pushing manner includes, but is not limited to, rigid pushing, flexible pushing, belt-conveying pushing, magnetic pushing, etc.

A main brake 502 is provided in the control chamber 300 in the middle of the apparatus of the present invention for supporting the film cartridge and pushing out to press against the weld.

Referring to fig. 6 and 7(1), the main brake 502 includes an electric device 5021, a rigid pushing handle 5022, a transmission assembly 5023 and a cloth piece assembly 5024. The electric device 5021 rotates, a motor shaft of the electric device drives the rigid pushing handle 5022 to rotate circularly, the transmission component 5023 connected with the rigid pushing handle 5022 is driven to do front and back telescopic motion, and the transmission component 5024 drives the cloth piece component to do front and back telescopic motion.

Returning to FIG. 5, the film assembly 5024 comprises a radiation shielding plate 50243, one side of which is fixed to the end of the telescopic shaft of the driving assembly 5023, and the other side of the radiation shielding plate 50243 is connected to a rotating mechanism 50242, so that when the electric device 5021 pushes the film cartridge out of and against the weld, the radiation shielding plate 50243 covers the window 14 to be exposed, preventing radiation from entering the inner cavity of the film cartridge changer and affecting the performance of the exposed and unexposed film.

The rotation mechanism 50242 comprises a rotation stage 502422 and a rotation shaft 502421, wherein the rotation mechanism in the rotation stage 502422 drives the rotation shaft 502421 to rotate, the rotation shaft 502421 and the support plate 50241 are fixed together, and the support plate 50241 is fixed with a magnetic attraction 50244, wherein the magnetic attraction 50244 is used for fixing the film cartridge 1000. The support plate 50241 is used to support the film cartridge, the rotation mechanism 50242 is used to photograph a circumferential weld perpendicular to the longitudinal weld, and the magnet 50244 corresponds to the magnet on the film cartridge to ensure that the film cartridge does not shift or fall off when pushed out and compressed against the weld.

Thus, the cloth piece assembly 5024 provides two motions according to different situations:

in the first case: when the longitudinal welding seam needs to be exposed, the main brake 502 directly pushes out the film cartridge and compresses the welding seam, namely, the cloth piece assembly 5024 only makes telescopic motion by the telescopic shaft of the transmission assembly 5023 to push out or retract the film cartridge to the window 14 to be exposed, and once the exposure is finished, the main brake 502 is directly retracted;

in the second case: when the circumferential weld joint needs to be exposed, the main brake 502 is pushed out and automatically rotates 90 degrees to compress the weld joint, that is, the cloth piece assembly 5024 can rotate the film cartridge 1000 through the rotating mechanism 50242, and after exposure is finished, the main brake automatically rotates 90 degrees to retract.

The following describes the implementation of the present invention in detail with reference to the above-described structure.

First, an unexposed film cartridge container is put in an unexposed film cartridge storage chamber 100, and a plurality of film cartridges are contained in the container; because the gravity pusher 407 in the housing 401 slides down the slots 4061, 4062 under the action of gravity to push the film cartridge to the proximal openings 4041, 4042, the control system activates the electrical device 5012 of the left brake 501 which drives the rigid push handle 5011 to push the cartridge toward the center of the housing 11, i.e., toward the control chamber 300;

once the unexposed film cartridge storage chamber 100 is ejected, the magnetic attraction on the film assembly 5024 will attract the film cartridge 1000, and the control system will determine and control the movement of the film assembly 5024 to perform the forward and backward stretching or the rotational movement according to the current weld condition, specifically referring to the above, during which the radiation shielding plate 50243 plays the role of isolating the film cartridge from the outside after it is fed into the window 14 to be exposed.

After the above-described detection is completed, the telescopic shaft of the carriage assembly 5023 is retracted, and the control system instructs the left brake 501 of the unexposed film cartridge storage compartment 100 to push the subsequent film cartridge in the direction of the control chamber 300, thereby pushing the previous exposed film cartridge from the lateral opening 4042 into the container of the exposed film cartridge storage compartment 200;

after entering the container, the electric device 5032 of the right brake 503 drives the rigid pushing handle 5031 to push the film cartridge 1000 in the direction of the handle 402, so as to leave a vacant position at the front end for the next container to enter.

FIG. 8 is a flow chart further illustrating the method steps for effecting film cartridge replacement using the apparatus of the present invention.

S501, firstly, the main brake 502 retracts into the window 14 to be exposed;

s502, the right brake 503 is instructed to push the exposed film cartridge to leave a vacant space and keep the film cartridge still;

s503, the left brake 501 is instructed to push out the unexposed negative film cassette into the window to be exposed;

s504, the right brake 503 is indicated to retract at the same time, so as to prevent the exposed film box from entering;

s505, finally, the main brake 502 is instructed to push the unexposed film cartridge to the welding seam to wait for exposure;

s506, when the circular welding seam is exposed, the main brake 502 is instructed to receive and send an automatic rotation 90-degree instruction.

Example 1

For the film cartridge replacing method, the invention is matched with a remote automatic transillumination system to be used for the ray detection effect of a certain Liquefied Natural Gas (LNG) storage tank, the LNG storage tank belongs to a normal-pressure low-temperature large storage tank, and is usually a flat-bottom double-wall cylinder, the inner cylinder is generally made of nickel-containing 9% alloy steel, can also be made of full aluminum and stainless steel films or prestressed concrete, and the outer wall is made of carbon steel or prestressed concrete. In the work progress, need carry out 100% ray detection to interior section of thick bamboo steel part, when adopting outer ray detection technology of penetrating of single-walled, carry on long-range automatic transillumination system and carry out wireless control ray film magazine and change, need not to set up the cat ladder, can avoid personnel to climb to the inner tube outside and remove the paster. When the longitudinal weld seam ray detection of the LNG storage tank belonging to the normal-pressure low-temperature large storage tank is carried out, the specific implementation steps are as follows:

(1) prefabricating an identification: the film with specific specification is cut in a darkroom, and the required mark is displayed on the film in advance by using a marker.

(2) Film boxing: the film with the mark is loaded into the film cartridge, the film cartridge containing box is opened, and the film cartridges are loaded in sequence.

(3) Exposure preparation: the film cartridge container is brought to the site, pushed into the unexposed film storage chamber, closed, and inspected for operational conditions of the exposed film storage chamber container, the control system, and the brake system.

After all normal conditions, a film cassette replacing instruction is sent through the remote control system, the film cassette replacing device sends an action instruction, the unexposed darkroom is pushed out to the position of the window to be exposed by the left brake, the film cassette is attracted by the main brake through magnetic force, the main brake pushes out and compresses the welding line to prepare exposure.

When the X-ray machine needs to be trained, the main brake carries out remote control exposure in an idle state, and the previous step is carried out after the exposure is finished.

(4) Exposing the film: after the film cartridge is arranged, a film exposure instruction is sent through a remote control system, the ray machine is started at high pressure for exposure, and the exposure time is executed according to the process requirements of the detected object.

(5) The equipment moves: after exposure is finished, the remote control system sends a moving instruction, and the ray machine, the accessories of the ray machine and the film cassette replacing device move to the center position of the next film position to prepare for next exposure.

(6) Film cartridge replacement: after the equipment moves in place, a film cassette replacing instruction is sent through a remote control system, a film cassette replacing device sends a logic action instruction, a main brake is indicated to retract into a window to be exposed, a right brake is indicated to push an exposed film cassette to reserve a vacancy and keep the exposed film cassette still, a left brake is indicated to push an unexposed film cassette out to enter the window to be exposed, and the right brake is indicated to retract at the same time to prevent an exposed film from entering; finally, the main brake is instructed to push the unexposed film cartridge to the weld seam to wait for exposure.

(7) Exposing the film: after the film cartridge is replaced, a film exposure instruction is sent through a remote control system, the ray machine is started at high pressure to carry out exposure, and the exposure time is executed according to the process requirements of the detected object.

And (5) repeating the steps (5) and (6) until the work of the work is suspended or finished.

(8) Film recovery: after the work of the work, the film cassette containing box is taken out from the exposed film storage chamber, and the film cassette containing box in the unexposed film storage chamber is taken out and placed into the exposed film storage chamber for the next exposure.

(9) Dark room treatment: the exposed film cartridge is taken out from the film cartridge container, and the film is opened and taken out for processing in a darkroom, thereby obtaining a target image.

Example 2

According to common knowledge, when radiographic inspection is carried out, the direction of the film is parallel to the direction of the welding line, when the circumferential welding line and the longitudinal welding line of the LNG storage tank belonging to the normal-pressure low-temperature large storage tank are subjected to radiographic inspection, the specific implementation steps and the method embodiment are slightly different, and the difference lies in the replacement of the film cassette in the step 6.

Step 6 is as follows: after the equipment moves in place, a film cassette replacing instruction is sent through a remote control system, a film cassette replacing device sends a logic action instruction, a main brake is indicated to retract into a window to be exposed at first, a right brake is indicated to push an exposed film cassette to reserve a vacancy and keep the vacancy still, a left brake is indicated to push an unexposed film cassette to enter the window to be exposed, a right brake is indicated to retract at the same time to prevent an exposed film from entering, and finally the main brake is indicated to push the unexposed film cassette to a welding line to wait for exposure.

In addition, the invention can also be matched with an automatic walking robot system to be used for the ray detection of other types of components, and is slightly different from the embodiment, but the invention is not essentially different.

The working principle of the device is that after exposure is completed, the wireless control system receives a film cassette replacing instruction, the brake system works to retract the exposed film cassette to a proper position, the brake system pushes the unexposed film cassette in the storage chamber to replace the exposed film cassette, the exposed film cassette enters the storage chamber, and the brake system pushes the unexposed film cassette to a welding seam to prepare for next exposure and so on. After all exposures are completed, the film cassette holding box is taken from the exposed film cassette storage chamber to the darkroom for darkroom processing.

The invention discloses a radio-controlled film cassette replacing method for radiographic inspection, which utilizes a radio control method and a film replacing device to realize automatic replacement of an exposed film cassette within a certain range without erecting an overhead upper platform and a lower platform and manually moving and replacing the film cassette back and forth, solves the problem of radiographic inspection of a large container, is beneficial to shortening the construction period and reduces the risk of overhead operation. By matching with other remote control detection systems, remote automatic control and automatic exposure can be realized, the detection efficiency is improved, the labor intensity is reduced, the radiation level is reduced, and the operation safety is guaranteed.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.

Claims (11)

1. A radiographic film cartridge exchange apparatus based on wireless control, characterized in that the apparatus comprises:

first and second storage chambers including first and second brake mechanisms;

the first film cartridge containing box and the second film cartridge containing box are respectively arranged in the first storage chamber and the second storage chamber and are used for containing a plurality of film cartridges, and each of the first film cartridge containing box and the second film cartridge containing box comprises a propelling mechanism;

wherein the pushing mechanism is used for pushing the film cartridge to move towards the lateral opening of the container box body and moving the film cartridge under the coordination of the first braking mechanism and the second braking mechanism;

a control chamber located between the first and second storage chambers and including a primary brake that controls forward and backward and/or rotational rotation of the film cartridge.

2. The radio-controlled-based radiographic film cassette exchange apparatus according to claim 1, wherein the film cassette housing box further comprises:

the stop mechanism is arranged at the bottom end of the lateral opening and comprises a rotating baffle, the rotating baffle comprises two arc-shaped protruding steps, an opening is formed in the center of the rotating baffle, the reset elastic mechanism is arranged in a bearing penetrating through the opening, and two ends of the bearing are respectively positioned on the film cartridge containing box and can axially rotate on the film cartridge containing box.

3. The radiographic film cassette changer based on wireless control according to claim 2,

the main brake comprises an electric device, a rigid pushing handle, a transmission assembly and a cloth piece assembly, wherein a motor shaft of the electric device drives the transmission assembly connected with the rigid pushing handle to drive the cloth piece assembly to move back and forth, the cloth piece assembly comprises a ray shielding plate, the ray shielding plate is connected with a rotating mechanism, and the rotating mechanism drives the film cassette to rotate through a supporting plate connected with the rotating mechanism.

4. The apparatus according to claim 3, wherein each of the first and second brake mechanisms comprises:

the pushing mechanism is driven by the electric device to push the film cartridge to move.

5. The radiographic film cassette changer based on wireless control according to claim 4,

the pushing mechanism comprises any one of a conveyor belt and a rigid pushing handle.

6. The radiographic film cassette changer based on wireless control according to claim 4,

the propelling mechanism comprises a gravity propeller and is arranged in symmetrical grooves which are arranged along two sides of the inner wall of the containing box and have certain slopes, and the lowest end of each groove is close to the stop mechanism.

7. The apparatus for changing a radiographic film cartridge based on wireless control according to claim 6, wherein the container box further comprises:

and the rolling device is arranged at the bottom of the first film cartridge containing box and the second film cartridge containing box and comprises any one of a ball, a rolling shaft and a roller.

8. The radiographic film cassette changer based on wireless control according to claim 7,

the supporting plate is provided with a magnet for fixing the film cartridge in an adsorbing manner.

9. The radio-controlled-based radiographic film cassette exchange device according to claim 8,

the first and second storage chambers each include an opening/closing door for access to and from the film cartridge container.

10. A changing method using the radio-control-based radiographic film cartridge changing apparatus according to any one of claims 1 to 9, characterized by comprising:

step one, placing an unexposed film cartridge containing box in the first storage chamber, wherein the unexposed film cartridge is pushed to a lateral opening by the pushing mechanism of the first braking mechanism, and an electric device of the first braking mechanism drives the pushing mechanism to push the film cartridge out of the unexposed film cartridge containing box to the direction of the control chamber;

secondly, the cloth piece assembly adsorbs the film cartridge, and the main brake judges and controls the front and back and/or rotation actions of the film cartridge to carry out longitudinal or circumferential welding;

thirdly, the first brake mechanism pushes the next film cartridge to the direction of the control chamber, and the previous film cartridge is pushed into the exposed film cartridge containing box of the second storage chamber through the lateral opening;

and step four, pushing the film cartridge entering the exposed film cartridge containing box by a second pushing mechanism along the direction opposite to the moving direction of the pushing mechanism so as to leave a vacant position for the next film cartridge.

11. The replacement method according to claim 10, wherein the second step further comprises:

when the longitudinal welding line needs to be exposed, the main brake pushes the film cartridge out of the window to be exposed and compresses the welding line, and the main brake is retracted after exposure is finished;

when the ring to be exposed is required to be welded, the main brake is pushed out to press the welding line, the rotating mechanism rotates the film cartridge by 90 degrees at the same time, and the main brake is retracted after exposure is finished.

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