Rapid installation structure of probe guiding device

Abstract

The utility model discloses a probe guide device rapid installation structure, which is applied to connection of a probe guide device and a tube plate positioning robot, and comprises a first suction device, a second suction device, a third suction device, a fourth suction device and a fourth suction device, the second suction device is provided with a second adsorption surface, and a second electric connector is arranged on the second adsorption surface; at least one of the first pull-in device and the second pull-in device is connected with the pull-in air pipe, and a pull-in electromagnetic valve is arranged on the pull-in air pipe; when the first adsorption face is aligned to and attached to the second adsorption face, the first electric connector and the second electric connector are electrically connected, the suction electromagnetic valve is connected with a power source, and the first suction device and the second suction device are sucked. According to the quick mounting structure of the probe guide device, the staying time of equipment mounting personnel at the manhole of the steam generator is remarkably shortened, the labor intensity of the personnel is reduced, and the exposure dose of the equipment mounting personnel is reduced.

Description

Technical Field

[0001] The present application relates to the field of nuclear power plant steam generator detection, and in particular to a quick installation structure of a probe guide device. Background Art

[0002] Steam generators are a common facility in nuclear power plants, and inspections are frequently required to ensure smooth operation. During eddy current inspections of steam generator heat transfer tubes, a tubesheet positioning robot, installed on the inner tubesheet, crawls across the tubesheet, positioning a probe guide to the tube hole to be inspected. The probe guide guides the probe in and out of the heat transfer tube. A probe pusher, located outside the steam generator, pushes or pulls the eddy current probe into or out of the tube to perform the inspection. To minimize personnel exposure during eddy current inspections, the equipment operation area is typically located in a container outside the nuclear island. The inspection equipment inside the nuclear island is connected to the equipment control computer in the container via optical fiber. Equipment operators operate the equipment remotely, leaving only a small number of equipment installers inside the nuclear island to perform some installation operations. Equipment operators in the container outside the nuclear island communicate with equipment installers inside the nuclear island to confirm the required operations.

[0003] Before conducting an inspection, the probe guide must be installed on the tubesheet positioning robot. Only when the two are combined can the inspection be carried out properly. Currently, the tubesheet positioning robot and the probe guide are connected via a pneumatic closeer. The installation process for the probe guide is as follows: First, the equipment installer in the steam generator room installs the tubesheet positioning robot onto the tubesheet through the steam generator's manhole and adjusts the robot to the appropriate position. Then, using a tool such as a long pole, the installer inserts the probe guide into the steam generator through the steam generator's manhole and adjusts its position and posture until the closeer on the probe guide fits tightly with the closeer on the tubesheet positioning robot. Finally, the equipment operator outside the nuclear island is notified via a headset to remotely operate the closeer, completing the probe guide installation. However, the existing installation mode requires equipment installers to notify equipment operators outside the nuclear island through voice intercom to perform software operations before the installation of the probe guide device can be completed. This requires equipment installers to stay at the manhole of the steam generator for a long time, which increases the exposure dose of equipment installers in the case of in-service inspection. In addition, while waiting for the equipment operator to perform software operations, the probe guide device plus the long rod used for installation are heavy. If the equipment installers fail to maintain the posture of the guide device well, it may cause the attractor of the probe guide device and the attractor of the tube sheet crawling robot to change from a tightly fitted state to a separated state. Executing software operations at this time will cause the attraction failure, and the equipment alignment, call, and software operation processes need to be repeated. Sometimes the process will be repeated many times, which will also cause the equipment installers to stay at the manhole of the steam generator for a long time. In the case of in-service inspection, the exposure dose of the equipment installers will be significantly increased.

[0004] Therefore, it is necessary to develop a probe guide device structure that can achieve rapid installation. Utility Model Content

[0005] In order to solve one of the technical problems existing in the prior art, the present application provides a quick installation structure of a probe guide device, which shortens the time for installing the probe guide device on the tube sheet positioning robot and reduces the radiation dose to personnel.

[0006] According to some embodiments of the present application, a quick installation structure of a probe guide device is provided, which is applied to the connection between the probe guide device and a tube sheet positioning robot. The quick installation structure of the probe guide device includes: a first attractor, which is arranged on the probe guide device, the first attractor has a first adsorption surface, and a first electrical connector is provided on the first adsorption surface; a second attractor, which is arranged on the tube sheet positioning robot, the second attractor has a second adsorption surface that matches the first adsorption surface, and a second electrical connector is provided on the second adsorption surface. When the first adsorption surface is aligned with the second adsorption surface and adheres to the second adsorption surface, the first electrical connector and the second electrical connector are electrically connected; a suction air pipe, at least one of the first attractor and the second attractor is connected to the suction air pipe, and a suction solenoid valve is provided on the suction air pipe; wherein, after the first electrical connector and the second electrical connector are electrically connected, the suction solenoid valve is connected to a power supply, and the suction solenoid valve opens to conduct the suction air pipe and attract the first attractor and the second attractor.

[0007] In some embodiments, the probe guide device quick installation structure includes a relay, which has a signal input end, a power input end, a first output end, and a second output end. The relay controls the power input end to be connected to one of the first output end or the second output end according to the signal input from the signal input end; the first output end is connected to the suction solenoid valve, and at least one of the first electrical connector and the second electrical connector is arranged between the first output end and the suction solenoid valve. When the first electrical connector and the second electrical connector are not connected, the first output end and the suction solenoid valve are in a non-conductive state. When the first electrical connector and the second electrical connector are electrically connected, the first output end and the suction solenoid valve are in a conductive state.

[0008] In some embodiments, the quick installation structure of the probe guide device also includes a loosening air pipe, at least one of the first attractor and the second attractor is connected to the loosening air pipe, and a loosening solenoid valve is provided on the loosening air pipe; the second output end of the relay is connected to the loosening solenoid valve, and after the loosening solenoid valve is connected to the power supply, the loosening solenoid valve opens to make the loosening air pipe conductive, and the first attractor and the second attractor are released from the attracted state.

[0009] In some embodiments, when the signal input terminal inputs a low level, the power input terminal is connected to the first output terminal; when the signal input terminal inputs a high level, the power input terminal is connected to the second output terminal.

[0010] In some embodiments, a first contact is provided on the first electrical connector, and a second contact is provided on the second electrical connector; one of the first contact and the second contact is provided as a protruding structure, and the other of the first contact and the second contact is provided as a groove structure adapted to the protruding structure.

[0011] In some embodiments, the protruding structure is a spring pin.

[0012] In some embodiments, two first contacts are spaced apart on the first electrical connector, and two second contacts are spaced apart on the second electrical connector; the distance between the first contacts is the same as the distance between the second contacts.

[0013] In some embodiments, the relay, the pull-in solenoid valve and the release solenoid valve are arranged on the tube sheet positioning robot; wherein, the first contacts are short-circuited by wires, one of the second contacts is connected to the first output end, and the other of the second contacts is connected to the pull-in solenoid valve.

[0014] In some embodiments, the probe guide device quick installation structure further includes an electrical control cabinet, the electrical control cabinet is arranged outside the steam generator, and the relay, the pull-in solenoid valve and the release solenoid valve are arranged inside the electrical control cabinet.

[0015] In some embodiments, one of the first contacts is connected to the first output end, another of the first contacts is connected to the pull-in solenoid valve, and the second contacts are short-circuited by a wire.

[0016] The beneficial effect of the present application is that: using the quick installation structure of the probe guide device of the present application, when the equipment installer adjusts the first attractor of the probe guide device and the second attractor of the tube plate positioning robot to align the first adsorption surface with the second adsorption surface and fit them together, the attraction solenoid valve is actuated to connect the attraction air pipe, thereby attracting the first attractor and the second attractor, automatically achieving rapid attraction of the attractor, and the equipment operator is no longer required to perform software operations. As long as the first attractor and the second attractor are tightly fitted once, the probe guide device can be reliably installed, avoiding repeated installation due to communication and compensation between the equipment installer and the equipment operator, significantly shortening the equipment installer's stay time at the manhole of the steam generator, reducing the labor intensity of the personnel, and when applied to in-service inspection of steam generators in nuclear power plants, it can also reduce the exposure dose of the equipment installer.

[0017] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the present application will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0019] Figure 1 This is a circuit schematic diagram of the quick installation structure of the probe guide device provided in this application;

[0020] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0021] Description of labels:

[0022] First attractor 100, first attraction surface 110, first contact 120, second attractor 200, second attraction surface 210, second contact 220, relay 300, signal input terminal 301, power input terminal 302, first output terminal 303, second output terminal 304, attracting solenoid valve 400, releasing solenoid valve 500. DETAILED DESCRIPTION

[0023] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0024] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0025] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0026] The following is combined with Figure 1 、 Figure 2 The provided embodiments further illustrate the quick installation structure of the probe guide device proposed in this application.

[0027] like Figure 1 、 Figure 2 As shown, in some embodiments, the present application provides a probe guide device quick installation structure for use in connecting a probe guide device to a tube sheet positioning robot, comprising a first attractor 100, a second attractor 200, an attracting air pipe, and an attracting solenoid valve 400. The first attractor 100 is disposed on the probe guide device, and the first attractor 100 has a first suction surface 110, on which a first electrical connector is disposed. The second attractor 200 is disposed on the tube sheet positioning robot, and the second attractor 200 has a second suction surface 210 that cooperates with the first suction surface 110, on which a second electrical connector is disposed. At least one of the first attractor 100 and the second attractor 200 is connected to the attracting air pipe, and the attracting solenoid valve 400 is disposed on the attracting air pipe to control its operation. When the first adsorption surface 110 is aligned with the second adsorption surface 210 and attached, the first electrical connector and the second electrical connector are electrically connected, so that the attraction solenoid valve 400 is connected to the power supply, and the attraction solenoid valve 400 opens to connect the attraction air pipe to attract the first attractor 100 and the second attractor 200.

[0028] In some embodiments, the probe guide device quick installation structure further includes a relay 300 having a signal input terminal 301, a power input terminal 302, a first output terminal 303, and a second output terminal 304. The relay 300 controls the connection between the power input terminal 302 and either the first output terminal 303 or the second output terminal 304 based on a signal input from the signal input terminal 301. The first output terminal 303 is connected to the solenoid valve 400, and at least one of the first electrical connector and the second electrical connector is disposed between the first output terminal 303 and the solenoid valve 400. When the first electrical connector and the second electrical connector are not connected, there is no electrical conduction between the first output terminal 303 and the solenoid valve 400. When the first electrical connector and the second electrical connector are electrically connected, there is electrical conduction between the first output terminal 303 and the solenoid valve 400. Under the control of the signal received by the signal input terminal 301, when the power input terminal 302 is connected to the first output terminal 303 and the first electrical connector is electrically connected to the second electrical connector, the pull-in solenoid valve 400 is connected to the power supply and begins to operate. When the power input terminal 302 is connected to the second output terminal 304, the pull-in solenoid valve 400 loses power and stops operating. By providing the relay 300 in the quick installation structure of the probe guide device of the present application, the connection between the power supply and the pull-in solenoid valve 400 can be better controlled.

[0029] In some embodiments, the probe guide device quick installation structure further includes a release air pipe, to which at least one of the first and second closers 100 and 200 is connected, and a release solenoid valve 500 is provided on the release air pipe. The second output terminal 304 of the relay 300 is connected to the release solenoid valve 500. Under the control of the signal received by the signal input terminal 301, when the power input terminal 302 is connected to the second output terminal 304, the release solenoid valve 500 is connected to the power supply, and the release solenoid valve 500 opens to conduct the release air pipe, and the first and second closers 100 and 200 are released from the closed state. By providing the release air pipe and the release solenoid valve 500 in the probe guide device quick installation structure of the present application, the first and second closers 100 and 200 can be actively released from the closed state, facilitating the rapid removal of the probe guide device from the tube sheet positioning robot for maintenance.

[0030] In some embodiments, the relay 300 can be configured such that when a low level is input to the signal input terminal 301, the power input terminal 302 is connected to the first output terminal 303, and when a high level is input to the signal input terminal 301, the power input terminal 302 is connected to the second output terminal 304. Furthermore, it will be readily understood that in other embodiments, the relay 300 can also be configured such that when a high level is input to the signal input terminal 301, the power input terminal 302 is connected to the first output terminal 303, and when a low level is input to the signal input terminal 301, the power input terminal 302 is connected to the second output terminal 304.

[0031] In some embodiments, a first contact 120 is provided on the first electrical connector, and a second contact 220 is provided on the second electrical connector; one of the first contact 120 and the second contact 220 is provided as a protruding structure, and the other of the first contact 120 and the second contact 220 is provided as a groove structure that matches the protruding structure. It is easy to understand that by providing the first contact 120 and the second contact 220 with a protruding structure and a groove structure respectively, the connection between the first contact 120 and the second contact 220 can be made more stable and reliable through the cooperation between the protruding structure and the groove structure. Figure 2 As shown, in some embodiments, the first contact 120 is configured as a groove structure, while the second contact 220 is configured as a protrusion structure. It should be noted that in other embodiments, the first contact 120 can also be configured as a protrusion structure, while the second contact 220 can be configured as a groove structure.

[0032] In some embodiments, the protruding structure is a spring-loaded pin. The spring-loaded pin has a certain degree of elasticity. When the first adsorption surface 110 is just attached to the second adsorption surface 210 and before the first contact 120 and the second contact 220 are aligned, the spring-loaded pin in contact with the first adsorption surface 110 or the second adsorption surface 210 retracts. When the first attracter 100 is moved to align the first contact 120 and the second contact 220, the spring-loaded pin extends and enters the groove structure, forming a reliable connection between the first contact 120 and the second contact 220.

[0033] In some embodiments, two first contacts 120 are spaced apart on the first electrical connector, and two second contacts 220 are spaced apart on the second electrical connector. The distance between the first contacts 120 is the same as the distance between the second contacts 220. Providing two first contacts 120 and two second contacts 220 allows for better positioning and improves the reliability of the connection between the first and second electrical connectors.

[0034] In some embodiments, the relay 300, the closing solenoid valve 400, and the releasing solenoid valve 500 are mounted on the tubesheet positioning robot. The two first contacts 120 are short-circuited by a wire; one of the second contacts 220 is connected to the first output terminal 303, and the other of the second contacts 220 is connected to the closing solenoid valve 400. It is readily understood that by placing the relay 300, the closing solenoid valve 400, and the releasing solenoid valve 500 on the tubesheet positioning robot through the above structure, the number of cables required for routing can be reduced, simplifying the overall inspection system. Furthermore, both the closing and releasing air pipes are mounted on the second closer 200, reducing the weight of the probe guide assembly and making it easier for equipment installers to manipulate the probe guide assembly using a long pole to change its position.

[0035] In some embodiments, the probe guide device quick installation structure also includes an electrical control cabinet, which is arranged outside the steam generator, and the relay 300, the attraction solenoid valve 400 and the release solenoid valve 500 are arranged inside the electrical control cabinet, and the second attractor 200 is connected to the inside of the electrical control cabinet through a lead-out cable.

[0036] In some embodiments, one of the first contacts 120 is connected to the first output end 303 , another of the first contacts 120 is connected to the attracted solenoid valve 400 , and the second contacts 220 are short-circuited by wires.

[0037] like Figure 1 and Figure 2 As shown, some embodiments of the present application are used as follows: before installing the probe guide device, the signal input terminal 301 is set to a low level. At this time, the relay 300 does not operate, and the power input terminal 302 is connected to the first output terminal 303; first, the tube sheet positioning robot is installed to the tube sheet through the manhole of the steam generator, and after the tube sheet positioning robot is adjusted to a suitable position, a long rod or other tool is used to send the probe guide device into the steam generator through the manhole of the steam generator, and then the position and posture of the probe guide device are adjusted so that the first adsorption surface 110 of the first attractor 100 is aligned with the second adsorption surface 210 of the second attractor 200 and fits together, and the first electrical connector and the second connector are connected. The two electrical connectors are electrically connected, the suction solenoid valve 400 is energized, and the suction solenoid valve 400 is actuated to open the suction air pipe, thereby closing the first sucker 100 and the second sucker 200, and automatically realizing the rapid suction of the sucker; when it is necessary to perform the removal of the probe guide device, the signal input terminal 301 is set to a high level, the relay 300 is actuated, the power input terminal 302 is connected to the second output terminal 304, the suction solenoid valve 400 loses power and the release solenoid valve 500 is energized, the suction air pipe is closed, and the release air pipe is opened, and the first sucker 100 and the second sucker 200 are released from the suction state. At this time, the probe guide device can be easily removed from the tube plate positioning robot.

[0038] With the probe guide device quick mounting structure of the present application, when the equipment installer installs the probe guide device on the tube plate positioning robot, the equipment operator no longer needs to perform software operation, and reliable installation of the probe guide device can be achieved as long as the first suction device 100 and the second suction device 200 are closely attached once, avoiding repeated installation due to communication compensation between the equipment installer and the equipment operator, significantly shortening the residence time of the equipment installer at the manhole of the steam generator, reducing the labor intensity of the personnel, and when applied to in-service inspection of the steam generator of a nuclear power plant, the radiation dose of the equipment installer can also be reduced.

[0039] It can be understood that the above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application; it should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can also be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A probe guide device quick installation structure, used in the connection between the probe guide device and the tube sheet positioning robot, characterized in that: The probe guide device quick installation structure includes: a first attractor, disposed on the probe guide device, the first attractor having a first adsorption surface, and a first electrical connector disposed on the first adsorption surface; a second attractor, disposed on the tube-sheet positioning robot, the second attractor having a second adsorption surface cooperating with the first adsorption surface, the second adsorption surface being provided with a second electrical connector, and when the first adsorption surface is aligned with and in contact with the second adsorption surface, the first electrical connector and the second electrical connector are electrically connected; A suction and closing air pipe, to which at least one of the first suction device and the second suction device is connected, and a suction and closing air pipe is provided with a suction and closing solenoid valve; After the first electrical connector is electrically connected to the second electrical connector, the suction solenoid valve is connected to a power source, and the suction solenoid valve opens to connect the suction air pipe and suction the first and second absorbers.

2. The probe guide device quick installation structure according to claim 1, characterized in that: The probe guide device quick installation structure includes a relay, the relay having a signal input terminal, a power input terminal, a first output terminal, and a second output terminal, and the relay controls the power input terminal to be connected to one of the first output terminal or the second output terminal according to a signal input from the signal input terminal; The first output end is connected to the suction solenoid valve, and at least one of the first electrical connector and the second electrical connector is arranged between the first output end and the suction solenoid valve. When the first electrical connector and the second electrical connector are not connected, the first output end and the suction solenoid valve are in a non-conductive state. When the first electrical connector and the second electrical connector are electrically connected, the first output end and the suction solenoid valve are in a conductive state.

3. The probe guide device quick installation structure according to claim 2, characterized in that: The probe guide device quick installation structure further includes a loosening air pipe, at least one of the first sucker and the second sucker is connected to the loosening air pipe, and the loosening air pipe is provided with a loosening solenoid valve; The second output end of the relay is connected to the release solenoid valve. After the release solenoid valve is connected to the power supply, the release solenoid valve opens to connect the release air pipe, and the first attractor and the second attractor are released from the attracted state.

4. The probe guide device quick installation structure according to claim 2 or 3, characterized in that: When the signal input terminal inputs a low level, the power input terminal is connected to the first output terminal; When a high level is input to the signal input terminal, the power input terminal is connected to the second output terminal.

5. The probe guide device quick installation structure according to claim 3, characterized in that: The first electrical connector is provided with a first contact, and the second electrical connector is provided with a second contact; One of the first contact and the second contact is configured as a protruding structure, and the other of the first contact and the second contact is configured as a recessed structure adapted to the protruding structure.

6. The probe guide device quick installation structure according to claim 5, characterized in that: The protruding structure is a spring ejector.

7. The probe guide device quick installation structure according to claim 5, characterized in that: The first electrical connector is provided with two first contacts at intervals, and the second electrical connector is provided with two second contacts at intervals; The distance between the first contacts is the same as the distance between the second contacts.

8. The probe guide device quick installation structure according to claim 7, characterized in that: The relay, the pull-in solenoid valve and the release solenoid valve are arranged on the tube sheet positioning robot; wherein, The first contacts are short-circuited by a wire, one of the second contacts is connected to the first output end, and the other of the second contacts is connected to the pull-in solenoid valve.

9. The probe guide device quick installation structure according to claim 7, characterized in that: The probe guide device quick installation structure further includes an electrical control cabinet, which is arranged outside the steam generator, and the relay, the pull-in solenoid valve, and the release solenoid valve are arranged inside the electrical control cabinet.

10. The probe guide device quick installation structure according to claim 7 or 9, characterized in that: One of the first contacts is connected to the first output end, another of the first contacts is connected to the pull-in solenoid valve, and the second contacts are short-circuited by a wire.

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