Dotting equipment

Abstract

The utility model relates to the technical field of steam generator measurement, in particular to dotting equipment. The dotting equipment specifically comprises a base and a dotting assembly. The base is placed on a contact surface to be dotted; the dotting assembly comprises a dotting column, a transmission rod, a reset piece and a dotting cone, the dotting column drives the dotting cone through the transmission rod, and the reset piece is connected with the transmission rod in an abutting mode. During dotting, the dotting column moves downwards, the transmission rod compresses the reset piece, and the dotting cone extends out of the base. After dotting, the reset piece resets, the transmission rod drives the dotting column to move upwards, and the dotting cone retracts back to the base. The utility model has the advantage of automatic reset.

Description

Technical Field

[0001] The utility model relates to the technical field of steam generator measurement, in particular to a dotting device. Background Art

[0002] The tube bundle assembly of the steam generator of the main nuclear power equipment is the core heat exchange component of the steam generator. It is a physical barrier between the primary and secondary sides and plays an important role in the safe operation and function of the steam generator. The tube bundle assembly is mainly composed of tube sheets, heat exchange tubes, tube support plates and other parts. The tube sheet holes correspond to the tube holes of the tube support plates one by one. The heat exchange tubes pass through multiple tube support plates from the secondary side of the steam generator and enter the tube sheet holes to form the heat exchange structure of the steam generator. In order to ensure the heat exchange power of the steam generator, a certain heat exchange area and high thermal conductivity are required. Because a single heat exchange tube is often tens of meters long, and the tube wall thickness is only 1.01mm, it is a typical long flexible tube. In order to ensure the normal function of the heat exchange tube in the operation of the steam generator, so that it does not vibrate, shake, collide and rub against each other during the operation of the equipment, the secondary side of the heat transfer tube is mainly supported by a support structure composed of multiple tube support plates. According to the operating experience and structural characteristics of steam generators, heat exchange tubes are the main weak link of steam generators during in-service operation and are prone to functional failures, such as tube wall rupture, which can easily cause major safety accidents.

[0003] When the heat transfer tube passes through the tube support plate, the tube is supported by the supporting boss of the three-leaf plum blossom hole on the support plate. The gap between the tube and the tube hole of the support plate is 0.36mm (when one side is in contact), and the gap between the tube and the tube hole of the tube sheet is 0.25mm (when one side is in contact). The assembly gap of the heat transfer tube is very small, which requires that when the tube support plate is installed, its alignment with the corresponding tube sheet hole must be very high. Only by ensuring the high alignment between the tube hole of the tube support plate and the tube sheet hole can the heat transfer tube be smoothly passed through the 9 tube support plates and smoothly enter the tube sheet hole and the outer surface of the tube is intact. According to actual engineering experience, if the tube hole of the tube support plate is not well aligned with the tube sheet hole, it is easy to get stuck, the outer surface of the tube is scratched, and the tube is deformed when the tube is inserted, which seriously affects the safe and effective operation of the equipment. To obtain a high alignment of the tube support plate installation, the establishment of the alignment reference is particularly critical and determines the success or failure of the alignment.

[0004] Chinese patent CN211115569U discloses a mobile dotting device, which includes a dotting cone, a target ball seat and a fine-tuning base. The dotting cone can be a chisel with a pointed head as a cone; the target ball seat is a hollow cylinder with a base, and the size of the hollow part is set so that the pointed head and the body of the dotting cone fall into it; the fine-tuning base is provided with an outer frame and an inner frame, and the inner frame can move horizontally in the outer frame, and the size of the inner frame is such that the base of the target ball seat can be fixed on the inner frame; the outer frame is provided with a horizontal bubble, and the horizontal bubble is used to check and ensure whether the fine-tuning base remains horizontal. However, this solution does not have the function of automatic reset.

[0005] Therefore, a dotting device is provided to address the deficiencies in the prior art. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a dotting device, which can solve the problem of being unable to automatically reset.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A dotting device, comprising: a base and a dotting component;

[0009] The base is placed on the contact surface to be marked;

[0010] The dotting assembly comprises a dotting column, a transmission rod, a reset member and a dotting cone, wherein the dotting column drives the dotting cone through the transmission rod, and the reset member is abutted against the transmission rod;

[0011] During the dotting, the dotting column moves downward, the transmission rod compresses the reset member, and the dotting cone extends out of the base;

[0012] After the dotting, the reset member is reset, the transmission rod drives the dotting column to move upward, and the dotting cone retracts into the base.

[0013] As a further improvement of the technical solution of the utility model, it also includes a target ball, the base is provided with a target seat and a first magnet, the first magnet is embedded in the target seat, the target seat is adapted to the target ball, the first magnet is magnetically connected to the target ball, and the first magnet is located above the dotting cone and magnetically cooperates with the dotting cone.

[0014] As a further improvement of the technical solution of the utility model, the dotting cone is provided with a cone head, and the top of the cone head abuts against the contact surface;

[0015] The striking column is provided with a first contact surface, the transmission rod is provided with a second contact surface connected to the first contact surface, the transmission rod is provided with a third contact surface at one end away from the second contact surface, and the striking cone is provided with a fourth contact surface connected to the third contact surface.

[0016] As a further improvement of the technical solution of the utility model, the striking column is further provided with a striking portion, and the striking portion is far away from the first contact surface.

[0017] As a further improvement of the technical solution of the utility model, it also includes a fixed column, which is fixedly connected to the base, and the dot column penetrates through the fixed column and is inserted into the base to be connected with the transmission rod.

[0018] As a further improvement of the technical solution of the utility model, it also includes a handle, which is fixedly connected to the fixing column through a locking nut.

[0019] As a further improvement of the technical solution of the utility model, the transmission rod is located in the base, and the transmission rod moves in the base along its axial direction.

[0020] As a further improvement of the technical solution of the utility model, at least one second magnet is embedded in the bottom of the base.

[0021] As a further improvement of the technical solution of the utility model, the center of the target ball is located on the axis of the spotting cone.

[0022] As a further improvement of the technical solution of the utility model, the first contact surface, the second contact surface, the third contact surface and the fourth contact surface are all inclined at 45°.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] In the dotting device of the utility model, when dotting, a hammer is used to hit the dotting column, the dotting column moves downward, the dotting column drives the transmission rod to compress the reset part, and the dotting cone extends out of the base to dot the contact surface; after the dotting is completed, the reset part is reset, the reset part presses against the transmission rod, the transmission rod drives the dotting column to move upward, and the dotting cone retracts to the base. The dotting device has the characteristic of automatic reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the dotting device of the utility model;

[0027] Figure 2 It is a perspective view of the three-dimensional structure of the dotting device of the utility model.

[0028] In the figure:

[0029] 1. base; 11. target base; 12. first magnet; 13. second magnet;

[0030] 2. Dotting assembly; 21. Dotting column; 22. Transmission rod; 23. Dotting cone; 24. Reset member;

[0031] 3. Target ball; 4. Fixed column; 5. Handle. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments in this application can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0033] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings.

[0034] Reference Figure 1 to Figure 2 , a dotting device, comprising a base 1 and a dotting assembly 2;

[0035] In one embodiment, the base 1 is placed on the contact surface to be dotted; the dot-dotting assembly 2 includes a dot-dotting column 21, a transmission rod 22, a reset member 24 and a dot-dotting cone 23. The dot-dotting column 21 drives the dot-dotting cone 23 through the transmission rod 22, and the reset member 24 is connected to the transmission rod 22; when dot-dotting, the dot-dotting column 21 moves downward, the transmission rod 22 compresses the reset member 24, and the dot-dotting cone 23 extends out of the base 1; after dot-dotting, the reset member 24 is reset, the transmission rod 22 drives the dot-dotting column 21 to move upward, and the dot-dotting cone 23 retracts into the base 1. The transmission rod 22 is located in the base 1, and the transmission rod 22 moves in the base 1 along its axis direction.

[0036] When marking, the marking column 21 is struck with a hammer, the marking column 21 moves downward, the marking column 21 drives the transmission rod 22 to compress the reset member 24, and the marking cone 23 extends out of the base 1 to mark the contact surface; after the marking is completed, the reset member 24 is reset, the reset member 24 presses against the transmission rod 22, the transmission rod 22 drives the marking column 21 to move upward, and the marking cone 23 retracts to the base. The marking device has the characteristic of automatic reset.

[0037] In one embodiment, the reset member 24 is connected to the driving rod 22. After the marking of the dotting tool is ensured, the dotting assembly 2 is reset. During dotting, the dotting column 21 is struck with a hammer, and the dotting column 21 moves downward. The dotting column 21 drives the driving rod 22 to compress the reset member 24, and the cone head extends out of the base 1, thereby forming a marking point on the contact surface; after dotting, the reset member 24 is reset to drive the dotting column 21 and the dotting cone 23 to reset through the driving rod 22. Preferably, the dotting cone 23 is also subjected to the magnetic attraction force of the first magnet 12 during the resetting process, and at the same time, the dotting cone 23 is prevented from falling.

[0038] In one embodiment, the dotting device further includes a target ball 3, a target seat 11 and a first magnet 12 are provided in the base 1, the first magnet 12 is embedded in the target seat 11, the target seat 11 is adapted to the target ball 3, and the first magnet 12 is magnetically connected to the target ball 3. The first magnet 12 is located above the dotting cone 23 and is magnetically matched with the dotting cone 23. The first magnet 12 prevents the target ball 3 from shaking and falling during operation. Preferably, the target ball 3 is matched with a laser tracker, and the dotting accuracy and efficiency are high.

[0039] In one embodiment, the dotting column 21 is provided with a first contact surface, the transmission rod 22 is provided with a second contact surface connected to the first contact surface, the end of the transmission rod 22 away from the second contact surface is provided with a third contact surface, and the dotting cone 23 is provided with a fourth contact surface connected to the third contact surface. The first contact surface, the second contact surface, the third contact surface and the fourth contact surface are all inclined at 45 degrees, and force transmission is formed through surface contact.

[0040] In one embodiment, the dotting device further includes a fixed column 4, which is fixedly connected to the base 1, and a dotting column 21 penetrates the fixed column 4 and is inserted into the base 1 and connected to the transmission rod 22. The fixed column 4 is vertically arranged with the base 1, and the dotting column 21 moves up and down along the fixed column 4. Through the cooperation of the first contact surface and the second contact surface, the dotting column 21 drives the transmission rod 22 to compress the reset member 24 and move along its length direction. The dotting column 21 is located at the connection between the transmission rod 22 and the reset member 24. Through the cooperation of the third contact surface and the fourth contact surface, the transmission rod 22 drives the dotting column 21 to move downward.

[0041] In one embodiment, three second magnets 13 are embedded at the bottom of the base 1 . The second magnets 13 are magnetically attracted to the contact surface to prevent the dotting base 1 from shaking or falling during operation. The three second magnets 13 are arranged around the dotting cone 23 .

[0042] In one embodiment, the dotting device also includes a handle 5, which is fixedly connected to the fixing column 4 through a locking nut. The handle 5 is mainly used to facilitate the carrying of the dotting tool and protect the target ball 3. The handle 5 is C-shaped, and the target ball 3 is located below the handle 5.

[0043] For other contents of the dotting device described in the present invention, please refer to the prior art and will not be described in detail here.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A dotting device, characterized in that: include: Base and dotting assembly; The base is placed on the contact surface to be marked; The dotting assembly comprises a dotting column, a transmission rod, a reset piece and a dotting cone, wherein the dotting column drives the dotting cone through the transmission rod, and the reset piece is abutted against the transmission rod; During the dotting, the dotting column moves downward, the transmission rod compresses the reset member, and the dotting cone extends out of the base; After the dotting, the reset member is reset, the transmission rod drives the dotting column to move upward, and the dotting cone retracts into the base.

2. A dotting device according to claim 1, characterized in that: It also includes a target ball. The base is provided with a target seat and a first magnet. The first magnet is embedded in the target seat. The target seat is adapted to the target ball. The first magnet is magnetically connected to the target ball. The first magnet is located above the dotting cone and magnetically cooperates with the dotting cone.

3. A dotting device according to claim 1, characterized in that: The dotting cone is provided with a cone head, and the top of the cone head abuts against the contact surface; The striking column is provided with a first contact surface, the transmission rod is provided with a second contact surface connected to the first contact surface, the transmission rod is provided with a third contact surface at one end away from the second contact surface, and the striking cone is provided with a fourth contact surface connected to the third contact surface.

4. A dotting device according to claim 3, characterized in that: The striking column is further provided with a striking portion, and the striking portion is away from the first contact surface.

5. A dotting device according to claim 1, characterized in that: It also includes a fixing column, which is fixedly connected to the base. The dot-marking column penetrates through the fixing column and is inserted into the base to be connected to the transmission rod.

6. A dotting device according to claim 5, characterized in that: It also includes a handle, which is fixedly connected to the fixing column through a locking nut.

7. The dotting device according to claim 1, characterized in that: The transmission rod is located in the base, and the transmission rod moves in the base along the axial direction thereof.

8. The dotting device according to claim 1, characterized in that: At least one second magnet is also embedded in the bottom of the base.

9. The dotting device according to claim 2, characterized in that: The center of the target ball is located on the axis of the spotting cone.

10. The dotting device according to claim 3, characterized in that: The first contact surface, the second contact surface, the third contact surface and the fourth contact surface are all inclined at 45 degrees.

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