Thread repairing device

Abstract

The invention discloses a thread repairing device, and relates to the field of thread repairing, the thread repairing device comprises a first block body and a second block body, one end of the first block body is rotatably connected with one end of the second block body, the other end of the first block body is detachably connected with the other end of the second block body, the first block body is provided with a first semicircular groove, and the second block body is provided with a second semicircular groove. A first semicircular groove is formed in the first block body, a second semicircular groove is formed in the second block body, the first semicircular groove is matched with the second semicircular groove, and first repairing threads are arranged on the inner side wall of the first semicircular groove and the inner side wall of the second semicircular groove; the problems that the maintenance period is prolonged and potential safety hazards are left due to the fact that thermocouple threads are damaged during power plant maintenance are solved.

Description

Technical Field

[0001] The invention relates to the field of thread repair, and in particular to a thread repair device. Background Art

[0002] During the overhaul of power plant units, it is necessary to disconnect and reconnect the thermocouple joints for measuring the core temperature. Due to the location and environment of the thermocouple joints, there is a risk of damage to the threads of the thermocouple joints during removal and reinstallation. If the entire thermocouple is replaced due to damage to the threads of the thermocouple joints, it will have a great impact on the overhaul period and will also increase the maintenance costs of the power plant. If the threads of the thermocouple joints are damaged and not repaired, the overall measurement performance of the thermocouple after the connection is restored will leave great equipment safety hazards, and even human safety hazards.

[0003] In the prior art, thread repair of thermocouple joints in nuclear power plants is mostly achieved by traditional thread repair tools. However, the core thermocouple joints are relatively long, and traditional thread repair tools are inconvenient for repairing external threads. Tools with longer taps are required to complete the work. The space near the core is narrow, and large-sized taps are inconvenient to carry and operate. Summary of the invention

[0004] The present invention provides a thread repair device to solve the problems of extended maintenance period and potential safety hazards caused by thermocouple thread damage during power plant maintenance, as well as the inconvenience of carrying and operating repair tools in existing repair methods.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A thread repair device comprises a first block and a second block, wherein one end of the first block is rotatably connected to one end of the second block, and the other end of the first block is detachably connected to the other end of the second block, a first semicircular groove is provided on the first block, and a second semicircular groove is provided on the second block, the first semicircular groove and the second semicircular groove match each other, and a first repair thread is provided on the inner side walls of the first semicircular groove and the second semicircular groove.

[0007] The present invention clamps the damaged threaded rod by rotating the connected first block and the second block, matches the thread on the threaded rod with the first repair thread in the first semicircular groove and the second semicircular groove, and then rotates the thread repair device or the damaged threaded rod to repair the thread on the damaged threaded rod so that it can be smoothly screwed into the corresponding position of the equipment, thereby achieving immediate repair of the damaged thread and avoiding a major impact on the construction period, ensuring the integrity of the equipment, and avoiding potential safety hazards. When repairing the external thread, the device can first determine the position of the damaged thread and then directly install the device near the damaged thread, thereby speeding up the repair speed. In addition, the device has a simple structure and can be reduced in size for easy operation and carrying.

[0008] Furthermore, an extension column is provided at one end of the first block and the second block being detachably connected, and a through hole is provided on the extension column for accommodating one end of the second block. A threaded hole connected to the through hole is provided at one end of the extension column away from the first block, and a screw is provided in the threaded hole.

[0009] By embedding one end of the second block into the through hole and tightening the screw to fix the first block and the second block, and then loosening the screw and rotating the second block to open the first semicircular groove and the second semicircular groove, the damaged screw can be easily embedded and clamped, thereby facilitating the repair of the damaged screw.

[0010] Furthermore, the length of the screw is greater than or equal to the length of the through hole.

[0011] Furthermore, a butterfly nut for gripping is provided at one end of the screw rod away from the extension column, which is convenient for hand gripping, enhances the firmness of manually tightening the screw rod, and does not require the assistance of additional tools, making operation and use more convenient.

[0012] Furthermore, a plurality of first notches are provided on the inner side walls of the first semicircular groove and the second semicircular groove, and the first notches cut the first repair thread into a plurality of thread segments.

[0013] Since metal debris will be generated when repairing the thread, in order to prevent the metal debris from entering the intact thread and damaging it, a first notch is set so that the debris generated when repairing the thread can leave the first notch as soon as possible, ensuring that the thread will not be damaged again during repair.

[0014] Furthermore, a handle is provided on one side of the first block. During the repair operation, the repair device needs to be rotated, so the handle can be convenient for the operator to grasp.

[0015] Furthermore, the surface of the handle is provided with anti-skid patterns to increase the friction of the handle and prevent the operator from slipping when gripping the handle for operation.

[0016] Furthermore, a hanging ring is provided on one side of the first block, and a rope loop is set on the hanging ring, so that the thread repair device can be hung around the neck or other places and carried around, so as to achieve the purpose of taking it at any time.

[0017] Furthermore, a prism hole is provided on the first block, an extension rod is detachably connected to the prism hole, and a second repair thread is provided on the extension rod.

[0018] The extension rod and the second repair thread are used to repair the damaged internal thread, and the prismatic hole limits the extension rod circumferentially to prevent relative rotation between the device and the extension rod when the rotating device repairs the damaged internal thread. At the same time, extension rods of different sizes can be installed in the prismatic hole, which increases the adaptability of the device.

[0019] Furthermore, the extension rod is provided with a plurality of second notches, and the second notches cut the second repair thread into a plurality of thread segments.

[0020] Since metal debris will be generated when repairing the thread, in order to prevent the metal debris from entering the intact thread and damaging it, a first notch is set so that the debris generated when repairing the thread can leave the first notch as soon as possible, ensuring that the thread will not be damaged again during repair.

[0021] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0022] (1) The present invention clamps the damaged threaded rod by rotating the first block and the second block connected to match the thread on the threaded rod with the first repair thread in the first semicircular groove and the second semicircular groove, and then rotates the thread repair device or the damaged threaded rod to repair the thread on the damaged threaded rod so that it can be smoothly screwed into the corresponding position of the equipment, so that the damaged thread can be repaired immediately, avoiding a significant impact on the construction period, ensuring the integrity of the equipment, and avoiding safety hazards;

[0023] (2) By providing the first notch, debris generated when repairing the thread can be removed from the first notch as quickly as possible, ensuring that the thread will not be damaged again during the repair;

[0024] (3) By setting a noose on the hanging ring, the thread repair device can be hung around the neck or other places to be carried around, so that it can be used at any time;

[0025] (4) When repairing external threads, the device can first determine the location of the damaged threads and then directly install the device near the damaged threads, which can speed up the repair process. In addition, the device has a simple structure and can be reduced in size, making it easy to operate and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation on the embodiments of the present invention;

[0027] Figure 1 It is a schematic diagram of the overall structure of the thread repair device in the present invention;

[0028] Figure 2 It is an exploded view of the structure of the thread repair device in the present invention;

[0029] Among them, 1-first block, 2-second block, 3-first semicircular groove, 4-second semicircular groove, 5-first repair thread, 6-extension column, 7-through hole, 8-screw, 9-butterfly nut, 10-first notch, 11-handle, 12-hanging ring, 13-prismatic hole, 14-extension rod, 15-second repair thread, 16-second notch. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those within the scope of this description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0032] Example 1

[0033] A thread repair device, such as Figure 1-Figure 2 As shown, it includes a first block 1 and a second block 2, one end of the first block 1 is rotatably connected to one end of the second block 2, the other end of the first block 1 and the other end of the second block 2 are detachably connected, the first block 1 is provided with a first semicircular groove 3, the second block 2 is provided with a second semicircular groove 4, the first semicircular groove 3 and the second semicircular groove 4 match, and the first semicircular groove 3 and the second semicircular groove 4 are both provided with a first repair thread 5 on the inner side walls.

[0034] Among them, the main body of the second block 2 is preferably a prismatic block for easy fixation. The first semicircular groove 3 and the second semicircular groove 4 form a circular hole after matching, and the first repair thread 5 on the inner wall of the first semicircular groove 3 and the second semicircular groove 4 forms a continuous thread after matching.

[0035] In a more preferred embodiment, an extension column 6 is provided at one end where the first block 1 and the second block 2 are detachably connected, and a through hole 7 is provided on the extension column 6 for accommodating one end of the second block 2. A threaded hole connected to the through hole 7 is provided at one end of the extension column 6 away from the first block 1, and a screw 8 is provided in the threaded hole.

[0036] Since the second block 2 is opened by rotation, the length of the through hole 7 provided in the extension column 6 needs to be able to accommodate one end of the second block 2 during the rotation process.

[0037] In a more preferred embodiment, the length of the screw rod 8 is greater than or equal to the length of the through hole 7 .

[0038] In a more preferred embodiment, a butterfly nut 9 for gripping is provided at one end of the screw rod 8 away from the extension column 6 .

[0039] In a more preferred embodiment, a handle 11 is provided on one side of the first block 1. The length of the handle 11 is greater than the width of the palm. In order to reduce the weight of the entire device, the handle is preferably made of a light material with high strength, such as plastic.

[0040] In a more preferred embodiment, the surface of the handle 11 is provided with anti-slip patterns.

[0041] In a more preferred embodiment, a hanging ring 12 is provided on one side of the first block 1 .

[0042] Example 2

[0043] On the basis of Example 1, Figure 1-Figure 2 A plurality of first notches 10 are formed on the inner side walls of the first semicircular groove 3 and the second semicircular groove 4. The first notches 10 cut the first repair thread 5 into a plurality of thread segments.

[0044] The number of first notches 10 is preferably 4 or more, evenly distributed on the inner walls of the first semicircular groove 3 and the second semicircular groove 4 . The length of the first notch 10 is determined according to demand to ensure that debris generated when repairing the thread can pass through the first notch 10 .

[0045] In a more preferred embodiment, a prism hole 13 is provided on the first block 1 , an extension rod 14 is detachably connected to the prism hole 13 , and a second repair thread 15 is provided on the extension rod 14 .

[0046] Among them, one end of the extension rod 14 is set to a prism structure matching the prism hole 13. During installation, one end of the extension rod 14 is embedded in the prism hole 13 and then fixed and installed by means of a latch, key connection, etc.

[0047] In a more preferred embodiment, the extension rod 14 is provided with a plurality of second notches 16 , and the second notches 16 cut the second repair thread 15 into a plurality of thread segments.

[0048] The second notches 16 are preferably provided in four or more numbers and are evenly distributed on the surface of the extension rod 14 . The length of the second notches 16 is determined according to the requirements to ensure that the debris generated when repairing the thread can pass through the second repair thread 15 .

[0049] Example 3

[0050] Based on the above embodiment, it also includes an external thread repair method using a thread repair device:

[0051] S1, open the first block 1 and the second block 2, put the external threaded component to be repaired into the first semicircular groove 3, so that the thread of the repair external threaded component matches the first repair thread 5;

[0052] S2, rotating the second block 2 so that the second semicircular groove 4 matches the first semicircular groove 3;

[0053] S3, fixing the first block 1 and the second block 2, and rotating the first block 1 to repair the thread of the external threaded part to be repaired;

[0054] S4. After the repair is completed, the first block 1 and the second block 2 are opened to take out the external threaded part to be repaired.

[0055] In a more preferred embodiment, S301, one end of the rotated second block 2 is embedded in the through hole 7, and the screw 8 is rotated so that the screw 8 moves toward the second block 2 to fix and lock the second block 2; the screw 8 can not only fix the first block 1 and the second block 2, but also provide sufficient pressure for one end of the second block 2, so that the second block 2 presses the external threaded part to be repaired, and the thread of the external threaded part to be repaired can fit tightly with the first repair thread 5, thereby enhancing the repair effect;

[0056] In a more preferred embodiment, it also includes an internal thread repair method using a thread repair device:

[0057] S11, determining the thread size of the internal threaded part to be repaired, inserting the extension rod 14 of the corresponding size into the prism hole 13 and fixing it;

[0058] S22, embedding the second repair thread 15 on the extension rod 14 into the internal threaded part to be repaired;

[0059] S33, if the internal threaded part to be repaired is not fixed, it needs to be fixed, holding the handle 11 and rotating the thread repairing device;

[0060] S44, after the internal threaded part to be repaired is repaired, the extension rod 14 is taken out. If the repair is completed, the extension rod 14 is taken out. If the remaining internal threaded parts to be repaired need to be repaired, the process returns to step S11.

[0061] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0062] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A thread repair device, characterized in that: The invention comprises a first block (1) and a second block (2), wherein one end of the first block (1) is rotatably connected to one end of the second block (2), and the other end of the first block (1) is detachably connected to the other end of the second block (2). The first block (1) is provided with a first semicircular groove (3), and the second block (2) is provided with a second semicircular groove (4). The first semicircular groove (3) and the second semicircular groove (4) match each other, and the inner side walls of the first semicircular groove (3) and the second semicircular groove (4) are both provided with a first repair thread (5).

2. A thread repair device according to claim 1, characterized in that: An extension column (6) is provided at one end of the first block (1) and the second block (2) that are detachably connected, and a through hole (7) is provided on the extension column (6) for accommodating one end of the second block (2); a threaded hole connected to the through hole (7) is provided at one end of the extension column (6) away from the first block (1), and a screw (8) is provided in the threaded hole.

3. A thread repair device according to claim 2, characterized in that: The length of the screw rod (8) is greater than or equal to the length of the through hole (7).

4. A thread repair device according to claim 2, characterized in that: A butterfly nut (9) for gripping is provided at one end of the screw rod (8) away from the extension column (6).

5. A thread repair device according to claim 1, characterized in that: A plurality of first notches (10) are provided on the inner side walls of the first semicircular groove (3) and the second semicircular groove (4), and the first notches (10) cut the first repair thread (5) into a plurality of thread segments.

6. A thread repair device according to claim 1, characterized in that: A handle (11) is provided on one side of the first block (1).

7. A thread repair device according to claim 6, characterized in that: The surface of the handle (11) is provided with anti-slip patterns.

8. A thread repair device according to claim 1, characterized in that: A hanging ring (12) is provided on one side of the first block (1).

9. A thread repair device according to claim 1, characterized in that: The first block (1) is provided with a prism hole (13), an extension rod (14) is detachably connected to the prism hole (13), and the extension rod (14) is provided with a second repair thread (15).

10. A thread repair device according to claim 9, characterized in that: The extension rod (14) is provided with a plurality of second notches (16), and the second notches (16) cut the second repair thread (15) into a plurality of thread segments.

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