Maintenance and inspection device for circulating water pump of power plant

Abstract

The utility model discloses a maintenance inspection device for a circulating water pump of a power plant, which relates to the technical field of water pump maintenance tools and comprises a grip, two groups of jaws are distributed at the front end of the grip, sleeve blocks are respectively sleeved on the sides, close to each other, of the jaws, fixing blocks are connected to the outer surfaces of the sleeve blocks, and U-shaped blocks are inserted on the outer sides of the fixing blocks. By arranging the U-shaped block and the fixing block, when a screw with a large specification is clamped, the purpose of increasing the clamping area can be achieved by moving the position of the U-shaped block, namely, the firmness and the stability when the device is used for clamping and applying force can be effectively improved, so that the maintenance efficiency of a water pump is guaranteed; and after the device is used for a period of time, a worker can sequentially rotate the rotating block, so that each group of inserting rods are respectively pulled out from the inside of the jaw, and the damaged fixed block or the U-shaped block can be timely detached for replacement, so that the maintenance cost of the device is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump maintenance tools, in particular to a maintenance and inspection device for a circulating water pump in a power plant. Background Art

[0002] Circulating water pumps play a vital role in power plants. They not only provide cooling water to the turbine condenser to cool the steam exhausted by the turbine, but also provide cooling water to the oil cooler, water cooler, and air cooler of the generator. In order to ensure the stable operation of the circulating water pump, the staff is required to perform regular maintenance inspections. During the maintenance of the circulating water pump, the staff is required to use a wrench to disassemble the water pump.

[0003] At present, the existing wrenches are mainly composed of components such as a handle, a fixed jaw, a movable jaw and an open adjusting nut. When the water pump needs to be disassembled and assembled, the screw can be clamped and twisted by bringing the movable jaw and the fixed jaw closer together. Since the lengths of the fixed jaw and the movable jaw are fixed, when it is necessary to clamp a larger screw, the contact area between the jaw and the screw surface will be smaller, which will cause unstable clamping and difficulty in applying force. For this reason, we propose a maintenance and inspection device for a circulating water pump in a power plant to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a maintenance and inspection device for a circulating water pump in a power plant.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A maintenance and inspection device for a circulating water pump in a power plant comprises a handle, two groups of jaws are distributed at the front end of the handle, and sleeve blocks are respectively sleeved on the sides of the jaws close to each other, the outer surface of the sleeve block is connected to a fixed block, and a U-shaped block is inserted on the outer side of the fixed block, a groove hole is opened inside the U-shaped block, and a threaded rod is connected to the inner wall of the groove hole through a bearing, a bevel gear set is sleeved on the outer side of the threaded rod, and a connecting shaft is connected to the side of the bevel gear set, and the connecting shaft extends to the outside of the U-shaped block, the outer side of the threaded rod is connected to a limit rod through a threaded sleeve, and the side of the fixed block is opened with a slot matched with the limit rod.

[0007] Preferably, the sides of the U-shaped block are symmetrically connected with positioning bars, and the interior of the sleeve block is provided with a sliding groove matched with the positioning bar.

[0008] Preferably, the end of the connecting shaft is connected to a rotating bar, and the outer surface of the rotating bar is evenly provided with anti-slip grooves.

[0009] Preferably, rubber strips are evenly glued to the outer surfaces of the U-shaped block and the fixed block, and anti-slip particles are evenly distributed on the outer surfaces of the rubber strips.

[0010] Preferably, the sleeve block is arranged as a U-shaped structure, an insertion rod is symmetrically inserted inside the sleeve block, one end of the insertion rod is connected to a rotating block, the other end of the insertion rod extends into the jaws, and a docking groove adapted to the insertion rod is opened inside the jaws.

[0011] Preferably, an outer surface of the insertion rod is provided with an external thread, and an inner wall of the docking groove is provided with an internal thread.

[0012] Preferably, two groups of threaded sleeves are provided, and the two groups of threaded sleeves are symmetrically distributed about the center axis of the U-shaped block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The device is provided with a U-shaped block and a fixed block. When clamping a larger screw, the position of the U-shaped block is moved to increase the clamping area, which can effectively improve the firmness and stability when clamping and applying force using the device, so as to ensure the maintenance efficiency of the water pump.

[0015] 2. The device is provided with sleeve blocks and insertion rods. After being used for a period of time, the staff can rotate the rotating blocks in sequence, so that each group of insertion rods can be pulled out from the inside of the jaws respectively, and the damaged fixed blocks or U-shaped blocks can be disassembled and replaced in time, so as to effectively reduce the maintenance cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a maintenance and inspection device for a circulating water pump in a power plant proposed by the utility model;

[0017] Figure 2 for Figure 1 A three-dimensional schematic diagram of the jaws and the sleeve block structure;

[0018] Figure 3 for Figure 1 A three-dimensional cross-sectional diagram of the slot hole and threaded rod structure;

[0019] Figure 4 for Figure 1 Schematic diagram of the three-dimensional cross-section of the insertion rod and rotating block structure.

[0020] In the figure: 1. handle; 2. jaws; 3. sleeve block; 4. fixing block; 5. U-shaped block;

[0021] 6. Slot; 7. Threaded rod; 8. Bevel gear set; 9. Connecting shaft; 10. Rotating bar;

[0022] 11. Threaded sleeve; 12. Limit rod; 13. Positioning strip; 14. Insertion rod; 15. Rotating block; 16. Rubber strip. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-4 A maintenance and inspection device for a circulating water pump in a power plant comprises a handle 1, two groups of jaws 2 are distributed at the front end of the handle 1, and sleeve blocks 3 are respectively sleeved on the sides of the jaws 2 close to each other, one group of jaws 2 is fixedly connected to the handle 1, and the other group of jaws 2 is movably connected to the handle 1. The adjustment principle of the movable jaws 2 is the prior art and will not be described in detail here. The outer surface of the sleeve block 3 is connected to a fixed block 4, and a U-shaped block 5 is inserted into the outer side of the fixed block 4. A slot 6 is opened inside the U-shaped block 5, and the inner wall of the slot 6 is passed through a bearing. A threaded rod 7 is connected, a bevel gear set 8 is sleeved on the outer side of the threaded rod 7, and a connecting shaft 9 is connected to the side of the bevel gear set 8, the connecting shaft 9 extends to the outside of the U-shaped block 5, the outer side of the threaded rod 7 is connected to the limit rod 12 through a threaded sleeve 11, and a slot matched with the limit rod 12 is opened on the side of the fixed block 4. The bevel gear set 8 is composed of two groups of bevel gears, and the two groups of bevel gears are fixedly sleeved on the outer side of the threaded rod 7 and the outer side of the connecting shaft 9 respectively, so when the connecting shaft 9 rotates, the threaded rod 7 can be driven to reverse rotation.

[0025] Further, see Figure 2 and Figure 4 It can be seen that the sides of the U-shaped block 5 are symmetrically connected with positioning bars 13, and the interior of the sleeve block 3 is provided with a slide groove adapted to the positioning bar 13. The mutual cooperation between the positioning bar 13 and the slide groove can ensure the stability of the U-shaped block 5 during movement.

[0026] Further, see Figure 3 and Figure 4 It can be seen that the end of the connecting shaft 9 is connected to a rotating bar 10, and the outer surface of the rotating bar 10 is evenly provided with anti-slip grooves. Through the provision of the rotating bar 10 and the anti-slip grooves, it is convenient for the staff to quickly drive the rotation of the connecting shaft 9, thereby effectively improving the convenience of using the device.

[0027] Further, see Figure 1 and Figure 2It can be seen that the outer surfaces of the U-shaped block 5 and the fixed block 4 are evenly glued with rubber strips 16, and the outer surface of the rubber strips 16 is evenly distributed with anti-slip particles. The rubber strips 16 and anti-slip particles set with rubber material can further ensure the clamping effect of the fixed block 4 and the U-shaped block 5 on the screws.

[0028] Further, see Figure 2 and Figure 4 It can be known that the sleeve block 3 is configured as a U-shaped structure, and an insertion rod 14 is symmetrically inserted inside the sleeve block 3, and one end of the insertion rod 14 is connected to a rotating block 15, and the other end of the insertion rod 14 extends into the jaw 2, and a docking groove adapted to the insertion rod 14 is opened inside the jaw 2. Through the mutual cooperation of the insertion rod 14 and the docking groove, the damaged sleeve block 3 can be separated from the jaw 2 as a whole after a period of use, and the reuse of the jaw 2 and the handle 1 can be guaranteed.

[0029] Further, see Figure 4 It can be seen that the outer surface of the insertion rod 14 is provided with an external thread, and the inner wall of the docking groove is provided with an internal thread. The internal and external threads are not shown in the figure. The tightness of the sleeve block 3 and the jaw 2 during the connection process can be ensured by the threaded cooperation between the insertion rod 14 and the docking groove.

[0030] Further, see Figure 3 It can be known that there are two groups of threaded sleeves 11, and the two groups of threaded sleeves 11 are symmetrically distributed about the central axis of the U-shaped block 5. The outer surface of the threaded rod 7 is provided with two groups of external threads in opposite directions. Since there are two groups of threaded sleeves 11, there are also two groups of limit rods 12 and card slots. Through the setting of two groups of limit rods 12, the tightness of the U-shaped block 5 and the fixed block 4 during the connection process can be guaranteed.

[0031] Working principle: When the utility model is in use, after the circulating water pump has been running for a period of time, the staff needs to disassemble the circulating water pump as a whole in order to check and maintain the various components inside it. Then the staff can rotate the rotating bar 10 in sequence according to the specifications of the screws on the circulating water pump, thereby driving the connecting shaft 9 to rotate at the same time, and with the setting of the bevel gear set 8, the threaded rod 7 can be driven to rotate in reverse. At this time, the two groups of threaded sleeves 11 sleeved on the outer side of the threaded rod 7 can move in opposite directions inside the groove 6, so that the limit rod 12 can be pulled out from the inside of the fixed block 4, and then the staff can push the U-shaped block 5, so that the fixed block can be 4 and the U-shaped block 5 are adjusted to a suitable distance. After the adjustment is completed, the staff can rotate the rotating bar 10 in the opposite direction, so that the two sets of limit rods 12 are embedded in the card slots opened inside the fixed block 4 again to achieve the limitation of the U-shaped block 5. After the position of the U-shaped block 5 is adjusted in sequence, the staff can hold the handle 1, and then the jaws 2 and the sleeve block 3 can be clamped to the outside of the screw, and then the open adjusting nut provided on the handle 1 can be rotated to complete the clamping of the screw, and then the staff can disassemble the water pump, thereby facilitating the maintenance and inspection of the inside of the water pump. The above is the entire working principle of the utility model.

[0032] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0033] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0034] In the present utility model, unless otherwise stated, the directional words contained in the terms such as "up, down, left, right, front, back, inside, outside, vertical, horizontal" only represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, number series nouns such as "first", "second" and "third" do not represent specific quantities and orders, but are merely used to distinguish names. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A maintenance and inspection device for a circulating water pump in a power plant, comprising a handle (1), characterized in that: Two groups of jaws (2) are distributed at the front end of the handle (1), and sleeve blocks (3) are respectively sleeved on the mutually adjacent sides of the jaws (2); the outer surface of the sleeve block (3) is connected to a fixed block (4), and a U-shaped block (5) is inserted on the outer side of the fixed block (4); a slot (6) is provided inside the U-shaped block (5), and a threaded rod (7) is connected to the inner wall of the slot (6) through a bearing; a bevel gear set (8) is sleeved on the outer side of the threaded rod (7), and a connecting shaft (9) is connected to the side of the bevel gear set (8); the connecting shaft (9) extends to the outside of the U-shaped block (5); the outer side of the threaded rod (7) is connected to a limit rod (12) through a threaded sleeve (11), and a slot matching the limit rod (12) is provided on the side of the fixed block (4).

2. A maintenance and inspection device for a circulating water pump in a power plant according to claim 1, characterized in that: The sides of the U-shaped block (5) are symmetrically connected with positioning strips (13), and a sliding groove matching the positioning strips (13) is provided inside the sleeve block (3).

3. The maintenance and inspection device for a circulating water pump in a power plant according to claim 1, characterized in that: The end of the connecting shaft (9) is connected to a rotating bar (10), and the outer surface of the rotating bar (10) is evenly provided with anti-slip grooves.

4. The maintenance and inspection device for a circulating water pump in a power plant according to claim 1, characterized in that: The outer surfaces of the U-shaped block (5) and the fixed block (4) are respectively evenly glued with rubber strips (16), and the outer surfaces of the rubber strips (16) are evenly distributed with anti-skid particles.

5. The maintenance and inspection device for a circulating water pump in a power plant according to claim 1, characterized in that: The sleeve block (3) is configured as a U-shaped structure, an insertion rod (14) is symmetrically inserted into the sleeve block (3), one end of the insertion rod (14) is connected to a rotating block (15), the other end of the insertion rod (14) extends into the jaws (2), and a docking groove adapted to the insertion rod (14) is provided inside the jaws (2).

6. A maintenance and inspection device for a circulating water pump in a power plant according to claim 5, characterized in that: The outer surface of the insertion rod (14) is provided with an external thread, and the inner wall of the docking groove is provided with an internal thread.

7. The maintenance and inspection device for a circulating water pump in a power plant according to claim 1, characterized in that: Two groups of threaded sleeves (11) are provided in total, and the two groups of threaded sleeves (11) are symmetrically distributed about the central axis of the U-shaped block (5).

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