Centrifugal air compressor turning tool

Abstract

The utility model provides a turning tool for a centrifugal air compressor. The centrifugal air compressor turning tool comprises a contact plate, a limiting block and a handle, the contact plate is provided with a face A and a face B which are oppositely arranged, the limiting block is connected to the face B, one end of the handle is connected to the face B, the other end of the handle extends to the outer side of the contact plate in the first direction X, the limiting block extends to the outer side of the contact plate in the second direction Y, and the limiting block is connected to the face A and the face B; the first direction X and the second direction Y are perpendicular to each other on the same overlook projection plane, and the limiting block extends by a certain height H on the face B perpendicular to the limiting block. By means of the lever principle, force is applied to the bolt on the flange, the coupler is made to rotate, turning before centrifugal starting is achieved, the flange can also be applied without a groove, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal air compressor maintenance, in particular to a centrifugal air compressor turning tool. Background Art

[0002] Air compression stations operate in dusty environments. After a centrifugal air compressor is shut down, dust particles and carbon scale from the impeller case remain trapped in the gap between the impeller and the shaft seal. When the compressor is restarted, the impeller speed reaches 12,500 rpm. High-speed friction between the carbon scale, dust, and the shaft seal is inevitable, potentially scratching the seal. Therefore, it's necessary to crank the impeller at a low speed before starting the compressor. This allows the carbon scale and dust to escape from the gap during rotation, preventing friction and seal wear.

[0003] Existing cranking tools, such as an air compressor cranking tool disclosed in patent publication number CN213235370U, use a ratchet force rod. When in use, the socket on the ratchet force rod is clamped into the groove on the coupling, and the second clamping seat on the ratchet force rod is clamped on the side wall of the coupling, so that the socket forms a fulcrum in the groove and the side wall of the coupling, and the ratchet force rod is pulled downward clockwise to rotate the coupling.

[0004] This turning tool requires a groove to be opened on the flange of the coupling. For turning a coupling without a groove, this tool is not applicable. Utility Model Content

[0005] The utility model aims to provide a centrifugal air compressor cranking tool, which is suitable for cranking a centrifugal air compressor whose coupling flange has no groove.

[0006] The technical solution of the utility model is: a centrifugal air compressor turning tool, including a contact plate, a limit block and a handle, the contact plate having an A surface and a B surface arranged opposite to each other, the limit block being connected to the B surface, one end of the handle being connected to the B surface, the other end of the handle extending along a first direction X to the outside of the contact plate, the limit block extending along a second direction Y, the first direction X and the second direction Y being perpendicular to each other on the same top projection plane, and the limit block extending to a certain height H perpendicular to the B surface.

[0007] Preferably, the surface A of the contact plate is an arc-shaped surface.

[0008] Preferably, the contact plate includes a first plate, a second plate and a third plate arranged in sequence in the first direction X, the second plate is an arc-shaped plate, the concave surface of the arc-shaped plate forms the A surface, the convex surface of the arc-shaped plate forms the B surface, and the first plate and the third plate are horizontally extending flat plates.

[0009] Preferably, a distance L1 is formed between the limiting block and the first plate, and a distance L2 is formed between the limiting block and the third plate, and L1>L2.

[0010] Preferably, the handle is located beside the limiting block.

[0011] Preferably, the handle is a round rod or a polygonal rod.

[0012] Compared with the related art, the beneficial effects of the present invention are:

[0013] 1. By designing a contact plate and a limit block, the contact plate contacts the shaft of the centrifugal air compressor coupling, and the limit block contacts the bolts on the coupling flange. Through the handle, using the principle of leverage, force is applied to the bolts on the flange to rotate the coupling, thus achieving cranking before starting the centrifugal machine. It is also applicable even if there is no groove on the flange, and has a wider range of uses.

[0014] Second, the contact plate is designed to be arc-shaped, which can adapt to the outer surface of the shaft and increase the contact area with the outer surface of the shaft, forming a more stable support point. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the centrifugal air compressor turning tool provided by the utility model;

[0016] Figure 2 This is a front view structural diagram of the centrifugal air compressor turning tool provided by the utility model;

[0017] Figure 3 A schematic diagram of the top view of the centrifugal air compressor turning tool provided by the utility model;

[0018] Figure 4 Schematic diagram of the use of the centrifugal air compressor turning tool provided by the utility model Figure 1 ;

[0019] Figure 5 Schematic diagram of the use of the centrifugal air compressor turning tool provided by the utility model Figure 2 .

[0020] In the accompanying drawings: 1. contact plate; 11. first plate; 12. second plate; 13. third plate; 2. limit block; 3. handle; 4. shaft; 5. coupling; 6. bolt. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0022] like Figure 1-Figure 3 As shown, a centrifugal air compressor turning tool provided in this embodiment includes a contact plate 1, a limit block 2 and a handle 3.

[0023] The contact plate 1 has an A surface and a B surface that are oppositely disposed. The contact plate 1 includes a first plate 11, a second plate 12, and a third plate 13 that are sequentially disposed in a first direction X. The second plate 12 is an arc-shaped plate, the concave surface of which forms the A surface, and the convex surface of which forms the B surface. The first plate 11 and the third plate 13 are horizontally extending flat plates.

[0024] The limit block 2 is a long rectangular block connected to the B surface. The limit block 2 extends perpendicular to the B surface to a certain height H.

[0025] The limit block 2 extends along the second direction Y. One end of the handle 3 is connected to the B surface, and the other end of the handle 3 extends to the outside of the contact plate 1 along the first direction X. The first direction X and the second direction Y are perpendicular to each other on the same top projection plane. The distance L3 between the end of the handle 3 connected to the B surface and the center of the second plate 12 is 10 mm (as shown in FIG. Figure 3 shown).

[0026] In another embodiment, only the A surface of the limit block 2 can be designed as an arc surface. The arc-shaped A surface can increase the contact surface between the limit block 2 and the shaft body 4.

[0027] like Figure 3 As shown, the handle 3 is located beside the limiting block 2 , that is, the length of the limiting block 2 plus the width of the handle 3 is equal to the width of the contact plate 1 .

[0028] like Figure 4 As shown, the side surface of the limit block 2 facing the first plate 11 needs to be in contact with the bolt 6 and bear the force, so as to better transmit the force. Figure 2 As shown, the limit block 2 is an offset structure on the contact plate 1, that is, the horizontal distance L1 from the limit block 2 to the first plate 11 is greater than the horizontal distance L2 from the limit block 2 to the third plate 13, which can rotate the coupling 5 in a more labor-saving manner.

[0029] The centrifugal air compressor turning tool can be made of 8mm carbon structural steel. The handle 3 is a round rod or a polygonal rod.

[0030] like Figure 4 、 Figure 5 As shown, during use, the A surface of the contact plate 1 is aligned with the outer surface of the shaft 4 of the coupling 5. The vertical surface of the stopper 2 facing the first plate 11 contacts the bolt 6 on the flange of the coupling 5. Turning the handle 3 clockwise transmits force to the bolt 6 through the stopper 2, causing the coupling 5 to rotate, thus achieving cranking before starting the centrifuge. This cranking can prevent friction and jamming in the centrifugal air compressor and prevent shaft seal wear.

[0031] The centrifugal air compressor cranking tool provided by the utility model has the advantages of simple structure, convenient operation, safety and reliability, can realize the cranking before starting the centrifuge and the low-speed rotation of the impeller, has high efficiency and is suitable for popularization and application.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A centrifugal air compressor turning tool, characterized in that: The invention comprises a contact plate (1), a limit block (2) and a handle (3), wherein the contact plate (1) has an A surface and a B surface which are arranged opposite to each other, the limit block (2) is connected to the B surface, one end of the handle (3) is connected to the B surface, the other end of the handle (3) extends along a first direction X to the outside of the contact plate (1), the limit block (2) extends along a second direction Y, the first direction X and the second direction Y are perpendicular to each other on the same top projection plane, and the limit block (2) extends to a certain height H perpendicular to the B surface.

2. The centrifugal air compressor turning tool according to claim 1, characterized in that: The surface A of the contact plate (1) is an arc-shaped surface.

3. The centrifugal air compressor turning tool according to claim 1, characterized in that: The contact plate (1) comprises a first plate (11), a second plate (12) and a third plate (13) which are arranged in sequence in a first direction X; the second plate (12) is an arc-shaped plate, the concave surface of the arc-shaped plate forms the A surface, the convex surface of the arc-shaped plate forms the B surface, and the first plate (11) and the third plate (13) are flat plates extending horizontally.

4. The centrifugal air compressor turning tool according to claim 3, characterized in that: A distance L1 is formed between the limit block (2) and the first plate (11), and a distance L2 is formed between the limit block (2) and the third plate (13), where L1>L2.

5. The centrifugal air compressor turning tool according to claim 1, characterized in that: The handle (3) is located beside the limiting block (2).

6. The centrifugal air compressor turning tool according to claim 1, characterized in that: The handle (3) is a round rod or a polygonal rod.

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