Coupling diaphragm disc structure with high compensation capability

Abstract

The utility model relates to a coupling diaphragm disc structure with strong compensation capability, which comprises a first disc surface, a second disc surface, a connecting hub and a protective plate, and the first disc surface and the second disc surface are respectively arranged at the upper end and the lower end of the connecting hub; a first connecting flange is arranged on the outer ring of the first disc surface, and a second connecting flange is arranged on the outer ring of the second disc surface; a protective plate is arranged on the second connecting flange, and a check ring extending inwards and upwards is arranged on the protective plate; and the outer surfaces of the first disc surface and the second disc surface are curved surfaces formed by a plurality of sections of smooth planes. Under the condition that the outer diameter size is specified, compared with a membrane disc of a single-molded-surface structure, the membrane disc has large axial compensation capacity and angular compensation capacity, by means of the first disc face and the second disc face which are different in thickness, when the membrane disc is used, even if the diameters of the first disc face and the second disc face are different, the consistent axial rigidity can be kept, and therefore the membrane disc is not prone to deformation. In the using process, deformation can be generated at the same time; the guard plate is simple in structure and convenient to install, and has an anti-flying function.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplings and relates to a coupling diaphragm disc structure with strong compensation capability. Background Art

[0002] Diaphragm couplings are widely used in various pumps, fans, and compressor units driven by gas turbines, steam turbines, and electric motors. They are particularly suitable for high-speed, high-power turbine compressor units that are sensitive to coupling weight and suspension bending moment.

[0003] The diaphragm in the traditional diaphragm coupling generally adopts a single "profile" diaphragm structure, but the compensation capacity of the single "profile" diaphragm structure is limited;

[0004] There are also some couplings with double "profile" diaphragm disc structures, which are suitable for occasions where the thermal expansion of the unit is relatively small, but their guard plate positioning structure is complex and the installation process is relatively cumbersome. Summary of the invention

[0005] The utility model aims to overcome the deficiencies in the prior art, solve the problems of limited compensation capability of the diaphragm disc structure of the diaphragm disc coupling and complex guard plate structure, and provide a diaphragm disc structure of the coupling with strong compensation capability.

[0006] In order to achieve the above purpose, the following technical solutions are adopted:

[0007] The coupling diaphragm disc structure with strong compensation ability comprises a first disc surface, a second disc surface, a connecting hub and a guard plate, wherein the upper end and the lower end of the connecting hub are respectively provided with the first disc surface and the second disc surface; the outer ring of the first disc surface is provided with a first connecting flange, and the outer ring of the second disc surface is provided with a second connecting flange; a guard plate is provided on the second connecting flange, and the lower end of the guard plate is provided with a positioning stop protruding from the second connecting flange, a first inclined surface is provided on the inner side of the lower end of the positioning stop, and a retaining ring extending inward and upward is provided on the upper end of the guard plate; the outer surfaces of the first disc surface and the second disc surface are curved surfaces composed of multiple sections of smooth planes, and the thickness of the same axial section of the first disc surface and the second disc surface is different.

[0008] Preferably, a smooth transition is adopted between the first disk surface and the first connecting flange.

[0009] Preferably, a smooth transition is adopted between the second disk surface and the second connecting flange.

[0010] Preferably, a smooth transition process is adopted between the connecting hub and the first disc surface and the second disc surface.

[0011] Preferably, a second inclined surface is provided on the outer side of the upper end of the second connecting flange.

[0012] Preferably, the height of the retaining ring is higher than the upper end surface of the first connecting flange.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] Under the condition of specified outer diameter dimensions, the utility model has greater axial compensation capacity and angular compensation capacity than the diaphragm disc with a single-profile structure, and utilizes a first disc surface and a second disc surface of different thicknesses so that when the diaphragm disc is in use, even if the diameters of the first disc surface and the second disc surface are different, a consistent axial stiffness can be maintained, and deformation can occur simultaneously during use; the guard plate has a simple structure, is easy to install, and has an anti-flying function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a partial structural schematic diagram of the utility model.

[0017] Figure 3 for Figure 1 Enlarged view of point A in .

[0018] In the figure: 1. first disc surface; 2. second disc surface; 3. connecting hub; 4. guard plate; 5. first connecting flange; 6. second connecting flange; 7. retaining ring; 8. positioning stop; 9. first inclined surface; 10. second inclined surface. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0020] like Figure 1-Figure 3 As shown, a coupling diaphragm disc structure with strong compensation capability comprises a first disc surface 1, a second disc surface 2, a connecting hub 3 and a guard plate 4;

[0021] The upper and lower ends of the connecting hub 3 are respectively provided with a first disk surface 1 and a second disk surface 2. The diameter of the first disk surface 1 is smaller than that of the second disk surface 2, which is convenient for installing the guard plate 4 and simplifies the structure of the guard plate 4. The connecting hub 3 is used to connect the first disk surface 1 and the second disk surface 2.

[0022] The outer ring of the first disk surface 1 is provided with a first connecting flange 5, and the outer ring of the second disk surface 2 is provided with a second connecting flange 6;

[0023] The second connection flange 6 is provided with a guard plate 4, and a positioning stop 8 protruding from the second connection flange 6 is provided at the lower end of the guard plate 4, and a first inclined surface 9 is provided on the inner side of the lower end of the positioning stop 8, and the first inclined surface 9 makes it easy for the guard plate 4 to be assembled with the outer ring of the external flange docking with the second connection flange 6; the guard plate 4 is provided with a retaining ring 7 extending inwardly and upwardly, and the retaining ring 7 can surround the first connection flange 5 and has an anti-flying effect; the thickness of the same axial section of the first disk surface 1 and the second disk surface 2 is different, so that the axial stiffness of the first disk surface 1 and the second disk surface 2 is consistent, and deformation can occur simultaneously during use, and has a large compensation ability;

[0024] The outer surfaces of the first disk surface 1 and the second disk surface 2 are curved surfaces composed of multiple sections of smooth planes, which facilitates processing of the first disk surface 1 and the second disk surface 2 into different thicknesses.

[0025] Furthermore, a smooth transition process is adopted between the first disk surface 1 and the first connecting flange 5 , which can reduce stress concentration and improve the connection strength between the first disk surface 1 and the first connecting flange 5 .

[0026] Furthermore, a smooth transition process is adopted between the second disk surface 2 and the second connecting flange 6 , which can reduce stress concentration and improve the connection strength between the second disk surface 2 and the second connecting flange 6 .

[0027] Furthermore, a smooth transition process is adopted between the connecting hub 3 and the first disk surface 1 and the second disk surface 2, which can reduce stress concentration and improve the connection strength between the connecting hub 3 and the first disk surface 1 and the second disk surface 2.

[0028] Furthermore, a second inclined surface 10 is provided on the outer side of the upper end of the second connecting flange 6 , and the second inclined surface 10 facilitates the guard plate 4 to be quickly installed on the second connecting flange 6 .

[0029] Furthermore, the height of the retaining ring 7 is higher than the upper end surface of the first connecting flange 5 , and the retaining ring 7 can prevent the broken parts from flying out when the first disk surface 1 or the second disk surface 2 is broken.

[0030] Working principle: The utility model processes the first disk surface 1 and the second disk surface 2 into different thicknesses, so that when the diaphragm disk is in use, even if the diameters of the first disk surface 1 and the second disk surface 2 are different, they can maintain consistent axial stiffness, can deform simultaneously during use, and have a large compensation capacity; by arranging a guard plate 4 on the outer side of the diaphragm disk, it can prevent the broken parts from flying out when the first disk surface 1 or the second disk surface 4 breaks, thereby protecting the safety of surrounding equipment or personnel.

[0031] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A coupling diaphragm disc structure with strong compensation capability, comprising a first disc surface (1), a second disc surface (2), a connecting hub (3) and a guard plate (4), wherein: The upper end and the lower end of the connecting hub (3) are respectively provided with a first disk surface (1) and a second disk surface (2); the outer ring of the first disk surface (1) is provided with a first connecting flange (5), and the outer ring of the second disk surface (2) is provided with a second connecting flange (6); A guard plate (4) is arranged on the second connecting flange (6); a positioning stop (8) protruding from the second connecting flange (6) is arranged at the lower end of the guard plate (4); a first inclined surface (9) is arranged on the inner side of the lower end of the positioning stop (8); a retaining ring (7) extending inwardly and upwardly is arranged at the upper end of the guard plate (4); the outer surfaces of the first disk surface (1) and the second disk surface (2) are curved surfaces composed of multiple smooth planes; the thickness of the same axial section of the first disk surface (1) and the second disk surface (2) is different.

2. According to claim 1, a coupling diaphragm disc structure with strong compensation ability is characterized by: A smooth transition process is adopted between the first disk surface (1) and the first connecting flange (5).

3. According to the coupling diaphragm structure with strong compensation ability as claimed in claim 1, it is characterized by: A smooth transition process is adopted between the second disk surface (2) and the second connecting flange (6).

4. According to claim 1, a coupling diaphragm structure with strong compensation capability is characterized by: A smooth transition process is adopted between the connecting hub (3) and the first disc surface (1) and the second disc surface (2).

5. According to claim 1, a coupling diaphragm disc structure with strong compensation capability is characterized by: A second inclined surface (10) is provided on the outer side of the upper end of the second connecting flange (6).

6. The coupling diaphragm disc structure with strong compensation capability according to claim 1 is characterized by: The height of the retaining ring (7) is higher than the upper end surface of the first connecting flange (5).

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