CN203201959U

CN203201959U - Sealing nut

Info

Publication number: CN203201959U
Application number: CN 201320173349
Authority: CN
Inventors: 费金宝; 邬国凡; 王涛; 熊良军
Original assignee: China Aircraft Power Machinery Institute
Current assignee: China Aircraft Power Machinery Institute
Priority date: 2013-04-09
Filing date: 2013-04-09
Publication date: 2013-09-18
Anticipated expiration: 2023-04-09

Abstract

The utility model provides a sealing nut, which comprises a nut body. A threaded through hole is formed in the nut body. Labyrinth seals are machined on the outer peripheral wall of the nut body. According to the sealing nut, the labyrinth seals for sealing a bearing chamber are machined on the outer peripheral wall of the nut body; in actual application, when the nut body is tightened on a rotor of an engine, the bearing cavity can be sealed through lubricating oil under the action of the labyrinth seals; and under the action of the nut body, a bearing on the rotor of the engine can be fastened. Compared with the prior art, the sealing nut has the advantages that the locking of the bearing on the rotor of the engine and the lubricating oil sealing of the bearing chamber can be simultaneously realized only through the sealing nut, so that the number of components on an aircraft engine is effectively reduced; the sealing nut is simple in structure; and in addition, a mature technology is adopted for the machining of the labyrinth seals, so that the labyrinth seals are easy to machine.

Description

The nut of obturaging

Technical field

The utility model relates to the aeroengine field, especially, relates to a kind of nut of obturaging.

Background technique

At present, shown in Figure 1 such as accompanying drawing in the production application of reality, in order to lock the bearing 5 that is installed on the engine rotor 4, generally install nut 6 at the end of engine rotor 4, thereby by nut 6 bearing 5 is fixed tightly on the engine rotor 4; And the sealing of the lubricating oil of the bearing bore 7 of installation engine rotor 4 usually is to realize by the sealing comb tooth 8 that is installed on the engine rotor 4.Lubricating oil when being fixed tightly in bearing 5 on the engine rotor 4 in the stuffing box bearing chamber 7 just need to adopt nut 6 and sealing comb tooth 8 simultaneously, thereby so that engine structure comparatively complexity, weight are heavier, be unfavorable for the design of aeroengine.

The model utility content

The utility model aims to provide a kind of simple in structure, nut of obturaging of being easy to process and can effectively reduce the quantity of component on the aeroengine, existing engine structure is comparatively complicated, weight is heavier to solve, and is unfavorable for the technical problem of Aeroengine Design.

For achieving the above object, the utility model provides a kind of nut of obturaging, and comprises nut body, offers tapped through hole on the nut body, is processed with the comb tooth of obturaging on the periphery wall of nut body.

Further, the comb tooth of obturaging comprises a plurality of ringwise comb teeth, and a plurality of comb teeth are arranged successively along the axial direction of nut body.

Further, a plurality of comb teeth comprise first group of comb tooth and second group of comb tooth, and first group of comb tooth and second group of comb tooth are arranged at respectively the two ends of nut body.

Further, offer a plurality of bleeds hole on the periphery wall of nut body and between first group of comb tooth and second group of comb tooth, a plurality of bleeds hole is communicated with along the radial arrangement of nut body and with tapped through hole.

Further, the number of first group of comb tooth and second group of comb tooth is 2.

The utlity model has following beneficial effect:

According to the nut of obturaging of the present utility model, in the application of reality, when being tightened in nut body on the engine rotor, by the effect of obturaging the comb tooth, can carry out the lubricating oil sealing to bearing bore, and the effect by nut body, can the bearing that be installed on the engine rotor be tightened up, compared to existing technology, only need just can be locked the bearing on the engine rotor simultaneously by the nut of obturaging of the present utility model and bearing bore is carried out the lubricating oil sealing, have effectively reduced the quantity of component on the aeroengine; And the nut structure of obturaging is simple, and the processing of the comb tooth of obturaging again belongs to ripe technology, is easy to processing.

Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.

Description of drawings

The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of prior art;

Fig. 2 is the structural representation according to the nut of obturaging of the present utility model;

Fig. 3 is the sectional structure schematic diagram of Fig. 2;

Fig. 4 is assemblied in structural representation on the engine rotor according to the nut of obturaging of the present utility model.

Marginal data:

1, nut body; 2, the comb tooth of obturaging; 21, comb tooth; 3, bleed hole; 4, engine rotor; 5, bearing; 6, nut; 7, bearing bore; 8, sealing comb tooth.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

As shown in Figure 3 and Figure 4, the nut of obturaging of the present utility model comprises nut body 1, offers tapped through hole on the nut body 1, is processed with the comb tooth 2 of obturaging on the periphery wall of nut body 1.According to the nut of obturaging of the present utility model, be processed with the comb tooth 2 of obturaging for stuffing box bearing chamber 7 on the periphery wall of nut body 1, in the application of reality, when being tightened in nut body 1 on the engine rotor 4, by the effect of obturaging comb tooth 2, can carry out the lubricating oil sealing to bearing bore 7, and the effect by nut body 1, can the bearing 5 that be installed on the engine rotor 4 be tightened up, compared to existing technology, only need just can be locked the bearing 5 on the engine rotor 4 simultaneously by the nut of obturaging of the present utility model and bearing bore 7 is carried out the lubricating oil sealing, effectively reduce the quantity of component on the aeroengine; And the nut structure of obturaging is simple, and the processing of the comb tooth 2 of obturaging again belongs to ripe technology, is easy to processing.

Particularly, as shown in Figure 2, the comb tooth 2 of obturaging comprises a plurality of ringwise comb teeth 21, and a plurality of comb teeth 21 are arranged successively along the axial direction of nut body 1, and a plurality of comb teeth 21 comprise first group of comb tooth and second group of comb tooth, and first group of comb tooth and second group of comb tooth are arranged at respectively the two ends of nut body 1.In the present embodiment, the number of first group of comb tooth and second group of comb tooth is 2.Certainly, according to the practical application of the nut of obturaging, the number of first group of comb tooth and second group of comb tooth can be arbitrary number, and the number of first group of comb tooth and second group of comb tooth can be not identical.

Further, again referring to shown in Figure 2, on the periphery wall of nut body 1 and be positioned at asking of first group of comb tooth and second group of comb tooth and also offer a plurality of bleeds hole 3, the lonely L3 of a plurality of bleeds is communicated with along the radial arrangement of nut body 1 and with tapped through hole.In the present embodiment, the number in a plurality of bleed hole 3 is 1.During real work, because bleed hole 3 is communicated with tapped through hole, introduce the pressurized gas of suitable pressure ratio by bleed hole 3, more be conducive to provide with bearing bore 7 form the required pressure of lubricating oil sealing.

As can be seen from the above description, the utility model the above embodiments have realized following technique effect:

According to the nut of obturaging of the present utility model, in the application of reality, when being tightened in nut body on the engine rotor, by the effect of obturaging the comb tooth, can carry out the lubricating oil sealing to bearing bore, and the effect by nut body, can the bearing that be installed on the engine rotor be tightened up, compared to existing technology, only need just can be locked the bearing on the engine rotor simultaneously by the nut of obturaging of the present utility model and bearing bore is carried out the lubricating oil sealing, have effectively reduced the quantity of component on the aeroengine; And the nut structure of obturaging is simple, and the processing of the comb tooth of obturaging belongs to ripe technology, is easy to processing.

The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the nut of obturaging comprises nut body (1), and described nut body offers tapped through hole on (1), it is characterized in that, is processed with the comb tooth (2) of obturaging on the periphery wall of described nut body (1).

2. the nut of obturaging according to claim 1 is characterized in that, the described comb tooth (2) of obturaging comprises a plurality of ringwise comb teeth (21), and a plurality of described comb teeth (21) are arranged successively along the axial direction of described nut body (1).

3. the nut of obturaging according to claim 2 is characterized in that, a plurality of described comb teeth (21) comprise first group of comb tooth and second group of comb tooth, and described first group of comb tooth and described second group of comb tooth are arranged at respectively the two ends of described nut body (1).

4. the nut of obturaging according to claim 3, it is characterized in that, offer a plurality of bleeds hole (3) on the periphery wall of described nut body (1) and between described first group of comb tooth and described second group of comb tooth, described a plurality of bleeds holes (3) are communicated with along the radial arrangement of described nut body (1) and with described tapped through hole.

5. the nut of obturaging according to claim 4 is characterized in that, the number of described first group of comb tooth and described second group of comb tooth is 2.