CN203434779U - Sealing structure for upper-track cover plate of generator - Google Patents

Abstract

The utility model discloses a sealing structure of an upper cover plate of a generator, comprising a sealing plate, the sealing plate is a cylindrical structure, a through hole is arranged on the end surface of the cylindrical body, and a sealing sleeve in a ring structure is arranged in the through hole , the outer wall of the sealing sleeve is in contact with the inner wall of the through hole, and the axis of the sealing sleeve coincides with the axis of the through hole, and the height of the sealing sleeve is greater than the height of the cylindrical structure, the sealing plate is arranged between the two ends of the sealing sleeve, and the sealing sleeve The inner wall of the inner wall is concave to form an annular groove, and the annular groove communicates with one of the end faces of the sealing sleeve; several respirators are arranged on the end face of the sealing plate, the respirators penetrate the sealing plate, and the respirators are symmetrically fixed along the center of the sealing plate end face of the sealing plate. The sealing structure is simple in structure, simple in principle, and good in sealing effect. The reserved respirator can conveniently meet the demand for a small amount of air required by the engine oil.

Description

Generator upper cover sealing structure

technical field

The utility model relates to a sealing structure, in particular to a sealing structure of an upper cover plate of a generator, which belongs to the field of electric equipment.

Background technique

A generator is a mechanical device that converts other forms of energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator. Converted to electrical energy by a generator. Generators are widely used in industrial and agricultural production, national defense, science and technology and daily life. There are many forms of generators, but their working principles are all based on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is: use appropriate magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction with each other, so as to generate electromagnetic power and achieve the purpose of energy conversion.

Motor points: DC generators and AC generators; AC generator points: synchronous generators and asynchronous generators (rarely used); alternators can also be divided into single-phase generators and three-phase generators. There are many types of generators. In principle, it can be divided into synchronous generator, asynchronous generator, single-phase generator and three-phase generator. From the generation method, it can be divided into steam turbine generator, hydraulic generator, diesel generator, gasoline generator and so on. In terms of energy, it can be divided into thermal generators, hydroelectric generators, etc. Generators are usually composed of stators, rotors, end covers, bearings and other components. When the generator is working, it needs to use a lot of oil and other equipment, and when the oil contains more impurities, it is easy to cause poor oil supply to the motor and cause damage to the motor.

Utility model content

The purpose of this utility model is to overcome the problem that the existing motor is not properly sealed to the oil and other equipment and is easily polluted by external impurities. A sealing structure for the upper cover plate of the generator is designed. The structure of the sealing structure is simple and the principle is simple. The sealing effect is good, and the reserved respirator can facilitate the small amount of air demanded by the engine oil, and is convenient to fix, and the lifting ring can be used for mechanical hoisting and moving, which reduces the labor intensity of the operator.

The purpose of this utility model is achieved through the following technical solutions: the sealing structure of the upper cover plate of the generator includes a sealing plate, the sealing plate is a cylindrical structure, and a through hole is arranged on the end surface of the cylindrical body, and the axis of the through hole is in line with the cylindrical body. The axis of the through hole coincides, and a sealing sleeve with a ring structure is arranged in the through hole. The outer wall of the sealing sleeve is in contact with the inner wall of the through hole, and the axis of the sealing sleeve coincides with the axis of the through hole, and the height of the sealing sleeve is greater than that of the cylindrical structure. Height, the sealing plate is arranged between the two ends of the sealing sleeve, the inner wall of the sealing sleeve is concave to form an annular groove, and the annular groove communicates with one of the end faces of the sealing sleeve; the end face of the sealing plate is provided with several A respirator, the respirator runs through the sealing plate, and the respirator is symmetrically fixed on the end face of the sealing plate along the center of the sealing plate. After the sealing structure is installed on the motor, the sealing plate seals the motor, and the breather is used as a through hole to communicate with the oil, so that the oil can communicate with the outside air through the breather, and a small amount of air will not pollute the oil. The heat is dissipated. The respirator is a hollow steel pipe with a fastening device on the end surface. When the channel needs to be closed, the fastening device is used to fix other parts on the port of the steel pipe.

Three positioning posts are arranged on the wall surface of the annular groove, the axis of the positioning posts is perpendicular to the axis of the sealing sleeve, the positioning posts are evenly distributed on the wall surface of the annular groove, the outer wall of the positioning posts contacts the bottom surface of the annular groove, and The end face of the positioning post is concaved to form a threaded through hole. The positioning column is a part that can be positioned in the annular groove, and the threaded through hole is connected to other components. A rubber strip is arranged between the positioning columns to seal the through hole of the annular groove, so that the inside of the motor is sealed.

Several suspension rings are arranged on the sealing plate, and the suspension rings and the respirator are arranged on the same end surface of the sealing plate. The lifting ring is used as a part for lifting the sealing structure. The sealing structure is generally made of metal material, which is heavy and difficult to carry manually. After the lifting ring is set, it can be hoisted by machinery.

The end surface of the sealing plate is provided with several through holes, and the through holes are evenly distributed on the end surface of the sealing plate, the connection line of the through holes forms a circle, and the suspension ring is arranged on the track of the circle; the sealing sleeve Several threaded holes are arranged on the end surface, and the threaded holes are evenly distributed on the end surface of the sealing sleeve; the respirator is arranged between the through hole and the threaded hole. The through hole and the threaded hole are respectively through holes for fixedly connecting the sealing plate or the sealing sleeve with external components.

To sum up, the beneficial effects of the utility model are: the sealing structure is simple in structure and principle, and the sealing effect is good. The mechanical hoisting and moving reduces the labor intensity of the operator.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The marks in the drawings and the names of the corresponding parts: 1—breather; 2—sealing sleeve; 3—positioning column; 4—annular groove; 5—threaded hole; Hole; 9—through hole.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example 1:

As shown in Figure 1, the sealing structure of the upper cover plate of the generator includes a sealing plate 7, the sealing plate 7 is a cylindrical structure, and a through hole is arranged on the end surface of the cylinder, and the axis of the through hole coincides with the axis of the cylinder. The through hole is provided with a ring-shaped sealing sleeve 2, the outer wall of the sealing sleeve 2 is in contact with the inner wall of the through hole, and the axis of the sealing sleeve 2 coincides with the axis of the through hole, and the height of the sealing sleeve 2 is greater than that of the cylindrical structure. Height, the sealing plate 7 is arranged between the two ends of the sealing sleeve 2, the inner wall of the sealing sleeve 2 is concave to form an annular groove 4, and the annular groove 4 communicates with one of the end faces of the sealing sleeve 2; the sealing plate Several respirators 1 are arranged on the end face of 7 , the respirators 1 pass through the sealing plate 7 , and the respirators 1 are symmetrically fixed on the end face of the sealing plate 7 along the center of the sealing plate 7 . The respirator 1 is a steel pipe that protrudes a certain distance from the end face of the sealing plate 7. Compared with the volume of the entire sealing plate 7, the volume of the respirator 1 is very small. By using the respirator 1, there is a small channel between the engine oil and the outside world, neither It affects the overall sealing condition, and also keeps the viscosity of the oil in a stable state through the neutralization of the air, and the air introduced has a cooling effect. the

Example 2:

As shown in Figure 1, on the basis of Embodiment 1, three positioning columns 3 are arranged on the wall surface of the annular groove 4, the axis of the positioning columns 3 is perpendicular to the axis of the sealing sleeve 2, and the positioning columns 3 are evenly distributed in the ring. On the wall surface of the groove 4, the outer wall of the positioning post 3 is in contact with the bottom surface of the annular groove 4, and the end surface of the positioning post 3 is recessed to form a threaded through hole. The positioning column is to determine the position of other components in the annular groove 4, to prevent other components from directly rusting with the through hole due to weight or age. After the annular groove 4 is set, there is a step, and the positioning column 3 makes the seal The active rubber strips become three, forming a structure close to the circumference, and the sealing effect is more stable.

Example 3:

As shown in FIG. 1 , on the basis of the above embodiments, several lifting rings 6 are arranged on the sealing plate 7 , and the lifting rings 6 and the respirator 1 are arranged on the same end surface of the sealing plate 7 . The number of lifting rings 6 is usually two, which are arranged symmetrically along the center of the sealing plate 7. When hoisting, the two lifting rings 6 can ensure the stability and balance of the lifting, or there can be three or more than three lifting rings 6, but The lifting rings 6 must be evenly distributed on the sealing plate 7 to ensure the stability of the hoisting. The lifting rings 6 can be fixed on the sealing plate 7 by screws, or can be welded on the sealing plate 7. Usually, in order to ensure the overall stress of the sealing plate, generally It is advisable to use welding.

The end surface of the sealing plate 7 is provided with several through holes 9, and the through holes 9 are evenly distributed on the end surface of the sealing plate 7, the connection line of the through holes 9 forms a circle, and the suspension ring 6 is arranged on the track of the circle The end surface of the sealing sleeve 2 is provided with several threaded holes 5, and the threaded holes 5 are evenly distributed on the end surface of the sealing sleeve 2; A plurality of through holes 9 are used as passages for connecting the sealing plate to external components, generally as bolt connections, and the threaded holes 5 also have the same effect. In order to ensure the effectiveness of the connection, a reserved hole 8 is also provided on the sealing plate as Channels for connecting large bolts.

By adopting the above method, the utility model can be better realized.

Claims (6)

1. generator upper track cover plate for sealing structure, it is characterized in that: comprise sealing plate (7), described sealing plate (7) is cylindrical structure, on cylindrical end face, be provided with through hole, the axis of through hole and cylindrical dead in line, in through hole, be provided with the sealing shroud (2) that is circular ring structure, the outer wall of sealing shroud (2) contacts with the inwall of through hole, and the axis of sealing shroud (2) and the dead in line of through hole, and the height of sealing shroud (2) is greater than the height of cylindrical structure, sealing plate (7) is arranged between the two ends of sealing shroud (2), the inwall concave shaped of described sealing shroud (2) circularizes groove (4), and annular groove (4) is communicated with one of them end face of sealing shroud (2), on the end face of described sealing plate (7), be provided with several respirators (1), respirator (1) runs through sealing plate (7), and respirator (1) is fixed on the end face of sealing plate (7) along the Central Symmetry of sealing plate (7).

2. generator upper track cover plate for sealing structure according to claim 1, it is characterized in that: three reference columns (3) are set on the wall of described annular groove (4), the axis of reference column (3) is vertical with the axis of sealing shroud (2), reference column (3) is evenly distributed on the wall of annular groove (4), the outer wall of reference column (3) contacts with the bottom surface of annular groove (4), and the end face indent of reference column (3) forms tapped through hole.

3. generator upper track cover plate for sealing structure according to claim 1, is characterized in that: on described sealing plate (7), be provided with several suspension ring (6), suspension ring (6) and respirator (1) are arranged on the same end face of sealing plate (7).

4. generator upper track cover plate for sealing structure according to claim 3, it is characterized in that: on the end face of described sealing plate (7), be provided with several through holes (9), and through hole (9) is evenly distributed on the end face of sealing plate (7), the line of through hole (9) forms a circumference, and suspension ring (6) are arranged on the track of this circumference.

5. generator upper track cover plate for sealing structure according to claim 4, is characterized in that: on the end face of described sealing shroud (2), be provided with several screwed holes (5), and screwed hole (5) is evenly distributed on the end face of sealing shroud (2).

6. generator upper track cover plate for sealing structure according to claim 5, is characterized in that: described respirator (1) is arranged between through hole (9) and screwed hole (5).

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