CN221647247U - A self-sealing structure for a steam turbine condensate pump - Google Patents

Abstract

The utility model relates to the technical field of condensate pump self-sealing, and provides a turbine condensate pump self-sealing structure, which comprises the following components: a motor; the output shaft is fixedly arranged on the surface of the output end of the motor, and an impeller is movably arranged on the outer surface of one end of the output shaft; further comprises: the first bearing is movably mounted on the outer surface of the output shaft, a supporting shell is fixedly mounted on the outer surface of the first bearing, and bolts are movably embedded in four corners of the supporting shell, which are far away from the surface of the motor. According to the utility model, the impeller on the surface of the output shaft is driven to rotate through the motor to be discharged through the output port, the inner tube of the inner wall is fixed through the supporting shell, the inner tube is connected with the pump body through the sealing gasket to perform sealing operation, the bearing II is arranged in the inner tube far away from the bearing I, the bearing II is sleeved on the outer surface of the output shaft, and a strong supporting force is provided for the output shaft, and meanwhile, good sealing performance is provided.

Description

A self-sealing structure for a steam turbine condensate pump

Technical Field

The utility model relates to the technical field of condensate pump self-sealing, in particular to a steam turbine condensate pump self-sealing structure.

Background Art

The condensate pump is one of the most important auxiliary machines in power generation enterprises. After the steam does work in the steam turbine, it is discharged to the condenser for cooling and becomes condensate, which is then transported out by the condensate pump and returned to the boiler for recycling after being heated by the condensate system and the water supply system.

However, in the prior art, such as Chinese patent number CN201821774793.2, in particular, a self-sealing structure of a steam turbine condensate pump includes a condenser, a condensate pump and a boiler, wherein an inlet main pipe is connected between the condensate pump and the condenser, an outlet main pipe is connected between the condensate pump and the boiler, a sealing assembly is provided at the shaft end of the condensate pump, a sealing water pipe is connected between the outlet main pipe and the shaft end of the condensate pump, the sealing water pipe is a metal hose, and the sealing water pipe is detachably connected to the outlet main pipe, and a valve is provided on the outlet main pipe. This scheme is used for the self-sealing of the condensate pump, aiming to prevent the self-sealing water pipe from breaking, thereby ensuring the stable operation of the condensate pump and extending its operation cycle.

However, the prior art has the following disadvantages when used: currently, the mechanical sealing devices of some condensate pumps adopt single-end mechanical seals and packing seals, which are prone to wear when used for a long time, thereby affecting the normal use effect. Therefore, it is necessary to propose a condensate pump with good self-sealing performance and easy to use.

Utility Model Content

The purpose of the utility model is to solve the problem in the prior art that the mechanical sealing device of some condensate pumps currently adopts a single-end mechanical seal and a packing seal, which is prone to wear when used for a long time, thereby affecting the normal use effect. Therefore, it is necessary to propose a condensate pump with good self-sealing performance and easy to use.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a self-sealing structure of a steam turbine condensate pump, comprising: a motor; an output shaft, fixedly mounted on the surface of the output end of the motor, and an impeller movably mounted on the outer surface of one end of the output shaft; and further comprising:

A bearing 1 is movably mounted on the outer surface of the output shaft, a support shell is fixedly mounted on the outer surface of the bearing 1, and bolts are movably embedded at four corners of the support shell away from the motor surface;

The pump body is movably mounted on the outer surfaces of the plurality of bolts, and an output port is provided on a surface of the pump body which is away from the motor.

Preferably, an access port is provided on the top surface of the pump body, and an inner tube is fixedly mounted on the inner wall of the supporting shell away from the motor.

Preferably, a sealing ring is fixedly installed inside the center of the inner tube, and the sealing ring is movably sleeved on the outer surface of the output shaft.

Preferably, a second bearing is fixedly mounted on the inner tube away from the interior of the motor, and the second bearing is movably sleeved on the outer surface of the output shaft.

Preferably, a sealing gasket is movably connected to a surface of the bearing 2 on a side away from the inner tube.

Preferably, a surface of one side of the sealing gasket away from the inner tube is movably connected to the outer surface of the pump body, and the sealing gasket is movably sleeved on the outer surface of the output shaft.

Preferably, a plurality of through holes are formed on one side surface of the inner tube.

Preferably, a ventilation groove is provided on a surface of one side of the support shell close to the through hole.

Compared with the prior art, the advantages and positive effects of the utility model are:

1. The output shaft is assembled on the surface of the motor manually, and the bearing 1 is movably embedded and installed on the outer surface of the output shaft manually, so as to fix the supporting shell on the outer surface, and is connected to the surface of the pump body manually using multiple bolts. When the flow is connected from the access port, the motor works to drive the impeller on the surface of the output shaft to rotate, and the flow is discharged through the output port. At the same time, the inner tube of the inner wall is fixed by the supporting shell, and the inner tube and the pump body are connected by a sealing gasket to perform sealing work. At the same time, a bearing 2 is installed inside the inner tube away from the bearing 1, and the bearing 2 is set on the outer surface of the output shaft to provide a strong support force for the output shaft and provide good sealing performance.

2. A sealing ring is installed inside the inner tube, and the sealing ring is movably sleeved on the outer surface of the output shaft to provide secondary sealing and improve the sealing effect. At the same time, a through hole is opened on the surface of the inner tube, and a ventilation groove is opened on the surface of the supporting shell to dissipate heat inside and prevent high temperature generated by friction during long-term work, thereby affecting the service life of internal parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic top view of a self-sealing structure of a steam turbine condensate pump provided by the utility model;

FIG2 is a side view schematic diagram of a self-sealing structure of a steam turbine condensate pump provided by the utility model;

FIG3 is a partial cross-sectional structural schematic diagram of a self-sealing structure of a steam turbine condensate pump provided by the utility model;

FIG4 is an enlarged structural schematic diagram of a turbine condensate pump self-sealing structure provided by the utility model at point A. FIG.

Legend:

1. Motor; 101. Output shaft; 102. Impeller; 103. Support casing; 104. Bolt; 105. Bearing 1; 106. Inner tube; 107. Bearing 2; 108. Sealing gasket; 109. Through hole; 110. Sealing ring; 111. Ventilation slot; 2. Pump body; 201. Inlet; 202. Output port.

DETAILED DESCRIPTION

In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

Embodiment 1, as shown in Figures 1-4, the utility model provides a self-sealing structure of a steam turbine condensate pump, comprising: a motor 1; an output shaft 101, fixedly mounted on the surface of the output end of the motor 1, and an impeller 102 is movably mounted on the outer surface of one end of the output shaft 101; further comprising: a bearing 105, movably mounted on the outer surface of the output shaft 101, and a support shell 103 is fixedly mounted on the outer surface of the bearing 105, and bolts 104 are movably embedded at the four corners of the support shell 103 away from the surface of the motor 1; a pump body 2, movably mounted on the outer surface of multiple bolts 104, and an output port 202 is provided on the surface of the pump body 2 on one side away from the motor 1.

In this embodiment, the output shaft 101 is manually assembled on the surface of the motor 1, and the bearing 105 is manually movably embedded and installed on the outer surface of the output shaft 101, so as to fix the support shell 103 on the outer surface, and is manually connected to the surface of the pump body 2 using multiple bolts 104. When the flow is connected through the inlet 201, the motor 1 works to drive the impeller 102 on the surface of the output shaft 101 to rotate, and the flow is discharged through the output port 202. At the same time, the inner tube 106 of the inner wall is fixed by the support shell 103, and the inner tube 106 is connected to the pump body 2 by a sealing gasket 108 for sealing. At the same time, a bearing 107 is installed inside the inner tube 106 away from the bearing 105, and the bearing 107 is sleeved on the outer surface of the output shaft 101, providing a strong support force for the output shaft 101 and providing good sealing performance.

Embodiment 2, an access port 201 is provided on the top surface of the pump body 2, an inner tube 106 is fixedly installed on the inner wall of the supporting shell 103 away from the motor 1, a sealing ring 110 is fixedly installed inside the center of the inner tube 106, and the sealing ring 110 is movably sleeved on the outer surface of the output shaft 101, a bearing 2 107 is fixedly installed inside the inner tube 106 away from the motor 1, the bearing 2 107 is movably sleeved on the outer surface of the output shaft 101, a side surface of the bearing 2 107 away from the inner tube 106 is movably connected with a sealing gasket 108, a side surface of the sealing gasket 108 away from the inner tube 106 is movably connected to the outer surface of the pump body 2, the sealing gasket 108 is movably sleeved on the outer surface of the output shaft 101, a plurality of through holes 109 are provided on one side surface of the inner tube 106, and a ventilation groove 111 is provided on the side surface of the supporting shell 103 close to the through holes 109.

In this embodiment, a sealing ring 110 is installed inside the inner tube 106, and the sealing ring 110 is movably sleeved on the outer surface of the output shaft 101 to provide secondary sealing and improve the sealing effect. At the same time, a through hole 109 is opened on the surface of the inner tube 106, and a ventilation groove 111 is opened on the surface of the supporting shell 103 to dissipate heat inside and prevent high temperature generated by friction during long-term operation, thereby affecting the service life of internal parts.

Working principle: The output shaft 101 is assembled on the surface of the motor 1 manually, and the bearing 105 is manually embedded and installed on the outer surface of the output shaft 101, thereby fixing the support shell 103 on the outer surface, and connecting it to the surface of the pump body 2 manually using multiple bolts 104. When the flow is connected to the inlet 201, the motor 1 works to drive the impeller 102 on the surface of the output shaft 101 to rotate, and the flow is discharged through the output port 202. At the same time, the inner tube 106 on the inner wall is fixed by the support shell 103, and the inner tube 106 is connected to the pump body 2 through the sealing gasket 108 for sealing. At the same time, the inner tube 106 is connected to the pump body 2 through the sealing gasket 108 for sealing. A second bearing 107 is installed inside the bearing 105 away from the first bearing 105. The second bearing 107 is sleeved on the outer surface of the output shaft 101 to provide a strong support force for the output shaft 101 and provide good sealing performance. At the same time, a sealing ring 110 is installed inside the inner tube 106. The sealing ring 110 is movably sleeved on the outer surface of the output shaft 101 to provide secondary sealing work and improve the sealing effect. At the same time, a through hole 109 is opened on the surface of the inner tube 106, and a ventilation groove 111 is opened on the surface of the supporting shell 103 to dissipate heat inside to prevent high temperature generated due to friction during long-term operation, thereby affecting the service life of internal parts.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (8)

1. A turbine condensate pump self-sealing structure comprising: an electric motor (1); the output shaft (101) is fixedly arranged on the surface of the output end of the motor (1), and an impeller (102) is movably arranged on the outer surface of one end of the output shaft (101); characterized by further comprising:

The first bearing (105) is movably arranged on the outer surface of the output shaft (101), a supporting shell (103) is fixedly arranged on the outer surface of the first bearing (105), and bolts (104) are movably embedded at four corners of the supporting shell (103) far away from the surface of the motor (1);

The pump body (2) is movably mounted on the outer surfaces of the bolts (104), and an output port (202) is formed in the surface, far away from the motor (1), of one side of the pump body (2).

2. The turbine condensate pump self-sealing structure of claim 1, wherein: an access port (201) is formed in the top surface of the pump body (2), and an inner pipe (106) is fixedly arranged on the inner wall of the supporting shell (103) far away from the motor (1).

3. The turbine condensate pump self-sealing structure of claim 2, wherein: and a sealing ring (110) is fixedly arranged in the center of the inner tube (106), and the sealing ring (110) is movably sleeved on the outer surface of the output shaft (101).

4. A turbine condensate pump self-sealing structure according to claim 3, wherein: the inner tube (106) is far away from the inside of the motor (1) and is fixedly provided with a second bearing (107), and the second bearing (107) is movably sleeved on the outer surface of the output shaft (101).

5. The turbine condensate pump self-sealing structure as claimed in claim 4, wherein: and a sealing gasket (108) is movably connected to the surface of one side of the second bearing (107) away from the inner tube (106).

6. The turbine condensate pump self-sealing structure of claim 5, wherein: one side surface of the sealing gasket (108), which is far away from the inner tube (106), is movably connected to the outer surface of the pump body (2), and the sealing gasket (108) is movably sleeved on the outer surface of the output shaft (101).

7. The turbine condensate pump self-sealing structure of claim 6, wherein: a plurality of through holes (109) are formed in one side surface of the inner tube (106).

8. The turbine condensate pump self-sealing structure of claim 1, wherein: a ventilation groove (111) is formed in the surface, close to the through hole (109), of the support shell (103).