CN220081744U - Rotor assembly for turbo-pump and turbo-pump - Google Patents

Abstract

The utility model relates to the field of turbocharging equipment, and discloses a rotor assembly for a turbocharging pump and the turbocharging pump, which comprise a turbine impeller and a pump impeller which are coaxially connected with each other, wherein one of the turbine impeller and the pump impeller is provided with a taper shaft, and the other one of the turbine impeller and the pump impeller is provided with a taper hole matched with the taper shaft. In this scheme, through setting up the taper axle at one of turbine wheel and pump impeller, another one sets up the taper hole constitution rotor subassembly with taper axle looks adaptation with turbine wheel and pump impeller zonulae occludens, not only strengthened rotor running stability, the conical surface area of force is bigger moreover, and corresponding frictional resistance is bigger, and then has strengthened the antitorque ability of turbo booster pump.

Description

Rotor assembly for turbo-pump and turbo-pump

Technical Field

The utility model relates to the technical field of turbocharging equipment, in particular to a rotor assembly for a turbo-pump and the turbo-pump.

Background

In the chemical industry field, the turbo pump is used as a device capable of recovering the pressure energy of the liquid medium, and is suitable for a plurality of production process flows. The turbo pump is a tightly fitting, which uses hydraulic pressure to collect very high torque in a small space, and they can be controlled accurately despite the high power.

At present, a turbo pump usually utilizes a rotor to connect a turbine and a pump impeller, and utilizes high-pressure liquid with certain pressure to drive the turbine to rotate, so as to generate acting force on the rotor and drive the pump impeller connected with the rotor to realize supercharging of low-pressure liquid. At present, the rotor is usually connected by a rotating shaft, so that the running stability of the rotor of the turbo pump is poor and the torque transmissibility is weak.

Therefore, a corresponding solution is needed to solve the problems of poor running stability and weak torque transmissibility of the rotor of the turbo pump caused by the existing rotor connection mode.

Disclosure of Invention

The utility model aims to solve the problems of poor running stability and weak torque transmissibility of a turbo pump rotor caused by a rotor connection mode in the prior art.

In order to achieve the above object, an aspect of the present utility model provides a rotor assembly for a turbo-pump, comprising a turbine wheel and a pump wheel coaxially connected to each other, wherein one of the turbine wheel and the pump wheel is formed with a taper shaft, and the other is formed with a taper hole adapted to the taper shaft.

Preferably, the turbine wheel has a connecting portion extending toward the pump wheel in an axial direction, the taper hole is formed at the connecting portion, and the taper shaft is formed at an end of the pump wheel toward the turbine wheel.

Preferably, the tapered bore and the tapered shaft taper in an axial direction from the pump impeller to the turbine impeller.

Preferably, the taper hole is in interference fit with the taper shaft.

Preferably, a first threaded hole extending from an end face toward the turbine wheel is provided in the taper shaft, and the rotor assembly further includes a bolt screwed to the first threaded hole to coaxially connect the turbine wheel and the pump wheel as one body.

Preferably, the bolt is a socket head cap bolt, and the turbine wheel is formed with a counterbore for receiving a cylindrical head portion of the socket head cap bolt.

Preferably, a second threaded hole having the same inner diameter as the first threaded hole is formed in the connecting portion, and the bolt is screwed into and passes through the second threaded hole.

Preferably, one end of the turbine wheel, which is away from the pump wheel, is provided with a first coupling, one end of the pump wheel, which is away from the turbine wheel, is provided with a second coupling, the outer periphery of the first coupling is provided with a first inner concave part, and the outer periphery of the second coupling is provided with a second inner concave part.

Preferably, at least one of the turbine wheel and the pump wheel is formed with a screw hole, and the rotor assembly further includes a bolt passing through the other of the turbine wheel and the pump wheel and screwed to the screw hole to coaxially connect the turbine wheel and the pump wheel as one body.

A second aspect of the utility model provides a turbo-pump comprising a rotor assembly as described above for a turbo-pump.

Through above-mentioned technical scheme, the turbine booster pump that the conical surface that this disclosure provided is through setting up the taper axle at one of turbine impeller and pump impeller, and another sets up the taper hole that constitutes rotor subassembly with taper axle looks adaptation with turbine impeller and pump impeller zonulae occludens, has not only strengthened rotor running stability, and the conical surface area of force is bigger moreover, and corresponding frictional resistance is bigger, and then has strengthened turbine booster pump's antitorque ability.

Drawings

FIG. 1 is a schematic structural view of one implementation of a rotor assembly for a turbo-pump as disclosed in an example of the present disclosure;

figure 2 is a side view of the rotor assembly for the turbo pump of figure 1 assembled together.

Description of the reference numerals

1. Turbine wheel 2 pump impeller

3. 4 taper holes of connecting part

5. First threaded hole of taper shaft 6

7. Second threaded hole 8 threaded bottom hole

9. First coupling 10 second coupling

11. Bolt

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the embodiments described herein are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless otherwise indicated, directional terms such as "upper, lower, left, right, inner, outer" and the like are used to indicate an azimuth or a positional relationship based on that shown in the drawings, only for convenience of description of the present design and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present design.

In the description of the present design, it should be noted that, unless explicitly specified and limited otherwise, the terms "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this design will be understood by those of ordinary skill in the art in a specific context.

In order to solve the problems of poor running stability and weak torque transmissibility of a rotor of a turbo pump caused by a rotor connection manner in the prior art, an aspect of an embodiment of the present disclosure provides a rotor assembly for a turbo pump, which includes a turbine wheel 1 and a pump wheel 2 coaxially connected to each other, wherein one of the turbine wheel 1 and the pump wheel 2 is formed with a taper shaft 5, and the other is formed with a taper hole 4 adapted to the taper shaft 5. It can be understood that when the turbine impeller 1 is connected with the pump impeller 2, as one is formed with the taper shaft 5, the other is formed with the taper hole 4 matched with the taper shaft 5, the axial surface of the taper shaft 5 is tightly connected with the taper hole 4, so that the running stability of the rotor is enhanced, the bearing area of the conical surface is larger, the corresponding friction resistance is larger, and the torque resistance of the turbine booster pump is further enhanced.

Referring to fig. 1, the turbine impeller 1 has a connecting portion 3 extending toward the pump impeller 2 in the axial direction, a taper hole 4 is formed in the connecting portion 3, and a taper shaft 5 is formed at one end of the pump impeller 2 toward the turbine impeller 1. This is provided in order to ensure that a coaxial connection is achieved when the turbine wheel 1 and the pump wheel 2 are connected to the conical bore 4 via the conical shaft 5.

Further, the taper hole 4 and the taper shaft 5 taper in the axial direction from the pump impeller 2 to the turbine impeller 1. So set up, when carrying out the conical surface with turbine wheel 1 and pump impeller 2 through taper hole 4 and taper shaft 5 and be connected, compare in ordinary face of cylinder, the conical surface area of force is bigger, and corresponding frictional resistance is bigger, and then has strengthened the antitorque ability of turbo booster pump. Of course, in other embodiments, the connection surface between the taper hole 4 and the taper shaft 5 may be designed with appropriate roughness, and an appropriate friction factor is selected to increase friction resistance, so as to further improve the torque resistance of the turbo pump.

Further, the taper hole 4 is in interference fit with the taper shaft 5. By the arrangement, the connection between the taper hole 4 and the taper shaft 5 can be enhanced, and the turbine impeller and the pump impeller are prevented from loosening and falling off in the working process of the turbo pump.

Therein, according to some implementations of the disclosed embodiments, as shown in fig. 1 and 2, a first threaded hole 6 extending from an end face toward the turbine wheel 1 is provided in the taper shaft 5, and the rotor assembly further includes a bolt 11 screwed to the first threaded hole 6 to coaxially connect the turbine wheel 1 and the pump wheel 2 as one body. So arranged, the bolt 11 can coaxially connect the turbine wheel 1 and the pump wheel 2 by passing through the first threaded hole 6.

Further, the bolt 11 can be an inner hexagon bolt, and the installation is more convenient, and simultaneously the turbine impeller 1 is formed with the counter bore 8 that is used for holding the cylinder head of this inner hexagon bolt to pass through this hexagon bolt fastening connection with turbine impeller 1 and pump impeller 2, and through rather than matched with counter bore 8, make the nut of whole inner hexagon bolt can sink in the counter bore 8, not only increased the aesthetic property, be difficult for becoming flexible and droing because of the working operation moreover. Of course, in other embodiments, other types of bolts may be used, as long as the turbine wheel 1 and the pump wheel 2 are securely connected, and are not easily loosened and removed by the operation.

Meanwhile, as shown in fig. 1, a second screw hole 7 having the same inner diameter as the first screw hole 6 is formed in the connection portion 3, and a bolt 11 is screwed into and passes through the second screw hole 7. It will be appreciated that the second threaded hole 7 is communicated with the taper hole 4, and after the taper shaft 5 is in interference connection with the taper hole 4, the screw 11 can pass through the first bolt hole 6 and the second bolt hole 7 to further fasten and connect the turbine impeller 1 and the pump impeller 2.

Wherein, according to some implementations of the disclosed embodiments, referring to fig. 1 and 2, an end of the turbine wheel 1 facing away from the pump wheel 2 has a first coupling 9, an end of the pump wheel 2 facing away from the turbine wheel 1 has a second coupling 10, an outer periphery of the first coupling 9 is formed with a first inner recess, and an outer periphery of the second coupling 10 is formed with a second inner recess. It will be appreciated that the process medium flows in from the inner flow channel formed by the first recess on the turbine wheel 1 and out from the inner flow channel formed by the second recess on the pump wheel 2.

Wherein at least one of the turbine wheel 1 and the pump wheel 2 is formed with a threaded hole according to some implementations of the disclosed embodiments, the rotor assembly further comprises a bolt 11 passing through the other of the turbine wheel 1 and the pump wheel 2 and screwed to the threaded hole to coaxially connect the turbine wheel 1 and the pump wheel 2 as one body. It will be appreciated that if a threaded hole is formed in the turbine wheel 1, the screw 11 may be screwed to the threaded hole through the pump wheel 2 so as to coaxially connect the turbine wheel 1 and the pump wheel 2, that is, the arrangement of the threaded hole between the turbine wheel 1 and the pump wheel is not limited to that shown in fig. 1, and the screw 11 may be screwed to the turbine wheel through the pump wheel 2 as long as the turbine wheel 1 and the pump wheel 2 can be kept firmly connected.

A second aspect of embodiments of the present disclosure provides a turbo-pump comprising a rotor assembly as described above for a turbo-pump.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited thereto. The technical solution of the utility model can be subjected to a plurality of simple variants within the scope of the technical idea of the utility model. Including the various specific features being combined in any suitable manner. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.

Claims (6)

1. A rotor assembly for a turbo pump, comprising a turbo wheel (1) and a pump wheel (2) coaxially connected to each other, wherein the turbo wheel (1) has a connection portion (3) extending in an axial direction towards the pump wheel (2), the connection portion (3) being formed with a taper hole (4), an end of the pump wheel (2) facing the turbo wheel (1) being formed with a taper shaft (5);

a first threaded hole (6) extending from the end face facing the turbine impeller (1) is arranged in the conical shaft (5), and the rotor assembly further comprises a bolt (11) which is screwed to the first threaded hole (6) so as to coaxially connect the turbine impeller (1) and the pump impeller (2) into a whole;

the bolt (11) is a hexagon socket head cap bolt, and the turbine impeller (1) is provided with a counter bore (8) for accommodating the cylindrical head part of the hexagon socket head cap bolt.

2. Rotor assembly for a turbo-pump according to claim 1, characterized in that the cone hole (4) and the cone shaft (5) taper in the axial direction from the pump impeller (2) to the turbine impeller (1).

3. Rotor assembly for a turbo-pump according to claim 2, characterized in that the cone hole (4) is an interference fit with the cone shaft (5).

4. A rotor assembly for a turbo-pump according to claim 1, wherein a second screw hole (7) having the same inner diameter as the first screw hole (6) is formed in the connection portion (3), and the bolt (11) is screwed into and through the second screw hole (7).

5. A rotor assembly for a turbo-pump according to claim 1, characterized in that the end of the turbo-wheel (1) facing away from the pump wheel (2) has a first coupling (9), the end of the pump wheel (2) facing away from the turbo-wheel (1) has a second coupling (10), the outer periphery of the first coupling (9) is formed with a first recess, and the outer periphery of the second coupling (10) is formed with a second recess.

6. A turbo-pump comprising a rotor assembly for a turbo-pump according to any one of claims 1 to 5.