KR101837404B1 - Apparatus for controlling performance of turbopump - Google Patents

Abstract

The present invention relates to an apparatus to control performance of a turbo pump, to control a flow rate of air flowing to the turbo pump. According to the present invention, the apparatus comprises: a turbo pump casing forming an inner space, and including an air inlet formed on one side to receive air through a plurality of through-holes and a hydraulic pressure branch pipe formed on the other side; a cylinder part including a receiving space formed to receive a pressure coming through the hydraulic pressure branch pipe, and a spring mounted on one side of the receiving space and contracted or expanded in accordance with the hydraulic pressure; and a piston part connecting one end to the spring and mounted to be able to move by elastic deformation of the spring with respect to the casing. The piston part includes a header, which is formed close to the air inlet to be overlapped with at least part of the through-holes so as to decrease the flow rate of air when the spring is contracted and to be spaced apart from the through-holes so as to increase the flow rate of air when the spring is expanded, thereby always maintaining balance between output by the turbo pump and the flow rate of air, and performing mechanical control to constantly maintain the output of the turbo pump.

Description

[0001] APPARATUS FOR CONTROLLING PERFORMANCE OF TURBOPUMP [0002]

The present invention relates to a turbo pump performance control apparatus for improving the performance of a turbo pump and controlling an output thereof.

A typical turbomachine includes a turbine supplied with high-pressure gas, a pump driven by the turbine, and a pipe disposed downstream of the turbine to discharge the gas. Particularly, a device called a turbo pump among turbo machines is mainly used for supplying a propellant to a combustion chamber of a rocket engine.

Conventionally, in the case of the above-mentioned turbomachine, a variable guide vane is mainly used for improving the output and adjusting the output. Also, in the case of a turbo pump requiring output control, a valve capable of controlling the amount of air flowing into the turbo pump is provided.

However, performance control devices such as variable vanes or valves must have an electronic control device. The addition of various additional devices, such as power and circuitry for implementing electronic circuits and servo motors for control, complicates the entire system and increases the risk of failure.

Therefore, the present invention proposes a turbo pump performance control system implemented as a mechanical device. The system is simple in structure and has a few additional devices for application to the turbo pump system and can be designed with a small system volume.

It is an object of the present invention to provide a turbo pump performance control apparatus capable of controlling an amount of air flowing into the turbo pump according to an output value of the turbo pump and ultimately controlling the output of the turbo pump.

According to an aspect of the present invention, there is provided a turbo pump performance control apparatus for controlling an inflow amount of air flowing into a turbo pump, the apparatus comprising: a plurality of through holes A turbo pump casing including an air inlet port through which air enters and a hydraulic branch pipe formed at the other side; a housing space formed to receive the hydraulic pressure received through the hydraulic branching section; And a piston portion which is connected to the spring and which is mounted so as to be able to move relative to the casing by elastic deformation of the spring, wherein the piston portion is in contact with the shrunk deformation The air flow rate is increased by overlapping at least a part of the through holes, The spring is spaced apart from said through hole when inflated modified to implement a turbo pump capacity control device comprising a header that is to decrease the air flow, and formed adjacent said air inlet.

In one embodiment of the present invention, the piston portion includes an end portion connected to the spring and a connecting portion integrally formed with the header, the connecting portion being disposed between the one end portion and the header so as to face each other, The oil pressure of the space and the position of the piston portion can be determined by the spring.

In an embodiment of the present invention, the cylinder portion may connect the piston portion and the spring, and guide the relative movement of the connection portion.

In one embodiment of the present invention, the regulator is disposed in one region of the hydraulic branch pipe, so that the specific hydraulic pressure is applied to the piston by controlling the hydraulic pressure transmitted to the cylinder.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, and the combination and use relationship.

The present invention includes a spring elastically deformed according to the output oil pressure of the turbo pump and a relatively moved piston portion so that the amount of air flowing into the inlet of the turbo pump can be controlled and ultimately the output of the turbo pump can be controlled.

The present invention includes a hydraulic bifurcation formed so that the output oil pressure of the turbo pump is transmitted to the turbo pump performance control device and a regulator disposed in the hydraulic bifurcation, so that the output pressure of the turbo pump is set in advance, If it occurs, it can be made to output low power.

In addition, it is possible to prevent the piping damage and the related parts from being damaged due to the output of the turbo pump more than necessary, thereby protecting the system and improving the performance of the engine.

Further, the present invention proposes a turbo pump performance control device that relies on the mechanical device of the present invention, which has a simple structure and requires only a few additional devices for application to a turbo pump system and can be designed with a small system volume . This reduces the risk of system failure and increases the reliability of the system.

1 is a view showing a conventional turbo pump system and an electronic control device for controlling the performance of the turbo pump.
2 is a perspective view of a turbo pump performance control apparatus according to an embodiment of the present invention.
FIG. 3 is a view of the turbo pump performance adjusting apparatus shown in FIG. 2 viewed from different directions.

Hereinafter, preferred embodiments of the turbo pump performance control apparatus according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well as other elements, The terms "part," " module, "and the like denote a unit for processing at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

1 is a view showing a conventional turbo pump system and an electronic control device for controlling the performance of the turbo pump. In the conventional system for controlling the output of the turbomachine, it is necessary to provide an electronic control device in order to realize performance improvement and output control of the turbomachine. Therefore, the power and circuit configuration for implementing the electronic circuit, Servo motors, and other additional devices have been added to the system to increase the complexity and risk of failure.

The present invention proposes a turbo pump performance regulating device 200 which solely depends on a mechanical device without requiring the electronic control device, that is, the control panel.

The turbo pump (not shown) consists largely of a rotor and a pump connected to the same axis as the rotor. The turbo pump performance control device 200 is disposed adjacent to the turbo pump and controls the output of the turbo pump.

Hereinafter, the configuration and structure of the turbo pump performance control apparatus 200 will be described with reference to FIGS. 2 and 3, respectively.

FIG. 2 is a perspective view of a turbo pump performance control apparatus 200 according to an embodiment of the present invention, and FIG. 3 is a perspective view of the turbo pump performance control apparatus 200 viewed from different directions.

Referring to FIG. 2, the turbo pump performance control apparatus 200 includes a turbo pump casing 210 forming an outer appearance of the turbo pump performance regulating apparatus 200, an inner space formed by the turbo pump casing 210, And a piston unit 230 connected to the cylinder unit 220 and mounted to the turbo pump casing 210 to be movable relative to the cylinder unit 220.

The turbo pump casing 210 is an internal space in which various mechanical parts are disposed. The turbo pump casing 210 may include an air inlet 211 formed at one side and a hydraulic branch pipe 212 formed at the other side.

Also, the internal space may be a space for flowing the air so that a predetermined amount of air can flow in from the outside to the turbo pump, and the hydraulic pressure discharged from the outlet of the turbo pump is transmitted to the internal space And can have a predetermined size and volume to be accommodated for a period of time.

The air inlet 211 may include a through hole 211a and external air may flow into the turbo pump casing 210 through the through hole 211a.

The air introduced into the turbo pump casing 210 is accelerated through a nozzle 250 described later.

Generally, the amount of air entering the turbo pump is closely related to the output value of the turbo pump. As the air amount increases, the output value of the turbo pump (the pressure state at the outlet) increases, and the smaller the amount of air, the smaller the output value of the turbo pump. Accordingly, the present invention proposes a turbo pump performance control device 200 for controlling the amount of air entering the turbo pump to control the output of the turbo pump.

The hydraulic branch pipe (212) is formed on the other side of the turbo pump casing (210) so as to be spaced apart from the air inlet (211). That is, the hydraulic branch pipe 212 is formed to be spatially separated from the air entering from the air inlet 211.

Unlike the air inlet 211, the hydraulic branch pipe 212 is connected to the turbo pump casing 210 to transmit an output oil pressure indicative of an output value of the turbo pump. That is, the hydraulic branch pipe 212 directly connects the turbo pump performance control device 200 and the turbo pump.

The hydraulic pressure discharged from the outlet of the turbo pump is transmitted to the inner space of the turbo pump performance control device 200 through the hydraulic branch pipe 212. The hydraulic pressure refers to the outlet pressure of the turbo pump and correlates with the output of the turbo pump. The higher the output of the turbo pump is, the higher the oil pressure is, and the lower the output of the turbo pump is, the lower the oil pressure is. The high and low hydraulic pressures transmitted to the turbo pump performance control device 200 are determined according to the output state of the turbo pump.

Accordingly, when the output pressure of the turbo pump is excessively excessive, the turbo pump performance control device 200 can reduce the amount of air entering from the air inlet 211 by a movement mechanism of the piston 230, which will be described later, The output value of the turbo pump is adjusted.

2, the cylinder 220 includes a receiving space 221 formed to receive the hydraulic pressure received through the hydraulic branch 212 and a spring 222 mounted on one side of the receiving space .

The cylinder part 220 is disposed in the inner space of the turbo pump casing 210. The cylinder part 220 according to an embodiment of the present invention is disposed at the center of the inner space.

The accommodation space 221 may occupy at least a part of the internal space of the cylinder part 220. The spring 222 may be contracted or expanded depending on the degree of the hydraulic pressure, and is disposed outside the space occupied by the accommodation space 221 among the internal spaces of the cylinder 220.

The accommodation space 221 and the spring 222 divide the internal space of the cylinder 220 and the hydraulic pressure transmitted to the accommodation space 221 is relatively higher than the compression force of the spring 221. [ The volume of the accommodating space 221 is expanded, while the spring 222 is elastically deformed in the direction of contracting by the pressure applied by the accommodating space 221.

When the hydraulic pressure transmitted to the accommodation space 221 is relatively lower than the compression force of the spring, the volume of the accommodation space 221 is reduced, while the spring 222 is directed toward the accommodation space 221 And is elastically deformed.

There is no limitation on the rigidity of the spring 220, but the spring having an appropriate rigidity can be selectively used according to the output control range of the turbo pump.

2, the piston 230 includes an end portion 231 connected to one side of the spring 220, a connecting portion 233 formed integrally with the end portion 231, And a header 232 formed integrally with the first end 233 and facing the first end 231 with the connecting portion 233 interposed therebetween.

The piston 230 is connected to the spring 222 and is mounted to the turbo pump casing 210 in a manner that is relatively movable according to the elastic deformation of the spring 222.

In order for the piston 230 to be connected to the spring 222 and move together, at least a portion of the piston 230 should be disposed in the interior space of the cylinder 220 in which the spring 222 is disposed .

More specifically, one end portion 231 of the piston portion 230 is coupled to one side of the spring 222, and the one end portion 231 and the one end portion 231 At least a part of the connection portion 233 is disposed in the accommodation space 221. The internal space of the cylinder 220 can be substantially divided into the space in which the accommodating space 221 and the spring 222 are disposed due to the arrangement of the one end portion 231.

The header 232 is disposed adjacent to the air inlet 211 to adjust the amount of air entering from the air inlet 211.

Hereinafter, with reference to FIGS. 2 and 3, the mechanism of the piston 230, which is moved in accordance with the elastic deformation of the spring 222, will be described in more detail.

3, the thick arrow A indicates the moving direction of air entering from the air inlet 211 and the soft arrow B indicates the moving direction of the hydraulic oil flowing through the hydraulic pipe 212 .

When the hydraulic pressure entering the accommodation space 221, that is, the output of the turbo pump is high, the volume of the accommodation space 221 expands and the spring 222 contracts. Accordingly, the piston 230 connected to the spring 222 is moved in a direction D1 in which the spring 222 is contracted, and the header 232 is moved in a direction And is moved to overlap with at least a part of the through holes 211a.

Accordingly, the area of the passage area of the through holes 211a connected to the tappo pump internal passage is reduced, so that the amount of air entering the turbo pump casing 210 is reduced. As the amount of air decreases, the amount of air entering the turbo pump decreases, and ultimately the output value of the turbo pump decreases.

On the other hand, when the hydraulic pressure entering the accommodation space 221, that is, the output of the turbo pump is low, the volume of the accommodation space 221 is reduced and the spring 222 is expanded and deformed. The piston 232 connected to the spring 222 is moved in a direction D2 in which the spring 222 expands and the header 232 is moved in the air inlet 211 And is moved away from the through holes 211a.

The position of the piston 231 is determined by the force of the hydraulic pressure acting on the area of the one end 231 of the piston 230 disposed in the accommodation space 221 and the elastic deformation of the spring 222 It is a point of balance of power. That is, the position of the one end 231 of the piston 230 is determined by the hydraulic pressure and the spring 222, and the header of the piston 230 connected to the one end 231 in an I- 232 are determined passively.

Accordingly, when the area of the through holes 211a exposed to the outside increases, the amount of air entering the turbo pump casing 210 increases. As the amount of air increases, the amount of air flowing into the turbo pump increases, and ultimately, the output value of the turbo pump increases.

Conversely, when the area of the through holes 211a exposed to the outside is reduced, the amount of air entering the turbo pump casing 210 is reduced. As the amount of air decreases, the air flow rate into the turbo pump decreases, and ultimately the output value of the turbo pump decreases.

According to this structure, the amount of air flowing into the inlet of the turbo pump can be adjusted by the elastic deformation of the spring 222 and the relative movement of the piston 230, and ultimately, the output of the turbo pump Can be controlled.

2 and 3, the turbo pump performance control apparatus 200 according to an embodiment of the present invention includes a turbo pump casing 210 and a guide (not shown) And a nozzle (250) disposed adjacent to one end of the turbo pump casing (210).

The guide part 213 may include first and second guide parts (not shown) symmetrically formed around the connecting part 233. The first guide portion may extend from a first point adjacent to the connecting portion 233 to a second point adjacent to one end of the turbo pump casing 210.

The guide part 213 may guide the flow of the air so that the air coming from the air inlet 211 can be moved toward the nozzle 250 together with the structure of the turbo pump casing 210.

The nozzle 250 is disposed on one side of the guide portion to accelerate the air. The nozzle 250 may be coupled to both ends of the turbo pump casing 210. At one end of the both ends adjacent to the hydraulic branch pipe 212, the nozzle 250 May not be disposed.

The cylinder portion 220 may include a region 223 formed to surround at least a part of the connection portion and may be disposed in a space other than a region occupied by the connection portion 233 of the one region 223 And may further include a plurality of chambers 224. The plurality of chambers 224 prevent the hydraulic fluid from leaking due to the formation of the spacing spaces.

The first chamber 225 mounted on the one end 231 of the piston 230 prevents the pressure of the spring 222 from being affected by the hydraulic pressure through the accommodation space 221, .

The second chamber 226 mounted on the head 232 of the piston 230 is configured such that external air existing outside the turbo pump casing 210 flows through the through hole 211 formed in the air inlet 211 211a so that air can be directly introduced into the upper and lower portions of the head 232 so that the air can be introduced into the turbo pump casing 210 only through the nozzles 211a.

The plurality of chambers 224, the first chamber 225 and the second chamber 226 constrain the movement of the piston 230. More specifically, the piston 223, which is formed in an I- 230 are movable only in the axial direction of the connecting portion 233 and the radial movement is limited by the plurality of chambers 224, the first chamber 225 and the second chamber 226 .

Referring to FIG. 2, the turbo pump performance control apparatus 200 according to an embodiment of the present invention may further include a regulator 240 configured to apply a specific hydraulic pressure to the piston 230.

The regulator 240 is disposed in one region of the hydraulic branch pipe 212 and controls a hydraulic pressure transmitted to the cylinder 220 so that a specific hydraulic pressure acts on the piston 230.

In the present invention, the regulator (240) is disposed in one region of the hydraulic branch pipe (212) so that the output pressure of the turbo pump is set in advance and a low output is produced when the output is generated further.

According to the structure of the present invention described above, it is possible to prevent damage to piping and related parts caused by the output of the turbo pump more than necessary, thereby protecting the entire system and improving the performance of the engine.

Further, the present invention proposes a turbo pump performance control device 200 that is dependent on the mechanical device of the present invention, which has a simple structure and requires few additional devices for application to the turbo pump, .

This simple device also has the advantage of lowering the risk of failure and enhancing the reliability of the device.

Therefore, when the air flow rate is increased, the pressure of the output oil pressure by the turbo pump is increased and the spring is moved in the contraction direction to reduce the air amount. On the contrary, when the air flow rate is decreased, And moves in a direction in which the spring expands, thereby increasing the amount of air. That is, the present invention is characterized in that the output from the turbo pump and the air amount are always balanced, and the output of the turbo pump is mechanically controlled to be constant.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as belonging to the scope.

Claims (3)

A turbo pump performance control apparatus for controlling an amount of air flowing into a turbo pump,
A turbo pump casing forming an internal space and including an air inlet through which air enters through a plurality of through holes formed on one side and a hydraulic branch formed on the other side;
A cylinder portion including a receiving space formed to receive a hydraulic pressure coming in through the hydraulic branch pipe and a spring mounted on one side of the receiving space and having a contraction or expansion deformation according to the hydraulic pressure; And
And a piston portion which is connected to the spring at one end and which is mounted movably relative to the casing by elastic deformation of the spring,
Wherein the piston portion includes:
The spring is formed adjacent to the air inlet so as to overlap the at least a portion of the through holes when the spring is deformed to reduce the air flow rate and to increase the air flow rate when the spring is distanced from the through holes at the time of the expansion deformation Header; And
And a connection portion formed integrally with the one end portion and the header, mechanically connecting the spring and the header, and maintaining a balance of the piston portion,
The position of the piston is determined by the pressure of the spring and the hydraulic fluid in the accommodation space,
A plurality of chambers formed to surround at least a part of the connecting portion and disposed in a spaced-apart space between the cylinder portion and the connecting portion, and a first chamber mounted on the one end portion of the piston portion. Regulating device. The method according to claim 1,
And a second chamber disposed between the header and the inlet and mounted to the header. 3. The method of claim 2,
Further comprising a regulator disposed in one region of the hydraulic branch pipe and configured to control a hydraulic pressure transmitted to the cylinder so that a specific hydraulic pressure acts on the piston.

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