KR20070092841A - Hybrid jet turbine generation system having the synergy of increasing thermal efficiency - Google Patents

Abstract

A hybrid synergy jet turbine generation system is provided to maximize the efficiency of energy by allowing the working fluid introduced through a fluid passage and a fluid injection hole to pass through rotational bodies in multiple stages. In a hybrid synergy jet turbine generation system, a working fluid introduction pipe(3A) of a first axial flow type multi-stage turbine(3) constituting a first generation unit(2) is connected to a fluid discharge pipe(1A) of a pressure generating unit(1). A first generator(4) for converting the rotational force of an impeller shaft to generation power is connected to an impeller shaft(10) of the first axial flow type multi-stage turbine. A connecting pipe(6) connected to the working fluid discharge pipe(8B) of the first axial flow type multi-stage turbine is connected to a working fluid introduction pipe(8A) of a second axial flow type multi-stage turbine(8) constituting a second generation unit(7). The generation units are connected in series through the connecting pipe in a multi-stage manner.

Description

Hybrid jet turbine generation system having the synergy of increasing thermal efficiency

1 is a configuration diagram showing an application example of the present invention.

Figure 2 is a cross-sectional view showing the structure of a turbine applied to the present invention.

3 is an exploded perspective view of an impeller and an impeller housing applied to the turbine.

Figure 4 is an exemplary cross-sectional view of the main portion for explaining the operation of the impeller.

5 is a view showing a connection state of the nozzle hole and the fluid passage for guiding the movement of the working fluid.

Figure 6 is a perspective view showing the impeller structure of the existing turbine.

7 is an exemplary cross-sectional view of the main portion of FIG. 6.

<Description of the reference numerals for the main parts of the drawings>

1: pressure generating device 2: 1st power generation unit

3: first axial flow multistage turbine 3A: working fluid inlet pipe

3B: working fluid discharge pipe 4: first generator

6 connector 7 second power generation unit

8: 2nd Axial Flow Multistage Turbine 9: 2nd Generator

10 impeller shaft 20 rotating body

21: groove for reducing weight 22: fluid passage

22A: first passage part 22B: second passage part

30 impeller housing 31 fluid injection hole

40: fluid supply nozzle plate 41: fluid spray hole

50, 50 ': bearing case 51: fluid inlet pipe

52: fluid discharge pipe 53: fluid receiving space

The present invention relates to a hybrid synergy jet turbine power generation system using an axial multistage turbine, and more specifically, to a working fluid generated from a pressure generating device such as a high pressure steam or a hydraulic system by a compressed air or a boiler system through a compressor. In a power generation system using a known turbine in which a power generation unit consisting of an axial multistage turbine and a generator is connected to a pressure generating device for use as operating energy, the power is discharged to a working fluid discharge pipe after being used for rotating the impeller of the turbine. It is a pressure generator that improves the structure of a multistage turbine while continuously connecting a plurality of power generation units in series through a connection pipe connected to a working fluid discharge pipe of a turbine so that the fluid can be recycled as a secondary power generation power. Continuously add multiple power generation units simultaneously It is possible to greatly increase the total power generation that can be obtained, as well as to maximize the working efficiency of the working fluid, and to increase the turbine capacity without increasing the rotational torque and the turbine capacity according to the turbine capacity. It is possible to make it possible.

In general, in order to generate electricity from a thermal power plant or a nuclear power plant to a steam turbine, it is evaluated that the steam pressure should be increased from a low pressure of 30 Kg / cm 2 to a high pressure of 100 Kg / cm 2 or more to produce electricity by rotating power of the turbine.

However, the existing turbine has low efficiency due to high waste of fluid because impeller is composed of wing type, but it is expensive to manufacture due to streamlined wing processing and wheel balancing difficulties and maintenance due to frequent failure of wing damage. It is difficult to apply to the cogeneration plant because of the high cost of management and operation.

Therefore, small and medium-sized boilers, which are mostly used in general plants, can generate low pressure steam of 15Kg / ㎠ or less, so there is no economical power to generate electricity with existing expensive turbines, and the energy of low pressure steam produced is used as kinetic energy. It simply does not use energy efficiently because it uses only the heat of steam.

On the other hand, a power generation unit consisting of an axial flow type multi-stage turbine and a generator is connected to the pressure generator so that the working fluid generated from the pressure generator such as compressed air through a compressor, high pressure steam from a boiler system, or hydraulic system can be used as operating energy. A power generation system using a known turbine to be installed is known, but this is a structure in which a single number of power generation units connected to the pressure generating device is constituted so that it is difficult to fully utilize the pressure energy of steam generated, and thus cannot be used for driving the turbine. There is a structural problem in that a lot of energy causes waste of energy and thus a small generation.

Meanwhile, the turbine applied to the existing power generation system as described above has an impeller structure as shown in FIGS. 6 to 7, thereby exposing the following problems.

The fluid inlet 61 is drilled at an inclination angle of 45 ° with respect to the surface of the disc hole wheel 60 as shown in FIG. 7, and injects fluid at an angle of 90 ° with respect to the inflow surface of the fluid inlet 61. Since the gas is dispersed in all directions and part of the fluid is guided to the fluid inlet to generate the rotational torque, the other part is distributed to the outside.

In addition, in the related art, since the impeller is composed of a plurality of disk through-wheels 60 overlapping with each other as shown in FIG. 6, the impeller maintains the same thickness up to an unnecessary portion, and thus has an excessive weight as a whole. There is a problem that the loss of the rotation torque is large,

And since the impeller is composed of a single body and the fluid inlet 61 is configured to penetrate through one hole, the residence time of the inflowed fluid is short and quickly exits. The friction with the impeller is small, the efficiency of use of energy is low,

In addition, since the impeller housing is composed of a single cylinder of a certain standard, when increasing the capacity of the turbine, if the disc through-wheel 60 is added, the thickness of the impeller is simply increased, but the housing is made according to the capacity of the turbine. Since it has to be replaced with a having a problem that requires a separate mold production for the production of the housing.

Therefore, the present invention has been made to solve the problems caused by the existing structure as described above, the object of the present invention can be obtained by being able to continuously operate a plurality of power generation units simultaneously using one pressure generating device A hybrid that can greatly increase the total amount of power that can be produced, as well as maximize the use efficiency of the energy of the working fluid, increase the rotational torque, and increase the capacity of the turbine without the manufacture of each mold depending on the capacity of the turbine. It is to provide a synergy jet turbine power generation system.

In order to achieve the above object, the present invention uses a connection pipe connected to the working fluid discharge pipe of the turbine so that the working fluid discharged to the working fluid discharge pipe after being used for the impeller rotation of the turbine can be recycled as secondary power generation It is an improvement of the structure of a multistage turbine at the same time by connecting a number of power generation units in series.

Hereinafter, the configuration of the present invention in detail based on the accompanying drawings.

1 is a configuration diagram showing an example of the application of the present invention, Figure 2 is a cross-sectional view showing the structure of the turbine to be applied to the present invention, Figure 3 is an exploded perspective view of the impeller and the impeller housing applied to the turbine.

The power generation system of the present invention includes a first axial flow type multistage turbine (3) constituting a first power generation unit (2) in a fluid discharge pipe (1A) of a pressure generating device (1), which may be composed of a compressor, a boiler system, or a hydraulic system. In the well-known power generation system connecting the working fluid inlet pipe (3A) of the 1) and the first generator (4) for converting the rotational force of the turbine into the generated power to the first axial flow multistage turbine (3),

A second axial flow multistage turbine constituting the second power generation unit 7 together with the second generator 9 a connecting pipe 6 connected to the working fluid discharge pipe 3B of the first axial flow multistage turbine 3. (8) to the working fluid inlet pipe (8A), but in the same way through the connecting pipe (6) to the working fluid discharge pipe (8B) of the second power generating unit (7) in series connection to the series After constructing the power generation unit, the working fluid discharged from the working fluid discharge pipe of each power generation unit can be recycled as the power generation power of the next power generation unit.

In addition, the axial multistage turbines 3 and 8 and the generators 4 and 9 in the respective stages applied to the power generation system of the present invention have the same structure, and the axial multistage turbines 3 and 8 are 2 to 5, which will be described in more detail with reference to the first power generation unit 2 for convenience of description.

 An impeller shaft 10 having one end connected to the first generator 4;

The first passage part 22A is integrally coupled to the impeller shaft 10 so as to be installed at the same time and provided with a weight reducing recess 21 at one side and formed at an edge orthogonal to the mounting surface at one side. And a plurality of fluid passages (22) formed of second passage portions (22B) formed to penetrate to the other side in a state where they are connected to the first passage portion (22A) at an angle of 45 [deg.]. A plurality of rotating bodies 20;

The second passage portion 22B includes a plurality of fluid injection holes 31 installed in a state of enclosing the outer edges of the respective rotating bodies 20 and operated in a position close to the second passage portion 22B on one side of an inner surface thereof. A plurality of impeller housings 30 provided with perforations in an orthogonal state;

A plurality of fluid ejection holes 41 which are coupled to and fixed to the impeller housing 30 of the first rotating part of the rotating body 20 and which are associated with the first passage part 22A at an edge thereof are operated first. A disk-shaped fluid supply nozzle plate 40 having a hole at a 45 ° angle with the passage portion 22A;

The fluid inlet pipe 51 and the fluid discharge pipe 52 are respectively provided and fixed to the fluid supply nozzle plate 40 and the impeller housing 30 located at the rear end and the fluid receiving space 53 therein. It is to include a set of bearing cases 50, 50 'each having a.

Referring to Figures 1 to 2 the operation of the present invention configured as described above in detail as follows.

The pressure generating device 1 applied to the power generation system of the present invention configured as shown in FIG. 1 is assumed to be a boiler system for convenience of description, and the working fluid generated therein is assumed to be steam of a constant pressure.

Although the power generation unit is illustrated in two stages in the drawing, this is only an example and may be configured in three or more stages as necessary.

Meanwhile, steam generated by the pressure generating device 1 flows into the working fluid inlet pipe 3A of the first axial flow multistage turbine 3 of the first power generation unit 2 through the fluid discharge pipe 1A. The impeller shaft 10, which is discharged and rotated through the working fluid discharge pipe 3B while rotating the impeller shaft 10 by operating the impeller installed in the driving unit, drives the first generator 4 connected thereto to use the rotational force as power generation. Will be

Steam discharged through the working fluid discharge pipe 3B of the first axial flow multistage turbine 3 passes through the connecting pipe 6 of the second axial flow multistage turbine 8 of the next second power generation unit 7. The impeller shaft 10, which is discharged and rotated through the working fluid discharge pipe 8B while rotating the impeller shaft 10 by operating the impeller installed therein in the same manner as the above-mentioned operation by flowing into the working fluid inlet pipe 8A, is connected thereto. The rotational force is used as power generation power by driving the connected second generator 9, and the steam discharged from the second power generation unit 7 flows into the next power generation unit and is used as power generation power in the same manner. The steam discharged from the power generation unit is supplied to the steam heat source that can utilize the heat of steam such as heating or preheating and finally used.

As described above, the present invention drives only one power generation unit with steam generated from a pressure generating device as described above, and is immediately discharged to the steam heat using place, thereby avoiding the use of steam pressure as the maximum power generation unit. By simultaneously operating a plurality of power generation units (2) and (7) connected in series at the same time, each power generation unit can be independently generated, so that the steam pressure can be used to produce the maximum amount of power without loss, thus maximizing steam use efficiency. It becomes possible to write.

On the other hand, as described above, the steam driving the power generation unit (2) (7) passes through the impeller shaft while passing through the first and second axial flow type multistage turbine (3) (8) constituting the power generation unit (2) (7). It will be described in more detail with reference to Figure 2 to rotate (10).

2 is a cross-sectional view showing the structure of a multi-stage turbine, the impeller shaft 10 is a plurality of rotors 20 are integrally installed and configured to be rotated at the same time to cover the rotor 20 individually Each impeller housing 30 and the bearing case 50, 50 'is fastened and fixed using a bolt or the like to be separated from each other when necessary.

First, steam of a predetermined pressure generated by the pressure generating device 1 is accommodated in the fluid receiving space 53 inside the bearing case 50 through the fluid inlet pipe 51, and the received steam is again contained in the fluid receiving space 53. Steam flows into and out of the inclined fluid injection hole 41 of the fluid supply nozzle plate 40 exposed in the fluid supply hole 22 of the rotating body 20 which is in close proximity to the fluid injection hole 41. In the process of entering the rotor rotates the rotating body 20 through the injection pressure and friction, and the steam discharged from the fluid passage 22 of the rotating body 20 is again inclined fluid injection hole of the impeller housing (50) 31) while entering and exiting the fluid passage 22 of the rotating body 20 located in the next step while rotating the rotating body 20 through pressure and friction as steam repeats the above operation. The other side bear in the state which passed the last rotor 20 At the same time as the discharge through the fluid discharge pipe 52 installed in the ring case 50 'is introduced into the next stage multi-stage turbine is also used to drive the impeller in the same manner.

On the other hand, the rotor 20 of each step is to obtain a more efficient and improved rotational force in the process of steam passing through the fluid passage 22 as described in more detail using FIG. 4 as follows.

Steam injected from the inclined fluid injection hole 41 of the fluid supply nozzle plate 40 is primarily pressurized to the first passage portion 22A of the fluid passage 22 in a state inclined at an angle of about 45 °. At the same time to generate a rotational torque, the rotating body 20 in contact with the steam is rotated in the spraying direction of the steam, and the steam contacted at an angle of 45 ° obliquely enters the first passage portion 22A without loss. It is possible to proceed to enter the first passage portion 22A, the steam enters into the second passage portion 22B bent at an angle of 45 ° from the first passage portion 22A to perform secondary pressurization and entry. The additional rotational force is added to the rotating body 20.

Therefore, the steam can be applied to the pressing force twice while passing through the one rotating body, so that the pressure of the steam can be converted to the maximum rotational force.

On the other hand, the rotating body 20 by reducing the thickness of the unnecessary portion through the weight reducing recess 21, it is possible to save the energy required for the initial drive can reduce the loss of the rotation torque Since the whole 20 is not attached to one but is composed of multiple stages, the residence time with the inflowing steam is extended, so that the energy of the steam can be efficiently used.

In addition, since the impeller housing 30 is composed of multiple stages that can be detached like the rotor 20, the rotor 20 and the impeller housing 30 can be simply manufactured according to the capacity of the turbine without making a mold according to the capacity of the turbine when necessary. ) Only need to install additional, so it can be convenient to change the standard.

In the above, one embodiment of the present invention has been described, but modifications and variations within the scope without departing from the technical spirit of the present invention by those skilled in the art belong to the scope of the present invention Of course.

As described above, the present invention can continuously operate a plurality of power generation units simultaneously using a single pressure generating device, thereby greatly increasing the total amount of power generation that can be obtained, and maximizing the use efficiency of the working fluid. Energy efficiency is achieved by allowing the working fluid introduced through the rotating body separated into multiple stages, the fluid passages perforated therein, and the fluid injection holes perforated in the impeller housing to be utilized as independent rotational power while passing through each stage in multiple stages. It is possible to maximize the increase of torque and increase the torque, and because the rotor and the impeller housing supporting it are separated and assembled at each stage, it is possible to increase the capacity of the turbine without making each mold according to the capacity of the turbine. It is a useful invention.

Claims (5)

Connect the working fluid inlet pipe of the first axial flow multistage turbine constituting the first power generation unit to the fluid discharge pipe of the pressure generating device, which may be composed of a compressor, a boiler system, or a hydraulic system, and then impeller shaft of the first axial flow multistage turbine. In the power generation system connected to the first generator for converting the rotational force of the impeller shaft into the generated power, The power generation unit is connected to the connection pipe connected to the working fluid discharge pipe of the first axial flow multi-stage turbine with the second generator to the working fluid inlet pipe of the second axial flow multi-stage turbine constituting the second power generation unit. Hybrid synergy jet turbine power generation system characterized in that the power unit is installed in series connected in series. The method of claim 1, The first and second axial flow multistage turbine An impeller shaft having one end connected to the first generator; A plurality of rotors integrally coupled to the impeller shaft to be installed at the same time and provided with a weight reduction recess on one side, and having a plurality of fluid passages perforated at equal intervals on the edge; A plurality of impeller housings installed to surround the outer edges of the respective rotating bodies and having a plurality of fluid injection holes perforated in a position adjacent to the second passage portion on one inner surface thereof; Disk-shaped fluid supply coupled to the impeller housing of the first rotating body of the rotating body and provided with a plurality of fluid injection holes perforated in a position adjacent to the first passage portion of the plurality of fluid passages at the edge A nozzle plate; And a set of bearing cases each coupled to and fixed to the fluid supply nozzle plate and the impeller housing positioned at the end of the fluid supply pipe and the fluid discharge pipe, respectively, and having a fluid receiving space therein. Hybrid Synergy Jet Turbine Generation System. The method of claim 2, The fluid passage and the first passage formed in a state orthogonal to the installation surface on one side, Hybrid synergy jet turbine power generation system characterized in that consisting of a second passage portion formed to penetrate to the other side in a state connected to the first passage portion at a 45 ° angle. The method of claim 2, And a fluid injection hole of the impeller housing is drilled in a state perpendicular to the second passage portion. The method of claim 2, The fluid injection hole of the fluid supply nozzle plate is a hybrid synergy jet turbine power generation system, characterized in that perforated at a 45 ° angle relative to the first passage.

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