KR102009836B1 - Turbine blade cleaning device for furnace power generator - Google Patents

Abstract

A blast furnace turbine blade cleaning apparatus is disclosed. Turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention is a rail connected to the inner casing of the turbine; Drive means installed to be movable along the rail; And according to the cumulative amount of dust disposed between the inner circumferential surface of the inner casing and the outer circumferential surface of the rail movably mounted through the drive means, attached to the fixed blade mounted to the inner casing through the rotating rod of the variable device, And a cleaning module for selectively spraying high pressure water on the fixed blade to remove the attached dust.

Description

Turbine blade cleaning device for blast furnace furnace power generation {TURBINE BLADE CLEANING DEVICE FOR FURNACE POWER GENERATOR}

The present invention relates to a turbine blade cleaning apparatus for blast furnace static pressure power generation, and more particularly, blast furnace static pressure to prevent the dust contained in the blast furnace gas attached to the blade in the turbine operated by the blast furnace gas to accumulate and accumulate. It relates to a turbine blade cleaning device for power generation.

The stationary power generation system refers to a system that generates electricity by using waste energy, which is a high-pressure gas generated from a furnace of a steel mill, and improves the productivity of the furnace for making pig iron and reduces fuel costs. Is increasing the pressure.

This energy has only been used to damp the gas so far, but has simply released most of it, allowing it to generate electricity by spinning the turbine with the expansion force when it returns to normal pressure at around 3 atm. By recycling the waste energy by the static pressure power generation, it is possible to save energy and reduce the cost. For this purpose, in general, the high-pressure blast furnace equipment uses blast furnace gas using high temperature and high pressure blast furnace gas discharged from the blast furnace. Stationary-pressure generators with turbines are installed to convert the energy stored in the plant into electricity.

Blast furnace gas (BFG) is a flue gas generated from blast furnaces in steel mills, and its composition is similar to that of coke-based fired gas. It also contains a large amount of dust. Although the calorific value is very low, it is recovered and used as a heat source in the factory, and is usually used as a fuel for heating coke ovens attached to the blast furnace.

For this stationary pressure power generation, the high-temperature, high-pressure blast furnace gas containing a large amount of dust, including dust, discharged from the upper part of the blast furnace is subjected to first dust removal in a dry dust collector, followed by secondary dust removal in a wet dust collector. Subsequently, after the shear pressure is controlled by the pressure control means connected to the stationary pressure controller, the secondary damped gas generates electric power by rotating the generator turbine, and is subsequently stored in the gas holder to be reused as fuel.

On the other hand, in the turbine used for the stationary power generation, a plurality of fixed blades are mounted on an inner casing through which blast furnace gas passes, and a plurality of rotating blades are mounted on a rotating shaft rotatably fixed in the inner casing, and guided by the fixed blades. As the blast furnace gas passes through the inner casing, pressure is applied to the rotating blades to rotate the rotating blades and the fixed rotating shafts, and transmit the rotating force of the rotating shafts to the generator to generate power.

At this time, the fixed blade is fixed to the inner casing variable variably, and by varying the mounting angle of the fixed blade to control the direction of the blast furnace gas according to the pressure of the blast furnace gas to adjust the pressure applied to the rotating blades This is controlled to enable rated power generation.

However, although the dust is doubled through the dry dust collector and the wet dust collector, it still contains a considerable amount of dust. Therefore, dust is attached to the rotary blades and the fixed blades of the turbine used for the static pressure power generation for a long time. There is a problem that the blockage causes the flow rate decreases, leading to a decrease in power generation.

In addition, in order to remove the dust, the decommissioning is performed mainly by stopping the turbine for a certain time, which not only consumes time and manpower, but also greatly affects productivity, such as interrupting power production and affecting normal operation of the blast furnace. Giving results.

The matters described in this Background section are intended to enhance the understanding of the background of the invention, and may include matters not previously known to those of ordinary skill in the art.

Therefore, the present invention has been invented to solve the problems as described above, the problem to be solved by the present invention is that the dust contained in the blast furnace gas is attached to the blades deposited or accumulated in the turbine operated by the blast furnace gas. By preventing, to provide a turbine blade cleaning apparatus for blast furnace static pressure power generation to secure a flow path to maintain a high power generation efficiency.

Turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention for achieving this object is a rail connected to the inner casing of the turbine; Drive means installed to be movable along the rail; And according to the cumulative amount of dust disposed between the inner circumferential surface of the inner casing and the outer circumferential surface of the rail movably mounted through the drive means, attached to the fixed blade mounted to the inner casing through the rotating rod of the variable device, And a cleaning module for selectively spraying high pressure water on the fixed blade to remove the attached dust.

The rail may have a gear portion formed along an inner circumferential surface thereof.

The driving means includes a mounting bracket having one end connected to the cleaning module; A drive motor mounted to the other end of the mounting bracket; And a driving gear mounted to the rotation shaft of the driving motor and engaged with the gear unit.

The cleaning module includes a housing in which a slot is formed in the height direction at the center of the front face toward the fixed blade; An injection nozzle provided in the housing and installed to be movable on the slot according to a forward and backward operation of an operation cylinder including an operation rod; An illumination unit provided at one front side of the housing based on the injection nozzle and providing a light source to the fixed blade; And a camera unit provided at the other front side of the housing based on the injection nozzle and photographing a cumulative amount of dust attached to the fixed blade.

The housing may be formed in a rectangular box shape.

The working cylinder may be disposed outside the housing on the opposite side of the driving means, and a tip of the working rod inserted into the housing may be connected to the injection nozzle.

The spray nozzle may remove dust by spraying water of a high pressure selectively supplied from an external water supply device to the fixed blade.

A guide unit may be further provided between the rail and the cleaning module to guide the movement of the cleaning module according to the operation of the driving means.

The guide unit may include a guide groove formed along a circumference of an outer circumferential surface of the rail; A pair of roller brackets mounted to the cleaning module corresponding to the guide grooves; And a roller rotatably mounted through the roller bracket and in rolling contact with the guide groove.

The driving means and the cleaning module are electrically connected to a control unit provided outside, and may be selectively operated according to a control signal of the control unit.

The rail may be formed as a circular ring spaced at both ends, and may be fixed to the inner casing through connecting frames respectively mounted at spaced ends.

According to the turbine blade cleaning apparatus for blast furnace static pressure power generation according to the embodiment of the present invention as described above, by preventing the dust contained in the blast furnace gas attached to the fixed blade in the turbine operated by the blast furnace gas to accumulate or accumulate Therefore, the flow path of the blast furnace gas is secured to maintain a high power generation efficiency.

In addition, the present invention can remove the dust attached and accumulated on the rotating rod that deforms the mounting angle of the fixed blade to prevent breakage of the rotating rod, smoothly changing the mounting angle of the fixed blade, equipment failure and power generation amount It also has the effect of preventing the deterioration in advance.

In addition, the present invention can be automatically cleaned by checking the accumulated amount of dust in the turbine blade in real time, it is possible to extend the inspection cycle of the static pressure generator, it is also effective to reduce the maintenance cost by reducing the maintenance work time.

1 is a configuration diagram of a blast furnace static pressure power generation system that can be applied to the turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention.
2 is a cross-sectional view of a turbine to which the turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention is applied.
3 is a front view of a turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention.
Figure 4 is a side view of the turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention.
5 is a plan view of the turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

Prior to this, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, which can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

Since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to those illustrated in the drawings, and the thicknesses are enlarged to clearly express various parts and regions.

And throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless specifically stated otherwise.

In addition, the terms "... unit", "... means", "... part", "... member", etc. described in the specification refer to a unit of a comprehensive configuration that performs at least one function or operation. it means.

1 is a configuration diagram of a blast furnace furnace static power generation system that can be applied to the blast furnace furnace static pressure turbine blade cleaning apparatus according to an embodiment of the present invention, Figure 2 is a blast furnace furnace static pressure turbine blade according to an embodiment of the present invention Sectional view of a turbine to which a cleaning device is applied.

Turbine blade cleaning apparatus 100 for blast furnace static pressure power generation according to an embodiment of the present invention is used in the blast furnace furnace static power generation system.

First, in the blast furnace stationary pressure power generation system, as shown in FIG. 1, blast furnace gas of high temperature and high pressure is discharged from the upper part (the furnace) of the blast furnace 1. Since the blast furnace gas contains a large amount of dust, it is first dedusted in the dry dust collector 2 and then dedusted secondly in the wet dust collector 3.

The blast furnace gas sequestered second in the wet dust collector 3 is controlled by the bishop cone 4 connected to the stationary pressure controller to control the stationary pressure (pressure at the top of the blast furnace), and in the shear pressure controller of the stationary pressure generator 5. The shear pressure is controlled by the pressure transmitter, and the shear pressure is controlled through the bypass control valve and the turbine control valve. Then, the turbine is rotated to generate power and stored in the gas holder for reuse as fuel.

As shown in FIG. 2, the static pressure generator 5 includes a turbine 5a, and the inner casing 6 of the turbine 5a has a plurality of fixed blades 7 fixed to an inner side thereof. do. The fixed blades 7 function to concentrate the blast furnace gas toward at least one or more rotary blades 8 which are fixed to the rotary shaft S and are rotatable.

Accordingly, the rotary shaft S is rotated by the pressure of the blast furnace gas concentrated toward the rotary blade 8 by the fixed blades 7, and the electric power is generated by rotating the generator turbine connected to the rotary shaft S. You can.

Here, the outer side of the inner casing (6) is provided with a variable device (9) including a rotating rod (9a) for varying the fixed blade (7).

In the static pressure generator 5 configured as described above, the inner casing 6 is provided with a turbine blade cleaning device 100 according to an embodiment of the present invention in front of the fixed blade 7.

Figure 3 is a front view of the blast furnace furnace static power turbine blade cleaning apparatus according to an embodiment of the present invention, Figure 4 is a side view of the turbine blade cleaning apparatus for blast furnace static pressure power generation according to an embodiment of the present invention, Figure 5 A plan view of a blast furnace turbine pressure cleaning device according to an embodiment of the present invention.

Turbine blade cleaning apparatus 100 according to an embodiment of the present invention, as shown in Figure 3 to 5, includes a rail 110, a drive means 120, and a cleaning module 130.

First, the rail 110 is connected to the inner casing 6. Here, the gear unit 112 is formed along the circumference of the inner circumference of the rail 110.

Here, the rail 110 may be formed as a circular ring spaced at both ends, and may be fixed to the inner casing 6 through connection frames 114 respectively mounted at spaced ends.

In this embodiment, the driving means 120 is installed to be movable along the rail (110).

The driving means 120 includes a mounting bracket 122 having one end connected to the cleaning module 130, a driving motor 124 mounted at the other end of the mounting bracket 122, and a rotation shaft of the driving motor 124. It may be mounted to, and may include a drive gear 126 meshed with the gear 112.

Here, the drive motor 124 may be formed of a servo motor or a step motor capable of adjusting the rotation speed and the rotation direction.

The driving means 120 configured as described above may operate the driving motor 124 in the forward or reverse direction while the driving gear 126 is engaged with the gear part 112 formed in the rail 110. In this case, the rail 110 may be rotated in a clockwise or counterclockwise direction along the gear part 112.

The cleaning module 130 is disposed between the inner circumferential surface of the inner casing 6 and the outer circumferential surface of the rail 110. The cleaning module 130 is mounted to be movable along the rail 110 through the driving means 120, and is mounted to the inner casing 6 through the rotating rod 9a of the variable device 9. Depending on the cumulative amount of dust attached to the fixed blade (7), it is possible to remove the dust attached to the fixed blade 7 by selectively spraying high pressure water.

Here, the driving means 120 and the cleaning module 130 is electrically connected to the control unit 140 provided outside, it can be selectively operated according to the control signal of the control unit 140.

In this embodiment, the cleaning module 130 may include a housing 132, an injection nozzle 134, an illumination unit 136, and a camera unit 138.

First, the housing 132 is formed with a slot 131 in the height direction at the center of the front face toward the fixed blade (7). The housing 132 may be formed in a rectangular box shape so that the injection nozzle 134, the lighting unit 136, and the camera unit 138 are mounted therein.

Here, the guide unit 160 is further provided between the rail 110 and the housing 132 of the cleaning module 130 to guide the movement of the cleaning module 130 according to the operation of the driving means 120. Can be.

The guide unit 160 includes a guide groove 162 formed along the outer circumference of the rail 110 and a pair of roller brackets mounted to the cleaning module 130 corresponding to the guide groove 162. 164 and a roller 166 rotatably mounted between the roller brackets 164 and rolling contact with the guide grooves 132.

In the guide unit 160 configured as described above, when the cleaning module 130 is moved by the operation of the driving means 130, the roller 166 is in a cloud contact state with the guide groove 162. In addition, by being moved along the guide groove 162, it is possible to stably guide the movement of the cleaning module 130.

In this embodiment, the injection nozzle 134 is provided inside the housing 132. The tip of the injection nozzle 134 is mounted in the state protruding from the housing 132 by a predetermined length through the slot 131.

In addition, the injection nozzle 134 is mounted to the housing 132, it can be installed to be movable on the slot 131 by the forward and backward operation of the operating cylinder 133 including the operating rod (133a). have.

Here, the working cylinder 133 is disposed on the outside of the housing 132 on the opposite side of the driving means 120, the tip of the operating rod 133a inserted into the housing 132 is the injection May be connected to the nozzle 134.

Therefore, the injection nozzle 134 may be moved upward or downward on the slot 131 when the operation rod 133a of the operation cylinder 133 is operated forward or backward.

The injection nozzle 134 configured as described above may remove dust by spraying the high pressure water selectively supplied from the water supply device 150 provided on the outside to the fixed blade 7.

That is, the injection nozzle 134 is deposited on the fixed blade 7 while being moved in accordance with the length and width of the fixed blade 7 according to the operation of the driving means 120 and the working cylinder 133. Dust can be removed efficiently.

In the present embodiment, the lighting unit 136 may be provided at one front side of the housing 132 based on the injection nozzle 134 and may provide a light source to the fixed blade 7.

The lighting unit 136 may provide a light source to the fixed blade 7 inside the dark turbine 5a.

In addition, the camera unit 138 may be provided at the other front side of the housing 132 based on the injection nozzle and photograph the cumulative amount of dust attached to the fixed blade 7.

That is, when the light source is irradiated to the fixed blade 7 from the illumination unit 136 operated by the control signal of the controller 140 in the dark turbine 5a inside the camera unit 138, the The fixed blade 7 is photographed and the image signal is transmitted to the controller 140.

Then, the controller 140 determines the cumulative amount of dust on the fixed blade 7 through the image signal transmitted from the camera unit 138, and when the cumulative amount of dust is greater than the preset cumulative amount, high pressure water The water supply device 150 is operated to be sprayed onto the fixed blade 7 through the spray nozzle 134.

At the same time, the controller 140 adjusts the position of the injection nozzle 134 by operating the driving means 120 and the operation cylinder 133 based on the image photographed by the camera unit 138. The dust accumulated on the fixed blade 7 and the rotating rod 9a of the variable device 9 connected to the fixed blade 7 can be removed more efficiently.

Therefore, when the turbine blade cleaning apparatus 100 for blast furnace static pressure power generation according to the embodiment of the present invention configured as described above is applied, the dust contained in the blast furnace gas in the turbine 5a operated by the blast furnace gas is By being attached to the fixed blade 7 to prevent accumulation or accumulation, it is possible to secure a flow path through which the blast furnace gas passes and maintain high power generation efficiency.

In addition, the present invention can remove the dust attached and accumulated on the rotating rod (9a) of the variable device (9) for modifying the mounting angle of the fixed blade (7) to prevent breakage of the rotating rod (9a) In addition, by smoothly changing the mounting angle of the fixed blade 7, it is possible to prevent equipment failure and decrease in power generation amount.

In addition, the present invention can check the accumulated amount of dust on the fixed blade 7 in real time through the lighting unit 136 and the camera unit 138 to automatically clean, thereby extending the inspection cycle of the static pressure generator Maintenance costs can be reduced, and maintenance costs can be reduced.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this and is given by the person of ordinary skill in the art to the following, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

100: turbine blade cleaning device
110: rail
112: gear unit
114: connection frame
120: drive means
122: mounting bracket
124: drive motor
126: drive gear
130: cleaning module
131: slot
132: housing
133: working cylinder
134: injection nozzle
136: lighting unit
138: camera unit
140: control unit
150: water supply device
160: guide means
162: Guide Home
164: Roller Bracket
166: roller

Claims (11)

A rail connected to the inner casing of the turbine;
Drive means installed to be movable along the rail; And
Disposed between the inner circumferential surface of the inner casing and the outer circumferential surface of the rail and movably mounted through the driving means, and according to the cumulative amount of dust attached to the fixed blade mounted to the inner casing through the rotating rod of the variable device, A cleaning module for selectively spraying high pressure water onto the fixed blade to remove dusts attached thereto;
Including,
The cleaning module,
A housing in which a slot is formed in a height direction at the center of the front face toward the fixed blade;
An injection nozzle provided in the housing and installed to be movable on the slot according to a forward and backward operation of an operation cylinder including an operation rod;
An illumination unit provided at one front side of the housing based on the injection nozzle and providing a light source to the fixed blade; And
A camera unit provided on the other front side of the housing based on the injection nozzle and photographing an accumulated amount of dust attached to the fixed blade;
Turbine blade cleaning device for blast furnace static pressure power generation comprising a. The method of claim 1,
On the rail
Turbine blade cleaning device for blast furnace static pressure power generation, the gear portion is formed along the inner peripheral surface. The method of claim 2,
The driving means
A mounting bracket having one end connected to the cleaning module;
A drive motor mounted to the other end of the mounting bracket; And
A drive gear mounted to a rotation shaft of the drive motor and engaged with the gear part;
Turbine blade cleaning device for blast furnace static pressure power generation comprising a. delete The method of claim 1,
The housing is
Turbine blade cleaning device for blast furnace static pressure power generation is formed in a square box shape. The method of claim 1,
The working cylinder
A turbine blade cleaning apparatus for blast furnace static pressure power generation, which is disposed outside the housing on the opposite side of the driving means, and a tip of the operation rod inserted into the housing is connected to the injection nozzle. The method of claim 1,
The injection nozzle
A turbine blade cleaning apparatus for blast furnace static pressure power generation, which removes dust by spraying high pressure water selectively supplied from an external water supply device to the fixed blade. delete A rail connected to the inner casing of the turbine;
Drive means installed to be movable along the rail;
Disposed between the inner circumferential surface of the inner casing and the outer circumferential surface of the rail and movably mounted through the driving means, and according to the cumulative amount of dust attached to the fixed blade mounted to the inner casing through the rotating rod of the variable device, A cleaning module for selectively spraying high pressure water onto the fixed blade to remove dusts attached thereto; And
A guide unit between the rail and the cleaning module to guide the movement of the cleaning module according to the operation of the driving means;
Including,
The guide unit,
A guide groove formed along an outer circumference of the rail;
A pair of roller brackets mounted to the cleaning module corresponding to the guide grooves; And
A roller rotatably mounted through the roller bracket and in rolling contact with the guide groove;
Turbine blade cleaning device for blast furnace static pressure power generation comprising a. The method of claim 1,
The driving means and the cleaning module
The turbine blade cleaning device for blast furnace static pressure power generation is electrically connected to a control unit provided outside, and selectively operated according to the control signal of the control unit. The method of claim 1,
The rail is
Turbine blade cleaning device for blast furnace static pressure power generation is formed of a circular ring at both ends spaced by a predetermined interval, and fixed to the inner casing through a connecting frame mounted on each of the spaced ends.

Images