Tunnel-type hybrid cooling steam recovery equipment

Abstract

To provide a tunnel type hybrid cooled steam collection facility that realizes rapid cooling and noise reduction.SOLUTION: A tunnel type hybrid cooled steam collection facility includes a housing, a plurality of air-cooled heat exchange plates, a chamber, a mesh steam tunnel, a steam inlet, a plurality of spray heads, and a water outlet. The air-cooled heat exchange plates are arranged on an outer surface of the housing. The chamber is formed in the housing. The mesh steam tunnel is arranged in the chamber. The steam inlet penetrates the housing. The spray heads are arranged in the chamber. The water outlet penetrates the housing. Steam supplied to the mesh steam tunnel from the steam inlet is condensed into condensed water. In a hybrid mode, the spray heads provide the chamber with cooling spray, and dissipate heat in a hybrid system in cooperation with the housing and the air-cooled heat exchange plates.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to steam recovery equipment, and particularly to tunnel-type hybrid cooling steam recovery equipment.

Background Art

[0002] Steam condensers are widely used in today's steam turbine power plants to condense the steam discharged from the steam turbine and achieve the recycling effect of the steam. Conventional steam condensers have a chamber connected to the steam outlet of the steam turbine, and the cooling water flows through the heat exchange tubes in the chamber. The steam discharged from the steam turbine enters the chamber and contacts the heat exchange tubes. The cooling water flowing through the heat exchange tubes absorbs the latent heat of the high-temperature steam and condenses into water for reuse. Another conventional steam condenser has a chamber, and the heat exchange tubes (steam conduits) are arranged in the chamber and connected to the steam outlet of the steam turbine. The cooling water in the chamber cools the steam conduits, and the steam is reused.

[0003] The above-mentioned steam condensers require a large amount of cooling water and a large number of heat exchange tubes, resulting in high costs. In addition, the steam flowing inside and outside the heat exchange tubes can cause noise and wear of the heat exchange tubes. Therefore, it is necessary to solve the above problems.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, an object of the present invention is to provide a tunnel-type hybrid cooling steam recovery equipment that realizes rapid cooling and noise reduction.

Means for Solving the Problems

[0005] To achieve the above object, the present invention provides a tunnel-type hybrid cooling steam recovery facility including a housing, a plurality of air-cooled heat exchange plates, a chamber, a mesh steam tunnel, a steam inlet, a plurality of spray heads, and a water outlet. The air-cooled heat exchange plates are arranged on the outer surface of the housing, the chamber is formed within the housing, the mesh steam tunnel is arranged within the chamber, the steam inlet penetrates the housing, the spray heads are arranged within the chamber, and the water outlet penetrates the housing. The steam supplied from the steam inlet to the mesh steam tunnel condenses into condensed water. In the hybrid mode, the spray heads provide a cooling spray to the chamber and dissipate heat in a hybrid manner in cooperation with the housing and the air-cooled heat exchange plates.

[0006] According to the above embodiment, the vertical steam tunnel having a large diameter buffers the flow of high-pressure steam, the layers of a plurality of metal meshes reduce the energy and pressure of the steam, and the plurality of metal wool components dampen noise and absorb steam. Therefore, rapid cooling can be achieved by combining air cooling and water cooling, and steam recovery with low noise can be realized.

[0007] To make the above content of the present invention clearer and more understandable, the following will be described in detail with reference to preferred embodiments and drawings.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0009] FIG. 1 is a schematic diagram showing a steam power generation system using steam recovery equipment according to a preferred embodiment of the present invention. As shown in FIG. 1, the steam power generation system includes a steam recovery facility 100, a steam generation facility 200, a control facility 210, a turbine 220, and a generator 230. In FIG. 1, the virtual line indicates an electrical connection path, and the solid line indicates a physical conduit connection path. The control facility 210 may be realized by a controller and is electrically connected to units (for example, the steam recovery facility 100, the steam generation facility 200, the generator 230, etc.) to control the operation of these units. The steam recovery facility 100 generates high-pressure steam flowing into the turbine 220. The turbine 220 converts the kinetic energy of the high-pressure steam into mechanical energy and is connected to the generator 230, which converts the mechanical energy into electrical energy. The high-pressure steam that has passed through the turbine 220 becomes low-temperature and low-pressure steam flowing into the steam recovery facility 100. The steam recovery facility 100 condenses the steam into water. The steam generation facility 200 receives water and generates steam. Or, another external unit receives the water for further use.

[0010] FIG. 2 is a partial schematic cross-sectional view of the vapor recovery facility 100 of FIG. 1 as viewed from the side. As shown in FIG. 2, the vapor recovery facility 100 of this example is a tunnel-type hybrid cooling vapor recovery facility, which is installed on the ground, on a building or on a structure, and includes a housing 10, a plurality of air-cooled heat exchange plates 20, a chamber 30, a mesh vapor tunnel 40, a vapor inlet 50, a plurality of spray heads 60, and a water outlet 70. These air-cooled heat exchange plates 20 are arranged in contact with the outside air on the outer surface 11 of the housing 10, and heat dissipation is performed by air cooling, which can be realized by heat dissipation fins. The chamber 30 is formed inside the housing 10. The mesh vapor tunnel 40 is arranged inside the chamber 30. The vapor inlet 50 penetrates the housing 10 and is connected to the chamber 30. These spray heads 60 are arranged inside the chamber 30, and in this example, they are arranged on the upper side of the chamber. In other examples, the plurality of spray heads 60 are arranged on the upper side, lower side, left side, and / or right side of the chamber. The water outlet 70 penetrates the housing 10 and is connected to the chamber 30. In actual operation, the vapor inlet 50 provides vapor, and the vapor enters the mesh vapor tunnel 40 and then condenses into condensed water. In the hybrid mode, the plurality of spray heads 60 provide a cooling spray to the chamber 30 and dissipate heat in a hybrid manner in cooperation with the housing 10 and the air-cooled heat exchange plates 20. It can be understood that the mesh vapor tunnel 40 reduces the speed and pressure of the high-pressure vapor and removes a part of the kinetic energy. Therefore, a part of the vapor directly condenses inside the mesh vapor tunnel 40. The other part of the vapor passes through the mesh vapor tunnel 40, is cooled by the housing 10 or other components, and condenses into condensed water.

[0011] In one example, the mesh steam tunnel 40 includes a plurality of metal meshes and has an axis extending in the horizontal direction. These metal meshes form a cylindrical metal cage, and the cylindrical metal cage functions as a medium that provides resistance to steam and condenses steam. In another example, the mesh steam tunnel 40 includes a circular, rectangular, or other-shaped stainless steel mesh surrounded by a cylindrical stainless steel mesh, realizing the function of reducing the energy and pressure of steam in the axial and radial directions and providing a better effect.

[0012] The steam recovery facility 100 can further include a plurality of mesh partitions 80. The plurality of mesh partitions 80 divide the chamber 30 in the horizontal and vertical directions, so that the chamber 30 is divided into a plurality of sub-chambers connected to each other. The plurality of sub-chambers include an intermediate sub-chamber 31 and peripheral sub-chambers 32 - 39 surrounding the intermediate sub-chamber 31. The mesh steam tunnel 40 is disposed within the intermediate sub-chamber 31 by four mesh partitions 80. The peripheral sub-chambers 32 - 39 accommodate a plurality of metal wool components 81 such as steel wires or steel wool pieces for absorbing steam, silencing, and condensing steam into condensed water. These spray heads 60 provide a cooling spray to a part or all of the plurality of metal wool components 81 to cool the metal wool components 81. The steam recovery facility 100 can further include a plurality of inclined plates 82, and the inclined plates 82 guide the condensed water to the water outlet 70. These inclined plates 82 are disposed on the structural wall of the housing 10 and can be inclined from two sides toward the central position, so that the condensed water can flow to the central position and finally flow out from the water outlet 70. Of course, if the metal wool components 81 can be attached to a predetermined position, the mesh partitions 80 may be omitted.

[0013] The steam recovery facility 100 can further include a control device 90, a cooling water supply source 91, and a temperature sensor 92. The cooling water supply source 91 is electrically connected to the control device 90 and is connected to a plurality of spray heads 60 via a physical conduit. In the hybrid mode, the cooling water supply source 91 provides cooling water to the spray heads 60, and the spray heads 60 generate a cooling spray, and can also provide an appropriate amount of water to compensate for steam loss. The temperature sensor 92 is disposed on the housing 10 or one of the plurality of air-cooled heat exchange plates 20 and is electrically connected to the control device 90. The control device 90 may be implemented by a controller, and controls the cooling water supply source 91 according to the temperature signal of the temperature sensor 92 to provide cooling water to the spray heads 60, and the spray heads 60 generate a cooling spray. When the temperature represented by the temperature signal is higher than a predetermined temperature (for example, 85 °C or another temperature), the control device 90 enters the hybrid mode. When the temperature represented by the temperature signal is below the predetermined temperature, the control device 90 enters the air-cooling mode, controls the cooling water supply source 91 so as not to provide cooling water to the spray heads 60, and the spray heads 60 do not generate a cooling spray.

[0014] Regarding water replenishment, in one example, a flow meter (not shown) is disposed at the water outlet 70. When the flow value of the flow meter does not reach a predetermined flow value, the control device 90 controls the cooling water supply source 91 according to the signal of the flow meter instead of the temperature signal, the cooling water supply source 91 provides cooling water to the spray heads 60, and the spray heads 60 generate a cooling spray. In another example, when the water level of the steam recovery facility and / or the water supply source of the steam generation facility is lower than a predetermined water level, the control device 90 controls the cooling water supply source 91 according to the water level signal of a water level meter or a sensor (not shown) instead of the temperature signal, the cooling water supply source 91 provides cooling water to the spray heads 60, and the spray heads 60 generate a cooling spray.

[0015] Figure 3 is a schematic front view showing another example of the vapor recovery facility of Figure 1. Since the structure of Figure 3 is partially similar to the structure of Figure 2, the same elements are referred to by the same reference numerals. Note that in Figure 3, the metal wool components are not shown in order to prevent the structure of Figure 3 from being unclear. As shown in Figure 3, the vapor recovery facility 100 further includes a ventilation structure 95. The ventilation structure 95 is disposed on the outer surface 11 of the housing 10, connects the chamber 30 to the external environment, and adjusts the pressure of the chamber 30. These sub-chambers further include a spray chamber 36A and an exhaust chamber 36B, and both the spray chamber 36A and the exhaust chamber 36B are disposed above the peripheral sub-chambers 32-39. These spray heads 60 provide a cooling spray to part or all of the metal wool component 81 through the spray chamber 36A, and the ventilation structure 95 is directly connected to the exhaust chamber 36B. Thus, the cooling spray can provide a part of the space for entering the metal wool component 81, and the metal wool component 81 cannot directly block the spray area of the spray head 60. Of course, the ventilation structure 95 does not need to exist simultaneously with the spray chamber 36A and the exhaust chamber 36B, and the pressure of the chamber 30 in Figure 2 can also be adjusted. In this example, the mesh vapor tunnel 40 includes metal meshes 41-45 (e.g., stainless steel meshes) extending in the vertical direction. The metal meshes 41-45 are arranged in the horizontal direction. Of course, the metal meshes 41-45 may be configured to overlap the mesh partition 80 in a front view, but are not limited thereto. Also, the mesh holes of the metal mesh 41 near the vapor inlet 50 are larger than the mesh holes of the metal mesh 45 away from the vapor inlet 50. That is, a coarse stainless steel metal mesh is used first, providing functions of reducing energy and pressure and a sound-absorbing function. Since the pressure and kinetic energy of the vapor are reduced, the mesh holes of the following stainless steel metal meshes can be gradually reduced.For example, the mesh hole sizes of the metal meshes 41 to 45 are gradually decreased (hole of mesh 45 < hole of mesh 44 < hole of mesh 43 < hole of mesh 42 < hole of mesh 41), and the effects of gradually decreasing the steam pressure and kinetic energy are obtained. In FIG. 3, the inclined plate 82 is inclined downward from left to right.

[0016] According to the steam recovery facility of this embodiment, the vertical steam tunnel buffers the flow of high-pressure steam, the plurality of metal mesh layers reduce the energy and pressure of the steam, and the plurality of metal wool components eliminate noise and absorb steam. Therefore, rapid cooling can be realized by using air cooling and water cooling in combination, and steam recovery with low noise can be realized.

[0017] The specific examples presented in the detailed description of the preferred embodiments are for explaining the technical content of the present invention and do not narrowly limit the present invention to the above-described embodiments. Various changes that do not deviate from the idea of the present invention and the following claims are included in the scope of the present invention.

Explanation of Reference Numerals

[0018] 10: Housing 11: Outer surface 20: Air-cooled heat exchange plate 30: Chamber 31: Intermediate sub-chamber 32 to 39: Peripheral sub-chambers 36A: Spray chamber 36B: Exhaust chamber 40: Mesh steam tunnel 41 to 45: Metal meshes 50: Steam inlet 60: Spray head 70: Water outlet 80: Mesh partition 81: Metal wool component 82: Inclined plate 90: Control device 91: Cooling water supply source 92: Temperature sensor 95: Ventilation structure 100: Steam recovery equipment 200: Steam generation equipment 220: Turbine 230: Generator

Claims

1. A tunnel-type hybrid cooling steam recovery facility including a housing, a plurality of air-cooled heat exchange plates, a chamber, a mesh steam tunnel, a steam inlet, a plurality of spray heads, and a water outlet, wherein the plurality of air-cooled heat exchange plates are disposed on an outer surface of the housing, the chamber is formed within the housing, the mesh steam tunnel is disposed within the chamber, the steam inlet penetrates through the housing, the plurality of spray heads are disposed within the chamber, the water outlet penetrates through the housing, the steam supplied from the steam inlet to the mesh steam tunnel condenses into condensed water, and in the hybrid mode, the plurality of spray heads provide a cooling spray to the chamber and dissipate heat in a hybrid manner in cooperation with the housing and the plurality of air-cooled heat exchange plates, the mesh steam tunnel is a cylindrical metal cage, the steam inlet is disposed at one end of the mesh steam tunnel, the mesh steam tunnel has an axis extending in the horizontal direction and includes a plurality of metal meshes extending in the vertical direction, and the plurality of metal meshes are disposed in the horizontal direction. The tunnel-type hybrid cooling steam recovery facility is characterized by this.

2. Further including a plurality of mesh partitions, the plurality of mesh partitions divide the chamber into a plurality of sub-chambers interconnected in the horizontal and vertical directions, the plurality of sub-chambers include an intermediate sub-chamber and a plurality of peripheral sub-chambers surrounding the intermediate sub-chamber, and the mesh steam tunnel is disposed in the intermediate sub-chamber. The tunnel-type hybrid cooling steam recovery facility according to Claim 1 is characterized by this.

3. A plurality of metal wool components are disposed within the plurality of peripheral sub-chambers, absorb and silence the steam, condense the steam into the condensed water, and the plurality of spray heads provide the cooling spray to a part or all of the plurality of metal wool components. The tunnel-type hybrid cooling steam recovery facility according to Claim 2 is characterized by this.

4. It further includes a ventilation structure, the ventilation structure is arranged on the outer surface of the housing, connects the chamber to the external environment, adjusts the pressure of the chamber, the plurality of sub-chambers further include a spray chamber and an exhaust chamber arranged above the plurality of peripheral sub-chambers, the plurality of spray heads provide the cooling spray passing through the spray chamber, spray the cooling spray on part or all of the plurality of metal wool components, and the ventilation structure is directly connected to the exhaust chamber. The tunnel-type hybrid cooling vapor recovery facility according to claim 3, characterized in that.

5. It further includes a plurality of inclined plates, and the plurality of inclined plates guide the condensed water to the water outlet. The tunnel-type hybrid cooling vapor recovery facility according to claim 2, characterized in that.

6. It further includes a control device, a cooling water supply source, and a temperature sensor. The cooling water supply source is electrically connected to the control device and connected to the plurality of spray heads via a physical conduit. The cooling water supply source provides cooling water to the plurality of spray heads, and the plurality of spray heads generate the cooling spray. The temperature sensor is arranged on the housing or one of the plurality of air-cooled heat exchange plates and is electrically connected to the control device. The tunnel-type hybrid cooling vapor recovery facility according to claim 1, characterized in that.

7. The control device controls the cooling water supply source according to the temperature signal of the temperature sensor to provide the cooling water to the plurality of spray heads, and the plurality of spray heads generate the cooling spray. When the temperature represented by the temperature signal is higher than a predetermined temperature, the control device enters the hybrid mode. When the temperature represented by the temperature signal is below the predetermined temperature, the control device enters the air-cooling mode and controls the cooling water supply source not to provide the cooling water to the plurality of spray heads, and the plurality of spray heads do not generate the cooling spray. When the temperature represented by the temperature signal is higher than a predetermined temperature, the control device enters the hybrid mode. When the temperature represented by the temperature signal is below the predetermined temperature, the control device enters the air-cooling mode and controls the cooling water supply source not to provide the cooling water to the plurality of spray heads, and the plurality of spray heads do not generate the cooling spray. The tunnel-type hybrid cooling vapor recovery facility according to claim 6, characterized in that.

8. It further includes a ventilation structure, the ventilation structure is arranged on the outer surface of the housing, connects the chamber to the external environment, and adjusts the pressure of the chamber. The tunnel-type hybrid cooling vapor recovery facility according to claim 1, characterized in that.

9. The tunnel-type hybrid cooling steam recovery facility according to claim 1, wherein one mesh hole of the plurality of metal meshes close to the steam inlet is larger than one mesh hole of the plurality of metal meshes away from the steam inlet.

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