An out-of-furnace horizontal steam-water separation device

Abstract

The application discloses a horizontal type steam-water separation device outside a furnace and belongs to the technical field of auxiliary equipment of electric machines. The steam-water separation device comprises a horizontally arranged cylinder. Steam inlets and outlets are arranged at two ends of the cylinder, and a steam-water separation unit and a flow separation unit are arranged in the cylinder. The flow separation unit divides the cylinder into a cylinder area and a flow separation area. The steam inlets are arranged in the cylinder area, and the steam outlets are arranged in the flow separation area. A drain port is arranged at the bottom of the cylinder. The steam-water separation unit is arranged in the flow separation area and communicates with the drain port. The steam-water separation device has the advantages of simple structure, convenient use, small size, high space utilization efficiency, high separation efficiency and high steam quality.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of nuclear power engineering, and particularly relates to an out-of-furnace horizontal steam-water separation device. BACKGROUND

[0002] In a power station, saturated steam enters a steam turbine, so the steam discharged from a high-pressure cylinder has a high humidity after work. However, a series of devices located behind the high-pressure cylinder have a high requirement for dryness, so it is necessary to reduce the humidity of the steam discharged from the high-pressure cylinder. In order to reduce the humidity of the steam, a steam-water separation device is arranged to separate the wet steam, so as to improve the dryness of the wet steam. The steam-water separation device is generally located in the upstream direction of the steam turbine in the steam turbine unit of the power station, and its function is to separate the fine water droplets carried by the wet steam, to provide dry saturated steam with qualified quality to the steam turbine, and to ensure the safe and economic operation of the steam turbine.

[0003] At present, existing steam-water separation devices of power stations are generally divided into two types. One is a simple separation unit packaged in a pipeline. This separation device has a low separation efficiency, cannot meet the dryness requirement for safe and stable operation of the steam turbine, and seriously affects the service life of the steam turbine. The other is a more complex separation device with a high separation efficiency, but the steam inlet and outlet are generally arranged in the vertical direction, which requires a large height and has a low space utilization rate. Especially when the height of the power station workshop is limited, it seriously affects the space layout of the workshop. SUMMARY

[0004] Therefore, the present application provides an out-of-furnace horizontal steam-water separation device, which solves the problems of the existing steam-water separator, such as inconvenient use in a small space, low space utilization rate, and poor steam-water separation effect.

[0005] The present application is realized by the following technical solutions:

[0006] The out-of-furnace horizontal steam-water separation device comprises a horizontally arranged cylinder, steam inlets and outlets are arranged at both ends of the cylinder, a steam-water separation unit and a flow separation unit are arranged in the cylinder, the flow separation unit divides the inside of the cylinder into a cylinder area and a flow separation area, the steam inlet is arranged in the cylinder area, and the steam outlet is arranged in the flow separation area, a drain port is arranged at the bottom of the cylinder, the steam-water separation unit is arranged in the flow separation area and communicates with the drain port.

[0007] Compared with the prior art, the present application has at least the following technical effects:

[0008] The steam-water separation device of the present application adopts a horizontal small-diameter elongated arrangement mode, which can greatly reduce the size of the steam-water separation device and improve the space utilization efficiency; meanwhile, a flow separation unit is arranged in the cylinder to separate the inside of the cylinder, wet steam enters the cylinder and passes through the flow separation unit to guide the uniform distribution of the steam and balance the steam flow rate change, so that the wet steam is uniformly distributed before entering the steam-water separation unit, effectively improving the separation efficiency and the quality of the outlet steam.

[0009] Further, the flow separation unit is composed of an inlet and outlet baffle and a flow separation plate, the inlet and outlet baffles are respectively vertically arranged at the ends of the cylinder near the steam inlet and outlet, and the flow separation plate is obliquely arranged in the cylinder and vertically connected to the inlet and outlet baffles at both ends.

[0010] Further, the flow separation plate is a perforated plate, and the opening size of the perforated plate gradually decreases from the end connected to the inlet baffle to the end connected to the outlet baffle. Since the steam flow rate gradually decreases as the steam flows from the inlet to the outlet, the opening size of the flow separation plate is arranged to gradually decrease from the steam inlet to the steam outlet, and the resistance of the flow separation plate gradually increases, so as to balance the change of the steam flow rate from large to small, so that the steam is uniformly distributed near the inlet of the steam-water separation unit, effectively improving the separation efficiency and the quality of the outlet steam.

[0011] Further, a sealing unit is further arranged in the cylinder, the sealing unit is arranged around the bottom of the steam-water separation unit to seal the space between the steam-water separation unit and the drain port and form a drain area. The sealing unit supports the steam-water separation unit and seals the drain space, reduces the possibility of wet steam bringing water into the steam flow again, and makes the drain process not be disturbed by the steam flow and quickly discharged from the cylinder through the drain connector.

[0012] Further, the sealing unit includes a sealing plate and a sealing pad, one end of the sealing plate is fixed to the bottom of the steam-water separation unit, and the other end of the sealing plate is arranged around the inner wall of the cylinder near the drain port through the sealing pad. One end of the sealing plate is fixed to the bottom of the steam-water separation unit, and the other end of the sealing plate abuts against the inner wall of the cylinder near the drain port through the sealing pad, supporting the steam-water separation unit and sealing the space between the steam-water separation unit and the drain port to form a drain area.

[0013] Further, a support unit is further arranged in the cylinder, the support unit includes a support plate and a support pad, the support plate is arranged at the top of the steam-water separation unit, and the other end of the support plate abuts against the inner wall of the cylinder through the support pad. The support unit supports and fixes the steam-water separation unit to avoid the steam-water separation unit from shaking due to the influence of the air flow or the external environment.

[0014] Further, the cylinder body comprises a cylinder body and a head arranged at both ends of the cylinder body, and the steam inlet and outlet are arranged at positions corresponding to the axial direction of the cylinder body. The steam inlet and outlet are arranged in the axial direction of the steam-water separation device, so that the steam-water separation device can be used as a part of the gas conveying pipeline, the space utilization rate can be greatly improved, and the trend of the space of the slender device in the power station field in recent years is met.

[0015] Further, a safety valve interface is arranged on the top side wall of the cylinder body.

[0016] Further, an observation hole is arranged on the top side wall of the cylinder body, so as to facilitate observation of the internal condition of the cylinder body.

[0017] Further, a support is arranged at the bottom of the cylinder body.

[0018] The application also has the following technical effects:

[0019] The sealing unit is arranged at the bottom of the steam-water separation unit, so as to separate the wet steam, dry steam and water, which can improve the quality of the dry steam and make the water rapidly pass through the water outlet pipe and be discharged from the cylinder body.

[0020] The application has the advantages of simple structure and convenient use, and the calculation analysis and test show that the steam-water separation device has higher separation efficiency, and the separation efficiency can reach 98% under the optimal working condition. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a horizontal out-of-furnace steam-water separation device.

[0022] Figure 2 It is a structural schematic diagram of a horizontal out-of-furnace steam-water separation device.

[0023] Figure 3 It is a structural schematic diagram of a horizontal out-of-furnace steam-water separation device. Figure 1 It is a sectional view in the direction of A-A.

[0024] Figure 4 It is a sectional view in the direction of B-B. Figure 1 It is a sectional view in the direction of B-B.

[0025] Figure 5 It is a structural schematic diagram of a horizontal out-of-furnace steam-water separation device.

[0026] Wherein, the drawing description, 1-cylinder; 2-shunt unit; 3-steam and water separation unit; 4-sealing unit; 5-support unit; 6-cylinder area; 7-shunt area; 8-drainage connection; 11-cylinder body; 12-right head; 13-left head; 14-steam inlet; 15-steam outlet; 16-drainage port; 17-saddle support; 18-safety valve interface; 19-viewing hole; 21-shunt plate; 22-inlet baffle; 23-outlet baffle; 41-first sealing plate; 42-second sealing plate; 43-second sealing pad; 44-first sealing pad; 51-first support plate; 52-second support plate; 53-first support pad; 54-second support pad. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present application, the following will be a more comprehensive and detailed description of the present application in conjunction with the drawings and preferred embodiments of the specification, but the protection scope of the present application is not limited to the following specific embodiments.

[0028] It should be noted that in the present application, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0029] In the description of the present application, the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product is used, only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] Example 1

[0031] Please refer to Figure 1 and Figure 2The embodiment provides a horizontal type steam-water separation device outside a furnace, which comprises a cylinder body 1, steam outlets 15 and steam inlets 14 are arranged at left and right ends of the cylinder body, a steam-water separation unit 3 and a flow distribution unit 2 are arranged in the cylinder body 1, steam enters the cylinder body 1 from the steam inlets 14, is dispersed by the flow distribution unit 2 first, then enters the steam-water separation unit 3 to complete steam-water separation, and finally is discharged from the steam outlets 15.

[0032] Specifically, as shown in the figure, Figure 1 The cylinder body 1 comprises a cylinder body 11 and end covers arranged at both ends of the cylinder body 1, which are a left end cover 13 and a right end cover 12 respectively, the steam inlets 14 are arranged on the right end cover 12, and the steam outlets 15 are arranged on the left end cover 13, the steam inlets 14 and the steam outlets 15 are arranged in the axial direction of the cylinder body 11, so that the cylinder body 1 can be used as a part of a gas conveying pipeline, and the space utilization rate is improved; meanwhile, a drain port 16 is arranged at the bottom of the cylinder body 11, and the bottom of the steam-water separation unit 3 is communicated with the drain port 16.

[0033] Specifically, as shown in the figure, Figures 2-4 The flow distribution unit 2 and the steam-water separation unit 3 are arranged in the cylinder body 11, the cylinder body 1 is divided into a cylinder body area 6 and a flow distribution area 7 by the flow distribution unit 2, and the steam-water separation unit 3 is arranged in the flow distribution area 7. The flow distribution unit 2 is composed of an inlet baffle 22, an outlet baffle 23 and a flow distribution plate 21, the inlet baffle 22 is arranged at the connecting position of the right end cover 12 and the cylinder body 11, the cross section is shown in the figure, Figure 3 The outlet baffle 23 is arranged at the connecting position of the left end cover 13 and the cylinder body 11, and the cross section is shown in the figure, Figure 4 The inlet baffle 22 and the outlet baffle 23 are vertically fixed on the corresponding positions of the two sides of the cylinder body 11 respectively, and the flow distribution plate 21 is arranged in the cylinder body 11 in an inclined manner, and the two ends of the flow distribution plate 21 are connected with the inlet baffle 22 and the outlet baffle 23 respectively, so that the cylinder body 1 is divided into the cylinder body area 6 and the flow distribution area 7. The steam inlets 14 are located in the cylinder body area 6, and the steam outlets 15 are located in the flow distribution area 7.

[0034] In the embodiment, as shown in the figure, Figure 5 The flow distribution plate 21 adopts a perforated plate, the opening size of the perforated plate gradually decreases from the inlet baffle 22 to the outlet baffle 23, so that the resistance of airflow passing through the perforated plate increases, the change of the steam flow rate gradually decreases from the steam inlets 14 to the steam outlets 15 is balanced, the steam is uniformly distributed near the inlet of the steam-water separation unit 3, and the separation efficiency and the quality of the outlet steam can be effectively improved.

[0035] Based on the above scheme, the actual working process of the steam-water separation device of the embodiment is as follows: wet steam enters the right end cover 12 from the steam inlet 14 and is blocked by the inlet baffle 22, flows into the cylinder area 6 from the lower left corner gap, then the steam passes through the distribution plate 21 into the distribution area 7, the distribution plate 21 uniformly distributes the steam, and finally the steam enters the steam-water separation unit 3, the steam-water separation unit 3 separates the water in the wet steam to convert it into dry steam, the steam humidity is greatly reduced, the dry steam is discharged from the steam outlet 15, the water flows from the bottom of the steam-water separation unit 3 to the water outlet 16, and finally is discharged from the cylinder 1 through the water outlet 16.

[0036] Embodiment 2

[0037] In this embodiment, the steam-water separation device of embodiment 1 is improved, and on the basis of not changing the remaining structure of embodiment 1, a sealing unit 4 is additionally arranged at the bottom of the steam-water separation unit 3 to separate the wet steam, dry steam and water, which can improve the quality of dry steam and make the water quickly discharge from the cylinder 1 through the water outlet 16.

[0038] As shown in Figure 2 , a sealing unit 4 is arranged in the cylinder 1, the sealing unit 4 supports the steam-water separation unit 3 and seals the water area, which includes a sealing plate and a sealing pad, the sealing plate includes a first sealing plate 41 and a second sealing plate 42, and the sealing pad includes a first sealing pad 44 and a second sealing pad 43. The first sealing plate 41 and the second sealing plate 42 are arranged at the bottom of the steam-water separation unit 3, one end of the first sealing plate 41 and the second sealing plate 42 is respectively fixedly connected with the bottom of the steam-water separation unit 3 perpendicularly, and the other end is respectively abutted with the inner wall of the cylinder body 11 around the water outlet 16 through the first sealing pad 44 and the second sealing pad 43, so as to form a sealed water area by surrounding the space at the bottom of the steam-water separation unit 3.

[0039] In the actual working process, the water flowing into the water area from the bottom of the steam-water separation unit 3 can not be impacted and disturbed by the steam flow, and can be smoothly discharged from the cylinder through the water outlet 16, which reduces the possibility of wet steam bringing water into the steam flow again, and makes the water not disturbed by the steam flow and quickly discharged from the water outlet 16, thereby improving the quality of the outlet steam and the water discharge capacity.

[0040] In this embodiment, as shown in Figure 2 , a water inlet pipe 8 is arranged at the bottom of the steam-water separation unit 3 to facilitate the water flow into the water area.

[0041] In other embodiments, as shown in Figure 2As shown, the inner part of the barrel body 11 is further provided with a support unit 5, which is used to fix and support the steam-water separation unit 3. The support unit 5 comprises a support plate and a support cushion, wherein the support plate comprises a first support plate 51 and a second support plate 52, and the support cushion comprises a first support cushion 53 and a second support cushion 54. One end of the first support plate 51 and the second support plate 52 is respectively fixedly connected with the top of the steam-water separation unit 3, and the other end of the first support plate 51 and the second support plate 52 is respectively abutted with the inner wall of the barrel body 11 through the first support cushion 53 and the second support cushion 54, so as to support and fix the steam-water separation unit 3.

[0042] In other embodiments, as shown in FIG. 6, a plurality of saddle supports 17 are arranged at intervals below the barrel body 11 to support the entire barrel 1. Figure 1

[0043] In other embodiments, as shown in FIG. 6, a plurality of saddle supports 17 are arranged at intervals below the barrel body 11 to support the entire barrel 1. Figure 1

[0044] The various technical features in the above embodiments can be combined arbitrarily, as long as there is no conflict or contradiction between the features. However, due to the limited space, they are not described one by one.

[0045] In summary, the present application provides a horizontal steam-water separation device outside the furnace, which can greatly reduce the size of the steam-water separation device and improve the space utilization efficiency by adopting an elongated arrangement with a small diameter. Meanwhile, the flow separation unit and the sealing unit are arranged in the barrel to process the steam and separate the environment in the barrel, so as to improve the separation efficiency and the quality of the outlet steam.

[0046] The above only describes some embodiments of the present application, and does not limit the implementation and protection scope of the present application. Those skilled in the art should realize that any equivalent replacement and obvious changes based on the content of the present application should be included in the protection scope of the present application.​​

Claims

1. An out-of-furnace horizontal steam-water separation device, characterized by, The application relates to a steam-water separation device, which comprises a transversely arranged cylinder; steam inlets and outlets are arranged at the two ends of the cylinder respectively, the inside of the cylinder is provided with a steam-water separation unit and a flow distribution unit; the flow distribution unit divides the inside of the cylinder into a cylinder area and a flow distribution area, the steam inlet is arranged in the cylinder area, and the steam outlet is arranged in the flow distribution area; a drain port is arranged at the bottom of the cylinder; the steam-water separation unit is arranged in the flow distribution area and communicates with the drain port; the flow distribution unit is composed of an inlet and outlet baffle and a flow distribution plate; the inlet and outlet baffles are vertically arranged at the ends of the cylinder near the steam inlets and outlets respectively; the flow distribution plate is obliquely arranged in the cylinder and is vertically connected with the inlet and outlet baffles at the two ends; the flow distribution plate is a hole plate, the size of the holes of the hole plate gradually decreases from the end connected with the inlet baffle to the end connected with the outlet baffle; a sealing unit is further arranged in the cylinder, the sealing unit is arranged around the bottom of the steam-water separation unit, seals the space between the steam-water separation unit and the drain port, and forms a drain area; the sealing unit comprises a sealing plate and a sealing pad; one end of the sealing plate is fixedly arranged at the bottom of the steam-water separation unit, and the other end of the sealing plate is arranged around the inner wall of the cylinder around the drain port through the sealing pad; the sealing plate comprises a first sealing plate and a second sealing plate, and the sealing pad comprises a first sealing pad and a second sealing pad; the first sealing plate and the second sealing plate are arranged at the bottom of the steam-water separation unit, one end of the first sealing plate and the second sealing plate is fixedly connected with the bottom of the steam-water separation unit vertically, and the other end of the first sealing plate and the second sealing plate abuts against the inner wall of the cylinder around the drain port through the first sealing pad and the second sealing pad respectively; a supporting unit is further arranged in the cylinder, the supporting unit comprises a supporting plate and a supporting pad, the supporting plate is arranged at the top of the steam-water separation unit, and the other end of the supporting plate abuts against the inner wall of the cylinder through the supporting pad; the cylinder comprises a cylinder body and end covers arranged at the two ends of the cylinder body, namely a left end cover and a right end cover; the steam inlets and outlets are arranged at the positions corresponding to the axial direction of the cylinder body, the steam inlet is arranged on the right end cover, the steam outlet is arranged on the left end cover, and the steam inlet and the steam outlet are arranged in the axial direction of the cylinder body; an observation hole is arranged on the top side wall of the cylinder; when the steam-water separation device works, wet steam enters the right end cover from the steam inlet, is blocked by the inlet baffle, flows into the cylinder area from the lower left corner gap, then passes through the flow distribution plate to enter the flow distribution area, the flow distribution plate uniformly distributes the steam, finally the steam enters the steam-water separation unit, the steam-water separation unit separates the water in the wet steam to convert into dry steam, the steam humidity is greatly reduced, the dry steam is discharged from the steam outlet, the drain flows from the bottom of the steam-water separation unit to the drain port, and finally is discharged from the cylinder through the drain port.

2. An out-of-furnace horizontal steam-water separation device according to claim 1, characterized in that A safety valve interface is arranged on the top side wall of the cylinder.

3. An out-of-furnace horizontal steam-water separation device according to claim 1, characterized in that, A support is arranged at the bottom of the cylinder.

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