阅读说明：本技术 一种汽轮机用冷却水系统 (Cooling water system for steam turbine ) 是由 崔玉岭 张宪岭 颜刚 时标 梁学东 张允洲 葛宗琴 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种汽轮机用冷却水系统,涉及汽轮机冷却装置领域,本发明包括壳体,所述壳体与汽轮机末端固定连接；驱动机构、冷却机构、循环机构和收集机构；本发明通过驱动电机带动驱动扇叶进行转动,在分流平台的上方产生一定的负压空间,使得处于汽轮机内腔上层的热空气经由导流板被吸入壳体内部,再经由驱动扇叶的吹动效果向冷却机构处进行移动,增强了该装置的气体流动效果；当驱动扇叶吹过来的热气流接触到冷凝管后,将会对其进行冷却液化,并且再此接触的过程中,热气流的热量将会促使冷凝管中的冷凝液受热发生膨胀,使得冷凝管中的冷凝液能够获得一定的流动趋势,从而加强了冷却液的流动效果,使得冷凝管的冷却效果增强。(The invention discloses a cooling water system for a steam turbine, which relates to the field of steam turbine cooling devices and comprises a shell, wherein the shell is fixedly connected with the tail end of the steam turbine; the device comprises a driving mechanism, a cooling mechanism, a circulating mechanism and a collecting mechanism; according to the invention, the driving fan blades are driven to rotate by the driving motor, and a certain negative pressure space is generated above the shunting platform, so that hot air on the upper layer of the inner cavity of the steam turbine is sucked into the shell through the guide plate and then moves to the cooling mechanism through the blowing effect of the driving fan blades, and the gas flowing effect of the device is enhanced; after the hot air flow blown by the driving fan blade contacts the condenser pipe, the condenser pipe is cooled and liquefied, and in the contact process, the heat of the hot air flow can cause condensate in the condenser pipe to be heated and expand, so that the condensate in the condenser pipe can obtain a certain flowing trend, the flowing effect of the cooling liquid is enhanced, and the cooling effect of the condenser pipe is enhanced.)

1. A cooling water system for a steam turbine, comprising:

the cooling device comprises a shell (1), wherein the shell (1) is fixedly connected with the tail end of a steam turbine, the lower part of the shell (1) is fixedly connected with a cooling box (2), a guide plate (3) is fixedly connected to the left side of an inner cavity of the shell (1), the guide plate (3) is in a semi-circular arc shape, a shunting platform (4) is fixed on the right side wall of the guide plate (3), and a rotary groove (41) is formed in the right side of the shunting platform (4);

the driving mechanism (5), the said driving mechanism (5) is fixedly connected to the upper portion of right sidewall of the said deflector (3);

the cooling mechanism (6) is arranged in the middle of the flow dividing platform (4), the input end and the output end of the cooling mechanism (6) are communicated with the inner cavity of the cooling box (2), and the cooling mechanism (6) is used for cooling hot air in the steam turbine;

circulation mechanism (7), circulation mechanism (7) set up in inside reposition of redundant personnel platform (4), just circulation mechanism (7) inner chamber with cooling body (6) input inner chamber intercommunication, circulation mechanism (7) are used for circulating the inside cooling water flow of cooling body (6) and utilize.

Collect mechanism (8), collect mechanism (8) set up in casing (1) inner chamber right side wall, just collect mechanism (8) output with cooler bin (2) inner chamber intercommunication, collect mechanism (8) and be used for the recovery of cooling water flow.

2. The cooling water system for the steam turbine as claimed in claim 1, wherein the driving mechanism (5) comprises a driving motor (51) and driving blades (52), the driving motor (51) is fixedly connected to the upper portion of the right side wall of the deflector (3), and the driving blades (52) are fixedly connected to the output shaft end of the driving motor (51).

3. The cooling water system for the steam turbine as claimed in claim 1, wherein the cooling mechanism (6) comprises a condensation pipe (61), a water inlet pipe (62) and a water outlet pipe (63), the condensation pipe (61) is fixedly connected with the diversion platform (4), the condensation pipe (61) penetrates through the diversion platform (4), the water inlet pipe (62) is fixedly connected with the inner end of the condensation pipe (61), the output end of the water inlet pipe (62) penetrates through the diversion platform (4) and the inside of the rotary groove (41), the input end of the water inlet pipe (62) is communicated with the inside of the cooling tank (2), the water outlet pipe (63) is fixedly connected with the outer end of the condensation pipe (61), and the output end of the water outlet pipe (63) is communicated with the inside of the cooling tank (2).

4. A cooling water system for a steam turbine according to claim 3, characterized in that the cooling tank (2) is fixedly connected with a cooling pipe (21) on the inner side wall, and the length of the water outlet pipe (63) extending into the cooling tank (2) is less than the length of the water inlet pipe (62) extending into the cooling tank (2).

5. The cooling water system for the steam turbine as claimed in claim 4, wherein the circulating mechanism (7) comprises a connecting box (71), a rotating ring (72), driven fan blades (73) and drainage fan blades (74), the connecting box (71) is fixedly connected between the two sections of the water inlet pipes (62), the rotating ring (72) is rotatably connected to the middle of the side wall of the connecting box (71), the driven fan blades (73) are annularly arranged on the outer side wall of the rotating ring (72), the drainage fan blades (74) are annularly arranged on the inner side wall of the rotating ring (72), and the drainage fan blades (74) are provided in two groups.

6. A cooling water system for steam turbines according to claim 5, wherein said connection box (71) is disposed inside said rotary recess (41), and the outer diameter of said driven blades (73) is smaller than the inner diameter of said rotary recess (41).

7. The cooling water system for the steam turbine as claimed in claim 1, wherein the collecting mechanism (8) comprises a condensing plate (81), a sealing plate (82) and a drain pipe (83), the condensing plate (81) is fixedly connected to the right side wall of the inner cavity of the casing (1), the sealing plate (82) is fixedly connected to the bottom of the inner cavity of the casing (1), and the input end of the drain pipe (83) is fixedly connected between the condensing plate (81) and the sealing plate (82).

8. The cooling water system for the steam turbine as claimed in claim 7, wherein the sidewall of the condensation plate (81) is provided with diversion trenches (811), each diversion trench (811) is communicated with each other, the output end of the drain pipe (83) is communicated with the inside of the cooling tank (2), and the output end of the drain pipe (83) is arranged below the liquid level inside the cooling tank (2).

Technical Field

The invention relates to the technical field of steam turbine cooling devices, in particular to a cooling water system for a steam turbine.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and does work outwards at the same time, and the steam turbine is main equipment of a modern thermal power plant and is also used in metallurgical industry, chemical industry and ship power devices; the steam turbine is an external combustion rotary machine capable of converting steam heat energy into mechanical work, steam from a boiler enters the steam turbine and then sequentially passes through a series of annularly configured nozzles and movable blades to convert the heat energy of the steam into mechanical energy for rotating a rotor of the steam turbine, and the tail end of the steam turbine also needs to be cooled in the using process so as to ensure the normal operation of the steam turbine;

the terminal cooling device of current steam turbine unit is not good to the terminal cooling effect of steam turbine for the steam turbine temperature is overheated and leads to life's reduction, and be used for the unable effectual used cyclically of going on of condensate liquid among the cooling process, and the direct emission of the liquid after the steam cooling condenses can cause the waste of water resource in addition, is not conform to present sustainable development's requirement.

Disclosure of Invention

The invention aims to solve the problems that the cooling effect is poor, so that the temperature of a steam turbine is overheated to reduce the service life in the prior art; the condensate cannot be reasonably recycled; and the direct discharge of the steam after cooling and condensation causes the defect of water resource waste, and provides a cooling water system for a steam turbine.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cooling water system for a steam turbine, comprising:

the cooling device comprises a shell, a cooling box, a flow guide plate, a flow splitting platform and a cooling device, wherein the shell is fixedly connected with the tail end of a steam turbine, the lower part of the shell is fixedly connected with the cooling box, the left side of the inner cavity of the shell is fixedly connected with the flow guide plate, the flow guide plate is in a semi-circular arc shape, the right side wall of the flow guide plate is fixedly provided with the flow splitting platform, and the right side of the flow splitting platform is provided with a rotating groove;

the driving mechanism is fixedly connected to the upper part of the right side wall of the guide plate;

the cooling mechanism is arranged in the middle of the flow distribution platform, the input end and the output end of the cooling mechanism are both communicated with the inner cavity of the cooling box, and the cooling mechanism is used for cooling hot air in the steam turbine;

the circulation mechanism is arranged in the shunting platform, an inner cavity of the circulation mechanism is communicated with an inner cavity of the input end of the cooling mechanism, and the circulation mechanism is used for recycling cooling water flow in the cooling mechanism;

the collecting mechanism is arranged on the right side wall of the inner cavity of the shell, the output end of the collecting mechanism is communicated with the inner cavity of the cooling box, and the collecting mechanism is used for recovering cooling water flow.

Preferably, the driving mechanism comprises a driving motor and a driving fan blade, the driving motor is fixedly connected to the upper part of the right side wall of the guide plate, and the driving fan blade is fixedly connected to the output shaft end of the driving motor.

Preferably, cooling body includes condenser pipe, inlet tube and outlet pipe, the condenser pipe with reposition of redundant personnel platform fixed connection, just the condenser pipe runs through the reposition of redundant personnel platform, inlet tube fixed connection in tip in the condenser pipe, the inlet tube output runs through inside reposition of redundant personnel platform and the rotary groove, just the inlet tube input with the inside intercommunication of cooler bin, outlet pipe fixed connection in condenser pipe tip, just the outlet pipe output with the inside intercommunication of cooler bin.

Preferably, the cooling box inside wall fixedly connected with cooling tube, the outlet pipe stretches into length in the cooling box is less than the inlet tube stretches into length in the cooling box.

Preferably, circulation mechanism includes connecting box, swivel, driven fan blade and drainage fan blade, connecting box fixed connection in two sections between the inlet tube, the swivel rotate connect in connecting box lateral wall middle part, driven fan blade annular set up in the swivel lateral wall, drainage fan blade annular set up in the swivel inside wall, just the drainage fan blade is provided with two sets ofly.

Preferably, the connection box is disposed inside the rotation groove, and an outer diameter of the driven fan blade is smaller than an inner diameter of the rotation groove.

Preferably, the collecting mechanism comprises a condensation plate, a sealing plate and a drain pipe, the condensation plate is fixedly connected to the right side wall of the inner cavity of the shell, the sealing plate is fixedly connected to the bottom of the inner cavity of the shell, the input end of the drain pipe is fixedly connected between the condensation plate and the sealing plate, the output end of the drain pipe is communicated with the inside of the cooling box, and the output end of the drain pipe is arranged below the liquid level in the cooling box.

Preferably, diversion trenches are formed in the side wall of the condensation plate, each diversion trench is communicated with the other diversion trench, the output end of the drain pipe is communicated with the inside of the cooling box, and the output end of the drain pipe is arranged below the liquid level in the cooling box.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the driving fan blades are driven to rotate by the driving motor, and a certain negative pressure space is generated above the shunting platform, so that hot air on the upper layer of the inner cavity of the steam turbine is sucked into the shell through the guide plate and then moves to the cooling mechanism through the blowing effect of the driving fan blades, and the gas flowing effect of the device is enhanced; after the hot air flow blown by the driving fan blade contacts the condenser pipe, the condenser pipe is cooled and liquefied, and in the contact process, the heat of the hot air flow can cause condensate in the condenser pipe to be heated and expand, so that the condensate in the condenser pipe can obtain a certain flowing trend, the flowing effect of the cooling liquid is enhanced, and the cooling effect of the condenser pipe is enhanced.

2. The driving motor drives the driving fan blades to rotate, the driving force generated by the driving motor can enable the driven fan blades to rotate, so that the rotating ring drives the drainage fan blades to rotate simultaneously, water flow traction force can be generated in the connecting box, liquid in the cooling box is input into the condensing pipe through the water inlet pipe to form water circulation, the condensing pipe can continuously exert a cooling effect, the cooling effect of the condensing pipe is improved, the cooling liquid input by the water inlet pipe is all liquid below the liquid level in the cooling box, the cooling liquid output by the water outlet pipe is discharged on the upper layer of the liquid level in the cooling box, the liquid below the liquid level is output into the condensing pipe firstly, then the liquid above the liquid level gradually drops, and a cooling circulation can be formed by matching with the cooling effect of the cooling pipe, so that the energy consumption is reduced, the cooling effect of the device can be further improved.

3. According to the invention, under the action of thrust generated by the driving fan blades, liquid generated by cooling and liquefying on the condensing pipe is blown onto the condensing plate, so that part of air flow which is not effectively cooled and liquefied by the condensing pipe is cooled again, the air flow entering the lower part of the flow dividing platform is ensured to be dry, the liquid obtained after cooling and liquefying is dripped into the cavity formed between the condensing plate and the sealing plate and is discharged through the drain pipe, and the liquid enters the cooling box and is added into a cooling circulation system, so that resources can be reasonably utilized, and the requirements of sustainable development are met.

Drawings

FIG. 1 is a schematic view of the overall structure of a cooling water system for a steam turbine according to the present invention;

FIG. 2 is a schematic view of a front view of a half-section structure of a cooling water system for a steam turbine according to the present invention;

FIG. 3 is an enlarged schematic view of the area A in FIG. 2 illustrating a cooling water system for a steam turbine according to the present invention;

FIG. 4 is a schematic view of a partial sectional structure of a cooling water system for a steam turbine according to the present invention;

FIG. 5 is a schematic diagram of a top view, partially cut away and right view of a cooling water system for a steam turbine according to the present invention;

fig. 6 is a schematic top view, partially cut away, and partially viewed from the left, illustrating a cooling water system for a steam turbine according to the present invention.

In the figure: 1. a housing; 2. a cooling tank; 21. a cooling tube; 3. a baffle; 4. a shunting platform; 41. rotating the groove; 5. a drive mechanism; 51. a drive motor; 52. driving the fan blades; 6. a cooling mechanism; 61. a condenser tube; 62. a water inlet pipe; 63. a water outlet pipe; 7. a circulating mechanism; 71. a connection box; 72. rotating the ring; 73. a driven fan blade; 74. a fan blade is guided; 8. a collection mechanism; 81. a condensing plate; 811. a diversion trench; 82. a sealing plate; 83. and a water discharge pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, 2 and 3, a cooling water system for a steam turbine includes:

the steam turbine comprises a shell 1, wherein the shell 1 is fixedly connected with the tail end of a steam turbine, the lower part of the shell 1 is fixedly connected with a cooling box 2, the left side of the inner cavity of the shell 1 is fixedly connected with a flow guide plate 3, the flow guide plate 3 is in a semi-circular arc shape, the right side wall of the flow guide plate 3 is fixedly provided with a flow distribution platform 4, and the right side of the flow distribution platform 4 is provided with a rotating groove 41;

the driving mechanism 5 is fixedly connected to the upper part of the right side wall of the guide plate 3;

the cooling mechanism 6 is arranged in the middle of the flow dividing platform 4, the input end and the output end of the cooling mechanism 6 are both communicated with the inner cavity of the cooling box 2, and the cooling mechanism 6 is used for cooling hot air in the steam turbine;

the circulating mechanism 7 is arranged in the shunting platform 4, an inner cavity of the circulating mechanism 7 is communicated with an inner cavity of an input end of the cooling mechanism 6, and the circulating mechanism 7 is used for recycling cooling water flow in the cooling mechanism 6;

collect mechanism 8, collect mechanism 8 and set up in 1 inner chamber right side wall of casing, and collect 8 output of mechanism and 2 inner chambers of cooler bin intercommunication, collect 8 recovery that are used for cooling water stream of mechanism.

Through the arrangement of the structure, the hot air flow generated in the steam turbine can be cooled, the cold air is blown to the tail end of the steam turbine, the cooling effect is enhanced, the utilization rate of the steam turbine is improved, and the problem that the service life is reduced due to the fact that the temperature of the steam turbine is overheated is solved.

Referring to fig. 2 and 4, the driving mechanism 5 includes a driving motor 51 and a driving fan 52, the driving motor 51 is fixedly connected to the upper portion of the right sidewall of the baffle 3, and the driving fan 52 is fixedly connected to the output shaft end of the driving motor 51;

through the arrangement of the structure, when the driving motor 51 drives the driving fan blades 52 to rotate, a certain negative pressure space is generated above the shunting platform 4, so that hot air on the upper layer of the inner cavity of the steam turbine is sucked into the shell 1 through the guide plate 3, and then moves to the cooling mechanism 6 through the blowing effect of the driving fan blades 52, the gas flowing effect of the device is enhanced, and the cooling efficiency of the device is improved.

Referring to fig. 2, wherein the cooling mechanism 6 includes a condenser 61, a water inlet pipe 62 and a water outlet pipe 63, the condenser 61 is fixedly connected with the diversion platform 4, the condenser 61 penetrates through the diversion platform 4, the water inlet pipe 62 is fixedly connected to the inner end of the condenser 61, the output end of the water inlet pipe 62 penetrates through the diversion platform 4 and the inside of the rotary groove 41, the input end of the water inlet pipe 62 is communicated with the inside of the cooling box 2, the water outlet pipe 63 is fixedly connected to the outer end of the condenser 61, and the output end of the water outlet pipe 63 is communicated with the inside of the cooling box 2;

through the arrangement of the structure, after the hot air flow blown by the driving fan blades 52 contacts the condenser pipe 61 above the shunting platform 4, the hot air flow is cooled and liquefied, and in the contact process, the heat of the hot air flow can cause the condensate in the condenser pipe 61 to be heated and expand, so that the condensate in the condenser pipe 61 can obtain a certain flowing trend, the flowing effect of the cooling liquid is enhanced, the cooling effect of the condenser pipe 61 is enhanced, then the cooled and liquefied air flow can continuously move forwards, the condensate pipe 61 below the shunting platform 4 is contacted, the condensate pipe is cooled again, the tail end of the steam turbine is immediately discharged through the guide plate 3, and the cooling effect of the steam turbine is enhanced.

Referring to fig. 2, wherein the inner side wall of the cooling box 2 is fixedly connected with a cooling pipe 21, and the length of the water outlet pipe 63 extending into the cooling box 2 is less than the length of the water inlet pipe 62 extending into the cooling box 2;

through the setting of above-mentioned structure, can ensure that the coolant liquid of being the cooler bin 2 interior liquid level lower floor by the input of inlet tube 62, and the coolant liquid through outlet pipe 63 output will discharge the upper strata at the liquid level in cooler bin 2, thereby make liquid level lower floor's liquid take the lead to export in condenser pipe 61, then liquid level upper strata liquid descends gradually, and cooperate the cooling effect of cooling tube 21, can form a refrigerated circulation, the consumption of the energy has been reduced, the cooling effect of improvement the device that can be further.

Referring to fig. 2 and 3, the circulating mechanism 7 includes a connecting box 71, a rotating ring 72, driven fan blades 73 and two sets of drainage fan blades 74, the connecting box 71 is fixedly connected between the two sections of water inlet pipes 62, the rotating ring 72 is rotatably connected to the middle of the side wall of the connecting box 71, the driven fan blades 73 are annularly arranged on the outer side wall of the rotating ring 72, the drainage fan blades 74 are annularly arranged on the inner side wall of the rotating ring 72, and the drainage fan blades 74 are provided with two sets;

through the setting of above-mentioned structure, when driving motor 51 drives drive fan 52 pivoted, the impetus of its production will make driven fan blade 73 take place to rotate, thereby make swivel 72 take drainage fan blade 74 to take place to rotate simultaneously, when drainage fan blade 74 rotates, will promote rivers and move forward, and it is regional to form the negative pressure at the opposite side of drainage fan blade 74, then can be at the inside rivers appeal that produces of connecting box 71, make the liquid in cooler bin 2 pass through inlet tube 62 and input in to condenser pipe 61, form the hydrologic cycle, make the performance cooling effect that condenser pipe 61 can last, thereby the cooling effect of condenser pipe 61 has been improved.

Referring to fig. 4 and 5, the connection box 71 is disposed inside the rotation groove 41, and the outer diameter of the driven fan blade 73 is smaller than the inner diameter of the rotation groove 41;

through the arrangement of the structure, the driven fan blades 73 can be ensured to normally rotate, the collision between the driven fan blades and the side wall of the rotating groove 41 is avoided, and the running stability of the device is improved.

Referring to fig. 2, the collecting mechanism 8 includes a condensing plate 81, a sealing plate 82 and a drain pipe 83, the condensing plate 81 is fixedly connected to the right side wall of the inner cavity of the casing 1, the sealing plate 82 is fixedly connected to the bottom of the inner cavity of the casing 1, and the input end of the drain pipe 83 is fixedly connected between the condensing plate 81 and the sealing plate 82;

through the setting of above-mentioned structure, under the thrust effect that drive flabellum 52 produced, make the liquid that the cooling liquefaction produced on the condenser pipe 61 blow to on the condensing panel 81, make partly not cooled down the liquefied air current again by condenser pipe 61 effectively, ensure to get into the air current of reposition of redundant personnel platform 4 below and keep dry, and make the liquid after the cooling liquefaction drip inside the cavity that forms between condensing panel 81 and closing plate 82, and discharge it through drain pipe 83, make it get into in the inside cooling cycle's that adds system of cooler bin 2, thereby can be to the reasonable utilization of resource, accord with sustainable development's requirement more.

Referring to fig. 2 and 6, the sidewall of the condensation plate 81 is provided with guiding grooves 811, each guiding groove 811 is communicated with each other, the output end of the drain pipe 83 is communicated with the interior of the cooling box 2, the output end of the drain pipe 83 is arranged below the liquid level in the cooling box 2,

through the setting of above-mentioned structure, can ensure that the liquid after the cooling liquefaction drips smoothly to the cavity that forms between condensing panel 81 and closing plate 82 in to set up the output of drain pipe 83 in the inside liquid level below of cooler bin 2, can effectively avoid the air current in casing 1 to pass through drain pipe 83 and leak, improved the inside sealed effect of casing 1.

Referring to fig. 1-6, in the present invention, the driving motor 51 drives the driving fan 52 to rotate, and a certain negative pressure space is generated above the diversion platform 4, so that the hot air at the upper layer of the turbine inner cavity is sucked into the casing 1 via the guide plate 3, and then moves to the cooling mechanism 6 via the blowing effect of the driving fan 52, thereby enhancing the gas flowing effect of the device; when the hot airflow blown by the driving fan 52 contacts the condenser tube 61, the hot airflow is cooled and liquefied, and in the process of contacting again, the heat of the hot airflow causes the condensate in the condenser tube 61 to be heated and expanded, so that the condensate in the condenser tube 61 can obtain a certain flowing trend, the flowing effect of the cooling liquid is enhanced, and the cooling effect of the condenser tube 61 is enhanced;

and when the driving motor 51 drives the driving fan 52 to rotate, the driving force generated by the driving motor will make the driven fan 73 rotate, so that the rotating ring 72 drives the drainage fan 74 to rotate simultaneously, when the drainage fan 74 rotates, water flow is pushed to move forwards, a negative pressure area is formed on the other side of the drainage fan 74, and then water flow attraction can be generated inside the connecting box 71, so that the liquid in the cooling box 2 is input into the condensation pipe 61 through the water inlet pipe 62, water circulation is formed, the condensation pipe 61 can continuously exert a cooling effect, so that the cooling effect of the condensation pipe 61 is improved, the cooling liquid input by the water inlet pipe 62 is the liquid on the lower layer of the liquid level in the cooling box 2, the cooling liquid output by the water outlet pipe 63 is discharged on the upper layer of the liquid level in the cooling box 2, and the liquid on the lower layer of the liquid level is output into the condensation pipe 61 first, then the liquid on the upper layer of the liquid level gradually descends, and a cooling circulation can be formed by matching with the cooling effect of the cooling pipe 21, so that the energy consumption is reduced, and the cooling effect of the device can be further improved;

under the action of the thrust generated by the driving fan 52, the liquid generated by cooling and liquefying on the condensing pipe 61 is blown onto the condensing plate 81, so that part of the air flow which is not effectively cooled and liquefied by the condensing pipe 61 is cooled again, the air flow entering the lower part of the flow dividing platform 4 is ensured to be dry, the liquid obtained after cooling and liquefying drops into a cavity formed between the condensing plate 81 and the sealing plate 82, and is discharged through the drain pipe 83, and enters the cooling box 2 to be added into a cooling circulation system, so that the resources can be reasonably utilized, and the requirements of sustainable development are met; then, the cooled and liquefied gas flow moves forward to contact with the condensing pipe 61 below the flow dividing platform 4, and is cooled again, and then is discharged to the tail end of the steam turbine through the flow guide plate 3, so that the cooling effect of the steam turbine is enhanced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.