Cooling device for drainage expansion box of high-pressure condensing steam turbine

Abstract

The utility model belongs to the technical field of drainage expansion boxes, and particularly relates to a high-pressure condensing steam turbine drainage expansion box cooling device which comprises an expansion box, a drainage pipe fixedly installed on one side of the expansion box, a box body arranged at the end, away from the expansion box, of the drainage pipe, a stirring mechanism arranged on one side of the box body, and a spraying mechanism arranged on the top of the box body. A refrigerator is fixedly installed at the bottom of the box body, a plurality of sets of cooling fins are fixedly installed at the front end of the box body, a baffle is fixedly installed in a drain pipe, a plurality of sets of exhaust holes are formed in the baffle, a water inlet pipe is fixedly installed above the front end of the box body, a drain pipe is fixedly installed at the bottom of the box body, and a valve body is fixedly installed on the drain pipe. And a rotating rod is driven to rotate through a transmission belt, so that a transmission blade is driven to drive, cooling water in the box body is conveyed into a water spraying pipe and sprayed out through a spray head, and steam is cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of drain expansion boxes, in particular to a cooling device for a drain expansion box of a high-pressure condensing steam turbine. Background Art

[0002] Industrial steam turbines are used to drive driving equipment in industrial fields such as feed water pumps and compressors. They have the characteristics of complex working conditions and a wide range of speed changes. Industrial steam turbines can be divided into back-pressure steam turbines and condensing steam turbines according to the principle of thermal system, and can be divided into normal pressure steam turbines and high-pressure steam turbines according to steam inlet conditions. High-pressure condensing steam turbines are usually equipped with a drain expansion tank. The drains in each drain pipeline are collected and enter the drain collection pipe. The drain expansion tank is used for expansion and pressure reduction, thereby separating steam and drain. The separated drain and steam flow out of the drain expansion tank respectively.

[0003] The prior art has the following deficiencies: In the prior art, the "cooling device" with the publication number CN219974580U "includes a drain pipe, one end of which is provided with a mounting ring, the interior of which is provided with a water spray ring, the inner wall of which is provided with a plurality of water spray holes evenly distributed along its circumference, and the outer side of which is provided with a water supply assembly connected to the water spray ring":

[0004] When the above-mentioned equipment is in use, the end of the drain pipe away from the mounting ring is connected to the drain expansion box, and the steam in the drain expansion box is discharged by the drain pipe. At the same time, water is transported to the water spray ring through the water supply component and discharged through the water spray hole, thereby cooling the steam, avoiding the influence of the steam directly entering the air on the ambient temperature, and also preventing the occurrence of burns, thereby improving safety. However, after the water cools the steam, the temperature of the water will rise, and the water will be sprayed out through the water spray hole, which may easily cause scalds to the surrounding staff, and waste more resources, thereby increasing production costs. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a high-pressure condensing steam turbine drain expansion tank cooling device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure condensing steam turbine drain expansion box cooling device, comprising an expansion box, a drain pipe is fixedly installed on one side of the expansion box, a box body is provided at one end of the drain pipe away from the expansion box, a stirring mechanism is provided on one side of the box body, a spray mechanism is provided on the top of the box body, a refrigerator is fixedly installed on the bottom of the box body, a plurality of groups of heat sinks are fixedly installed on the front end of the box body, a baffle is fixedly installed inside the drain pipe, and a plurality of groups of exhaust holes are opened on the baffle;

[0007] A water inlet pipe is fixedly installed above the front end of the box body, a drainage pipe is fixedly installed at the bottom of the box body, and a valve body is fixedly installed on the drainage pipe.

[0008] As a preferred technical solution of the utility model, the stirring mechanism includes a driving motor, a rotating shaft and a stirring blade. The driving motor is fixedly mounted on the box body through a support rod. The rotating shaft is rotatably mounted inside the box body and extends to the outside of the box body and is fixedly connected to the output end of the driving motor. The stirring blade is fixedly mounted on the rotating shaft.

[0009] As a preferred technical solution of the utility model, the drain pipe is provided with openings at positions corresponding to the stirring mechanism and the spraying mechanism, and fixing plates are fixedly installed on both sides of the openings at the top.

[0010] As a preferred technical solution of the utility model, the spray mechanism includes a water spray pipe and multiple groups of nozzles. The water spray pipe is fixedly installed on the inner wall of the box between two groups of fixed plates, and the multiple groups of nozzles are evenly distributed and fixedly installed on the bottom of the water spray pipe.

[0011] As a preferred technical solution of the utility model, a transmission pipe is fixedly installed on the top of the box and extends to the inside of the box to communicate with the water spray pipe. The other end of the transmission pipe is fixedly installed at the bottom of the box and communicates with the box. Multiple sets of fixing frames are fixedly installed between the transmission pipe and the box.

[0012] As a preferred technical solution of the utility model, a rotating rod is rotatably installed inside the transmission tube, and one end of the rotating rod close to the driving motor extends to the outside of the transmission tube. A transmission belt is installed between the rotating rod and the rotating shaft, and a transmission blade is fixedly installed on the rotating rod, and the transmission blade is in contact with the inner wall of the transmission tube.

[0013] Compared with the prior art, the utility model provides a high-pressure condensing steam turbine drain expansion box cooling device, which has the following beneficial effects:

[0014] 1. A high-pressure condensing steam turbine drain expansion box cooling device, when the shaft rotates, drives the rotating rod to rotate through the transmission belt, thereby driving the transmission blades to drive, so that the cooling water inside the box is transported to the inside of the water spray pipe and sprayed out through the nozzle, thereby cooling the steam.

[0015] 2. A cooling device for a high-pressure condensing steam turbine hydrophobic expansion tank, in which the water after the steam is cooled flows into the interior of the tank through the opening at the bottom, and is cooled by a stirring mechanism and a refrigerator, and then the steam is sprayed again by a spray mechanism to cool it, thereby circulating the cooling water.

[0016] 3. A high-pressure condensing steam turbine drain expansion tank cooling device cools the water inside the tank by starting a refrigerator and increases the heat dissipation efficiency through a heat sink. At the same time, a driving motor is started to drive the rotating shaft to rotate, so that the stirring blades are driven to stir the water inside the tank, so that the water inside the tank can be evenly cooled, thereby increasing the cooling rate of the water inside the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 This is a rear view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the utility model from a top view;

[0020] Figure 4 It is a side view schematic diagram of the internal structure of the utility model.

[0021] In the figure: 1. expansion tank; 2. drain pipe; 201. opening; 3. box body; 301. water inlet pipe; 302. drain pipe; 4. stirring mechanism; 401. drive motor; 402. rotating shaft; 403. stirring blade; 5. spray mechanism; 501. water spray pipe; 502. nozzle; 6. transmission pipe; 601. rotating rod; 602. transmission belt; 603. transmission blade; 7. refrigerator; 8. heat sink; 9. baffle; 901. exhaust hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 In this embodiment: a high-pressure condensing steam turbine drain expansion box cooling device comprises an expansion box 1, a drain pipe 2 is fixedly installed on one side of the expansion box 1, a box body 3 is provided at one end of the drain pipe 2 away from the expansion box 1, a stirring mechanism 4 is provided on one side of the box body 3, a spray mechanism 5 is provided on the upper part of the box body 3, a refrigerator 7 is fixedly installed on the bottom of the box body 3, a plurality of heat sinks 8 are fixedly installed on the front end of the box body 3, a baffle 9 is fixedly installed inside the drain pipe 2, and a plurality of exhaust holes 901 are opened on the baffle 9;

[0024] A water inlet pipe 301 is fixedly installed on the front end of the box body 3 , a drain pipe 302 is fixedly installed on the bottom of the box body 3 , and a valve body is fixedly installed on the drain pipe 302 .

[0025] In this embodiment, the stirring mechanism 4 includes a driving motor 401, a rotating shaft 402 and a stirring blade 403. The driving motor 401 is fixedly installed on the box body 3 through a support rod. The rotating shaft 402 is rotatably installed inside the box body 3 and extends to the outside of the box body 3 and is fixedly connected to the output end of the driving motor 401. The stirring blade 403 is fixedly installed on the rotating shaft 402. The water inside the box body 3 is cooled by starting the refrigerator 7, and the heat dissipation efficiency is increased by the heat sink 8. At the same time, the driving motor 401 is started to drive the rotating shaft 402 to rotate, so that the stirring blade 403 is driven to stir the water inside the box body 3, so that the water inside the box body 3 can be evenly cooled, thereby increasing the cooling rate of the water inside the box body 3.

[0026] In this embodiment, the drain pipe 2 is provided with openings 201 at positions corresponding to the stirring mechanism 4 and the spraying mechanism 5, and fixing plates are fixedly installed on both sides of the top opening 201. The water after cooling the steam flows into the interior of the box body 3 through the bottom opening 201, and is cooled by the stirring mechanism 4 and the refrigerator 7, and then sprayed by the spraying mechanism 5 again to cool the steam, thereby circulating the cooling water.

[0027] In this embodiment, the spray mechanism 5 includes a water spray pipe 501 and multiple groups of nozzles 502. The water spray pipe 501 is fixedly installed on the inner wall of the box 3 between two groups of fixing plates, and the multiple groups of nozzles 502 are evenly distributed and fixedly installed at the bottom of the water spray pipe 501.

[0028] In this embodiment, the transmission pipe 6 is fixedly installed on the top of the box body 3 and extends to the inside of the box body 3 to communicate with the water spray pipe 501. The other end of the transmission pipe 6 is fixedly installed below the box body 3 and communicates with the box body 3.

[0029] In this embodiment, a rotating rod 601 is installed for rotation inside the transmission tube 6, and one end of the rotating rod 601 close to the driving motor 401 extends to the outside of the transmission tube 6. A transmission belt 602 is installed for transmission between the rotating rod 601 and the rotating shaft 402. A transmission blade 603 is fixedly installed on the rotating rod 601, and the transmission blade 603 is in contact with the inner wall of the transmission tube 6. A plurality of sets of fixing frames are fixedly installed between the transmission tube 6 and the box body 3. When the rotating shaft 402 rotates, the rotating rod 601 is driven to rotate by the transmission belt 602, thereby driving the transmission blade 603, so that the cooling water inside the box body 3 is transported to the inside of the water spray pipe 501 and sprayed out through the nozzle 502, thereby cooling the steam.

[0030] The working principle and use process of the utility model are as follows: when the steam inside the expansion tank 1 is discharged through the drain pipe 2, the water inside the box body 3 is cooled by starting the refrigerator 7, and the heat dissipation efficiency is increased by the heat sink 8. At the same time, the driving motor 401 is started to drive the rotating shaft 402 to rotate, so that the stirring blade 403 is driven to stir the water inside the box body 3, so that the water inside the box body 3 can be evenly cooled, and the cooling speed of the water inside the box body 3 is increased. At the same time, when the rotating shaft 402 rotates, the rotating rod 601 is driven to rotate by the transmission belt 602, thereby driving the transmission blade 603 to drive, so that the cooling water inside the box body 3 is transported to the inside of the water spray pipe 501, and sprayed through the nozzle 502, so as to cool the steam. The cooled steam is discharged through the exhaust hole 901, and the water after the steam is cooled flows into the inside of the box body 3 through the opening 201 at the bottom, and is cooled by the stirring mechanism 4 and the refrigerator 7, and then sprayed by the spray mechanism again to cool the steam, so as to circulate the cooling water.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-pressure condensing steam turbine drain expansion tank cooling device, comprising an expansion tank (1), a drain pipe (2) fixedly mounted on one side of the expansion tank (1), and a box body (3) disposed at one end of the drain pipe (2) away from the expansion tank (1), characterized in that: A stirring mechanism (4) is provided on one side of the box body (3), a spray mechanism (5) is provided on the upper part of the box body (3), a refrigerator (7) is fixedly installed on the bottom of the box body (3), a plurality of groups of heat sinks (8) are fixedly installed on the front end of the box body (3), a baffle (9) is fixedly installed inside the drain pipe (2), and a plurality of groups of exhaust holes (901) are opened on the baffle (9); A water inlet pipe (301) is fixedly mounted above the front end of the box body (3), a drainage pipe (302) is fixedly mounted at the bottom of the box body (3), and a valve body is fixedly mounted on the drainage pipe (302).

2. A high-pressure condensing steam turbine drain expansion tank cooling device according to claim 1, characterized in that: The stirring mechanism (4) comprises a driving motor (401), a rotating shaft (402) and a stirring blade (403); the driving motor (401) is fixedly mounted on the box body (3) via a support rod; the rotating shaft (402) is rotatably mounted inside the box body (3) and extends to the outside of the box body (3) to be fixedly connected to the output end of the driving motor (401); and the stirring blade (403) is fixedly mounted on the rotating shaft (402).

3. A high-pressure condensing steam turbine drain expansion tank cooling device according to claim 1, characterized in that: The drain pipe (2) is provided with openings (201) at positions corresponding to the stirring mechanism (4) and the spraying mechanism (5), and fixing plates are fixedly installed on both sides of the top of the opening (201).

4. A high-pressure condensing steam turbine drain expansion tank cooling device according to claim 1, characterized in that: The spray mechanism (5) comprises a water spray pipe (501) and a plurality of groups of spray heads (502); the water spray pipe (501) is fixedly mounted on the inner wall of the box body (3) between two groups of fixing plates; and the plurality of groups of spray heads (502) are fixedly mounted at the bottom of the water spray pipe (501) at equal intervals.

5. A high-pressure condensing steam turbine drain expansion tank cooling device according to claim 1, characterized in that: A transmission pipe (6) is fixedly mounted on the top of the box (3); the transmission pipe (6) extends to the interior of the box (3) and is connected to the water spray pipe (501); the other end of the transmission pipe (6) is fixedly mounted below the box (3) and is connected to the box (3); and a plurality of sets of fixing frames are fixedly mounted between the transmission pipe (6) and the box (3).

6. A high-pressure condensing steam turbine drain expansion tank cooling device according to claim 5, characterized in that: A rotating rod (601) is rotatably installed inside the transmission tube (6), and one end of the rotating rod (601) close to the driving motor (401) extends to the outside of the transmission tube (6). A transmission belt (602) is installed between the rotating rod (601) and the rotating shaft (402). A transmission blade (603) is fixedly installed on the rotating rod (601), and the transmission blade (603) is in contact with the inner wall of the transmission tube (6).

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