A high-temperature cleaning device for a steam turbine main valve

Abstract

This utility model provides a high-temperature cleaning device for the main steam valve of a steam turbine, belonging to the field of steam turbine technology. It solves the technical problem that the delivery pipe of the cleaning device is difficult to store during use, leading to entanglement during pulling and requiring subsequent tidying. The device includes a main body with a first storage groove inside. Two sliding plates are symmetrically slidably connected inside the first storage groove. The same delivery pipe is slidably connected to the surfaces of the two sliding plates, and the delivery pipe is coiled in a serpentine pattern. A moving mechanism for moving the two sliding plates is provided on one side of the main body. A nozzle is fixedly connected to one end of the delivery pipe. A second storage groove is provided on the surface of the main body near the nozzle, and an adjusting mechanism for adjusting the nozzle is provided inside the second storage groove. In this utility model, the sliding plates prevent the delivery pipe from entangled during use.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine technology, and relates to the main steam valve, specifically a high-temperature cleaning device for the main steam valve of a steam turbine. Background Technology

[0002] The high-temperature cleaning device for steam turbine main steam valves is an advanced piece of equipment specifically designed for maintaining steam turbine main steam valves. This device effectively removes carbon deposits, impurities, and other contaminants from the surface and sealing parts of the main steam valve using high-temperature cleaning technology, thereby ensuring the sealing performance and operational safety of the steam turbine main steam valve. As a crucial valve controlling the entry of steam into the steam turbine, the performance of the main steam valve directly affects the turbine's operating efficiency and safety. The high-temperature cleaning device uses high-temperature liquid or thermochemical methods, resulting in thorough cleaning that is also easy to operate, significantly reducing turbine downtime for maintenance and improving equipment reliability and economy. With the development of the modern power industry, the role of the high-temperature cleaning device for main steam valves in steam turbine maintenance is becoming increasingly prominent, serving as an important technical means to ensure the safe and stable operation of power plants.

[0003] However, some existing high-temperature cleaning devices for main steam valves of steam turbines have delivery pipes that are not easy to store, which can easily lead to tangling during the pulling process. As a result, the delivery pipes need to be tidied up during use. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a high-temperature cleaning device for the main steam valve of a steam turbine. The technical problem to be solved by this utility model is that the conveying pipe of the cleaning device is not easy to store during use, which leads to the phenomenon of entanglement during the pulling process, so that the conveying pipe needs to be tidied up during use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-temperature cleaning device for the main steam valve of a steam turbine includes a main body. A first receiving groove is provided inside the main body. Two sliding plates are symmetrically slidably connected inside the first receiving groove. The surfaces of the two sliding plates are slidably connected to the same conveying pipe, which is coiled in a serpentine manner. A moving mechanism for moving the two sliding plates is provided on one side of the main body. A nozzle is fixedly connected to one end of the conveying pipe and slidably connected to the top of the main body. A second receiving groove is provided on the surface of the main body near the nozzle. An adjusting mechanism for adjusting the nozzle is provided inside the second receiving groove. The sliding plates prevent the conveying pipe from tangling during use.

[0007] As a further embodiment of this utility model, the moving mechanism includes a bidirectional lead screw and a support rod. The support rod is fixedly connected to the inside of a first storage groove, and the bidirectional lead screw is rotatably connected to the inside of the first storage groove. Two sliding plates are slidably sleeved on the surfaces of the bidirectional lead screw and the support rod. Each of the two sliding plates has a lead screw nut inside on the side near the bidirectional lead screw, and the lead screw nut and the bidirectional lead screw are mutually engaged. A first synchronous pulley is fixedly sleeved on one end of the bidirectional lead screw. A motor is fixedly connected inside the main body on the side near the first synchronous pulley. A second synchronous pulley is fixedly connected to the output shaft of the motor. The same first synchronous belt is sleeved on the surfaces of the second synchronous pulley and the first synchronous pulley. By setting up the bidirectional lead screw, the sliding plates can be moved.

[0008] As a further embodiment of this utility model, the adjusting mechanism includes two rollers, both of which are rotatably connected inside the second receiving groove. The conveying pipe is slidably connected between the two rollers. Gears are fixedly fitted on one side of each of the two rollers, and the two gears are configured to cooperate with each other. A rotating shaft is fixedly connected to one side of one of the gears, and a third synchronous wheel is fixedly fitted on the other end of the rotating shaft. A fourth synchronous wheel is fixedly fitted on the surface of the bidirectional lead screw near the third synchronous wheel. The same second synchronous belt is fitted on the surfaces of the fourth and third synchronous wheels. A pressure tank is fixedly connected to the other end of the conveying pipe. A one-way valve is fixedly connected to the surface of the pressure tank away from the conveying pipe. A water pump is fixedly connected to the other end of the one-way valve. The water pump is fixedly connected inside the main body, and a water tank is fixedly connected to the other end of the water pump. An inlet is provided on the top of the water tank. The conveying pipe can be adjusted by the arrangement of the rollers.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. This utility model employs a technical solution of constraining the conveying pipe with a sliding plate, thus preventing the conveying pipe from tangling during use. This effectively solves the problem that the conveying pipe of the cleaning device is difficult to store, leading to tangling during pulling and requiring tidying up during use. Two sliding plates are symmetrically installed on the surface of the bidirectional screw, and both sliding plates are connected to the bidirectional screw through a screw nut. When the bidirectional screw rotates, the two sliding plates can be brought closer together. The same conveying pipe is arranged between the two sliding plates in a serpentine winding manner. Therefore, when the two sliding plates are brought closer together, the conveying pipe can be released, allowing it to be pulled outward. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a high-temperature cleaning device for the main steam valve of a steam turbine proposed in this utility model;

[0012] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a high-temperature cleaning device for the main steam valve of a steam turbine proposed in this utility model;

[0013] Figure 3 This is a schematic diagram of the moving mechanism of a high-temperature cleaning device for the main steam valve of a steam turbine, as proposed in this utility model.

[0014] Figure 4 This is a schematic diagram of the adjustment mechanism of a high-temperature cleaning device for the main steam valve of a steam turbine, as proposed in this utility model.

[0015] In the diagram: 1. Main body; 2. Slide plate; 3. Nozzle; 4. Liquid inlet; 101. First collection tank; 102. Second collection tank; 201. Support rod; 202. Two-way lead screw; 203. Lead screw nut; 204. First synchronous pulley; 205. Motor; 206. Second synchronous pulley; 207. First synchronous belt; 301. Conveying pipe; 302. Roller; 303. Gear; 304. Shaft; 305. Third synchronous pulley; 306. Fourth synchronous pulley; 307. Second synchronous belt; 401. Water tank; 402. Water pump; 403. Check valve; 404. Pressure tank. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1 - Figure 4 A high-temperature cleaning device for the main steam valve of a steam turbine includes a main body 1. The main body 1 has a first receiving groove 101 inside. Two sliding plates 2 are symmetrically slidably connected inside the first receiving groove 101. The same conveying pipe 301 is slidably connected to the surface of the two sliding plates 2. The conveying pipe 301 is coiled in a serpentine shape. A moving mechanism for moving the two sliding plates 2 is provided on one side of the main body 1. A nozzle 3 is fixedly connected to one end of the conveying pipe 301. The main steam valve can be cleaned by the nozzle 3. The nozzle 3 is slidably connected to the top of the main body 1. A second receiving groove 102 is provided on the surface of the main body 1 near the nozzle 3. An adjusting mechanism for adjusting the nozzle 3 is provided inside the second receiving groove 102. The sliding plates 2 can prevent the conveying pipe 301 from getting tangled during use.

[0018] Preferably, the moving mechanism includes a bidirectional lead screw 202 and a support rod 201. The support rod 201 is fixedly connected to the inside of the first storage groove 101, and the bidirectional lead screw 202 is rotatably connected to the inside of the first storage groove 101. Two sliding plates 2 are slidably sleeved on the surfaces of the bidirectional lead screw 202 and the support rod 201. Each of the two sliding plates 2 has a lead screw nut 203 inside on the side near the bidirectional lead screw 202, and the lead screw nut 203 and the bidirectional lead screw 202 are mutually cooperated. A first synchronous pulley 204 is fixedly sleeved on one end of the bidirectional lead screw 202. A motor 205 is fixedly connected inside the main body 1 on the side near the first synchronous pulley 204. A second synchronous pulley 206 is fixedly connected to the output shaft of the motor 205. The same first synchronous belt 207 is sleeved on the surfaces of the second synchronous pulley 206 and the first synchronous pulley 204. The sliding plates 2 can be moved by the bidirectional lead screw 202.

[0019] Preferably, the adjusting mechanism includes two rollers 302, both of which are rotatably connected inside the second receiving groove 102. A conveying pipe 301 is slidably connected between the two rollers 302. Gears 303 are fixedly fitted on one side of each roller 302, and the two gears 303 are mutually engaged. A rotating shaft 304 is fixedly connected to one side of one of the gears 303, and a third synchronous pulley 305 is fixedly fitted on the other end of the rotating shaft 304. A fourth synchronous pulley 306 is fixedly fitted on the surface of the bidirectional lead screw 202 near the third synchronous pulley 305. The fourth synchronous pulley 306 and the third synchronous pulley 305... The same second synchronous belt 307 is fitted on the surface of the step wheel 305. The gear 303 can be rotated by the setting of the rotating shaft 304. The other end of the conveying pipe 301 is fixedly connected to the pressure tank 404. The surface of the pressure tank 404 away from the conveying pipe 301 is fixedly connected to the one-way valve 403. The other end of the one-way valve 403 is fixedly connected to the water pump 402. The water pump 402 is fixedly connected inside the main body 1. The other end of the water pump 402 is fixedly connected to the water tank 401. The top of the water tank 401 is provided with a liquid inlet 4. The conveying pipe 301 can be adjusted by the setting of the roller 302.

[0020] Working principle: When the main steam valve needs cleaning, motor 205 is started first. A first synchronous belt 207 is installed on the output shaft of motor 205, and the first synchronous belt 207 is connected to a double-acting lead screw 202. Thus, after motor 205 starts, the double-acting lead screw 202 rotates. Two sliding plates 2 are symmetrically installed on the surface of the double-acting lead screw 202, and both sliding plates 2 are connected to the double-acting lead screw 202 via lead screw nuts 203. Therefore, when the double-acting lead screw 202 rotates, the two sliding plates 2 move closer together. A common conveying pipe 301 is provided between the two sliding plates 2, and the conveying pipe 301 is arranged in a serpentine manner. Therefore, when the two sliding plates 2 move closer together, the conveying pipe 301 can be cleaned. The system releases the material to allow it to be pulled outward. A second synchronous belt 307 is installed at the other end of the bidirectional screw 202, and a rotating shaft 304 is provided at the other end of the second synchronous belt 307. Two rollers 302 are provided at one end of the conveying pipe 301, and both rollers 302 cooperate with the conveying pipe 301. Gears 303 are installed on one side of each roller 302, and one of the gears 303 is connected to the rotating shaft 304. Thus, when the bidirectional screw 202 rotates, the two rollers 302 will also rotate synchronously, thereby ensuring that the conveying pipe 301 can be conveyed outward. The sliding plate 2 ensures that only the required amount of conveying pipe 301 is conveyed, thus avoiding the phenomenon of entanglement.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-temperature cleaning device for the main steam valve of a steam turbine, comprising a main body (1), characterized in that, The main body (1) has a first storage groove (101) inside, and two sliding plates (2) are symmetrically connected inside the first storage groove (101). The two sliding plates (2) are slidably connected to the same conveying pipe (301). The conveying pipe (301) is snake-shaped. The main body (1) has a moving mechanism for moving the two sliding plates (2) on one side. One end of the conveying pipe (301) is fixedly connected to a nozzle (3). The nozzle (3) is slidably connected to the top of the main body (1). The main body (1) has a second storage groove (102) on the surface near the nozzle (3). The second storage groove (102) has an adjustment mechanism for adjusting the nozzle (3) inside.

2. The high-temperature cleaning device for the main steam valve of a steam turbine according to claim 1, characterized in that, The moving mechanism includes a bidirectional lead screw (202) and a support rod (201). The support rod (201) is fixedly connected to the inside of the first storage groove (101). The bidirectional lead screw (202) is rotatably connected to the inside of the first storage groove (101). Two sliding plates (2) are slidably sleeved on the surfaces of the bidirectional lead screw (202) and the support rod (201). Each of the two sliding plates (2) has a lead screw nut (203) inside on the side of the two sliding plates (2) near the bidirectional lead screw (202), and the lead screw nut (203) and the bidirectional lead screw (202) are configured to cooperate with each other.

3. The high-temperature cleaning device for the main steam valve of a steam turbine according to claim 2, characterized in that, One end of the bidirectional lead screw (202) is fixedly fitted with a first synchronous pulley (204). The main body (1) is internally fixedly connected to a motor (205) on the side near the first synchronous pulley (204). The output shaft of the motor (205) is fixedly connected to a second synchronous pulley (206). The surfaces of the second synchronous pulley (206) and the first synchronous pulley (204) are fitted with the same first synchronous belt (207).

4. The high-temperature cleaning device for the main steam valve of a steam turbine according to claim 3, characterized in that, The adjusting mechanism includes two rollers (302), both of which are rotatably connected inside the second receiving groove (102). The conveying pipe (301) is slidably connected between the two rollers (302). A gear (303) is fixedly sleeved on one side of each of the two rollers (302), and the two gears (303) are configured to cooperate with each other. A rotating shaft (304) is fixedly connected to one side of one of the gears (303).

5. The high-temperature cleaning device for the main steam valve of a steam turbine according to claim 4, characterized in that, The other end of the rotating shaft (304) is fixedly fitted with a third synchronous pulley (305), and the surface of the bidirectional lead screw (202) near the third synchronous pulley (305) is fixedly fitted with a fourth synchronous pulley (306). The surfaces of the fourth synchronous pulley (306) and the third synchronous pulley (305) are fitted with the same second synchronous belt (307).

6. The high-temperature cleaning device for the main steam valve of a steam turbine according to claim 5, characterized in that, The other end of the delivery pipe (301) is fixedly connected to a pressure tank (404). A one-way valve (403) is fixedly connected to the surface of the pressure tank (404) away from the delivery pipe (301). A water pump (402) is fixedly connected to the other end of the one-way valve (403). The water pump (402) is fixedly connected inside the main body (1). A water tank (401) is fixedly connected to the other end of the water pump (402). An inlet (4) is provided on the top of the water tank (401).

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