A desuperheater for a generator

Abstract

This utility model relates to the technical field of desuperheaters for desuperheating water, and discloses a desuperheater for generator desuperheating water, including a desuperheater body and a desuperheating water pipe fixedly installed at the lower end of the desuperheater body. One end of the desuperheating water pipe is fixedly connected to a tee. A first chamber is opened on the desuperheating water pipe. A pressurization pipe is provided at the lower end of the desuperheater body. A switching component for switching the desuperheating water pipeline is provided on the tee. A spray component is provided on the side wall of the pressurization pipe to increase the spray efficiency of the desuperheater body. A cleaning component is provided on the spray component to prevent the spray component from being blocked. By adding check valves on the high pressure inlet and high pressure outlet, the sudden increase in superheater temperature caused by the interruption of desuperheating water during the desuperheating water switching process is avoided, which greatly improves the safety performance of the unit.

Description

Technical Field

[0001] This utility model relates to the technical field of desuperheaters for desuperheating water, specifically a desuperheater for generator desuperheating water. Background Technology

[0002] A desuperheater is a device that uses water as a cooling medium to regulate the temperature of superheated or reheated steam. Its function is to control and maintain the superheated or reheated steam temperature at a specified value and to prevent the walls of the superheater and reheater tubes from overheating.

[0003] Currently, the main steam desuperheating water source in the electric field is divided into two paths. One path is the high-temperature inlet, where the desuperheating water temperature is low and the adjustment performance is good. The other path is the high-temperature outlet, where the desuperheating water temperature is high and it is easy to increase the main steam temperature. For safety reasons, only one path of desuperheating water is used normally. This severely impairs the flexibility of desuperheating water adjustment. Moreover, the nozzles of the desuperheater are very easy to get clogged during operation, which affects the spraying efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a desuperheater for generator desuperheating water, in order to solve the problem mentioned in the background art where the main steam desuperheating water source in the electric field is divided into two paths: one is a high-temperature inlet, where the desuperheating water temperature is low and the adjustment performance is good; the other is a high-temperature outlet, where the desuperheating water temperature is high and it is easy to increase the main steam temperature. For safety reasons, only one path of desuperheating water is used normally, which seriously impairs the flexibility of desuperheating water adjustment. Moreover, the nozzle of the desuperheater is very easy to be blocked during operation, thus affecting the spraying efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desuperheater for generator desuperheating water, comprising a desuperheater body and a desuperheating water pipe fixedly installed at the lower end of the desuperheater body, one end of the desuperheating water pipe being fixedly connected to a tee, a first chamber being formed on the desuperheating water pipe, a pressurizing pipe being provided at the lower end of the desuperheater body, a switching component for switching the desuperheating water pipeline being provided on the tee, a spray component for increasing the spray efficiency of the desuperheater body being provided on the side wall of the pressurizing pipe, and a cleaning component for preventing the spray component from being blocked being provided on the spray component.

[0006] Preferably, the switching component includes a first reducer fixedly disposed at one end of the tee, a first check valve disposed at one end of the first reducer, a first pipe connected to the high-pressure heater outlet at one end of the first check valve, and a second reducer fixedly disposed at the other end of the tee, a second check valve disposed at one end of the second reducer, and a second pipe connected to the high-pressure heater inlet at one end of the second check valve.

[0007] Preferably, the spray assembly includes a third reducer fixedly installed on the axial sidewall of the pressurization pipe, a connecting pipe fixedly installed at one end of the third reducer, a second chamber opened on the third reducer, four sliding grooves opened on the connecting pipe, a spray plate slidably installed on each of the four sliding grooves, a plurality of spray holes opened on the spray plate, and a spring provided between the spray plate and the four sliding grooves.

[0008] Preferably, the cleaning assembly includes two fixed rods fixedly installed on the inner wall of the connecting pipe, a baffle is fixedly installed between the two fixed rods, and a plurality of cleaning rods are fixedly installed on the side wall of the baffle, each of the plurality of cleaning rods having a through hole.

[0009] Preferably, the cleaning rod can enter the spray hole when the spray plate slides on the chute.

[0010] Preferably, the size of the cleaning rod is the same as the inner diameter of the spray hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By adding check valves on the high-pressure inlet and outlet, the sudden increase in superheater temperature caused by the interruption of desuperheating water during the switching process is avoided, which greatly improves the safety performance of the unit.

[0013] 2. The use of a third reducer and spray plate can increase the spray area, thereby improving the spraying efficiency. With the cooperation of spray holes, spray plate, chute and cleaning rod, the spray holes can be cleaned. Because the cleaning rod has through holes, the liquid can flow out while cleaning the spray holes. Then the spray plate returns to its original shape by the action of the spring and can continue to work. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the switching component of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the spray assembly of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the cleaning component of this utility model.

[0018] In the diagram: 1. Desuperheater body; 11. Desuperheating water pipe; 12. T-junction; 13. First chamber; 14. Pressurization pipe; 2. Switching assembly; 3. Spray assembly; 4. Cleaning assembly; 21. First reducer; 22. First check valve; 23. First pipe; 24. Second reducer; 25. Second check valve; 26. Second pipe; 31. Third reducer; 32. Connecting pipe; 33. Second chamber; 34. Slide groove; 35. Spray plate; 36. Spray hole; 37. Spring; 41. Fixing rod; 42. Baffle; 43. Cleaning rod; 44. Through hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figures 1-3 A desuperheater for generator desuperheating water includes a desuperheater body 1 and a desuperheating water pipe 11 fixedly installed at the lower end of the desuperheater body 1. One end of the desuperheating water pipe 11 is fixedly connected to a tee 12. A first chamber 13 is opened on the desuperheating water pipe 11. A pressurizing pipe 14 is provided at the lower end of the desuperheater body 1. A switching component 2 for switching the desuperheating water pipeline is provided on the tee 12. A spray component 3 for increasing the spray efficiency of the desuperheater body 1 is provided on the side wall of the pressurizing pipe 14. A cleaning component 4 for preventing the spray component 3 from being blocked is provided on the spray component 3.

[0021] The switching component 2 includes a first reducer 21 fixedly installed at one end of the tee 12, a first check valve 22 installed at one end of the first reducer 21, a first pipe 23 connected to the high-pressure heater outlet at one end of the first check valve 22, a second reducer 24 fixedly installed at the other end of the tee 12, a second check valve 25 installed at one end of the second reducer 24, and a second pipe 26 connected to the high-pressure heater inlet at one end of the second check valve 25.

[0022] In this embodiment: the existing main steam desuperheating water source is divided into two lines, one connected to the high-pressure heater inlet and the other to the high-pressure heater outlet. For safety reasons, only one line is used normally, which limits the flexibility of desuperheating water adjustment. By adding a first check valve 22 to the first pipe 23 connected to the high-pressure heater inlet and a second check valve 25 to the second pipe 26 connected to the high-pressure heater outlet, the problem of not being able to switch the desuperheating water source due to safety concerns during operation is solved. Before the check valves were added to both desuperheating pipes, if it was necessary to switch the desuperheating water source while one line was running and the unit was in operation, it was necessary to ensure that the two desuperheating pipes could not be opened simultaneously during the switching process to avoid series connection of the desuperheating pipes. The operator needed to first close the desuperheating water electric valve, and only after the electric valve on the other side was completely closed could the electric valve on the other side be opened. During this period, there would be a vacuum period for the desuperheating water, that is, when the electric valve on one side was completely closed and the electric valve on the other side was not opened, there was no desuperheating water to cool the superheater, and the superheater temperature might suddenly increase. Therefore, the operator generally would not switch from one desuperheating water line to the other. With the addition of a check valve to the outlet desuperheating pipeline, during the switching of desuperheating water, only the electric valve needs to be opened and closed, without having to consider the series connection issue, which greatly improves the flexibility of desuperheating water regulation. In this way, operators can flexibly switch the desuperheating water source according to the air temperature during operation.

[0023] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 2-4 The spray assembly 3 includes a third reducer 31 fixedly installed on the axial side wall of the pressurization pipe 14. A connecting pipe 32 is fixedly installed at one end of the third reducer 31. A second chamber 33 is opened on the third reducer 31. Four sliding grooves 34 are opened on the connecting pipe 32. A spray plate 35 is slidably installed on each of the four sliding grooves 34. A plurality of spray holes 36 are opened on the spray plate 35. A spring 37 is provided between the spray plate 35 and the four sliding grooves 34.

[0024] The cleaning component 4 includes two fixed rods 41 fixedly installed on the inner wall of the connecting pipe 32. A baffle 42 is fixedly installed between the two fixed rods 41. Several cleaning rods 43 are fixedly installed on the side wall of the baffle 42. Each of the cleaning rods 43 has a through hole 44.

[0025] When the spray plate 35 slides on the chute 34, the cleaning rod 43 can enter the spray hole 36. When the spray hole 36 on the spray plate 35 is blocked, the solution cannot be discharged and will push the spray plate 35 along the chute 34 toward the cleaning rod 43. At this time, the cleaning rod 43 cleans the spray plate 35.

[0026] The size of the cleaning rod 43 is the same as the inner diameter of the spray hole 36. When the cleaning rod 43 enters the spray hole 36, it can clean the inner wall of the spray hole 36.

[0027] In this embodiment: the use of a third reducer 31 and a spray plate 35 can increase the spray area, thereby improving the spray efficiency. However, prolonged use may cause the spray plate 35 to become clogged. At this time, the liquid cannot be sprayed out through the spray hole 36. Subsequently, the spray plate 35 will be pushed to slide on the two slide grooves 34 until the cleaning rod 43 enters the spray hole 36. Because the size of the cleaning rod 43 is consistent with the inner diameter of the spray hole 36, it can clean the spray hole 36. Since the cleaning rod 43 has a through hole 44, the liquid can flow out while cleaning the spray hole 36. Then, the spray plate 35 returns to its original shape by the action of the spring 37 and can continue to work. At this time, the spring 37 has a certain strength. Only when the spray hole 36 is clogged will the accumulation of solution cause the spray plate 35 to compress the spring 37.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A desuperheater for generator desuperheating water, comprising a desuperheater body (1) and a desuperheating water pipe (11) fixedly installed at the lower end of the desuperheater body (1), wherein one end of the desuperheating water pipe (11) is fixedly connected to a tee (12), a first chamber (13) is provided on the desuperheating water pipe (11), and a pressurizing pipe (14) is provided at the lower end of the desuperheater body (1), characterized in that: The tee (12) is equipped with a switching component (2) for switching the desuperheating water pipeline, and the side wall of the pressurizing pipe (14) is equipped with a spray component (3) to increase the spray efficiency of the desuperheater body (1). The spray component (3) is equipped with a cleaning component (4) to prevent the spray component (3) from being blocked.

2. A desuperheater for desuperheating water for a generator according to claim 1, characterized in that: The switching component (2) includes a first reducer (21) fixedly installed at one end of the tee (12), a first check valve (22) installed at one end of the first reducer (21), a first pipe (23) connected to the high pressure outlet at one end of the first check valve (22), a second reducer (24) fixedly installed at the other end of the tee (12), a second check valve (25) installed at one end of the second reducer (24), and a second pipe (26) connected to the high pressure inlet at one end of the second check valve (25).

3. A desuperheater for desuperheating water for a generator according to claim 1, characterized in that: The spray assembly (3) includes a third reducer (31) fixedly installed on the axial side wall of the pressurization pipe (14). A connecting pipe (32) is fixedly installed at one end of the third reducer (31). A second chamber (33) is opened on the third reducer (31). Four sliding grooves (34) are opened on the connecting pipe (32). A spray plate (35) is slidably installed on each of the four sliding grooves (34). A plurality of spray holes (36) are opened on the spray plate (35). A spring (37) is provided between the spray plate (35) and the four sliding grooves (34).

4. A desuperheater for desuperheating water for a generator according to claim 3, characterized in that: The cleaning assembly (4) includes two fixed rods (41) fixedly installed on the inner wall of the connecting pipe (32), and a baffle (42) is fixedly installed between the two fixed rods (41). Several cleaning rods (43) are fixedly installed on the side wall of the baffle (42), and each of the several cleaning rods (43) has a through hole (44).

5. A desuperheater for generator desuperheating water according to claim 4, characterized in that: When the spray plate (35) slides on the groove (34), it allows the cleaning rod (43) to enter the spray hole (36).

6. A desuperheater for desuperheating water for a generator according to claim 4, characterized in that: The size of the cleaning rod (43) is the same as the inner diameter of the spray hole (36).

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