Atomization device of spray desuperheater

Abstract

The atomizing device comprises a furnace body and a water conveying pipe installed on the furnace body, the water conveying pipe extends to the furnace body, an atomizing nozzle is installed on the water conveying pipe, a plurality of water inlet holes are formed in the input end of the atomizing nozzle, a rotating plate is rotationally connected into the water conveying pipe, and the rotating plate is provided with a plurality of water outlet holes. The rotating plate is attached to the input end of the atomized spray, a plurality of water outlet holes coaxial with the water inlet holes are formed in the rotating plate, the driving device drives the rotating plate to rotate, the driving device comprises a rotating shaft fixedly connected to the rotating plate, the rotating shaft extends in the left-right direction, the rotating shaft is in transmission connection with a driving rod extending up and down, and the driving rod is in transmission connection with the rotating plate. The driving rod extends out of the furnace body and is connected with a driving motor installed outside the furnace body. The desuperheating water atomization function of the spray desuperheater can be achieved, the circulation area of the desuperheating water can be adjusted, and it is guaranteed that the desuperheating water is always kept in an atomization state.

Description

Technical Field

[0001] The utility model relates to the field of boiler desuperheaters, in particular to the field of atomizing nozzles, and specifically refers to an atomizing device for a water spray desuperheater. Background Art

[0002] The desuperheater is an important component in the boiler. It has two main functions: one is to adjust the steam temperature so that the temperature of the steam sent out by the boiler is within the specified range. The other is to protect the superheater, steam turbine, corresponding steam pipes and valves.

[0003] The water spray desuperheater is also called a mixed desuperheater. It sprays feed water directly into the superheated steam and mixes with the steam after atomization to achieve the purpose of cooling.

[0004] In the operation of boilers with large flue gas fluctuations, the amount of steam produced by the water spray desuperheater varies greatly, and the desuperheating water varies greatly. The desuperheating water is often sprayed out in large streams. When this water splashes onto the inner wall of the desuperheater, the wall temperature drops suddenly. When it stops hitting the water, the wall temperature rises again, causing the wall temperature to change repeatedly, which is very likely to cause fatigue cracks on the inner wall of the desuperheater tube box. Summary of the invention

[0005] The utility model aims at the deficiencies of the prior art and provides a water spray desuperheater atomizing device, which can realize the desuperheating water atomizing function of the water spray desuperheater and can adjust the desuperheating water flow area to ensure that the desuperheating water always maintains an atomized state.

[0006] The utility model is realized through the following technical scheme, and provides a water spray desuperheater atomizing device, comprising a furnace body and a water delivery pipe installed on the furnace body, the water delivery pipe extending into the furnace body, an atomizing nozzle installed on the water delivery pipe, a plurality of water inlet holes are provided at the input end of the atomizing nozzle, a rotating plate is rotatably connected in the water delivery pipe, the rotating plate is fitted with the input end of the atomizing spray, a plurality of water outlet holes coaxial with the water inlet holes are provided on the rotating plate, and also includes a driving device for driving the rotating plate to rotate.

[0007] The utility model transports cooling water into the furnace body by arranging a water delivery pipe, sprays the cooling water by arranging an atomizing nozzle, and the rotating plate can adjust the flow area of ​​the cooling water. When the water delivery amount is reduced, the rotating plate can be rotated to make a certain angle between the water inlet hole of the atomizing nozzle and the water outlet hole of the rotating plate, thereby increasing the flow rate of the cooling water passing through the nozzle, so that the cooling water reaches an atomized state.

[0008] As an optimization, the driving device includes a rotating shaft fixed to the rotating plate, the rotating shaft extends in the left-right direction, the rotating shaft is connected to a driving rod extending up and down, the driving rod extends outside the furnace body, and the driving rod is connected to a driving motor installed outside the furnace body. The setting of this optimization scheme enables the driving motor outside the furnace body to drive the driving rod to rotate, the driving rod drives the rotating shaft inside the furnace body to rotate, and the rotating shaft drives the rotating plate to rotate, thereby completing the process of driving the rotating plate to rotate.

[0009] As an optimization, the rotating shaft is connected to the driving rod through a bevel gear. The configuration of this optimization solution can make the rotating shaft extending horizontally and the driving rod extending vertically transmit the transmission.

[0010] As an optimization, a support disc is installed at the right end of the rotating plate, and the rotating shaft is rotatably connected to the support disc. The setting of this optimization scheme can support the left end of the rotating shaft, so that the rotating shaft can smoothly drive the rotating plate to rotate.

[0011] As an optimization, a support block is installed in the water pipe, and the driving device is supported on the support block. The setting of this optimization scheme can support the driving rod, bevel gear and rotating shaft in the driving device.

[0012] As an optimization, the rotating plate is installed at the reduced diameter of the atomizing nozzle. The arrangement of this optimization scheme can easily meet the flow rate requirement of the water supply flow passing through the atomizing nozzle.

[0013] As an optimization, a regulating valve is installed on the water pipe, and the driving motor of the driving device is electrically connected to the regulating valve. The setting of this optimization scheme can automatically adjust the rotation state of the rotating plate according to the water delivery volume of the water pipe.

[0014] The beneficial effects of the utility model are as follows: the device can realize the cooling water atomization function of the water spray cooler, and can adjust the cooling water flow area at the same time to ensure that the cooling water always maintains an atomized state, thereby increasing the service life of the cooler; the device is based on the original water spray cooler, and a rotating plate is added. When the valve opening of the regulating valve on the water pipe is the largest, the rotating plate is set to a fully open state, and the water inlet and the water outlet are coaxial. When the valve opening of the regulating valve on the water pipe gradually decreases, the rotating plate rotates accordingly according to the regulating valve opening, and a certain angle exists between the water inlet and the water outlet, thereby reducing the cooling water flow area and increasing the flow rate of the cooling water through the nozzle, so that the cooling water reaches an atomized state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection of various components at the atomizing nozzle;

[0017] Figure 3It is a schematic diagram of the connection between the rotating plate and the rotating shaft;

[0018] Figure 4 It is a schematic diagram of the connection between the supporting disc and the rotating shaft;

[0019] As shown in the figure:

[0020] 1. furnace body, 2. water pipe, 3. atomizing nozzle, 4. driving device, 41. rotating shaft, 42. driving rod, 43. bevel gear, 44. supporting disc, 5. rotating plate. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0022] like Figures 1 to 4 The utility model is shown as a water spray desuperheater atomizing device, comprising a furnace body 1 and a water pipe 2 installed on the furnace body, the furnace body 1 extends in the left-right direction, the water pipe extends into the furnace body 1, the water pipe 2 extends in the up-down direction, the contact between the water pipe 2 and the furnace body 1 is sealed, an atomizing nozzle 3 is installed on the water pipe, the atomizing nozzle 3 is installed at the lower end of the water pipe 2, the atomizing nozzle 3 extends in the left-right direction, the input end of the atomizing nozzle 3 is fixedly connected to the water pipe 2, and a plurality of water inlet holes are provided at the input end of the atomizing nozzle 3.

[0023] A rotating plate 5 is rotatably connected in the water delivery pipe 2, and the rotating plate 5 is installed at the reduced diameter of the atomizing nozzle 3. The rotating plate 5 extends in the up and down direction, and is installed at the right end of the atomizing nozzle 3. The rotating plate 5 fits the input end of the atomizing spray 3, and a plurality of water outlet holes coaxial with the water inlet hole are opened on the rotating plate 5. When the water delivery volume is maximum, the water inlet hole of each atomizing nozzle 3 is coaxial with the corresponding water outlet hole of the rotating plate 5, and a shaft hole is opened at the axial position of the rotating plate 5. The water outlet hole includes an inner circular hole and an outer circular hole. The diameter of the outer circular hole is larger than that of the inner circular hole. The outer circular hole is located on the outside of the inner circular hole. The inner circular hole and the outer circular hole are evenly distributed along the circumference of the shaft hole, and the water inlet hole of the atomizing nozzle 3 is the same size as the water outlet hole of the rotating plate 5.

[0024] The present embodiment further includes a driving device 4 for driving the rotating plate 5 to rotate, the driving device including a rotating shaft 41 fixedly connected to the rotating plate 5, the left end of the rotating shaft 41 being installed in the rotating shaft hole of the rotating plate 5, the rotating shaft extending in the left-right direction, the right end of the rotating shaft being fixedly connected with a bevel gear 43, the rotating shaft being transmission-connected with a driving rod 42 extending up and down, the lower end of the driving rod being fixedly connected with a bevel gear 43, the rotating shaft being transmission-connected with the driving rod 42 via the bevel gear 43.

[0025] The driving rod 42 extends outside the furnace body 1, and the driving rod is connected to a driving motor installed outside the furnace body. The upper end of the driving rod 42 is fixedly connected to the output shaft of the driving motor. A high-performance rotating shaft sealing ring is installed at the connection between the driving rod and the water pipe 2. A high-performance rotating shaft sealing ring is installed at the connection between the driving rod and the furnace body 1. The high-performance rotating shaft sealing ring is a prior art. This special sealing element is usually used for sealing a rotating shaft. This sealing ring has good high temperature resistance, corrosion resistance, wear resistance and other properties, and can effectively prevent leakage of the working medium.

[0026] A support disc 44 is installed at the right end of the rotating plate 5, and the support disc is fixedly connected to the inner wall of the water pipe 2. The rotating shaft is rotatably connected to the support disc 44. The support disc includes a support outer ring fixedly connected to the inner wall of the water pipe, and the support outer ring is fixedly connected to a rotating bearing, and the rotating shaft is installed in the rotating bearing. A support block is installed in the water pipe, the driving device 4 is supported on the support block, the support block is fixed in the water pipe 2, the rotating shaft 41 is rotatably connected to the support block, the driving rod 42 is rotatably connected to the rotating shaft, and the bevel gear 43 is installed in the support block.

[0027] A regulating valve is installed on the water pipe 2, and the driving motor of the driving device 4 is electrically connected to the regulating valve. When the regulating valve is opened to the maximum, the rotating plate 5 is set to a fully open state, that is, the water outlet of the rotating plate 5 is coaxial with the water inlet of the atomizing nozzle 3. When the valve opening of the regulating valve on the water pipe 2 gradually decreases, the rotating plate 5 rotates accordingly according to the opening of the regulating valve.

[0028] During use of this embodiment, the rotating plate 5 can rotate accordingly according to the opening of the regulating valve. When the regulating valve is opened to the maximum, the water outlet of the rotating plate 5 is coaxial with the water inlet of the atomizing nozzle 3. When the opening of the regulating valve gradually decreases, the driving motor drives the driving rod 42 to rotate. The driving rod 42 drives the rotating shaft 41 to rotate through the bevel gear 43. The rotation of the rotating shaft 41 drives the rotating plate 5 to rotate, so that the water outlet of the rotating plate 5 and the water outlet of the atomizing nozzle 3 have a certain angle, thereby reducing the flow area of ​​the cooling water in the water pipe 2, and increasing the flow rate of the cooling water entering the atomizing nozzle 3, so that the cooling water sprayed from the atomizing nozzle 3 always remains in an atomized state.

[0029] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A water spray desuperheater atomizing device, Features: The invention comprises a furnace body (1) and a water pipe (2) installed on the furnace body, the water pipe extending into the furnace body (1), an atomizing nozzle (3) installed on the water pipe, a plurality of water inlet holes provided at the input end of the atomizing nozzle (3), a rotating plate (5) rotatably connected in the water pipe, the rotating plate being in contact with the input end of the atomizing spray, a plurality of water outlet holes coaxial with the water inlet holes provided on the rotating plate (5), and a driving device (4) for driving the rotating plate (5) to rotate.

2. A water spray desuperheater atomizing device according to claim 1, Features: The driving device comprises a rotating shaft (41) fixedly connected to a rotating plate, the rotating shaft extending in a left-right direction, the rotating shaft being drivingly connected to a driving rod (42) extending up and down, the driving rod (42) extending outside the furnace body (1), and the driving rod being connected to a driving motor installed outside the furnace body (1).

3. A water spray desuperheater atomizing device according to claim 2, Features: The rotating shaft is transmission-connected to the driving rod (42) via a bevel gear (43).

4. A water spray desuperheater atomizing device according to claim 2, Features: A supporting disc (44) is mounted on the right end of the rotating plate (5), and the rotating shaft is rotatably connected to the supporting disc (44).

5. A water spray desuperheater atomizing device according to claim 1, Features: A support block is installed in the water delivery pipe, and the driving device (4) is supported on the support block.

6. A water spray desuperheater atomizing device according to claim 1, Features: The rotating plate (5) is installed at the reduced diameter portion of the atomizing nozzle (3).

7. A water spray desuperheater atomizing device according to claim 2, Features: A regulating valve is installed on the water delivery pipe (2), and a driving motor of the driving device (4) is electrically connected to the regulating valve.

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