Automatic descaling device for steam turbine condenser

Abstract

The utility model provides an automatic descaling device for a steam turbine condenser, which belongs to the technical field of condensers and comprises a connecting frame, a water inlet chamber and a water outlet chamber are respectively arranged on two sides of the connecting frame and are connected through a plurality of condensing pipes, vibration devices are arranged above the water inlet chamber and the water outlet chamber, and the water inlet chamber and the water outlet chamber are communicated with each other. And the vibration device is connected with a plurality of condensed steam pipes. According to the utility model, the water scale of the condensing pipe can be automatically cleaned in a non-stop state, so that the normal use of equipment is prevented from being influenced by stop.

Description

Technical Field

[0001] The utility model belongs to the technical field of condensers, and in particular relates to an automatic descaling device for a steam turbine condenser. Background Art

[0002] The water-cooled surface condenser is mainly composed of the shell, tube bundle, hot well, water chamber and other parts. The exhaust steam of the steam turbine enters the shell through the throat, condenses into water on the cooling tube bundle and collects in the hot well, and is pumped out by the condensate pump. The cooling water enters the cooling tube bundle from the inlet water chamber and is discharged from the outlet water chamber. In order to ensure that a high vacuum and good heat transfer effect are maintained in the condenser during steam condensation, the inner wall of the condenser pipe will be in contact with the water source for a long time during heat exchange, which will cause scale to accumulate inside the condenser pipe, causing the condenser pipe to be blocked and affecting normal use.

[0003] At present, when cleaning the scale inside the condenser pipe, in order to ensure the thoroughness and safety of the cleaning, it is usually necessary to shut down the equipment for cleaning. It takes a long time to restart the equipment after shutdown and for the equipment to run smoothly, which affects the normal use of the equipment. Utility Model Content

[0004] In view of the defects or shortcomings in the prior art, the utility model provides an automatic descaling device for a steam turbine condenser, which can automatically clean the scale on the condenser pipe without stopping the machine, thereby avoiding the impact of shutdown on the normal use of the equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An embodiment of the utility model provides an automatic descaling device for a turbine condenser, comprising a connecting frame, wherein a water inlet chamber and a water outlet chamber are respectively arranged on both sides of the connecting frame, the water inlet chamber and the water outlet chamber are connected by a plurality of condensate pipes, and a vibration device is arranged above the water inlet chamber and the water outlet chamber, and the vibration device is connected to the plurality of condensate pipes.

[0007] Furthermore, the vibration device includes an ultrasonic transducer. Two ultrasonic transducers are provided and are respectively fixed above the water inlet chamber and the water outlet chamber by bolts. A shock-absorbing cover is provided on the outer side of the ultrasonic transducer.

[0008] Furthermore, a vibration tube is connected to the bottom of the ultrasonic transducer, and a plurality of vibration blocks are fixed on the vibration tube. The positions of the plurality of vibration blocks are arranged corresponding to the plurality of condensing pipes.

[0009] Furthermore, a through hole is provided on the vibration block, the diameter of the through hole is the same as the diameter of the condenser pipe, and the vibration block is sleeved on the outside of the condenser pipe.

[0010] Furthermore, a liquid storage box is also provided in the shock absorbing cover, the liquid storage box is located on one side of the ultrasonic transducer, and cleaning liquid is placed in the liquid storage box.

[0011] Furthermore, a liquid inlet pipe is provided at the bottom of the liquid storage box, and the liquid storage box is connected with the condensate pipe through the liquid inlet pipe.

[0012] Furthermore, limit plates are provided on both sides of the connection frame near the water inlet chamber and the water outlet chamber, and a plurality of limit holes are provided on the limit plates, and the plurality of limit holes are provided corresponding to the plurality of condensing pipes.

[0013] Furthermore, the inner diameter of the limiting hole is the same as the diameter of the condensing pipe, and both ends of the condensing pipe pass through the limiting holes on the limiting plate and are connected to the water inlet chamber and the water outlet chamber respectively.

[0014] Furthermore, a plurality of condenser pipes are arranged in a pyramid shape to increase the contact area between the water vapor and the condenser pipes.

[0015] Furthermore, a water collecting trough is provided below the connecting frame, and a drainage outlet is provided on one side of the water collecting trough.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model provides a vibration device, and connects the vibration device to the condenser pipe, and utilizes the vibration device to shake off the scale on the condenser pipe, so that the scale on the condenser pipe can be automatically cleaned without stopping the machine, thus avoiding the impact of shutdown on the normal use of the equipment.

[0018] 2. The utility model provides a liquid storage box for storing cleaning liquid, and connects the liquid storage box to the condensate pipe through a liquid inlet pipe, so as to dissolve the scale by the cleaning liquid, thereby avoiding the formation of large scale inside the condensate pipe and clogging the condensate pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the descaling device in the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the limiting plate in the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the vibration device in the embodiment of the utility model;

[0022] Figure 4 This is a diagram showing the position relationship between the liquid inlet pipe and the vibration block in the embodiment of the utility model;

[0023] Figure 5 This is a diagram showing the connection relationship between the liquid inlet pipe and the condensate pipe in the embodiment of the utility model;

[0024] Among them, 1. connecting frame; 2. water inlet chamber; 3. water outlet chamber; 4. water inlet pipe; 5. water outlet pipe; 6. condensate pipe; 7. limit plate; 8. limit hole; 9. turbine frame; 10. rotating shaft; 11. turbine blades; 12. energy-gathering shield; 13. water collecting trough; 14. drain outlet; 15. ultrasonic transducer; 16. shock-absorbing cover; 17. vibration tube; 18. vibration block; 19. through hole; 20. liquid storage box; 21. liquid inlet pipe. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] A typical implementation of the present utility model is as follows Figure 1 As shown, an automatic descaling device for a steam turbine condenser comprises a connecting frame 1, a water inlet chamber 2 and a water outlet chamber 3 are respectively arranged on both sides of the connecting frame 1, a water inlet pipe 4 is arranged at the bottom of the water inlet chamber 2, a water outlet pipe 5 is arranged at the bottom of the water outlet chamber 3, a plurality of condensing pipes 6 are arranged between the water inlet chamber 2 and the water outlet chamber 3, and the plurality of condensing pipes 6 are arranged in parallel, one end of the condensing pipe 6 is connected with the water inlet chamber 2, and the other end of the condensing pipe 6 is connected with the water outlet chamber 3, and the cooling water entering the water inlet chamber 2 from the water inlet pipe 4 enters the water outlet chamber 3 through the condensing pipe 6 and is discharged from the water outlet pipe 5.

[0027] Limiting plates 7 are provided on both sides of the connecting frame 1 near the water inlet chamber 2 and the water outlet chamber 3. Figure 2 As shown, a plurality of limiting holes 8 are provided on the limiting plate 7, and the plurality of limiting holes 8 are arranged corresponding to the plurality of condensing pipes 6. The inner diameter of the limiting hole 8 is the same as the diameter of the condensing pipe 6. Both ends of the condensing pipe 6 respectively pass through the limiting holes 8 on the limiting plate 7 and are connected to the water inlet chamber 2 and the water outlet chamber 3. The limiting plate 7 is used to limit the position of the condensing pipe 6 itself to prevent the condensing pipe 6 from falling off and shifting, which would reduce the cooling effect.

[0028] A turbine frame 9 is arranged above the connecting frame 1, a rotating shaft 10 is arranged in the turbine frame 9, and a plurality of turbine blades 11 are arranged side by side on the rotating shaft 10, and an energy-gathering shield 12 is arranged on the inner wall of the turbine frame 9, and the surface of the energy-gathering shield 12 is arc-shaped. Water vapor enters the turbine frame 9, and drives the rotating shaft 10 to rotate under the action of the turbine blades 11. Since the energy-gathering shield 12 is arranged on the inner wall of the turbine frame 9, the water vapor cannot rise, and flows downward under the action of the arc-shaped surface of the energy-gathering shield 12, enters the connecting frame 1, and contacts with the condensing pipe 6 in the connecting frame 1, exchanges heat with the cooling water in the condensing pipe 6, so that the water vapor is transformed into liquid and drips along the condensing pipe 6, and a water collecting tank 13 is arranged below the connecting frame 1, and a drain outlet 14 is arranged on one side of the water collecting tank 13. The liquid transformed from the water vapor drips into the water collecting tank 13 and is discharged from the drain outlet 14 to complete the cycle.

[0029] The multiple condenser pipes 6 are arranged in a pyramid shape, which increases the area of ​​the water vapor in contact with the condenser pipes 6 and improves the heat exchange efficiency.

[0030] When heat exchange is performed for a long time, the inner wall of the condenser pipe 6 will be in contact with the water source for a long time, thereby generating scale and accumulating inside the condenser pipe 6. In order to solve the above problem, the utility model is provided with a vibration device above the water inlet chamber 2 and the water outlet chamber 3. The vibration device is connected to multiple condenser pipes 6. The vibration device is used to shake off the scale in the condenser pipe 6 to avoid blockage of the condenser pipe 6.

[0031] Specifically, Figure 3 As shown, the vibration device includes an ultrasonic transducer 15. Two ultrasonic transducers 15 are provided and are respectively fixed on the water inlet chamber 2 and the water outlet chamber 3 by bolts. The ultrasonic transducer 15 adopts a common ultrasonic transducer on the market and can generate ultrasonic oscillations. A shock-absorbing cover 16 is provided on the outside of the ultrasonic transducer 15. The shock-absorbing cover 16 can absorb sound waves when the ultrasonic transducer 15 oscillates, thereby reducing the transmission of vibrations.

[0032] A vibration tube 17 is connected to the bottom of the ultrasonic transducer 15. When the ultrasonic transducer 15 is working, the vibration can be transmitted to the vibration tube 17. A plurality of vibration blocks 18 are fixed on the vibration tube 17. The positions of the plurality of vibration blocks 18 are arranged corresponding to the plurality of condensing pipes 6. A through hole 19 is opened on the vibration block 18. The inner diameter of the through hole 19 is the same as the diameter of the condensing pipe 6, so that the vibration block 18 can be sleeved on the outside of the condensing pipe 6. The ultrasonic vibration generated by the ultrasonic transducer 15 is transmitted to the condensing pipe 6 through the vibration tube 17 and the vibration block 18. After being subjected to the ultrasonic vibration, the scale and impurities on the inner wall of the condensing pipe 6 fall off the pipe wall of the condensing pipe 6, and enter the water outlet chamber 3 through the condensing pipe 6 under the flushing of cooling water, and are discharged from the water outlet pipe 5.

[0033] A liquid storage box 20 is also provided in the shock absorbing cover 16. The liquid storage box 20 is located on one side of the ultrasonic transducer 15. Cleaning liquid is placed in the liquid storage box 20, and the cleaning liquid can dissolve scale. A liquid inlet pipe 21 is provided at the bottom of the liquid storage box 20. The liquid storage box 20 is connected with the condenser pipe 6 through the liquid inlet pipe 21. When scale exists on the inner wall of the condenser pipe 6 and cannot fall off, the cleaning liquid in the liquid storage box 20 is sprayed into the inside of the condenser pipe 6 through the liquid inlet pipe 21. Under the flushing of cooling water, the cleaning liquid is fully in contact with the scale to dissolve the scale, thereby cleaning the inside of the condenser pipe 6 to avoid scale accumulation to produce large scale and block the condenser pipe 6.

[0034] like Figure 4 and Figure 5As shown, since the liquid inlet pipe 21 needs to be connected to multiple condensing pipes 6, the liquid inlet pipe 21 is provided with multiple liquid inlet pipe branches, and the multiple liquid inlet pipe branches are interconnected, and the liquid inlet pipe branches are fixed on the vibration block 18, and the ends of the liquid inlet pipe branches are connected to the condensing pipe 6 through the vibration block 18, thereby ensuring the stability of the liquid inlet pipe 21.

[0035] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. 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. An automatic descaling device for a steam turbine condenser, characterized in that: It comprises a connecting frame, wherein a water inlet chamber and a water outlet chamber are respectively arranged on both sides of the connecting frame, the water inlet chamber and the water outlet chamber are connected through a plurality of condensing pipes, a vibration device is arranged above the water inlet chamber and the water outlet chamber, and the vibration device is connected to the plurality of condensing pipes.

2. The automatic descaling device for a steam turbine condenser according to claim 1, characterized in that: The vibration device comprises an ultrasonic transducer. Two ultrasonic transducers are provided and are respectively fixed on the water inlet chamber and the water outlet chamber by bolts. A shock-absorbing cover is arranged on the outer side of the ultrasonic transducer.

3. The automatic descaling device for a steam turbine condenser according to claim 2, characterized in that: The bottom of the ultrasonic transducer is connected with a vibration tube, and a plurality of vibration blocks are fixed on the vibration tube. The positions of the plurality of vibration blocks are arranged correspondingly to the plurality of condensing pipes.

4. The automatic descaling device for a steam turbine condenser according to claim 3, characterized in that: The vibration block is provided with a through hole, the diameter of the through hole is the same as the diameter of the condensing pipe, and the vibration block is sleeved outside the condensing pipe.

5. The automatic descaling device for a steam turbine condenser according to claim 2, characterized in that: A liquid storage box is also arranged in the shock-absorbing cover. The liquid storage box is located at one side of the ultrasonic transducer, and cleaning liquid is placed in the liquid storage box.

6. The automatic descaling device for a steam turbine condenser according to claim 5, characterized in that: A liquid inlet pipe is arranged at the bottom of the liquid storage box, and the liquid storage box is connected with the condensation pipe through the liquid inlet pipe.

7. The automatic descaling device for a steam turbine condenser according to claim 1, characterized in that: Limiting plates are arranged at both sides of the connection frame near the water inlet chamber and the water outlet chamber. A plurality of limiting holes are opened on the limiting plates, and the plurality of limiting holes are arranged corresponding to the plurality of condensing pipes.

8. The automatic descaling device for a steam turbine condenser according to claim 7, characterized in that: The inner diameter of the limiting hole is the same as the diameter of the condensing pipe. Both ends of the condensing pipe pass through the limiting holes on the limiting plate and are connected to the water inlet chamber and the water outlet chamber.

9. The automatic descaling device for a steam turbine condenser according to claim 1, characterized in that: Multiple condenser pipes are arranged in a pyramid shape to increase the contact area between water vapor and the condenser pipes.

10. The automatic descaling device for a steam turbine condenser according to claim 1, characterized in that: A water collecting tank is arranged below the connecting frame, and a drainage port is arranged on one side of the water collecting tank.

Images