Energy-saving steam turbine unit waste steam waste heat recovery system

A technology of waste heat recovery system and steam turbine unit, which is applied in the field of exhaust steam recovery to achieve the effects of reducing flash steam volume, strong practicability, and improving economic benefits

Inactive Publication Date: 2021-10-01

陈丽群

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AI-Extracted Technical Summary

Problems solved by technology

[0005] The present invention aims to provide an energy-saving exhaust steam waste heat recovery system for steam turbine units, which a...

Abstract

The invention is suitable for the technical field of waste steam recovery, and discloses an energy-saving steam turbine unit waste steam waste heat recovery system. The system comprises a steam turbine unit, a waste steam separation system, a waste steam waste heat recovery system, an ejector, a water pump, a hot water supply port and a hot water return port; the hot water supply port communicates with the steam turbine unit; the waste steam separation system comprises a flash tank, a condensate water tank and a water cooling tank, the ejector comprises a first ejector and a second ejector, the first ejector and the water cooling tank are connected with the condensate water tank, and the condensate water tank is connected with the hot water return port; and the waste steam waste heat recovery system comprises a recovery tank and a pressurizing condenser, the recovery tank comprises an air inlet, an air outlet, a water outlet, an air valve and a spraying pipe, the air inlet is connected with the flash tank, the air outlet is connected with the pressurizing condenser, and the water outlet and the pressurizing condenser are connected with the hot water return port. According to the system, waste steam of multiple different output turbines can be recycled, pipeline laying is reduced, economic benefits are improved, meanwhile, the flash evaporation amount of high-pressure condensate water is reduced, and the recycling difficulty is reduced.

Application Domain

Steam regeneration

Technology Topic

Water tanksWater supply +11

Image

Examples

Experimental program(3)

Example Embodiment

[0030] Example one

[0031] See Figure 1 - Figure 8 In this embodiment, the present embodiment provides an energy-saving steam turbine bundle of auxiliary heat recovery system, including a steam turbine set 1, a tired thermal recovery system 3, a torch 4, a water pump 5, a hot water supply port 6, and Hot water retraction port 7; hot water supply port 6 is connected to the steam turbine unit 1; the tapper separation system 2 includes a flash tank 8, a condensate groove 9, a water cooling tank 10, and a pre-actuator 4 including the first lead The transmitter 401 and the second introducer 402, the first introducer 401 water-cooled tank 10, connected to the condensed water tank 9, the condensed water tank 9 is connected to the hot water back water 7; the sturdy waste heat recovery system 3 includes recovery tank 11, boost The condenser 12, the recovery tank 11 includes an intake port 1101, an air outlet 1102, a drain opening 1103, a gas valve 1104, a spray tube 13, an intake port 1101, and a flash tank 8, and air outlet 1102 and supercharged condensate The device 12 is connected, and the drain port 1103 and the booster condenser 12 are connected to the hot water retraction port 7; the water pump 5 includes a first water pump 501 and a second water pump 502.

[0032] The pre-acting system 14 is connected to the flash tank 8;

[0033] The pre-actuating system 14 can concentrate the condensed water of different pressure into a container, reduce the flash amount of high pressure condensed water, and reduce the difficulty of recycling.

[0034] The pre-actuation system 14 includes an inlet 15 and a water outlet 1401, and the inlet 15 includes a high pressure port 1501, a low pressure port 1502, and a regulator port 1503, and the high pressure port 1501 is connected to the second introducer 402, and the second lead The acoustic 402 and the steady port 1503 are connected to the water outlet 1401;

[0035] The low-voltage port 1502 is introduced by the high pressure port 1501, water vapor can increase the low pressure hydrophilic pressure, and the energy loss is minimized, and energy is saved.

[0036] The flash tank 8 is coupled to the first introducer 401, and the first introducer 401 is connected to the first water pump 501;

[0037] A small amount of high-pressure water is supplied with a water pump 5 to increase the water pressure to increase the water pressure to prevent etching.

[0038] The flicker can 8 is equipped with a liquid level sensor 801, and the bottom is connected to the electric hydraulic valve 802 and the second water pump 502; the liquid level sensor 801 is electrically connected to the electric hydraulic pressure valve 802;

[0039] The liquid level sensor 801 detects that the liquid pressure valve 802 is turned on when the liquid surface in the flash tank 8 is too low, so that the second water pump 502 is injected into the flash tank 8 to ensure the liquid level height.

[0040] The recovery tank 11 includes a mixer 1105 and a venture pipe 16, and a plurality of holes are opened, and the spray tube 13 and the intake pipe 16 are placed above the mixer 1105;

[0041] The mixer 1105 can make the cooling water ejected from the spray tube 13 with the full heat of the tedifance, and the waste heat of the tedifang is recovered.

[0042] The intake pipe 16 includes a pipe body 1601 and a gas separation screen 1602, the tube body 1601 is a L-type, the center of distribution screen 1602 is closed, and a hole is opened.

[0043] The pipe body 1601 and the distribution screen 1602 can expand the contact area of the tedifest and cooling water to improve the recovery efficiency.

[0044] The recovery tank 11 is equipped with pressure sensor 1106, and the pressure sensor 1106 is electrically connected to the air valve 1104;

[0045] The pressure sensor 1106 detects that the air valve 1104 is turned on to open the discharge to ensure the stability of the air pressure in the tank.

[0046] The emitter 4 includes a high pressure inlet 17, a low pressure inlet 18, a mixed outlet 20, a high pressure inlet 17, and a low pressure inlet 18, and the leading cavity 19, high pressure inlet 17, low pressure inlet 18, and mixed outlet 20 Connect the flange;

[0047] The high pressure condensed water and the low pressure condensed water enters the introduction chamber 19 through the high voltage inlet 17 and the low pressure inlet 18, and the two pressure is mixed from the mixed outlet 20; the flange is used to fix the collector 4.

[0048] The ejector 4 includes a mixing chamber 21, and the mixing chamber 21 is fixed to the leading chamber 19, and the mixing outlet is fixed to the mixing chamber 21, and the mixed outlet 20 is a flared shape, and the diameter of its outlet is greater than the mixing chamber 21;

[0049] High and low pressure fluids can be mixed in the mixing chamber 21, and the mixed outlet 20 is disposed to reduce the flow rate to uniform fluid flow.

[0050] When the present embodiment is operated, the condensed water generated during the operation of the steam turbine is first separated from pure condensate and the tedifest, and the condensed water containing a plurality of pressure containing the pre-actuation system 14 is guided by the pre-actuating system 14. After the neutralizing pressure, the flicker tank 8 is separated from the flexible can 8, since the flash tank 8 is low in the air pressure, the condensate saturated boiling produces soda separation, and the separated torched exhaust port is discharged through the exhaust port on the flash tank 8. After recovering the waste heat in the can 11, the isolated pure condensate flows into the condensed tank 9 through the first reflection device 401, and the water cooled tank 10 absorbs the waste heat, and after cooling, the hot water returns 7, the first introducer 401 is also in the first The water pump 501 is connected, and the first water pump 501 outputs a small amount of high pressure water to prevent cavitation from occurring in the first cantoscope; the liquid level sensor 801 is also equipped with a liquid level sensor 801, and when the condensed water is insufficient, the liquid level sensor 801 will The control electric hydraulic valve 802 opens the second water pump 502 to retain the liquid level height in the tank.

[0051] The separated ends into the lapheater waste heat recovery system 3, and the feeding of the gas pipe 16 is introduced into the recovery tank 11 through the gas pipe 16, and the cooling water sprayed with the mixer 1105 and the spray tube 13 is in contact with cooling. The drain port 1103 is discharged into the hot water returning port 7, and the remaining taps are discharged into the supercharged condenser 12 through the air opening 1102, which is condensed into hot water in boosting, flowing into the hot water back water 7; recovering tank 11 Press the pressure sensor 1106, the pressure sensor 1106 detects that the gas valve 1104 is turned on to open the discharge to ensure the stability of the air pressure in the tank.

Example Embodiment

[0052] Example 2

[0053] See figure 1 Embodiment 2 includes all of the structures and beneficial effects of the first example, and the same embodiment is in that the first cantervers 401 are also connected to the hydraulic switch 22, and the hydraulic switch 22 is connected to the heater 23.

[0054] When the water level in the flash tank 8 is too high, in order to ensure the normal operation of the flash tank 8, the liquid level sensor 801 controls the hydraulic switch 22 to open, the condensed water flows into the heater 23. The heater 23 can heat condensed water, the heated condensed water is then inflowing the pressurized valve 24, and the condensed water flows directly into the hot water supply port 6 after the pressurization, which is supplied to the steam unit 1 to supply overheating steam, thereby increasing flash The flow rate of the steam tank 8 drains, keep the condensate surface in the flash tank 8 in a stable height, and also utilizes the waste heat of condensed water.

[0055] Based on the first example, the beneficial effects provided in this example: Since the hydraulic switch 22 is used to control the hydraulic switch 22, the water level in the flash tank 8 does not exceed too much condensed water injected by the pre-actuation system 14. It causes the liquid surface too high flash steamed tank 8 to work properly, ensuring that the sturdy, waste heat recovery system can operate in high loads; since the hydraulic switch 22 is connected to the heater 23, excess condensed water can pass the heater 23 Heating, booster valve 24 is charged directly to the hot water supply port to supply overheating steam, reducing waste of heat.

Example Embodiment

[0056] Example three

[0057] See Figure 4 The third embodiment includes all structures and beneficial effects of the second embodiment, and the second embodiment is different from the second embodiment, and the spray tube 13 includes a sprinkler head 1301, a tube body 1302, and a temperature sensor 1303. The water pump 5 includes a third water pump 503; the tube body 1302 is coupled to the hydraulic valve 25 and the water pump 503, and the temperature sensor 1303 is mounted on the tube body 1302 and is electrically connected to the hydraulic valve 25.

[0058] The temperature sensor 1303 can adjust the amount of flow of the third water pump 503 by controlling the hydraulic valve 25 according to the torque temperature, thereby controlling the amount of sprinkler of the spray tube 13 cooling water, so that the lack of stereotyping heat can fully recover and do not cause waste of cooling water. .

[0059] The sprinkler 1301 is mounted on the tube body 1302, and the spray head 1301 is sprayed on the side of the cooling water. There is a plurality of spray mouths; the spray head 1301 can increase the spray area of the spray tube 13, thereby improving the lack of drum heat recovery. efficient.

[0060] Based on Examples One and Example 2, the beneficial effects provided in this example: Since the temperature sensor controls the hydraulic valve 25 to adjust the third water pump 503 to output flow, the temperature of the laminated air is output to the supercharging condenser 12 can be controlled in one The reasonable range, so that the boosts are sufficiently condensed, and the waste heat recovery efficiency is improved; since the spray head 1301 is sprayed on the side of the cooling water, there is a plurality of spray ports, so the spray area of the spray tube 13 is large, which helps The cooling water and the fed feast are well mixed in the recovery tank 11 to allow fast cooling, while do not cause waste of cooling water.

[0061] The advantageous effect provided by the present invention: First, since the pre-actuating system 14 collects the fatty steam of the steam turbine, the present invention can recover the fedeat of multiple different output steam turbines, reduce pipeline laying, improve economic efficiency, while decreased The amount of high pressure condensed water has reduced the difficulty of recycling, and the recovery efficiency of high-pressure taps is improved.

[0062] Next, since the flicker tank 8 is separated from the strip and condensed water, the condensed water and the tedifor can be recovered by the water-cooled tank 10 and the recovery tank 11, respectively, and the absorption efficiency is good, and the collector 4 is not subject to the condensed water. Merfan interference, the program is more reasonable.

[0063] Finally, since the recovery tank 11 recovers the larvaust waste heat in the mixer 1105 and the distribution screen 1602, the tachoflane and the cooling water can be fully contacted to ensure the recovery efficiency of the waste heat; due to the gas valve 1104, the recovery tank 11 is controlled, Therefore, the safety of the recovery tank 11 work has been guaranteed, and the device is practical.

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Energy-saving steam turbine unit waste steam waste heat recovery system

A technology of waste heat recovery system and steam turbine unit, which is applied in the field of exhaust steam recovery to achieve the effects of reducing flash steam volume, strong practicability, and improving economic benefits

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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