Heating bath equipment using shaft seal heater for auxiliary heating

Abstract

The utility model discloses heating bathing equipment using a shaft seal heater for auxiliary heating, and belongs to the technical field of heating bathing systems. Comprising a shaft seal heater, water in a water tank is conveyed to a bathing heat exchanger through a bathing circulating pump, the water is subjected to primary heating through the bathing heat exchanger and then subjected to secondary heating through the shaft seal heater, and after hot water is conveyed to a bathing user to be used, the surplus hot water flows back to the water tank to be stored through a bathing water return pipeline; condensed water condensed after steam leakage of a steam seal at the shaft end of a steam turbine cylinder and steam leakage of a steam turbine adjusting steam valve rod release heat in a shaft seal heater flows back into the water tank and a floating ball valve in the water tank through a multi-stage water seal and a condensed water pipeline, water replenishing of the water tank can be automatically controlled, and the liquid level of the water tank is kept stable; the problems that a steam seal at the shaft end of a steam turbine cylinder leaks steam, a steam turbine adjusting steam valve rod leaks steam, the waste heat utilization efficiency is low, and the steam consumption of a heating bathing system is large are solved.

Description

Technical Field

[0001] The utility model relates to a heating system, in particular to a heating and bathing device which utilizes a shaft seal heater for auxiliary heating. Background Art

[0002] The existing shaft seal heater condenses the leakage steam from the turbine cylinder shaft end steam seal and the turbine regulating steam valve stem and then discharges it. Its cooling medium is generally condensate or circulating water. The water temperature of the condensate is about 55°C before heating, and the water temperature will increase by 2-3°C after heating, and the waste heat utilization effect is limited.

[0003] If the cooling medium is circulating water, the waste heat cannot be reused, and the circulating water temperature will increase, thereby increasing the heat exchange pressure of the cooling tower.

[0004] Therefore, those skilled in the art have proposed a heating and bathing device that uses a shaft seal heater for auxiliary heating to improve the existing system and reduce the demand for steam in the bathing heat exchanger and the winter heating heat exchanger. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a heating and bathing device that utilizes a shaft seal heater for auxiliary heating, which solves the current problems of low efficiency in utilizing waste heat from steam leakage at the cylinder shaft end seals of turbines and steam leakage at the valve stems of turbine regulating steam valves, and high steam consumption in the heating and bathing system. At the same time, the condensed water from steam leakage at the cylinder shaft end seals of turbines and steam leakage at the valve stems of turbine regulating steam valves can be effectively utilized to supplement the water loss in the heating and bathing system. In addition, the water quality of the heating and bathing system can be improved, corrosion and scaling of the equipment can be reduced, the service life of the equipment can be increased, the maintenance cycle of the equipment can be extended, and the decline in heat exchange efficiency of the heating heat exchanger, the bathing heat exchanger, and the shaft seal heater can be slowed down.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a heating and bathing equipment that uses a shaft seal heater for auxiliary heating, including a heating user, a shaft seal heater, a steam cylinder, a heating heat exchanger, a bathing heat exchanger, a bathing circulation pump, a heating circulation water pump, a heating make-up water pump, a bathing user, a water tank, a steam ejector, a throttling orifice plate, a multi-stage water seal and a float valve.

[0007] Furthermore, the saturated steam of the sub-cylinders is connected to the heating heat exchanger and the bathing heat exchanger through the heating steam pipeline and the bathing heating steam pipeline respectively, and the hot water and hot air are piped into the heating heat exchanger and the bathing heat exchanger through the heating steam pipeline and the bathing heating steam pipeline for convenient use.

[0008] Furthermore, the water tank is respectively connected to the heating circulation pump and the bathing circulation pump, and a heating water supply pump is arranged between the heating circulation pump and the water tank. Tap water is input into the water tank through the heating water supply pump and provided with circulation power through the heating circulation pump, and the circulating water is heated.

[0009] Furthermore, the heating circulation pump is connected to the heating heat exchanger, and the heating heat exchanger delivers the heating hot water to the heating users. The heating return water passing through the heating users is connected to the heating circulation pump through the heating return water pipeline.

[0010] Furthermore, the bathing circulation pump is connected to the bathing heat exchanger, and the bathing heat exchanger is connected to the shaft seal heater through a bathing hot water pipeline. The shaft seal heater delivers the bathing hot water to the bathing user through the bathing water supply pipeline, and the bathing hot water passing through the bathing user is connected to the water tank through the bathing return pipeline.

[0011] Furthermore, a steam ejector is provided on the shaft seal heater and is connected to a working steam pipeline. A throttling orifice is provided on the steam ejector and the working steam pipeline to control the flow route of the indoor heating steam.

[0012] Furthermore, the shaft seal heater is connected to the turbine shaft seal steam leakage pipeline to facilitate the discharge of excess gas to ensure equipment safety. The shaft seal heater is connected to the multi-stage water seal, the multi-stage water seal is connected to the water tank through the condensate pipeline, and the water tank is connected to the water tank water supply pipeline.

[0013] Furthermore, a float valve is provided in the water tank, and the water level in the water tank is observed through the float valve to facilitate water replenishment.

[0014] Furthermore, the turbine shaft seal steam leakage pipeline is connected to the turbine cylinder shaft end steam seal and the turbine regulating steam valve stem steam leakage pipeline, and is used to relieve pressure when the system pipeline pressure is too high, thereby ensuring the safe use of the equipment.

[0015] Furthermore, the working steam pipeline is connected to the 3.82MPa main steam pipeline and the 1.5MPa turbine extraction pipeline to provide working steam for the shaft seal heater.

[0016] Furthermore, the shaft seal heater structure consists of a steam ejector, a steam chamber, a water chamber, and a condensed water section, and is used to cool the steam in the shaft seal heater.

[0017] Furthermore, the sub-cylinder (2) is connected to a 0.5 MPa, 210° C. steam turbine exhaust pipeline.

[0018] Furthermore, the water tank water supply pipeline is connected to the desalted water pipeline and the domestic water pipeline.

[0019] The utility model discloses a heating and bathing device using a shaft seal heater for auxiliary heating, which has the following beneficial effects:

[0020] 1. The heating and bathing equipment using the shaft seal heater for auxiliary heating has simple technical transformation and low material cost. Through the rational series utilization of existing heating equipment, the use of the heating system is made safer, more reliable and energy-saving, and the demand for steam of the bathing heat exchanger and the winter heating heat exchanger is reduced, with obvious economic benefits.

[0021] 2. The heating and bathing equipment using the shaft seal heater for auxiliary heating effectively recycles and utilizes the condensed water from the steam leakage of the turbine cylinder shaft end seal and the steam leakage of the turbine regulating steam valve stem, which is beneficial to improving the water quality of the heating and bathing system, avoiding the generation of excessive scale in the pipes of the heating system that affects heat conduction, and can slow down the corrosion and scaling of the heating and bathing system, which is beneficial to extending the service life of various equipment in the heating and bathing system. At the same time, it can also extend the maintenance cycle of the heat exchanger and the shaft seal heater, and slow down the problem of declining heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the system of the utility model.

[0024] In the figure: 1. Heating user; 2. Steam cylinder; 3. Heating heat exchanger; 4. Bathing heat exchanger; 5. Shaft seal heater; 6. Bathing circulation pump; 7. Heating circulation pump; 8. Heating make-up water pump; 9. Bathing user; 10. Water tank; 11. Steam ejector; 12. Throttle orifice; 13. Multi-stage water seal; 14. Float valve; 15. Working steam pipeline; 16. Turbine shaft seal steam leakage pipeline; 17. Heating steam pipeline; 18. Bathing steam pipeline; 20. Heating return water pipeline; 21. Bathing hot water pipeline; 22. Bathing water supply pipeline; 23. Bathing return water pipeline; 24. Condensate pipeline; 25. Water tank make-up water pipeline. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] The embodiment of the utility model discloses a heating and bathing device using a shaft seal heater for auxiliary heating;

[0027] According to the attached Figure 1 As shown, it includes a heating user 1, a steam cylinder 2, a heating heat exchanger 3, a bathing heat exchanger 4, a shaft seal heater 5, a bathing circulation pump 6, a heating circulation pump 7, a heating water supply pump 8, a bathing user 9, a water tank 10, a steam ejector 11, a throttling orifice 12, a multi-stage water seal 13 and a float valve 14.

[0028] The saturated steam of the sub-cylinder 2 is 0.5MPa, 210℃ saturated steam supplied by the turbine exhaust.

[0029] The saturated steam of the sub-cylinder 2 is connected to the heating heat exchanger 3 and the bathing heat exchanger 4 through the heating steam pipeline 17 and the bathing heating steam pipeline 18 respectively, so as to supply them with the saturated steam required for heating.

[0030] The water tank 10 is connected to the heating circulation pump 7 and the bathing circulation pump 6 respectively to supply them with the water required by their respective systems.

[0031] A heating water supply pump 8 is provided between the heating circulation pump 7 and the water tank 10 to pressurize the water in the water tank 10 and supply it to the heating system to maintain the water pressure of the heating system stable. The heating circulation pump 7 is connected to the heating heat exchanger 3. The heating circulation pump 7 sends water into the heating heat exchanger 3 for heating. The heated water is sent to the heating user 1 for heat release and heating. The heating return water after heat release and heating by the heating user 1 is connected to the heating circulation pump 7 through the heating return water pipeline 20 to maintain normal water circulation in the heating system.

[0032] The bathing circulation pump 6 is connected to the bathing heat exchanger 4, and the bathing circulation pump 6 supplies water to the bathing heat exchanger 4 for heating. The bathing heat exchanger 4 is connected to the shaft seal heater 5 through the bathing hot water pipeline 21. The shaft seal heater 5 further heats the water, and the hot water is delivered to the bathing user 9 for use through the bathing water supply pipeline 22. After the bathing user 9 uses it, the surplus hot water is connected to the water tank 10 through the bathing return water pipeline 23 and stored in the water tank 10.

[0033] The shaft seal heater structure consists of a steam ejector 11, a steam chamber, a water chamber, and a condensate section.

[0034] The working fluids in the steam chamber and the water chamber flow in opposite directions in their respective chambers. The steam ejector 11 utilizes the Venturi tube principle. When high-speed airflow passes through, it sucks out the non-condensable gas in the steam chamber, establishes a negative pressure area, accelerates the flow of steam in the steam chamber, and improves the convective heat transfer. After the steam in the steam chamber releases heat, it is condensed into condensed water and discharged from the discharge port at the bottom.

[0035] The water flowing in the water chamber absorbs the heat released by the steam and is heated.

[0036] The shaft seal heater 5 is equipped with a steam ejector 11 connected to a working steam pipeline 15. A throttle orifice 12 is installed on both the steam ejector 11 and the working steam pipeline 15. The throttle orifice 12 reduces the pressure of the 3.82 MPa main steam and the 1.5 MPa turbine extraction steam to 1.0-1.5 MPa steam, which is used to extract non-condensable gases from the steam chamber of the shaft seal heater 5, creating a negative pressure area. The shaft seal heater 5 is connected to the turbine shaft seal leakage pipeline 16. Under the influence of the negative pressure inside the shaft seal heater 5, leakage steam from the turbine cylinder shaft end steam seal and the turbine regulating steam valve stem is continuously drawn in, participating in the heat exchange process and releasing heat to form condensate.

[0037] The shaft seal heater 5 is connected to the multi-stage water seal 13. The condensed water condensed by the steam in the shaft seal heater 5 is discharged to the multi-stage water seal 13. The condensed water flowing through the multi-stage water seal 13 acts as a negative pressure in the sealed shaft seal heater 5. The multi-stage water seal 13 is connected to the water tank 10 through the condensed water pipeline 24. The condensed water enters the water tank 10 through the condensed water pipeline 24. The water tank 10 is connected to the water tank water replenishment pipeline 25, and can be replenished with desalted water and domestic water.

[0038] A float valve 14 is provided in the water tank 10 to achieve automatic water replenishment and maintain a stable liquid level in the water tank 10 .

[0039] The working principle of this utility model is:

[0040] The water in the water tank 10 is transported to the bathing heat exchanger 4 through the bathing circulation pump 6. The water is heated once by the bathing heat exchanger 4 and then heated a second time by the shaft seal heater 5. After the hot water is delivered to the bathing user 9 for use, the excess hot water flows back to the water tank 10 for storage through the bathing return pipe 23. The water in the water tank 10 is again delivered to the bathing heat exchanger 4 by the bathing circulation pump 6 for heating and the next cycle is carried out.

[0041] The heat source of the shaft seal heater 5 comes from the leakage of the turbine cylinder shaft end steam seal and the leakage of the turbine regulating steam valve stem. The heat is relatively stable. The heat source of the bathing heat exchanger 4 comes from the 0.5MPa, 210℃ saturated steam of the sub-cylinder 2. The heat can be adjusted and controlled. The bathing water supply temperature is controlled by adjusting and controlling the amount of steam entering the bathing heat exchanger 4.

[0042] The condensed water condensed after the leakage of the turbine cylinder shaft end steam seal and the leakage of the turbine regulating steam valve stem releases heat in the shaft seal heater 5 and flows back into the water tank 10 through the multi-stage water seal 13 and the condensed water pipeline 24. The float valve 14 in the water tank 10 can automatically control the water replenishment of the water tank 10 to maintain the liquid level of the water tank 1 stable.

[0043] The water in the water tank 10 is replenished to the inlet of the heating circulation pump 7 through the heating water supply pump 8, and the heating circulation pump 7 transports the water to the heating heat exchanger 3 for heating. The heated hot water is sent to the heating user 1 to release heat for heating. The water after release of heat flows back to the inlet of the heating circulation pump 7 for the next circulation.

[0044] The heating water supply pump 8 replenishes the water with a certain temperature in the water tank 10 to the heating water system to make up for the water lost due to leakage, and adjusts and controls the amount of steam entering the heating heat exchanger 3 according to the outlet water temperature of the heating heat exchanger 3.

[0045] Through the above system, the waste heat of the steam leakage from the turbine cylinder shaft end steam seal and the steam leakage from the turbine regulating steam valve stem can be fully utilized. With the help of the water circulation process of the bathing system, the heat released by the condensation of the steam leakage from the turbine cylinder shaft end steam seal and the steam leakage from the turbine regulating steam valve stem can be continuously absorbed, thereby increasing the water temperature, reducing the steam consumption, and achieving energy-saving effects.

[0046] Through the above system, the condensed water condensed after the heat release of the steam leakage from the turbine cylinder shaft end steam seal and the steam leakage from the turbine regulating steam valve stem can be fully utilized to replenish the water lost in the heating and bathing system. At the same time, it can improve the water quality of the heating and bathing system, reduce the corrosion and scaling of the equipment, increase the service life of the equipment, extend the equipment maintenance cycle, and slow down the decline in heat exchange efficiency of the heating heat exchanger 3, the bathing heat exchanger 4 and the shaft seal heater 5.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A heating and bathing device using a shaft seal heater for auxiliary heating, comprising a heating user (1), a steam cylinder (2), a heating heat exchanger (3) and a bathing heat exchanger (4), characterized in that: The system further comprises a bathing circulation pump (6), a heating circulation pump (7), a heating water supply pump (8), a bathing user (9), a water tank (10), a steam ejector (11), a throttling orifice plate (12), a multi-stage water seal (13) and a float valve (14); The saturated steam of the sub-cylinder (2) is respectively connected to the heating heat exchanger (3) and the bathing heat exchanger (4) through the heating steam pipeline (17) and the bathing steam pipeline (18); the water tank (10) is respectively connected to the heating circulation pump (7) and the bathing circulation pump (6); a heating water supply pump (8) is provided between the heating circulation pump (7) and the water tank (10); the heating circulation pump (7) is connected to the heating heat exchanger (3); the heating heat exchanger (3) delivers the heating hot water to the heating user (1); and the heating return water passing through the heating user (1) is connected to the heating circulation pump (7) through the heating return water pipeline (20); The bathing circulation pump (6) is connected to the bathing heat exchanger (4), and the bathing heat exchanger (4) is connected to the shaft seal heater (5) via a bathing hot water pipeline (21). The shaft seal heater (5) delivers the bathing hot water to the bathing user (9) via the bathing water supply pipeline (22). The bathing hot water passing through the bathing user (9) is connected to the water tank (10) via the bathing return water pipeline (23); A steam ejector (11) is provided on the shaft seal heater (5) and connected to a working steam pipeline (15); a throttling orifice plate (12) is provided on the steam ejector (11) and the working steam pipeline (15); the shaft seal heater (5) is connected to a turbine shaft seal steam leakage pipeline (16); the shaft seal heater (5) is connected to a multi-stage water seal (13); the multi-stage water seal (13) is connected to a water tank (10) via a condensate pipeline (24); and the water tank (10) is connected to a water tank water supply pipeline (25); A float valve (14) is provided in the water tank (10).

2. The heating and bathing equipment using a shaft seal heater for auxiliary heating according to claim 1, characterized in that: The steam turbine shaft seal steam leakage pipeline (16) is connected to the steam turbine cylinder shaft end steam seal and the steam turbine regulating steam valve stem steam leakage pipeline.

3. The heating and bathing equipment using a shaft seal heater for auxiliary heating according to claim 1, characterized in that: The working steam pipeline (15) is connected to a 3.82MPa main steam pipeline and a 1.5MPa turbine extraction steam pipeline.

4. The heating and bathing equipment using a shaft seal heater for auxiliary heating according to claim 1, characterized in that: The shaft seal heater (5) structure consists of a steam ejector (11), a steam chamber, a water chamber, and a condensed water section.

5. The heating and bathing equipment using a shaft seal heater for auxiliary heating according to claim 1, characterized in that: The sub-cylinder (2) is connected to a 0.5 MPa, 210° C. steam turbine exhaust pipeline.

6. The heating and bathing equipment using a shaft seal heater for auxiliary heating according to claim 1, characterized in that: The water tank water supply pipeline (25) is connected to the desalted water pipeline and the domestic water pipeline.

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