CN218324983U - Steam turbine exhaust waste heat recycling device - Google Patents

Abstract

The utility model discloses a steam turbine exhaust waste heat recovery utilizes device, including current garden heater, newly-increased garden surface formula heater, exhaust apparatus, heat supply network water inlet channel, heat supply network water return water pipeline, tee bend, manual stop valve and bypass electrically operated gate, newly-increased garden heater is fixed to be located in the exhaust apparatus, the inlet channel of current garden heater, newly-increased garden surface formula heater advance, the return water pipeline passes through the tee junction, newly-increased garden surface formula heater advance, be equipped with manual stop valve on the return water pipeline, newly-increased garden heater and current garden heater parallel arrangement. The utility model belongs to the technical field of waste heat recovery, specifically indicate one kind to the steam turbine exhaust recycle, conversion efficiency is high, green's steam turbine exhaust waste heat recovery device.

Description

Steam turbine exhaust waste heat recycling device

Technical Field

The utility model belongs to the technical field of waste heat recovery, specifically indicate a steam turbine exhaust waste heat recovery utilizes device.

Background

With the rapid development of the electric power industry in China, a large number of air-cooling power stations are built in areas rich in coal and water in China, and the air-cooling power stations mainly adopt direct air-cooling turbines for power generation. The direct air cooling steam turbine exhaust pipeline is long in distance and large in pipeline resistance, the air cooling condenser is large in area and large in relative air leakage, so that the oxygen content of condensed water of the air cooling condenser is seriously exceeded, equipment and pipelines are corroded to a certain degree, the super-cooling degree of the condensed water is increased due to the large pipeline resistance, and the economical efficiency of a unit is reduced. For this purpose, the air cooling system of the steam turbine is equipped with a steam exhaust device with a condensate heating and oxygen removal device.

After the steam turbine exhausts, the steam is excessively introduced into the air cooling island through the steam exhaust device, the air cooling island uses air as a coolant to cool the steam turbine exhaust, and the steam turbine exhaust is condensed and then returns to the steam exhaust device for recycling. In conclusion, the heat of the exhaust steam of the steam turbine can be effectively recycled, the heat efficiency of the air cooling unit can be effectively improved, and the device for recycling the exhaust steam waste heat of the steam turbine is designed on the basis to directly convert and utilize the heat.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a carry out recycle to the steam turbine exhaust, conversion efficiency is high, green's steam turbine exhaust waste heat recovery utilizes device.

In order to realize the functions, the utility model discloses the technical scheme who takes as follows: the utility model provides a steam turbine exhaust waste heat recovery utilizes device, includes current garden heater, newly-increased garden surface formula heater, exhaust apparatus, heat supply network water inlet channel, heat supply network water return conduit, tee bend, manual stop valve and bypass electrically operated gate, newly-increased garden heater is fixed to be located in the exhaust apparatus, the inlet channel of current garden heater, newly-increased garden surface formula heater advance, the return conduit passes through the tee junction, newly-increased garden surface formula heater advance, be equipped with manual stop valve on the return conduit, newly-increased garden heater and the parallelly connected arrangement of current garden heater. The hot water demand of a heating park can be met through thermal calculation in summer, the temperature regulation allowance can be guaranteed, condensation air cooling island steam discharge is realized, park heat supply network water is heated, park heat supply network water temperature is improved, the purpose of unit air cooling backpressure is reduced, and the park heat supply network water after temperature rise is led to a company living area to serve as a living area hot water (bathing water) heat source.

Furthermore, the throat part of the steam exhaust device is fixedly provided with two temperature and pressure reducing devices, the top part of the steam exhaust device is fixedly provided with a partition plate, a steel net rack is fixedly arranged inside the steam exhaust device, the newly increased park heater is positioned between the two temperature and pressure reducing devices, and the newly increased park heater is supported and fixed on the steel net rack inside the steam exhaust device through the partition plate.

In order to ensure that the newly-increased park heater can be found in time after leaking, the newly-increased park heater is outward measured and is fixedly provided with a shell, the bottom of the shell positioned in the throat of the steam exhaust device is coiled by a complete steel plate, so that condensed water is convenient to collect, and the top and the side surface of the shell positioned in the throat of the steam exhaust device are coiled by a perforated steel plate so as to facilitate the entry of steam and directly contact with the steam exhaust of a steam turbine.

The newly-added surface heater is provided with an air exhaust pipeline, and because the non-condensable gas is generated from the dead steam introduced into the newly-added surface heater, the total non-condensable gas quantity of the system is not influenced, and new load is not generated on the original air exhaust equipment.

The fixed hydrophobic pipeline that is equipped with in newly-increased surface formula heater bottom, hydrophobic pipeline is equipped with that the U type is bent, the curved hydrophobic pipeline of U type links to each other with the exhaust apparatus bottom is fixed, and the newly-increased U type is bent, and its design height need be considered and can play the effect of water seal, can effectively avoid the condensate water reflux entering current garden heater of exhaust apparatus, avoids the vapour to hinder and leads to current garden heater efficiency to descend.

Preferably, the drain pipeline is provided with a remote-transmission conductivity meter, two ends of the remote-transmission conductivity meter are provided with two groups of isolation valves, the connection mode of the conductivity meter and the drain pipeline is a bypass mode, the remote-transmission conductivity meter detects the quality of condensed water, and the remote-transmission conductivity meter is connected to the drain pipeline arranged at a high position, so that the drain flow can be ensured.

In order to enable parts of the newly added surface type heater to meet the anti-corrosion requirement, the interior of front and rear water chambers of the newly added surface type heater is coated with epoxy coal pitch for corrosion prevention, and an aluminum anode anti-corrosion device is added.

7. And considering the quality of raw water, the heat exchange tube of the newly added park heater is made of TP316L material. Although the maximum flow velocity in the pipe is 1.36m/s, the area of the newly added park heater is large, the heat load of the unit area is small, the scaling tendency is not easy to generate, a special flushing system is not required to be arranged, and the operation condition is only required to be regularly checked during the operation.

The utility model adopts the above structure to gain beneficial effect as follows: the utility model provides a steam turbine exhaust waste heat recovery utilizes device, easy operation, compact structure, reasonable in design to life district water demand characteristics in summer, knows garden heat transfer station operating parameter and mode, unit steam turbine exhaust parameter, on-the-spot newly-increased equipment's installation space etc. replaces to assist vapour and heats life district heat supply network water with steam turbine exhaust, reduces high-quality steam extravagant, can satisfy heating company's life hot water demand, reaches energy-conserving purpose.

Drawings

Fig. 1 is the utility model provides a steam turbine exhaust waste heat recovery utilizes device's schematic structure diagram.

Wherein, 1, current garden heater, 2, newly-increased garden surface formula heater, 3, steam exhaust device, 4, heat supply network water inlet channel, 5, heat supply network water return water pipeline, 7, tee bend, 8, manual stop valve, 9, bypass electrically operated gate, 11, temperature and pressure reduction ware, 12, baffle, 13, steel rack, 14, casing, 15, bleed-off conduit, 16, hydrophobic pipeline, 17, U type is bent, 18, teletransmission conductance table, 19, isolating valve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a steam turbine exhaust waste heat recovery utilizes device, including current garden heater 1, newly-increased garden surface formula heater 2, exhaust apparatus 3, heat supply network water inlet pipe 4, heat supply network water return pipe 5, tee bend 7, manual stop valve 8 and bypass electrically operated gate 9, newly-increased garden heater 2 is fixed to be located in exhaust apparatus 3, the inlet channel of current garden heater 1, the inlet channel of newly-increased surface formula heater 2 are connected through tee bend 7, the return water pipeline of current garden heater 1, the return water pipeline of newly-increased surface formula heater 2 are connected through tee bend 7, be equipped with manual stop valve on the inlet, return water pipeline of newly-increased surface formula heater 2; two temperature and pressure reducing devices 11 are fixedly arranged at the throat part of the steam exhaust device 3, a partition plate 12 is fixedly arranged at the top part of the steam exhaust device 3, a steel net rack 13 is fixedly arranged inside the steam exhaust device 3, the newly added park heater 2 is positioned between the two temperature and pressure reducing devices 11, and the newly added park heater 2 is supported by the partition plate 12 and is fixed on the steel net rack 13 inside the steam exhaust device 3; a shell 14 is fixedly arranged on the outer side of the newly-added park heater 2, the bottom of the shell 14 positioned in the throat part of the steam exhaust device 3 is coiled by a complete steel plate, and the top and the side surface of the shell 14 positioned in the throat part of the steam exhaust device 3 are coiled by perforated steel plates; the newly-added surface type heater 2 is provided with an air exhaust pipeline 15; a drain pipeline 16 is fixedly arranged at the bottom of the newly-added surface heater 6, a U-shaped bend 17 is arranged at the bottom of the steam exhaust device 3, and the drain pipeline is fixedly connected with the U-shaped bend 17; the drain pipeline is provided with a remote-transmission conductivity meter 18, two ends of the remote-transmission conductivity meter 18 are provided with two groups of isolation valves 19, and the connection mode of the conductivity meter and the drain pipeline is a bypass mode; epoxy coal tar pitch is coated inside the front water chamber and the rear water chamber of the newly-added surface heater 6, and an aluminum anode anti-corrosion device is arranged inside the front water chamber and the rear water chamber.

The thermal calculation shows that the air-cooled exhaust steam in summer can meet the hot water demand of a heating park, meanwhile, the temperature regulation allowance can be ensured, the purposes of condensing the air-cooled island exhaust steam, heating the park heat supply network water, improving the temperature of the park heat supply network water and reducing the air-cooled back pressure of the unit are realized, and the park heat supply network water with the increased temperature is led to a company living area to serve as a hot water (bathing water) heat source of the living area; because the generation of the non-condensable gas is generated from the dead steam introduced into the newly-added surface heater 2, the total quantity of the non-condensable gas of the system is not influenced, and new load can not be generated on the original air extraction equipment; the U-shaped bend 17 is additionally arranged, the design height of the U-shaped bend needs to be considered to play a water sealing role, the condensate of the steam exhaust device 3 can be effectively prevented from flowing back to the existing park heater 1, and the efficiency of the existing park heater 1 is prevented from being reduced due to steam resistance; the remote conductivity meter 18 detects the quality of the condensed water, and the remote conductivity meter 18 is connected to the lower part of the drain pipeline 16 arranged at a high position, so that the drain flow can be ensured.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (6)

1. The utility model provides a steam turbine exhaust waste heat recovery utilizes device which characterized in that: including current garden heater, newly-increased garden surface formula heater, exhaust apparatus, heat supply network water inlet channel, heat supply network water return water pipeline, tee bend, manual stop valve and bypass electrically-operated gate, newly-increased garden heater is fixed to be located in the exhaust apparatus, the inlet channel of current garden heater, newly-increased garden surface formula heater advance, the return water pipeline passes through the tee junction, newly-increased garden surface formula heater advance, be equipped with manual stop valve on the return water pipeline, newly-increased garden heater and current garden heater parallel arrangement, exhaust apparatus's throat is fixed and is equipped with two temperature-reducing pressure reducers, the fixed baffle that is equipped with in exhaust apparatus top, the inside fixed steel rack that is equipped with of exhaust apparatus, newly-increased garden heater is located between two temperature-reducing pressure reducers, newly-increased garden heater passes through the baffle support and is fixed in on the inside steel rack of exhaust apparatus.

2. The exhaust steam waste heat recycling device of the steam turbine according to claim 1, characterized in that: the novel park heating device is characterized in that a shell is fixedly arranged on the outer side of the newly added park heater, the bottom of the shell located in the throat of the steam exhaust device is coiled by a complete steel plate, and the top and the side face of the shell located in the throat of the steam exhaust device are coiled by perforated steel plates.

3. The steam turbine exhaust waste heat recycling device according to claim 2, characterized in that: the newly-added park surface type heater is provided with an air exhaust pipeline.

4. The exhaust steam waste heat recovery device of the steam turbine according to claim 3, wherein: the fixed hydrophobic pipeline that is equipped with in newly-increased garden surface formula heater bottom, hydrophobic pipeline is equipped with the U type and bends, the curved hydrophobic pipeline of U type links to each other with exhaust apparatus bottom is fixed.

5. The exhaust steam waste heat recycling device of the steam turbine according to claim 4, characterized in that: the drainage pipeline is provided with a remote transmission conductivity meter, two ends of the remote transmission conductivity meter are provided with two groups of isolation valves, and the connection mode of the conductivity meter and the drainage pipeline is a bypass mode.

6. The exhaust steam waste heat recycling device of the steam turbine according to claim 5, characterized in that: epoxy coal tar pitch is coated inside the front water chamber and the rear water chamber of the newly-added park surface type heater, and an aluminum anode anti-corrosion device is arranged inside the front water chamber and the rear water chamber.

Images