CN211346396U - Efficient evaporative peak cooling device - Google Patents

Abstract

The utility model discloses an efficient evaporative peak cooling device, which comprises a steam turbine, a steam exhaust device, a steam exhaust pipeline, an evaporative condenser, a vacuum pumping differential pressure balancing device and a vacuum pumping pipeline, wherein the direct air-cooled condenser is connected with the steam exhaust pipeline, the evaporative condenser is connected with the steam exhaust pipeline, the system adjusts the condensation steam quantity of the evaporative condenser through a frequency conversion fan of the direct air-cooled condenser and the vacuum pumping differential pressure balancing device, the evaporative condenser comprises a water tank, a box body is arranged above the water tank, a shutter is arranged on one side of the box body, a secondary evaporation device is arranged above the shutter, the efficient evaporative peak cooling device greatly improves the steam quantity through a double-head steam inlet mode, simultaneously, the heat exchange tube bundle is heated more uniformly, the heat exchange efficiency is further improved, and a variable-pitch mode spray device is adopted, the cooling water is uniformly sprayed on the outer side surface of the heat exchange tube bundle, and the heat exchange efficiency is further improved.

Description

Efficient evaporative peak cooling device

Technical Field

The utility model relates to a heat transfer technical field specifically is an efficient evaporation formula peak cooling device.

Background

In most coal-rich and water-deficient areas of China, air-cooled power stations are adopted, the direct air-cooled condenser takes ambient air as a medium, the performance of a unit is greatly influenced by the ambient temperature, the running back pressure of the unit in summer is high, the power generation coal consumption is high, the heat efficiency is low, the safety and the economical efficiency are poor, and from the 20 th century and the 70 th century, the evaporative condenser is used instead of the water-cooled condenser in internationally developed countries. Compared with the traditional water-cooling and air-cooling heat exchange equipment mainly based on sensible heat exchange, the evaporative condenser (the core of the peak cooling device) greatly improves the heat exchange efficiency, reduces the energy consumption and the water consumption, and further improves the economic benefit and the social benefit of enterprises.

In the working process, the existing evaporative condenser adopts single-side steam inlet in the working process, high-temperature steam enters the heat exchange tube bundle, the phenomenon of uneven heating of materials in the heat exchange tube bundle in the using process is caused, the subsequent evaporation vaporization is influenced, the utilization efficiency of resources of the heat exchange mode is low, the high-efficiency reasonable utilization of the resources cannot be realized, and the use requirement cannot be met under some conditions.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome current defect, provide an efficient evaporation formula peak cooling device, adopt the mode of a double-end admission, improve the admission volume of evaporative condenser, make heat exchanger tube bank be heated more evenly simultaneously, further promoted heat exchange efficiency, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-efficiency evaporative peak cooling device comprises a steam turbine, a steam exhaust device, a steam exhaust pipeline, a direct air-cooled condenser, an evaporative condenser, a vacuum pumping differential pressure balancing device and a vacuum pumping pipeline, wherein the evaporative condenser is connected with the steam exhaust pipeline, the vacuum pumping differential pressure balancing device and a variable frequency fan of the direct air-cooled condenser adjust the condensation steam quantity of the evaporative condenser, the evaporative condenser comprises a water tank, a box body is arranged above the water tank, a louver is arranged on one side of the box body, a secondary evaporation device is arranged above the louver, heat exchange tube bundles are arranged above the secondary evaporation device, the number of the heat exchange tube bundles is two, the two heat exchange tube bundles are both connected with a condensation water tank, the condensation water tank is positioned in the middle, a water outlet pipe is arranged on the lower surface of the condensation water tank, and a steam inlet pipe box is, a spraying device is arranged above the heat exchange tube bundle, an air exchange device is arranged above the box body, and the spraying device is connected with the water tank.

As an optimal technical scheme of the utility model, breather includes draft tube and ring channel steel, and the draft tube passes through the annular channel-section steel and is connected through the bolt with the box.

As an optimized technical scheme of the utility model, spray set's upper end is provided with receives the hydrophone.

As the utility model discloses an optimized technical scheme, spray set includes water pump, shower and shower head, and the water pump is connected with water tank and shower through the pipeline, and the lateral surface of shower becomes the interval and is provided with the shower head.

Compared with the prior art, the beneficial effects of the utility model are that: this efficient evaporation formula peak cooling device makes the admission volume improve greatly through the mode of double-end admission, makes heat exchanger tube bank be heated more evenly simultaneously, has further promoted heat exchange efficiency, adopts the mode spray set of becoming the interval simultaneously, makes the cooling water evenly spray at heat exchanger tube bank's lateral surface, further improves the efficiency of heat transfer.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic diagram of an evaporative condenser structure.

In the figure: the system comprises a steam turbine 1, a steam exhaust device 2, a steam exhaust pipeline 3, a direct air-cooled condenser 4, an evaporative condenser 5, a vacuum pumping differential pressure balancing device 6, a vacuum pumping pipeline 7, a water tank 8, a louver 9, a secondary evaporation device 10, a heat exchange tube bundle 11, a condensed water tank 12, a water outlet pipe 13, a steam inlet pipe box 14, a spray device 15, an air interchanger 16, a ventilating duct 17, an annular channel steel 18, a water receiver 19, a water pump 20, a spray pipe 21, a spray head 22 and a box body 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a high-efficiency evaporative peak cooling device comprises a steam turbine 1, a steam exhaust device 2, a steam exhaust pipeline 3, a direct air-cooled condenser 4, an evaporative condenser 5, a vacuum pumping differential pressure balancing device 6 and a vacuum pumping pipeline 7, wherein the direct air-cooled condenser 4 and the evaporative condenser 5 are respectively connected with the steam exhaust pipeline 3, the vacuum pumping differential pressure balancing device 6 and a direct air-cooled condenser variable frequency fan adjust the condensation steam quantity of the evaporative condenser 5, the evaporative condenser 5 comprises a water tank 8, a box body 23 is arranged above the water tank 8, a louver 9 is arranged on one side of the box body 23, a secondary evaporation device 10 is arranged above the louver 9, heat exchange tube bundles 11 are arranged above the secondary evaporation device 10, the number of the heat exchange tube bundles 11 is two, the two heat exchange tube bundles 11 are symmetrically arranged and are both connected with a condensation water tank 12, the steam inlet amount is improved, the heat exchange efficiency is improved, the condensate tank 12 is located in the middle, the lower surface of the condensate tank 12 is provided with a water outlet pipe 13, the other end of the heat exchange tube bundle 11 is provided with a steam inlet pipe box 14, a spraying device 15 is arranged above the heat exchange tube bundle 11, the spraying device 15 comprises a water pump 20, a spraying pipe 21 and a spraying head 22, the water pump 20 is connected with the water tank 8 and the spraying pipe 21 through a pipeline, the spraying head 22 is arranged on the outer side surface of the spraying pipe 21 at intervals, cooling water is uniformly sprayed on the outer side surface of the heat exchange tube bundle, the heat exchange efficiency is further improved, a water collector 19 is arranged at the upper end of the spraying device 15 and can carry out water treatment, a ventilation device 16 is arranged above the box body 23, the ventilation device 16 comprises a ventilation barrel 17 and an annular channel steel 18, the ventilation barrel 17 is connected with the box body, spray set 15 is connected with water tank 8, and this utility model is rational in infrastructure, can effectively improve heat exchange efficiency, the simplified system, and operation maintenance is convenient.

When in use: steam discharged by a steam turbine 1 enters a steam discharge pipeline 3 through a steam discharge device 2, the steam discharge pipeline 3 is respectively connected with two steam inlet pipe boxes 14 of an evaporative condenser 5, a spraying device 15 sprays to perform heat exchange, cooling water absorbing heat is changed into water vapor and discharged from a ventilating duct 17, meanwhile, the water vapor is cooled to be changed into condensed water and enters a condensed water tank 12, non-condensable gas is discharged into the atmosphere through a vacuumizing pipeline 7 through a vacuumizing differential pressure balancing device 6, the cooling water which is not evaporated flows into a secondary evaporator 10 to perform secondary evaporation, and meanwhile, the cooling water which is not evaporated still flows into a water inlet tank 8 to be recycled.

The utility model discloses the configuration is reasonable, adopts the mode of double-end admission, makes the admission improve greatly, makes being heated of heat exchanger tube bank more even simultaneously, has further promoted heat exchange efficiency, spray set 15 when spraying the heat transfer, the cooling water that is not evaporated then flows into secondary evaporator 10, carries out the secondary evaporation, further improves the efficiency of heat transfer, the cooling water inflow case 8 that still is not evaporated simultaneously carries out cyclic utilization, the water economy resource reduces the operation cost simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an efficient evaporation formula peak cooling device, includes by steam turbine (1), exhaust apparatus (2), exhaust pipeline (3), direct air cooling condenser (4), evaporative condenser (5), evacuation pressure differential balancing unit (6), evacuation pipeline (7) are constituteed, evaporative condenser (5) are connected with exhaust pipeline (3), the condensation steam volume of evacuation pressure differential balancing unit (6) and direct air cooling condenser variable frequency fan regulation evaporative condenser (5), its characterized in that: the evaporative condenser (5) comprises a water tank (8), a box body (23) is arranged above the water tank (8), a louver (9) is arranged on one side of the box body (23), a secondary evaporation device (10) is arranged above the louver (9), heat exchange tube bundles (11) are arranged above the secondary evaporation device (10), the number of the heat exchange tube bundles (11) is two, the two heat exchange tube bundles (11) are connected with a condensation water tank (12), the condensation water tank (12) is located in the middle, a water outlet pipe (13) is arranged on the lower surface of the condensation water tank (12), a steam inlet pipe box (14) is arranged at the other end of the heat exchange tube bundles (11), a spraying device (15) is arranged above the heat exchange tube bundles (11), an air exchange device (16) is arranged above the box body (23), and the spraying device (15) is connected with the.

2. A high efficiency evaporative spike cooling device as defined in claim 1 wherein: the ventilation device (16) comprises a ventilation tube (17) and annular groove steel (18), and the ventilation tube (17) is connected with the box body (23) through bolts through the annular groove steel (18).

3. A high efficiency evaporative spike cooling device as defined in claim 1 wherein: a water collector (19) is arranged at the upper end of the spraying device (15).

4. A high efficiency evaporative spike cooling device as defined in claim 1 wherein: the spraying device (15) comprises a water pump (20), a spraying pipe (21) and a spraying head (22), the water pump (20) is connected with the water tank (8) and the spraying pipe (21) through a pipeline, and the spraying head (22) is arranged on the outer side surface of the spraying pipe (21) at intervals.

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