Condenser for steam turbine

Abstract

The utility model relates to the technical field of condensers, in particular to a condenser for a steam turbine. Comprising a demineralized water circulating pipe (arranged on the upper portion of a condenser copper pipe) fixed to the end of a condenser main body, and the demineralized water circulating pipe sequentially penetrates through a boiler main body, a water tank and a water pump in a penetrating mode. Steam exhaust heat loss of the steam turbine main body is recovered; the demineralized water with higher temperature enters the heat exchangers at the outlet of the blower and the outlet of the primary fan of the boiler main body, and the demineralized water after heat exchange and cooling enters the circulating water tank and enters the condenser main body again for heat absorption, so that circulating absorption and heat release are realized, and the blower and the primary fan send the absorbed heat into the hearth of the boiler main body for utilization; the energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to condenser technical field, concretely is a condenser for steam turbine. BACKGROUND

[0002] Condenser is a kind of heat exchanger that steam turbine low-pressure cylinder exhaust condenses into water, mainly used in steam turbine power device.

[0003] In prior art, steam turbine is a kind of rotary steam power device, it is mainly steam heat energy conversion into mechanical energy, and then drive mechanical equipment or generator power generation, power station extraction condensing type steam turbine is designed with condenser, steam turbine exhaust enters condenser, is cooled and condensed into water by circulating water, and the vacuum of steam turbine is established by the way of condensing steam turbine exhaust, and condenser circulating water will absorb the heat to the atmosphere.

[0004] However, the condenser circulating water of prior art will absorb the heat to the atmosphere, causes a large amount of heat loss, and steam turbine exhaust heat loss is the largest in steam turbine losses, and due to the increase of ambient temperature, the operating current of circulating water pump is increased, and the vacuum of condenser is reduced, indirectly leading to the increase of boiler coal consumption. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a condenser for steam turbine to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a condenser for steam turbine, the condenser for steam turbine includes:

[0007] Condenser main part, the condenser main part end is fixed with desalted water circulating water pipe, and the desalted water circulating water pipe is successively inserted through boiler main part, water tank and water pump.

[0008] Preferably, the condenser main part is located in the steam turbine main part, the outer surface of the condenser main part is fixed with inlet pipe and exhaust pipe, and the steam turbine main part exhaust port corresponds with inlet pipe.

[0009] Preferably, the condenser main part is located in the steam turbine main part, the outer surface of the condenser main part is fixed with inlet pipe and exhaust pipe, and the steam turbine main part exhaust port corresponds with inlet pipe.

[0010] Preferably, the condenser main part is located in the steam turbine main part, the outer surface of the condenser main part is fixed with inlet pipe and exhaust pipe, and the steam turbine main part exhaust port corresponds with inlet pipe.

[0011] Preferably, the desalted water circulating pipe is fixed with a boiler body at the outer surface of the steam inlet pipe, the desalted water circulating pipe is fixed between the water tank and the water pump, the desalted water circulating pipe is fixed between the water pump and the condenser body.

[0012] Preferably, a plurality of through holes are arranged on the surface of the fixing plate, the plurality of through holes correspond to the cooling water pipes, the desalted water circulating pipe and the cooling water pipes are connected through the connecting cabin, and the water tank is internally provided with desalted water.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] During normal operation of the steam turbine body, the steam turbine body exhaust enters the condenser body to perform condensation heat exchange, and when the steam turbine body exhaust heat loss occurs, the circulating water pump of the circulating water tank pumps the desalted water to the desalted water heating surface in the condenser body to perform heat exchange, so as to recover the steam turbine body exhaust heat loss; the desalted water with high temperature is then sent to the heat exchanger at the outlet of the boiler body air supply fan and the outlet of the primary air fan, the desalted water after heat exchange and cooling is sent to the circulating water tank and then enters the condenser body to perform heat absorption, so as to realize cyclic heat absorption and release; the air supply fan and the primary air fan send the absorbed heat to the boiler body hearth for utilization, thereby reducing energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure perspective view of the utility model;

[0016] Fig. 2 It is a sectional view of the condenser body structure of the utility model;

[0017] Fig. 3 It is a cooling water pipe structure perspective view of the utility model.

[0018] In the drawing: 1, steam turbine body; 2, condenser body; 3, desalted water circulating pipe; 4, boiler body; 5, water tank; 6, water pump; 7, steam inlet pipe; 8, connecting cabin; 9, fixing plate; 10, cooling cavity; 11, exhaust pipe; 12, cooling water pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme of the utility model clear, complete and the advantages more clear and clear, the following will be further described in detail by combining with the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the utility model, not all embodiments, and are only used to explain the embodiments of the utility model, and do not limit the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0020] For the purposes of simplicity and illustration, the principles of the embodiments are primarily described by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. It will be apparent, however, to one ordinarily skilled in the art that the embodiments can be practiced without the specific details and that numerous implementation choices may be made. In some instances, well-known methods and structures have not been described in detail in order to avoid unnecessarily obscuring the embodiments. Also, all embodiments can be used in combination with each other.

[0021] Referring to Figs. 1 to 3 The utility model provides a technical scheme: a condenser for steam turbine.

[0022] Embodiment one, the condenser main part 2 end is fixed with the desalted water circulation water pipe 3, and the desalted water circulation water pipe 3 is inserted through the boiler main body 4, water tank 5 and water pump 6 in turn, and the desalted water is pumped to the heated surface inside the condenser main part 2 by the circulating water pump 6 of circulating water tank 5 to carry out heat exchange, and the steam turbine main body 1 exhaust heat loss is recycled, and the desalted water with higher temperature is sent to the heat exchanger at the outlet of the boiler main body 4 and the outlet of the primary air fan, and exchanges heat with the cold air, and the desalted water after heat exchange and cooling enters the circulating water tank 5 and is heated again in the condenser main part 2, to realize the cyclic absorption and heat release of the steam turbine main body 1 exhaust heat loss heat.

[0023] On the basis of embodiment one, in order to realize the reduction of the steam turbine main body 1 exhaust heat loss, the condenser main part 2 is located inside the steam turbine main body 1, the condenser main part 2 outer surface is fixed with the inlet pipe 7 and the exhaust pipe 11, and the steam turbine main body 1 outlet and the inlet pipe 7 correspond.

[0024] The condenser main part 2 is internally provided with a cooling cavity 10, and the condenser main part 2 is internally fixed with a fixed plate 9, and a connecting cabin 8 is arranged between the fixed plate 9 and the end of the condenser main part 2.

[0025] The inlet pipe 7 and the exhaust pipe 11 communicate with the cooling cavity 10, the fixed plate 9 is provided with two groups, and the cooling water pipe 12 is fixed between the two groups of fixed plates 9, and the cooling water pipe 12 is located in the cooling cavity 10.

[0026] The desalted water circulation water pipe 3 is fixed with the boiler main body 4 at the outer surface close to the inlet pipe 7, the desalted water circulation water pipe 3 is fixed between the boiler main body 4 and the water tank 5, the desalted water circulation water pipe 3 is fixed between the water tank 5 and the water pump 6, and the desalted water circulation water pipe 3 is fixed between the water pump 6 and the condenser main part 2.

[0027] A plurality of through holes are arranged on the surface of the fixed plate 9, the plurality of through holes correspond to the cooling water pipe 12, the desalted water circulation water pipe 3 and the cooling water pipe 12 are connected through the connecting cabin 8, and the water tank 5 is internally provided with desalted water.

[0028] In actual use, during normal operation of the steam turbine main body 1, the exhaust steam of the steam turbine main body 1 enters the inside of the condenser main body 2 to perform heat exchange, causing exhaust heat loss of the steam turbine main body 1, and a circulating water tank 5 is arranged outside the condenser main body 2, high-quality desalted water is used for water replenishment, the circulating water pump 6 of the circulating water tank 5 is used to pump the desalted water to the inside of the condenser main body 2 to perform heat exchange, the exhaust heat loss of the steam turbine main body 1 is recovered, the desalted water with high temperature is sent to the heat exchanger at the outlet of the boiler main body 4 and the outlet of the primary air fan to perform heat exchange with cold air, the desalted water after heat exchange and cooling is sent to the circulating water tank 5 and then enters the condenser main body 2 to absorb heat, so that the exhaust heat loss of the steam turbine main body 1 is cyclically absorbed and released; meanwhile, the air supply fan and the primary air fan send the absorbed heat into the inside of the furnace of the boiler main body 4 to be utilized, the increase of the air temperature of the air supply fan and the primary air fan also increases the comprehensive temperature at the inlet of the air preheater, especially in winter, the air preheater pressure difference can be reduced, the air preheater ash deposition can be reduced, so that the current of the induced draft fan and the air supply fan is reduced, and the energy consumption is reduced.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A condenser for a steam turbine, characterised in that: The condenser for the steam turbine comprises: The condenser main body (2) is fixed with the desalted water circulating pipe (3) at the end, the desalted water circulating pipe (3) is inserted through the boiler main body (4), the water tank (5) and the water pump (6) in sequence, the condenser main body (2) is located inside the steam turbine main body (1), the outer surface of the condenser main body (2) is fixed with the steam inlet pipe (7) and the steam exhaust pipe (11), the steam outlet of the steam turbine main body (1) corresponds to the steam inlet pipe (7), the cooling cavity (10) is arranged inside the condenser main body (2), the fixing plate (9) is fixed inside the condenser main body (2), the connecting cabin (8) is arranged between the fixing plate (9) and the end of the condenser main body (2), the steam inlet pipe (7), the steam exhaust pipe (11) and the cooling cavity (10) are communicated, the fixing plate (9) is provided in two groups, the cooling water pipe (12) is fixed between the two groups of fixing plates (9), and the cooling water pipe (12) is located in the cooling cavity (10).

2. A condenser for a steam turbine as claimed in claim 1, characterised in that: The outer surface of the desalted water circulating pipe (3) near the steam inlet pipe (7) is fixed with the boiler main body (4), the desalted water circulating pipe (3) is fixed between the boiler main body (4) and the water tank (5), the desalted water circulating pipe (3) is fixed between the water tank (5) and the water pump (6), and the desalted water circulating pipe (3) is fixed between the water pump (6) and the condenser main body (2).

3. A condenser for a steam turbine as claimed in claim 1, characterised in that: A plurality of through holes are arranged on the surface of the fixing plate (9), the plurality of through holes correspond to the cooling water pipe (12), the desalted water circulating pipe (3) and the cooling water pipe (12) are communicated through the connecting cabin (8), and the water tank (5) is provided with desalted water.

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