Energy-saving heating network heater

Abstract

The invention discloses an energy-saving heating network heater which belongs to heat exchangers. The structure of the energy-saving heating network heater comprises a housing, a front end channel, a back end channel and a pipe bundle. The upper portion and the lower portion of the housing are respectively provided with a steam cushioning jacket and a lyophobic storage jacket. A steam inlet pipe is arranged at the upper portion of the steam cushioning jacket; and a lyophobic outlet pipe is arranged at the lower portion of the lyophobic storage jacket. A scour-prevention plate is arranged at the lower portion of the steam inlet pipe. A split-ranging partitioning plate is arranged in the middle of the front end channel. The pipe bundle comprises a pipe plate, a support plate, a pull rod and heat-exchanging pipes. A plurality of heat-exchanging pipes is entirely distributed all over the pipe plate. An expansion joint is arranged between the housing and the back end channel. A steam stop plate is arranged inside the expansion joint. By entirely distributing the heat-exchanging pipes all over the pipe plate, the steam is prevented from directly contacting with the condensed water, and accordingly the heat-exchanging area is increased, the temperature of the condensed water is low, thereby saving the energy source. The energy-saving heating network heater is characterized in reducing the flow speed at the steam inlet, avoiding the damage to the equipment, reducing the operation noise, and being good in heat transfer effect, or the like.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to an energy-saving heating network heater. Background technique [0002] At present, most of the central heating stations in urban heating networks are steam-water shell-and-tube heating network heaters. Traditional heating network heaters use half-wave expansion joints. When using them, the entire expansion joint needs to be cut off from the middle to use them. To reduce the flow rate of steam entering the tube bundle, it is necessary to enlarge the cylinder in the middle. After the steam enters the large cylinder, it surrounds the heat exchange tube bundle for heat exchange. In order to enable the steam to enter the tube bundle effectively and avoid insufficient heat exchange at the center of the tube bundle, it is necessary to install steam on the tube plate. aisle. [0003] There are following disadvantages in existing scheme: [0004] 1. Since the steam channel is set on the tube plate, t...

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Problems solved by technology

[0005] 2. Since the cylinder is enlarged in the middle, it is necessary to add a support ring to support the support plate, which increases the material cost;

[0006] 3. The steam inlet flow rate is high, which has a large impact on the heat exchange tube, often causing damage to the welded joint between the heat exchange tube and the tube sheet, and the support between the heat exchange tube and the support plate;

[0007] 4. The steam inlet flow rate is high, resulting in high operating noise;

[0008] 5. Since the steam surrounds the tube bundle as a whole, the steam is in direct contact with the lower condensed water, which is equivalent to the mixed heating of steam and water, which increases the temperature of the condensed water and causes energy waste. To ensure the outlet temperature of the condensed water, it is necessary to increase the heat exchange area. cause waste of materials;

[0009] 6. The heat transfer effect is poor and the floor space is large

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