CN202973973U

CN202973973U - Overall expansion type heater for heating network

Info

Publication number: CN202973973U
Application number: CN 201220679527
Authority: CN
Inventors: 姜享成; 姜宇; 李健; 郭建勋
Original assignee: JILIN TONGDA HEAT TRANSFER TECHNOLOGY Co Ltd
Current assignee: Siping Juyuan Heat Exchange System Integration Co ltd
Priority date: 2012-12-11
Filing date: 2012-12-11
Publication date: 2013-06-05
Anticipated expiration: 2022-12-11

Abstract

The utility model belongs to the field of heat exchange equipment, and particularly relates to an overall expansion type heater for heating network. The overall expansion type heater for heating network comprises a left tube box, a right tube box, an overall expansion shell body connected to both ends of the heater and a tube bundle disposed in the overall expansion shell body. The overall expansion type heater for heating network is characterized in that the tube bundle penetrates is divided into two zones through a layering partition plate, the upper zone is a condensing zone I, the lower zone is a cooling zone II, and the heat transfer area of the condensation zone I is larger than the heat transfer area of the cooling zone II. The overall expansion type heater for heating network is capable of improving heat transfer efficiency of the heater for heating network, reducing temperature of condensed water and enlarging water storage space. The heater is suitable for heating network of all types of power plants, and particularly for gas-water heat exchange of fixed tube-sheet exchanger.

Description

Whole heater for expansion heating network

Technical field

The utility model belongs to heat-exchange apparatus and makes the field, relates to specifically a kind of whole heater for expansion heating network, and heat supply network heating, particularly fixed tube-sheet exchanger that this heater is suitable for the use of all kinds of power plant are used for the steam-water heat exchanging operating mode.

Background technology

In recent years with coming, along with large-scale steam power plant constantly builds, be widely used in steam power plant and the urban district heating system Fixed Tube-sheet Type Heaters for Heat System is more.Most steam power plants are the infusion of financial resources of minimizing initial stage, installing space restriction and later stage operating cost, require high to the heat exchangers for district heating heat transfer efficiency, the steam condensation coolant-temperature gage is low, certain condensate water memory space etc. is arranged.But the hot device shortcoming of heat supply network was that shell-side is without reducing dilatation housing, without storage condensate water space in the past; Conduct heat without subregion in the shell-side tube bank, cross in the cold-zone and independently be not provided with deflection plate, the steam condensation coolant-temperature gage is reduced, heat transfer efficiency is too low.

Summary of the invention

In order to improve the heat exchangers for district heating heat transfer efficiency, make the abundant condensation of steam condensate and certain condensate water memory space to be arranged, the purpose of this utility model is to provide a kind of heat transfer efficiency that improves heat exchangers for district heating, reduce condensing water temperature and solve the whole heater for expansion heating network in certain water space.

The technical scheme that its technical problem that solves the utility model adopts is: this integral body heater for expansion heating network comprises left pipe box, right pipe box, two ends are connected with the whole dilatation housing of half node, be arranged on the tube bank in whole dilatation housing, it is characterized in that: described tube bank is divided into two zones by the layering dividing plate, upper zone is that condensing zone I, following zone were the cold-zone II, and the heat transfer area of described condensing zone I is greater than the heat transfer area of crossing the cold-zone II.

Be provided with the condensing zone support plate in the condensing zone I of described tube bank, cross and be provided with the cold-zone deflection plate in the II of cold-zone, spacing distance between described condensing zone support plate is large, the spacing distance of crossing between the deflection plate of cold-zone is little, and namely the spacing between the condensing zone support plate is greater than the spacing of crossing between the deflection plate of cold-zone.

The utlity model has following advantage and good effect:

1, the utility model conducts heat by layering dividing plate subregion owing to having adopted condensing zone and having crossed the cold-zone, in crossing the cold-zone, little spacing deflection plate is set, make condensate water reach turbulence state in crossing the cold-zone, the whole dilatations of two and half node have been adopted in the junction that has increased heat transfer efficiency, tube sheet and the housing of super cooled sect heat transfer, weakened the impact of steam to tube bank, solve simultaneously between heat exchanger tube and housing the stressed problem because of thermal expansion, and certain water storage space arranged, make to the utlity model has compact conformation the advantage such as heat transfer efficiency is high, accident rate is low.

2, the utility model is connected with housing junction employing two and half node at tube sheet, reach the whole dilatation purpose of housing, this structure has solved between heat exchanger tube and housing the different stressed different problems that cause because of thermal expansion on the one hand, improved on the other hand the flow regime of steam in housing, make steam inlet place's circulation area increase, steam flow rate enters in heat exchanger shell and diminishes, alleviate greatly the exchange heat pipe impact.Due to the whole dilatation of housing, can solve certain condensate water water storage space simultaneously.

3, tube bundle support of the present utility model adopts support plate, and housing is strengthened, and eliminates the risk factor of tube vibration and disconnected pipe, makes heat exchanger tube avoid damage.

4, the utility model tube bank is established dividing plate at condensing zone with crossing the cold-zone boundary, with condensing zone with cross the cold-zone and separate, and locate the single bow type deflection plate of use crossing the cold-zone; This structure can make condensate water reach turbulence state crossing the cold-zone, makes it fully excessively cold, improves heat transfer efficiency, and makes condensate water meet the requirements of temperature.

The advantages such as 5, the utility model also has compact conformation, and heat transfer efficiency is high, accident rate is low.

Description of drawings

Fig. 1 is whole heater for expansion heating network overall structure schematic diagram.

Fig. 2 is A-A profile in the utility model Fig. 1.

The specific embodiment

Shown in accompanying drawing 1: this integral body heater for expansion heating network comprises left pipe box 1, right pipe box 6, two ends are connected with the whole dilatation housing 5 of half node 2, be arranged on the tube bank 3 in whole dilatation housing 5, described tube bank 3 is divided into two zones by layering dividing plate 8, upper zone is that condensing zone I, following zone were the cold-zone II, and the heat transfer area of described condensing zone I is greater than the heat transfer area of crossing the cold-zone II.

Be provided with condensing zone support plate 4 in the condensing zone I of described tube bank 3, cross and be provided with cold-zone deflection plate 7 in the II of cold-zone, spacing distance between described condensing zone support plate 4 is large, the spacing distance of crossing between cold-zone deflection plate 7 is little, and namely the spacing between condensing zone support plate 4 is greater than the spacing of crossing between cold-zone deflection plate 7.

Described condensing zone support plate 4 and cross the cold-zone deflection plate and all adopt the distance sink tube location.

Operation principle: healed water is flowed through by left pipe box 1 top medium import 9 and is restrained 3, flows out from right pipe box 6 below media outlets 10; Heating steam enters heat exchanger shell condensing zone I from whole dilatation housing 5 top medium imports 11, make the steam generation phase transformation, become condensate water, condensate water flows through heat exchanger shell by layering dividing plate 8 crosses the cold-zone II, cross cold-zone deflection plate 7 do with under, make to condense in the cold-zone II and reach turbulence state, improved the heat transfer efficiency of cold-zone, after condensing water temperature is reduced, flow out from whole dilatation housing 5 below media outlets 12.

Claims

1. whole heater for expansion heating network, this integral body heater for expansion heating network comprises left pipe box, right pipe box, two ends are connected with the whole dilatation housing of half node, be arranged on the tube bank in whole dilatation housing, it is characterized in that: described tube bank is divided into two zones by the layering dividing plate, upper zone is that condensing zone I, following zone were the cold-zone II, and the heat transfer area of described condensing zone I is greater than the heat transfer area of crossing the cold-zone II.

2. a kind of whole heater for expansion heating network according to claim 1, it is characterized in that: be provided with the condensing zone support plate in the condensing zone I of described tube bank, cross and be provided with the cold-zone deflection plate in the II of cold-zone, spacing distance between described condensing zone support plate is large, the spacing distance of crossing between the deflection plate of cold-zone is little, and namely the spacing between the condensing zone support plate is greater than the spacing of crossing between the deflection plate of cold-zone.