CN211552504U

CN211552504U - Steam heat exchanger and steam heat exchange system

Info

Publication number: CN211552504U
Application number: CN201921633584.0U
Authority: CN
Inventors: 何文亮
Original assignee: SUZHOU SINGSUNG ENG CO Ltd
Current assignee: SUZHOU SINGSUNG ENG CO Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-09-22
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a steam heat exchanger and steam heat transfer system, this steam heat exchanger include heat exchange coil, heat exchange coil includes heat exchange tube, steam collector and congeals the water collector, the steam collector reaches congeal the water collector and all follow the horizontal direction setting. The utility model provides a steam heat exchanger, its intake pipe links to each other with the steam header is perpendicular, makes steam or the steam that thoughtlessly has the comdenstion water only get into through an elbow promptly the steam header, and because the steam header with the junction of intake pipe closes on the one end of steam header, the comdenstion water in the intake pipe is in can be quick reposition of redundant personnel in steam header to the steam header and the heat-exchange tube of the both sides of this tie point, avoid the comdenstion water in the steam header with the junction stagnation of intake pipe, and then avoid at the steam header with the water hammer phenomenon takes place in the junction of intake pipe, extension steam heat exchanger's life.

Description

Steam heat exchanger and steam heat exchange system

Technical Field

The utility model relates to a indirect heating equipment field, specific is a steam heat exchanger and steam heat transfer system.

Background

The water hammer is also called water hammer, the water hammer phenomenon is particularly serious in a steam system, and if the water hammer phenomenon is not properly treated, the production is influenced, and even the human body is injured. In a steam heat exchange system, the water hammer phenomenon generally occurs because the condensed water violently impacts elbows, valves, heat exchange equipment and the like. Taking the conventional condensing heat exchanger structure shown in fig. 1 and 2 as an example, the air inlet pipe 4 is connected with the steam header 2 of the condensing heat exchanger through two continuous bends, when the condensed water in the air inlet pipe 4 reaches the continuous U-shaped bend, the condensed water is suddenly turned from high speed to rest, all kinetic energy is released to the wall of the bend at the bend in a pressure mode, and if the water hammer speed is high or the mass of the condensed water is large, the wall of the air inlet pipe 2 or the bend is broken. Even if the water hammer is slow or has a small mass, it generates a large noise and vibration.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect in the prior art, the embodiment of the utility model provides a steam heat exchanger and steam heat transfer system, it is used for solving among the prior art problem that easily takes place the water hammer phenomenon in the steam heat exchanger.

The embodiment of the application discloses: the utility model provides a steam heat exchanger, its includes heat exchange coil, heat exchange coil includes a plurality of heat exchange tubes of arranging along vertical direction, is located the heat exchange tube top and with all the steam collector of heat exchange tube intercommunication, and be located the heat exchange tube below and with all the water collector that condenses of heat exchange tube intercommunication, the air inlet collector reaches the water collector that condenses all sets up along the horizontal direction, steam heat exchanger still include with the steam collector links to each other in order to the steam collector provides the intake pipe of steam, the air inlet pipe sets up along vertical direction, just the steam collector with the junction of intake pipe closes on the one end of steam collector.

Further, the air inlet pipe is arranged along the vertical direction.

Furthermore, the condensate header comprises a main pipe section and an eccentric section, the eccentric section is positioned at a part corresponding to the connection part of the condensate header, the steam header and the air inlet pipe in the vertical direction, the pipe diameter of the eccentric section is larger than that of the main pipe section, and the eccentric section is flush with the bottom of the inner wall of the main pipe section.

Furthermore, the joint of the water outlet end of the condensed water collecting pipe and the steam collecting pipe and the air inlet pipe is arranged diagonally.

Further, a drain valve is arranged at the downstream of the condensed water collecting pipe.

Further, a check valve is arranged at the downstream of the condensed water header.

Furthermore, a first cut-off valve, a drain valve, a check valve and a second cut-off valve which are connected in sequence are arranged at the downstream of the condensed water collecting pipe.

The embodiment of the application also discloses: a steam heat exchange system comprising a plurality of steam heat exchangers as described above and a condensate recovery device in communication with the condensate headers of all of the steam heat exchangers.

The utility model has the advantages as follows:

the utility model provides a steam heat exchanger, its intake pipe links to each other with the steam header is perpendicular, makes steam or the steam that thoughtlessly has the comdenstion water only get into promptly through an elbow the steam header, and because the steam header with the junction of intake pipe closes on the one end of steam header, this junction is close to the one end of steam header promptly, nevertheless has the clearance with this tip, and the comdenstion water in the intake pipe is flowing in can be in the steam header can be with quick steam header and the heat exchange tube internal shunting to the both sides of this tie point, avoid the comdenstion water in the steam header with the junction stasis of intake pipe, and then avoid steam header with the water hammer phenomenon takes place in the junction of intake pipe, extension steam heat exchanger's life.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art steam heat exchanger;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of a steam heat exchanger according to an embodiment of the present invention;

FIG. 4 is a top view of FIG. 3;

fig. 5 is a schematic view of the mechanism at the eccentric section of the condensate header in an embodiment of the present invention;

reference numerals of the above figures:

1. a heat exchange pipe; 2. a steam header; 3. a condensate header; 31. a main pipe section; 32. an eccentric section; 4. an air inlet pipe;

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.

Please refer to fig. 3 and 4, which illustrate a steam heat exchanger, comprising a heat exchange coil, the heat exchange coil comprises a plurality of heat exchange tubes 1 arranged along a vertical direction, a steam header 2 located above the heat exchange tubes 1 and communicated with all the heat exchange tubes 1, and a water condensation header 3 located below the heat exchange tubes 1 and communicated with all the heat exchange tubes 1, the air inlet header and the water condensation header 3 are both arranged along a horizontal direction, the steam heat exchanger further comprises an air inlet tube 4 connected with the steam header 2 to provide steam for the steam header 2, the air inlet tube 4 is arranged along the vertical direction, and a connection position of the steam header 2 and the air inlet tube 4 is close to one end of the steam header 2.

By means of the structure, the air inlet pipe 4 is vertically connected with the steam header 2, so that steam or steam mixed with condensed water enters the steam header 2 only through one elbow, and because the joint of the steam header 2 and the air inlet pipe 4 is close to one end of the steam header 2, namely the joint is close to one end of the steam header 2 and has a gap with the end, the condensed water in the air inlet pipe 4 can rapidly flow into the steam header 2 and can be divided into the steam header 2 and the heat exchange pipe 1 on two sides of the joint, the stagnation of the condensed water at the joint of the steam header 2 and the air inlet pipe 4 is avoided, the water hammer phenomenon at the joint of the steam header 2 and the air inlet pipe 4 is further avoided, and the service life of the steam heat exchanger is prolonged. Preferably, the air inlet pipe 4 can be arranged along the vertical direction, so that the condensed water in the air inlet pipe 4 can directly and quickly flow into the heat exchange pipe 1 under the action of gravity, and the phenomenon of water hammer at the joint of the steam header 2 and the air inlet pipe 4 is avoided.

Specifically, the heat exchange tubes 1 may be copper tubes with fins, all the heat exchange tubes 1 are arranged at intervals and are substantially uniformly distributed along the length direction of the steam header 2 so as to be substantially communicated with each part of the inner cavity of the steam header 2, and it can be understood that at least one or more of the heat exchange tubes 1 can be communicated with the connection part of the steam header 2 and the air inlet pipe 4. Downstream of the condensate header 3 there may be provided a trap and/or a check valve or the like, for example in a preferred embodiment there is provided a first shut-off valve, a trap, a check valve and a second shut-off valve connected in series downstream of the condensate header 3 in order to separate steam and condensate and to prevent condensate from flowing back to the condensate header 3. In order to improve the heat exchange effect of the steam heat exchanger, the water outlet end of the condensate header 3 and the connection part of the steam header 2 and the air inlet pipe 4 can be arranged diagonally to prolong the flow path of the steam in the steam heat exchanger.

Referring to fig. 5, in a preferred embodiment, the condensate header 3 includes a main pipe section 31 and an eccentric section 32, the eccentric section 32 is located at a portion of the condensate header 3 corresponding to a connection point of the steam header 2 and the air inlet pipe 4 in a vertical direction, a pipe diameter of the eccentric section is larger than that of the main pipe section 31, and the eccentric section 32 is flush with a bottom portion of an inner wall of the main pipe section 31. As described above, the condensed water in the air inlet pipe 4 flows into the steam header 2 and is divided into the heat exchange pipes 1 communicated with the connection part of the steam header 2 and the air inlet pipe 4, it can be understood that these heat exchange pipes 1 collect the condensed water more toward the condensed water header 3 below the heat exchange pipes than other heat exchange pipes 1, once the condensed water collected toward the inside of the condensed water header 3 through these heat exchange pipes 1 collides with the already existing condensed water header 3 in the condensed water header 3 and blocks the condensed water header 3, resistance is formed to the flow of the steam at the upstream, the pressure in the condensed water header 3 rises, and when the steam passes through the gap between the condensed water and the pipeline again, the pressure in the pipe suddenly decreases, and the change of the flow speed and pressure of the steam forms a certain impact on the pipeline, and the water hammer phenomenon is generated. And the eccentric section 32 is arranged at the part corresponding to the connecting part of the condensate header 3, the steam header 2 and the air inlet pipe 4 in the vertical direction, so that when the condensate water in the heat exchange pipe 1 communicated with the connecting part of the steam header 2 and the air inlet pipe 4 is converged into the eccentric section 32 of the condensate header 3, enough accommodating space is provided, the steam circulation is prevented from being blocked, and the water hammer phenomenon is further prevented from occurring at the position.

The embodiment of the application also discloses: a steam heat exchange system comprising a plurality of steam heat exchangers as described above and a condensate recovery means in communication with the condensate headers 3 of all of the steam heat exchangers.

The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the technical scheme and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The steam heat exchanger is characterized by comprising a heat exchange coil, wherein the heat exchange coil comprises a plurality of heat exchange tubes arranged in the vertical direction, a steam header and a water condensation header, the steam header is positioned above the heat exchange tubes and communicated with all the heat exchange tubes, the water condensation header is positioned below the heat exchange tubes and communicated with all the heat exchange tubes, the steam header and the water condensation header are arranged in the horizontal direction, the steam heat exchanger further comprises an air inlet pipe, the air inlet pipe is connected with the steam header to provide steam for the steam header, the air inlet pipe is arranged in the vertical direction, and the connection position of the steam header and the air inlet pipe is close to one end of the steam header.

2. The steam heat exchanger according to claim 1, wherein the condensate header comprises a main pipe section and an eccentric section, the eccentric section is located at a part of the condensate header, where the steam header and the air inlet pipe are connected, where the part corresponds to the part in the vertical direction, the pipe diameter of the eccentric section is larger than that of the main pipe section, and the eccentric section is flush with the bottom of the inner wall of the main pipe section.

3. The steam heat exchanger of claim 1, wherein the water outlet end of the condensate header is diagonally located from the connection of the steam header and the inlet pipe.

4. A steam heat exchanger according to claim 1 wherein a trap is provided downstream of the condensate header.

5. A steam heat exchanger according to claim 1 wherein a check valve is provided downstream of the condensate header.

6. A steam heat exchanger according to claim 1 wherein a first shut-off valve, a trap, a check valve and a second shut-off valve are provided in series downstream of the condensate header.

7. A steam heat exchange system comprising a plurality of steam heat exchangers according to any one of claims 1 to 6 and condensate recovery means in communication with the condensate headers of all of the steam heat exchangers.