CN216281329U

CN216281329U - Steam pocket suitable for heat transfer of combination of stranded different temperature medium

Info

Publication number: CN216281329U
Application number: CN202122381199.5U
Authority: CN
Inventors: 黄嗣罗; 林进华; 刘恒; 柯建军
Original assignee: Challenge Petrochemical Machinery Corp
Current assignee: Challenge Petrochemical Machinery Corp
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-12
Anticipated expiration: 2031-09-29

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a steam drum suitable for combined heat exchange of a plurality of strands of different temperature media, which comprises a drum body and heat exchange coil pipes, wherein the drum body circulates a to-be-exchanged fluid through a water vapor connecting pipe and a water supply connecting pipe, the number of the heat exchange coil pipes is more than two, the heat exchange coil pipes penetrate into the drum body from the side wall of the drum body, sections of the heat exchange coil pipes, which are positioned in the drum body, are continuously bent, and the heat exchange coil pipes penetrate through the drum body in a sealing manner; different heat exchange coil pipes circulate heat transfer medium in heat exchange coil pipe by the water supply mechanism who independently connects during the use, can correspond the heat transfer medium type, water pressure or the temperature isoparametric that the configuration corresponds in the heat exchange coil pipe according to the heat transfer requirement at the different positions of barrel, and then adapt to the steam mixture heat exchange efficiency who corresponds the position, improve condensation efficiency to and energy comprehensive utilization efficiency.

Description

Steam pocket suitable for heat transfer of combination of stranded different temperature medium

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a steam drum suitable for combined heat exchange of a plurality of strands of different temperature media.

Background

The heat exchanger is divided into a tube pass and a shell pass, and two media with different temperatures circulate in the tube pass and the shell pass. A schematic connection diagram of an existing heat exchanger and a steam drum structure is shown in fig. 1, and a general flow thereof is as follows: gas to be heat exchanged enters the heat exchange tube through the inlet end socket, heat exchange medium from the high-pressure steam drum C enters a shell-side space H formed by the cylinder body through the boiler water supply connecting tube A for heat exchange, the gas after heat exchange enters the outlet end socket and leaves the heat exchanger, the heat exchange medium leaves the heat exchanger through the water vapor outlet connecting tube B after heat exchange, returns to the high-pressure steam drum C, and continues to flow to the shell-side space H of the heat exchanger after heat exchange in the high-pressure steam drum C, such as a waste heat boiler or a cooler, and the like, and the process is repeated.

The steam pocket of the prior art is combined with the drawings of fig. 1 and 2, and comprises a barrel and a heat exchange tube S, wherein the heat exchange tube S is a coil pipe which is bent in a snake shape and circuitous in the barrel along the length direction, only one tube inlet and one tube outlet are arranged, only one heat exchange medium can flow in the heat exchange tube S, and parameters such as pressure, temperature and the like are fixed and cannot be adjusted. However, the temperature of the medium (water-vapor mixture) to be heat exchanged in the cylinder of the high-pressure steam drum C is not constant, for example, the temperature of the end of the steam drum cylinder close to the inlet end socket is high, the heat exchange is violent, and the actually required condensation requirement is higher; and the temperature near one end of the outlet end socket is lower, the corresponding heat exchange condensation requirement is lower, and if the position in the heat exchange tube requires the circulating liquid to cause low energy utilization rate. Therefore, a steam drum with different heat exchange and condensation efficiencies at different positions is needed.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a steam drum suitable for combined heat exchange of a plurality of strands of media with different temperatures.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a steam pocket suitable for heat transfer is made up to different temperature medium of stranded, includes barrel and heat transfer coil, and the barrel is taken over through steam and is taken over and feed water takeover circulation and treat the heat transfer fluid, characterized by: the number of the heat exchange coil pipes is more than two, the heat exchange coil pipes penetrate into the cylinder body from the side wall of the cylinder body, the sections of the heat exchange coil pipes, which are positioned in the cylinder body, are in a continuous bending shape, and the heat exchange coil pipes penetrate through the cylinder body in a sealing manner; different heat exchange coil pipes are independently connected with a water supply mechanism.

Preferably, two ends of the cylinder are respectively provided with one heat exchange coil.

Preferably, two or more heat exchange coil pipes which are distributed along the axial direction perpendicular to the cylinder body are respectively arranged at two end parts of the cylinder body.

Preferably, the heat exchange coil is arranged in the middle of the cylinder body and penetrates through the side wall of the cylinder body.

Preferably, the heat exchange coil penetrating through the side wall of the cylinder and the heat exchange coils penetrating through two ends of the cylinder are arranged in a direction perpendicular to the axial direction of the cylinder.

Preferably, the bottom of the cylinder body is provided with a plurality of water vapor connecting pipes along the length direction.

Preferably, the water supply mechanism comprises a water pump and a water tank, the water pump is communicated with the water tank and the heat exchange coil pipe through a pipeline, and the water pump is further connected with a water pressure controller and a temperature controller so as to control the water pressure and the temperature of heat exchange media in different heat exchange coil pipes.

Preferably, the heat exchange media circulating in different heat exchange coils are different in type.

Preferably, the cylinder body comprises a cylinder in the middle and hemispherical end enclosures arranged at two ends of the cylinder, and the cylinder and the end enclosures are welded and fixed with each other.

Preferably, the outer surface of the heat exchange coil is coated with a wear resistant layer.

Optionally, more than two heat exchange coils are arranged in a cross way in the sections of the cylinder.

The utility model has the beneficial effects that:

compared with the prior art, the steam drum suitable for multi-strand heat exchange combined by different temperature media has the advantages that more than two heat exchange coil pipes are penetrated at the two end parts of the drum body of the steam drum, and when the steam drum is used, the different heat exchange coil pipes are communicated with the heat exchange media in the heat exchange coil pipes through the independently connected water supply mechanisms, so that the parameters such as the type, the water pressure or the temperature of the heat exchange media in the corresponding heat exchange coil pipes can be correspondingly configured according to the heat exchange requirements of different parts of the drum body, the heat exchange efficiency of a water-vapor mixture at the corresponding parts is further adapted, the condensation efficiency is improved, and the comprehensive utilization efficiency of energy is improved.

Drawings

Fig. 1 is a schematic view of the connection relationship between a heat exchanger and a steam drum in the prior art.

Fig. 2 is a schematic view of another form of heat exchange tube of a prior art drum.

Fig. 3 is a schematic structural diagram of a steam drum suitable for combined heat exchange of a plurality of strands of media with different temperatures in an embodiment, and two groups of heat exchange coil pipes penetrate through two ends of a cylinder body.

Fig. 4 is a schematic structural diagram of a steam drum in another embodiment, and two sets of heat exchange coil pipes are respectively arranged at each end of the drum body.

Fig. 5 is a schematic diagram of adding a set of heat exchange coils in the middle part based on fig. 3.

Fig. 6 is a view that on the basis of fig. 5, a group of heat exchange coils is respectively added at the position of the cylinder body close to the end part, and two groups of heat exchange coils at the two end parts are arranged in the radial direction.

Fig. 7 is a schematic diagram of a cross arrangement of two heat exchange coils in the embodiment.

Reference numerals:

barrel 1, heat transfer coil 2.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.

The steam pocket suitable for heat transfer of combination of stranded different temperature medium of this embodiment, as shown in fig. 3, including barrel 1 and heat transfer coil 2, the circulation of barrel 1 through steam takeover and feedwater takeover is waited to change the hot-fluid, and the bottom of barrel 1 is equipped with a plurality ofly along length direction the steam takeover, like this high temperature steam mixture body gets into in the steam pocket more evenly. Heat exchange coil 2's quantity is two, and in heat exchange coil 2 penetrated barrel 1 from the both ends of barrel 1, and heat exchange coil 2's the festival section that is located barrel 1 is continuous crooked form, and heat exchange coil 2 passes the sealed setting in barrel 1 place, and different heat exchange coil 2 are connected with water supply mechanism independently. During the use, different heat exchange coil pipes 2 are by the water supply mechanism of independent connection circulating heat transfer medium in heat exchange coil pipe 2, can correspond the heat transfer medium type, water pressure or the temperature isoparametric that the configuration corresponds among heat exchange coil pipe 2 according to the heat transfer requirement at 1 different positions of barrel, and then adapt to the steam mixture heat exchange efficiency who corresponds the position, improve condensation efficiency to and energy comprehensive utilization efficiency.

In another embodiment, as shown in fig. 4, two or more heat exchange coils 2 are disposed at two ends of the cylinder 1, respectively, and are distributed in an axial direction perpendicular to the cylinder 1. In the third embodiment, as shown in fig. 5, the heat exchange coil 2 is arranged in the middle of the cylinder 1, and the heat exchange coil 2 passes through the side wall of the cylinder 1. In the fourth embodiment, as shown in fig. 6, the heat exchange coil 2 penetrating through the side wall of the cylinder 1 and the heat exchange coils 2 penetrating through both ends of the cylinder 1 are arranged in a direction perpendicular to the axial direction of the cylinder 1. A fifth embodiment is shown in fig. 7, where more than two heat exchange coils 2 are arranged in criss-cross sections within the cylinder 1. Different arrangement modes enable heat exchange at different positions in the cylinder body 1 to be more targeted and have higher efficiency.

In fact, water supply mechanism includes water pump and water tank, and the water pump passes through pipeline intercommunication water tank and heat exchange coil 2, and the water pump still is connected with water pressure controller and temperature controller to the water pressure and the temperature of the heat transfer medium in the different heat exchange coil 2 of control. Different heat transfer media are filled in water tanks of different water supply mechanisms in practice, so that the types of the heat transfer media circulating in different heat transfer coils 2 are different, the heat transfer efficiency of some heat transfer media is high but the cost is high, the heat transfer effect and the price of some heat transfer media are moderate, and different heat transfer media can be selected pertinently.

The steam pocket comprises a barrel body 1 and a steam collecting device, wherein the barrel body comprises a cylinder in the middle and hemispherical end enclosures arranged at two ends of the cylinder, and the cylinder and the end enclosures are welded and fixed with each other. In practice, the outer surface of the heat exchange coil 2 can be coated with a wear-resistant layer, so that the scouring damage of the high-temperature water-vapor mixture is reduced.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a steam pocket suitable for heat transfer is made up to different temperature medium of stranded, includes barrel and heat transfer coil, and the barrel is taken over through steam and is taken over the circulation of water supply takeover and treat the heat transfer fluid, characterized by: the number of the heat exchange coil pipes is more than two, the heat exchange coil pipes penetrate into the cylinder body from the side wall of the cylinder body, the sections of the heat exchange coil pipes, which are positioned in the cylinder body, are in a continuous bending shape, and the heat exchange coil pipes penetrate through the cylinder body in a sealing manner; different heat exchange coil pipes are independently connected with a water supply mechanism.

2. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: the two ends of the cylinder body are respectively provided with one heat exchange coil.

3. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: more than two heat exchange coil pipes which are distributed along the axial direction perpendicular to the cylinder body are respectively arranged at the two end parts of the cylinder body.

4. A steam drum suitable for heat exchange of a plurality of different temperature media in combination according to claim 1 or 3, wherein: the heat exchange coil is arranged in the middle of the cylinder body and penetrates through the side wall of the cylinder body.

5. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 4, is characterized in that: the heat exchange coil penetrating through the side wall of the cylinder body and the heat exchange coil penetrating through the two ends of the cylinder body are arranged in the direction perpendicular to the axial direction of the cylinder body.

6. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: the bottom of barrel is equipped with a plurality ofly along length direction water vapor takeover.

7. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: the water supply mechanism comprises a water pump and a water tank, the water pump is communicated with the water tank and the heat exchange coil pipes through pipelines, and the water pump is further connected with a water pressure controller and a temperature controller so as to control the water pressure and the temperature of heat exchange media in different heat exchange coil pipes.

8. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: the types of heat exchange media circulating in different heat exchange coils are different.

9. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: the cylinder body comprises a cylinder in the middle and hemispherical end sockets positioned at two ends of the cylinder, and the cylinder and the end sockets are welded and fixed with each other.

10. The steam pocket suitable for the combined heat exchange of a plurality of different temperature media according to claim 1, characterized in that: more than two heat exchange coil pipes are arranged in the barrel in a cross mode.