阅读说明：本技术 一种低温多效海水淡化装置喷淋换热系统 (Low-temperature multi-effect seawater desalination device spraying heat exchange system ) 是由 依庆文 邢兆强 苏大鹏 韩志杰 于 2020-04-16 设计创作，主要内容包括：本发明中设计了一种低温多效海水淡化装置喷淋换热系统,其特征在于,包括：多个换热管束模块及多个喷淋管束模块,所述换热管束模块外壁上设有挂耳及滑槽,所述多个换热管束模块之间依靠相互配合的挂耳及滑槽实现上下连接；所述换热管束模块前端设有前端壁,后端设有后端壁,所述多个换热管束模块之间依靠相互配合的前端壁及后端壁实现前后连接,模块化设计便于安装、操作简单、省工省力,可以单独进行拆卸检修,维修方便,缩短了检修工期,提高了设备利用率。(The invention designs a low-temperature multi-effect seawater desalination device spray heat exchange system, which is characterized by comprising the following components: the heat exchange tube bundle module comprises a plurality of heat exchange tube bundle modules and a plurality of spray tube bundle modules, wherein hangers and chutes are arranged on the outer walls of the heat exchange tube bundle modules, and the heat exchange tube bundle modules are connected up and down by virtue of the hangers and the chutes which are matched with each other; the heat exchange tube bundle module front end is equipped with the front end wall, and the rear end is equipped with the rear end wall, rely on front end wall and rear end wall of mutually supporting to realize front and back connection between a plurality of heat exchange tube bundle modules, the modularized design is convenient for install, easy operation, labour saving and labor saving can dismantle the maintenance alone, and easy maintenance has shortened the maintenance time limit for a project, has improved equipment utilization.)

1. The utility model provides a low temperature multiple effect sea water desalination device sprays heat transfer system which characterized in that includes: the heat exchange tube bundle module comprises a plurality of heat exchange tube bundle modules and a plurality of spray tube bundle modules, wherein hangers and chutes are arranged on the outer walls of the heat exchange tube bundle modules, and the heat exchange tube bundle modules are connected up and down by virtue of the hangers and the chutes which are matched with each other; the heat exchange tube bundle module is divided into a front end and a rear end, and corresponding blocking plates are arranged at the two ends of the heat exchange tube bundle module according to a water vapor flow to form a closed space for collecting fresh water generated by steam condensation. The heat exchange tube bundle modules are connected back and forth by means of the front end wall and the rear end wall which are matched with each other.

2. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: the shower bundle module is arranged above the heat exchange tube bundle module and is spaced apart from the heat exchange tube bundle module by a distance.

3. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: the edge is equipped with the sealing washer in front end wall a week, follows rear end wall a week is equipped with the seal groove, seals through the sealing washer and the seal groove of mutually supporting between a plurality of heat exchanger tube bundle modules, forms airtight space in the front and back junction of heat exchanger tube bundle module and heat exchanger tube bundle module.

4. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 3, characterized in that: and a water drainage slope is arranged on the rear end wall and is arranged in front of the sealing groove.

5. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: the hangers are arranged along the upper edges of two sides of the heat exchange tube bundle module.

6. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: the sliding groove is arranged along the lower edges of the two sides of the heat exchange tube bundle module.

7. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: and an anti-collision rubber strip is arranged on the inner wall of the heat exchange tube bundle module.

8. The spray heat exchange system of the low-temperature multi-effect seawater desalination device as claimed in claim 1, characterized in that: and the heat exchange tube bundle in the heat exchange tube bundle module is set to have a certain inclination angle.

Technical Field

The invention relates to a heat exchange system applied to seawater desalination, in particular to a spray heat exchange system of a low-temperature multi-effect seawater desalination device.

Background

A low-temp multi-effect seawater desalinating apparatus is a hot-method seawater desalinating process, and features that a series of evaporators containing spray tube bundles (or effect for short) are serially connected, a certain amount of steam is input to the interior of heat exchange tube, a certain amount of pretreated seawater is sprayed to the upper part of tube, the seawater is heated and exchanged to become secondary steam, which is then condensed to obtain desalinated water with multiple times of steam amount.

The heat exchange tube of the low-temperature multi-effect seawater desalination device is usually made of copper alloy, aluminum alloy and titanium tube and is arranged in the effect body. The upper part of the effect body is raw seawater which is pretreated, degassed, preheated, added with medicine and preliminarily preheated, and the upper part of the heat exchange tube is distributed with liquid by an upper spraying device. The original seawater flows from top to bottom, and a liquid film is formed on the surface of the heat exchange tube for heat exchange, so that a falling film evaporation process is formed.

Because the system runs for a long time, the surface of the heat exchange tube has salt deposition, scaling and corrosion of different degrees, the heat exchange, the water quality of the discharged water and the safe and stable running of the device are influenced, and the large-area corrosion perforation and scaling blockage of the heat exchange tube can be caused in serious conditions, so that the shutdown maintenance is needed. Because the internal space of the seawater desalination device is narrow and small, a large number of heat exchange tubes cannot be maintained and replaced by personnel entering the inside of the effect body, the effect body is usually removed and then treated, the consumption time is long, the working strength is high, and the reliability and the normal standby period of the device are influenced.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a spraying heat exchange system of a low-temperature multi-effect seawater desalination device.

The technical scheme adopted by the invention for solving the related technical problems is as follows: the utility model provides a low temperature multiple effect sea water desalination device sprays heat transfer system which characterized in that includes: the heat exchange tube bundle module comprises a plurality of heat exchange tube bundle modules and a plurality of spray tube bundle modules, wherein hangers and chutes are arranged on the outer walls of the heat exchange tube bundle modules, and the heat exchange tube bundle modules are connected up and down by virtue of the hangers and the chutes which are matched with each other; the heat exchange tube bundle module is divided into a front end wall and a rear end wall, corresponding blocking plates are arranged at the two ends of the heat exchange tube bundle module according to a water vapor flow to form a closed space for collecting fresh water generated by steam condensation, and the plurality of heat exchange tube bundle modules are connected front and back by means of the front end wall and the rear end wall which are matched with each other.

Further, the shower bundle module is disposed above the heat exchanger bundle module and spaced a distance from the heat exchanger bundle module.

Further, follow front end wall a week is equipped with the sealing washer, follows rear end wall a week is equipped with the seal groove, seals through the sealing washer and the seal groove of mutually supporting between a plurality of heat exchanger tube bundle modules, forms airtight space in the front and back junction of heat exchanger tube bundle module and heat exchanger tube bundle module.

Further, a water drainage slope is arranged on the rear end wall and is arranged in front of the sealing groove.

Furthermore, the hangers are arranged along the upper edges of two sides of the heat exchange tube bundle module.

Further, the sliding groove is arranged along the lower edges of two sides of the heat exchange tube bundle module.

And furthermore, an anti-collision rubber strip is arranged on the inner wall of the heat exchange tube bundle module.

Furthermore, a certain inclination angle is set for the heat exchange tube bundle in the heat exchange tube bundle module.

The invention has the advantages that:

the invention designs a low-temperature multi-effect seawater desalination device spray heat exchange system, which has the following advantages:

(1) the modular design is convenient to install, simple to operate, labor-saving and labor-saving, and if the system needs to check the condition of the heat exchange tube bundle, the modular assembly mode is convenient to disassemble.

(2) If the heat exchange tube in the system has the conditions of salt accumulation, scaling, corrosion and the like, the heat exchange tube can be detached and overhauled independently, the maintenance is convenient, the overhaul period is shortened, and the equipment utilization rate is improved.

(3) If the condition that the heat exchange tube bundle corrodes the perforation occurs, the corresponding damaged module can be replaced in the maintenance period, and the reduction of the heat efficiency caused by the conventional tube blocking mode is avoided.

(4) Because of adopting the modularization series arrangement, the steam condensate water is collected at the joint part of the module and the module, and is collected and flows through the heat exchange tubes at the 1-2 layers of the bottom, thereby greatly reducing the water storage quantity in the heat exchange tubes at the upper part, reducing the resistance of the steam flow in the heat exchange tube bundle and improving the heat efficiency.

(5) Through the modularized arrangement of the heat exchange tube bundle, the length of a single heat exchange tube is reduced, the bending deformation of the heat exchange tube is avoided, and the air flow resistance is reduced.

(6) Through the modular arrangement of the heat exchange tube bundles, steam in each tube bundle is rearranged in the module and module connecting space, and the heat utilization efficiency is improved.

(7) If the conditions of salt accumulation, scaling and the like of the heat exchange tube bundle are serious, the chemical cleaning can be carried out outside the effect body after the disassembly.

(8) By adopting the modularized distributed design, the reserved space in the effective body can be effectively reduced, and the utilization rate of the space in the effective body is improved.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of an overall arrangement of the present invention;

fig. 2 is a schematic view of an angle configuration of a heat exchange tube bundle module of the present invention;

FIG. 3 is a schematic view of another angle configuration of a heat exchange tube bundle module of the present invention;

FIG. 4 is a schematic view of the internal flow of a heat exchange tube bundle module of the present invention;

fig. 5 is a schematic view of a front-to-back series combination of heat exchange tube bundle modules of the present invention.

Wherein:

1. a heat exchange tube bundle module; 2. hanging a lug; 3. a chute; 4. a drainage ramp; 5. a sealing groove; 6. a seal ring; 7. an anti-collision rubber strip; 8. supporting the slide rail; 9. a heat exchange pipe; 10. a spray tube bundle module; 11. a front end wall; 12. a rear end wall.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, a layout diagram of a spray heat exchange system of a low-temperature multi-effect seawater desalination plant of the present invention comprises: the system comprises a plurality of heat exchange tube bundle modules 1 and a plurality of shower bundle modules 10, wherein the shower bundle modules 10 are arranged above the heat exchange tube bundle modules 1 and are spaced from the heat exchange tube bundle modules 1 by a certain distance.

The number of the heat exchange tube bundle modules 1 in series connection, the number of the layers arranged up and down, and the number and the specification of the heat exchange tube bundles in the heat exchange tube bundle modules 1 are set according to the specific process flow.

The heat exchange tube bundle module 1 of the superiors is fixed on an effective body inner wall or a supporting slide rail 8 through a hanging lug 2, the heat exchange tube bundle module 1 is easy to damage due to the fact that the number of layers is too many in order to avoid the heat exchange tube bundle module 1, the number of layers of general hanging layers is not more than 3 layers of arrangement, the heat exchange tube bundle module 1 exceeding 3 layers can support the slide rail 8 in the internal design of the effective body, and damage to the heat exchange tube bundle module 1 due to dead weight and water weight in operation is reduced.

The feed seawater is uniformly distributed on the heat exchange tube bundle in the heat exchange tube bundle module 1 through the nozzles of the spray tube bundle module 10, and naturally flows down along the heat exchange tubes 9 under the action of gravity, so that the heat exchange process is realized.

As shown in fig. 2 and 3, the outer wall of the heat exchange tube bundle module 1 is provided with a hanging lug 2 and a sliding groove 3, the hanging lug 2 is arranged along the upper edges of two sides of the heat exchange tube bundle module 1, the sliding groove 3 is arranged along the lower edges of two sides of the heat exchange tube bundle module 1, and the plurality of heat exchange tube bundle modules 1 are connected up and down by the hanging lug 2 and the sliding groove 3 which are matched with each other.

Be equipped with crashproof adhesive tape 7 on the heat exchanger tube bank module 1 inner wall, avoid the inner wall to lead to the fact wearing and tearing to heat exchange tube 9.

As shown in fig. 4 and 5, the heat exchange tube bundle module 1 is provided with a front end wall 11 at the front end and a rear end wall 12 at the rear end, and the plurality of heat exchange tube bundle modules 1 are connected back and forth by the front end wall 11 and the rear end wall 12 which are matched with each other.

Edge 11 a week of front end wall is equipped with sealing washer 6, follows 12 a week of rear end wall is equipped with seal groove 5, seals through mutually supporting sealing washer 6 and seal groove 5 between 9 bundle modules 1 of a plurality of heat exchange tubes, forms airtight space at the front and back junction of heat exchange tube bundle module 1 and heat exchange tube bundle module 1.

In the heat exchange process, steam flows and condenses in the heat exchange tubes 9, and fresh water generated by cooling is collected integrally in a closed space formed at the joint of the two modules, flows through the heat exchange tubes 9 on the 1-2 layers at the bottom and enters the tail end, finally enters a product water collection system through a product water collection water tank formed by additionally arranging a blocking plate at the tail end, and is pumped out by a product water pump.

And a water drainage slope 4 is arranged on the rear end wall 12, and the water drainage slope 4 is arranged in front of the sealing groove 5, so that the situation that feed seawater flows into a closed space between adjacent heat exchange tube bundle modules 1 and is mixed into product water can be avoided due to the arrangement of the water drainage slope 4.

Certain inclination is set for to the heat exchanger tube bank in the heat exchanger tube bank module 1, is convenient for product water to collect to the water tank, the collection water tank communicates each other with adjacent effect body heat exchanger tube bank collection water tank.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.