Vibration desalination crystallization device and method for heat exchanger of seawater desalination system

Abstract

The invention provides a vibration desalting crystallization device and method for a heat exchanger of a seawater desalination system, the vibration desalting crystallization device comprises a control module, a heat exchange tube, a plurality of pneumatic hammers and a control module, the heat exchange tube is arranged in seawater, the pneumatic hammers are arranged on the outer side of the heat exchange tube, the control module is connected with the pneumatic hammers, and the control module is connected with the control module. And knocking of the pneumatic hammer on the heat exchange tube is realized. The method comprises the following steps: arranging a pneumatic hammer on the wall surface of a heat exchange tube with salt crystals; the interval time of the timer is set through the PLC, and knocking of the pneumatic hammer is controlled through the timer of the PLC. And after knocking is completed, the heat exchange tube continues to exchange heat until heat exchange is completed. When the vibration desalting crystallization device of the heat exchanger of the seawater desalination system exchanges heat in seawater, salt crystals on the pipe wall of the heat exchange pipe can be effectively removed through knocking of the pneumatic hammer, and the heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The present invention relates to seawater desalination and a heat exchanger, and in particular to a vibration desalination crystallization device and method for a seawater desalination system heat exchanger. Background Art

[0002] In existing technologies, desalination systems often increase the rate of seawater concentration and improve system efficiency by adding heat exchange tubes. Since desalination systems operate in highly concentrated saltwater for extended periods, and the seawater is continuously concentrated during the desalination process, salt precipitates on the walls of the heat exchange tubes, forming crystals. Salt crystals have a high thermal resistance, severely impacting the heat transfer efficiency of the heat exchanger and, consequently, the performance of the desalination system. Effectively removing these crystals is a major challenge.

[0003] Currently, manual removal is generally used to remove salt crystals from the walls of heat exchange tubes in seawater desalination systems. However, due to the small spacing between the heat exchange tubes, this removal method is inefficient and affects the operating efficiency of the equipment. Summary of the Invention

[0004] In response to the problem of salt crystal removal in the prior art, the present invention provides a vibration desalination crystallization device and method for a seawater desalination system heat exchanger. When the vibration desalination crystallization device of the seawater desalination system heat exchanger is performing heat exchange in seawater, salt crystals on the wall of the heat exchange tube can be effectively removed by striking with a pneumatic hammer, thereby improving the heat exchange efficiency of the heat exchanger.

[0005] The present invention is achieved through the following technical solution: a vibration desalination crystallization device for a seawater desalination system heat exchanger, comprising a control module, a heat exchange tube, a pneumatic hammer and a control module, wherein the heat exchange tube is arranged in seawater, a pneumatic hammer is arranged on the outside of the heat exchange tube, a plurality of pneumatic hammers are provided, and the control module is connected to the pneumatic hammer to realize the pneumatic hammer striking the heat exchange tube.

[0006] Furthermore, the movement direction of the pneumatic hammer and the striking surface of the heat exchange tube are perpendicular to each other.

[0007] Furthermore, a plurality of pneumatic hammers are arranged in an equidistant annular array on the outer wall of the heat exchange tube.

[0008] Furthermore, the heat exchange tube is made of a hose made of Teflon or other materials.

[0009] Furthermore, the control module includes a PLC controller, a timer and a power supply.

[0010] Furthermore, a power supply is provided on the PLC controller, a timer is provided in the PLC controller, and the PLC controller is connected to a pneumatic hammer.

[0011] Furthermore, the heat exchange tube and the pneumatic hammer are fixedly connected, and the pneumatic hammer is arranged on the wall surface of the heat exchange tube through the heat exchange tube fastening bolts.

[0012] A vibration desalination crystallization method for a seawater desalination system heat exchanger, the method comprising the following steps:

[0013] A pneumatic hammer is set on the wall of the heat exchange tube where salt crystals exist;

[0014] The interval time of the timer is set through the PLC controller, and the striking of the pneumatic hammer is controlled by the timer of the PLC controller;

[0015] After the knocking is completed, the heat exchange tube continues to exchange heat until the heat exchange is completed.

[0016] Furthermore, the time interval of the timer is determined according to the degree of crystallization of the wall surface of the heat exchange tube.

[0017] Furthermore, the start time of the timer is determined according to the thickness of the salt crystals.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The present invention provides a vibration desalination crystallization device for a seawater desalination system heat exchanger. When the vibration desalination crystallization device of the seawater desalination system heat exchanger performs heat exchange in seawater, salt crystals on the wall of the heat exchange tube can be effectively removed by striking with a pneumatic hammer, thereby improving the heat exchange efficiency of the heat exchanger.

[0020] Furthermore, the pneumatic hammer provided in the present invention is arranged perpendicularly to the axis of the heat exchange tube, which can effectively remove crystals on the wall surface of the heat exchange tube.

[0021] Furthermore, the pneumatic hammers in the present invention are provided in plurality, which can effectively improve the efficiency of crystal removal. At the same time, by providing an equidistant annular array, the stress borne by the tube body is evenly distributed, effectively increasing the service life of the device.

[0022] Furthermore, the pneumatic hammer and the heat exchange tube are fixedly connected to ensure the cleaning effect while guaranteeing the stability of the device.

[0023] Furthermore, the present invention provides a vibration desalination crystallization method for a seawater desalination system heat exchanger, which can effectively realize the flexible application of the device. According to the control part, it realizes the effective utilization of the heat exchange tube decrystallization device under different working conditions. At the same time, through the setting of the timer, the actual use of the heat exchange work is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of a control module for a vibration desalination crystallizer for a seawater desalination system heat exchanger provided by the present invention;

[0026] Figure 2 A schematic diagram of the cross-sectional arrangement of heat exchange tubes in a vibration desalination crystallization device for a seawater desalination system heat exchanger provided by the present invention;

[0027] Figure 3 A schematic diagram of the structure of a pneumatic hammer 2 of a vibration desalination crystallization device for a heat exchanger in a seawater desalination system;

[0028] In the figure: heat exchange tube fastening bolt 1, pneumatic hammer 2, heat exchange tube wall 3, heat exchange tube 5. DETAILED DESCRIPTION

[0029] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example 1:

[0035] A vibration desalination crystallization device for a heat exchanger in a seawater desalination system comprises a heat exchange tube 5, a pneumatic hammer 2 and a control module.

[0036] The heat exchange tube 5 is made of a flexible tube made of Teflon or other materials. The heat exchange tube 5 is arranged in seawater for heat exchange. The temperatures of the internal and external media of the heat exchange tube 5 are different, and heat is exchanged through the tube wall.

[0037] The outer wall surface 3 of the heat exchange tube is fixed with multiple pneumatic hammers 2.

[0038] The controller includes a PLC controller and a timer. The timer sends a signal to the PLC controller at a set time interval. The PLC controller controls the pneumatic hammer to start, thereby achieving the effect of timed desalination and crystallization.

[0039] The PLC controller controls the connection of the pneumatic hammer 2 , which directly strikes the heat exchange tube 5 to generate vibration when turned on, thereby removing crystals.

[0040] An embodiment of the present invention further provides a vibration desalination crystallization method for a seawater desalination system heat exchanger, comprising a PLC controller, a timer, and a power supply.

[0041] The timer sends a signal to the PLC controller after a specific time interval, and the PLC controller controls the pneumatic hammer 2 to strike the wall surface 3 of the heat exchange tube.

[0042] The PLC controller controls the pneumatic hammer 2, and the timer is used to set the start time of the pneumatic hammer 2, that is, the time for vibrating the heat exchange tube 5 to desalinate and crystallize.

[0043] The timer is set to start when the thickness of the salt crystals on the heat exchange tube 5 reaches the point where cleaning is required. When the timer reaches the time, the PLC controller controls the pneumatic hammer 2 to directly strike the heat exchange tube wall 3 to generate vibration, so that the salt crystals fall off the heat exchange tube wall.

[0044] The PLC controller controls the timer to reset, and heat exchange continues, and the timer restarts timing, thereby realizing full-automatic vibration desalination crystallization of the seawater desalination system heat exchanger.

[0045] Example 2:

[0046] The present invention provides a vibration desalination crystallization device for a heat exchanger in a seawater desalination system. A pneumatic hammer 2 is arranged around the outer side of a heat exchange tube 5. The striking direction of the pneumatic hammer 2 is perpendicular to the striking surface of the heat exchange tube 5. The pneumatic hammer 2 is connected to the wall surface of the heat exchange tube 5 through a heat exchange tube fastening bolt 1. In the actual setting of this embodiment, the pneumatic hammer 2 is fixedly connected to the outer wall surface of the heat exchange tube 5.

[0047] like Figure 3 As shown, the heat exchange tube 5 is arranged in seawater in an S shape, and multiple pneumatic hammers 2 are arranged on the outside of the tube wall of the heat exchange tube 5. Multiple pneumatic hammers 2 are arranged, and multiple pneumatic hammers 2 are arranged in an array on the same cross-section of the heat exchange tube 5. The pneumatic hammers 2 are connected by heat exchange tube fastening bolts 1. The heat exchange tube fastening bolts 1 are evenly distributed in an array around the heat exchange tube 5. Different numbers of pneumatic hammers 2 can be arranged on the heat exchange tube fastening bolts 1 according to different working conditions. The structure of this device is provided with 8 heat exchange tube fastening bolts 1, and pneumatic hammers 2 are arranged at intervals in multiple heat exchange tube fastening bolts 1. A total of 4 pneumatic hammers 2 are provided to remove crystals under this working condition.

[0048] like Figure 1 As shown, the present invention provides a vibration desalination crystallization method for a heat exchanger in a seawater desalination system. By connecting a pneumatic hammer and a control module, the pneumatic hammer 2 is controlled in the device. The device is controlled according to the PLC controller, timer and power supply in the control module, wherein:

[0049] A power supply is set on the PLC controller, a timer is set in the PLC controller, and the PLC controller is connected to the pneumatic hammer 2. The timer inside the PLC controller is used to control the striking time of the pneumatic hammer 2, specifically including the control of the start and end time and the interval time, until the desalination work is completed.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0051] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made based on the technical solution in accordance with the technical concept proposed by the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A vibration desalination crystallization device for a seawater desalination system heat exchanger, characterized in that: The invention comprises a control module, a heat exchange tube (5), a pneumatic hammer (2) and a control module, wherein the heat exchange tube (5) is arranged in seawater, a pneumatic hammer (2) is arranged outside the heat exchange tube (5), a plurality of pneumatic hammers (2) are provided, and the control module and the pneumatic hammer (2) are connected to realize the pneumatic hammer (2) striking the heat exchange tube (5).

2. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: The movement direction of the pneumatic hammer (2) and the striking surface of the heat exchange tube (5) are perpendicular to each other.

3. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: A plurality of pneumatic hammers (2) are arranged in an equidistant annular array on the outer wall surface of the heat exchange tube (5).

4. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: The heat exchange tube (5) is made of a flexible tube made of Teflon or other materials.

5. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: The control module includes a PLC controller, a timer and a power supply.

6. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: A power supply is provided on the PLC controller, a timer is provided in the PLC controller, and the PLC controller is connected to the pneumatic hammer (2).

7. The vibration desalination crystallization device for a seawater desalination system heat exchanger according to claim 1, characterized in that: The heat exchange tube (5) and the pneumatic hammer (2) are fixedly connected, and the pneumatic hammer (2) is connected and arranged on the wall surface (3) of the heat exchange tube via the heat exchange tube fastening bolts (1).

8. A vibration desalination crystallization method for a seawater desalination system heat exchanger, characterized in that: The method comprises the following steps: A pneumatic hammer (2) is provided on the wall surface of the heat exchange tube (5) where salt crystals are present; The time interval of the timer is set by the PLC controller, and the striking of the pneumatic hammer (2) is controlled by the timer of the PLC controller; After the knocking is completed, the heat exchange tube (5) continues to exchange heat until the heat exchange is completed.

9. The vibration desalination crystallization method for a seawater desalination system heat exchanger according to claim 8, characterized in that: The time interval of the timer is determined according to the degree of crystallization of the heat exchange tube wall (3).

10. The vibration desalination crystallization method for a seawater desalination system heat exchanger according to claim 8, characterized in that: The start time of the timer is determined according to the thickness of the salt crystal (5).

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