Electromagnetic scale inhibition device for evaporation and concentration heat exchanger

Abstract

The utility model discloses an electromagnetic scale inhibition device for an evaporation and concentration heat exchanger. The electromagnetic scale inhibition device comprises a heat exchanger, evaporation and concentration solution terminal equipment, a water tank and three electromagnetic scale inhibition instruments, a primary side outlet of the heat exchanger is communicated with a primary side inlet of the heat exchanger through evaporation and concentration solution terminal equipment and a first electromagnetic scale inhibition instrument in sequence, and a secondary side outlet of the heat exchanger is communicated with an inlet of the water tank through a second electromagnetic scale inhibition instrument in sequence; and an outlet of the water tank is communicated with a secondary side inlet of the heat exchanger through a third electromagnetic scale inhibition instrument. The device can realize scale inhibition and does not cause pollution and damage to the environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of scale inhibition and relates to an electromagnetic scale inhibition device for an evaporation concentration heat exchanger. Background Art

[0002] At present, circulating cooling water plays a vital role in the industrial field all over the world. Industrial circulating cooling water often contains impurities such as calcium and magnesium ions. In the actual circulating cooling process, due to the continuous evaporation of water and concentration of dissolved substances caused by high temperature, a large amount of solid scale will be generated on the inner wall of the pipe. The generation of scale will cause the inner diameter of the pipe to decrease and increase the pressure drop of the pipe; at the same time, it will increase the heat transfer resistance of the equipment, seriously reduce the heat transfer performance of the equipment, and shorten the service life of the heat exchange equipment. In actual industry, chemical descaling is often used, such as adding a certain amount of scale inhibitor to the water to prevent scale formation. However, this method will inevitably cause certain pollution to the surrounding environment because the scale inhibitor itself is a chemical agent. Therefore, in the actual circulating cooling water treatment process, electromagnetic scale inhibition technology in the physical method came into being.

[0003] Defects and shortcomings of existing technologies: During the scale inhibition performance test, the chemical scale inhibition method adds a certain amount of chemical agents to the circulating cooling water, causing a certain degree of pollution and damage to the surrounding environment. At the same time, there is little practical research on the application of electromagnetic scale inhibition technology in actual working conditions. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an electromagnetic scale prevention device for an evaporation and concentration heat exchanger, which can prevent scale without causing pollution or damage to the environment.

[0005] To achieve the above-mentioned purpose, the electromagnetic scale inhibition device for evaporation concentration heat exchanger described in the utility model comprises a heat exchanger, an evaporation concentration solution terminal device, a water tank and three electromagnetic scale inhibition instruments;

[0006] The primary side outlet of the heat exchanger is connected to the primary side inlet of the heat exchanger through the evaporation concentration solution terminal equipment and the first electromagnetic scale inhibitor, the secondary side outlet of the heat exchanger is connected to the inlet of the water tank through the second electromagnetic scale inhibitor, and the outlet of the water tank is connected to the secondary side inlet of the heat exchanger through the third electromagnetic scale inhibitor.

[0007] The outlet of the water tank is connected to the secondary side inlet of the heat exchanger through a water pump and a third electromagnetic scale inhibitor.

[0008] The first electromagnetic scale inhibitor, the second electromagnetic scale inhibitor and the third electromagnetic scale inhibitor all include a line protection resistor, a signal generator, a magnetic induction coil and a processing chamber for the flow of working fluid, wherein the magnetic induction coil is wound on the outer wall of the processing chamber, and the magnetic induction coil, the line protection resistor and the signal generator form a series circuit.

[0009] The magnetic induction coil is made of copper core wire.

[0010] The number of turns of the magnetic induction coil can be adjusted according to actual working conditions.

[0011] The circulating working medium is industrial circulating cooling water.

[0012] The water temperature shall not exceed 80℃.

[0013] The water pressure is 2.5MPa.

[0014] The water flow rate is 0~500L / h.

[0015] The utility model has the following beneficial effects:

[0016] The electromagnetic scale inhibition device for evaporation and concentration heat exchanger described in the utility model cuts magnetic flux lines in the magnetic field generated by the electromagnetic scale inhibition instrument during specific operation, and the positively charged ions and the negatively charged ions in the circulating cooling water move irregularly in opposite directions, and unstable scale ions are formed in the continuous collision, so as to achieve the scale inhibition effect, avoid adding chemical agents, and will not cause pollution and damage to the environment. The structure is simple and the practicability is very strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is the structural diagram of the electromagnetic scale inhibitor.

[0019] Among them, 1 is a heat exchanger, 2 is an evaporation concentration solution terminal device, 3 is an electromagnetic scale inhibitor, 4 is a water pump, 5 is a water tank, 6 is a magnetic induction coil, 7 is a processing chamber, 8 is a signal generator, and 9 is a line protection resistor. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only an embodiment of a part of the utility model, not all embodiments, and is not intended to limit the scope of the disclosure of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the utility model.

[0021] The accompanying drawings show schematic diagrams of structures according to the disclosed embodiments of the utility model. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0022] refer to Figure 1 The electromagnetic scale prevention device for evaporation concentration heat exchanger described in the utility model comprises a heat exchanger 1, an evaporation concentration solution terminal device 2, a water pump 4, a water tank 5 and a plurality of electromagnetic scale prevention instruments 3;

[0023] The primary side outlet of the heat exchanger 1 is connected to the primary side inlet of the heat exchanger 1 via the evaporation concentration solution terminal device 2 and the first electromagnetic scale inhibitor 3 in sequence, the secondary side outlet of the heat exchanger 1 is connected to the inlet of the water tank 5 via the second electromagnetic scale inhibitor 3 in sequence, and the outlet of the water tank 5 is connected to the secondary side inlet of the heat exchanger 1 via the water pump 4 and the third electromagnetic scale inhibitor 3.

[0024] refer to Figure 2 The first electromagnetic scale inhibitor 3, the second electromagnetic scale inhibitor 3 and the third electromagnetic scale inhibitor 3 all include a line protection resistor 9, a signal generator 8, a magnetic induction coil 6 and a processing chamber 7 for the flow of working fluid, wherein the magnetic induction coil 6 is wound on the outer wall of the processing chamber 7, and the magnetic induction coil 6, the line protection resistor 9 and the signal generator 8 form a series circuit. When working, the magnetic induction coil 6 is connected to the signal generator 8, and the electromagnetic signal is transmitted to the processing chamber 7 through the magnetic induction coil 6, so that the solution in the processing chamber 7 is in a turbulent state, and the magnetic lines of induction are cut in the magnetic field generated by the magnetic induction coil 6. The positively charged ions and the negatively charged ions in the circulating cooling water move irregularly in opposite directions, and unstable scale ions are formed in the continuous collision to achieve the effect of scale inhibition.

[0025] During operation, the circulating cooling water enters the electromagnetic scale inhibitor 3 for treatment. The water treated by the electromagnetic scale inhibitor 3 is not easy to form deposited scale on the pipe wall, so as to meet the scale inhibition requirements.

[0026] The magnetic induction coil 6 is made of copper core wire, and the number of coil turns can be adjusted according to actual working conditions.

[0027] When the utility model is actually used, the water temperature does not exceed 80°C, the water pressure is 2.5MPa, the working medium is industrial circulating cooling water, and the water flow rate is 0-500L / h; first check the entire working system; set one or more electromagnetic scale inhibitors 3 according to the distance between the water tank 5 and the heat exchanger 1; check the system water flow rate, pressure and temperature; operate the system and adjust the number of turns of the magnetic induction coil 6; turn on the electromagnetic scale inhibitor 3, and operate the system to prevent scale.

[0028] The utility model obtains the best electromagnetic scale inhibition performance of the evaporation concentration system by regulating the number of turns of the magnetic induction coil 6. The excellent scale inhibition performance can provide experimental guidance for practical engineering. The design is reasonable and the structure is simple, and the scale inhibition purpose of the evaporation concentration heat exchange device can be effectively achieved.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. An electromagnetic scale prevention device for an evaporation and concentration heat exchanger, characterized in that: It comprises a heat exchanger (1), an evaporation concentrated solution terminal device (2), a water tank (5) and three electromagnetic scale inhibitors (3); The primary side outlet of the heat exchanger (1) is connected to the primary side inlet of the heat exchanger (1) via the evaporation concentrated solution terminal device (2) and the first electromagnetic scale inhibitor (3), the secondary side outlet of the heat exchanger (1) is connected to the inlet of the water tank (5) via the second electromagnetic scale inhibitor (3), and the outlet of the water tank (5) is connected to the secondary side inlet of the heat exchanger (1) via the third electromagnetic scale inhibitor (3).

2. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 1 is characterized in that: The outlet of the water tank (5) is connected to the secondary side inlet of the heat exchanger (1) via the water pump (4) and the third electromagnetic scale inhibitor (3).

3. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 1, characterized in that: The first electromagnetic scale inhibitor (3), the second electromagnetic scale inhibitor (3) and the third electromagnetic scale inhibitor (3) all comprise a line protection resistor (9), a signal generator (8), a magnetic induction coil (6) and a processing chamber (7) for the flow of working fluid, wherein the magnetic induction coil (6) is wound on the outer wall of the processing chamber (7), and the magnetic induction coil (6), the line protection resistor (9) and the signal generator (8) form a series circuit.

4. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 3 is characterized in that: The magnetic induction coil (6) is made of copper core wire.

5. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 3, characterized in that: The number of turns of the magnetic induction coil (6) can be adjusted according to actual working conditions.

6. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 3, characterized in that: The circulating working medium is industrial circulating cooling water.

7. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 6, characterized in that: The water temperature shall not exceed 80℃.

8. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 6, characterized in that: The water pressure is 2.5MPa.

9. The electromagnetic scale prevention device for evaporation concentration heat exchanger according to claim 6, characterized in that: The water flow rate is 0~500L / h.

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