Multi-channel composite variable-frequency scale ion resonance facility

Abstract

The utility model provides a multi-channel composite variable-frequency scale ion resonance facility which comprises a shell, a spiral cable, a water inlet straight pipe, a middle spiral coil pipe, a water outlet straight pipe, a flow regulating valve, a composite variable-frequency signal generator and a power supply, and the shell is a cylinder and is made of 316 austenitic stainless steel or 304 austenitic stainless steel; the spiral cable is spirally wound and mounted on the surface of the shell; the water inlet straight pipe, the middle spiral coil pipe and the water outlet straight pipe are made of magnetisable materials; the composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power source and the spiral cable, and circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and generates resonance under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ion combination and even precipitation state is converted into the calcium and magnesium ion unsaturated state with high fluid solubility, and conditions are provided for subsequent access to a water inlet of heat exchange equipment, equipment maintenance cost reduction and heat exchange efficiency improvement.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of petrochemical industry, relates to a kind of equipment circulating cooling water scale removal technology, and specifically, it relates to a kind of multi-channel composite variable frequency scale ion resonance facility. BACKGROUND

[0002] After the long-term operation of equipment, the scale is easy to deposit on the heat transfer surface of pipeline, heat exchanger and other equipment, which affects the normal heat transfer and reduces the heat exchange efficiency; at the same time, the heat exchanger is blocked, the system resistance is increased, and the efficiency of water pump and cooling tower is reduced; in the long run, the energy consumption of factory production increases, the output decreases, the equipment maintenance and replacement cost increases, and the production is disturbed.

[0003] At present, scale removal and prevention is still a big problem in the world, and there are mainly two kinds of scale removal and prevention technologies applied in the world, namely chemical scale removal and physical scale removal technology. Chemical scale removal is to add chemical agents with scale inhibition function (i.e. scale inhibitors) in water, and the scale inhibition mechanism is to inhibit the normal growth of various scaleable grains in water and disturb the normal aggregation and growth between grains, so as to achieve the purpose of scale removal and prevention. Chemical scale removal has the disadvantages of high cost, pollution and strong specificity. Physical scale removal method has the advantages of low cost, no pollution and strong universality. At present, the research of physical scale removal mainly focuses on various physical fields such as sound field, magnetic field and electric field. The physical scale removal technologies currently in use are (1) ultrasonic scale removal technology; (2) ION-STICK processor; (3) electromagnetic scale removal. Among the three technologies, electromagnetic scale removal technology has more advantages and is widely used. The multi-channel composite variable frequency scale ion resonance facility described in the utility model belongs to physical electromagnetic scale removal technology.

[0004] Since France and Cabell applied for a patent in 1890, magnetic field has been used for water treatment for more than 100 years; after T Vermeriven discovered in 1945 that "magnetic water" can reduce the formation of boiler scale, the magnetic treatment technology of water has been widely researched and developed; in the 1970s, the United States and Japan successively launched the research of electromagnetic treatment, and the academic and business circles invested a large amount of manpower and funds to research electromagnetic treatment, and achieved a large number of research results and patent inventions, and built large-scale electromagnetic treatment equipment; in the 1980s, scientists conducted more in-depth experimental research on electromagnetic treatment, and accumulated a large amount of experimental data.

[0005] Patent ZL200820128064.X discloses a variable frequency electromagnetic descaling device, which comprises a variable frequency signal generator, a power amplifier and a coil, the output end of the variable frequency signal generator is connected with the input end of the power amplifier, the output end of the power amplifier is connected with the coil, and a load detection circuit is further arranged between the coil and the input end of the variable frequency signal generator. The input end of the circuit is connected with the coil, and the detection signal output end is connected with the input end of the variable frequency signal generator. The detection circuit can detect the change of the signal in the coil and transmit the change to the variable frequency signal generator.

[0006] Patent CN201510410210.2 discloses a variable frequency electromagnetic descaling device, which comprises a control box, a start-stop control device, a power supply system, a variable frequency controller, a parameter setting monitoring device, an electromagnetic coil start-stop control device, a power supply system, a variable frequency controller, a parameter setting monitoring device, which are all installed on the control box, and the electromagnetic coil is installed on the equipment to be processed and connected to the control box. After the device is started, the variable frequency controller changes the power voltage into a high-frequency electromagnetic signal with variable amplitude and frequency according to the requirements of the parameter setting monitoring device and loads it on the electromagnetic coil.

[0007] Patent CN201821656991.9 discloses an electromagnetic pulse descaling instrument, which comprises a shell, a controller, a control circuit and a descaling winding, the controller is connected with the input end of the control circuit, and the output end of the control circuit is connected with the descaling winding; the controller and the control circuit are arranged in the shell; the controller is further connected with a temperature sensor, and the temperature sensor is arranged in the water to be descaled.

[0008] At present, the main shortcomings of the variable frequency electromagnetic descaling facility are that (1) it is suitable for the condition that the pipeline water flow rate is slow, and if the pipeline flow rate exceeds the maximum specified flow rate, the ideal descaling effect cannot be achieved; (2) the effective magnetic field range is small, and the magnetic field composite variable frequency cannot be realized; (3) there is no inlet pipeline flow rate regulating device, the magnetic field frequency and the pipeline flow rate cannot be matched scientifically, and the calcium and magnesium ions in the circulating water cannot be removed in the variable frequency magnetic field frequency. SUMMARY

[0009] In order to solve the technical problems that the pipeline flow rate is fast and the ideal descaling effect cannot be achieved, the effective magnetic field range is small, the magnetic field composite variable frequency cannot be realized, and the circulating water pipeline flow rate and the magnetic field frequency are not matched in the prior art, the utility model provides a multi-channel composite variable frequency scale ion resonance facility.

[0010] The utility model provides a kind of multi-channel composite frequency conversion scale ion resonance facility, which comprises a shell, a spiral cable, a water inlet straight pipe, an intermediate spiral coil pipe, a water outlet straight pipe, a composite frequency conversion signal generator and a power supply. The shell is a cylinder made of 316 austenitic stainless steel or 304 austenitic stainless steel to ensure that the spiral cable is wound on the shell without magnetization. The spiral cable is spirally wound and installed on the surface of the shell. The water inlet straight pipe, the intermediate spiral coil pipe and the water outlet straight pipe are centrally installed inside the shell. The central axis of the intermediate spiral coil pipe coincides with the central axis of the shell. The water inlet straight pipe, the intermediate spiral coil pipe and the water outlet straight pipe are made of magnetizable material. The composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power supply and the spiral cable. The composite electromagnetic frequency conversion signals are generated by the internal control chip and periodically change. The composite electromagnetic frequency is determined by the main scale-forming ions injected into the circulating water.

[0011] The circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and resonates under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ions are transformed from the state of combination or even precipitation into the unsaturated state of calcium and magnesium ions with high fluid solubility. Then, the water is connected to the inlet of the heat exchanger device to improve the heat exchange efficiency of the heat exchanger, reduce the maintenance and replacement cost of the heat exchange equipment, and improve the production efficiency.

[0012] Preferably, the diameter of the water inlet straight pipe, the intermediate spiral coil pipe and the water outlet straight pipe is DN20-DN2000.

[0013] Preferably, the water inlet straight pipe, the intermediate spiral coil pipe and the water outlet straight pipe can be connected by one pipe or multiple branch pipes. The multiple branch pipes are 2-20 pipes.

[0014] Preferably, the composite frequency conversion signal generator is connected between the power supply and the spiral cable. According to the type and concentration of scale-forming ions, the composite electromagnetic frequency conversion signals are generated.

[0015] Preferably, a flow regulating valve is arranged upstream of the water inlet straight pipe to adjust the flow of the circulating water pipe according to the magnetic field frequency.

[0016] Preferably, a water inlet straight pipe section flange and a water outlet straight pipe section flange are arranged on the outer side of the water inlet straight pipe and the water outlet straight pipe, respectively. A water inlet flange and a water outlet flange are arranged on the corresponding circulating water pipe, respectively. The axial distance between the two flanges is 500-3000 mm to facilitate the maintenance and repair of the multi-channel composite frequency conversion scale ion resonance facility.

[0017] Preferably, the water inlet straight pipe and the water outlet straight pipe are connected to the flanges by welding process. The water inlet straight pipe and the water outlet straight pipe are arranged outside the shell.

[0018] Preferably, the shell axial length is 400mm-3000mm.

[0019] Preferably, the spiral cable is fixedly installed on the surface of the shell by being spirally wound at a uniform pitch.

[0020] The utility model is applied to, but not limited to, a circulating water scale removing device of a large-scale petroleum chemical plant.

[0021] The working principle of the multi-channel composite variable-frequency scale ion resonance facility is as follows:

[0022] When the multi-channel composite variable-frequency scale ion resonance facility is working, the composite variable-frequency signal generator generates a changing composite high-frequency electromagnetic field around the shell of the multi-channel composite variable-frequency scale ion resonance facility, which interferes with the scale-forming ions (such as Ca 2+ , Mg 2+ , CO3 2- , SO4 2- , etc.) in the circulating water. 2+ , Mg 2+ , CO3 2- , SO4 2- , etc.) are not easy to gather into stable crystals under the action of the Lorentz force, the scale-forming ions resonate with the composite variable-frequency magnetic field, and the "water slag type" flocculent soft scale with very weak adhesion and very small aragonite or vaterite structure is formed, which is not easy to be adsorbed or deposited on the inner wall of the pipeline or equipment along with the water flow. x At the same time, the water molecules are converted from the associated state (H2O) x to the free state x(H2O), so that the solubility and conductivity of the circulating water are greatly enhanced.

[0023] The main components of the scale are calcium carbonate, magnesium carbonate, calcium sulfate, and magnesium sulfate, etc. x The associated state water molecules have a low solubility for calcium carbonate, and when the fluid passes through a specific high-frequency electromagnetic field at a certain flow rate, the water molecules are polarized and magnetized under the action of the variable-frequency electromagnetic field, and the dipole moment also changes. x When the frequency of the magnetic field of the multi-channel composite variable-frequency scale ion resonance facility changes, the water molecules are converted from the associated state (H2O) 2+ to the free state x(H2O), so that the solubility and conductivity of the fluid are greatly enhanced.

[0024] Under the induction of the specific composite variable-frequency electromagnetic field, the composite variable-frequency signal generator generates a resonance frequency matching Ca 2+ , and the resonance frequency matching Mg 2+Resonance frequency matched with CO3 2- Resonance frequency matched with SO4 2 Resonance frequency matched with Ca 2+ , Mg 2+ , CO3 2- , SO4 2- and other scale forming ions in water are disturbed by Lorentz force and are not easy to gather into stable crystals. The scale forming ions resonate with the composite variable frequency magnetic field to form "water slag type" flocculent soft scale with aragonite or vaterite structure that has very weak adhesion and very small particles. The soft scale flows with the water flow and is not easy to be adsorbed or deposited on the inner wall of the pipeline or equipment. At the same time, the free state water molecules have higher "activity" and are more likely to penetrate into the original scale layer, causing the scale layer to resonate, thereby loosening and falling off. The water flow in a high dissolution state can gradually dissolve the calcium carbonate and other components in the scale layer in the pipeline and carry away the original scale layer with the continuous flushing of the water flow, thereby achieving the purposes of scale prevention and scale removal.

[0025] The utility model has the following beneficial effects:

[0026] (1) The circulating water pipe is mainly composed of a water inlet straight pipe, an intermediate spiral pipe and a water outlet straight pipe. In the same magnetic field range, the circulating water flows in the magnetic field for a longer time, the circulating water pipe section covered by the variable frequency magnetic field is longer, and the magnetization efficiency is higher.

[0027] (2) The composite variable frequency signal generator can generate a composite high-frequency electromagnetic signal. By adjusting the composite high-frequency electromagnetic frequency, scale forming ions (such as Ca 2+ , Mg 2+ , CO3 2- , SO4 2- and the like) resonate at this frequency, which interferes with the scale formation of the ions in the water on the surface of the equipment, forming "water slag type" flocculent soft scale with aragonite or vaterite structure that has very weak adhesion and very small particles. The soft scale flows with the water flow and is not easy to be adsorbed or deposited on the inner wall of the pipeline. The original scale layer resonates under the composite high-frequency electromagnetic signal, thereby loosening and falling off, and flows with the water flow, achieving the effects of scale prevention and scale removal, providing conditions for subsequent improvement of the heat exchange efficiency of the heat exchanger, reduction of the maintenance and replacement cost of the heat exchange equipment and improvement of the production efficiency.

[0028] (3) The flow regulating valve is installed in the water inlet straight pipe section of the circulating water. The variable frequency magnetic field frequency can be adjusted according to the types of scale forming ions (such as Ca 2+ , Mg 2+ , CO3 2- , SO4 2- and the like), and the circulating water pipeline flow can be adjusted according to the magnetic field frequency. The method is targeted, has high scale removal rate, is scientific and efficient, and is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 Structure diagram of multi-channel composite variable frequency scale ion resonance facility;

[0030] Fig. 2 Structure diagram of multi-channel composite variable frequency scale ion resonance facility circulating water pipe;

[0031] Fig. 3 Process diagram of multi-channel composite variable frequency scale ion resonance facility.

[0032] In the figure: 1 - shell, 2 - spiral cable, 3 - water inlet straight pipe section flange, 4 - water inlet straight pipe, 5 - intermediate spiral coil, 6 - water outlet straight pipe, 7 - water outlet straight pipe section flange, 8 - flow regulating valve, 9 - composite variable frequency signal generator, 10 - power supply, 11 - water inlet flange, 12 - water outlet flange. DETAILED DESCRIPTION

[0033] The implementation of the technical scheme of the utility model will be further described below with reference to the drawings.

[0034] As shown in Figs. 1-3 The multi-channel composite variable frequency scale ion resonance facility provided by the utility model comprises a shell 1, a spiral cable 2, a water inlet straight pipe section flange 3, a water inlet straight pipe 4, an intermediate spiral coil 5, a water outlet straight pipe 6, a water outlet straight pipe section flange 7, a flow regulating valve 8, a composite variable frequency signal generator 9, a power supply 10, a water inlet flange 11 and a water outlet flange 12. The shell 1 is a cylinder, and is made of 316 austenitic stainless steel or 304 austenitic stainless steel, so as to ensure that the shell is not magnetized when the spiral cable 2 is wound on the shell 1, the spiral cable 2 is spirally wound and mounted on the surface of the shell 1, the water inlet straight pipe section flange 3, the water inlet straight pipe 4, the intermediate spiral coil 5, the water outlet straight pipe 6 and the water outlet straight pipe section flange 7 are centrally mounted in the shell, the central axis of the intermediate spiral coil 5 coincides with the central axis of the shell, and the water inlet straight pipe 4, the intermediate spiral coil 5 and the water outlet straight pipe 6 are made of magnetizable materials, the composite variable frequency signal generator 9 generates a composite electromagnetic variable frequency signal, is connected between the power supply 10 and the spiral cable, generates a composite electromagnetic variable frequency signal through an internal control chip, and periodically changes, the composite electromagnetic frequency is determined by main scale ion injected into circulating water, circulating water passes through the multi-channel composite variable frequency scale ion resonance facility, resonates under the action of the composite variable frequency signal generator, and is changed from the state of original saturated calcium and magnesium ions to the state of unsaturated calcium and magnesium ions with large fluid solubility, and then is connected to the water inlet of a heat exchanger device, so as to improve the heat exchange efficiency of the heat exchanger, reduce the maintenance and replacement cost of the heat exchange device, and improve the production efficiency.

[0035] Preferably, the water inlet straight pipe 4, the intermediate spiral coil 5, and the water outlet straight pipe 6 have diameters DN20-DN2000, and the axial distance between the flanges of the inlet and outlet pipes is 30mm-3000mm.

[0036] Preferably, the water inlet straight pipe 4, the intermediate spiral coil 5, and the water outlet straight pipe 6 can be connected to one pipe or multiple pipes, and the number of the multiple pipes is 2-20.

[0037] Preferably, the composite variable frequency signal generator 9 is connected between the power supply 10 and the spiral cable 2, and can generate a composite electromagnetic variable frequency signal according to the type and concentration of the scale-forming ions.

[0038] Preferably, a flow regulating valve 8 is arranged upstream of the water inlet straight pipe section, and the flow of the circulating water pipe is adjusted according to the frequency of the magnetic field.

[0039] Preferably, a water inlet straight pipe section flange is arranged on the outer side of the water inlet straight pipe 4, and a water outlet straight pipe section flange is arranged on the outer side of the water outlet straight pipe 6, and a water inlet flange and a water outlet flange are respectively arranged on the circulating water pipe corresponding to the water inlet straight pipe section flange and the water outlet straight pipe section flange, so as to facilitate maintenance and repair of the multi-channel composite variable frequency scale-forming ion resonance device.

[0040] Preferably, the water inlet straight pipe and the water outlet straight pipe are connected to the flanges by welding, and the water inlet straight pipe and the water outlet straight pipe are arranged outside the shell.

[0041] Preferably, the axial length of the shell is 30mm-3000mm.

[0042] Preferably, the spiral cables are uniformly and spirally wound and fixedly installed on the surface of the shell.

[0043] Preferably, the water inlet straight pipe section flange of the water inlet straight pipe is connected to the water inlet straight pipe section flange of the circulating water pipe by a bolt, and the water outlet straight pipe is connected to the water outlet straight pipe section flange by a bolt.

[0044] The circulating water passes through the water inlet pipe, and then passes through the flow regulating valve 8. After the flow regulating valve is adjusted to a flow rate matching the frequency of the magnetic field, the circulating water enters the intermediate spiral coil 5 of the circulating water pipe covered by the variable frequency magnetic field. The composite variable frequency signal generator is adjusted to ensure that scale-forming ions (such as Ca 2+ , Mg 2+ , CO3 2- , SO4 2- , etc.) in the circulating water can be removed within the frequency range of the variable frequency magnetic field. For example, when the temperature is 25℃ and the frequency of the variable frequency magnetic field is 1.2kHz, Ca 2+ is best removed from the circulating water, and when the frequency of the variable frequency magnetic field is 2kHz, Mg 2+The composite variable frequency signal generator is best adjusted to generate 1.2 kHz and 2 kHz composite variable frequency electromagnetic signals in the circulating water pipe section, and the flow regulating valve is adjusted to make the magnetic field complete at least one frequency conversion from 1.2 kHz to 2 kHz in the circulating water flowing from the water inlet to the water outlet. Compared with the traditional variable frequency electromagnetic circulating water scale removal facility, the circulating water flows in the variable frequency magnetic field for a longer time, and the composite variable frequency signal generator can generate composite variable frequency electromagnetic signals, can scientifically adjust the circulating water flow, can ensure that the multi-channel composite variable frequency scale ion resonance facility works in the best state, has higher efficiency, and has a simple circuit, improves product reliability, prolongs equipment service life, and reduces equipment maintenance and use cost.

[0045] The above is only a typical example of the present application and does not limit the present application in any form. Any skilled person in the art, without departing from the technical scheme of the present application, can make changes or modifications to the above technical content, which should be regarded as equivalent examples of equivalent changes. Any equivalent change made to the above examples according to the technical essence of the present application, without departing from the technical scheme of the present application, belongs to the scope of the technical scheme of the present application.

Claims

1. A multi-channel complex frequency-variable ion resonance facility, characterized in that: The facility includes a shell, a spiral cable, a water inlet straight pipe, an intermediate spiral coil pipe, a water outlet straight pipe, a composite variable frequency signal generator, and a power supply. The shell is a cylinder made of 316 austenitic stainless steel or 304 austenitic stainless steel to ensure that the spiral cable is wound on the shell without magnetization. The spiral cable is spirally wound and mounted on the surface of the shell. The water inlet straight pipe, the intermediate spiral coil pipe, and the water outlet straight pipe are centrally installed inside the shell. The central axis of the intermediate spiral coil pipe coincides with the central axis of the shell. The water inlet straight pipe, the intermediate spiral coil pipe, and the water outlet straight pipe are made of magnetizable materials. The composite variable frequency signal generator generates a composite electromagnetic variable frequency signal connected between the power supply and the spiral cable. The composite electromagnetic variable frequency signal is generated by an internal control chip and changes periodically. The composite electromagnetic frequency is determined by the main scaling ions injected into the circulating water.

2. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: The diameter of the water inlet straight pipe, the intermediate spiral coil pipe, and the water outlet straight pipe is DN20-DN2000.

3. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: The water inlet straight pipe, the intermediate spiral coil pipe, and the water outlet straight pipe can be supplied by one pipe or multiple branch pipes. The multiple branch pipes are 2-20 pipes.

4. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: The composite variable frequency signal generator is connected between the power supply and the spiral cable. According to the type and concentration of scaling ions, a composite electromagnetic variable frequency signal is generated.

5. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: A flow regulating valve is arranged upstream of the water inlet straight pipe to adjust the circulating water pipe flow according to the magnetic field frequency.

6. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: Water inlet straight pipe flanges and water outlet straight pipe flanges are arranged on the outside of the water inlet straight pipe and the water outlet straight pipe, respectively. Corresponding water inlet flanges and water outlet flanges are arranged on the circulating water pipes. The axial distance between the two flanges is 500-3000 mm.

7. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: The water inlet straight pipe and the water outlet straight pipe are connected to the flanges by welding. The water inlet straight pipe and the water outlet straight pipe are arranged outside the shell.

8. The multi-pass, compound, frequency-agile, ion-resonance facility of claim 1, wherein: The axial length of the shell is 400-3000 mm. The spiral cable is uniformly spirally wound and fixedly mounted on the surface of the shell.

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