Electromagnetic device for underwater pump body

Abstract

The utility model belongs to the technical field of bittern crystallization suppression, and relates to an electromagnetic device for an underwater pump body, which comprises a waterproof electromagnetic coil and an electromagnetic plate, the waterproof electromagnetic coil is used for acting on the pump body and / or fluid in the pump body through electromagnetic induction, and the electromagnetic plate is used for converting external current into high-frequency current and conveying the high-frequency current to the waterproof electromagnetic coil; the waterproof electromagnetic coil is wound on the outer circumference of the pump body, and the electromagnetic plate is detachably connected to the pump body; the electromagnetic plate is sleeved with an electromagnetic plate protection cavity, and the electromagnetic plate protection cavity seals the electromagnetic plate in a waterproof mode. The electromagnetic plate is directly integrated in the underwater environment in the cavity of the water pump, the metal material of the pump head is used as an electromagnetic induction carrier, the magnetic field path is shortened to the millimeter level, energy loss of a traditional external magnetic field device is avoided, and the device has wide application prospects in the field of crystal elimination of the underwater pump body.

Description

Technical Field

[0001] The utility model belongs to the technical field of brine crystallization inhibition and relates to an electromagnetic device for an underwater pump body. Background Art

[0002] Brine pump is a pump specially used for extracting, conveying or circulating liquids with high salt concentration (i.e. salt water or brine). Brine pumps are widely used in seawater desalination, salt making industry, chemical production, food processing and other industries, responsible for transporting liquids with high salt content. Brine pump crystallization refers to the solid crystal deposits formed inside or around the pump body during the operation of the brine pump. These crystals are mainly formed by the precipitation of salts dissolved in brine (such as sodium chloride, calcium sulfate, etc.). Brine crystals will adhere to pipelines and equipment, seriously affecting the normal operation and production efficiency of the equipment. The accumulation of crystals will cause pipeline blockage, increase maintenance costs, reduce production efficiency, and may even cause equipment damage. Electromagnetic induction is a more efficient way to eliminate brine crystals in brine pumps or pipelines.

[0003] However, the existing electromagnetic induction method for eliminating brine crystallization in brine pumps or pipelines usually sets a control box or control cabinet on the ground, sets the electromagnetic board in the control box or control cabinet, sets the electromagnetic induction coil at the brine pump or pipeline, and connects the electromagnetic board and the electromagnetic induction coil through a cable. Since the high-frequency alternating current emitted by the electromagnetic board flows in the connecting cable, a large amount of heat and power loss will be generated, especially in deep wells with long cables or in long pipelines, the heating and loss of the connecting cable are particularly obvious.

[0004] Therefore, a method or device is needed to solve the above technical problems by reducing the heat generation and power loss of high-frequency alternating current in the connecting cable during the brine pump crystallization process. Utility Model Content

[0005] The technical solution adopted by the utility model to solve the technical problem is: an electromagnetic device for an underwater pump body, comprising: a waterproof electromagnetic coil and an electromagnetic plate, wherein the waterproof electromagnetic coil is used for electromagnetic induction to act on the pump body and / or the fluid in the pump body, and the electromagnetic plate is used for converting external current into high-frequency current and transmitting it to the waterproof electromagnetic coil;

[0006] The waterproof electromagnetic coil is wound around the outer circumference of the pump body, and the electromagnetic plate is detachably connected to the pump body;

[0007] The electromagnetic board outer shell is provided with an electromagnetic board protection cavity, and the electromagnetic board protection cavity waterproofly seals the electromagnetic board inside.

[0008] Preferably, an insulating fixing bracket is sleeved on the pump body, the waterproof electromagnetic coil is wound on the outer layer of the insulating fixing bracket, and the outer layer of the waterproof electromagnetic coil is provided with a coil shielding protection layer.

[0009] Preferably, the electromagnetic plate is thermally connected to the heat-conducting surface of the passive heat dissipation device, and the heat dissipation surface of the passive heat dissipation device is thermally connected to the electromagnetic plate protection cavity and / or extends outside the electromagnetic plate protection cavity.

[0010] More preferably, sealant is filled around the electromagnetic plate.

[0011] Preferably, an electromagnetic coil power supply cable is provided between the electromagnetic plate and the waterproof electromagnetic coil. The electromagnetic coil power supply cable uses a high-frequency cable, and a cable shielding outer shell is sleeved outside the electromagnetic coil power supply cable. The cable shielding outer shell is detachably connected to the pump body.

[0012] Preferably, the electromagnetic plate is connected with an electromagnetic plate power supply cable and an electromagnetic plate communication cable.

[0013] More preferably, the electromagnetic plate power supply cable is connected to a DC power supply at a distance.

[0014] More preferably, the electromagnetic plate communication cable is connected with a wireless communicator.

[0015] Preferably, the outer shell of the pump body is in the shape of a stepped shaft, and the waterproof electromagnetic coil is spirally wound around the pump head of the pump body.

[0016] More preferably, the pump head of the pump body is made of a metal material.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. By directly integrating the electromagnetic plate into the underwater environment inside the water pump cavity and using the metal material of the pump head as the electromagnetic induction carrier, the present utility model shortens the magnetic field path to the millimeter level, avoiding the energy loss of traditional external magnetic field devices. For the electromagnetic induction device used in the underwater pump body of the present utility model, the strong alternating magnetic field will increase the ion mobility in the brine liquid and inhibit the crystallization process of the ions in the brine liquid.

[0019] 2. By integrating the electromagnetic plate into the water pump cavity, the present utility model reduces the space occupation of the connection and installation pipelines of traditional external electromagnetic devices, making the external cables of the electromagnetic induction water pump fewer and the installation simpler and more convenient.

[0020] 3. By integrating the electromagnetic plate and the water pump cavity in an integrated design and integrating the controller into the control panel, the present utility model simplifies the installation and maintenance processes of the water pump, solves the environmental adaptability and energy consumption problems of traditional electromagnetic technologies in the water pump system, and broadens the application fields of electromagnetic induction water pumps. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of an electromagnetic device for an underwater pump body of the present utility model;

[0022] Figure 2Yes Figure 1 Explosion decomposition schematic diagram

[0023] Among them, 1. Waterproof electromagnetic coil; 2. Insulating fixing bracket; 3. Coil shielding protective layer; 4. Cavity joint; 5. Cable shielding housing; 6. Electromagnetic plate power supply cable; 7. Electromagnetic plate communication cable; 8. Electromagnetic coil power supply cable; 9. Sealant; 10. Electromagnetic plate; 11. Passive heat dissipation device; 12. Electromagnetic plate protection cavity; 13. Pump body Specific implementation mode

[0024] Next, the relevant technologies in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0025] Reference Figures 1-2 , an electromagnetic device for an underwater pump body, including: a waterproof electromagnetic coil 1 and an electromagnetic plate 10. The waterproof electromagnetic coil 1 is used for electromagnetic induction to act on the pump body 13 and / or the fluid in the pump body 13, and the electromagnetic plate 10 is used to convert external current into high-frequency current and transmit it to the waterproof electromagnetic coil 1; an electromagnetic induction device for use in an underwater pump body. A strong alternating magnetic field will increase the ion mobility in the brine liquid and inhibit the crystallization process of ions in the brine liquid; in a strong alternating magnetic field, the ions and molecules in the brine mineral water exhibit the characteristic of increased ion behavior mobility; a strong alternating magnetic field will increase the ion mobility in the brine mineral water; the reason is that the magnetic field generates a Lorentz force on the charged ions, prompting the ions to accelerate in the solution; the salt crystallization process is changed due to the strong alternating magnetic field, so the alternating magnetic field can affect the crystallization process of ions; the alternating magnetic field can also change the solubility of poorly soluble electrolytes. The magnetic field strength and magnetic action time will affect the polarity of the ions, thereby increasing the solubility of the poorly soluble electrolytes

[0026] The waterproof electromagnetic coil 1 is wound around the outer circumference of the pump body 13, and the electromagnetic plate 10 is detachably connected to the pump body 13; the electromagnetic plate 10 can be arranged inside or outside the pump body 13 according to the structure and actual needs; both the electromagnetic plate 10 and the waterproof electromagnetic coil 1 are arranged on the pump body 13, so that the high-frequency current path from the electromagnetic plate 10 to the waterproof electromagnetic coil 1 is converted from the original long distance from the ground control box, control center or control computer room to the pump body 13 to a short distance within the length range of the pump body, effectively reducing the length of the high-frequency current path, reducing the length of the high-frequency cable, saving costs, and reducing the heat generation and power loss of the high-frequency current, improving the efficiency of electromagnetic induction

[0027] An electromagnetic plate 10 is provided with an electromagnetic plate protection cavity 12, and the electromagnetic plate protection cavity 12 waterproofs and seals the electromagnetic plate 10 inside; the electromagnetic plate protection cavity 12 is flange-connected to the pump body 13, and the connection seal is a double seal. The first layer is a fluororubber O-ring, and the second layer is pressed by a metal buckle to ensure the waterproof and sealing effect between the electromagnetic plate protection cavity 12 and the pump body 13; the electromagnetic plate protection cavity 12 is installed on the top of the motor cavity of the pump body 13, which facilitates the quick repair, maintenance and replacement of the electromagnetic plate protection cavity 12.

[0028] Further, an insulating fixing bracket 2 is sleeved on the pump body 13, a waterproof electromagnetic coil 1 is wound around the outer layer of the insulating fixing bracket 2, and a coil shielding protection layer 3 is arranged on the outer layer of the waterproof electromagnetic coil 1; the insulating fixing bracket 2 is evenly erected and fixed around the pump head of the pump body 13, the waterproof electromagnetic coil 1 is tightly wound on the insulating fixing bracket 2, and the outer circle of the waterproof electromagnetic coil 1 can be wound and positioned with a high-temperature insulating tape; the coil shielding protection layer 3 is sleeved outside the high-temperature insulating tape.

[0029] Further, the electromagnetic plate 10 is thermally connected to the heat-conducting surface of the passive heat dissipation device 11, and the heat dissipation surface of the passive heat dissipation device 11 is thermally connected to the electromagnetic plate protection cavity 12 and / or extends outside the electromagnetic plate protection cavity 12; the passive heat dissipation device 11 is used to timely conduct and dissipate the heat generated by the electromagnetic plate 10 during operation, ensuring the working environment temperature of the electromagnetic plate 10. The passive heat dissipation device 11 can adopt a metal radiator, such as an aluminum heat sink or heat fins.

[0030] Furthermore, a sealant 9 is filled around the electromagnetic plate 10; the sealant 9 is used to protect the electromagnetic plate 10 and the cable joints or interfaces from water seepage or moisture, or the gap between the electromagnetic plate protection cavity 12 and the electromagnetic plate 10 is filled with the sealant 9. The electromagnetic plate protection cavity 12 has a waterproof rating of IP68 or above and is resistant to water flow impact.

[0031] Further, an electromagnetic coil power supply cable 8 is arranged between the electromagnetic plate 10 and the waterproof electromagnetic coil 1. The electromagnetic coil power supply cable 8 adopts a high-frequency cable, and a cable shielding outer shell 5 is sleeved outside the electromagnetic coil power supply cable 8. The cable shielding outer shell 5 is detachably connected to the pump body 13; the waterproof electromagnetic coil 1 is electrically connected to the electromagnetic plate 10 in the electromagnetic plate protection cavity 12 through the electromagnetic coil power supply cable 8; a cavity cable joint is arranged on the electromagnetic plate protection cavity 12 to electrically connect the inside and outside. The cavity cable joint is internally provided with a silica gel sealing ring and a metal locking ring, so that while the waterproof electromagnetic coil 1 is connected to the electromagnetic plate 10 through the cavity cable joint, it is ensured to be sealed and waterproof.

[0032] Further, the electromagnetic plate 10 is connected to an electromagnetic plate power supply cable 6 and an electromagnetic plate communication cable 7; the electromagnetic plate power supply cable 6 is used to connect to an external power supply, such as a mains distribution box or a transformer box, and the electromagnetic plate communication cable 7 is used to communicatively connect to an external communication interface or a communication relay.

[0033] Furthermore, the electromagnetic plate power supply cable 6 is connected to a DC power supply at the far end; DC-to-high-frequency AC conversion has the following advantages compared to AC mains-to-high-frequency AC conversion: First, DC input does not require a rectification link and can directly enter the inversion stage, reducing device losses (such as rectifier bridge voltage drop and harmonic losses); Second, the DC power supply voltage is stable, and the operating point of the switching tube is easier to optimize, reducing conduction / turn-off losses at low switching frequencies; Third, a high-frequency transformer with a fixed frequency can be designed for DC input, reducing leakage inductance and eddy current losses and improving the utilization rate of the magnetic core; Therefore, a DC power supply can be connected to the electromagnetic plate 10 from the ground control box through the electromagnetic plate power supply cable 6, making the structure of the electromagnetic plate 10 more optimized, with less loss and higher electromagnetic induction efficiency. Its disadvantage is that higher requirements are placed on the ground control box, and an AC-to-DC conversion device needs to be added at the ground control box.

[0034] Furthermore, the electromagnetic plate communication cable 7 is connected to a wireless communicator.

[0035] Further, the outer shell of the pump body 13 is in the shape of a stepped shaft, and the waterproof electromagnetic coil 1 is spirally wound around the pump head of the pump body 13.

[0036] Furthermore, the pump head of the pump body 13 is made of a metal material; the electromagnetic plate 10 is integrated on the pump body 13, and the metal material of the pump head of the pump body 13 is used as an electromagnetic induction carrier, shortening the magnetic field path to the millimeter level and avoiding energy loss of the magnetic field device.

[0037] Embodiment

[0038] For the electromagnetic induction device used in the underwater pump body of this embodiment, the strong alternating magnetic field will increase the ion mobility in the brine liquid and inhibit the crystallization process of the ions in the brine liquid. The pump body 13 of this embodiment has a stepped shaft-shaped outer shell, and the waterproof electromagnetic coil 1 is sleeved on the stepped shaft-shaped outer shell of the pump body 13. The electromagnetic device is in direct contact with the pump body 13, reducing energy loss. The waterproof electromagnetic coil 1 can be set at the impeller or the pump head according to specific requirements, preferably radiating the magnetic field to the parts of the pump body 13 where crystallization is likely to occur. The control part (including: electromagnetic plate 10, passive heat dissipation device 11, electromagnetic plate protection cavity 12, etc.) and the electromagnetic induction part (including: waterproof electromagnetic coil 1, insulating fixing bracket 2, coil shielding protection layer 3, etc.) are respectively processed and installed modularly, and a special high-frequency cable is used to connect between the control part and the electromagnetic induction part. This embodiment achieves reasonable modularization and compactness without changing the original pump type of the pump body 13, which is beneficial for pre-installation debugging and post-maintenance.

[0039] The waterproof electromagnetic coil 1 is closely, evenly, and regularly spirally wound around the insulating fixed bracket 2, and the insulating fixed bracket 2 is evenly arranged around the pump head of the pump body 13. A coil shielding protective layer 3 is provided outside the waterproof electromagnetic coil 1 and the insulating fixed bracket 2 to facilitate the distribution of as many magnetic force lines as possible radially inward, thereby improving the conversion efficiency of electromagnetic energy into thermal energy. The wiring terminal of the waterproof electromagnetic coil 1 is connected to a cavity connector 4, and the external connection end of the cavity connector 4 extends out of the coil shielding protective layer 3 for docking with a high-frequency cable.

[0040] The electromagnetic coil power supply cable 8 is a dedicated high-frequency cable. The electromagnetic coil power supply cable 8 penetrates through the cable shielding outer shell 5, and the cable shielding outer shell 5 plays a role in shielding and waterproofing to protect the electromagnetic coil power supply cable 8. One end of the electromagnetic coil power supply cable 8 is connected to the electromagnetic plate 10, and the other end of the electromagnetic coil power supply cable 8 is connected to the cavity connector 4 of the coil shielding protective layer 3, finally conducting the waterproof electromagnetic coil 1 and the electromagnetic plate 10.

[0041] The proximal ends of the electromagnetic plate power supply cable 6 and the electromagnetic plate communication cable 7 are respectively connected to the electromagnetic plate 10, and the distal ends of the electromagnetic plate power supply cable 6 and the electromagnetic plate communication cable 7 are connected to an external power supply and a communication port for external power supply and communication. The external power supply and the communication port can be set on the ground, control center, or control machine room far away from the pump body 13. The external power supply provides commercial power or direct current to the pump body 13. The electromagnetic plate power supply cable 6 accesses the input current to the electromagnetic plate 10, and then the electromagnetic plate 10 converts the input current into a high-frequency current specifically for the electromagnetic induction of the electromagnetic coil 1 and transmits it to the electromagnetic coil 1 through the electromagnetic coil power supply cable 8. Therefore, the transmission path and distance of the high-frequency current are limited to the distance from the electromagnetic plate 10 to the electromagnetic coil 1 and will not exceed the length of the pump body 13, avoiding the process of the previous long-distance transmission of high-frequency current from the distal end or the ground to the pump body 13 in the well or pipeline. Therefore, the heat generation and power loss of the high-frequency current in this section of the length are reduced. And since the input current cable does not require an additional shielding protective layer, the wiring installation from the distal end to the pump body 13 is simpler and more convenient than the previous high-frequency cable.

[0042] A wireless communicator can also be set on the pump body 13 to perform remote wireless communication with the ground power control cabinet, control center, or control machine room. The electromagnetic plate communication cable 7 is connected to the wireless communicator. The wireless communicator converts the control signal from a wired signal into a wireless signal and transmits it, and after receiving the wireless signal sent from the distal end, it converts it into a wired signal and then transports it back to the electromagnetic plate communication cable 7 and finally transmits the control information to the electromagnetic plate 10. Therefore, the control communication method of the pump body 13 is changed from wired communication to wireless communication, making the wiring installation of the pump body 13 simpler and more convenient, and the selection of the installation position of the pump body 13 more diverse.

[0043] A passive heat dissipation device 11 is provided at the bottom of the electromagnetic plate 10, such that the heat conduction surface of the passive heat dissipation device 11 is closely attached to the electromagnetic plate 10, and the heat dissipation surface or the scattering fins of the passive heat dissipation device 11 are closely attached and thermally connected to the inner wall of the electromagnetic plate protection cavity 12, so that the heat generated when the electromagnetic plate 10 is working can be conducted and dissipated in time, ensuring that the electromagnetic plate 10 can perform high-frequency current conversion in a good working temperature environment.

[0044] The electromagnetic plate protection cavity 12 is filled with a sealant 9 to protect the electromagnetic plate 10 and the cable joints or interfaces from water seepage or moisture. The electromagnetic plate protection cavity 12 has a waterproof rating of IP68 or above and is resistant to water flow impact.

[0045] During operation, after the electromagnetic induction device used in the underwater pump body obtains a startup instruction through the electromagnetic communication cable 7, the electromagnetic plate 10 starts to work, and the working temperature is maintained through the passive heat dissipation device 11 to ensure stable operation of the device. The waterproof electromagnetic coil 1 obtains high-frequency current power supply through the electromagnetic power supply cable 8 in the cable shielding housing 5 to drive the electromagnetic induction pump body 13, thereby reducing the heat generation and power loss of the high-frequency current.

[0046] In summary, the present utility model directly integrates the electromagnetic plate into the underwater environment inside the pump cavity, uses the metal material of the pump head as the electromagnetic induction carrier, shortens the magnetic field path to the millimeter level, and avoids the energy loss of the traditional external magnetic field device. Therefore, the present utility model has a wide application prospect in the field of eliminating crystallization in underwater pump bodies.

[0047] It should be emphasized that the above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An electromagnetic device for an underwater pump body, characterized in that, Comprising: A waterproof electromagnetic coil (1) and an electromagnetic plate (10), where the waterproof electromagnetic coil (1) is used for electromagnetic induction acting on the pump body (13) and / or the fluid within the pump body (13), and the electromagnetic plate (10) is used for converting external current into high-frequency current and delivering it to the waterproof electromagnetic coil (1); The waterproof electromagnetic coil (1) is wound around the outer circumference of the pump body (13), and the electromagnetic plate (10) is detachably connected to the pump body (13); An electromagnetic plate protection cavity (12) is sleeved outside the electromagnetic plate (10), and the electromagnetic plate protection cavity (12) waterproof-seals the electromagnetic plate (10) inside.

2. The electromagnetic device for an underwater pump body according to claim 1, characterized in that, An insulating fixing bracket (2) is sleeved on the pump body (13), the waterproof electromagnetic coil (1) is wound on the outer layer of the insulating fixing bracket (2), and a coil shielding protection layer (3) is provided on the outer layer of the waterproof electromagnetic coil (1).

3. An electromagnetic device for an underwater pump body according to claim 1, characterized in that, The electromagnetic plate (10) is thermally connected to the heat-conducting surface of a passive heat dissipation device (11), and the heat dissipation surface of the passive heat dissipation device (11) is thermally connected to the electromagnetic plate protection cavity (12) and / or extends outside the electromagnetic plate protection cavity (12).

4. An electromagnetic device for an underwater pump body according to claim 3, characterized in that, Sealing glue (9) is filled around the electromagnetic plate (10).

5. An electromagnetic device for an underwater pump body according to claim 1, characterized in that, An electromagnetic coil power supply cable (8) is provided between the electromagnetic plate (10) and the waterproof electromagnetic coil (1), the electromagnetic coil power supply cable (8) uses a high-frequency cable, and a cable shielding outer shell (5) is sleeved outside the electromagnetic coil power supply cable (8), and the cable shielding outer shell (5) is detachably connected to the pump body (13).

6. An electromagnetic device for an underwater pump body according to claim 1, characterized in that, The electromagnetic plate (10) is connected with an electromagnetic plate power supply cable (6) and an electromagnetic plate communication cable (7).

7. An electromagnetic device for an underwater pump body according to claim 6, characterized in that, The electromagnetic plate power supply cable (6) is connected to a DC power supply at a distance.

8. An electromagnetic device for an underwater pump body according to claim 6, characterized in that, The electromagnetic plate communication cable (7) is connected with a wireless communicator.

9. An electromagnetic device for an underwater pump body according to claim 1, characterized in that, The outer shell of the pump body (13) is in the shape of a stepped shaft, and the waterproof electromagnetic coil (1) is spirally wound at the pump head of the pump body (13).

10. An electromagnetic device for an underwater pump body according to claim 9, characterized in that, The pump head of the pump body (13) is made of a metal material.

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