A waterproof and moisture-proof marine transformer

Abstract

The present invention relates to the technical field of transformers, and specifically relates to a marine transformer with waterproof and moisture-proof functions, which includes a voltage transformation component and a moisture-proof sealing shell arranged outside the voltage transformation component. A base plate is arranged below the moisture-proof sealing shell, and supporting side plates are fixedly arranged on both sides of the base plate. A shock-absorbing component is arranged on the supporting side plates, and the supporting side plates shock-absorbingly support the moisture-proof sealing shell through the shock-absorbing component; The present invention utilizes the heaving during the ship's driving process to generate a driving force to filter the transformer oil in the transformer, remove impurities such as colloids in real time, thereby prolonging the service life of the transformer oil, being more energy-saving without power consumption, and at the same time promoting the flow of the transformer oil and increasing the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and specifically to a marine transformer with waterproof and moisture-proof functions. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage, mainly divided into dry-type transformers and oil-immersed transformers. Compared with dry-type transformers, oil-immersed transformers can withstand a greater load under the same volume and other conditions, and have better overload capacity. Therefore, in large-current places such as the power system of ships, oil-immersed transformers are usually used to ensure sufficient performance. During the use of the transformer oil in the oil-immersed transformer, gum substances, metal particles from equipment wear, etc. will gradually be generated, which can accelerate the deterioration of the oil quality, reduce the insulation performance, and increase the maintenance frequency of the transformer. Summary of the Invention

[0003] The purpose of the present invention is to provide a marine transformer with waterproof and moisture-proof functions to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A marine transformer with waterproof and moisture-proof functions, including a voltage transformation component and a moisture-proof sealing shell arranged outside the voltage transformation component. A base plate is arranged below the moisture-proof sealing shell, and supporting side plates are fixedly arranged on both sides of the base plate. A shock-absorbing component is arranged on the supporting side plates, and the supporting side plates shock-absorb and support the moisture-proof sealing shell through the shock-absorbing component.

[0005] A variable volume ring and a filtering module are fixedly arranged on the base plate. A corrugated metal cover is hermetically connected to the variable volume ring. The base plate, the variable volume ring, and the corrugated metal cover cooperate to form a sealed cavity. Through the lifting movement of the moisture-proof sealing shell relative to the base plate, the corrugated metal cover deforms, and thus the volume of the sealed cavity fluctuates.

[0006] The filtering module can filter the transformer oil. Through the volume fluctuation of the sealed cavity, the transformer oil in the moisture-proof sealing shell is driven to pass through the filtering module and then return to the inside of the moisture-proof sealing shell.

[0007] The shock-absorbing component specifically includes a damping pull rod and a supporting foot spring. Both the damping pull rod and the supporting foot spring are arranged between the moisture-proof sealing shell and the supporting side plate. The supporting foot spring elastically supports the moisture-proof sealing shell, and the damping pull rod suppresses the aftershock of the supporting foot spring through damping.

[0008] The supporting side plate is provided with a pull rod split groove, a limit side groove and a receiving sink. The receiving sink is communicated with the pull rod split groove through the limit side groove. The damping pull rod is inserted into the pull rod split groove. When the load of the transformer exceeds the set threshold, the damping pull rod can axially move relative to the pull rod split groove. When the load of the transformer is lower than the set threshold, the damping pull rod is fixed in the pull rod split groove.

[0009] Locking teeth are arranged on the surface of the damping pull rod. A locking head is arranged in the limit side groove. A telescopic controller is arranged in the receiving sink. The telescopic controller can control the telescopic movement of the locking head. When the locking head extends out, the locking head will be in limit contact with the locking teeth, so that the damping pull rod is fixed in the pull rod split groove.

[0010] A return hydraulic cylinder is embedded and installed in the supporting side plate. After the return hydraulic cylinder extends in place, it can support the moisture-proof sealing shell, so that the positions and heights of the locking teeth and the locking head correspond.

[0011] Rail clamping plates are fixedly arranged on the supporting side plate. Sliding vertical grooves are arranged on the rail clamping plates. Limit convex edges are fixedly arranged on the surface of the moisture-proof sealing shell. The limit convex edges are limitedly arranged inside the sliding vertical grooves.

[0012] A connecting middle pipe is fixedly arranged at the center position of the corrugated metal cover. The upper part of the connecting middle pipe is fixedly installed with the moisture-proof sealing shell. The moisture-proof sealing shell is communicated with the lower space area of the corrugated metal cover through the connecting middle pipe. A one-way liquid inlet valve is arranged in the connecting middle pipe. The one-way liquid inlet valve enables the liquid in the moisture-proof sealing shell to flow unidirectionally into the lower space area of the corrugated metal cover.

[0013] A cylindrical inner cavity is arranged in the filtering module. A filter element clamping ring is fixedly arranged in the cylindrical inner cavity. An oil filter element is arranged on one side of the filter element clamping ring. The transformer oil can be filtered through the oil filter element.

[0014] A filtering inlet pipe is communicated between the variable volume ring and the cylindrical inner cavity. The communication port between the filtering inlet pipe and the cylindrical inner cavity is on the side of the oil filter element away from the filter element clamping ring. A one-way liquid infusion valve is arranged on the filtering inlet pipe. The one-way liquid infusion valve enables the liquid in the variable volume ring to flow unidirectionally into the cylindrical inner cavity.

[0015] A flexible connecting pipe is communicated between the cylindrical inner cavity and the moisture-proof sealing shell. The communication port between the flexible connecting pipe and the cylindrical inner cavity is on the side of the oil filter element close to the position where the filter element clamping ring is located.

[0016] One end of the cylindrical inner cavity away from the moisture-proof sealing shell is open, and a maintenance plug is spirally sealed at the opening. A return top shaft is arranged on the maintenance plug to limit the oil filter element through the return top shaft.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The marine transformer of the present invention can utilize the heaving during the ship's voyage to generate a driving force to filter the transformer oil in the transformer, remove impurities such as colloid in real time, thereby extending the service life of the transformer oil, and being more energy-saving without power consumption. At the same time, it promotes the flow of the transformer oil, increases the heat dissipation effect, and can shock-absorb and protect the transformer through the shock-absorbing components, reducing the influence of the ship's heaving on the shaking of the transformer.

[0019] Through the mutual cooperation of structures such as the pull rod split groove, locking chuck, variable volume ring, and corrugated metal cover provided, when the transformer is under high load, it can automatically control the separation of the damping pull rod and the pull rod split groove, so that the damping pull rod no longer inhibits the redundant bouncing of the support foot spring. When the heaving force during the ship's voyage acts on the transformer, under the support of the support foot spring, it can buffer the peak impact and perform multiple bounces in the latter stage, accelerating the driving efficiency of the variable volume ring and the corrugated metal cover on the transformer oil, enabling more transformer oil to pass through the filtration module for circulation per unit time, greatly increasing the fluidity of the transformer oil, improving the heat equalization and heat dissipation capabilities, and simultaneously dynamically improving the filtration efficiency to achieve intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle.

[0022] Figure 3 It is a schematic diagram of a three-dimensional half-section of the present invention.

[0023] Figure 4 It is Figure 3 an enlarged schematic diagram of area A in

[0024] Figure 5 It is a schematic diagram of a three-dimensional half-section at the damping pull rod of the present invention.

[0025] Figure 6 It is Figure 5 an enlarged schematic diagram of area B in

[0026] Figure 7 It is a schematic diagram of the structure of the locking chuck of the present invention.

[0027] In the figure: 1. Moisture-proof and sealed housing; 2. Base plate; 3. Supporting side plate; 4. Variable capacitance ring; 5. Corrugated metal cover; 6. Filter module; 301. Damping pull rod; 302. Supporting foot spring; 303. Split slot of pull rod; 304. Limiting side slot; 305. Accommodating sunk slot; 306. Locking teeth; 307. Locking head; 308. Telescopic controller; 309. Return hydraulic cylinder; 310. Rail splint; 311. Sliding vertical slot; 312. Limiting convex rib; 501. Connecting middle pipe; 502. One-way liquid inlet valve; 601. Cylindrical inner cavity; 602. Filter element retaining ring; 603. Oil filter element; 604. Filter inlet pipe; 605. One-way liquid delivery valve; 606. Flexible connecting pipe; 607. Maintenance plug; 608. Return top shaft; 101. Silicon steel core; 102. Primary winding; 103. Secondary winding; 104. Lead joint; 105. Heat dissipation fin. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of 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.

[0029] Please refer to Figures 1 to 7 , the present invention provides a technical solution: a waterproof and moisture-proof marine transformer, including a voltage transformation component and a moisture-proof and sealed housing 1 arranged outside the voltage transformation component. As Figure 3 shown in the figure, the voltage transformation component includes a silicon steel core 101, a primary winding 102 and a secondary winding 103. The silicon steel core 101 is fixedly installed inside the moisture-proof and sealed housing 1. The primary winding 102 is sleeved on the silicon steel core 101, and the secondary winding 103 is sleeved on the primary winding 102. A lead joint 104 is fixedly arranged on the top of the moisture-proof and sealed housing 1, and the lead joint 104 is correspondingly electrically connected to the primary winding 102 and the secondary winding 103 respectively. The transformer is electrically connected to the outside through the lead joint 104, and the connecting wire adopts a flexible wire to avoid affecting the small-scale lifting movement of the transformer.

[0030] The moisture-proof and sealed housing 1 completely seals the voltage transformation component, so as to have good waterproof and moisture-proof capabilities. A base plate 2 is arranged below the moisture-proof and sealed housing 1. Supporting side plates 3 are fixedly arranged on both sides of the base plate 2. A shock-absorbing component is arranged on the supporting side plates 3, and the supporting side plates 3 shock-absorb and support the moisture-proof and sealed housing 1 through the shock-absorbing component;

[0031] A variable capacitance ring 4 and a filter module 6 are fixedly arranged on the base plate 2. A corrugated metal cover 5 is hermetically connected to the variable capacitance ring 4, and the variable capacitance ring 4 and the corrugated metal cover 5 are welded and fixed. The corrugated metal cover 5 is as Figure 4As shown in [figure], it is corrugated, and the concave-convex deformation can be carried out through the corrugated structure. The base plate 2, the variable capacitance ring 4 and the corrugated metal cover 5 cooperate to form a sealed cavity. Through the lifting movement of the moisture-proof seal shell 1 relative to the base plate 2, the corrugated metal cover 5 deforms, and then the volume of the sealed cavity fluctuates; the filtering module 6 can filter the transformer oil. Through the volume fluctuation of the sealed cavity, the transformer oil in the moisture-proof seal shell 1 is driven to pass through the filtering module 6 for filtering and then return to the inside of the moisture-proof seal shell 1.

[0032] As Figure 6 As shown in [figure], the shock-absorbing assembly specifically includes a damping pull rod 301 and a support foot spring 302. The damping pull rod 301 and the support foot spring 302 are both arranged between the moisture-proof seal shell 1 and the supporting side plate 3. The support foot spring 302 elastically supports the moisture-proof seal shell 1, and the damping pull rod 301 suppresses the aftershock of the support foot spring 302 through damping. The damping pull rod 301 is a shock absorber pull rod structure in the prior art, which will not be elaborated herein. A spring is arranged in the damping pull rod 301, which can support the damping pull rod 301 to automatically be in a fully extended state when no external force is applied, so as to facilitate the alignment during reset.

[0033] The supporting side plate 3 is provided with a pull rod split groove 303, a limit side groove 304 and a receiving sink 305. The receiving sink 305 is communicated with the pull rod split groove 303 through the limit side groove 304; the damping pull rod 301 is inserted into the pull rod split groove 303. When the transformer load exceeds the set threshold, the damping pull rod 301 can axially move relative to the pull rod split groove 303. When the transformer load is lower than the set threshold, the damping pull rod 301 is fixed in the pull rod split groove 303.

[0034] The surface of the damping pull rod 301 is provided with locking teeth 306, the limit side groove 304 is provided with a locking head 307, and the receiving sink 305 is provided with a telescopic controller 308. The telescopic controller 308 can control the telescopic movement of the locking head 307. The inside of the telescopic controller 308 is composed of structures such as a lead screw, a lead screw slider and a motor. By driving the lead screw to rotate through the motor, the lead screw slider moves along the axial direction of the lead screw, thereby driving the locking head 307 to adjust telescopically. When the locking head 307 extends, the locking head 307 will be in limit contact with the locking teeth 306, so that the damping pull rod 301 is fixed in the pull rod split groove 303.

[0035] The supporting side plate 3 is embedded with a return hydraulic cylinder 309. When the return hydraulic cylinder 309 extends to the end, it can support the moisture-proof seal shell 1 so that the positions of the locking teeth 306 and the locking head 307 are at the corresponding heights.

[0036] The supporting side plate 3 is fixedly provided with an orbital splint 310. A sliding vertical groove 311 is formed in the orbital splint 310. A limiting convex rib 312 is fixedly provided on the surface of the moisture-proof seal housing 1. The limiting convex rib 312 is arranged inside the sliding vertical groove 311 in a limiting manner.

[0037] A connecting middle pipe 501 is fixedly provided at the central position of the corrugated metal cover 5. The upper part of the connecting middle pipe 501 is fixedly installed with the moisture-proof seal housing 1. The moisture-proof seal housing 1 is communicated with the lower space area of the corrugated metal cover 5 through the connecting middle pipe 501. A one-way liquid inlet valve 502 is arranged in the connecting middle pipe 501. The one-way liquid inlet valve 502 enables the liquid in the moisture-proof seal housing 1 to flow unidirectionally into the lower space area of the corrugated metal cover 5.

[0038] A cylindrical inner cavity 601 is formed in the filtering module 6. A filter element snap ring 602 is fixedly provided in the cylindrical inner cavity 601. An oil filter element 603 is arranged on one side of the filter element snap ring 602. The transformer oil can be filtered through the oil filter element 603. A filtering inlet pipe 604 is communicated between the variable volume ring 4 and the cylindrical inner cavity 601. The communication port between the filtering inlet pipe 604 and the cylindrical inner cavity 601 is located on the side of the oil filter element 603 away from the filter element snap ring 602. A one-way liquid infusion valve 605 is arranged on the filtering inlet pipe 604. The one-way liquid infusion valve 605 enables the liquid in the variable volume ring 4 to flow unidirectionally into the cylindrical inner cavity 601.

[0039] A flexible connecting pipe 606 is communicated between the cylindrical inner cavity 601 and the moisture-proof seal housing 1. The communication port between the flexible connecting pipe 606 and the cylindrical inner cavity 601 is located on the side of the oil filter element 603 close to the position where the filter element snap ring 602 is located;

[0040] One end of the cylindrical inner cavity 601 away from the moisture-proof seal housing 1 is open, and a maintenance plug 607 is hermetically arranged at the opening in a spiral manner. A return top shaft 608 is arranged on the maintenance plug 607. The oil filter element 603 is limited through the return top shaft 608.

[0041] Heat dissipation fins 105 are fixedly provided on the surface of the moisture-proof seal housing 1. The heat dissipation contact area between the moisture-proof seal housing 1 and the air is increased through the heat dissipation fins 105.

[0042] When the transformer of the present invention is in use, it is fixedly installed with the ship through the supporting side plate 3. When the ship generates vertical heaving under the action of sea waves, as Figure 6 shown in the figure, through the cooperation of the supporting foot spring 302 and the damping pull rod 301, shock absorption and protection can be carried out on the moisture-proof seal housing 1 and the internal voltage transformation components therein. The damping pull rod 301 can be quickly compressed and slowly rebound, so as to suppress the excessive springing of the supporting foot spring 302 after being compressed.

[0043] In the above process, as Figure 4As shown in the figure, relative movement occurs between the moisture-proof seal housing 1 and the base plate 2. By driving the corrugated metal cover 5 through the connecting middle pipe 501, the corrugated metal cover 5 deforms, causing the volume in the sealed cavity formed by the cooperation of the base plate 2, the variable capacitance ring 4, and the corrugated metal cover 5 to change. When the volume in the sealed cavity increases, a negative pressure suction force is generated, and the oil in the moisture-proof seal housing 1 is sucked into the sealed cavity through the one-way liquid inlet valve 502. When the volume in the sealed cavity decreases, the positive pressure inside the sealed cavity squeezes the oil to enter the cylindrical inner cavity 601 through the one-way liquid delivery valve 605. After being filtered by the oil filter element 603, the oil finally returns to the moisture-proof seal housing 1 through the flexible connecting pipe 606, promoting the flow of the transformer oil and increasing the heat dissipation effect. The oil filter element 603 can be regularly replaced and cleaned by unscrewing the maintenance plug 607.

[0044] When the transformer is in a high-load state and the load exceeds the set threshold, the intelligent control telescopic controller 308 works, causing the telescopic controller 308 to drive the locking chuck 307 to retract and move, as Figure 6 shown in the figure. The locking teeth 306 are separated from the locking chuck 307. At this time, the damping pull rod 301 can move up and down relative to the pull rod split groove 303, and the damping pull rod 301 loses its damping restriction effect. When the transformer is further subjected to the heaving force from the ship, under the elastic support of the support foot spring 302, although the support foot spring 302 can weaken the peak impact force of the heaving, it will also generate multiple redundant bounces, causing the moisture-proof seal housing 1 and the base plate 2 to move relatively multiple times, thereby increasing the driving efficiency of the transformer oil, enabling more transformer oil to circulate through the filtration module 6 per unit time, greatly increasing the fluidity of the transformer oil, improving the heat equalization and heat dissipation capabilities, and dynamically improving the filtration efficiency. The above-mentioned heaving refers to the up-and-down translational movement of the ship in the vertical direction.

[0045] During reset, when the ship is in a relatively stable state, the control return hydraulic cylinder 309 is extended. By presetting the length of the return hydraulic cylinder 309 after it is fully extended through processing and selection, after the return hydraulic cylinder 309 is fully extended, it just supports the moisture-proof seal housing 1 in the initial state, making the locking teeth 306 and the locking chuck 307 at the same height. At this time, the telescopic controller 308 is controlled to work, causing the locking chuck 307 to lock with the locking teeth 306 again, and the damping pull rod 301 and the pull rod split groove 303 are fixed to each other. The axial length of the locking teeth 306 along the damping pull rod 301 can be larger to improve the error tolerance rate, so that in the case of a slight misalignment, the locking chuck 307 can still be limited and locked with the locking teeth 306.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and moisture-proof marine transformer, comprising a voltage transformation component and a moisture-proof and sealed housing arranged outside the voltage transformation component, characterized in that: A base plate is provided below the moisture-proof sealing shell. Support side plates are fixedly arranged on both sides of the base plate. A shock-absorbing component is arranged on the support side plates, and the support side plates support the moisture-proof sealing shell in a shock-absorbing manner through the shock-absorbing component; A variable volume ring and a filtration module are fixedly arranged on the base plate. A corrugated metal cover is hermetically connected to the variable volume ring. The base plate, the variable volume ring and the corrugated metal cover cooperate to form a sealed cavity. Through the lifting movement of the moisture-proof sealing shell relative to the base plate, the corrugated metal cover deforms, and then the volume of the sealed cavity fluctuates; The filtration module can filter the transformer oil. Through the volume fluctuation of the sealed cavity, the transformer oil in the moisture-proof sealing shell is driven to flow back into the interior of the moisture-proof sealing shell after being filtered by the filtration module; The shock-absorbing component specifically includes a damping pull rod and a support foot spring. The damping pull rod and the support foot spring are both arranged between the moisture-proof sealing shell and the support side plate. The support foot spring elastically supports the moisture-proof sealing shell, and the damping pull rod suppresses the aftershock of the support foot spring through damping; A pull rod split groove, a limit side groove and a receiving sink are formed in the support side plate, and the receiving sink is communicated with the pull rod split groove through the limit side groove; The damping pull rod is inserted into the pull rod split groove. When the transformer load exceeds the set threshold, the damping pull rod can axially move relative to the pull rod split groove. When the transformer load is lower than the set threshold, the damping pull rod is fixed in the pull rod split groove; A connecting middle pipe is fixedly arranged at the central position of the corrugated metal cover. The upper part of the connecting middle pipe is fixedly installed with the moisture-proof sealing shell. The moisture-proof sealing shell is communicated with the lower space area of the corrugated metal cover through the connecting middle pipe. A one-way inlet valve is arranged in the connecting middle pipe, and the one-way inlet valve enables the liquid in the moisture-proof sealing shell to flow unidirectionally into the lower space area of the corrugated metal cover.

2. A waterproof and moisture-proof marine transformer according to claim 1, characterized in that: Locking teeth are arranged on the surface of the damping pull rod, a locking head is arranged in the limit side groove, and a telescopic controller is arranged in the receiving sink. The telescopic controller can control the telescopic movement of the locking head. When the locking head extends out, the locking head will be in limit contact with the locking teeth, so that the damping pull rod is fixed in the pull rod split groove.

3. A waterproof and moisture-proof marine transformer according to claim 2, characterized in that: A return hydraulic cylinder is embedded and installed in the support side plate. When the return hydraulic cylinder extends to the in-place position, it can support the moisture-proof sealing shell, so that the positions of the locking teeth and the locking head are at the corresponding heights.

4. A waterproof and moisture-proof marine transformer according to claim 1, characterized in that: Rail clamping plates are fixedly arranged on the support side plates. Sliding vertical grooves are formed in the rail clamping plates. Limit convex edges are fixedly arranged on the surface of the moisture-proof sealing shell, and the limit convex edges are limited inside the sliding vertical grooves.

5. A waterproof and moisture-proof marine transformer according to claim 1, characterized in that: A cylindrical inner cavity is formed in the filtration module. A filter element clamping ring is fixedly arranged in the cylindrical inner cavity. An oil filter element is arranged on one side of the filter element clamping ring, and the transformer oil can be filtered through the oil filter element.

6. The marine transformer with waterproof and moisture-proof features according to claim 5, characterized in that: A filtration inlet pipe is communicated between the variable volume ring and the cylindrical inner cavity. The communication port between the filtration inlet pipe and the cylindrical inner cavity is on the side of the oil filter element away from the filter element clamping ring. A one-way infusion valve is arranged on the filtration inlet pipe, and the one-way infusion valve enables the liquid in the variable volume ring to flow unidirectionally into the cylindrical inner cavity.

7. A waterproof and moisture-proof marine transformer according to claim 6, characterized in that: A flexible connecting pipe is communicatively arranged between the inner cavity of the cylinder and the moisture-proof sealing shell, and the communication port between the flexible connecting pipe and the inner cavity of the cylinder is located on the side of the oil filter element close to the filter element snap ring. One end of the inner cavity of the cylinder away from the moisture-proof sealing shell is open, and a maintenance plug is spirally sealed at the opening. A return top shaft is arranged on the maintenance plug to limit the oil filter element through the return top shaft.

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