Safety protection device for power transformer

Abstract

The utility model relates to a safety protection device for a power transformer, which belongs to the technical field of electric appliance safety protection and is characterized in that a cabinet body is movably arranged in a protective shed and is formed by fixing a left side plate and a right side plate which are vertically arranged above a supporting bottom plate; opening and pulling door plates are fixedly arranged on the front faces and the rear faces of the left side plate and the right side plate through four sets of left and right hinges, operation of personnel is facilitated through bidirectional use, side lifting rings which are symmetrical left and right are arranged on the left side plate and the right side plate, moving wheels are arranged at the bottom of the supporting bottom plate, and daily electric forklift moving or crane moving is facilitated. Ventilation holes are formed in the left side plate and the right side plate and used for normal air exhaust and heat dissipation of electric appliances; the protective shed is composed of a fence and a shed top cover, the fence is of a quadrilateral frame structure formed by welding square steel pipes, the shed top cover is welded to the top, and the front face is provided with a sliding door through a hinge on the left side. Due to the dual protection of the cabinet body and the protective shed, the cabinet can be used outdoors and indoors, and is safe and reliable.

Description

Technical Field

[0001] The utility model relates to a safety protection device for a power transformer, belonging to the technical field of electrical safety protection. Background Art

[0002] A power transformer is a static electrical device that is used to convert an AC voltage of a certain value into another or several different voltages of the same frequency. A static device with two or more windings, in order to transmit electrical energy, converts the AC voltage and current of one system into the voltage and current of another system by electromagnetic induction at the same frequency. Usually, the values ​​of these currents and voltages are different. Transformers can be divided into power transformers, test transformers, instrument transformers and special-purpose transformers according to their uses: power transformers are necessary equipment for power transmission and distribution, and power distribution to power users; test transformers are equipment for withstand voltage tests on electrical equipment; instrument transformers are used for electrical measurement and relay protection of distribution systems; special-purpose transformers include smelting furnace transformers, welding transformers, electrolysis rectifier transformers, small voltage regulating transformers, etc.

[0003] A power transformer is a static electrical device that is used to convert an AC voltage of a certain value into another or several different voltages of the same frequency. When AC is passed through the primary winding, an alternating magnetic flux is generated. The alternating magnetic flux induces an AC electromotive force in the secondary winding through the magnetic conduction of the iron core. The magnitude of the secondary induced electromotive force is related to the number of turns of the primary and secondary windings, that is, the voltage is proportional to the number of turns. The main function is to transmit electric energy, so the rated capacity is its main parameter. The rated capacity is a conventional value that represents power. It characterizes the size of the transmitted electric energy and is expressed in kVA or MVA. When the rated voltage is applied to the transformer, the rated current that does not exceed the temperature rise limit under specified conditions is determined based on it. The more energy-saving power transformer is the amorphous alloy core distribution transformer, whose biggest advantage is that the no-load loss value is extremely low. Whether the no-load loss value can be guaranteed in the end is the core issue to be considered in the entire design process. When arranging the product structure, in addition to considering that the amorphous alloy core itself is not affected by external forces, the characteristic parameters of the amorphous alloy must also be accurately and reasonably selected during calculation.

[0004] The Chinese utility model patent discloses a safety protection device for outdoor power transformers, with the authorization announcement number CN211980355U. The structure is described as including a device base, a filter screen, a toothed bar and a single gear. The device bases are nested with connecting guide rods, and a hinged base is welded and fixed directly above the device base. A device back plate is arranged directly above the hinged base, and a shielding box door is hinged and fixed on the outside of the device back plate. The filter screen is connected through the shielding box door. A transverse bracket is arranged directly above the device back plate, and the outer bearing of the transverse bracket is connected to an internal threaded pipe, and the outer thread of the internal threaded pipe is connected to a threaded rod, and the outer bearing of the threaded rod is connected to a pressure block, and a shielding roof is fitted and connected directly above the pressure block. The safety protection device for outdoor power transformers adopts positioning columns and shear rods, and the transverse bracket is clamped and fixed by the positioning rod, which improves the flexibility of daily assembly and adjustment of the transverse bracket.

[0005] The disadvantage of this patent is that the design of the shielding roof is unreasonable, and the triangular structure has openings on two sides. If it is set outdoors, it will easily allow rain or snow water to enter, which is not conducive to protecting the internal electrical components such as the transformer; if it is set indoors, it will arouse people's curiosity, which is not conducive to protecting the daily safety of personnel, and it is inconvenient to move the position; in view of the existing technical problems, it is urgently necessary to design a transformer safety protection device that can be used both outdoors and indoors. This is a technical problem that needs to be solved urgently. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the purpose of the utility model is to provide a safety protection device for a power transformer. The cabinet body is movably arranged inside the protection shed and can be made according to the specific size of the transformer to be used without being restricted by the size. The surface is sprayed with anti-rust paint. The front and back of the left and right panels are fixed with sliding door panels through four groups of left and right hinges. The left and right panels are provided with symmetrical side hanging rings through threads at the center positions of the upper ends. The supporting bottom plate is provided with moving wheels, which are convenient for daily moving with an electric forklift or shifting with a crane. Two rows of ventilation holes that penetrate the interior are opened on the left and right panels for normal electrical exhaust and heat dissipation. The protection shed is composed of a fence and a shed roof cover. The fence is welded into a quadrilateral frame structure with square steel pipes, a shed roof cover is welded on the top, and a sliding door is provided on the front through the left hinge. The double protection of the cabinet body and the protection shed can be placed outdoors or indoors for use. It is safe and reliable and will not be affected by rain and snow, while also protecting the daily safety of personnel.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions

[0008] A safety protection device for a power transformer, characterized in that it includes a cabinet body and a protection shed, the cabinet body is movably arranged inside the protection shed, the cabinet body is fixed by a left side plate 5 and a right side plate 10 vertically arranged above a supporting bottom plate 8, an upper top cover 1 is fixed on the top of both, and a sliding door plate 9 is fixed on the front and back of the left side plate 5 and the right side plate 10 through four groups of left and right hinges, the upper end of the left side plate 5 is provided with an upper cable hole 3 passing through the interior, the lower end of the left side plate 5 is provided with two groups of lower cable holes 6 passing through the interior, and the lower end of the right side plate 10 is provided with two groups of lower cable holes 6 passing through the interior; the protection shed is composed of a fence 12 and a shed roof cover 11, the fence 12 is welded into a quadrilateral frame structure with square steel pipes, the top is welded with a shed roof cover 11, and the front is provided with a sliding door 13 through the left hinge.

[0009] The top surface and bottom surface of the upper cover 1 form an angle of 170 degrees.

[0010] The left side plate 5 and the right side plate 10 are provided with left-right symmetrical side hanging rings 2 at the center positions of the upper ends thereof through threads.

[0011] The left side plate 5 and the right side plate 10 are provided with two rows of ventilation holes 4 penetrating the interior.

[0012] Four sets of symmetrical moving wheels 7 are fixedly provided at the bottom of the supporting base plate 8 .

[0013] A support plate fixed to the ground is welded to the bottom of the fence 12.

[0014] The beneficial effects of the utility model are:

[0015] The cabinet is movably arranged inside the protective shed, and the cabinet is fixed by a left side plate 5 and a right side plate 10 vertically arranged above the supporting bottom plate 8, and an upper cover 1 is fixed on the top of the two. The supporting bottom plate 8, the left side plate 5 and the right side plate 10 can be made according to the specific size of the transformer used, without being restricted by the size. The supporting bottom plate 8 is made of double-layer steel plate and I-beam welding, and the surface is sprayed with anti-rust paint. The front and back of the left side plate 5 and the right side plate 10 are fixed with a sliding door panel 9 through four groups of left and right folding pages, and the two-way use is convenient for personnel to operate. An upper cable hole 3 that passes through the interior is provided at the upper end of the left side plate 5, two groups of lower cable holes 6 that pass through the interior are opened at the lower end of the left side plate 5, and two groups of lower cable holes 6 that pass through the interior are provided at the lower end of the right side plate 10. Left and right symmetrical side hanging rings 2 are provided at the center positions of the upper ends of the left side plate 5 and the right side plate 10 through threads, and four groups of symmetrical moving wheels 7 are fixedly provided at the bottom of the supporting base plate 8, which is convenient for daily moving with an electric forklift or shifting with a crane. Two rows of ventilation holes 4 that pass through the interior are opened on the left side plate 5 and the right side plate 10 for normal electrical exhaust and heat dissipation.

[0016] The protective shed is composed of a fence 12 and a roof cover 11. The fence 12 is welded with square steel pipes into a quadrilateral frame structure, the roof cover 11 is welded on the top, and a sliding door 13 is provided on the front through a hinge on the left side.

[0017] The double protection of the cabinet and the protective shed means that it can be used outdoors as well as indoors. It is safe and reliable and will not be affected by rain or snow, while also protecting the daily safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the utility model.

[0019] Figure 2 It is the right view of the utility model.

[0020] Figure 3 The three-dimensional Figure 1 .

[0021] Figure 4 The three-dimensional Figure 2 .

[0022] Figure 5 It is an internal stereogram of the utility model.

[0023] Figure 6 This is a three-dimensional diagram of a protective shed arranged outside the utility model.

[0024] In the figure: upper roof 1, side lifting ring 2, upper cable hole 3, ventilation hole 4, left side plate 5, lower cable hole 6, moving wheel 7, supporting bottom plate 8, sliding door plate 9, right side plate 10, shed roof cover 11, fence 12, sliding door 13. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] As attached Figure 1-6As shown, a safety protection device for a power transformer includes a cabinet and a protection shed, wherein the cabinet is movably arranged inside the protection shed, and the cabinet is fixed by a left side plate 5 and a right side plate 10 vertically arranged above a supporting bottom plate 8, and an upper top cover 1 is fixed on the top of both, and a sliding door plate 9 is fixed on the front and back of the left side plate 5 and the right side plate 10 through four groups of left and right hinges, wherein the upper end of the left side plate 5 is provided with an upper cable hole 3 passing through the interior, the lower end of the left side plate 5 is provided with two groups of lower cable holes 6 passing through the interior, and the lower end of the right side plate 10 is provided with two groups of lower cable holes 6 passing through the interior; the protection shed is composed of a fence 12 and a shed roof cover 11, the fence 12 is welded into a quadrilateral frame structure with square steel pipes, the top is welded with the shed roof cover 11, and the front is provided with a sliding door 13 through the left hinge.

[0027] The top surface and bottom surface of the upper cover 1 form an angle of 170 degrees.

[0028] The left side plate 5 and the right side plate 10 are provided with symmetrical side hanging rings 2 at the center positions of the upper ends thereof through threads, and the left side plate 5 and the right side plate 10 are provided with two rows of ventilation holes 4 penetrating the interior.

[0029] Four sets of symmetrical moving wheels 7 are fixedly provided at the bottom of the supporting base plate 8 .

[0030] A support plate fixed to the ground is welded to the bottom of the fence 12.

[0031] How to use the safety protection device for power transformer:

[0032] The support bottom plate 8, the left side plate 5 and the right side plate 10 can be made according to the specific size of the transformer used, without being restricted by the size. The support bottom plate 8 is made of double-layer steel plate and I-beam welding, and the surface is sprayed with anti-rust paint. The front and back of the left side plate 5 and the right side plate 10 are fixed with sliding door panels 9 through four groups of left and right folding pages, and the two-way use is convenient for personnel to operate. The upper end of the left side plate 5 is provided with an upper cable hole 3 that passes through the interior, the lower end of the left side plate 5 is provided with two groups of lower cable holes 6 that pass through the interior, and the lower end of the right side plate 10 is provided with two groups of lower cable holes 6 that pass through the interior. The left side plate 5 and the right side plate 10 are provided with left and right symmetrical side lifting rings 2 at the center position of the upper end through threads, which is convenient for daily moving with an electric forklift or shifting with a crane. The left side plate 5 and the right side plate 10 are provided with two rows of ventilation holes 4 that pass through the interior for normal electrical exhaust and heat dissipation.

[0033] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A safety protection device for a power transformer, characterized in that: The invention comprises a cabinet body and a protective shed, wherein the cabinet body is movably arranged inside the protective shed, and the cabinet body is fixedly formed by a left side plate (5) and a right side plate (10) vertically arranged above a supporting bottom plate (8), and an upper cover (1) is fixedly arranged on the top of both sides, and a sliding door plate (9) is fixedly arranged on the front and back of the left side plate (5) and the right side plate (10) through four groups of left and right hinges, wherein the upper end of the left side plate (5) is provided with an upper cable hole (3) penetrating the interior, the lower end of the left side plate (5) is provided with two groups of lower cable holes (6) penetrating the interior, and the lower end of the right side plate (10) is provided with two groups of lower cable holes (6) penetrating the interior; the fence (12) is welded into a quadrilateral frame structure with square steel pipes, a shed roof cover (11) is welded on the top, and a sliding door (13) is provided on the front through the hinge on the left side.

2. A safety protection device for a power transformer according to claim 1, characterized in that: The top surface and bottom surface of the upper cover (1) form an angle of 170 degrees.

3. A safety protection device for a power transformer according to claim 1, characterized in that: The left side plate (5) and the right side plate (10) are provided with left-right symmetrical side hanging rings (2) at the center positions of the upper ends thereof through threads.

4. A safety protection device for a power transformer according to claim 3, characterized in that: The left side plate (5) and the right side plate (10) are provided with two rows of ventilation holes (4) penetrating the interior.

5. A safety protection device for a power transformer according to claim 1, characterized in that: Four sets of symmetrical moving wheels (7) are fixedly arranged at the bottom of the supporting base plate (8).

6. A safety protection device for a power transformer according to claim 1, characterized in that: A support plate fixed to the ground is welded to the bottom of the fence (12).

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