Dry-type transformer and power equipment

Abstract

The invention discloses a dry-type transformer, which comprises a base frame (1), a coil assembly (2), and a cross-flow cooling fan (3). The cooling fan comprises a housing assembly (4), an impeller (5), the housing assembly comprising a first volute (41), a second volute (42), a first side plate (43), a second side plate (44), a throat (47), and a volute tongue (49). An air outlet is formed between the first volute and the second volute, an air inlet is formed between the second volute and the first side plate, a volute tongue is provided on the second volute, and a throat is provided on the first volute, wherein the throat is located upstream of the volute tongue. The invention is characterized in that the invention further comprises an adjustment assembly (6), the adjustment assembly being used to adjust the position of the throat (47), that is, the adjustment assembly being used to adjust the position of the throat along a first direction of the first side plate (43) and the position of the throat along a second direction of the second side plate (44). The invention can adjust the air volume and air pressure of the cross-flow cooling fan, thereby improving the cooling effect of the cooling fan.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment and transformers, and in particular to a dry-type transformer and power equipment. Background Art

[0002] Transformers used in power equipment can be divided into oil-submersible transformers and dry-type transformers. The cooling methods of dry-type transformers are divided into natural cooling and forced cooling. Figure 1 As shown, an existing dry-type transformer includes a base frame 1, a coil assembly 2, and a cross-flow cooling fan 3. The coil assembly 2 is mounted on the top of the base frame 1, and the cooling fan 3 is mounted on the side. The cooling fan 3 is used to force air cooling on the coil assembly 2. The cross-flow cooling fan 3 includes a housing assembly 4 and an impeller 5. The housing assembly includes a first volute, a second volute, a first side plate, a second side plate, a throat, and a volute tongue. The air outlet is formed between the first and second volutes, and the air inlet is formed between the second volute and the first side plate. The second volute is provided with a volute tongue, and the first volute is provided with a throat, which is located upstream of the volute tongue. However, existing cross-flow cooling fans have problems with low air volume and pressure, and poor cooling effect, at equivalent power or size. Summary of the Invention

[0003] The object of the present invention is to overcome the deficiencies in the prior art and provide a dry-type transformer and power equipment, which, through the design of the throat and the adjustment component, specifically the throat is made of a thin film elastic material, the adjustment component is installed on the second side panel, and the adjustment component is used to adjust the position of the throat, that is, the adjustment component is used to adjust the position of the throat along the first direction of the first side panel and the position along the second direction of the second side panel, thereby being able to adjust the airflow intake performance and turbulence performance of the throat of the cross-flow cooling fan, thereby being able to adjust the air volume and air pressure of the cross-flow cooling fan, and improving the cooling effect of the cooling fan.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A dry-type transformer comprises a base frame (1), a coil assembly (2), and a cross-flow cooling fan (3). The coil assembly is installed on the upper part of the base frame, and the cooling fan is installed on the side. The cooling fan is used to force air cooling on the coil assembly. The cross-flow cooling fan comprises a housing assembly (4) and an impeller (5). The impeller comprises a plurality of blades (51) distributed along the circumferential direction. The housing assembly comprises a first volute (41), a second volute (42), a first side plate (43), a second side plate (44), a throat (47), and a volute tongue (49). An air outlet (46) is formed between the first volute and the second volute, and an air inlet (45) is formed between the second volute and the first side plate. The outer wall of the first volute is provided with a second side plate, and the second side plate is provided with a second side plate. The side plate is arranged perpendicularly to the first side plate, a volute tongue is arranged on the second volute, and the volute tongue (49) is the part with the smallest gap between the second volute and the outer periphery of the impeller, and a throat is arranged on the first volute, and the throat (47) is the part with the smallest gap between the first volute and the outer periphery of the impeller, and the throat is located upstream of the volute tongue, characterized in that: it also includes an adjustment component (6), the adjustment component is installed on the second side plate, and the adjustment component is used to adjust the position of the throat (47), that is, the adjustment component is used to adjust the position of the throat along the first direction of the first side plate (43) and the position along the second direction of the second side plate (44), the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the rotation axis of the impeller (5).

[0006] Furthermore, the throat (47) is made of a thin film elastic material or a flexible material, and the elastic material is a non-metallic elastic material or a metallic elastic material.

[0007] Furthermore, a strip-shaped adjustment groove (48) is provided on the second side plate (44), the strip-shaped adjustment groove extends along the second direction of the second side plate, and the adjustment assembly (6) is installed on the strip-shaped adjustment groove 48.

[0008] Furthermore, the adjustment assembly (6) includes a screw (61), an adjustment rod (62), a nut (63), and an operating button (64). One end of the adjustment rod abuts against the throat (47) for adjusting the position of the throat, and the other end is connected to the screw. The other end of the screw is provided with an operating button. A nut is installed on the screw, and the nut is used to fix the adjustment position of the screw.

[0009] Furthermore, the cross section of the regulating rod (62) is spherical, the regulating rod extends along the rotation axis direction of the impeller (5), and the plurality of regulating components (6) are arranged along the rotation axis direction of the impeller.

[0010] Furthermore, the screw rod (61) is fixedly connected to the adjusting rod (62) or the screw rod is rotatably connected to the adjusting rod via a bearing.

[0011] An electric power device with a dry-type transformer comprises the above-mentioned dry-type transformer.

[0012] A dry-type transformer and power equipment of the present invention, through the design of a throat and an adjustment component, specifically, the throat is made of a thin film elastic material, the adjustment component is installed on the second side plate, and the adjustment component is used to adjust the position of the throat, that is, the adjustment component is used to adjust the position of the throat along a first direction of the first side plate and the position along a second direction of the second side plate, thereby being able to adjust the airflow intake performance and turbulence performance of the throat of the cross-flow cooling fan, thereby being able to adjust the air volume and air pressure of the cross-flow cooling fan, thereby improving the cooling effect of the cooling fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of a dry-type transformer in the prior art;

[0014] Figure 2 Schematic diagram of the cooling fan structure of the dry-type transformer of the present invention;

[0015] Figure 3 Schematic diagram of the cooling fan structure of the dry-type transformer of the present invention;

[0016] Figure 4 This is a partially enlarged structural diagram of the cooling fan of the dry-type transformer of the present invention.

[0017] In the figure: base frame 1, coil assembly 2, cross-flow cooling fan 3, housing assembly 4, impeller 5, adjustment assembly 6, first volute 41, second volute 42, first side plate 43, second side plate 44, air inlet 45, air outlet 46, throat 47, strip-shaped adjustment groove 48, volute tongue 49, blade 51, screw 61, adjustment rod 62, nut 63, operating button 64. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] like Figure 1-4As shown, a dry-type transformer includes a base frame 1, a coil assembly 2, and a cross-flow cooling fan 3. The coil assembly 2 is installed on the upper part of the base frame 1, and the cooling fan 3 is installed on the side. The cooling fan 3 is used to force air cooling for the coil assembly 2. The cross-flow cooling fan 3 includes a housing assembly 4 and an impeller 5. The impeller 5 includes a plurality of blades 51 distributed along the circumferential direction. The housing assembly 4 includes a first volute 41, a second volute 42, a first side plate 43, a second side plate 44, a throat 47, and a volute tongue 49. An air outlet 46 is formed between the first volute 41 and the second volute 42, and an air inlet 45 is formed between the second volute 42 and the first side plate 43. The outer wall of the first volute 41 is provided with a second side plate 44, and the second side plate 44 is perpendicular to the first side plate 43. A volute tongue 49 is provided on the second volute 42, and the volute tongue 49 is connected to the second volute 42 and the blades The part with the smallest gap between the outer periphery of the wheel 5, that is, the apex of the volute 49 is the end point with the smallest gap between the second volute 42 and the outer periphery of the impeller 5, and the first volute 41 is provided with a throat 47, which is the part with the smallest gap between the first volute 41 and the outer periphery of the impeller 5, that is, the apex of the throat 47 is the end point with the smallest gap between the first volute 41 and the outer periphery of the impeller 5, and the throat 47 is located upstream of the volute 49, and is characterized in that: it also includes an adjusting component 6, the adjusting component 6 is installed on the second side plate 44, the adjusting component 6 is used to adjust the position of the throat 47, that is, the adjusting component 6 is used to adjust the position of the throat 47 along the first direction of the first side plate 43 and the position along the second direction of the second side plate 44, the first direction is perpendicular to the second direction, and the first direction and the second direction are both perpendicular to the rotation axis of the impeller 5.

[0021] Furthermore, the throat portion 47 is made of a thin film elastic material or a flexible material and has a preset deformation amount. The elastic material is a non-metallic elastic material, and a metallic elastic material is also optional.

[0022] Furthermore, a strip-shaped adjustment slot 48 is defined on the second side plate 44 . The strip-shaped adjustment slot 48 extends along the second direction of the second side plate 44 . The adjustment assembly 6 is installed on / in the strip-shaped adjustment slot 48 .

[0023] Furthermore, the adjustment assembly 6 includes a screw 61, an adjustment rod 62, a nut 63, and an operating button 64. One end of the adjustment rod 62 abuts against the throat 47 for adjusting the position of the throat 47, and the other end is connected to the screw 61. An operating button 64 is provided at the other end of the screw 61. A nut 63 is installed on the screw 61, and the nut 63 is used to fix the adjustment position of the screw 61.

[0024] Furthermore, the cross section of the adjusting rod 62 is spherical, the adjusting rod 62 extends along the rotation axis direction of the impeller 5 , and the plurality of adjusting assemblies 6 are arranged along the rotation axis direction of the impeller 5 .

[0025] Furthermore, the screw rod 61 is fixedly connected to the adjusting rod 62 or the screw rod 61 is rotatably connected to the adjusting rod 62 via a bearing.

[0026] An electric power device with a dry-type transformer comprises the above-mentioned dry-type transformer.

[0027] A dry-type transformer and power equipment of the present invention, through the design of the throat 47 and the adjustment component 6, specifically, the throat 47 is made of a thin film elastic material, the adjustment component 6 is installed on the second side plate 44, and the adjustment component 6 is used to adjust the position of the throat 47, that is, the adjustment component 6 is used to adjust the position of the throat 47 along the first direction of the first side plate 43 and the position along the second direction of the second side plate 44, thereby being able to adjust the airflow intake performance and turbulence performance of the throat 47 of the cross-flow cooling fan 3, thereby being able to adjust the air volume and air pressure of the cross-flow cooling fan 3, thereby improving the cooling effect of the cooling fan.

[0028] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry-type transformer, comprising a base frame (1), a coil assembly (2), and a cross-flow cooling fan (3), wherein the coil assembly is mounted on the upper portion of the base frame, and the cooling fan is mounted on the side portion, the cooling fan being used for forced air cooling of the coil assembly, the cross-flow cooling fan comprising a housing assembly (4), an impeller (5), the impeller comprising a plurality of blades (51) distributed along the circumferential direction, the housing assembly comprising a first volute (41), a second volute (42), a first side plate (43), a second side plate (44), a throat (47), a volute Tongue (49), an air outlet (46) is formed between the first volute and the second volute, an air inlet (45) is formed between the second volute and the first side plate, the outer wall of the first volute is provided with a second side plate, the second side plate is arranged perpendicular to the first side plate, a volute tongue is provided on the second volute, the volute tongue (49) is the part with the minimum gap between the second volute and the outer periphery of the impeller, a throat is provided on the first volute, the throat (47) is the part with the minimum gap between the first volute and the outer periphery of the impeller, and the throat is located upstream of the volute tongue, characterized in that: The invention also includes an adjustment component (6) which is mounted on the second side plate and is used to adjust the position of the throat (47), that is, the adjustment component is used to adjust the position of the throat along a first direction of the first side plate (43) and the position of the throat along a second direction of the second side plate (44), the first direction being perpendicular to the second direction, and both the first direction and the second direction being perpendicular to the rotation axis of the impeller (5).

2. A dry-type transformer according to claim 1, characterized in that: The throat (47) is made of a thin film elastic material or a flexible material, and the elastic material is a non-metallic elastic material or a metallic elastic material.

3. A dry-type transformer according to claim 2, characterized in that: The second side plate (44) is provided with a strip-shaped adjustment groove (48), which extends along the second direction of the second side plate, and the adjustment assembly (6) is installed on the strip-shaped adjustment groove 48.

4. A dry-type transformer according to claim 3, characterized in that: The adjustment assembly (6) comprises a screw (61), an adjustment rod (62), a nut (63), and an operating button (64). One end of the adjustment rod abuts against the throat (47) for adjusting the position of the throat, and the other end is connected to the screw. The other end of the screw is provided with an operating button. A nut is installed on the screw, and the nut is used to fix the adjustment position of the screw.

5. A dry-type transformer according to claim 4, characterized in that: The cross section of the regulating rod (62) is spherical, and the regulating rod extends along the rotation axis direction of the impeller (5), and a plurality of regulating components (6) are arranged along the rotation axis direction of the impeller.

6. A dry-type transformer according to claim 5, characterized in that: The screw rod (61) is fixedly connected to the adjusting rod (62) or the screw rod is rotatably connected to the adjusting rod via a bearing.

7. An electric power equipment having a dry-type transformer, comprising a dry-type transformer according to any one of claims 1 to 6.

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