CN209804358U - Voltage-sharing resistor module and frequency converter - Google Patents

Abstract

The utility model discloses a voltage-sharing resistance module and converter, voltage-sharing resistance module includes upside voltage-sharing resistance (1) and downside voltage-sharing resistance (3) of voltage-sharing resistance installing support (2) and vertical stromatolite installation, voltage-sharing resistance installing support (2) are including the installation downside resistance installation department (21) and the installation of downside voltage-sharing resistance (3) upside resistance installation department (22) of upside voltage-sharing resistance (1), downside resistance installation department (21) with be formed with between upside resistance installation department (22) and reserve built-up layer (23). The utility model discloses an among the voltage-sharing resistance module, be provided with on the voltage-sharing resistance installing support and reserve the overhead layer, should reserve the overhead layer and reserve out certain installation space, can prevent that two upper and lower voltage-sharing resistance that the stromatolite was arranged from taking place between mechanical interference, finally make two voltage-sharing resistance can install and become modular voltage-sharing resistance module, the installation compactness is better.

Description

Voltage-sharing resistor module and frequency converter

Technical Field

The utility model relates to a converter field specifically, relates to a voltage-sharing resistance module and converter.

Background

In the frequency converter, the voltage-sharing resistor mainly has the function of ensuring that the voltages on the capacitors are equal by using a voltage-dividing principle, and if the voltages on the capacitors are not equal, the voltages on the capacitors are unequal due to the difference between the capacities and the insulation resistances of the capacitors, so that the capacitors are possibly broken down.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an install more compact, the more reasonable equalizer resistor module of structure.

In order to realize the above-mentioned purpose, the utility model provides a voltage-sharing resistance module, voltage-sharing resistance module includes the upside voltage-sharing resistance and the downside voltage-sharing resistance of voltage-sharing resistance installing support and vertical stromatolite installation, the voltage-sharing resistance installing support is including the installation downside voltage-sharing resistance's downside resistance installation department and installation upside voltage-sharing resistance's upside resistance installation department, downside resistance installation department with be formed with between the upside resistance installation department and reserve the built-up layer.

In some embodiments, the upper resistor mounting portion and the lower resistor mounting portion are respectively provided with fastener connection holes arranged at intervals, and the upper voltage equalizing resistor and the lower voltage equalizing resistor are respectively mounted to the corresponding upper resistor mounting portion and lower resistor mounting portion via fasteners penetrating through the fastener connection holes.

In some embodiments, the varistor mounting bracket further includes an upper support portion extending upward above the upper varistor mounting portion.

In some embodiments, the voltage-sharing resistor mounting bracket includes an upper plate as the upper resistor mounting portion and a lower plate as the lower resistor mounting portion, the upper plate and the lower plate are vertically and parallelly arranged at a spacing, and the lower plate includes lower lug plates respectively and independently arranged right below two ends of the upper plate.

in some embodiments, the upper supporting portion includes vertical supporting plates extending upward from side edge portions of the upper plate, and top edges of the vertical supporting plates are formed with supporting plate top edges turned over above the upper side voltage-sharing resistors.

Additionally, the utility model also provides a frequency converter, place electric capacity module and the voltage-sharing resistance module in the box in the frequency converter is including in, electric capacity module is including installing a plurality of electric capacities on the electric capacity support, the voltage-sharing resistance module install in on the electric capacity support, the voltage-sharing resistance module includes the upside voltage-sharing resistance and the downside voltage-sharing resistance of voltage-sharing resistance installing support and vertical stromatolite installation, the voltage-sharing resistance installing support is including the installation downside voltage-sharing resistance's downside resistance installation department and installation upside voltage-sharing resistance's upside resistance installation department, downside resistance installation department with be formed with between the upside resistance installation department and reserve the built-up layer.

In some embodiments, the lower resistor installation part is installed on the top surface of the capacitor support, the upper resistor installation part and the lower resistor installation part are respectively provided with fastener connection holes arranged at intervals in a penetrating way, and the capacitor support is provided with capacitor support penetrating connection holes aligned with the fastener connection holes of the lower resistor installation part;

The upper side voltage-sharing resistor is mounted on the upper side resistor mounting part through a fastener penetrating through the fastener connecting hole, and the lower side voltage-sharing resistor is arranged at the bottom of the capacitor support and is mounted on the lower side resistor mounting part through a fastener which penetrates through the capacitor support penetrating hole and the fastener connecting hole in an aligned mode.

In some embodiments, a plurality of capacitors are arranged at intervals along the length direction of the capacitor support, and the voltage equalizing resistor module is arranged at the end of the length direction of the capacitor support.

In some embodiments, the voltage-sharing resistor mounting bracket further includes an upper supporting portion extending upward above the upper resistor mounting portion, the capacitor module includes a capacitor protection plate disposed above the capacitor bracket and covering the plurality of capacitors, and the capacitor protection plate is supported by the upper supporting portion.

In some embodiments, a capacitor isolation installation cavity is formed between the capacitor protection board and a box body shell of the box body, and a plurality of capacitors positioned and installed in the capacitor support are accommodated in the capacitor isolation installation cavity.

Through the technical scheme, the utility model discloses an among the voltage-sharing resistance module, because two voltage-sharing resistance of upside voltage-sharing resistance and downside voltage-sharing resistance adopt range upon range of mode to install respectively in the upper and lower both sides of voltage-sharing resistance installing support, be provided with on the voltage-sharing resistance installing support and reserve the built-in layer, should reserve the built-in layer and reserve certain installation space, can prevent when two voltage-sharing resistance about fixed mounting, two upper and lower voltage-sharing resistance that the stromatolite was arranged take place between the mechanical interference, finally make two voltage-sharing resistance can install become modular voltage-sharing resistance module, be convenient for realize the compact effect of mounting structure.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

Fig. 1 and 2 are perspective views of a mounting panel for a frequency converter according to an embodiment of the present invention;

Fig. 3, 4 and 7 are perspective views of a case housing for a frequency converter according to an embodiment of the present invention;

Figures 5 and 6 show the assembly and disassembly of the mounting panel and the base of the housing of figure 3 (figures 4 or 7);

fig. 8 is a schematic diagram (partial structure is not shown) of the internal structure of the box body cavity of the frequency converter according to the embodiment of the present invention, mainly illustrating the installation structure schematic diagram of the capacitor module and the equalizing resistor module;

FIG. 9 shows a schematic structural diagram of a capacitor module;

FIGS. 10 and 11 are exploded views of a portion of the structure of FIG. 9;

FIG. 12 illustrates an exploded view of the assembly of the capacitive temperature sensor of FIG. 9;

fig. 13 is a perspective view of a capacitor holder with a voltage equalizing resistor module according to an embodiment of the present invention;

FIG. 14 is an exploded view of the assembly of FIG. 13; and

Fig. 15 shows a perspective view of the mounting bracket for the voltage equalizing resistor of fig. 13.

Description of the reference numerals

1 upper side voltage-sharing resistor and 2 voltage-sharing resistor mounting bracket

3 lower side voltage equalizing resistor 4 capacitor

5 capacitance support 6 capacitance protection board

7 fastener 8 box body shell

9 capacitance temperature sensor 10 support

11 power panel 12 lacing tape

21 lower resistor mounting part 22 upper resistor mounting part

201 fastener connecting hole 211 lower ear plate

23 reserved overhead layer 24 upper supporting part

241 vertical supporting plate 242 supporting plate top edge flanging

51 capacitor support through hole 52 capacitor positioning hole

53 electric capacity temperature sensor via hole 54 lacing tape fixed orifices

801 bottom 802 side wall of case

803 end wall of box body

80 housing base 84 mounting panel

805 end peripheral edge retraction bearing platform 806 bearing platform flanging

806a cushion cap turn-ups mounting hole 806b spliced eye

841 panel body 842 panel peripheral flange

843 hemming portion 8420 first rectangular hemming portion

842a plug-in hook 842b panel flanging mounting hole

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction. Wherein "inner and outer" are relative to the center of the chamber, with the center closer to the chamber being "inner" and the center further from the chamber being "outer".

At present, a frequency converter generally adopts a box type (for example, a hanging box) structure, and each component of the frequency converter is installed inside a box cavity surrounded by a box shell. In order to facilitate the disassembly and the maintenance, the mounting panel on the box body shell adopts a detachable connection mode. Generally, a conventional mounting method is to use a plurality of screws to penetrate through a surface of a mounting panel to attach the mounting panel to a housing body of a box. This mode has the problem that the screw quantity is many and the assembly is more loaded down with trivial details, has still influenced the clean sense in surface and the aesthetic property of installation panel simultaneously to because the installation panel has heavier weight usually, make operating personnel when hand installation panel is aimed at one by one, screw up the fastener operate very inconveniently.

To above-mentioned mounting panel's a great deal of problem, the utility model provides a novel a mounting panel for converter, as shown in fig. 1 to fig. 2, this mounting panel 84 includes panel body 841 and panel week along turn-ups 842 for the rectangle cover panel of mask formula, and the panel week is provided with grafting couple 842a on the first rectangle limit turn-ups 8420 along turn-ups 842 and is provided with panel turn-ups mounting hole 842b on other rectangle limit turn-ups.

it is thus clear that, replace the current mounting means that runs through panel body 841 with the fastener, the utility model discloses an installation panel 84 has adopted the rectangle cover panel of face mask formula to on transferring the fixed part of installation panel 84 to panel week along turn-ups 842 and not panel body 841, make this installation panel 84's shroud effect more pleasing to the eye. And simultaneously, the utility model discloses an installation panel 84 has adopted the cooperation connected mode of grafting couple 842a and panel turn-ups mounting hole 842b to the installation operation is the example (dismantlement step is vice versa). Firstly, an operator can fix and limit the first rectangular edge flanging part 8420 at one end of the mounting panel 84 through the inserting hook 842a, and buckle the panel body 841, at this time, the operator can release one hand first, and then fix and mount a small number of panel edge flanging mounting holes 842b on other rectangular edge flanging parts. The mode not only plays a role in saving labor, but also enables the operation to be simpler, more convenient and more humanized, and improves the operation convenience.

In the installation panel 84 of the present invention, the structure and the insertion form of the insertion hook 842a are various. For the plugging manner, the plugging hook 842a can plug the cover vertically towards the housing body (see the housing body 8 of fig. 3) in a direction perpendicular to the panel body 841 of itself; or the inserting hook 842a is parallel to the panel body 841 direction of the self, and is inserted into the cover from top to bottom or from left to right. In addition, the specific shape of the insertion hook 842a is not limited, and may be a polygonal insertion block or a plug.

Specifically, in one embodiment of the mounting panel 84 of the present invention, the inserting hook 842a is disposed on the inner sidewall of the first rectangular flanging part 8420 and is formed as an inward-extending inserting block extending in a direction parallel to the panel body 841. That is, the mounting panel 84 of this embodiment can be inserted into the housing body from the top to the bottom or from the left to the right.

Optionally, the panel peripheral flange 842 is formed at its edge with an inwardly turned hem 843. The bead 843 is formed such that the mounting panel 84 has a panel peripheral flange 842 as a bent flange, and the panel peripheral flange 842 is further bent inward to form the bead 843. This hem portion 843 can not only strengthen the strength of this mounting panel 84, but also enable to avoid the panel periphery to act directly on the palm along the turn-ups 842 when the operator has played the mounting panel 84 at both hands, thereby playing a role in preventing scratching the hand.

Alternatively, the plugging hook 842a is preferably formed on the beading portion 843. That is, the insertion hook 842a extends along the edge of the hem 843. For example, the insertion hook 842a may be connected to the hem portion 843 by welding, or the insertion hook 842a may be integrally formed with the hem portion 843. Of course, the insertion hook 842a may be spaced apart from the hem 843.

Because the box shell of converter adopts the sheet metal component material usually, and the utility model discloses an installation panel 84 also adopts the sheet metal component and for having the rectangle panel of certain total area, its weight is not less than 0.8kg usually in being applied to the finish panel of the box shell of converter usually, installation panel 84. The operator can experience better when installing the installation panel 84 having a heavier mass, and thus, the lifting or holding time can be reduced and the installation procedure of the installation panel 84 can be effectively simplified by the present solution.

The utility model also provides a box shell for converter, as shown in fig. 3 and 4, box shell 8 includes shell this portion 80 and foretell installation panel 84 for converter, and installation panel 84 cover formula is installed on shell this portion 80. Since the utility model discloses a box shell 8 for converter has included foretell the utility model discloses a mounting panel 84, consequently has also included foretell all advantages, no longer gives unnecessary details to this.

The open end of the housing base 80 may further be formed with an end peripheral indented platform 805 extending inward from the peripheral edge, the end peripheral indented platform 805 is formed with a platform flange 806 abutted to the panel peripheral edge flange 842 in a fitting manner, and the platform flange 806 is provided with a platform flange mounting hole 806a aligned with the panel flange mounting hole 842b and an insertion hole 806b aligned with the insertion hook 842a, so that the appearance is more concise and elegant, and the structure is more reasonable. Of course, the open end of the housing base 80 may not be provided with the end peripheral indentation bearing platform 805, and the mounting panel 84 is directly covered and buckled on the housing base 80, which is also the protection range of the box housing 8 for the frequency converter of the present invention.

Further, the flange width of the platform flange 806 may be greater than the flange width of the panel peripheral flange 842, such that a disassembly gap is formed between the panel peripheral flange 842 and the end peripheral flange indented into the platform 805. This dismouting clearance of reserving can be convenient for taking of operating personnel's finger and hold between the fingers for operating personnel's maneuverability is stronger.

As shown in FIG. 7, the gap width L of the attaching/detaching gap is preferably 5mm to 15 mm. Therefore, the integrity and the attractiveness of the product are ensured on the premise of ensuring the convenience of holding by an operator, and the overall appearance of the box body shell 8 is layered.

The utility model discloses an among the dismouting in-process of box shell 8 of converter, as shown in fig. 5 and fig. 6, box shell 8 of converter is the hanging box shell in top, grafting couple 842a sets up on the panel week edge turn-ups 842 at the top of installation panel 84, and only set up 2 or a plurality of panel turn-ups mounting hole 842b on the panel week edge turn-ups 842 of bottom, to this, for the installation is the example, at first aim at grafting couple 842a on the shell this portion 80, then buckle the installation panel 84 cover on the shell this portion 80, can loosen both hands this moment even, at last alright pass panel turn-ups mounting hole 842b with the fastener with on installing panel 84 locking shell this portion 80, the fastener is small in quantity, and easy operation.

Additionally, the utility model provides a converter, this converter include foretell box shell 8 that is used for the converter, therefore this converter has included all above-mentioned advantages of this box shell 8, no longer gives unnecessary details one by one.

In the conventional inverter, since a plurality of capacitors having a large capacity are generally used in the inside of the case body, two or more voltage equalizing resistors are arranged to enhance the reliability of the capacitors. These voltage-sharing resistors are usually installed side by side, and occupy a large installation space, which is not favorable for realizing the requirement of installation compactness of the box body cavity of the box body of the frequency converter.

The utility model provides a novel voltage-sharing resistance module, as shown in fig. 13 and 14, this voltage-sharing resistance module includes upside voltage-sharing resistance 1 and the downside voltage-sharing resistance 3 of voltage-sharing resistance installing support 2 and vertical stromatolite installation, and voltage-sharing resistance installing support 2 (see fig. 15 shown) is formed with between downside resistance installing department 21 and the upside resistance installing department 22 of installing upside voltage-sharing resistance 1 and reserves the built-up layer 23 including installing downside voltage-sharing resistance 3's downside resistance installing department 21.

It is thus clear that in the utility model discloses an among the equalizer resistor module, because two equalizer resistors (including upside equalizer resistor 1 and downside equalizer resistor 3) adopt range upon range of mode to install in the upper and lower both sides of equalizer resistor installing support 2, be provided with on equalizer resistor installing support 2 and reserve the built-in layer 23, should reserve built-in layer 23 and can reserve out certain installation space, can prevent in two equalizer resistors about fixed mounting, two upper and lower equalizer resistors that the stromatolite was arranged take place between mechanical interference, make range upon range of formula's equalizer resistor's installation effect better, finally make two equalizer resistors can install become modular equalizer resistor module, be convenient for realize the compact effect of mounting structure.

As shown in fig. 13 and 14, in general, in an embodiment of the equal safety resistor module of the present invention, the upper resistor mounting portion 22 and the lower resistor mounting portion 21 are respectively penetrated through the fastener connecting holes 201 provided with the interval arrangement, and the upper voltage equalizing resistor 1 and the lower voltage equalizing resistor 3 are respectively mounted to the corresponding upper resistor mounting portion 22 and lower resistor mounting portion 21 via the fasteners 7 passing through the fastener connecting holes 201. In this embodiment, the upper and lower two equalizing resistors are fixedly mounted by using the fastening members 7, and when the fastening members 7 respectively pass through the upper and lower sides of the equalizing resistor mounting bracket 2 to respectively fix the upper equalizing resistor 1 and the lower equalizing resistor 3, the tails of the fastening members 7 on the upper and lower sides can be fully accommodated in the reserved overhead layer 23 of the equalizing resistor mounting bracket 2, so that the problem of mechanical interference between the fastening members 7 is avoided.

the utility model discloses an among the voltage-sharing resistance module, the concrete structural style of voltage-sharing resistance installing support 2 is not limited, can include the structure of multiple difference. The utility model discloses an in an embodiment of voltage-sharing resistance installing support 2, as shown in FIG. 15, voltage-sharing resistance installing support 2 includes upper plate as upside resistance installation department 22 and lower floor's board as downside resistance installation department 21, and upper plate and lower floor's board set up along vertical parallel interval, and lower floor's board is including the lower floor's otic placode 211 that independently sets up under the both ends of upper plate respectively. Generally, since the mounting portions of the equalizing resistors are usually provided at both ends of the body, the equalizing resistor mounting bracket 2 is usually fixed to the capacitor module to ensure the performance of equalizing the voltages across the capacitors by the principle of voltage division, and correspondingly, the lower plate of the equalizing resistor mounting bracket 2 is a portion for connecting the capacitor module, and the lower plate may have the same plate-like structure as the upper plate, which facilitates the processing and manufacturing of the equalizing resistor mounting bracket 2. In fig. 15, the lower plate optionally includes a lower ear plate 211 at two ends, so that the voltage-equalizing resistor mounting bracket 2 can be more stably connected to the capacitor module while ensuring that the lower voltage-equalizing resistor 3 can be fixed, and the supporting effect is good.

With continued reference to fig. 15, the varistor mounting bracket 2 may further include an upper support portion 24 extending upward above the upper resistor mounting portion 22, so that when the varistor module is mounted, the upper support portion 24 above the module can also support and mount other components inside the casing cavity of the frequency converter, such as the capacitor protection plate 6, and will be further described in detail in the capacitor module.

Alternatively, as shown in fig. 15, the upper support portion 24 may include a vertical support plate 241 upwardly protruding from a side edge portion of the upper plate, and a top edge of the vertical support plate 241 is formed with a support plate top edge flange 242 folded over the upper side equalizing resistor 1. The vertical supporting plate 241 is used for raising the overall height of the voltage-sharing resistor mounting bracket 2, and the supporting plate top edge flange 242 is a supporting plane.

The utility model provides a converter, it is shown with reference to fig. 8 to 11, place the electric capacity module and the foretell equalizing resistance module in the box in the converter is including in, electric capacity module is including installing a plurality of electric capacity 4 on electric capacity support 5, and equalizing resistance module installs on electric capacity support 5.

Therefore, in the box cavity of the frequency converter, the voltage equalizing resistor module and the capacitor module are assembled and installed, so that the structure is more reasonable and reliable, and the design of the installation compactness of the inner space of the whole box cavity is facilitated.

in an assembled module composed of a capacitor module and a voltage-sharing resistor module, referring to fig. 13, a lower resistor mounting portion 21 is mounted on a top surface of a capacitor support 5, an upper resistor mounting portion 22 and the lower resistor mounting portion 21 are respectively provided with fastener connecting holes 201 arranged at intervals in a penetrating manner, and a capacitor support penetrating hole 51 aligned with the fastener connecting holes 201 of the lower resistor mounting portion 21 is provided on the capacitor support 5.

The upper side voltage equalizing resistor 1 is mounted on the upper side resistor mounting part 22 through a fastener 7 passing through a fastener connecting hole 201, and the lower side voltage equalizing resistor 3 is arranged at the bottom of the capacitor support 5 and mounted on the lower side resistor mounting part 21 through the fastener 7 passing through the capacitor support through hole 51 and the fastener connecting hole 201 in alignment.

Referring to fig. 8 to 11, the capacitors 4 are arranged at intervals along the length direction of the capacitor support 5, and the voltage equalizing resistor modules are arranged at the end portions of the capacitor support 5 in the length direction, so that the arrangement between the voltage equalizing resistor modules and the capacitor modules is closer and more compact, the space utilization rate is higher, and the space utilization rate of the inside of the whole box cavity can be improved.

As shown in fig. 9 and fig. 10, in particular, in the frequency converter of the present invention, the capacitor module includes the capacitor protection plate 6, the capacitor protection plate 6 is disposed above the capacitor support 5 and covers the plurality of capacitors 4, since the voltage-equalizing resistor mounting bracket 2 may further include the upper support portion 24 upwardly extending above the upper resistor mounting portion 22, the capacitor protection plate 6 may be supported on the upper support portion 24 of the voltage-equalizing resistor mounting bracket 2.

Like this, electric capacity protection shield 6 supports on voltage-sharing resistor installing support 2 to make voltage-sharing resistor installing support 2 can also support the electric capacity protection shield 6 of addding on having the basis that can be used to install equal ampere resistance, give full play to a plurality of use values of part, reduce the use quantity of part, and then improved the space utilization in the box intracavity. Simultaneously, owing to adopted a plurality of large capacity electric capacities usually in current converter, in the use of these electric capacities, because factor such as voltage variation is big and ambient temperature changes, cause electric capacity to burn out the phenomenon of explosion even very probably, have certain potential safety hazard, for this reason, the utility model discloses an in the converter, add electric capacity protection shield 6 that has certain safeguard function in a plurality of electric capacity 4's top, electric capacity protection shield 6 can block electric capacity 4 and explode the phenomenon that the material that splits after exploding splashes the human body and injure people under the abnormal conditions to the safety in utilization of product has been improved.

Wherein, be formed with electric capacity between the box shell 8 of electric capacity protection shield 6 and box and keep apart the installation cavity, equal ampere of resistance module, electric capacity support 5 and a plurality of electric capacity 4 all hold in electric capacity keeps apart the installation cavity.

As shown in fig. 11, the capacitor isolation mounting cavity is defined at an end of the cavity by the bottom wall 801 of the box housing 8, the side wall 802 of the box, the end wall 803 of the box, and the capacitor protection plate 6 is disposed parallel to and spaced apart from the bottom wall 801 of the box.

In one embodiment of the frequency converter of the present invention, the inner wall of the box casing 8 may be provided with a support frame 10, and at least a portion of the plate edges of the capacitor support 5 and the capacitor protection plate 6 are mounted on the support frame. Thus, as shown in fig. 10, one end of the capacitor protection plate 6 can be supported and fixed on the supporting frame 10, and the other end is fixedly connected to the mounting bracket 2 of the equal installation resistor, so that the mounting structure is simple and reasonable. The support frame 10 may be fixed to an inner wall surface of the casing 8 by welding or the like.

In another embodiment of the present invention, at least a portion of the plates of the frequency converter are formed with plate edge flanges, and the capacitor support 5 and the capacitor protection plate 6 are fixedly connected to the inner wall surface of the box casing 8 through the respective plates along the flanges. That is, the capacitor support 5 and the capacitor protection plate 6 are each formed with a plate flange for connection, and may be connected by means of a fastener through connection or welding.

Referring to fig. 8 and 12, a plurality of capacitor positioning holes 52 are formed through the capacitor support 5, the capacitors 4 are cylindrical and axially penetrate through the capacitor positioning holes 52, and the capacitor protection plate 6 covers at least the top end of each capacitor 4 to ensure the protection effect of the capacitor protection plate 6 on the capacitors 4.

Referring to fig. 10 and 12, a capacitance temperature sensor through hole 53 is formed in the middle of the capacitance support 5, and a capacitance temperature sensor 9 is inserted into the capacitance temperature sensor through hole 53. Like this, through setting up electric capacity temperature sensor 9 in the middle part of electric capacity support 5, the actual ambient temperature of a plurality of electric capacity 4 of just accurate detection of ability, under this condition, through in time to electric capacity 4's in the box intracavity ambient temperature's control and problem processing, ensured electric capacity 4's safety in utilization and can improve electric capacity 4's life.

Wherein, still be equipped with lacing tape fixed orifices 54 on the capacitive support 5, electric capacity temperature sensor 9 is fixed in lacing tape fixed orifices 54 through lacing tape 12 to make electric capacity temperature sensor 9's fixed more reliable, clean and tidy.

Optionally, the capacitor support 5 and the capacitor protection plate 6 are both sheet metal parts, and on the premise that the capacitor protection plate 6 has a protection blocking effect, the processing and manufacturing and the production cost reduction are further facilitated.

wherein, in the utility model discloses an among the converter, the converter is still including installing power strip 1 in the top surface top of electric capacity protection shield 6. Therefore, the additionally arranged capacitor protection plate 6 not only can play a role in improving the protection effect of the capacitor 4, but also can be arranged in a layered and partitioned manner in the cavity of the box body, and provides a mounting and fixing space for components such as the power panel 1 on the surface space of the capacitor protection plate 6, so that the space utilization rate of products of the frequency converter is further improved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (10)

1. The utility model provides a voltage-sharing resistance module, its characterized in that, voltage-sharing resistance module includes upside voltage-sharing resistance (1) and downside voltage-sharing resistance (3) of voltage-sharing resistance installing support (2) and vertical stromatolite installation, voltage-sharing resistance installing support (2) are including the installation downside resistance installation department (21) and the installation of downside voltage-sharing resistance (3) upside resistance installation department (22) of upside voltage-sharing resistance (1), downside resistance installation department (21) with be formed with between upside resistance installation department (22) and reserve built on stilts layer (23).

2. The voltage-sharing resistor module according to claim 1, characterized in that the upper resistor mounting part (22) and the lower resistor mounting part (21) are respectively provided with fastener connecting holes (201) arranged at intervals, and the upper voltage-sharing resistor (1) and the lower voltage-sharing resistor (3) are respectively mounted to the corresponding upper resistor mounting part (22) and lower resistor mounting part (21) via fasteners (7) penetrating through the fastener connecting holes (201).

3. The varistor module of claim 1, wherein said varistor mounting bracket (2) further comprises an upper support portion (24) projecting upwardly above said upper varistor mounting portion (22).

4. The voltage-sharing resistor module according to claim 3, wherein the voltage-sharing resistor mounting bracket (2) comprises an upper plate as the upper resistor mounting portion (22) and a lower plate as the lower resistor mounting portion (21), the upper plate and the lower plate are arranged in parallel and vertically spaced, and the lower plate comprises lower lug plates (211) which are respectively and independently arranged right below two ends of the upper plate.

5. The voltage equalizing resistor module according to claim 4, wherein the upper support part (24) comprises a vertical support plate (241) extending upward from a side edge of the upper plate, and a top edge of the vertical support plate (241) is formed with a support plate top edge flange (242) folded to above the upper side voltage equalizing resistor (1).

6. A frequency converter, characterized in that the frequency converter comprises a capacitance module and a voltage-sharing resistance module according to any one of claims 1-5, wherein the capacitance module is arranged in a box body, the capacitor module comprises a plurality of capacitors (4) mounted on a capacitor support (5), the voltage-sharing resistance module is arranged on the capacitor bracket (5), the voltage-sharing resistance module comprises a voltage-sharing resistance mounting bracket (2), an upper side voltage-sharing resistance (1) and a lower side voltage-sharing resistance (3) which are vertically stacked, the voltage-sharing resistor mounting bracket (2) comprises a lower side resistor mounting part (21) for mounting the lower side voltage-sharing resistor (3) and an upper side resistor mounting part (22) for mounting the upper side voltage-sharing resistor (1), and a reserved overhead layer (23) is formed between the lower side resistor installation part (21) and the upper side resistor installation part (22).

7. The frequency converter according to claim 6, wherein the lower resistor mounting part (21) is mounted on the top surface of the capacitor support (5), the upper resistor mounting part (22) and the lower resistor mounting part (21) are respectively provided with fastener connecting holes (201) arranged at intervals in a penetrating manner, and the capacitor support (5) is provided with capacitor support penetrating connecting holes (51) aligned with the fastener connecting holes (201) of the lower resistor mounting part (21);

The capacitor support is characterized in that the upper side voltage-sharing resistor (1) is mounted on the upper side resistor mounting part (22) through a fastener (7) penetrating through a fastener connecting hole (201), and the lower side voltage-sharing resistor (3) is arranged at the bottom of the capacitor support (5) and is mounted on the lower side resistor mounting part (21) through a fastener (7) which penetrates through a capacitor support through hole (51) and the fastener connecting hole (201) in an aligning mode.

8. The frequency converter according to claim 6, characterized in that a plurality of capacitors (4) are arranged at intervals along the length direction of the capacitor support (5), and the voltage equalizing resistor module is arranged at the end of the length direction of the capacitor support (5).

9. The frequency converter according to claim 6, wherein said voltage grading resistor mounting bracket (2) further comprises an upper support portion (24) projecting upward above said upper resistor mounting portion (22), said capacitor module comprises a capacitor protection plate (6), said capacitor protection plate (6) is disposed above said capacitor bracket (5) and covers a plurality of said capacitors (4), said capacitor protection plate (6) is supported on said upper support portion (24).

10. The frequency converter according to claim 9, characterized in that a capacitive isolation mounting cavity is formed between the capacitive protection plate (6) and the box body housing (8) of the box body, and a plurality of capacitors (4) positioned and mounted in the capacitive bracket (5) are accommodated in the capacitive isolation mounting cavity.