A controlled frequency conversion device and a frequency conversion system

Abstract

The present invention relates to the technical field of water pumps, and specifically relates to a controlled frequency conversion device and a frequency conversion system, including a frequency conversion cabinet body and a first heat dissipation component. The first heat dissipation component includes a first heat dissipation fan and a first anti-blocking structure. The first anti-blocking structure includes a first telescopic cylinder, a first movable plate, and a plurality of second anti-blocking units. The first telescopic cylinder is fixedly installed inside the frequency conversion cabinet body. The first movable plate is slidably connected to the frequency conversion cabinet body, and the first movable plate is fixedly connected to the output end of the first telescopic cylinder. A first anti-blocking unit is arranged between any two adjacent longitudinally arranged second heat dissipation holes. The first anti-blocking unit includes a first spring and a first anti-blocking column. The two ends of the first spring are respectively fixedly connected to the first movable plate and the first anti-blocking column. The first spring is located inside the first movable plate. The first anti-blocking column is slidably connected to the first movable plate. Through the above structural arrangement, the first heat dissipation holes can be automatically cleaned, thereby maintaining the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and particularly to a controlled frequency conversion device and a frequency conversion system. Background Art

[0002] A water pump is a common general machinery, which is widely used in various sectors of the national economy such as agricultural drainage and irrigation, water conservancy and electric power, petrochemical industry, mining machinery, aerospace, etc.

[0003] A water pump controlled frequency conversion device is a device used to perform frequency conversion on a water pump. Various drive modules are installed in a frequency conversion cabinet to control the water pump, so as to achieve the purpose of frequency conversion of the water pump. The heat dissipation of the frequency conversion cabinet is generally carried out by setting heat dissipation holes on the frequency conversion cabinet. However, after the water pump controlled frequency conversion device operates for a long time, the heat dissipation holes will be blocked, thus affecting the heat dissipation effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a controlled frequency conversion device and a frequency conversion system, which can automatically clean the heat dissipation holes regularly to maintain the heat dissipation effect.

[0005] To achieve the above purpose, the present invention provides a controlled frequency conversion device, including a frequency conversion cabinet and a first heat dissipation component. A plurality of first heat dissipation holes are provided on the side surface of the frequency conversion cabinet, and the distance between any two longitudinally arranged first heat dissipation holes adjacent to each other is the aperture length of the first heat dissipation hole; the first heat dissipation component includes a first heat dissipation fan and a first anti-blocking structure. The first heat dissipation fan is fixedly installed on the outside of the frequency conversion cabinet and is located at the first heat dissipation hole. The first anti-blocking structure includes a first telescopic cylinder, a first movable plate and a plurality of second anti-blocking units. The first telescopic cylinder is fixedly installed inside the frequency conversion cabinet and is located above the first heat dissipation hole. The first movable plate is provided with a plurality of second heat dissipation holes at intervals corresponding to the plurality of first heat dissipation holes. The first movable plate is slidably connected to the frequency conversion cabinet, and the first movable plate is fixedly connected to the output end of the first telescopic cylinder. One first anti-blocking unit is arranged between any two longitudinally arranged second heat dissipation holes adjacent to each other. The first anti-blocking unit includes a first spring and a first anti-blocking column. The two ends of the first spring are respectively fixedly connected to the first movable plate and the first anti-blocking column. The first spring is located inside the first movable plate. The first anti-blocking column is slidably connected to the first movable plate, and the end of the first anti-blocking column away from the first spring is spherical.

[0006] Wherein, the first heat dissipation component further includes movable bolts and mounting strips. Mounting strips are provided on both the upper and lower sides of the first heat dissipation fan. The mounting strip is provided with through holes, and the movable bolts pass through the through holes and are threadedly connected to the frequency conversion cabinet.

[0007] Among them, the installation bar is provided with a positioning bracket, the positioning bracket is vertically arranged with the installation bar, the variable-frequency cabinet body is provided with a positioning port adapted to the positioning bracket, and the positioning bracket is located inside the positioning groove.

[0008] Among them, the controlled variable-frequency device further includes a second heat dissipation component, the variable-frequency cabinet body further has a plurality of third heat dissipation holes, the size of the third heat dissipation holes is the same as the aperture of the first heat dissipation holes, and the third heat dissipation holes and the first heat dissipation holes are arranged in a staggered manner in the horizontal direction. The distance between any two adjacent longitudinally arranged third heat dissipation holes is the aperture length of the third heat dissipation holes. The second heat dissipation component includes a second heat dissipation fan and a second anti-blocking structure. The second heat dissipation fan is fixedly installed on the other outer side of the variable-frequency cabinet body and is located at the third heat dissipation holes. The second anti-blocking structure includes a second movable plate and a plurality of second anti-blocking units. The second movable plate is provided with a plurality of fourth heat dissipation holes at intervals corresponding to the plurality of third heat dissipation holes. The second movable plate is slidably connected to the variable-frequency cabinet body. One of the second anti-blocking units is arranged between any two adjacent longitudinally arranged fourth heat dissipation holes. The second anti-blocking unit includes a second spring and a second anti-blocking column. Two ends of the second spring are respectively fixedly connected to the second movable plate and the second anti-blocking column. The second spring is located inside the second movable plate. The second anti-blocking column is slidably connected to the second movable plate. One end of the second anti-blocking column away from the second spring is spherical.

[0009] Among them, the second heat dissipation component further includes a linkage shaft. One end of the linkage shaft is fixedly connected to the second movable plate, and the other end of the linkage shaft is fixedly connected to the output end of the first telescopic cylinder.

[0010] The present invention also provides a variable-frequency system, which includes the above-mentioned controlled variable-frequency device, and further includes a control module and a temperature monitoring module. The control module is electrically connected to the monitoring module. The control module is used to control the operation of the first telescopic cylinder, and the temperature monitoring module is used to monitor the temperature inside the variable-frequency cabinet body in real time.

[0011] A controlled frequency conversion device and a frequency conversion system of the present invention. When dissipating heat from the frequency conversion cabinet body of the slope, the first heat dissipation hole and the second heat dissipation hole are arranged to coincide, so that cold air can enter the interior of the frequency conversion cabinet through the first heat dissipation hole and the second heat dissipation hole to dissipate heat from the drive module inside the frequency conversion cabinet. When the first heat dissipation hole is blocked due to the long-term operation of the present controlled frequency conversion device, the first telescopic cylinder can be operated, so that the first telescopic cylinder drives the first movable plate to move up and down relative to the frequency conversion cabinet body, so that the second heat dissipation hole is gradually misaligned with the first heat dissipation hole. At this time, the first anti-blocking column enters the first heat dissipation hole under the abutting action of the first spring to extrude the impurities in the first heat dissipation hole, so as to clean the impurities in the first heat dissipation hole. Subsequently, the first telescopic cylinder drives the first movable plate to reset, so that the first heat dissipation hole and the second heat dissipation hole coincide again to continue heat dissipation, maintaining the ventilation effect of the frequency conversion cabinet body, and thus maintaining the heat dissipation effect. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0013] Figure 1 It is a structural sectional view of the first embodiment of the present invention.

[0014] Figure 2 It is of the present invention Figure 1 Partial enlarged view of part A.

[0015] Figure 3 It is a structural sectional view of the second embodiment of the present invention.

[0016] Figure 4 It is of the present invention Figure 3 Partial enlarged view of part B.

[0017] Figure 5 It is a structural sectional view of the third embodiment of the present invention.

[0018] Figure 6 It is of the present invention Figure 5 Partial enlarged view of part C.

[0019] 101 - Frequency conversion cabinet, 102 - First heat dissipation hole, 103 - First heat dissipation fan, 104 - First telescopic cylinder, 105 - First movable plate, 106 - Second heat dissipation hole, 107 - First spring, 108 - First anti - blocking column, 109 - Movable bolt, 110 - Installation strip, 111 - Through hole, 112 - Positioning bracket, 113 - Positioning port, 201 - Third heat dissipation hole, 202 - Second heat dissipation fan, 203 - Second movable plate, 204 - Fourth heat dissipation hole, 205 - Second spring, 206 - Second anti - blocking column, 207 - Linkage shaft, 301 - Vertical plate, 302 - Installation cavity, 303 - Third spring, 304 - Telescopic rod, 305 - Supporting block, 306 - First mounting seat, 307 - Second mounting seat, 308 - Tightening screw, 309 - Fixed block. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0021] The first embodiment of the present application is as follows:

[0022] Please refer to Figure 1 and Figure 2 , Figure 1 which is a structural cross - sectional view of the first embodiment of the present invention, Figure 2 and Figure 1 is a partial enlarged view of the A - area in

[0023] The present invention provides a controlled frequency conversion device, including a frequency conversion cabinet 101 and a first heat dissipation component. The first heat dissipation component includes a first heat dissipation fan 103, a first anti - blocking structure, a movable bolt 109 and an installation strip 110. The first anti - blocking structure includes a first telescopic cylinder 104, a first movable plate 105 and a plurality of second anti - blocking units;

[0024] For this specific embodiment, a plurality of first heat dissipation holes 102 are provided on the side surface of the frequency conversion cabinet body 101, and the distance between any two longitudinally arranged first heat dissipation holes 102 adjacent to each other is the aperture length of the first heat dissipation hole 102; the first heat dissipation fan 103 is fixedly installed on the outer side of the frequency conversion cabinet body 101 and is located at the first heat dissipation hole 102, the first telescopic cylinder 104 is fixedly installed on the inner side of the frequency conversion cabinet body 101 and is located above the first heat dissipation hole 102, the first movable plate 105 is provided with a plurality of second heat dissipation holes 106 at intervals corresponding to the plurality of first heat dissipation holes 102, the first movable plate 105 is slidably connected to the frequency conversion cabinet body 101, and the first movable plate 105 is fixedly connected to the output end of the first telescopic cylinder 104. A first anti-blocking unit is arranged between any two longitudinally arranged second heat dissipation holes 106 adjacent to each other. The first anti-blocking unit includes a first spring 107 and a first anti-blocking column 108. The two ends of the first spring 107 are respectively fixedly connected to the first movable plate 105 and the first anti-blocking column 108. The first spring 107 is located inside the first movable plate 105. The first anti-blocking column 108 is slidably connected to the first movable plate 105, and the end of the first anti-blocking column 108 away from the first spring 107 is spherical.The first cooling fan 103 is arranged at the first cooling hole 102 to provide cold air and enter the variable-frequency cabinet body 101 through the first cooling hole 102 to cool the drive module in the variable-frequency cabinet body 101. The first movable plate 105 can move up and down relative to the variable-frequency cabinet body 101. The first telescopic cylinder 104 is used to drive the first movable plate 105 to move. A plurality of the second cooling holes 106 are arranged on the first movable plate 105 corresponding to the first cooling hole 102. When cooling the slope variable-frequency cabinet body 101, the first cooling hole 102 and the second cooling holes 106 are arranged in coincidence, so that cold air can enter the interior of the variable-frequency cabinet body 101 through the first cooling hole 102 and the second cooling holes 106 to cool the drive module inside the variable-frequency cabinet body 101. When the first cooling hole 102 is blocked due to the long-term operation of the controlled variable-frequency device, the first telescopic cylinder 104 can be operated to drive the first movable plate 105 to move up and down relative to the variable-frequency cabinet body 101, so that the second cooling holes 106 are gradually misaligned with the first cooling hole 102. At this time, the first anti-blocking column 108 enters the first cooling hole 102 under the abutting action of the first spring 107 to squeeze out the impurities in the first cooling hole 102, so as to clean the impurities in the first cooling hole 102. Subsequently, the first telescopic cylinder 104 drives the first movable plate 105 to reset, so that the first cooling hole 102 and the second cooling holes 106 coincide again to continue cooling. Similarly, the impurities in the second cooling holes 106 can be processed in the same way. After processing the impurities in the first cooling hole 102 and the second cooling holes 106, the first cooling hole 102 and the second cooling holes 106 are no longer blocked, maintaining the ventilation effect of the variable-frequency cabinet body 101, and thus maintaining the cooling effect.

[0025] Secondly, mounting strips 110 are arranged on both the upper and lower sides of the first cooling fan 103. The mounting strips 110 are provided with through holes 111. The movable bolts 109 pass through the through holes 111 and are threadedly connected to the variable-frequency cabinet body 101. The movable bolts 109 pass through the through holes 111 of the mounting strips 110 and are fixed to the variable-frequency cabinet body 101, thereby fixing the first cooling fan 103 at the first cooling hole 102.

[0026] In addition, the mounting strip 110 is provided with a positioning bracket 112 which is perpendicular to the mounting strip 110. The variable-frequency cabinet body 101 is provided with a positioning port 113 adapted to the positioning bracket 112, and the positioning bracket 112 is located inside the positioning groove. When installing the first cooling fan 103, align the positioning bracket 112 with the positioning port 113 and insert it to position the positioning strip, so as to facilitate screwing the movable bolt 109 into the through hole 111, thereby facilitating the installation of the first cooling fan 103.

[0027] When using a controlled variable-frequency device of this embodiment to clean the impurities in the first heat dissipation hole 102, operate the first telescopic cylinder 104, so that the first telescopic cylinder 104 drives the first movable plate 105 to move up and down relative to the variable-frequency cabinet body 101, so that the second heat dissipation hole 106 is gradually misaligned with the first heat dissipation hole 102. At this time, the first anti-blocking column 108 enters the first heat dissipation hole 102 under the abutting action of the first spring 107 to squeeze out the impurities in the first heat dissipation hole 102, thereby cleaning the impurities in the first heat dissipation hole 102. Subsequently, the first telescopic cylinder 104 drives the first movable plate 105 to reset, so that the first heat dissipation hole 102 and the second heat dissipation hole 106 coincide again to continue heat dissipation. After processing the impurities in the first heat dissipation hole 102, the first heat dissipation hole 102 is no longer blocked, maintaining the ventilation effect of the variable-frequency cabinet body 101, thereby maintaining the heat dissipation effect.

[0028] The second embodiment of the present application is as follows:

[0029] On the basis of the first embodiment, please refer to Figure 3 and Figure 4 , Figure 3 which is a structural cross-sectional view of the second embodiment of the present invention, Figure 4 and Figure 3 is a partial enlarged view of the B position in

[0030] The controlled variable-frequency device and the variable-frequency system of this embodiment further include a second heat dissipation component, and the second heat dissipation component includes a second cooling fan 202 and a second anti-blocking structure. The second anti-blocking structure includes a second movable plate 203 and a plurality of second anti-blocking units;

[0031] For this specific embodiment, the variable-frequency cabinet body 101 further has a plurality of third heat dissipation holes 201. The size of the third heat dissipation holes 201 is the same as the aperture of the first heat dissipation holes 102, and the third heat dissipation holes 201 and the first heat dissipation holes 102 are arranged in a staggered manner in the horizontal direction. The distance between any two adjacent longitudinally arranged third heat dissipation holes 201 is the aperture length of the third heat dissipation holes 201. The second heat dissipation fan 202 is fixedly installed on the other outer side of the variable-frequency cabinet body 101 and is located at the third heat dissipation holes 201. The second movable plate 203 is provided with a plurality of fourth heat dissipation holes 204 at intervals corresponding to the plurality of third heat dissipation holes 201. The second movable plate 203 is slidably connected to the variable-frequency cabinet body 101. A second anti-blocking unit is arranged between any two adjacent longitudinally arranged fourth heat dissipation holes 204. The second anti-blocking unit includes a second spring 205 and a second anti-blocking column 206. The two ends of the second spring 205 are respectively fixedly connected to the second movable plate 203 and the second anti-blocking column 206. The second spring 205 is located inside the second movable plate 203. The second anti-blocking column 206 is slidably connected to the second movable plate 203. The end of the second anti-blocking column 206 away from the second spring 205 is spherical. The second heat dissipation fan 202 is arranged at the second heat dissipation holes 106 to provide cold air and enter the variable-frequency cabinet body 101 through the second heat dissipation holes 106 to dissipate heat from the drive module inside the variable-frequency cabinet body 101. The second movable plate 203 can move up and down relative to the variable-frequency cabinet body 101. A plurality of fourth heat dissipation holes 204 are arranged on the second movable plate 203 corresponding to the third heat dissipation holes 201. When dissipating heat from the slope variable-frequency cabinet body 101, the third heat dissipation holes 201 and the fourth heat dissipation holes 204 are arranged in coincidence, so that cold air can enter the interior of the variable-frequency cabinet body 101 through the third heat dissipation holes 201 and the fourth heat dissipation holes to dissipate heat from the drive module inside the variable-frequency cabinet body 101. When the controlled variable-frequency device operates for too long and the third heat dissipation holes 201 are somewhat blocked, the second movable plate 203 can be moved, so that the third heat dissipation holes 201 are gradually staggered from the fourth heat dissipation holes 204. At this time, the second anti-blocking column 206 enters the third heat dissipation holes 201 under the abutting action of the second spring 205 to squeeze out the impurities in the third heat dissipation holes 201, so as to clean the impurities in the third heat dissipation holes 201. The first heat dissipation component and the second heat dissipation component cooperate with each other to improve the heat dissipation performance of the variable-frequency body, so as to maintain the heat dissipation effect.

[0032] Secondly, one end of the linkage shaft 207 is fixedly connected to the second movable plate 203, and the other end of the linkage shaft 207 is fixedly connected to the output end of the first telescopic cylinder 104. The linkage shaft 207 connects the second movable plate 203 and the first telescopic cylinder 104, so that the first telescopic cylinder 104 can drive the first movable plate 105 and the second movable plate 203 to move simultaneously.

[0033] When using a controlled frequency conversion device according to this embodiment to clean the impurities in the first heat dissipation hole 102 and the third heat dissipation hole 201, the first telescopic cylinder 104 is operated, so that the first telescopic cylinder 104 drives the first movable plate 105 and the second movable plate 203 to move up and down relative to the frequency conversion cabinet body 101, so that the second heat dissipation hole 106 is gradually misaligned with the first heat dissipation hole 102, and the fourth heat dissipation hole 204 is gradually misaligned with the third heat dissipation hole 201. At this time, the first anti-blocking column 108 enters the first heat dissipation hole 102 under the abutting action of the first spring 107, and the second anti-blocking column 206 enters the third heat dissipation hole 201 under the abutting action of the second spring 205, so as to squeeze out the impurities in the first heat dissipation hole 102 and the third heat dissipation hole 201, thereby cleaning the impurities in the first heat dissipation hole 102 and the third heat dissipation hole 201. Subsequently, the first telescopic cylinder 104 drives the first movable plate 105 and the second movable plate 203 to reset, so that the first heat dissipation hole 102 and the second heat dissipation hole 106 coincide again, and the fourth heat dissipation hole 204 and the third heat dissipation hole 201 coincide, so as to continue heat dissipation. After the impurities in the first heat dissipation hole 102 and the third heat dissipation hole 201 are processed, the first heat dissipation hole 102 and the third heat dissipation hole 201 are no longer blocked, maintaining the ventilation effect of the frequency conversion cabinet body 101, thereby maintaining the heat dissipation effect.

[0034] The third embodiment of the present application is:

[0035] On the basis of the second embodiment, please refer to Figure 5 and Figure 6 , Figure 5 is a structural sectional view of the third embodiment of the present invention, Figure 6 is the Figure 5 partial enlarged view at C in the present invention.

[0036] The controlled frequency conversion device and the frequency conversion system of this embodiment further include a vertical plate 301;

[0037] For this specific embodiment, the vertical plate 301 is slidably connected to the variable-frequency cabinet body 101. The vertical plate 301 is located inside the variable-frequency cabinet body 101. On both sides of the vertical plate 301, a plurality of installation cavities 302 for installing drive modules are arranged at intervals in the longitudinal direction. The vertical plate 301 is used to install the drive module, and the vertical plate 301 can slide out of the variable-frequency cabinet body 101 to facilitate the installation of the drive module.

[0038] Secondly, a holding structure is provided at the top of any one of the installation cavities 302. The holding structure includes a third spring 303, a telescopic rod 304, and a holding block 305. The two ends of the third spring 303 are respectively fixedly connected to the vertical plate 301 and the holding block 305. The telescopic rod 304 is arranged inside the third spring 303, and the two ends of the telescopic rod 304 are respectively fixedly connected to the vertical plate 301 and the holding block 305. The holding structure is used to hold the drive module. When the drive module is installed in the installation cavity 302, the third spring 303 holds the holding block 305, so that the holding block 305 holds the drive module, thereby initially fixing the drive module inside the installation cavity 302.

[0039] In addition, a fixing structure is further provided at any one of the installation cavities 302. The fixing structure includes a first mounting seat 306, a second mounting seat 307, a locking screw, and a fixing block 309. The first mounting seat 306 and the second mounting seat 307 are respectively fixedly connected to the vertical plate 301. The first mounting seat 306 and the second mounting seat 307 are respectively located on the upper and lower sides of the installation cavity 302. The locking screw is penetrated through the first mounting seat 306 and is threadedly connected to the first mounting seat 306. The fixing block 309 is arranged below the locking screw. The fixing structure is used to fix the drive module. By turning the locking screw, the fixing block 309 holds the drive module, and the fixing block 309 and the second mounting seat 307 interact to fix the drive module.

[0040] When installing the drive module using a controlled variable-frequency device according to this embodiment, when the drive module is installed in the installation cavity 302, the third spring 303 holds the holding block 305, so that the holding block 305 holds the drive module, thereby initially fixing the drive module inside the installation cavity 302. Subsequently, turn the locking screw so that the fixing block 309 holds the drive module, and the fixing block 309 and the second mounting seat 307 interact to fix the drive module.

[0041] The present invention also provides a frequency conversion system, which includes the controlled frequency conversion device described above, and also includes a control module and a temperature monitoring module. The control module is electrically connected to the monitoring module. The control module is used to control the operation of the first telescopic cylinder 104, and the temperature monitoring module is used to monitor the temperature inside the frequency conversion cabinet 101 in real time. The temperature monitoring module can monitor the temperature in the frequency conversion cabinet 101 in real time. When the temperature monitoring module monitors that the temperature inside the frequency conversion cabinet 101 exceeds the set range, it sends a signal to the control module, and the control module controls the first telescopic cylinder 104 to operate to drive the first movable plate 105 and the second movable plate 203 to move, so that the first anti-blocking column 108 and the second anti-blocking column 206 respectively enter the first heat dissipation hole 102 and the third heat dissipation hole 201 for cleaning, thereby maintaining the heat dissipation effect of the frequency conversion cabinet 101.

[0042] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A controlled frequency conversion device, characterized in that it includes a frequency conversion cabinet body and a first heat dissipation component. A plurality of first heat dissipation holes are provided on the side surface of the frequency conversion cabinet body, and the distance between any two longitudinally arranged first heat dissipation holes adjacent to each other is the aperture length of the first heat dissipation hole; the first heat dissipation component includes a first heat dissipation fan and a first anti-blocking structure. The first heat dissipation fan is fixedly installed outside the frequency conversion cabinet body and is located at the first heat dissipation hole. The first anti-blocking structure includes a first telescopic cylinder, a first movable plate and a plurality of first anti-blocking units. The first telescopic cylinder is fixedly installed inside the frequency conversion cabinet body and is located above the first heat dissipation hole. The first movable plate is provided with a plurality of second heat dissipation holes at intervals corresponding to the plurality of first heat dissipation holes. The first movable plate is slidably connected to the frequency conversion cabinet body, and the first movable plate is fixedly connected to the output end of the first telescopic cylinder. One first anti-blocking unit is arranged between any two longitudinally arranged second heat dissipation holes adjacent to each other. The first anti-blocking unit includes a first spring and a first anti-blocking column. The two ends of the first spring are respectively fixedly connected to the first movable plate and the first anti-blocking column. The first spring is located inside the first movable plate. The first anti-blocking column is slidably connected to the first movable plate, and the end of the first anti-blocking column away from the first spring is spherical.

2. The controlled frequency conversion device according to claim 1, characterized in that the first heat dissipation component further includes a movable bolt and a mounting strip. The mounting strip is provided on both the upper and lower sides of the first heat dissipation fan. The mounting strip is provided with a through hole, and the movable bolt passes through the through hole and is threadedly connected to the frequency conversion cabinet body.

3. The controlled frequency conversion device according to claim 2, characterized in that the mounting strip is provided with a positioning bracket, the positioning bracket is perpendicular to the mounting strip, the frequency conversion cabinet body is provided with a positioning port adapted to the positioning bracket, and the positioning bracket is located inside the positioning groove.

4. The controlled frequency conversion device according to claim 3, characterized in that The controlled frequency conversion device further includes a second heat dissipation component. The frequency conversion cabinet body further has a plurality of third heat dissipation holes. The size of the third heat dissipation holes is the same as the aperture of the first heat dissipation holes, and the third heat dissipation holes and the first heat dissipation holes are arranged in a horizontal offset manner. The distance between any two adjacent longitudinally arranged third heat dissipation holes is the aperture length of the third heat dissipation holes. The second heat dissipation component includes a second heat dissipation fan and a second anti-blocking structure. The second heat dissipation fan is fixedly installed on the other outer side of the frequency conversion cabinet body and is located at the third heat dissipation holes. The second anti-blocking structure includes a second movable plate and a plurality of second anti-blocking units. The second movable plate is provided with a plurality of fourth heat dissipation holes at intervals corresponding to the plurality of third heat dissipation holes. The second movable plate is slidably connected to the frequency conversion cabinet body. One second anti-blocking unit is arranged between any two adjacent longitudinally arranged fourth heat dissipation holes. The second anti-blocking unit includes a second spring and a second anti-blocking column. Two ends of the second spring are respectively fixedly connected to the second movable plate and the second anti-blocking column. The second spring is located inside the second movable plate. The second anti-blocking column is slidably connected to the second movable plate. One end of the second anti-blocking column away from the second spring is spherical in shape.

5. The controlled frequency conversion device according to claim 4, wherein the second heat dissipation component further includes a linkage shaft. One end of the linkage shaft is fixedly connected to the second movable plate, and the other end of the linkage shaft is fixedly connected to the output end of the first telescopic cylinder.

6. A frequency conversion system, comprising the controlled frequency conversion device according to claim 5, wherein it further includes a control module and a temperature monitoring module. The control module is electrically connected to the temperature monitoring module. The control module is used to control the operation of the first telescopic cylinder, and the temperature monitoring module is used to monitor the temperature inside the frequency conversion cabinet body in real time.

Images