Static var generator with temperature measurement function

Abstract

The utility model provides a static var generator with a temperature measurement function, which belongs to the technical field of power electronic equipment and comprises a shell, a power device, a fan and a temperature measurement probe. A first baffle and a second baffle which are perpendicular to each other are further installed in the shell, an inner cavity of the shell is divided into a front cavity and a rear cavity through the first baffle, the front cavity is divided into a left cavity and a right cavity through the second baffle, the power device is located in the rear cavity, the fan is located in the left cavity, the left cavity is communicated with the rear cavity, and the fan is located in the right cavity. The air inlet is communicated with the left cavity and right faces the draught fan, the temperature measuring probe is located in the right cavity, and the front panel is provided with a ventilation hole communicated with the right cavity. According to the static var generator with the temperature measurement function provided by the utility model, the fan and the temperature measurement probe are separated by the second baffle plate, so that the influence of the fan on the temperature measurement probe can be avoided, and the accuracy of a measured value of the temperature measurement probe is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power electronic equipment, more specifically, relate to a static var generator with temperature measurement function. BACKGROUND

[0002] Static var generator (SVG, Static Var Generator) is a kind of dynamic reactive compensation device based on power electronic technology, by self-commutated bridge circuit parallel to power grid, the phase and amplitude of regulating ac side output voltage, or directly control ac side current, realize dynamic absorption or emission of reactive power, so as to improve the power factor of power grid, stabilize voltage and inhibit harmonic. Its core is composed of IGBT (Insulated Gate Bipolar Transistor) and other power devices, with fast response and bidirectional continuous regulation capability. Power device is usually installed in the shell, when the ambient temperature outside the shell is too high, the temperature of power device will rise, which will cause its performance degradation or even damage, so it is necessary to install a fan at the air inlet of the shell to cool the power device. In order to match the output power of the fan with the ambient temperature, the ambient temperature needs to be monitored in real time. The existing static var generator directly installs the temperature measurement probe on the fan. But because the fan will also generate heat during operation, the ambient temperature measured by the temperature measurement probe will not be accurate. SUMMARY

[0003] The utility model discloses a static var generator with temperature measurement function, which aims to solve the problem of inaccurate temperature measurement of the temperature measurement probe in the existing static var generator due to direct installation on the fan.

[0004] To achieve the above purpose, the utility model adopts the technical scheme of providing a static var generator with temperature measurement function, comprising: a shell, a power device, a fan and a temperature measurement probe;The shell is surrounded by a U-shaped frame, a front panel, a rear panel and a top plate, the front panel is provided with an air inlet, and the rear panel is provided with an air outlet;The first baffle and the second baffle perpendicular to each other are also installed in the shell, the first baffle separates the inner cavity of the shell into front cavity and rear cavity, the second baffle separates the front cavity into left cavity and right cavity, the power device is located in the rear cavity, the fan is located in the left cavity, the left cavity is communicated with the rear cavity, the air inlet is communicated with the left cavity and faces the fan, the temperature measurement probe is located in the right cavity, and the front panel is provided with a ventilation hole communicated with the right cavity.

[0005] In one possible implementation, the second baffle is provided with a communication hole communicated with the left cavity and the right cavity.

[0006] In a possible implementation, a support plate is detachably mounted on the outer sidewall of the front panel, and the temperature measuring probe is fixedly mounted on the inner side of the support plate.

[0007] In a possible implementation, a mounting groove for accommodating the support plate is formed on the outer sidewall of the front panel, and the depth dimension of the mounting groove is the same as the thickness dimension of the support plate.

[0008] In a possible implementation, a filter screen is mounted at the ventilation hole.

[0009] In a possible implementation, a supporting plate is fixedly mounted on the inner sidewall of the support plate, and the temperature measuring probe is mounted at one end of the supporting plate away from the support plate.

[0010] In a possible implementation, the supporting plate is a V-shaped piece, and a reinforcing rib is arranged at the corner of the supporting plate.

[0011] In a possible implementation, the supporting plate is made of stainless steel.

[0012] In a possible implementation, a magnet is fixedly mounted on the temperature measuring probe, and the temperature measuring probe and the supporting plate are fixedly connected through the magnet.

[0013] In a possible implementation, a positioning groove matched with the magnet is formed on the supporting plate.

[0014] Compared with the prior art, the static var generator with the temperature measuring function has the first baffle and the second baffle installed in the shell, the first baffle divides the inner cavity of the shell into the front cavity and the rear cavity, the second baffle divides the front cavity into the left cavity and the right cavity, the power device is located in the rear cavity, the fan is located in the left cavity, and the temperature measuring probe is located in the right cavity. The air outside enters the left cavity through the air inlet, then enters the rear cavity under the action of the fan to cool the power device, and finally is discharged through the air outlet. The air outside enters the right cavity through the ventilation hole, so that the temperature measuring probe monitors the ambient temperature. Since the second baffle separates the fan and the temperature measuring probe, the influence of the fan on the temperature measuring probe can be avoided, and the accuracy of the measurement value of the temperature measuring probe is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 A three-dimensional structure schematic diagram of the static var generator with temperature measurement function provided in the first embodiment of the present application Figure 1 ;

[0017] Figure 2 A three-dimensional structure schematic diagram of the static var generator with temperature measurement function provided in the first embodiment of the present application (the top plate is hidden) Figure 2 ;

[0018] Figure 3 A zoomed-in view of A in the first embodiment of the present application Figure 2 ;

[0019] Figure 4 A three-dimensional structure schematic diagram of the static var generator with temperature measurement function provided in the first embodiment of the present application (the top plate and the front panel are hidden) Figure 3 ;

[0020] Figure 5 An assembly structure schematic diagram of the front panel (front side) and the temperature measurement probe provided in the second embodiment of the present application Figure 1 ;

[0021] Figure 6 An assembly structure schematic diagram of the front panel (back side) and the temperature measurement probe provided in the second embodiment of the present application Figure 2 ;

[0022] Figure 3 A three-dimensional structure schematic diagram of the front panel (front side) provided in the second embodiment of the present application Figure 8 ;

[0023] Figure 9 A three-dimensional structure schematic diagram of the support plate provided in the second embodiment of the present application

[0024] Figures 1 to 4 A three-dimensional structure schematic diagram of the temperature measurement probe provided in the second embodiment of the present application

[0025] In the diagram: 101, U-shaped frame; 102, front panel; 103, rear panel; 104, top plate; 105, air inlet; 106, air outlet; 107, first baffle; 108, second baffle; 109, rear cavity; 110, left cavity; 111, right cavity; 112, ventilation hole; 113, connecting hole; 114, support plate; 115, clearance hole; 116, mounting groove; 117, filter screen; 118, support plate; 119, reinforcing rib; 120, magnet; 121, positioning groove; 2, power device; 3, fan; 4, temperature probe. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Please refer to the following: Figure 4 This invention provides a static var generator with temperature measurement function. The static var generator with temperature measurement function includes: a housing, a power device 2, a fan 3, and a temperature probe 4; the housing is formed by a U-shaped frame 101, a front panel 102, a rear panel 103, and a top plate 104; the front panel 102 has an air inlet 105, and the rear panel 103 has an air outlet 106; a first baffle 107 and a second baffle 108, perpendicular to each other, are also installed inside the housing. The first baffle 107 divides the inner cavity of the housing... The front cavity is divided into a front cavity and a rear cavity 109. The second baffle 108 divides the front cavity into a left cavity 110 and a right cavity 111. The power device 2 is located in the rear cavity 109, and the fan 3 is located in the left cavity 110. The left cavity 110 is connected to the rear cavity 109. The air inlet 105 is connected to the left cavity 110 and faces the fan 3. The temperature probe 4 is located in the right cavity 111. The front panel 102 has a ventilation hole 112 that communicates with the right cavity 111.

[0028] This embodiment provides a static var generator with temperature measurement function. Compared with the prior art, a first baffle 107 and a second baffle 108 are installed inside the housing. The first baffle 107 divides the inner cavity of the housing into a front cavity and a rear cavity 109, and the second baffle 108 divides the front cavity into a left cavity 110 and a right cavity 111. The power device 2 is located in the rear cavity 109, the fan 3 is located in the left cavity 110, and the temperature probe 4 is located in the right cavity 111. Outside air enters the left cavity 110 through the air inlet 105, and then enters the rear cavity 109 under the action of the fan 3 to dissipate heat from the power device 2, and is finally discharged through the air outlet 106. Outside air enters the right cavity 111 through the ventilation hole 112, thereby enabling the temperature probe 4 to monitor the ambient temperature. Since the second baffle 108 separates the fan 3 and the temperature probe 4, it can avoid the influence of the fan 3 on the temperature probe 4, thereby ensuring the accuracy of the measurement value of the temperature probe 4.

[0029] This structural design gives the entire device excellent heat dissipation performance. First, the fan 3 is located inside the left cavity 110, and the air inlet 105 is connected to and directly faces the fan 3, facilitating the rapid intake of cool outside air. When the fan 3 operates, cool air is drawn into the left cavity 110 through the air inlet 105. Since the left cavity 110 is connected to the rear cavity 109, the cool air can smoothly enter the rear cavity 109 to dissipate heat from the power device 2. Simultaneously, the temperature probe 4 located in the right cavity 111 can monitor the temperature inside the right cavity 111 in real time. Due to the separation effect of the second baffle 108, the temperature environment of the right cavity 111 is relatively independent, allowing for more accurate temperature measurement and providing temperature data reference for the stable operation of the entire device. Furthermore, the shell structure formed by the front panel 102, rear panel 103, top plate 104, and U-shaped frame 101 is structurally robust, providing a reliable mounting foundation for the internal components and effectively protecting them from external interference and physical damage.

[0030] In some embodiments, please refer to Figure 5 The second baffle 108 has a connecting hole 113 that connects the left cavity 110 and the right cavity 111. In this embodiment, the connecting hole 113 is provided on the second baffle 108, thereby realizing the connection between the left cavity 110 and the right cavity 111. Since the fan 3 is located inside the left cavity 110, under the action of the fan 3, the outside air enters the right cavity 111 through the ventilation hole 112 and then enters the left cavity 110 through the connecting hole 113, so that the outside air flows continuously from the ventilation hole 112 into the right cavity 111. Since the airflow is from the right cavity 111 to the left cavity 110, it can prevent the heat in the left cavity 110 from being conducted into the right cavity 111.

[0031] In addition, the inner wall of the right cavity 111 can be covered with heat-insulating material to further reduce the possibility of heat being conducted from the left cavity 110 to the right cavity 111. A special airflow guiding structure can also be set around the connecting hole 113 to make the air flow more smoothly through the connecting hole 113, reduce energy loss during airflow, and thus improve the heat dissipation performance of the entire device.

[0032] In some embodiments, please refer to Figure 6 and Figure 5 A support plate 114 is detachably mounted on the outer wall of the front panel 102. A temperature probe 4 is fixedly mounted on the inner side of the support plate 114. A clearance hole 115 for the temperature probe 4 is provided on the front panel 102, and a ventilation hole 112 is provided on the support plate 114. In this embodiment, the support plate 114 is a flat plate, fixed to the outer wall of the front panel 102 with screws, thus allowing the support plate 114 to be disassembled from the outside of the housing. The temperature probe 4 enters the right cavity 111 through the clearance hole 115 on the front panel 102. Since the temperature probe 4 is fixedly mounted on the inner side of the support plate 114, it can be removed together with the support plate 114 when disassembling. Therefore, it is not necessary to disassemble the front panel 102 and the fan 3 when removing the temperature probe 4 from the housing.

[0033] This design significantly improves the ease of equipment maintenance. During long-term use, the temperature probe 4 may malfunction or require periodic calibration. Traditional equipment structures may require removing the front panel 102 and fan 3 to access the temperature probe 4, which is not only time-consuming and labor-intensive but may also damage other components during disassembly and reinstallation. In this design, however, the temperature probe 4 can be easily removed or installed simply by unscrewing the screws from the outside and removing the support plate 114, greatly shortening maintenance time and reducing maintenance costs. Simultaneously, reducing unnecessary disassembly operations improves the overall stability and reliability of the equipment, minimizing the risk of equipment failure due to frequent disassembly. Furthermore, the ventilation hole 112 is located on the support plate 114, allowing for easy cleaning or inspection of the ventilation hole 112 while disassembling the support plate 114, ensuring the normal operation of the ventilation system and further improving the equipment's performance and lifespan.

[0034] In some embodiments, please refer to Figure 7 and Figure 5 The outer side wall of the front panel 102 is provided with a mounting groove 116 for accommodating the support plate 114. The depth of the mounting groove 116 is the same as the thickness of the support plate 114. In this embodiment, by placing the support plate 114 in the mounting groove 116, the structure can be made more compact, and the outer surface of the support plate 114 can be flush with the outer surface of the front panel 102, thereby improving the aesthetics of the device.

[0035] Furthermore, this design enhances the overall structural strength of the front panel 102. When the equipment is subjected to external impact, the support plate 114 within the mounting groove 116 provides support and cushioning, dispersing the external force and reducing the likelihood of deformation or damage to the front panel 102. Simultaneously, the location and dimensions of the mounting groove 116 are carefully designed to ensure that the support plate 114 will not wobble or shift after installation. This necessitates strict control over the machining precision of the mounting groove 116 and the support plate 114 during production to ensure optimal matching, thereby providing a reliable guarantee for the stable operation and long-term use of the equipment.

[0036] In some embodiments, please refer to Figure 6 and Figure 6 A filter screen 117 is installed at the ventilation hole 112. In this embodiment, the filter screen 117 is installed on the inner surface of the support plate 114 and corresponds to the ventilation hole 112. The filter screen 117 can prevent foreign objects from entering the right cavity 111, thereby protecting the temperature probe 4.

[0037] Furthermore, the filter 117 is made of a special material that not only has excellent filtration performance but also possesses a certain degree of corrosion resistance. Even under harsh environments, it will not be easily corroded or damaged during prolonged use.

[0038] In some embodiments, please refer to Figure 6 A support plate 118 is fixedly installed on the inner wall of the support plate 114, and a temperature probe 4 is installed on the end of the support plate 118 away from the support plate 114. In this embodiment, one end of the support plate 118 is fixedly installed on the inner wall of the support plate 114. The support plate 118 is located inside the right cavity 111. The support plate 118 is located below the ventilation hole 112. The top surface of the support plate 118 is flat. The temperature probe 4 is directly facing the ventilation hole 112, so the outside air will blow directly onto the temperature probe 4 after passing through the ventilation hole 112, thereby improving the measurement accuracy of the temperature probe 4. The temperature probe 4 is fixedly installed on the top surface of the support plate 118 and away from the support plate 114, so a certain distance can be maintained between the temperature probe 4 and the ventilation hole 112 on the support plate 114, avoiding the temperature probe 4 from blocking the ventilation hole 112 and ensuring smooth airflow.

[0039] In some embodiments, please refer to Figure 8 and Figure 6The support plate 118 is a V-shaped component, and reinforcing ribs 119 are provided at its corners. In this embodiment, the support plate 118 is made of angle steel, with right angles at its corners. The support plate 118 is fixedly connected to the support plate 114 by welding. Reinforcing ribs 119 are welded and fixed at the inner corners of the support plate 118. The reinforcing ribs 119 are triangular and perpendicular to two sides of the support plate 118. The reinforcing ribs 119 are used to improve the structural strength of the support plate 118 and prevent the support plate 118 from bending and deforming.

[0040] In practical applications, this support plate 118 structure with reinforcing ribs 119 exhibits excellent performance. Because the reinforcing ribs 119 are perpendicular to both sides of the support plate 118, stress can be evenly distributed across the support plate 118. Even under heavy loads and after prolonged use, the support plate 118 maintains a stable shape.

[0041] Meanwhile, the welding connection between the support plate 118 and the support plate 114 also ensures the overall structural integrity. This welding method undergoes strict process control, guaranteeing the quality of the weld and ensuring that there is virtually no loosening or relative displacement between the support plate 118 and the support plate 114.

[0042] Moreover, the choice of angle steel as a material is quite ingenious. It is not only low in cost and readily available, but also possesses high strength and hardness. The right-angled corner design facilitates the connection and installation of the support plate 118 with other components, allowing it to better adapt to various layout requirements within the overall structure.

[0043] Furthermore, the stability of this support plate 118 structure has been verified in some special working environments, such as high temperature or high humidity environments. The presence of the reinforcing ribs 119 effectively resists the adverse effects that environmental factors may have on the support plate 118, thereby extending the service life of the entire structure.

[0044] In some embodiments, the support plate 118 is made of stainless steel. In this embodiment, stainless steel has high strength, corrosion resistance, and good rust prevention.

[0045] These characteristics enable the support plate 118 to operate stably in a variety of complex environments. For example, in some high-humidity industrial environments, the support plate 118 will not rust due to moisture corrosion, thus ensuring the integrity of its structure and the stability of its function. At the same time, its high strength allows the support plate 118 to withstand significant weight and pressure, playing an important role in applications such as machining or equipment support. Even under long-term external pressure or friction, it is not easily deformed or damaged, extending its service life and reducing replacement costs.

[0046] In some embodiments, please refer toFigure 9 and Figure 8 A magnet 120 is fixedly installed on the temperature probe 4, and the temperature probe 4 and the support plate 118 are attracted and fixed by the magnet 120. In this embodiment, the magnet is fixed to the bottom surface of the temperature probe 4 by adhesive bonding. Since the support plate 118 is made of stainless steel, the temperature probe 4 can be directly attracted to the support plate 118 by the magnet 120.

[0047] This method of fixing the temperature probe 4 using magnet 120 has many advantages. Firstly, it makes the installation and removal of the temperature probe 4 extremely convenient. When maintenance, replacement, or calibration of the temperature probe 4 is required, the operator only needs to apply a little external force to remove the temperature probe 4 from the support plate 118. The operation is simple and quick, requiring no complicated tools. Secondly, this adsorption fixing method also offers a degree of flexibility. If fine adjustments to the position of the temperature probe 4 are needed during use, this can be easily achieved. For example, in special scenarios where high temperature measurement accuracy is required, the optimal measurement position can be found by slightly moving the temperature probe 4, and the magnet 120 adsorption method can well meet this need. Furthermore, this method ensures effective fixing without causing any physical damage to the temperature probe 4 or the support plate 118, thus extending their service life.

[0048] In some embodiments, please refer to Figure 9 and ​ The support plate 118 has a positioning groove 121 that matches the magnet 120. In this embodiment, the outline size of the magnet is smaller than the outline size of the temperature probe 4. By placing the magnet 120 in the positioning groove 121, the temperature probe 4 is prevented from shaking relative to the support plate 118. Since the depth of the positioning groove 121 is greater than or equal to the thickness of the magnet 120, it ensures that the temperature probe 4 is in direct contact with the support plate 118, thereby making the relationship between the temperature probe 4 and the support plate 118 more stable.

[0049] Furthermore, in practical applications, this structural design helps improve measurement accuracy. The stable contact relationship reduces errors caused by vibration or poor contact in the temperature probe 4. Simultaneously, this design maintains good stability even in complex environments, such as those with slight vibration or thermal expansion and contraction due to temperature changes. This stable structure between the support plate 118 and the temperature probe 4 also facilitates equipment maintenance and replacement. If the temperature probe 4 malfunctions and needs replacement, its stable structural layout allows operators to easily disassemble and install a new probe without increasing operational difficulty due to structural complexity or unstable connections between components. This not only improves work efficiency but also reduces maintenance costs.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static var generator with temperature measurement function, comprising: The housing, power device, fan and temperature measuring probe; the housing is surrounded by a U-shaped frame, a front panel, a rear panel and a top plate, the front panel is provided with an air inlet, and the rear panel is provided with an air outlet; characterized in that the housing is further provided with a first baffle and a second baffle perpendicular to each other, the first baffle separates the inner cavity of the housing into a front cavity and a rear cavity, the second baffle separates the front cavity into a left cavity and a right cavity, the power device is located in the rear cavity, the fan is located in the left cavity, the left cavity is communicated with the rear cavity, the air inlet is communicated with the left cavity and faces the fan, and the temperature measuring probe is located in the right cavity, and the front panel is provided with a ventilation hole communicated with the right cavity.

2. The static var generator with temperature measurement function as claimed in claim 1, wherein The second baffle is provided with a communication hole communicated with the left cavity and the right cavity.

3. The static var generator with temperature measurement function as claimed in claim 1, wherein A support plate is detachably mounted on the outer side wall of the front panel, the temperature measuring probe is fixedly mounted on the inner side of the support plate, the front panel is provided with a clearance hole for avoiding the temperature measuring probe, and the ventilation hole is provided on the support plate.

4. The static var generator with temperature measurement function as claimed in claim 3, wherein The outer side wall of the front panel is provided with a mounting groove for accommodating the support plate, and the depth size of the mounting groove is the same as the thickness size of the support plate.

5. The static var generator with temperature measurement function as claimed in claim 3, wherein the temperature sensor is a thermistor. A filter screen is mounted at the ventilation hole.

6. The static var generator with temperature measurement function as claimed in claim 3, wherein A supporting plate is fixedly mounted on the inner side wall of the support plate, and the temperature measuring probe is mounted at one end of the supporting plate away from the support plate.

7. A static var generator with temperature measurement function as claimed in claim 6, wherein the temperature sensor is a thermistor. The supporting plate is a V-shaped piece, and the corner of the supporting plate is provided with a reinforcing rib.

8. The static var generator with temperature measurement function as claimed in claim 6, wherein The supporting plate is made of stainless steel.

9. A static var generator with temperature measurement function as claimed in claim 8, wherein the temperature sensor is a thermistor. A magnet is fixedly mounted on the temperature measuring probe, and the temperature measuring probe and the supporting plate are fixedly connected through the magnet.

10. The static var generator with temperature measurement function as claimed in claim 9, wherein the temperature sensor is a thermistor. The supporting plate is provided with a positioning groove matched with the magnet.

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