A frequency converter testing device

Abstract

The utility model provides a kind of frequency converter testing device, belong to frequency converter testing technical field, to solve the problem of being prone to leading frequency converter to be wrong when removing fault frequency converter, the accuracy of the problem of influencing frequency converter test result, including ageing furnace main body, sealed furnace door, position limiting plate, guiding mounting rod, heat shield and electric push rod;The sealed furnace door is hinged in the front side of the ageing furnace main body;The position limiting plate is slidably connected in the upper portion of the ageing furnace main body;The guiding mounting rod is fixedly connected in the inner side of the ageing furnace main body;The heat shield is slidably connected in the inner side of the guiding mounting rod;The electric push rod bolt connection is in the lower portion of the guiding mounting rod;The utility model avoids the condition that frequency converter is wrong due to confusion frequency converter number, guarantees the accuracy of frequency converter test result.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter testing technology, and more specifically, it relates to a frequency converter testing device. Background Technology

[0002] After the frequency converters are manufactured, they need to be tested for aging performance in an aging furnace. During the test, multiple frequency converters need to be connected to the test circuit of the aging furnace simultaneously via data cables. Through the coordinated action of the heating system, temperature control system, and air-powered constant temperature system, the temperature inside the furnace is raised and stabilized at the set value, simulating the high temperature, high humidity, vibration and other environmental conditions that the product may encounter in actual use. The frequency converters are subjected to long-term operation tests to complete the aging test. The aging furnace can test multiple frequency converters simultaneously. When one frequency converter fails, its test circuit will be disconnected, and the operator can observe the faulty frequency converter number on the control panel.

[0003] For example, CN218524804U discloses an anti-aging test mechanism for frequency converters, including a feed slide, a support frame, an automatic lifting assembly, an aging furnace, and an electrical conduction assembly. A frequency converter positioning carrier is positioned on the support frame, and an automatic lifting assembly is located below the support frame. The automatic lifting assembly includes a lifting plate, a guide post and guide sleeve assembly, a lifting cylinder, and a telescopic lifting assembly. The inner wall of the aging furnace is equipped with semiconductor heating and cooling plates. The electrical conduction assembly includes a docking pin assembly located on the upper surface of the aging furnace and a docking socket assembly located on the frequency converter positioning carrier, electrically connected to the power connection terminal of the frequency converter. This mechanism can provide an environment for performance testing of the frequency converter at different temperatures, so as to determine the temperature range within which the frequency converter can operate normally and stably, and to judge whether it meets design requirements. It can also automatically feed and continuously perform anti-fatigue and anti-aging performance tests, and can also provide a hazard alarm scheme, making it safe and practical.

[0004] Based on the above, when removing a faulty frequency converter for testing, staff need to locate the faulty frequency converter by referring to its serial number, which takes a long time. At the same time, it is easy to mistakenly remove the wrong frequency converter due to negligence, which will affect the accuracy of the frequency converter test results. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a frequency converter testing device. This device solves the problem that when disassembling a faulty frequency converter for testing, the staff needs to match the serial number to find the faulty frequency converter, which takes a long time. In addition, the frequency converter serial number is easily confused due to negligence, leading to the wrong frequency converter being disassembled and affecting the accuracy of the frequency converter test results.

[0006] The purpose and effectiveness of this inverter testing device are achieved through the following specific technical means:

[0007] A frequency converter testing device includes an aging furnace body, a sealed furnace door, a position limiting plate, a blocking structure, a limiting structure, a conveying structure, guide rods, a heat insulation protective cover, and electric push rods. The sealed furnace door is hinged to the front side of the aging furnace body, and a sealing gasket is adhered to the inner side of the sealed furnace door. The position limiting plate is slidably connected to the upper part of the aging furnace body. The blocking structure is located on the front side of the aging furnace body. Multiple guide rods are provided, and the multiple guide rods are evenly distributed and fixedly connected to the inner side of the aging furnace body. Multiple heat insulation protective covers are provided, and the multiple heat insulation protective covers are slidably connected to the inner side of the multiple guide rods. Multiple electric push rods are provided, and the multiple electric push rods are bolted to the lower part of the multiple guide rods, and the piston rods of the multiple electric push rods are fixedly connected to the multiple heat insulation protective covers. The limiting structure is located on the inner side of the aging furnace body. The conveying structure is located on the outer side of the heat insulation protective cover.

[0008] Furthermore, the blocking structure includes a guide mounting base and a limiting electromagnet; the guide mounting base is fixedly connected to the upper part of the aging furnace body; two limiting electromagnets are provided, and the two limiting electromagnets are respectively fixedly connected to the left and right sides of the guide mounting base; the control circuits of the two limiting electromagnets are connected in series with the control circuit of the aging furnace, and the control circuit of the electric push rod is connected in series with the test circuit of the strain gauge.

[0009] Furthermore, the blocking structure also includes a guide connecting rod, a reset elastic element, and a limiting metal block; the guide connecting rod is fixedly connected to the upper part of the position limiting plate, and the guide connecting rod is slidably connected to the guide mounting seat; the position limiting plate is elastically connected to the guide mounting seat through the reset elastic element; two limiting metal blocks are provided, and the two limiting metal blocks are respectively fixedly connected to the left and right sides of the position limiting plate.

[0010] Furthermore, the limiting structure includes a position indicator base plate and a clamping elastic element; multiple position indicator base plates are provided, and the multiple position indicator base plates are evenly distributed and fixedly connected to the inner side of the aging furnace body; multiple clamping elastic elements are provided, and the multiple heat insulation protective covers are elastically connected to the aging furnace body through the multiple clamping elastic elements.

[0011] Furthermore, the limiting structure also includes limiting blocking plates and inverter support rods; multiple limiting blocking plates are provided, and the multiple limiting blocking plates are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates; multiple inverter support rods are provided, and the multiple inverter support rods are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates.

[0012] Furthermore, the conveying structure includes cooling water conveying pipes and smoke extraction pipes; multiple cooling water conveying pipes are provided, each disposed inside the multiple heat-insulating protective covers, and each cooling water conveying pipe is connected to a coolant storage tank, with a conveying pump disposed inside the coolant storage tank; multiple smoke extraction pipes are provided, each fixedly connected to the rear side of the multiple heat-insulating protective covers, and each smoke extraction pipe is fixedly connected to a smoke collection box, with an exhaust fan disposed inside the smoke collection box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention facilitates the limiting of the sealed furnace door by adjusting the position of the position limiting plate, effectively preventing the sealed furnace door from being accidentally opened during testing, reducing safety hazards, and ensuring the safe use of the aging furnace. The heat insulation protective cover automatically shields the faulty frequency converter, making it easier for staff to locate it and avoiding the inconvenience of manually checking the serial numbers, saving considerable time and preventing incorrect frequency converter removal due to confusion in the serial numbers, thus ensuring the accuracy of the frequency converter test results. Simultaneously, it allows the faulty frequency converter to cool down promptly, preventing secondary damage caused by continuous exposure to high temperatures, thus preserving the repair value of the faulty frequency converter. The limiting plate facilitates the determination of the frequency converter's placement position, improving placement efficiency. The frequency converter support rod reduces obstruction at the bottom of the frequency converter, effectively improving its heat dissipation efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation position of the position limiting plate of this utility model.

[0017] Figure 3 This is a schematic diagram showing the installation positions of the guide rod, heat insulation cover, and electric push rod of this utility model.

[0018] Figure 4 This is a schematic diagram showing the positions of the limiting electromagnet and the limiting metal block of this utility model.

[0019] Figure 5This is a structural schematic diagram of the position indicator base plate and the heat insulation protective cover of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Aging furnace body; 101. Position indicator base plate; 102. Limiting baffle plate; 103. Inverter support rod; 104. Guide mounting seat; 105. Limiting electromagnet; 2. Sealed furnace door; 3. Position limiting plate; 301. Guide connecting rod; 302. Reset elastic element; 303. Limiting metal block; 4. Guide mounting rod; 5. Heat insulation protective cover; 501. Clamping elastic element; 502. Cooling water conveying pipe; 503. Smoke extraction pipe; 6. Electric push rod. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Example 1:

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] This utility model provides a frequency converter testing device, including an aging furnace body 1, a sealed furnace door 2, a position limiting plate 3, a blocking structure, guide mounting rods 4, heat insulation protective covers 5, and electric push rods 6. The sealed furnace door 2 is hinged to the front side of the aging furnace body 1, and a sealing gasket is adhered to the inner side of the sealed furnace door 2. The position limiting plate 3 is slidably connected to the upper part of the aging furnace body 1. The blocking structure is set on the front side of the aging furnace body 1. Multiple guide mounting rods 4 are provided, and the multiple guide mounting rods 4 are evenly distributed and fixedly connected to the inner side of the aging furnace body 1. Multiple heat insulation protective covers 5 are provided, and the multiple heat insulation protective covers 5 are slidably connected to the inner side of the multiple guide mounting rods 4. Multiple electric push rods 6 are provided, and the multiple electric push rods 6 are bolted to the lower part of the multiple guide mounting rods 4, and the piston rods of the multiple electric push rods 6 are fixedly connected to the multiple heat insulation protective covers 5.

[0026] The blocking structure includes a guide mounting base 104 and a limiting electromagnet 105. The guide mounting base 104 is fixedly connected to the upper part of the aging furnace body 1. There are two limiting electromagnets 105, which are fixedly connected to the left and right sides of the guide mounting base 104 respectively. The control circuits of the two limiting electromagnets 105 are connected in series with the control circuit of the aging furnace, and the control circuit of the electric push rod 6 is connected in series with the test circuit of the corresponding strain gauge.

[0027] The blocking structure also includes a guide connecting rod 301, a reset elastic element 302, and a limiting metal block 303. The guide connecting rod 301 is fixedly connected to the upper part of the position limiting plate 3, and the guide connecting rod 301 is slidably connected to the guide mounting seat 104. The position limiting plate 3 is elastically connected to the guide mounting seat 104 through the reset elastic element 302. There are two limiting metal blocks 303, and the two limiting metal blocks 303 are fixedly connected to the left and right sides of the position limiting plate 3 respectively.

[0028] The specific usage and function of this embodiment are as follows: When testing the frequency converter, the limit electromagnet 105 is energized to generate magnetic force to attract the limit metal block 303. After being attracted, the limit metal block 303 drives the position limiting plate 3 and the guide connecting rod 301 to slide upward along the guide mounting seat 104. At this time, the sealed furnace door 2 can be opened, and the data line of the frequency converter and the aging furnace body 1 can be connected. At this time, the test circuit of the frequency converter is connected. The electric push rod 6 is energized to push the heat insulation protective cover 5 upward, so that the heat insulation protective cover 5 slides upward along the guide mounting rod 4. At this time, the connected frequency converter can be placed in a suitable position. After all the frequency converters are placed, the sealed furnace door 2 is closed to keep the aging furnace in a sealed state. Then, the control system sends a signal to all test circuits to start the test circuits. At this time, the limit electromagnet 105 is de-energized, and the reset elastic element 302 pushes the position limiting plate 3 downward to block the outside of the sealed furnace door 2. After the test is completed, the test circuit stops working, and the limit electromagnet 105 is energized again to make the position limiting plate 3 slide upward.

[0029] Example 2:

[0030] As attached Figure 3 To be continued Figure 5 As shown:

[0031] Based on Embodiment 1, it also includes a limiting structure and a conveying structure; the limiting structure is located inside the aging furnace body 1; the conveying structure is located outside the heat insulation protective cover 5.

[0032] The limiting structure includes a position indicator base plate 101 and a clamping elastic element 501; multiple position indicator base plates 101 are provided, and multiple position indicator base plates 101 are evenly distributed and fixedly connected to the inner side of the aging furnace body 1; multiple clamping elastic elements 501 are provided, and multiple heat insulation protective covers 5 are elastically connected to the aging furnace body 1 through multiple clamping elastic elements 501.

[0033] The limiting structure also includes a limiting baffle plate 102 and a frequency converter support rod 103; multiple limiting baffle plates 102 are provided, and multiple limiting baffle plates 102 are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates 101; multiple frequency converter support rods 103 are provided, and multiple frequency converter support rods 103 are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates 101.

[0034] The conveying structure includes cooling water conveying pipes 502 and smoke extraction pipes 503. Multiple cooling water conveying pipes 502 are provided, and the multiple cooling water conveying pipes 502 are respectively located inside multiple heat insulation protective covers 5. The multiple cooling water conveying pipes 502 are all connected to a coolant storage tank, and a conveying pump is provided inside the coolant storage tank. Multiple smoke extraction pipes 503 are provided, and the multiple smoke extraction pipes 503 are respectively fixedly connected to the rear side of multiple heat insulation protective covers 5. The multiple smoke extraction pipes 503 are all fixedly connected to a smoke collection box, and an exhaust fan is provided inside the smoke collection box.

[0035] The specific usage and function of this embodiment are as follows: After the heat insulation cover 5 slides upward, the position indicator base plate 101 is exposed. At this time, the frequency converter can be placed inside the limit block plate 102. The frequency converter support rod 103 can support the frequency converter. After the frequency converter malfunctions, the test circuit is disconnected and the electric push rod 6 is de-energized. At this time, the pressing elastic element 501 will push the heat insulation cover 5 downward, so that the heat insulation cover 5 blocks the outside of the faulty frequency converter. The cooling water delivery pipe 502 can cool down the faulty frequency converter inside the heat insulation cover 5. The smoke extraction pipe 503 can extract the high temperature air inside the heat insulation cover 5, and at the same time, it can also extract the smoke generated by the faulty frequency converter.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0038] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0039] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A frequency converter testing device, comprising an aging furnace body (1), a sealed furnace door (2), a position limiting plate (3), a blocking structure, a limiting structure, a conveying structure, a guide mounting rod (4), a heat insulation protective cover (5), and an electric push rod (6); the sealed furnace door (2) is hinged to the front side of the aging furnace body (1), and a sealing gasket is adhered to the inner side of the sealed furnace door (2); the position limiting plate (3) is slidably connected to the upper part of the aging furnace body (1); characterized in that: The blocking structure is located on the front side of the aging furnace body (1); multiple guide mounting rods (4) are provided, and multiple guide mounting rods (4) are evenly distributed and fixedly connected to the inner side of the aging furnace body (1); multiple heat insulation protective covers (5) are provided, and multiple heat insulation protective covers (5) are slidably connected to the inner side of multiple guide mounting rods (4) respectively; multiple electric push rods (6) are provided, and multiple electric push rods (6) are bolted to the lower part of multiple guide mounting rods (4), and the piston rods of multiple electric push rods (6) are fixedly connected to multiple heat insulation protective covers (5) respectively; the limiting structure is located on the inner side of the aging furnace body (1); the conveying structure is located on the outer side of the heat insulation protective cover (5).

2. The inverter testing device as described in claim 1, characterized in that: The blocking structure includes a guide mounting base (104) and a limiting electromagnet (105); the guide mounting base (104) is fixedly connected to the upper part of the aging furnace body (1); there are two limiting electromagnets (105), and the two limiting electromagnets (105) are respectively fixedly connected to the left and right sides of the guide mounting base (104); the control circuits of the two limiting electromagnets (105) are connected in series with the control circuit of the aging furnace, and the control circuit of the electric push rod (6) is connected in series with the test circuit of the strain gauge.

3. The inverter testing device as described in claim 2, characterized in that: The blocking structure also includes a guide connecting rod (301), a reset elastic element (302), and a limiting metal block (303); the guide connecting rod (301) is fixedly connected to the upper part of the position limiting plate (3), and the guide connecting rod (301) is slidably connected to the guide mounting seat (104) up and down; the position limiting plate (3) is elastically connected to the guide mounting seat (104) through the reset elastic element (302); there are two limiting metal blocks (303), and the two limiting metal blocks (303) are fixedly connected to the left and right sides of the position limiting plate (3) respectively.

4. The inverter testing device as described in claim 1, characterized in that: The limiting structure includes a position indicator base plate (101) and a clamping elastic element (501); multiple position indicator base plates (101) are provided, and multiple position indicator base plates (101) are evenly distributed and fixedly connected to the inner side of the aging furnace body (1); multiple clamping elastic elements (501) are provided, and multiple heat insulation protective covers (5) are elastically connected to the aging furnace body (1) through multiple clamping elastic elements (501).

5. The inverter testing device as described in claim 4, characterized in that: The limiting structure also includes a limiting baffle plate (102) and a frequency converter support rod (103); multiple limiting baffle plates (102) are provided, and multiple limiting baffle plates (102) are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates (101); multiple frequency converter support rods (103) are provided, and multiple frequency converter support rods (103) are evenly distributed and fixedly connected to the upper part of multiple position indicator base plates (101).

6. The inverter testing device as described in claim 1, characterized in that: The conveying structure includes a cooling water conveying pipe (502) and a smoke extraction pipe (503); multiple cooling water conveying pipes (502) are provided, and multiple cooling water conveying pipes (502) are respectively provided inside multiple heat insulation protective covers (5), and multiple cooling water conveying pipes (502) are connected to a coolant storage tank, and a conveying pump is provided inside the coolant storage tank; multiple smoke extraction pipes (503) are provided, and multiple smoke extraction pipes (503) are respectively fixedly connected to the rear side of multiple heat insulation protective covers (5), and multiple smoke extraction pipes (503) are fixedly connected to a smoke collection box, and an exhaust fan is provided inside the smoke collection box.

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