A low-temperature working state testing device for a frequency converter

Abstract

The utility model provides a kind of frequency converter low temperature working condition testing device, belong to testing device technical field, to the existing detection device is usually placed into detection box inside frequency converter and tests, but inconveniently positioning frequency converter, it can affect stability when testing, and after placing frequency converter into the box body, inconveniently wiring frequency converter and other problems of work, the utility model is through including box, the top rear of box is rotatably connected with lid, the front right side of box is fixed with fixed block, fixed component is equipped on the fixed block, the top of box and the bottom of lid are all set with compatible wiring port, lifting block is fixedly arranged in the left side of box inner chamber, lifting component is equipped on the right side of lifting block, mounting block is equipped on the right side of lifting component, solve the existing detection device when testing frequency converter is not positioned, and inconveniently wiring frequency converter problem.

Description

Technical Field

[0001] This utility model relates to the technical field of testing devices, specifically to a testing device for the low-temperature operating state of a frequency converter. Background Technology

[0002] Low-temperature resistance testing of frequency converters is conducted to evaluate their performance and reliability in low-temperature environments. In extremely cold regions or applications requiring operation in low-temperature environments, frequency converters need to function normally and maintain stable performance. Low-temperature resistance testing verifies the frequency converter's operating status under low-temperature conditions to ensure it meets design requirements and can reliably withstand cold environments.

[0003] Existing testing equipment typically places the frequency converter inside the testing box for testing, but this makes it inconvenient to position the frequency converter, which may affect stability during testing. Furthermore, placing the frequency converter inside the box makes it difficult to perform tasks such as wiring.

[0004] This utility model proposes a low-temperature operating condition testing device for frequency converters to solve the problems of existing testing devices being inconvenient for locating frequency converters, which may affect stability during testing, and making it inconvenient to perform wiring and other work after placing the frequency converter inside the enclosure. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems in the existing testing devices described in the background art, which typically place the frequency converter inside the testing box for testing. However, this makes it inconvenient to position the frequency converter, may affect stability during testing, and makes it inconvenient to perform wiring and other tasks after placing the frequency converter inside the box.

[0006] Based on the above technical concept, the technical solution adopted by this utility model is as follows: A low-temperature operating condition testing device for a frequency converter includes a housing. A cover is rotatably connected to the top rear of the housing. A fixing block is fixedly mounted on the front right side of the housing, and a fixing component is mounted on the fixing block. Matching wiring ports are provided on the top of the housing and the bottom of the cover. A lifting block is fixedly mounted on the left side of the inner cavity of the housing. A lifting component is located on the right side of the lifting block. A mounting block is located on the right side of the lifting component. A mounting component and a sealing block are located on the top of the mounting block. The lifting component is used to move the mounting block and the sealing block up and down. The mounting component is used to clamp and fix the frequency converter. The sealing block is used to seal the inside of the housing.

[0007] To further define the above technical solution, an observation window is provided at the front of the enclosure, the observation window is made of tempered glass, and the sealing block is made of sealing rubber gasket, so as to facilitate personnel to inspect the inverter inside the enclosure.

[0008] Further defining the above technical solution, a connecting block is fixedly provided on the front right side of the box cover, a connecting plate is fixedly provided on the bottom of the connecting block, a fixing groove is provided on the top of the fixing block, and the connecting plate is inserted into the fixing groove to rotate the box cover.

[0009] Further defining the above technical solution, a fixing rod is inserted into the right side of the fixing block, a fixing slide is fixedly fixed to the left side of the fixing rod, a fixing plate is fixedly fixed to the left side of the fixing slide, a connecting hole adapted to the fixing plate is opened on the connecting plate, the fixing plate is inserted into the connecting hole, a fixing spring is provided on the right side of the fixing slide, the fixing spring is sleeved on the outside of the fixing rod, and a spring groove adapted to the fixing spring is opened in the fixing block to limit and fix the connecting plate.

[0010] Further defining the above technical solution, a temperature gauge is provided on the right side of the box, an air inlet pipe is connected to the top right side of the box and an air inlet valve is provided on the air inlet pipe, and an exhaust pipe is connected to the bottom left side of the box and an exhaust valve is provided on the exhaust pipe to add cold air to the inside of the box.

[0011] Further defining the above technical solution, the lifting block has a lifting groove on its right side, the lifting component includes a lifting screw, the lifting screw is rotatably connected in the lifting groove, a lifting handle is fixedly provided on the top of the lifting screw, a lifting slider is screwed to the outside of the lifting screw, and the right side of the lifting slider is fixedly connected to the mounting block, thereby driving the mounting block to move up and down.

[0012] Further defining the above technical solution, the top of the mounting block is provided with a mounting groove, the mounting component includes a mounting screw, the mounting screw is rotatably connected in the mounting groove, a mounting handle is fixedly provided on the right side of the mounting screw, the mounting screw is a forward and reverse screw, and two sets of mounting sliders are screwed to the outside of the mounting screw, and a clamping plate is fixedly provided on the top of each set of mounting sliders to clamp and fix the frequency converter.

[0013] Further defining the above technical solution, the sealing block has three sets of wiring holes, each set of wiring holes is fitted with a sealing plug, the left side of the sealing block has a sliding groove adapted to the lifting block, and the bottom of the sealing block is fixedly provided with support rods at the four corners, the bottom of the four sets of support rods is fixedly connected to the top of the mounting block to seal the inside of the box.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Highly adaptable: When using, open the cover and turn the lifting handle to remove the mounting block and sealing block from inside the enclosure. Then, place the inverter between the two sets of clamping plates. Turn the mounting handle to move the two sets of clamping plates closer together to clamp and fix the inverter. Thread the wires through the wiring holes and connect them to the inverter. Turn the lifting handle to move the mounting block and sealing block back into the enclosure. The sealing block seals the inside of the enclosure. Thread the wiring through the wiring port, close the cover, and introduce cool air into the enclosure through the air intake pipe. Use a thermometer to check the temperature inside the enclosure to test the inverter. This makes wiring the inverter easier and ensures greater stability during testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a frequency converter low-temperature operating state testing device according to the present invention; Figure 2 This is a schematic diagram of the fixed component structure of a frequency converter low-temperature operating state testing device according to the present invention; Figure 3 This is a front cross-sectional view of the inverter low-temperature operating state testing device of this utility model; Figure 4 This is a schematic diagram of the lifting and mounting components of a frequency converter low-temperature operating state testing device according to the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Box body; 101. Observation window; 102. Thermometer; 103. Air inlet pipe; 1031. Air inlet valve; 104. Exhaust pipe; 1041. Exhaust valve; 2. Box cover; 201. Connecting block; 202. Connecting plate; 203. Connecting hole; 3. Fixing block; 301. Fixing groove; 302. Fixing rod; 303. Fixing slide plate; 304. Fixing plate; 305. Fixing spring; 306. Spring groove; 4. Wiring port; 5. Lifting block; 501. Lifting groove; 502. Lifting screw; 503. Lifting handle; 504. Lifting slider; 6. Mounting block; 601. Mounting groove; 602. Mounting screw; 603. Mounting handle; 604. Mounting slider; 605. Clamping plate; 7. Sealing block; 701. Wiring hole; 702. Sealing plug; 703. Sliding groove; 704. Support rod. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.

[0019] Example 1: This example provides a device for testing the low-temperature operating condition of a frequency converter, such as... Figure 1 As shown, this invention solves the problems of existing testing devices that typically place the frequency converter inside the testing box for testing, which is inconvenient for positioning the frequency converter, may affect stability during testing, and makes wiring and other work difficult after placing the frequency converter inside the box. The invention includes a box 1, with a cover 2 rotatably connected to the top rear of the box 1. A fixing block 3 is fixedly installed on the front right side of the box 1, with fixing components on the fixing block 3. Matching wiring ports 4 are provided on the top of the box 1 and the bottom of the cover 2. A lifting block 5 is fixedly installed on the left side of the inner cavity of the box 1, with a lifting component on the right side of the lifting block 5. A mounting block 6 is located on the right side of the lifting component, with a mounting component and a sealing block 7 on the top of the mounting block 6. The lifting component is used to move the mounting block 6 and the sealing block 7 up and down, the mounting component is used to clamp and fix the frequency converter, and the sealing block 7 is used to seal the inside of the box 1.

[0020] Combination Figures 1-4In this embodiment of the utility model, an observation window 101 is provided at the front of the box body 1. The observation window 101 is made of tempered glass. The sealing block 7 is made of sealing rubber gasket. A connecting block 201 is fixedly provided on the front right side of the box cover 2. A connecting plate 202 is fixedly provided at the bottom of the connecting block 201. A fixing groove 301 is opened at the top of the fixing block 3. The connecting plate 202 is inserted into the fixing groove 301. A fixing rod 302 is inserted on the right side of the fixing block 3. A fixing slide plate 303 is fixedly provided on the left side of the fixing rod 302. A fixing plate 304 is fixedly provided on the left side of the fixing slide plate 303. The connecting plate 202 has a connecting hole 203 that matches the fixing plate 304. The fixing plate 304 is inserted into the connecting hole 203. A fixing spring 305 is provided on the right side of the fixing slide plate 303. The fixing spring 305 is sleeved on the outside of the fixing rod 302. A spring groove 306 that matches the fixing spring 305 is provided in the fixing block 3. A thermometer 102 is provided on the right side of the box 1. An air inlet pipe 103 is connected to the top right side of the box 1. An air inlet valve 1031 is provided on the air inlet pipe 103. An exhaust pipe 104 is connected to the bottom left side of the box 1. An exhaust valve 1041 is provided on the pipe 104. A lifting groove 501 is provided on the right side of the lifting block 5. The lifting component includes a lifting screw 502, which is rotatably connected in the lifting groove 501. A lifting handle 503 is fixedly provided on the top of the lifting screw 502. A lifting slider 504 is screwed to the outside of the lifting screw 502. The right side of the lifting slider 504 is fixedly connected to the mounting block 6. An mounting groove 601 is provided on the top of the mounting block 6. The mounting component includes an mounting screw 602, which is rotatably connected in the mounting groove 601. A mounting handle 603 is fixedly provided on the right side of 02. The mounting screw 602 is a forward and reverse screw. Two sets of mounting sliders 604 are screwed to the outside of the mounting screw 602. A clamping plate 605 is fixedly provided on the top of each set of mounting sliders 604. Three sets of wiring holes 701 are provided on the sealing block 7. A sealing plug 702 is inserted into each of the three sets of wiring holes 701. A sliding groove 703 that matches the lifting block 5 is provided on the left side of the sealing block 7. Support rods 704 are fixedly provided at the four corners of the bottom of the sealing block 7. The bottom of the four sets of support rods 704 are fixedly connected to the top of the mounting block 6.

[0021] When in use, pull the fixing rod 302 to move the fixing plate 304 out of the connecting hole 203, remove the limit on the connecting plate 202, open the box cover 2, and rotate the lifting handle 503 in the forward direction to drive the lifting screw 502 to rotate. The lifting screw 502 is screwed to the lifting slider 504. The lifting slider 504 is a square block and is slidably connected in the lifting groove 501. Under the limit of the lifting groove 501, the lifting slider 504 moves upward, driving the mounting block 6 to move upward, and removing the mounting block 6 and the sealing block 7 from the box 1. Most existing frequency converters are square. The frequency converter is placed between two sets of clamping plates 605. The mounting handle 603 is rotated in the forward direction, which drives the mounting screw 602 to rotate. The mounting screw 602 drives the two sets of mounting sliders 604 to rotate. Both sets of mounting sliders 604 are square blocks and are slidably connected in the mounting groove 601. Under the limit of the mounting groove 601, the mounting screw 602 is a forward and reverse screw, and the two sets of mounting sliders 604 move closer to each other. The two sets of mounting sliders 604 drive the two sets of clamping plates 605 to move closer to each other until the two sets of clamping plates 605 contact the left and right sides of the frequency converter respectively, clamping and fixing the frequency converter. Remove the sealing plug 702, pass the wire through the wiring hole 701 and connect it to the frequency converter. Turn the lifting handle 503 in the opposite direction to move the mounting block 6 downward, and move the frequency converter and sealing block 7 into the cabinet 1. The sealing block 7 seals the inside of the cabinet 1. Pass the wire through the wiring port 4 opened at the top of the cabinet 1, close the cabinet cover 2, and add cold air into the cabinet 1 through the air intake pipe 103. Check the temperature inside the cabinet 1 through the temperature gauge 102. The condition of the frequency converter inside the cabinet 1 can be observed through the observation window 101.

[0022] The input terminals of all electrical equipment in this device are electrically connected to an external power source.

[0023] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A test device for low-temperature operating conditions of frequency converter, comprising a housing (1). Its features are: The top rear of the box (1) is rotatably connected to the box cover (2). A fixing block (3) is fixedly provided on the front right side of the box (1). A fixing component is provided on the fixing block (3). The top of the box (1) and the bottom of the box cover (2) are both provided with matching wiring ports (4). A lifting block (5) is fixedly provided on the left side of the inner cavity of the box (1). A lifting component is provided on the right side of the lifting block (5). An installation block (6) is provided on the right side of the lifting component. An installation component and a sealing block (7) are provided on the top of the installation block (6). The lifting component is used to move the mounting block (6) and the sealing block (7) up and down. The mounting component is used to clamp and fix the frequency converter. The sealing block (7) is used to seal the inside of the housing (1).

2. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: The front of the housing (1) is provided with an observation window (101), which is made of tempered glass, and the sealing block (7) is made of sealing rubber gasket.

3. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: A connecting block (201) is fixedly provided on the front right side of the box cover (2), and a connecting plate (202) is fixedly provided at the bottom of the connecting block (201). A fixing groove (301) is opened on the top of the fixing block (3), and the connecting plate (202) is inserted into the fixing groove (301).

4. The inverter low-temperature operating condition testing device according to claim 3, characterized in that: A fixing rod (302) is inserted into the right side of the fixing block (3), a fixing slide plate (303) is fixedly installed on the left side of the fixing rod (302), a fixing plate (304) is fixedly installed on the left side of the fixing slide plate (303), a connecting hole (203) adapted to the fixing plate (304) is opened on the connecting plate (202), the fixing plate (304) is inserted into the connecting hole (203), a fixing spring (305) is provided on the right side of the fixing slide plate (303), the fixing spring (305) is sleeved on the outside of the fixing rod (302), and a spring groove (306) adapted to the fixing spring (305) is opened in the fixing block (3).

5. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: A thermometer (102) is provided on the right side of the box (1). An air inlet pipe (103) is connected to the top right side of the box (1). An air inlet valve (1031) is provided on the air inlet pipe (103). An exhaust pipe (104) is connected to the bottom left side of the box (1). An exhaust valve (1041) is provided on the exhaust pipe (104).

6. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: The lifting block (5) has a lifting groove (501) on its right side. The lifting component includes a lifting screw (502), which is rotatably connected in the lifting groove (501). A lifting handle (503) is fixedly provided on the top of the lifting screw (502). A lifting slider (504) is screwed to the outside of the lifting screw (502). The right side of the lifting slider (504) is fixedly connected to the mounting block (6).

7. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: The mounting block (6) has a mounting groove (601) on its top. The mounting component includes a mounting screw (602), which is rotatably connected in the mounting groove (601). A mounting handle (603) is fixedly provided on the right side of the mounting screw (602). The mounting screw (602) is a forward and reverse screw. Two sets of mounting sliders (604) are screwed to the outside of the mounting screw (602). A clamping plate (605) is fixedly provided on the top of each set of mounting sliders (604).

8. The inverter low-temperature operating condition testing device according to claim 1, characterized in that: The sealing block (7) has three sets of wiring holes (701), and each of the three sets of wiring holes (701) is fitted with a sealing plug (702). The left side of the sealing block (7) has a sliding groove (703) that is compatible with the lifting block (5). The bottom four corners of the sealing block (7) are all fixedly provided with support rods (704), and the bottoms of the four sets of support rods (704) are all fixedly connected to the top of the mounting block (6).

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