Portable distribution transformer temperature rise test system

Abstract

The invention relates to the technical field of transformer detection, in particular to a portable distribution transformer temperature rise test system. The device comprises a test host, a connecting assembly is installed on the outer surface of the test host, a switching assembly is arranged at the top of the connecting assembly, a communication interface is formed in one side of the switching assembly, three output ports are formed in the back face of the switching assembly, a bus interface is formed in the other side of the switching assembly, and the bus interface is connected with the switching assembly. A connecting cable is inserted into the communication interface, and a short circuit device is inserted into the other end of the connecting cable. The three low-voltage ports on the transformer are connected through the short-circuit device, so that the short-circuit device can be accurately connected to the three low-voltage ports in a butt joint mode, connection of the three low-voltage ports can be more standard, the situation that connection of interfaces is loose or cable connection ports are wrong is avoided, cable arrangement on a test site can be more standard, and the test efficiency is improved. And inaccurate test result detection caused by disordered placement of the cables is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transformer detection, in particular to a portable distribution transformer temperature rise test system. Background Art

[0002] The purpose of transformer temperature rise detection is to determine whether the temperature rise of each part of the transformer is within the allowable range under the specified operating conditions. This is crucial for evaluating the thermal performance of the transformer, ensuring its safe and reliable operation, and extending its service life.

[0003] The current transformer temperature rise test equipment is mostly used in transformer production lines. Its appearance is relatively large and it is difficult to adapt to the distribution network with strong dispersion and high mobility requirements. The transformer temperature rise test generally takes 8 to 10 hours. It is necessary to connect the three-phase test power supply to the high-voltage and low-voltage terminals of the transformer through the line, and carry out the test by changing the output power of the three-phase test power supply.

[0004] When the temperature rise cable is connected, the cable is short-circuited on the transformer connection terminal. During outdoor testing, due to the complex environment, multiple cables connected to different terminals will cause the cable lines to be distributed in a messy manner, which will lead to incorrect or irregular cable connections, and thus cause inaccurate or even wrong test temperature rise data. Therefore, a line connection device that is convenient for portable transformer temperature rise testing is needed. Summary of the invention

[0005] The object of the present invention is to provide a portable distribution transformer temperature rise test system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention aims to provide a portable distribution transformer temperature rise test system, including a test host, a connection component is installed on the outer surface of the test host, a switching component is arranged on the top of the connection component, a communication interface is provided on one side of the switching component, three output ports are provided on the back of the switching component, the output ports are used to connect to the transformer under test, a bus interface is provided on the other side of the switching component, the bus interface is used to connect the test host, a connection cable is plugged into the inside of the communication interface, and a short-circuit device is plugged into the other end of the connection cable for connecting the low-voltage end of the test transformer; Low-voltage adapter ports are provided on both sides of the short-circuit device, and short-circuit adapter cables are plugged into the interiors of the two low-voltage adapter ports. The head ends of the two short-circuit adapter cables are respectively equipped with a first short-circuit end and a third short-circuit end, a quick-clamping piece 1 is fixedly installed on the outer surface of the first short-circuit end, a second short-circuit end is fixedly installed on the front side of the short-circuit device, and a positioning component is provided on the front side of the short-circuit device.

[0007] As a further improvement of the present technical solution, the positioning assembly includes a plug-in interface opened on the front side of the short-circuit device, a limit plate is hinged on the bottom edge of the front side of the short-circuit device, the limit plate covers the outside of the plug-in interface, a threaded hole is opened on the front side of the limit plate, the internal thread of the threaded hole is connected to a support column, the first short-circuit end is plugged into the interior of the plug-in interface, so that the limit plate limits the first short-circuit end for protection.

[0008] As a further improvement of the technical solution, two plug interfaces and limit plates are provided, and the two plug interfaces and limit plates are symmetrically distributed on the front side of the short-circuit device, and are used to limit and protect the first short-circuit end and the third short-circuit end.

[0009] As a further improvement of the technical solution, a handle is fixedly installed on the top of the second short-circuit end, and a second quick-clamping member is fixedly installed on the front of the second short-circuit end.

[0010] As a further improvement of the present technical solution, the connecting assembly includes a connecting plate 1 installed on the outer surface of the test host, a snap-in plate 1 is fixedly installed on the top of the connecting plate 1, a connecting plate 2 is installed on the outer surface of the switching assembly, a snap-in plate 2 is fixedly installed on the bottom of the connecting plate 2, and the snap-in plate 1 and the snap-in plate 2 can be snap-connected and fixed so that the switching assembly is installed on the top of the test host.

[0011] As a further improvement of the technical solution, a mounting block is fixedly installed at the bottom of the connecting plate 1, and a universal wheel is arranged at the bottom of the mounting block. There are four universal wheels located at the bottom of the mounting block for driving the test host to move.

[0012] As a further improvement of the technical solution, a connection port is provided on one side of the test host, and a data interface is provided on the other side of the test host.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the portable distribution transformer temperature rise test system, the three low-voltage ports on the transformer are connected through a short-circuit device, so that the short-circuit device can be accurately connected to the three low-voltage ports, and the connection of the three low-voltage ports can be more standardized, avoiding loose connections at the interface or incorrect cable connection ports. The short-circuit device is used in conjunction with the portable test host to connect the transformer, which can make the cable arrangement at the test site more standardized and avoid inaccurate detection of test results due to messy placement of cables.

[0014] 2. In the portable distribution transformer temperature rise test system, the cables connected to the transformer are controlled by switching components and then transmitted to the test host. The effects of multiple test data can be tested at one time, avoiding the need for staff to connect wires when testing different data on the transformer, and further avoiding cable connection errors.

[0015] 3. In the portable distribution transformer temperature rise test system, the positioning component can make the connection between the short-circuit connector and the transformer port more convenient. When the short-circuit device is not in use, the short-circuit end can be closed for protection to prevent the short-circuit end from being damaged by bumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the communication interface structure of the present invention; Figure 3 It is a schematic diagram of the structure of the short-circuit device of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the short-circuit adapter structure of the present invention; Figure 6 It is a schematic diagram of the structure of the connection assembly of the present invention.

[0017] The meaning of each number in the figure is: 1. Test host; 11. Connection port; 12. Data interface; 2. Connecting assembly; 201. Connecting plate 1; 202. Snap-on plate 1; 203. Connecting plate 2; 204. Snap-on plate 2; 3. Switching component; 31. Communication interface; 32. Output port; 33. Bus interface; 4. Short-circuit device; 41. Low voltage adapter; 42. Short-circuit adapter wire; 43. First short-circuit terminal; 44. Third short-circuit terminal; 45. Quick clamp 1; 46. Second short-circuit terminal; 5. Positioning assembly; 501. Plug interface; 502. Limiting plate; 503. Column; 6. Handle; 7. Quick clamp 2; 8. Mounting block; 81. Universal wheel. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] See also Figure 1-Figure 6 As shown, the purpose of this embodiment is to provide a portable distribution transformer temperature rise test system, including a test host 1, a connection component 2 is installed on the outer surface of the test host 1, a switching component 3 is arranged on the top of the connection component 2, a communication interface 31 is provided on one side of the switching component 3, three output ports 32 are provided on the back of the switching component 3, the output port 32 is used to connect to the transformer under test, a bus interface 33 is provided on the other side of the switching component 3, the bus interface 33 is used to connect to the test host 1, a connecting cable is plugged into the inside of the communication interface 31, and a short-circuit device 4 is plugged into the other end of the connecting cable for connecting the low-voltage end of the test transformer; Low-voltage adapter ports 41 are provided on both sides of the short-circuit device 4, and short-circuit adapter wires 42 are plugged into the two low-voltage adapter ports 41. The head ends of the two short-circuit adapter wires 42 are respectively installed with a first short-circuit end 43 and a third short-circuit end 44, and a quick clamp 45 is fixedly installed on the outer surface of the first short-circuit end 43. The second short-circuit end 46 is fixedly installed on the front of the short-circuit device 4, and a positioning component 5 is provided on the front of the short-circuit device 4.

[0020] Furthermore, the switching component 3 can be placed on the top of the test host 1 through the connecting component 2, so that the switching component 3 can be connected to the short-circuiting device 4 through the communication interface 31, and the short-circuiting device 4 can connect the three low-voltage connection ends in parallel, so that the first short-circuiting end 43, the second short-circuiting end 46 and the third short-circuiting end 44 can directly short-circuit the low-voltage port of the transformer, and the output port 32 can be connected to the test transformer through a cable, so as to perform temperature rise detection on the transformer, and the full set of transformer test items can be completed by connecting the switching component 3 once, avoiding frequent line changes and causing wiring confusion.

[0021] It should be noted that the test host 1 uses a low-frequency power supply to reduce the requirements for power supply capacitance, and speeds up the heating speed by increasing the test current, so as to reduce the size of the power supply and facilitate portability. The switching component 3 can control each connection cable by setting modules and programs inside, so that a full set of transformer test items can be completed in one wiring. The internal line connection between the test host 1 and the switching component 3 is a prior art, and its working principle is common knowledge of the staff in this field, and will not be repeated here.

[0022] First, consider how to connect the multiple low-voltage ports on the test transformer. Figure 1-Figure 5 , the specific structure of the positioning component 5 is disclosed. The positioning component 5 includes a plug-in interface 501 opened on the front side of the short-circuit device 4. A limiting plate 502 is hinged on the bottom edge of the front side of the short-circuit device 4. The limiting plate 502 covers the outside of the plug-in interface 501. A threaded hole is opened on the front side of the limiting plate 502. The internal thread of the threaded hole is connected with a stop column 503. The first short-circuit end 43 is plugged into the inside of the plug-in interface 501, so that the limiting plate 502 limits the first short-circuit end 43 for protection.

[0023] There are two plug-in ports 501 and two limit plates 502, which are symmetrically distributed on the front of the short-circuit device 4 and are used to limit and protect the first short-circuit end 43 and the third short-circuit end 44. A handle 6 is fixedly installed on the top of the second short-circuit end 46, and a quick clamp 7 is fixedly installed on the front of the second short-circuit end 46.

[0024] Furthermore, through the installation interface provided on the back of the short-circuit device 4, the communication interface 31 on the switching component 3 can be connected to the short-circuit device 4 through a connecting cable, and then low-voltage adapter interfaces 41 are provided on both sides of the short-circuit device 4, so that the first short-circuit terminal 43 and the third short-circuit terminal 44 are connected to the inside of the short-circuit device 4 through the short-circuit adapter cable 42, and a second short-circuit terminal 46 is also installed on the front of the short-circuit device 4, so that the three short-circuit terminals can be connected to the switching device through the installation interface on the back of the short-circuit device 4. The short-circuit device 4 combines the first short-circuit terminal 43, the second short-circuit terminal 46 and the third short-circuit terminal 44, which can avoid the situation of cluttered lines; When connecting the low-voltage port of the test transformer, the staff member holds the handle 6 and presses the second short-circuit end 46 against the side of the low-voltage port in the middle of the transformer. After accurate positioning, press the quick clamp 2 7 downwards, fit the low-voltage end bayonet of the transformer with the second short-circuit end 46 against the column 503 for connection, and install the short-circuit device 4 on the low-voltage port of the transformer, so that the first short-circuit end 43 and the second short-circuit end 46 on both sides of the short-circuit device 4 correspond to the remaining two low-voltage ports of the transformer, move the first short-circuit end 43 or the second short-circuit end 46 again to fit on the side of the low-voltage port, press the quick clamp 1 45 downwards to connect them, so that the short-circuit device 4 merges and connects the short-circuit connection lines to avoid cluttered lines, and after the short-circuit device 4 is against the low-voltage port, the three short-circuit ends correspond to the low-voltage port one by one, which can avoid the situation where the staff member connects the wrong port, and the quick clamp 1 45 and the quick clamp 2 7 can prevent the staff from contacting the transformer, and the short-circuit ends can be directly connected, which is safer and more efficient. When the short-circuit device 4 is not in use, the first short-circuit end 43 and the second short-circuit end 46 on both sides can be plugged into the inside of the plug-in port 501, and the first short-circuit end 43 and the second short-circuit end 46 are closed and protected by the closing limit plate 502 to prevent the short-circuit ends from being bumped; It should be noted that the first short-circuit end 43, the second short-circuit end 46 and the third short-circuit end 44 are steel plate components that can connect the low-pressure port, and the quick clamp 45 and the quick clamp 7 are mechanical components that can quickly realize the connection, fixing or clamping functions. The internal structure connection is the existing technology, and its working principle is the common knowledge of the staff in this field, and it will not be repeated here.

[0025] Secondly, considering the problem of how to connect and place the test host 1 and the switching component 3, show Figure 6 , the specific structure of the connection component 2 is disclosed, the connection component 2 includes a connection plate 201 installed on the outer surface of the test host 1, a clamping plate 202 is fixedly installed on the top of the connection plate 201, a connection plate 203 is installed on the outer surface of the switching component 3, and a clamping plate 204 is fixedly installed on the bottom of the connection plate 203. The clamping plate 202 and the clamping plate 204 can be clamped and fixed, so that the switching component 3 is installed on the top of the test host 1.

[0026] A mounting block 8 is fixedly mounted on the bottom of the connecting plate 1 201 , and a universal wheel 81 is arranged at the bottom of the mounting block 8 . There are four universal wheels 81 at the bottom of the mounting block 8 for driving the test host 1 to move.

[0027] Furthermore, by installing a connecting plate 201 on the four sides of the outer surface of the test host 1, and fixing a snap-in plate 202 on the top connecting plate, a connecting plate 203 is also installed on the outer surface of the switching component 3, so that the switching component 3 can be placed on the top of the test host 1, and then the snap-in plate 202 can be snap-connected with the snap-in plate 204, so that the switching component 3 can be placed on the top of the test host 1, and with the help of the universal wheel 81 at the bottom of the test host 1, they can be moved together, thereby achieving the effect of facilitating the carrying and movement of the experimental main body.

[0028] Finally, considering the problem of how to connect the test host 1 and the switching component 3, the following is shown. Figure 1 and Figure 2 A connection port 11 is provided on one side of the test host 1, and a data interface 12 is provided on the other side of the test host 1. Furthermore, through the connection port 11 opened on the outside of the test host 1, the bus interface 33 on the outside of the switching component 3 can be connected to the test host 1 through a cable, thereby connecting the transformer, and the test host 1 can be connected to the computer through the data interface 12 to receive the temperature rise test data.

[0029] In summary, the working principle of this scheme is as follows: When the temperature rise test is performed on the test transformer, the bus interface 33 is connected to the connection port 11 through a cable, the switching component 3 is connected to the test host 1, and the communication interface 31 is connected to the short-circuit device 4 through a cable again. The second short-circuit end 46 on the front of the short-circuit device 4 is pressed against the low-voltage port of the transformer by holding the handle 6, and the second quick clamp 7 is pressed to connect the second short-circuit end 46 with the low-voltage port, so that the first short-circuit end 43 and the third short-circuit end 44 on both sides of the short-circuit device 4 are located on both sides of the low-voltage port of the transformer, and the low-voltage ports on both sides of the low-voltage port can be docked. The first short-circuit end 43 and the third short-circuit end 44 are connected to the low-voltage port again through the quick clamp 1 45, so that the three short-circuit ends are connected to the three low-voltage ports on the top of the transformer through the short-circuit device 4, which can avoid the situation of messy cables or disordered connections, and the quick clamp can prevent the staff from touching the low-voltage port of the transformer, which is safer; When the short-circuit device 4 is not in use, the first short-circuit end 43 and the third short-circuit end 44 can be plugged into the plug interface 501, and the first short-circuit end 43 and the second short-circuit end 46 can be stored and protected by closing the limiting plate 502 to prevent the short-circuit device 4 from being bumped.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable distribution transformer temperature rise test system, comprising a test host (1), a connection component (2) being installed on the outer surface of the test host (1), a switching component (3) being arranged on the top of the connection component (2), a communication interface (31) being provided on one side of the switching component (3), three output ports (32) being provided on the back side of the switching component (3), the output ports (32) being used to connect to a transformer under test, a bus interface (33) being provided on the other side of the switching component (3), the bus interface (33) being used to connect to the test host (1), and characterized in that: A connecting cable is plugged into the interior of the communication interface (31), and a short-circuiting device (4) is plugged into the other end of the connecting cable for connecting the low-voltage end of the test transformer; Low-voltage transfer ports (41) are provided on both sides of the short-circuit device (4), short-circuit transfer wires (42) are plugged into the interiors of the two low-voltage transfer ports (41), the head ends of the two short-circuit transfer wires (42) are respectively installed with a first short-circuit end (43) and a third short-circuit end (44), a quick-clamping piece (45) is fixedly installed on the outer surface of the first short-circuit end (43), a second short-circuit end (46) is fixedly installed on the front of the short-circuit device (4), and a positioning assembly (5) is provided on the front of the short-circuit device (4).

2. The portable distribution transformer temperature rise test system according to claim 1 is characterized in that: The positioning assembly (5) comprises an insertion port (501) provided on the front side of the short-circuit device (4); a limiting plate (502) is hingedly connected to the bottom edge of the front side of the short-circuit device (4); the limiting plate (502) covers the outside of the insertion port (501); a threaded hole is provided on the front side of the limiting plate (502); a support column (503) is connected to the inner thread of the threaded hole; the first short-circuit end (43) is inserted into the interior of the insertion port (501), so that the limiting plate (502) limits the first short-circuit end (43) for protection.

3. The portable distribution transformer temperature rise test system according to claim 2 is characterized in that: Two of the plug interfaces (501) and the limiting plates (502) are provided, and the two plug interfaces (501) and the limiting plates (502) are symmetrically distributed on the front side of the short-circuit device (4) and are used to provide limiting protection for the first short-circuit end (43) and the third short-circuit end (44).

4. The portable distribution transformer temperature rise test system according to claim 1 is characterized in that: A handle (6) is fixedly mounted on the top of the second short-circuit end (46), and a second quick-clamping member (7) is fixedly mounted on the front of the second short-circuit end (46).

5. The portable distribution transformer temperature rise test system according to claim 1 is characterized in that: The connection assembly (2) comprises a connection plate 1 (201) mounted on the outer surface of the test host (1), a snap-in plate 1 (202) being fixedly mounted on the top of the connection plate 1 (201), a connection plate 2 (203) being mounted on the outer surface of the switching assembly (3), a snap-in plate 2 (204) being fixedly mounted on the bottom of the connection plate 2 (203), and the snap-in plate 1 (202) and the snap-in plate 2 (204) being snap-in fixedly mounted, so that the switching assembly (3) is mounted on the top of the test host (1).

6. The portable distribution transformer temperature rise test system according to claim 5 is characterized in that: A mounting block (8) is fixedly mounted on the bottom of the first connecting plate (201), and a universal wheel (81) is arranged at the bottom of the mounting block (8). Four universal wheels (81) are arranged at the bottom of the mounting block (8) and are used to drive the test host (1) to move.

7. The portable distribution transformer temperature rise test system according to claim 1 is characterized in that: A connection port (11) is provided on one side of the test host (1), and a data interface (12) is provided on the other side of the test host (1).

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