CN210572510U

CN210572510U - Handheld transformer transformation ratio group tester

Info

Publication number: CN210572510U
Application number: CN201921406480.6U
Authority: CN
Inventors: 王佳; 吴仕兵; 何海国; 杨海涛
Original assignee: Baoding Lixing Electronic Equipment Co ltd; Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: Baoding Lixing Electronic Equipment Co ltd; Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-19
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a hand-held transformer ratio group tester, which comprises a mainframe plastic shell, a mainframe and a three-phase measurement function module. The three-phase measurement function module is installed inside the mainframe, an upper mainframe support, a lower mainframe support, an upper mainframe support The setting of the main unit rubber sleeve and the lower main unit rubber sleeve provides good shock absorption protection for the main unit. The entire main unit plastic shell can be lifted by the handle, which is convenient to carry. The system power supply is set to a lithium battery power supply structure, which is easy to operate and replace. The relay switching unit is based on The control of the main control CPU is switched to the selected test phase, and then the test phase is output to the test product through the test system wiring terminal. The calculation unit of the central processing unit calculates the result, realizes the blind test function, and accurately performs the variable ratio group test without knowing the connection mode and group of the high and low voltage, and the test accuracy is high.

Description

Handheld transformer transformation ratio group tester

Technical Field

The utility model relates to a transformer transformation ratio group test technical field specifically is a hand-held type transformer transformation ratio group tester.

Background

The transformation ratio measurement is indispensable as a necessary project for transformer handover and maintenance tests, the traditional test instrument has the advantages of single function, heavy volume and low intelligence degree, alternating current power supply is needed when the instrument is used on site, and requirements on site use conditions are high, so that the workload is high, and the efficiency is reduced; some samples may still have the data plate and lose or the unclear condition that can't distinguish, and traditional instrument probably can't be tested, has brought inconvenience for the field usage like this, consequently along with the development of electronic technology, the improvement of integrated circuit technique, the instrument use should also be more and more integrated level high, small and exquisite, light, and intelligent degree is high, so the field urgent need a convenient to carry, and the measuring accuracy is high, can battery powered, and can deal with the tester of various test conditions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hand-held type transformer transformation ratio group is other tester possesses convenient to carry, and the measuring accuracy is high, can battery powered, and can deal with the advantage of various test condition, and the tester function is more single among the can solving prior art, and the volume is heavier, problem that intelligent degree is not high.

In order to achieve the above object, the utility model provides a following technical scheme: a hand-held transformer transformation ratio group tester comprises a host plastic shell, a host and a three-phase measurement function module, wherein the three-phase measurement function module is arranged inside the host, the host plastic shell comprises a plastic shell upper cover and a plastic shell lower cover, the plastic shell upper cover is fixedly connected with the plastic shell lower cover through bolts, the plastic shell upper cover comprises an upper cover plate, a main control CPU, a liquid crystal display screen, a keyboard, a test system wiring terminal, an upper host bracket and an upper host rubber sleeve, the liquid crystal display screen and the keyboard are both electrically connected with the main control CPU, the keyboard is fixedly arranged below the liquid crystal display screen, the liquid crystal display screen is fixedly arranged on the outer wall of the front side of the main control CPU, the side wall of the main control CPU is fixedly provided with a plurality of groups of test system wiring terminals, the main control CPU is fixed on the top of the upper cover plate, the host bracket is welded on the bottom surface, the bottom of the main machine is fixed in the lower cover of the plastic shell; the lower cover of the plastic shell comprises a lower cover plate, a lower host bracket, a lower host rubber sleeve, a system power supply, a relay and a handle, wherein the handle is fixed on the outer wall of the lower cover plate, the lower host bracket is fixedly installed inside the lower cover plate, the lower host bracket is positioned outside the host, the lower host rubber sleeve is fixedly arranged between the host and the lower host bracket, the host is connected with the system power supply through a wire, the system power supply is connected with the power supply through a wire, the output end of the power supply is electrically connected with the relay, and the relay is electrically connected with a master control CPU through a wire.

Preferably, the system power supply is arranged in a lithium battery power supply structure.

Preferably, the three-phase measurement function module comprises an inverter power supply module, an AD sampling conversion module, a relay switching unit, a central processing unit calculation unit and a man-machine interaction unit.

Preferably, the inverter power supply module is connected with the relay switching unit, the relay switching unit is electrically connected with the main control CPU, the main control CPU pass wire is electrically connected with the test system wiring terminal, the test system wiring terminal is connected with the test article, the test system wiring terminal is connected with the AD sampling conversion module, and the AD sampling conversion module is connected with the central processing unit computing unit.

Preferably, the human-computer interaction unit is connected with the liquid crystal display and the keyboard.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this hand-held type transformer transformation ratio group tester, the outside of host computer is surrounded by last host computer support and lower host computer support, and goes up host computer gum cover and down host computer gum cover set up to provide good shock attenuation guard action for the host computer, can mould the shell through the handle and mention whole host computer, conveniently carries.

2. This hand-held type transformer transformation ratio group tester, the system power supply sets up to the lithium cell power supply structure, small in size, and the operation is changed simply.

3. The hand-held transformer transformation ratio group tester can realize a blind test function, namely, the transformation ratio group test can be accurately carried out under the condition that the high-low voltage connection mode and the group are not clear, and the test precision is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the top structure of the plastic case top cover of the present invention;

FIG. 3 is a schematic view of the bottom structure of the plastic case top cover of the present invention;

fig. 4 is a schematic view of the structure of the lower cover of the plastic casing of the present invention;

fig. 5 is a schematic view of the connection between the three-phase measurement function module and the host.

In the figure: 1. a host plastic shell; 11. a plastic shell upper cover; 111. an upper cover plate; 112. a main control CPU; 113. a liquid crystal display screen; 114. a keyboard; 115. a test system wiring terminal; 116. an upper host bracket; 117. mounting a host rubber sleeve; 12. a plastic case lower cover; 121. a lower cover plate; 122. a lower host bracket; 123. a main machine rubber sleeve is arranged; 124. a system power supply; 125. a power supply; 126. a relay; 127. a handle; 2. a host; 3. a three-phase measurement function module; 31. an inverter power supply module; 32. an AD sampling conversion module; 33. a relay switching unit; 34. a central processing unit computing unit; 35. and a man-machine interaction unit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a hand-held type transformer transformation ratio group tester, moulds 1, host computer 2 and three-phase measurement function module 3 including the host computer, and three-phase measurement function module 3 installs in the inside of host computer 2.

Referring to fig. 1, the main unit plastic casing 1 includes a plastic casing upper cover 11 and a plastic casing lower cover 12, and the plastic casing upper cover 11 is fixedly connected to the plastic casing lower cover 12 through bolts.

Referring to fig. 2-3, the plastic case upper cover 11 includes an upper cover plate 111, a main control CPU112, a liquid crystal display 113, a keyboard 114, a test system connection terminal 115, an upper host bracket 116, and an upper host rubber sleeve 117, where the liquid crystal display 113 and the keyboard 114 are both electrically connected to the main control CPU112, the keyboard 114 is fixedly installed below the liquid crystal display 113, the liquid crystal display 113 is fixedly installed on the outer wall of the front side of the main control CPU112, the side wall of the main control CPU112 is fixedly provided with a plurality of sets of test system connection terminals 115, the main control CPU112 is fixed on the top of the upper cover plate 111, the bottom surface of the upper cover plate 111 is welded to the upper host bracket 116, the host rubber sleeve 117 is installed on the inner side of the upper host bracket 116, the upper host rubber sleeve 117 contacts with the top of the.

Referring to fig. 4, the plastic case lower cover 12 includes a lower cover plate 121, a lower host bracket 122, a lower host rubber sleeve 123, a system power supply 124, a power supply 125, a relay 126 and a handle 127, the handle 127 is fixed on an outer wall of the lower cover plate 121, the lower host bracket 122 is fixedly installed inside the lower cover plate 121, the lower host bracket 122 is located outside the host 2, the lower host rubber sleeve 123 is fixedly disposed between the host 2 and the lower host bracket 122, the host 2 is connected with the system power supply 124 through a wire, the system power supply 124 is connected with the power supply 125 through a wire, an output end of the power supply 125 is electrically connected with the relay 126, the relay 126 is electrically connected with the main control CPU112 through a wire, and the system power supply 124 is configured as a lithium battery power.

Referring to fig. 5, the three-phase measurement function module 3 includes an inverter power module 31, an AD sampling conversion module 32, a relay switching unit 33, a central processing unit calculation unit 34, and a human-computer interaction unit 35, the inverter power module 31 is connected to the relay switching unit 33, the connection mode between each module and unit can refer to "a transformer dc resistance and transformer transformation ratio group tester" with application number CN201621248883.9, the relay switching unit 33 is electrically connected to the main control CPU112, the main control CPU112 is electrically connected to a test system connection terminal 115, the test system connection terminal 115 is connected to a test sample, the test system connection terminal 115 is connected to the AD sampling conversion module 32, the AD sampling conversion module 32 is connected to the central processing unit calculation unit 34, and the human-computer interaction unit 35 is connected to the liquid crystal display 113 and the keyboard 114.

The working principle is as follows: the outer side of the main unit 2 is surrounded by the upper main unit support 116 and the lower main unit support 122, and the arrangement of the upper main unit rubber sleeve 117 and the lower main unit rubber sleeve 123 provides a good shock absorption protection effect for the main unit 2, the whole main machine plastic case 1 can be lifted up through the handle 127, the system power supply 124 is set to be a lithium battery power supply structure, the inverter power supply module 31 outputs a three-phase alternating current power supply to the relay switching unit 33, the relay switching unit 33 is electrically connected with the main control CPU112, the main control CPU112 is electrically connected with the relay 126 through a lead, the relay switching unit 33 is switched to a selected test phase according to the control of the main control CPU112, then, the test phase is output to the test piece through the test system connection terminal 115, the test system connection terminal 115 is connected to the AD sampling conversion module 32, the test system connection terminal 115 transmits the signal input by the test piece to the AD sampling conversion module 32, and the test result is finally calculated by the central processing unit calculation unit 34 after analog-to-digital conversion.

In summary, the following steps: the hand-held transformer transformation ratio group tester comprises a main machine 2, an upper main machine support 116 and a lower main machine support 122 which surround the outer side of the main machine 2, an upper main machine rubber sleeve 117 and a lower main machine rubber sleeve 123 which provide good damping protection for the main machine 2, a whole main machine plastic shell 1 can be lifted up through a handle 127, the hand-held transformer transformation ratio group tester is convenient to carry, a system power supply 124 is of a lithium battery power supply structure, the size is small, the operation and the replacement are simple, an inverter power supply module 31 outputs a three-phase alternating current power supply to a relay switching unit 33, the relay switching unit 33 is electrically connected with a main control CPU112, the main control CPU112 is electrically connected with a relay 126 through a conducting wire, the relay switching unit 33 is switched to a selected test phase according to the control of the main control CPU112, then the test phase is output to a test article through a test system wiring terminal 115, the test system wiring terminal 115 is connected with an, after analog-to-digital conversion, the test result is finally calculated by the central processing unit 34, so that a blind test function can be realized, namely, the transformation ratio group test is accurately carried out under the condition that the high-low voltage connection mode and the group are not clear, and the test precision is high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hand-held type transformer transformation ratio group tester, moulds shell (1), host computer (2) and three-phase measurement function module (3) including the host computer, and the inside at host computer (2), its characterized in that are installed in three-phase measurement function module (3): the main unit plastic shell (1) comprises a plastic shell upper cover (11) and a plastic shell lower cover (12), the plastic shell upper cover (11) is fixedly connected with the plastic shell lower cover (12) through bolts, the plastic shell upper cover (11) comprises an upper cover plate (111), a main control CPU (112), a liquid crystal display screen (113), a keyboard (114), a testing system wiring terminal (115), an upper main unit bracket (116) and an upper main unit rubber sleeve (117), the liquid crystal display screen (113) and the keyboard (114) are both electrically connected with the main control CPU (112), the keyboard (114) is fixedly arranged below the liquid crystal display screen (113), the liquid crystal display screen (113) is fixedly arranged on the outer wall of the front side of the main control CPU (112), a plurality of groups of testing system wiring terminals (115) are fixedly arranged on the side wall of the main control CPU (112), the main control CPU (112) is fixed on the top of the upper cover plate (111), the bottom surface of, the inner side of the upper host bracket (116) is provided with an upper host rubber sleeve (117), the upper host rubber sleeve (117) is contacted with the top of the host (2), and the bottom of the host (2) is fixed in the lower cover (12) of the plastic shell; the plastic shell lower cover (12) comprises a lower cover plate (121), a lower host support (122), a lower host rubber sleeve (123), a system power supply (124), a power supply (125), a relay (126) and a handle (127), wherein the handle (127) is fixed on the outer wall of the lower cover plate (121), the lower host support (122) is fixedly installed inside the lower cover plate (121), the lower host support (122) is located on the outer side of a host (2), the lower host rubber sleeve (123) is fixedly arranged between the host (2) and the lower host support (122), the host (2) is connected with the system power supply (124) through a lead, the system power supply (124) is connected with the power supply (125) through a lead, the output end of the power supply (125) is electrically connected with the relay (126), and the relay (126) is electrically connected with a main control CPU (112) through a lead.

2. The hand-held transformer transformation ratio group tester of claim 1, wherein: the system power supply (124) is configured as a lithium battery powered configuration.

3. The hand-held transformer transformation ratio group tester of claim 1, wherein: the three-phase measurement function module (3) comprises an inverter power supply module (31), an AD sampling conversion module (32), a relay switching unit (33), a central processing unit computing unit (34) and a man-machine interaction unit (35).

4. The hand-held transformer transformation ratio group tester as claimed in claim 3, wherein: the inverter power supply module (31) is connected with the relay switching unit (33), the relay switching unit (33) is electrically connected with the main control CPU (112), a pass wire of the main control CPU (112) is electrically connected with the test system wiring terminal (115), the test system wiring terminal (115) is connected with a test sample, the test system wiring terminal (115) is connected with the AD sampling conversion module (32), and the AD sampling conversion module (32) is connected with the central processing unit computing unit (34).

5. The hand-held transformer transformation ratio group tester as claimed in claim 3, wherein: the man-machine interaction unit (35) is connected with the liquid crystal display (113) and the keyboard (114).