CN210199220U

CN210199220U - Frequency converter fault detection device

Info

Publication number: CN210199220U
Application number: CN201920799567.8U
Authority: CN
Inventors: Yuhua Guan; 管玉华
Original assignee: Nanjing Hezhi Yisheng Intelligent Technology Co Ltd
Current assignee: Nanjing Hezhi Yisheng Intelligent Technology Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-03-27
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a converter fault detection device, including device bottom plate, joint structure, device shell, resistance and rectification unit, one side on device bottom plate top is provided with the device shell, and installs current detector in the inside one side of device shell, the inside second that is provided with of device shell of current detector one side acquires the module, and the second one end that acquires the module is connected with current detector through the second wire, the inside first acquisition module that is provided with of device shell of second acquisition module below, and the one end of first acquisition module is connected with current detector through first wire, first acquisition module and second acquisition module all are fixed with the second spacing groove on keeping away from first acquisition module one side device shell inner wall. The utility model discloses not only realized the quick joint function of detection wire, reduced the circulation value of the inside electric current of detection wire, realized the safeguard function at detection position when detecting moreover.

Description

Frequency converter fault detection device

Technical Field

The utility model relates to a converter technical field specifically is a converter fault detection device.

Background

The frequency converter is known as one of the most promising directions in the fields of power electronics and power transmission, the application of the frequency converter is very wide, the failure probability of a power unit of the frequency converter in production and operation is very high, on-site maintenance and repair can be mostly supported only by after-sales technologies of various manufacturers due to the lack of maintenance technologies and repair equipment, but time and labor are wasted due to the lack of detection and repair technologies and detection tools in on-site maintenance.

The frequency converter fault detection device on the market is various and can basically meet the use requirements of people, but certain defects still exist, and the specific problems are as follows.

(1) When the traditional frequency converter fault detection device is used, detection personnel are generally required to manually connect a detection lead with a frequency converter transmission lead, the safety is not high during operation, and the steps are complicated;

(2) when the traditional frequency converter fault detection device is used, high-voltage current is easy to flow in a detection lead, the lead is easy to bear overload voltage, and the detection of the lead is not facilitated;

(3) when the traditional frequency converter fault detection device is used, a connection detection part is often exposed in the air, the detection process is easily affected adversely, and the safety during detection is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a converter fault detection device to it is inconvenient with the transmission conductor installation to provide converter fault detection device detection wire in solving above-mentioned background art, and the wire is difficult to bear high tension current and detects the problem that the position exposes in the air.

In order to achieve the above object, the utility model provides a following technical scheme: a frequency converter fault detection device comprises a device bottom plate, a clamping structure, a device shell, a resistor and a rectification unit, wherein the device shell is arranged on one side of the top end of the device bottom plate, a current detector is arranged on one side inside the device shell, a second acquisition module is arranged inside the device shell on one side of the current detector, one end of the second acquisition module is connected with the current detector through a second lead, a first acquisition module is arranged inside the device shell below the second acquisition module, one end of the first acquisition module is connected with the current detector through a first lead, a second limiting groove is fixed on the inner wall of the device shell on the side, away from the first acquisition module, of the first acquisition module and the second acquisition module, resistors are arranged inside the second limiting grooves, one end of each resistor is connected with a detection lead, and one end of each detection lead extends to the outside of the device shell, the device bottom plate top of device shell one side is provided with the converter casing, and the inside top of converter casing installs the rectification unit to the converter casing bottom of rectification unit below is provided with the contravariant unit, all be provided with the joint groove on the outer wall of converter casing one side, and be provided with the joint structure on the converter casing outer wall of joint groove one side, be provided with a body on the outer wall of device shell one side, and install control panel on the device shell outer wall of door body one side, and the input of the inside singlechip of control panel and current detector's output electric connection.

Preferably, the inside of joint structure has set gradually soft cardboard, elastic gasket, spring and joint seat, is provided with the joint seat on the outer wall of converter casing one side, and all is provided with soft cardboard on the outer wall of joint seat one side, and soft cardboard is close to and is fixed with elastic gasket on the outer wall of detection wire one side, and installs the spring on the outer wall of soft cardboard bottom, the one end and the joint seat fixed connection of spring.

Preferably, the outer wall of device shell one side is articulated to have the protection casing, and the inside of protection casing all is provided with first spacing groove, and the maximum length in first spacing groove is less than the minimum length of protection casing.

Preferably, one end of the resistor is provided with a left assembly interface, the other side of the resistor is provided with a right assembly interface, the right assembly interface and the left assembly interface are matched with each other, and the outer wall of one side of the right assembly interface and the outer wall of one side of the left assembly interface are sleeved with an insulating sleeve.

Preferably, a groove is fixed on the outer wall of one side of the protective cover, a turnover clamping block is arranged in the groove, and one end of the turnover clamping block is hinged to the outer wall of the protective cover.

Preferably, a direct-current positive bus and a direct-current negative bus are respectively arranged between the rectifying unit and the inverting unit, a high-edge shunting block is installed on the outer wall of the direct-current positive bus, a low-edge shunting block is installed on the outer wall of the direct-current negative bus, and the high-edge shunting block and the low-edge shunting block are connected with the detection lead through transmission leads.

Compared with the prior art, the beneficial effects of the utility model are that: the frequency converter fault detection device not only realizes the quick clamping function of the detection lead, reduces the circulation value of the current in the detection lead, but also realizes the protection function of the detection part during detection;

(1) the flexible clamping plate is pulled, one end of the detection lead is inserted into the clamping groove to be connected with the transmission lead, the elastic gasket protects the outer wall of the detection lead, and the flexible clamping plate is loosened to rebound under the action of the spring to limit the outer wall of the detection lead, so that the rapid clamping function of the detection lead is realized;

(2) the outer wall of the detection lead can be connected with a plurality of resistors to adjust the resistance value of the resistors through the mutual matching of the right assembly interface and the left assembly interface, the insulation sleeve plays an insulation role, and the circulation value of the current in the detection lead is reduced equivalently;

(3) through being provided with protection casing, upset fixture block, recess and first spacing groove, the pulling protection casing makes it closed to with the mutual block of upset fixture block and recess, avoided the testing site to expose in the air, testing site's safeguard function when having realized detecting.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the front view of the present invention;

FIG. 3 is an enlarged schematic view of the clamping structure of the present invention;

fig. 4 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

In the figure: 1. a device chassis; 2. a clamping structure; 201. a soft card board; 202. an elastic pad; 203. a spring; 204. a clamping seat; 3. a frequency converter housing; 4. a first limit groove; 5. a device housing; 6. a second limit groove; 7. a first acquisition module; 8. a first conductive line; 9. a current detector; 10. a second conductive line; 11. a second acquisition module; 12. a resistance; 13. detecting a lead; 14. a protective cover; 15. a direct current positive bus; 16. a rectifying unit; 17. a high-side shunting block; 18. a direct current negative bus; 19. a low-edge shunting block; 20. an inversion unit; 21. a groove; 22. a control panel; 23. a door body; 24. turning over the fixture block; 25. a clamping groove; 26. a right assembly interface; 27. an insulating sleeve; 28. and a left assembly interface.

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.

Referring to fig. 1-4, the present invention provides an embodiment: a frequency converter fault detection device comprises a device bottom plate 1, a clamping structure 2, a device shell 5, a resistor 12 and a rectification unit 16, wherein the device shell 5 is arranged on one side of the top end of the device bottom plate 1, a current detector 9 is arranged on one side inside the device shell 5, the type of the current detector 9 can be 42L6-A, a protective cover 14 is hinged to the outer wall of one side of the device shell 5, and a first limit groove 4 is formed in the protective cover 14;

the maximum length of the first limiting groove 4 is smaller than the minimum length of the protective cover 14 and is used for protection work, a groove 21 is fixed on the outer wall of one side of the protective cover 14, a turning clamping block 24 is arranged inside the groove 21, and one end of the turning clamping block 24 is hinged with the outer wall of the protective cover 14 and is used for closing work of the protective cover 14;

a second acquisition module 11 is arranged in the device shell 5 on one side of the current detector 9, one end of the second acquisition module 11 is connected with the current detector 9 through a second lead 10, a first acquisition module 7 is arranged in the device shell 5 below the second acquisition module 11, and one end of the first acquisition module 7 is connected with the current detector 9 through a first lead 8;

the inner walls of the device shell 5 at one side of the first acquisition module 7 and the second acquisition module 11, which is far away from the first acquisition module 7, are both fixed with second limiting grooves 6, the interiors of the second limiting grooves 6 are both provided with resistors 12, one end of each resistor 12 is provided with a left assembly interface 28, the other side of each resistor 12 is provided with a right assembly interface 26, the right assembly interfaces 26 and the left assembly interfaces 28 are mutually matched, and the outer walls at one sides of the right assembly interfaces 26 and the left assembly interfaces 28 are sleeved with insulating sleeves 27 for splicing the resistors 12;

one end of the resistor 12 is connected with a detection wire 13, one end of the detection wire 13 extends to the outside of the device shell 5, the top end of the device bottom plate 1 at one side of the device shell 5 is provided with a frequency converter shell 3, the top end inside the frequency converter shell 3 is provided with a rectifying unit 16, and the bottom of the frequency converter shell 3 below the rectifying unit 16 is provided with an inverter unit 20;

a direct current positive bus 15 and a direct current negative bus 18 are respectively arranged between the rectifying unit 16 and the inverting unit 20, a high-edge shunt block 17 is arranged on the outer wall of the direct current positive bus 15, a low-edge shunt block 19 is arranged on the outer wall of the direct current negative bus 18, the high-edge shunt block 17 and the low-edge shunt block 19 are both connected with the detection lead 13 through power transmission leads and used for dredging current, a clamping groove 25 is arranged on the outer wall of one side of the frequency converter shell 3, and a clamping structure 2 is arranged on the outer wall of the frequency converter shell 3 on one side of the clamping groove 25;

the clamping structure 2 is internally provided with a soft clamping plate 201, an elastic gasket 202, a spring 203 and a clamping seat 204 in sequence, the outer wall of one side of the frequency converter shell 3 is provided with the clamping seat 204, the outer wall of one side of the clamping seat 204 is provided with the soft clamping plate 201, the outer wall of one side of the soft clamping plate 201 close to the detection lead 13 is fixedly provided with the elastic gasket 202, the outer wall of the bottom of the soft clamping plate 201 is provided with the spring 203, and one end of the spring 203 is fixedly connected with the clamping seat 204;

firstly, a detection person pulls the soft clamping plate 201, inserts one end of the detection lead 13 into the clamping groove 25 and connects the detection lead with the transmission lead, in the process, the elastic gasket 202 protects the outer wall of the detection lead 13, the phenomenon of scratching and breaking is avoided, the soft clamping plate 201 is loosened to enable the soft clamping plate to rebound under the action of the spring 203 to limit the outer wall of the detection lead 13, the rapid clamping work of the detection lead 13 is completed, and the convenience in connection of the detection lead 13 is facilitated;

the outer wall of the device shell 5 on one side is provided with a door body 23, the outer wall of the device shell 5 on one side of the door body 23 is provided with a control panel 22, the model of the control panel 22 can be DL203, and the input end of a single chip microcomputer in the control panel 22 is electrically connected with the output end of the current detector 9.

The working principle is as follows: when the device is used, the device is externally connected with a power supply, a detector firstly pulls the soft clamping plate 201 to insert one end of the detection lead 13 into the clamping groove 25 to be connected with the transmission lead, in the process, the elastic gasket 202 protects the outer wall of the detection lead 13 to avoid the phenomenon of scraping and breaking the skin, the soft clamping plate 201 is loosened to rebound under the action of the spring 203 to limit the outer wall of the detection lead 13, the rapid clamping work of the detection lead 13 is completed, the convenience in connection of the detection lead 13 is facilitated, then the detector pulls the protective cover 14 to close the protective cover, the overturning clamping block 24 is clamped with the groove 21, the protection work of a detection part during detection is completed, the detection process is prevented from being influenced by the outside, and finally, the detector places the resistor 12 into the second limiting groove 6 by opening the door body 23, through mutually supporting of right side equipment interface 26 and left side equipment interface 28 can make and insert a plurality of resistance 12 on the outer wall of detection wire 13 with regulation resistance 12 resistance, and insulating cover 27 plays the insulating effect, the equal inside circulating electric current of detection wire 13 that has reduced, the inside of detecting wire 13 is gone into and is carried to the inside of current detector 9 through second acquisition module 11 and first acquisition module 7 respectively to the electric current in direct current positive bus 15 and the direct current negative bus 18, current detector 9 detects the electric current and will detect numerical value and carry the inside to control panel 22, when the second acquisition module 11 is inconsistent with the inside circulating electric current value of first acquisition module 7, it shows that the converter breaks down, accomplish the work of converter fault detection device.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a converter fault detection device, includes device bottom plate (1), joint structure (2), device shell (5), resistance (12) and rectifier unit (16), its characterized in that: a device shell (5) is arranged on one side of the top end of the device bottom plate (1), a current detector (9) is installed on one side inside the device shell (5), a second acquisition module (11) is arranged inside the device shell (5) on one side of the current detector (9), one end of the second acquisition module (11) is connected with the current detector (9) through a second lead (10), a first acquisition module (7) is arranged inside the device shell (5) below the second acquisition module (11), one end of the first acquisition module (7) is connected with the current detector (9) through a first lead (8), a second limiting groove (6) is fixed on the inner wall of the device shell (5) on the side, far away from the first acquisition module (7), of the first acquisition module (7) by the first acquisition module (7) and the second acquisition module (11), and resistors (12) are arranged inside the second limiting groove (6), one end of the resistor (12) is connected with a detection lead (13), one end of the detection lead (13) extends to the outside of the device shell (5), a frequency converter shell (3) is arranged at the top end of the device bottom plate (1) at one side of the device shell (5), a rectification unit (16) is arranged at the top end inside the frequency converter shell (3), and the bottom of the frequency converter shell (3) below the rectifying unit (16) is provided with an inverter unit (20), the outer wall of one side of the frequency converter shell (3) is provided with a clamping groove (25), and a clamping structure (2) is arranged on the outer wall of the frequency converter shell (3) at one side of the clamping groove (25), a door body (23) is arranged on the outer wall of one side of the device shell (5), and a control panel (22) is arranged on the outer wall of the device shell (5) at one side of the door body (23), and the input end of the singlechip in the control panel (22) is electrically connected with the output end of the current detector (9).

2. The frequency converter fault detection device according to claim 1, characterized in that: the inside of joint structure (2) has set gradually soft cardboard (201), elastic gasket (202), spring (203) and joint seat (204), be provided with joint seat (204) on the outer wall of converter casing (3) one side, and all be provided with soft cardboard (201) on the outer wall of joint seat (204) one side, be fixed with elastic gasket (202) on being close to the outer wall of detecting wire (13) one side soft cardboard (201), and install spring (203) on the outer wall of soft cardboard (201) bottom, the one end and the joint seat (204) fixed connection of spring (203).

3. The frequency converter fault detection device according to claim 1, characterized in that: the device is characterized in that a protective cover (14) is hinged to the outer wall of one side of the device shell (5), a first limiting groove (4) is formed in the protective cover (14), and the maximum length of the first limiting groove (4) is smaller than the minimum length of the protective cover (14).

4. The frequency converter fault detection device according to claim 1, characterized in that: one end of the resistor (12) is provided with a left assembly interface (28), the other side of the resistor (12) is provided with a right assembly interface (26), the right assembly interface (26) is matched with the left assembly interface (28), and an insulating sleeve (27) is sleeved on the outer wall of one side of the right assembly interface (26) and the outer wall of one side of the left assembly interface (28).

5. A frequency converter fault detection device according to claim 3, characterized in that: a groove (21) is fixed on the outer wall of one side of the protective cover (14), a turning clamping block (24) is arranged inside the groove (21), and one end of the turning clamping block (24) is hinged to the outer wall of the protective cover (14).

6. The frequency converter fault detection device according to claim 1, characterized in that: a direct-current positive bus (15) and a direct-current negative bus (18) are respectively arranged between the rectifying unit (16) and the inverting unit (20), a high-edge shunting block (17) is installed on the outer wall of the direct-current positive bus (15), a low-edge shunting block (19) is installed on the outer wall of the direct-current negative bus (18), and the high-edge shunting block (17) and the low-edge shunting block (19) are connected with the detection lead (13) through transmission leads.