CN210376566U

CN210376566U - Intelligent direct-current electrified electrolytic ring instrument

Info

Publication number: CN210376566U
Application number: CN201921313896.3U
Authority: CN
Inventors: 肖竹
Original assignee: Guangzhou Xinhao Electromechanical Equipment Co ltd
Current assignee: Guangzhou Xinhao Electromechanical Equipment Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-04-21
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an intelligence direct current takes electrolytic ring appearance relates to electrolytic ring appearance technical field, this intelligence direct current takes electrolytic ring appearance, including signal collection station, branch road detection instrument and system analysis appearance, signal collection station includes tong-ammeter, torsional spring and protective handle, the inside fixedly connected with torsional spring of tong-ammeter, one side swing joint that the tong-ammeter is close to the torsional spring has protective handle, the one end fixedly connected with data line of tong-ammeter is kept away from to signal collection station, signal collection station's one end fixedly connected with branch road detection instrument is kept away from to the data line, one side of branch road detection instrument is provided with the battery compartment. According to the intelligent direct current electrolytic ring instrument, the imported microcontroller is used as a main system, hardware design strictly follows the relevant standards of electric power and electromagnetic compatibility, a plurality of redundancy modes are adopted inside the intelligent direct current electrolytic ring instrument to ensure the reliability of the intelligent direct current electrolytic ring instrument and equipment to be tested, the measurement accuracy of the intelligent direct current electrolytic ring instrument is improved, the timely maintenance of measurement equipment is ensured, and the working efficiency is effectively improved.

Description

Intelligent direct-current electrified electrolytic ring instrument

Technical Field

The utility model relates to a ring appearance technical field specifically is an intelligence direct current takes ring appearance that separates.

Background

According to the requirement of national power grid countermeasures, a transformer substation of 220KV and above is provided with two sets of direct current systems, and the transformer substation is normally operated in an open loop mode. However, due to factors such as transformation station/construction and reconstruction, overhaul of equipment, misoperation of personnel and the like, a phenomenon that two sets of direct current systems are closed in a wrong way may occur. The voltage state quantity before and after the loop closing is not changed, so that the direct current monitoring device installed in the current station cannot give an alarm to the loop closing. However, the harm of the closed loop of the two sets of direct current systems is obvious, and the system mainly comprises: 1. the sensitivity of the ground fault detection is reduced and the chance of protection malfunction is increased; 2. two sets of direct current systems are caused to alarm the ground fault at the same time: one section of the anode is grounded, and the other section of the cathode is grounded; 3. causing the load to "lose voltage," i.e., no operating power, may cause a related denial of action; 4. the service life of the storage battery is shortened; 5. causing direct current system fire and the like, and the consequences are not good.

The existing loop closing search indirectly reflects the information of two sets of direct current loop closing through other abnormalities. For example, when direct current grounding occurs, both the two direct current systems report a grounding signal, and the direct current systems can be found to have a loop only in the process of pulling a path to search for direct current grounding. The search process is usually performed by pulling a circuit, and the operation of the equipment protection device needs to be stopped for a short time, so that the danger is high and the time is long. The quality requirement on maintenance personnel is high.

In order to detect various looped network faults within a positive looped network, a negative looped network, a two-pole looped network, a heteropolar looped network and 200K omega in real time and realize that the correct alarm rate of the looped network reaches 100%, and meanwhile, under the condition that a direct-current power supply system is not powered off, various looped network faults of the positive pole, the negative pole, the two poles, the heteropolar and less than 200K omega can be searched, and the looped network faults can be safely and reliably removed, an intelligent direct-current electrified ring disassembling instrument is needed and used for thoroughly eliminating the hidden danger of loops in a station, the time of abnormal operation of direct current in the station is greatly shortened, and the capability of a transformer substation for resisting system accidents is greatly improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an intelligence direct current takes electrolytic ring appearance has solved the problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an intelligent DC-band electrolytic ring instrument comprises a signal collector, a branch detector and a system analyzer, the signal collector comprises a clamp meter, a torsional spring and a protective handle, the torsional spring is fixedly connected inside the clamp meter, one side of the clamp meter close to the torsion spring is movably connected with a protective handle, one end of the signal collector far away from the clamp meter is fixedly connected with a data line, a branch detector is fixedly connected at one end of the data line far away from the signal collector, a battery bin is arranged at one side of the branch detector, one end of the branch detecting instrument close to the battery bin is movably connected with a rear end cover, one side of the branch detecting instrument far away from the battery bin is fixedly connected with a liquid crystal display screen, the system analyzer is characterized in that a three-core connecting wire is movably connected to the middle of one side of the system analyzer, a black connecting wire is movably connected to the top of one side, close to the three-core connecting wire, of the system analyzer, and a red connecting wire is movably connected to the bottom of one side, close to the three-core connecting wire, of the system analyzer.

Optionally, the clamp meter is composed of two semicircular clamp blocks, one end of each clamp block of the clamp meter is provided with a clamping groove clamping block matched with the clamp block, the other end of the clamp meter is fixedly connected with a rotating column, and the torsion spring is sleeved in the middle of the rotating column.

Optionally, the protection handle is set to be a square structure, and one end of the protection handle is set to be a smooth arc surface.

Optionally, one end of the data line is fixedly connected with a metal connector, and one end of the metal connector, which is far away from the data line, is provided with an elastic clamping block.

Optionally, a metal interface matched with the metal connector is arranged at the bottom of the branch detecting instrument, a clamping groove matched with the elastic clamping block of the metal connector is formed in the surface of the metal interface at the bottom of the branch detecting instrument, and the aperture of the metal interface at the bottom of the branch detecting instrument is matched with the shaft diameter of the metal connector.

Optionally, one side of the branch detector is fixedly connected with a power key, a function key and a test key, and the top of one side of the branch detector is provided with a power indicator and a work indicator.

Optionally, a three-core interface matched with the three-core connecting wire is arranged on one side of the system analyzer, interfaces matched with the black connecting wire and the red connecting wire are respectively arranged in the system analyzer, and the top surface of the system analyzer is fixedly connected with a liquid crystal display screen.

(III) advantageous effects

The utility model provides an intelligence direct current takes electrolytic ring appearance possesses following beneficial effect:

1. this intelligence DC belt electrolytic ring appearance, on the one hand, the device is through adopting high accuracy direct current clamp meter as signal acquisition unit, voltage sampling adopts the import analog-to-digital conversion chip of high accuracy, it is accurate to improve the measurement of voltage and impedance, on the other hand, the device adopts imported position microcontroller to do the major system, the hardware design strictly follows electric power and the relevant standard of electromagnetic compatibility and goes on, inside adopts many redundant modes to guarantee the reliability of device and equipment under test, improve the accuracy that the device measured, guaranteed the timely maintenance to measuring equipment, the effectual efficiency that improves work.

2. This intelligence DC belt electrolytic ring appearance, on the one hand, branch circuit detection instrument and system analysis appearance all adopt TFT liquid crystal display to supply the user to look over information, easy operation is swift, when realizing the detection to different branch circuits, only need press the start key and can accomplish, the test result shows directly perceived, the multiple display form of test result accessible presents for the user, the measuring result of understanding that can be timely clear, be favorable to in time making effective measure to the measuring result, the efficiency of work is improved, on the other hand, the device adopts microampere level's detection signal cooperation high resolution's direct current detection tong-type ammeter to realize fault detection and location, do not have any influence to DC system, improve measuring accuracy and reliability.

Drawings

Fig. 1 is a schematic structural view of the signal collector of the present invention;

fig. 2 is a schematic view of the cross-sectional structure of the signal collector of the present invention;

FIG. 3 is a schematic diagram of a front view structure of the branch detector of the present invention;

fig. 4 is a schematic diagram of a rear view structure of the branch detector of the present invention;

fig. 5 is a schematic structural diagram of the system analyzer of the present invention;

FIG. 6 is a schematic diagram of the detection principle of the present invention;

fig. 7 is a schematic diagram of a wiring structure of the system analyzer of the present invention.

In the figure: 1-a signal collector, 101-a clamp meter, 102-a torsion spring, 103-a protective handle, 2-a branch detector, 3-a system analyzer, 4-a data line, 5-a battery bin, 6-a rear end cover, 7-a liquid crystal display screen, 8-a three-core connecting line, 9-a black connecting line, 10-a red connecting line and 11-a metal connector.

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.

Referring to fig. 1-7, the present invention provides a technical solution: an intelligent direct current electrolytic ring instrument comprises a signal collector 1, a branch detector 2 and a system analyzer 3, wherein the signal collector 1 comprises a clamp meter 101, a torsion spring 102 and a protective handle 103, the torsion spring 102 is fixedly connected inside the clamp meter 101, one side of the clamp meter 101 close to the torsion spring 102 is movably connected with the protective handle 103, one end of the signal collector 1 far away from the clamp meter 101 is fixedly connected with a data line 4, one end of the data line 4 far away from the signal collector 1 is fixedly connected with the branch detector 2, one side of the branch detector 2 is provided with a battery bin 5, one end of the branch detector 2 close to the battery bin 5 is movably connected with a rear end cover 6, one side of the branch detector 2 far away from the battery bin 5 is fixedly connected with a liquid crystal display 7, the middle part of one side of the system analyzer 3 is movably connected with a three-core connecting wire 8, and the top of the, the bottom of the system analyzer 3 near one side of the three-core connection 8 is movably connected with a red connecting line 10, the clamp meter 101 is composed of two semicircular clamp blocks, one end of each clamp block of the clamp meter 101 is provided with a clamping groove clamping block which is matched with the clamp block, the other end of the clamp meter 101 is fixedly connected with a rotating column, a torsion spring 102 is sleeved in the middle of the rotating column, a protective handle 103 is arranged into a square structure, one end of the protective handle 103 is arranged into a smooth cambered surface, one end of the data line 4 is fixedly connected with a metal connector 11, one end of the metal connector 11, which is far away from the data line 4, is provided with an elastic clamping block, the bottom of the branch detecting instrument 2 is provided with a metal interface which is matched with the metal connector 11, the surface of the metal interface at the bottom of the branch detecting instrument 2 is provided with a clamping groove which is, the top of one side of branch detection instrument 2 is provided with power indicator and work pilot lamp, and one side of system analysis appearance 3 is provided with the three-core interface with 8 looks adaptations of three-core connecting wire, and the interface with the black connecting wire 9 and the interface of red connecting wire 10 looks adaptations are seted up respectively to the inside of 3 one sides of system analysis appearance, and the top surface fixedly connected with liquid crystal display of system analysis appearance 3.

When the three-core connection line socket is used, as shown in fig. 7, one end of the three-core connection line socket is connected to the analyzer three-core socket, one end of the red connection line and one end of the black connection line socket are inserted into the analyzer plug according to the color mark, the power switch is disconnected, the red wire clamp, the black wire clamp and the yellow wire clamp of the three-core line are respectively connected to the anode, the cathode and the ground wire of the bus of the I section, the red clamp of the red connection line is connected to the anode of the bus of the II section, the black clamp of the black connection line is connected to the cathode of the bus of the II section, the detection function of the branch line detector 2 is realized by the power key, the function key and the test key, wherein the power key is the power switch key, the function key selects the required test function item according to the function key, the test key starts the test after selecting the required function, as shown, the detecting instrument and the signal collector can be used for detecting branches with possible looped network faults one by one, and the searching of looped network fault points is finally realized according to the waveform and the direction displayed by the control and measurement instrument.

In summary, when the intelligent dc-band ringfused instrument is used, a user uses the high-precision dc clamp meter 101 as a signal acquisition unit, a high-precision input analog-to-digital conversion chip is used for voltage sampling, so as to improve the accuracy of voltage and impedance measurement, and uses an input 32-bit microcontroller as a main system, the hardware design strictly complies with the relevant standards of electric power and electromagnetic compatibility, the reliability of the instrument and the tested equipment is ensured by adopting a plurality of redundancy modes inside, the measurement accuracy of the instrument is improved, the timely maintenance of the measurement equipment is ensured, the working efficiency is effectively improved, the intelligent dc-band ringfused instrument uses the TFT liquid crystal display screen for the user to check information on the branch detector 2 and the system analyzer 3, the operation is simple and rapid, and the detection on different branches can be completed only by pressing a start key, the test result is displayed intuitively and clearly, the test result can be presented to a user through various display forms, the measured result can be known timely and clearly, effective measures for the test result can be taken timely, the working efficiency is improved, on the other hand, the device adopts microampere-level detection signals to be matched with the high-resolution direct current detection clamp meter 101 to realize fault detection and positioning, no influence is caused on a direct current system, and the accuracy and the reliability of measurement are improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an intelligence direct current takes electrolytic ring appearance, includes signal collection station (1), branch detection instrument (2) and system analysis appearance (3), its characterized in that: the signal collector (1) comprises a clamp meter (101), a torsion spring (102) and a protective handle (103), the torsion spring (102) is fixedly connected inside the clamp meter (101), one side, close to the torsion spring (102), of the clamp meter (101) is movably connected with the protective handle (103), one end, far away from the clamp meter (101), of the signal collector (1) is fixedly connected with a data line (4), one end, far away from the signal collector (1), of the data line (4) is fixedly connected with a branch detector (2), one side of the branch detector (2) is provided with a battery bin (5), one end, close to the battery bin (5), of the branch detector (2) is movably connected with a rear end cover (6), one side, far away from the battery bin (5), of the branch detector (2) is fixedly connected with a liquid crystal display (7), and the middle of one side of the system analyzer (3) is movably connected with, the top of the system analyzer (3) close to one side of the three-core connecting line (8) is movably connected with a black connecting line (9), and the bottom of the system analyzer (3) close to one side of the three-core connecting line (8) is movably connected with a red connecting line (10).

2. The intelligent direct current electrolytic ring instrument according to claim 1, wherein the clamp meter (101) is composed of two semicircular clamp blocks, one end of each clamp block of the clamp meter (101) is provided with a clamping groove clamping block which is matched with the clamp block, the other end of the clamp meter (101) is fixedly connected with a rotating column, and the torsion spring (102) is sleeved in the middle of the rotating column.

3. The intelligent direct current electrolytic ring instrument as claimed in claim 1, wherein the protective handle (103) is configured to be a square structure, and one end of the protective handle (103) is configured to be a smooth arc surface.

4. The intelligent direct current electrolytic ring instrument according to claim 1, wherein one end of the data line (4) is fixedly connected with a metal connector (11), and one end of the metal connector (11) far away from the data line (4) is provided with an elastic clamping block.

5. The intelligent direct current electrolytic ring instrument according to claim 1, wherein a metal interface matched with the metal connector (11) is arranged at the bottom of the branch detecting instrument (2), a clamping groove matched with an elastic clamping block of the metal connector (11) is formed in the surface of the metal interface at the bottom of the branch detecting instrument (2), and the aperture of the metal interface at the bottom of the branch detecting instrument (2) is matched with the shaft diameter of the metal connector (11).

6. The intelligent direct current electrolytic ring instrument according to claim 1, wherein a power key, a function key and a test key are fixedly connected to one side of the branch detecting instrument (2), and a power indicator and a work indicator are arranged at the top of one side of the branch detecting instrument (2).

7. The intelligent direct current electrolytic ring instrument according to claim 1, wherein a three-core interface adapted to a three-core connecting wire (8) is arranged on one side of the system analyzer (3), interfaces adapted to a black connecting wire (9) and a red connecting wire (10) are respectively arranged in one side of the system analyzer (3), and a liquid crystal display screen is fixedly connected to the top surface of the system analyzer (3).