CN220419533U - City rail contact net circuit parameter test circuit and device - Google Patents
City rail contact net circuit parameter test circuit and device Download PDFInfo
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- CN220419533U CN220419533U CN202321378214.3U CN202321378214U CN220419533U CN 220419533 U CN220419533 U CN 220419533U CN 202321378214 U CN202321378214 U CN 202321378214U CN 220419533 U CN220419533 U CN 220419533U
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000005070 sampling Methods 0.000 claims abstract description 25
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- 230000005611 electricity Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
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Abstract
The utility model discloses a circuit and a device for testing line parameters of a urban rail contact network, relates to the technical field of urban rail transit, and aims to solve the problem that the conventional short circuit experimental device cannot be directly applied to a subway contact network; the utility model comprises a power supply component, an acquisition component and a control display component which are electrically connected, wherein the power supply component is used for providing a direct current power supply, the acquisition component is used for testing a loop, controlling the electrifying time, synchronously sampling and uploading data acquired by sampling, and the control display component is used for controlling electrifying, storing and displaying the acquired data; the utility model utilizes the power supply component to generate a low-voltage direct current power supply to directly connect the contact net and the steel rail to form a closed loop, the acquisition component is responsible for sampling and uploading the voltage and the current on the return flow of the contact net and the steel rail, and the control and display component is used for controlling the triggering time of the generation signal and the duration time of the pulse signal and receiving and storing sampling data.
Description
Technical Field
The utility model relates to the technical field of urban rail transit, in particular to a circuit and a device for testing circuit parameters of urban rail contact networks.
Background
The subway short-circuit test mode mainly has the following problems: (1) The test equipment has the advantages of multiple types, large quantity, high price of main equipment and easy damage. (2) The personnel configuration needs close cooperation of multiple departments, and the personnel involved are multiple, and the labor and time are wasted. (3) The direct-current screen cabinet short-circuit discharge directly burns out equipment, personnel safety is easily threatened, and potential safety hazards exist. (4) Main equipment such as contact net, isolator, high-voltage screen cabinet ages, influences life.
In the aspect of related special testing instruments, the device mainly comprises a transformer alternating current impedance tester, a transformer direct current resistance tester and a three-phase alternating current impedance tester, and is used for measuring related parameters of a transformer and a three-phase line. The three testers are special equipment for testing customized scenes, are difficult to be directly applied to subway contact net systems, and are huge in size and light in weight, so that a plurality of difficulties are brought to installation and debugging.
The existing railway traction power supply short circuit test device takes a DSP digital signal processor as an inner core, effectively avoids interference of power frequency alternating current signals in a different-frequency power supply weighting mode, can effectively measure line impedance of a high-speed railway contact net, and has certain innovation and practicability. But because the power supply systems are different, the power supply system is difficult to be directly applied to a direct current subway contact net system, and meanwhile, the equipment is large in size and light in weight, and becomes a hindrance to popularization.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a circuit and a device for testing the line parameters of the urban rail contact network, and aims to solve the problem that the conventional short circuit experimental device cannot be directly applied to the subway contact network.
The utility model provides a city rail contact net circuit parameter test circuit, includes power supply unit, collection subassembly and the control show subassembly that the electricity is connected, power supply unit for provide DC power supply, collection subassembly is used for test circuit, control switch-on time, synchronous sampling and with the data upload that the sampling obtained, the control show subassembly is used for controlling the switch-on and preserve and demonstrate and gather data, the control show subassembly includes voltmeter, ampere meter, industrial computer and trigger button.
Preferably, the power supply assembly comprises a power supply module, a control transformer, a bridge rectifier circuit and an RC circuit which are sequentially connected, wherein the anode and the cathode of the RC circuit are respectively connected with a tested circuit and the ground through red and black lines through a relay.
Preferably, the collection subassembly includes circular telegram time delay module, high-speed AD collector and current sampling isolator, and wherein circular telegram time delay module, high-speed AD collector and current sampling isolator's power end all is connected with power module's output, circular telegram time delay module input is connected with control show subassembly, and the output is connected with the relay, high-speed AD collector input is connected with RC circuit and current sampling isolator respectively, and the output is connected with control show subassembly.
Preferably, the voltmeter and the ammeter are both connected with the red and black lines, the data transmission port of the industrial personal computer is connected with the output of the high-speed AD collector through a USB bus, one end of the trigger button is connected with the output end of the power module, and the other end of the trigger button is connected with the power end of the high-speed AD collector and the power end of the power-on delay module respectively.
Preferably, the RC circuit is a branch circuit in which capacitors C1, C2 and C3 are connected in parallel to form a large capacitor and then connected in series with resistors R1 and R2.
Preferably, the current sampling isolator is connected with the shunt in parallel through 1 and 2 pins.
Preferably, the control display assembly is provided with a plurality of binding posts, and the binding posts are respectively connected with the red and black lines.
The utility model provides a city rail contact net circuit parameter testing device, is equipped with box and lid, box one side is articulated with lid one side, box upper portion is equipped with places the board, be equipped with a city rail contact net circuit parameter testing circuit in the box, wherein power supply unit, collection subassembly locate the bottom half, control show subassembly embedding is placed on the board.
Preferably, the box body is also internally provided with a power adapter, the control display assembly is also provided with a power socket and a ship-shaped switch, and the power adapter, the power socket and the ship-shaped switch are electrically connected in sequence.
Preferably, the other side of the box body is detachably connected with the other side of the cover body through a lock catch, and a plurality of handles are arranged on the box body.
The beneficial effects of the utility model include: the low-voltage direct-current power supply is generated by the power supply component to be directly connected with the contact net and the steel rail to form a closed loop, the acquisition component is responsible for sampling and uploading the voltage and the current on the return flow of the contact net and the urban rail, the control display component is controlled to control the triggering time of the generation signal and the duration of the pulse signal and receive and store the sampling data, the acquisition and the storage of the short-circuit parameters of the subway contact net are realized, and the follow-up analysis of related staff is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the embodiment(s) of the utility model:
fig. 1 is a schematic structural diagram of a urban rail catenary line parameter testing apparatus according to embodiment 1 of the present application.
Fig. 2 is a top view of a control display assembly according to embodiment 1 of the present application.
Fig. 3 is a block diagram of the bottom of a box of a urban rail catenary line parameter testing apparatus according to embodiment 1 of the present application.
Fig. 4 is a block diagram of an upper portion of a box of a urban rail catenary line parameter testing apparatus according to embodiment 1 of the present application.
Reference numerals
1-box, 11-upper box, 12-bottom box, 2-cover, 3-lock catch and 4-handle.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
Example 1
As shown in fig. 1-4, the urban rail contact network line parameter testing device comprises a box body 1 and a cover body 2, wherein one side of the box body 1 is hinged with one side of the cover body 2, the other side of the box body 1 is detachably connected with the other side of the cover body 2 through a lock catch 3, and a plurality of handles 4 are arranged on the box body 1; a placing plate is arranged at the upper part 11 of the box body;
be equipped with a city rail contact net circuit parameter test circuit in the box 1, the circuit includes power supply module, collection subassembly and the control show subassembly that the electricity is connected, power supply module for provide DC power supply, collection subassembly is used for test circuit, control switch-on time, synchronous sampling and with the data upload that the sampling obtained, the control show subassembly is used for controlling the switch-on and preserve and demonstrate and gather data, the control show subassembly includes voltmeter, ampere meter, industrial computer and trigger button.
Wherein the power supply component and the collection component are arranged at the bottom 12 of the box body, and the control display component is embedded in the placing plate.
The box body 1 is internally provided with a power adapter, the control display assembly is further provided with a power socket and a ship-shaped switch, and the power adapter, the power socket and the ship-shaped switch are electrically connected in sequence.
The power supply assembly comprises a power supply module, a control transformer, a bridge rectifier circuit and an RC circuit which are sequentially connected, wherein the anode and the cathode of the RC circuit are respectively connected with a tested circuit and the ground through red and black lines through a relay; the RC circuit is formed by connecting capacitors C1, C2 and C3 in parallel to form a large capacitor and then connecting the large capacitor with a branch connected with resistors R1 and R2 in series in parallel.
The acquisition assembly comprises an electrifying delay module, a high-speed AD collector and a current sampling isolator, wherein the power ends of the electrifying delay module, the high-speed AD collector and the current sampling isolator are connected with the output end of the power module, the input end of the electrifying delay module is connected with the control display assembly, the output end of the electrifying delay module is connected with the relay, the input end of the high-speed AD collector is respectively connected with the RC circuit and the current sampling isolator, and the output is connected with the control display assembly; the current sampling isolator is connected with the current divider in parallel through 1 pin and 2 pin.
The voltmeter and the ammeter of the control display assembly are connected with the red and black lines, the data transmission port of the industrial personal computer is connected with the output of the high-speed AD collector through a USB bus, one end of the trigger button is connected with the output end of the power module, and the other end of the trigger button is connected with the power end of the high-speed AD collector and the power end of the power-on delay module respectively.
The placing plate is provided with a plurality of binding posts which are respectively connected with the red and black lines.
The bottom 12 of the box body is also provided with a power adapter, the control display assembly is also provided with a power socket and a ship-shaped switch, and the power adapter, the power socket and the ship-shaped switch are electrically connected in sequence;
the device comprises the following specific use methods:
(1) The power line of the device is directly connected with 220V alternating current, and the test lines are respectively connected with the anode and the cathode of the rectifier transformer;
(2) Short circuit points are respectively arranged at the near end and the far end of the urban rail contact network;
(3) Opening software and configuring sampling parameters;
(4) Pressing a trigger button to perform short circuit test;
(5) Connecting the device to the other end of the bilateral power supply, and repeating the steps (1) - (4);
(6) The collected data is imported into an industrial control computer for storage, so that related personnel can conveniently carry out subsequent processing.
The foregoing examples merely represent specific embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, which fall within the protection scope of the present application.
Claims (10)
1. The utility model provides a city rail contact net circuit parameter test circuit, its characterized in that, including power supply module, collection subassembly and the control show subassembly that the electricity is connected, power supply module for provide DC power supply, collection subassembly is used for test circuit, control switch-on time, synchronous sampling and with the data upload that the sampling obtained, the control show subassembly is used for controlling the switch-on and preserve and demonstrate and gather data, the control show subassembly includes voltmeter, ampere meter, industrial computer and trigger button.
2. The urban rail catenary line parameter testing circuit according to claim 1, wherein the power supply assembly comprises a power supply module, a control transformer, a bridge rectifier circuit and an RC circuit which are sequentially connected, wherein the anode and the cathode of the RC circuit are respectively connected with a tested line and the ground through red and black lines through a relay.
3. The urban rail catenary line parameter testing circuit according to claim 2, wherein the acquisition assembly comprises a power-on delay module, a high-speed AD collector and a current sampling isolator, wherein power supply ends of the power-on delay module, the high-speed AD collector and the current sampling isolator are all connected with an output end of the power supply module, an input end of the power-on delay module is connected with the control display assembly, an output end of the power-on delay module is connected with the relay, an input end of the high-speed AD collector is respectively connected with the RC circuit and the current sampling isolator, and an output end of the power-on delay module is connected with the control display assembly.
4. The urban rail contact network line parameter testing circuit according to claim 3, wherein the voltmeter and the ammeter are connected with red and black lines, a data transmission port of the industrial personal computer is connected with the output of the high-speed AD collector through a USB bus, one end of the trigger button is connected with the output end of the power supply module, and the other end of the trigger button is connected with the power supply end of the high-speed AD collector and the power supply end of the power-on delay module respectively.
5. The urban rail catenary line parameter testing circuit according to claim 2, wherein the RC circuit is a branch circuit in which capacitors C1, C2 and C3 are connected in parallel to form a large capacitor and then connected in series with resistors R1 and R2.
6. A circuit for testing parameters of urban rail catenary according to claim 3, wherein the current sampling isolator is connected with the current divider in parallel through 1 and 2 pins.
7. The urban rail catenary line parameter testing circuit according to any one of claims 2-6, wherein the control display assembly is further provided with a plurality of binding posts, and the binding posts are respectively connected with the red and black lines.
8. The utility model provides a city rail contact net circuit parameter testing arrangement, its characterized in that is equipped with box (1) and lid (2), box (1) one side is articulated with lid (2) one side, and box upper portion (11) are equipped with places the board, be equipped with the city rail contact net circuit parameter testing circuit of any one of claims 1-7 in box (1), wherein power supply module, collection subassembly locate bottom of the case (12), control show subassembly embedding is placed on the board.
9. The urban rail catenary line parameter testing device according to claim 8, wherein a power adapter is further arranged in the box body (1), the control display assembly is further provided with a power socket and a ship-shaped switch, and the power adapter, the power socket and the ship-shaped switch are electrically connected in sequence.
10. The urban rail catenary line parameter testing device according to claim 8 or 9, wherein the other side of the box body (1) is detachably connected with the other side of the cover body (2) through a lock catch (3), and a plurality of handles (4) are arranged on the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321378214.3U CN220419533U (en) | 2023-06-01 | 2023-06-01 | City rail contact net circuit parameter test circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321378214.3U CN220419533U (en) | 2023-06-01 | 2023-06-01 | City rail contact net circuit parameter test circuit and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220419533U true CN220419533U (en) | 2024-01-30 |
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ID=89660776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321378214.3U Active CN220419533U (en) | 2023-06-01 | 2023-06-01 | City rail contact net circuit parameter test circuit and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220419533U (en) |
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2023
- 2023-06-01 CN CN202321378214.3U patent/CN220419533U/en active Active
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