CN217590375U

CN217590375U - Solid-state decoupling device

Info

Publication number: CN217590375U
Application number: CN202221066747.3U
Authority: CN
Inventors: 郭明杰; 孟强; 丁一; 汪吉健; 魏宏伟; 王潘潘; 张志扬; 李亚辉; 魏蓬勃
Original assignee: China Railway Engineering Consulting Group Co Ltd
Current assignee: China Railway Engineering Consulting Group Co Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-10-14
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to the field of electrified railways, in particular to a solid-state decoupling device which comprises an alternating current module, a direct current module and a control module; the input end of the alternating current module is electrically connected with the pipeline, and the output end of the alternating current module is electrically connected with the grounding grid; the direct current module is connected with the alternating current module in parallel, the input end of the direct current module is electrically connected with the pipeline, the output end of the direct current module is electrically connected with the grounding grid, and a first controlled switch K1 is connected between the direct current module and the pipeline in series; control module's first input is connected with the pipeline electricity, and control module's second input electricity is connected with the detecting element who is used for detecting the pipeline current potential, and control module's first output is connected with first controlled switch K1 electricity, the utility model discloses a break-make of direct current module circuit can be controlled to the first controlled switch K1 of control module control, when direct current module circuit switch-on, the electron of ground net can flow in the pipeline negative pole, reaches the purpose of protection pipeline.

Description

Solid-state decoupling device

Technical Field

The utility model relates to an electric railway field especially relates to a solid-state decoupling ware.

Background

In the design of route selection of railways or oil and gas pipelines, due to comprehensive limitations of a plurality of factors such as geographical topography, land resources and the like, local parallel and cross-crossing sections of electrified railways and oil and gas pipelines are difficult to avoid, and alternating current corrosion caused by alternating current interference is difficult to avoid for adjacent metal pipelines of the electrified railways.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solid-state decoupling device aims at solving the problem that current solid-state decoupling device can't provide cathodic protection for the pipeline.

The embodiment of the application provides a solid-state decoupler which comprises an alternating current module, a direct current module and a control module; the input end of the alternating current module is electrically connected with the pipeline, and the output end of the alternating current module is electrically connected with the grounding grid; the direct current module is connected with the alternating current module in parallel, the input end of the direct current module is electrically connected with the pipeline, the output end of the direct current module is electrically connected with the grounding grid, and a first controlled switch K1 is connected between the direct current module and the pipeline in series; the first input end of the control module is electrically connected with the pipeline, the second input end of the control module is electrically connected with a detection unit for detecting the potential of the pipeline, and the first output end of the control module is electrically connected with the first controlled switch K1.

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

1. the utility model discloses a be provided with and to exchange the module setting and can make alternating current excrete to the ground through the grounding net between grounding net and pipeline, can prevent direct current to avoid stray current's interference through making the pipeline with the direct current module setting between grounding net and pipeline.

2. The utility model discloses be connected control module's first input and pipeline electricity, be connected control module's second input and the detecting element electricity that is used for detecting the pipeline electric potential, be connected control module's first output and first controlled switch K1 electricity again, second output and second controlled switch K2 electricity are connected, the pipeline electric potential that obtains through the detecting element detection realizes the nimble control to first controlled switch K1 and second controlled switch K2, reach the purpose that provides cathodic protection for the pipeline.

3. The utility model discloses a set up first lightning protection unit and the common protection pipeline of second lightning protection unit, reach the leading-in earth of protection pipeline through first lightning protection unit and second lightning protection unit with the heavy current of thunder and lightning and avoid the impact of large voltage and high current.

4. The utility model discloses a monitoring module monitors the operating condition who judges the circuit to the electric current of circuit, voltage to pass through wireless transmission module teletransmission to monitoring platform with the data that the monitoring module monitoring obtained, realize the remote monitoring to solid-state decoupling ware, the effectual problem that is difficult to carry out the detection to the trouble of solid-state decoupling ware among the prior art of having solved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a circuit diagram of a solid-state decoupler as described in an embodiment of the present invention.

The labels in the figure are: 1. an alternating current module; 2. a direct current module; 3. a second lightning protection unit; 4. a first lightning protection unit; 5. a grounding grid; 6. a protection module; 7. a detection unit; 8. a pipeline.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not construed as indicating or implying relative importance.

As shown in fig. 1, the present embodiment provides a solid-state decoupler, which includes an ac module 1, a dc module 2, and a control module; the input end of the alternating current module 1 is electrically connected with the pipeline 8, and the output end of the alternating current module 1 is electrically connected with the grounding grid 5; the direct current module 2 is connected with the alternating current module 1 in parallel, the input end of the direct current module 2 is electrically connected with the pipeline 8, the output end of the direct current module 2 is electrically connected with the grounding grid 5, and a first controlled switch K1 is connected between the direct current module 2 and the pipeline 8 in series; control module's first input is connected with 8 electricity in the pipeline, control module's second input electricity is connected with the detecting element 7 that is used for detecting 8 potentiometric in the pipeline, control module's first output and first controlled switch K1 electricity are connected, the utility model discloses a set up alternating current module 1 between grounding net 5 and pipeline 8, can effectually make alternating current pass through grounding net 5 and excrete to the ground, through setting up direct current module 2 between grounding net 5 and pipeline 8, can prevent direct current from passing through, make pipeline 8 avoid stray current's interference, only when the voltage difference at diode or thyristor both ends among direct current module 2 reaches threshold voltage, direct current module 2 just switches on in order to reach the mesh of leakage fault current, direct current module 2's threshold voltage can provide the protection for alternating current module 1 simultaneously, in order to reach the effect that solid-state decoupling ware arranged direct current, in addition, when the electric potential is greater than the first standard electric potential of artifical setting in the circuit, need provide cathodic protection to pipeline 8, control module controls first controlled switch K1 and puts through direct current module 2, grounding net 5 is zinc steel, the zinc can independently carry out the electric power supply circuit and carry out the utility model under the long-term electric power supply circuit, the utility model is realized.

In a specific embodiment of the present disclosure, a protection module 6 for providing cathodic protection for the pipeline 8 is further connected in series to a second output end of the control module, a second controlled switch K2 is connected in series between the protection module 6 and the control module, the second controlled switch K2 is connected in series between the protection module 6 and the pipeline, when a pipeline potential is greater than a second standard potential set manually, the second standard potential is greater than the first standard potential, at this time, the ground grid 5 is not enough to perform cathodic protection on the pipeline 8, then the control module controls the second controlled switch K2 to be turned on, the protection module 6 is connected into a circuit, the protection module 6 is a sacrificial anode, the pipeline 8 can be effectively protected by the protection module 6, and the pipeline 8 is prevented from being electrically corroded.

In one embodiment of the present disclosure, the dc module 2 is further connected in parallel with a first lightning protection unit 4 and a second lightning protection unit 3, the first lightning protection unit 4 is connected in parallel with the second lightning protection unit 3, two ends of the first lightning protection unit 4 and the second lightning protection unit 3 are respectively electrically connected with the pipe 8 and the ground net 5, the first lightning protection unit 4 includes a spark gap, the second lightning protection unit 3 includes a voltage dependent resistor, a first inductor L1 is connected in series between the output ends of the first lightning protection unit 4 and the second lightning protection unit 3, a second inductor L2 is connected in series between the input ends of the first lightning protection unit 4 and the second lightning protection unit 3, the first inductor L1 is connected in parallel with the second inductor L2, a third inductor L3 is connected in series between the output ends of the second lightning protection unit 3 and the dc module 2, a fourth inductor L4 is connected in series between the input ends of the second lightning protection unit 3 and the dc module 2, third inductance L3 and fourth inductance L4 are connected in parallel, when protecting thunder heavy current, third inductance L3 and fourth inductance L4 can block the thunder heavy current and get into interchange module 1 and direct current module 2, first inductance L1 and second inductance L2 are the inductance that steps up, second lightning protection unit 3 moves at first because of the low operating voltage characteristic of piezo-resistor, the thunder heavy current flows from second lightning protection unit 3 and arranges to earth mat 5, first lightning protection unit 4 is the spark gap, along with the thunder heavy current crescent, first lightning protection unit 4 begins the action, the spark gap presents the arc light low voltage state after switching on, second lightning protection unit 3 action is ended, the thunder heavy current flows from first lightning protection unit 4 and arranges to earth mat 5, protect pipeline 8 to avoid the impact of large-voltage and high current through first lightning protection unit 4 and second lightning protection unit 3 jointly.

In one embodiment of the present disclosure, the dc module 2 includes at least one diode array, and two adjacent diode arrays are connected in parallel, and the conduction directions of the two adjacent diode arrays are opposite.

In an embodiment of the present disclosure, the ac module 1 is a non-polar capacitor, and the capacitor can be used to realize the function of blocking dc and ac of the ac module 1, and discharge ac interference current to the ground through the ac module 1.

In a specific embodiment of the present disclosure, a monitoring module for monitoring an operating state of a circuit is connected in series between a pipeline 8 and a ground grid 5, the monitoring module is electrically connected to a wireless transmission module, the monitoring module monitors a current value, an alternating current resistance value, a voltage drop value, and a ground potential value discharged by an alternating current module 1, a direct current module 2, a first lightning protection unit 4, and a second lightning protection unit 3 in the circuit, determines working states of the alternating current module 1, the direct current module 2, the first lightning protection unit 4, and the second lightning protection unit 3 in the circuit, and transmits the data to a monitoring platform, calculates and analyzes data through a database, counts a drainage operating state chart, and provides a data basis for drainage state determination, product fault determination, and drainage reconstruction.

In a specific embodiment of the present disclosure, the control module is electrically connected to the wireless transmission module, the control module obtains a natural corrosion potential, a pipeline polarization potential, and an ac current density value near the pipeline 8 through the detection unit 7, and remotely transmits these data to the monitoring platform through the wireless transmission module, and calculates and analyzes data through the database by combining current values, ac resistance values, voltage drop values, and ground potential values discharged by the ac module 1, the dc module 2, the first lightning protection unit 4, and the second lightning protection unit 3, and calculates and analyzes the data to calculate a drainage operation state chart, thereby providing comprehensive evaluation of effectiveness of the drainage system.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A solid state decoupler, comprising:

the input end of the alternating current module (1) is electrically connected with the pipeline (8), and the output end of the alternating current module (1) is electrically connected with the grounding grid (5);

the direct current module (2) is connected with the alternating current module (1) in parallel, the input end of the direct current module (2) is electrically connected with the pipeline (8), the output end of the direct current module (2) is electrically connected with the grounding grid (5), and a first controlled switch K1 is connected between the direct current module (2) and the pipeline (8) in series; and

the first input end of the control module is electrically connected with the pipeline (8), the second input end of the control module is electrically connected with a detection unit (7) for detecting the electric potential of the pipeline (8), and the first output end of the control module is electrically connected with the first controlled switch K1.

2. The solid-state decoupler as in claim 1, wherein: the second output end of the control module is also connected in series with a protection module (6) used for providing cathodic protection for the pipeline (8), a second controlled switch K2 is connected in series between the protection module (6) and the control module, and the second controlled switch K2 is connected in series between the protection module (6) and the pipeline.

3. The solid-state decoupler as in claim 1, wherein: direct current module (2) still parallel connection has first lightning protection unit (4) and second lightning protection unit (3), first lightning protection unit (4) with second lightning protection unit (3) parallel connection, the both ends of first lightning protection unit (4) and second lightning protection unit (3) equally divide respectively with pipeline (8) with ground net (5) electricity is connected.

4. The solid-state decoupler of claim 3, wherein: the first lightning protection unit (4) comprises a spark gap and the second lightning protection unit (3) comprises a varistor.

5. The solid-state decoupler as in claim 3, wherein: a first inductor L1 is connected in series between the output ends of the first lightning protection unit (4) and the second lightning protection unit (3), a second inductor L2 is connected in series between the input ends of the first lightning protection unit (4) and the second lightning protection unit (3), and the first inductor L1 is connected in parallel with the second inductor L2.

6. The solid-state decoupler of claim 3, wherein: a third inductor L3 is connected in series between the output ends of the second lightning protection unit (3) and the direct current module (2), a fourth inductor L4 is connected in series between the input ends of the second lightning protection unit (3) and the direct current module (2), and the third inductor L3 and the fourth inductor L4 are connected in parallel.

7. The solid-state decoupler as in claim 1, wherein: the direct current module (2) comprises at least one diode array, two adjacent diode arrays are connected in parallel, and the conduction directions of the two adjacent diode arrays are opposite.

8. The solid-state decoupler as in claim 1, wherein: the alternating current module (1) is a non-polar capacitor.

9. The solid-state decoupler of claim 3, wherein: and a monitoring module for monitoring the running state of the circuit is connected in series between the pipeline (8) and the grounding grid (5), and the monitoring module is electrically connected with the wireless transmission module.

10. The solid-state decoupler as in claim 9, wherein: the control module is electrically connected with the wireless transmission module.