CN112853454A - Electric cleaning and repairing device and method for urban rail vehicle relay - Google Patents
Electric cleaning and repairing device and method for urban rail vehicle relay Download PDFInfo
- Publication number
- CN112853454A CN112853454A CN202011634867.4A CN202011634867A CN112853454A CN 112853454 A CN112853454 A CN 112853454A CN 202011634867 A CN202011634867 A CN 202011634867A CN 112853454 A CN112853454 A CN 112853454A
- Authority
- CN
- China
- Prior art keywords
- relay
- contact
- power supply
- repaired
- rail vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Keying Circuit Devices (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses an electric cleaning and repairing device and method for an urban rail vehicle relay, and belongs to the technical field of rail transit. The problem of in the prior art relay repair process cause relay internal part spare, cable damage easily, lead to cladding material to destroy easily, reduce the use reliability is solved. The invention comprises a direct current program control power supply, a switch, a constant current output power supply and an inductive resistor, wherein the direct current program control power supply, the switch and a coil of a relay are connected in series to form a loop, and the constant current output power supply and a contact to be repaired of the relay are connected in series to form the loop. The relay is closed and the disconnection is in the twinkling of an eye, and the electric current that passes through on the relay contact draws the arc and can clears away the oxide layer on the relay contact, avoids the risk that the inside device of relay damaged, ensures simultaneously that relay contact cladding material does not receive the damage, makes the contact resistance value of relay contact resume qualified scope in, has reduced relay replacement quantity, has reduced the cost of overhaul, is applicable to getting rid of oxide on the contact of relay.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to an electric cleaning and repairing device and method for an urban rail vehicle relay.
Background
When the urban rail vehicle is overhauled, the contact resistance value exceeding fault of the relay caused by contact oxidation accounts for about 83%, the common disposal method aiming at the fault is to open the shell of the relay, polish and clean the oxidized part of the relay contact by using fine sand paper and an electronic cleaning agent, and directly replace the relay of which the contact resistance value does not reach the standard after treatment.
In the prior art, a method for polishing and cleaning relay contacts is used, a relay shell needs to be opened, and the polishing process may be damaged by touching internal devices of the relay and cable welding spots; the relay contact is generally provided with a coating, and after the relay contact is polished and cleaned, the coating is inevitably damaged, so that the aging of the relay contact is accelerated, and the use reliability is reduced; the relay shell of some models bonds firmly and can't be opened, and this part relay contact resistance value exceeds standard, can only directly change the relay, and the cost of overhaul is higher.
Disclosure of Invention
Aiming at the problems that in the prior art, the relay repair process is easy to cause damage to internal devices and cables of the relay, the plating layer is easy to damage, and the use reliability is reduced, the invention provides an electric cleaning repair device and method for the relay of an urban rail vehicle, and aims to provide the electric cleaning repair device and the method for the relay of the urban rail vehicle, which are characterized in that: the risk of damage caused by touching the internal devices of the relay is avoided, and meanwhile, the plated layer of the relay contact is prevented from being damaged, so that the contact resistance value of the relay contact is restored to a qualified range to achieve a repairing effect, the number of the relay replacement parts is reduced, and the overhauling cost is reduced.
The technical scheme adopted by the invention is as follows:
the electric cleaning and repairing device for the urban rail vehicle relay comprises a direct-current program-controlled power supply, a switch, a constant-current output power supply and an inductive resistor, wherein the direct-current program-controlled power supply, the switch and a coil of the relay are connected in series to form a loop, and the constant-current output power supply and a contact to be repaired of the relay are connected in series to form a loop.
After the technical scheme is adopted, the oxidation layer on the relay contact can be cleared by the current arcing passing through the relay contact at the moment of closing and opening the relay, and the oxidation layer on the relay contact can be removed for many times by controlling the switch to be closed and opened at a certain frequency. The method can clean the oxide layer on the relay contact without opening the relay shell, avoids the risk of damage caused by touching the internal device of the relay, simultaneously can ensure that the coating of the relay contact is not damaged, enables the contact resistance value of the relay contact to be restored to the qualified range to achieve the repairing effect, reduces the number of the relay replacement parts and reduces the maintenance cost.
Preferably, an inductive resistor is connected in series in a loop formed by connecting the constant current output power supply and the contact to be repaired of the relay in series.
After the preferred scheme is adopted, the inductive resistor is used as an inductive load, and when the contacts are separated, the reverse time is longer, so that the time for generating electric arcs is prolonged, and the effect of cleaning an oxide layer is better.
Preferably, the supply voltage of the direct current programmable power supply is the same as the rated voltage of the relay coil.
After adopting this preferred scheme, can prevent that the voltage is too high and burn out the relay coil.
Preferably, the switch is a counter switch.
After the technical scheme is adopted, the relay can be controlled to be switched on and off at a certain frequency through the counting switch, and multiple times of current arc discharge is generated, so that an oxide layer on the relay contact is removed.
The electric cleaning and repairing method for the relay of the urban rail vehicle comprises the following steps of:
step 1: connecting a relay coil with a direct-current program control power supply and a switch in series to form a loop, and connecting a contact to be repaired of a relay with a constant-current output power supply and an inductive resistor in series to form a loop;
step 2: adjusting the current of the constant-current output power supply according to the type of the contact to be repaired;
and step 3: setting the on-off times of the counting switch according to the type of the contact to be repaired;
and 4, step 4: and controlling the counting switch to be opened and closed for multiple times, wherein at the moment of closing and opening, the current generated on the contact to be repaired is arc-drawn to clear the oxide layer, so that the contact resistance value of the contact to be repaired is recovered to be within a qualified range.
After the technical scheme is adopted, the oxide layer on the contact to be repaired of the relay can be removed only by setting the output current and the on-off times of the technical switch according to the type of the contact to be repaired without opening the relay shell, so that the device inside the relay and the coating on the contact can not be damaged, the use reliability of the relay is improved, and the overhaul cost is reduced.
Preferably, in step 2, if the contact to be repaired is a silver-plated contact, the output current of the constant-current output power supply is adjusted to be 1A.
After the adoption of the preferred scheme, the method has the advantages that,
preferably, in step 2, if the contact to be repaired is a gold-plated contact, the output current of the constant current output power supply is adjusted to be 0.01A.
Preferably, in step 3, if the contact to be repaired is a silver-plated contact, the number of times of turning on and off the counter switch is set to 10 times.
Preferably, in step 3, if the contact to be repaired is a gold-plated contact, the number of times of turning on and off the counter switch is set to 50.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. at the moment of closing and opening the relay, the current passing through the relay contact is arc-drawn to clear away the oxide layer on the relay contact, and the switch is controlled to be closed and opened at a certain frequency, so that the oxide layer on the relay contact can be removed for many times. The method can clean the oxide layer on the relay contact without opening the relay shell, avoids the risk of damage caused by touching the internal device of the relay, simultaneously can ensure that the coating of the relay contact is not damaged, enables the contact resistance value of the relay contact to be restored to the qualified range to achieve the repairing effect, reduces the number of the relay replacement parts and reduces the maintenance cost.
2. The inductive resistor is used as an inductive load, and has longer return time when the contacts are separated, so that the time for generating electric arc is prolonged, and the effect of cleaning an oxide layer is better.
3. The power supply voltage of the direct current program control power supply is the same as the rated voltage of the relay coil, so that the relay coil can be prevented from being burnt out due to overhigh voltage.
4. The relay is controlled to be closed and opened at a certain frequency through the counting switch, multiple times of current arcing is generated, and therefore an oxide layer on a relay contact is eliminated, the relay is not required to be manually controlled to be closed and opened, and labor cost is saved.
5. According to the invention, the oxide layer on the contact to be repaired of the relay can be removed only by setting the output current and the on-off times of the technical switch according to the type of the contact to be repaired, the shell of the relay does not need to be opened, and devices in the relay and the coating on the contact cannot be damaged, so that the use reliability of the relay is improved, and the overhaul cost is reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
The present invention will be described in detail with reference to fig. 1.
Example 1
The embodiment provides an electric cleaning and repairing device and method for an urban rail vehicle relay, which are used for removing an oxide layer on a relay contact and solving the problem that the contact resistance value of the relay contact exceeds the standard due to oxidation. The clean prosthetic devices of urban rail vehicle relay electricity that this embodiment provided can clear away the oxide layer on the relay contact in the condition that need not to open the relay shell, has avoided causing the risk of damage because of touching relay inner device, can ensure simultaneously that relay contact cladding material is not damaged, makes the contact resistance value of relay contact resume reach the repair effect in the qualified scope, has reduced relay and has traded a quantity, has reduced the cost of overhaul.
The electric cleaning and repairing device for the urban rail vehicle relay comprises a direct-current program control power supply, a switch and a constant-current output power supply, wherein the power supply, the switch and a coil of the relay are connected in series to form a loop, and the constant-current output power supply and a contact to be repaired of the relay are connected in series to form a loop. The direct current programmable power supply is a direct current power supply, has constant voltage and is used for supplying power to the relay coil, and the power supply voltage is the rated voltage of the relay coil. The switch is used for controlling the relay to be closed and opened, and the constant current output power supply provides constant current for the contact to be repaired of the relay. According to different materials of relay contact coating, corresponding constant current needs to be set, constant electric arc generated in the opening and closing process of the contact is guaranteed, and an oxidation layer is dotted. At the moment of opening, closing and opening, the current passing through the contact to be repaired of the relay is arc-drawn to clear the oxide layer on the contact of the relay, so that the oxide layer on the contact of the relay is removed under the condition of not opening the shell of the relay.
In this embodiment, an inductive resistor is connected in series in a loop formed by connecting the constant current output power supply and a contact to be repaired of the relay in series. The inductive resistor is used as an inductive load, and has longer return time when the contacts are separated, so that the time for generating electric arc is prolonged, and the effect of cleaning an oxide layer is better.
In this embodiment, the supply voltage of the dc program-controlled power supply is the same as the rated voltage of the relay coil.
In this embodiment, the switch is a counter switch for controlling the relay to close and open at a certain frequency.
The electric cleaning and repairing method for the relay of the urban rail vehicle comprises the following steps of:
step 1: connecting a relay coil with a power supply and a switch in series to form a loop, and connecting a contact to be repaired of a relay with a constant current output power supply and an inductive resistor in series to form a loop;
step 2: adjusting the current of the constant-current output power supply according to the type of the contact to be repaired;
and step 3: setting the on-off times of the counting switch according to the type of the contact to be repaired;
and 4, step 4: and controlling the counting switch to be opened and closed for multiple times, wherein at the moment of closing and opening, the current generated on the contact to be repaired is arc-drawn to clear the oxide layer, so that the contact resistance value of the contact to be repaired is recovered to be within a qualified range.
In this embodiment, the contact to be repaired is a silver-plated contact, so in step 2, the output current of the constant current output power supply is adjusted to 1A, and in step 3, the number of times of turning on and off the counter switch is set to 10 times.
Example 2
The electric cleaning and repairing device for the urban rail vehicle relay comprises a direct-current program-controlled power supply, a switch and a constant-current output power supply, wherein the power supply, the switch and a coil of the relay are connected in series to form a loop, and the constant-current output power supply and a contact to be repaired of the relay are connected in series to form a loop. The direct current programmable power supply is a direct current power supply, has constant voltage and is used for supplying power to the relay coil, and the power supply voltage is the rated voltage of the relay coil. The switch is used for controlling the relay to be closed and opened, and the constant current output power supply provides constant current for the contact to be repaired of the relay. At the moment of opening, closing and opening, the current passing through the contact to be repaired of the relay is arc-drawn to clear the oxide layer on the contact of the relay, so that the oxide layer on the contact of the relay is removed under the condition of not opening the shell of the relay.
In this embodiment, an inductive resistor is connected in series in a loop formed by connecting the constant current output power supply and a contact to be repaired of the relay in series. The inductive resistor is used as an inductive load, and has longer return time when the contacts are separated, so that the time for generating electric arc is prolonged, and the effect of cleaning an oxide layer is better.
In this embodiment, the supply voltage of the dc program-controlled power supply is the same as the rated voltage of the relay coil.
In this embodiment, the switch is a counter switch for controlling the relay to close and open at a certain frequency.
The electric cleaning and repairing method for the relay of the urban rail vehicle comprises the following steps of:
step 1: connecting a relay coil with a power supply and a switch in series to form a loop, and connecting a contact to be repaired of a relay with a constant current output power supply and an inductive resistor in series to form a loop;
step 2: adjusting the current of the constant-current output power supply according to the type of the contact to be repaired;
and step 3: setting the on-off times of the counting switch according to the type of the contact to be repaired;
and 4, step 4: and controlling the counting switch to be opened and closed for multiple times, wherein at the moment of closing and opening, the current generated on the contact to be repaired is arc-drawn to clear the oxide layer, so that the contact resistance value of the contact to be repaired is recovered to be within a qualified range.
In this embodiment, the contact to be repaired of the relay is a gold-plated contact, so in step 2, the output current of the constant current output power supply is adjusted to 0.01A. In step 3, the number of times of turning on and off the counter switch is set to 50.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (9)
1. The utility model provides an electric clean prosthetic devices of urban rail vehicle relay which characterized in that: the direct current programmable power supply, the switch and a coil of the relay are connected in series to form a loop, and the constant current output power supply and a contact to be repaired of the relay are connected in series to form the loop.
2. The electric cleaning and repairing device for the urban rail vehicle relay according to claim 1, characterized in that: and an inductive resistor is connected in series in a loop formed by connecting the constant current output power supply and a contact to be repaired of the relay in series.
3. The electric cleaning and repairing device for the urban rail vehicle relay according to claim 1, characterized in that: and the power supply voltage of the direct current program control power supply is the same as the rated voltage of the relay coil.
4. The electric cleaning and repairing device for the urban rail vehicle relay according to claim 1, characterized in that: the switch is a counting switch.
5. An electric cleaning and repairing method for an urban rail vehicle relay is characterized by comprising the following steps of:
step 1: connecting a relay coil with a direct-current program control power supply and a switch in series to form a loop, and connecting a contact to be repaired of a relay with a constant-current output power supply and an inductive resistor in series to form a loop;
step 2: adjusting the current of the constant-current output power supply according to the type of the contact to be repaired;
and step 3: setting the on-off times of the counting switch according to the type of the contact to be repaired;
and 4, step 4: and controlling the counting switch to be opened and closed for multiple times, wherein at the moment of closing and opening, the current generated on the contact to be repaired is arc-drawn to clear the oxide layer, so that the contact resistance value of the contact to be repaired is recovered to be within a qualified range.
6. The electric cleaning and repairing method for the urban rail vehicle relay according to claim 5, wherein in the step 2, if the contact to be repaired is a silver-plated contact, the output current of the constant-current output power supply is adjusted to be 1A.
7. The electric cleaning and repairing method for the urban rail vehicle relay according to claim 5, wherein in the step 2, if the contact to be repaired is a gold-plated contact, the output current of the constant-current output power supply is adjusted to be 0.01A.
8. The electric cleaning and repairing method for the urban rail vehicle relay according to claim 5, wherein in the step 3, if the contact to be repaired is a silver-plated contact, the on-off frequency of the counting switch is set to 10 times.
9. The method for electrically cleaning and repairing the urban rail vehicle relay according to claim 5, wherein in step 3, if the contact to be repaired is a gold-plated contact, the turn-off number of the counting switch is set to 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634867.4A CN112853454A (en) | 2020-12-31 | 2020-12-31 | Electric cleaning and repairing device and method for urban rail vehicle relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011634867.4A CN112853454A (en) | 2020-12-31 | 2020-12-31 | Electric cleaning and repairing device and method for urban rail vehicle relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112853454A true CN112853454A (en) | 2021-05-28 |
Family
ID=76000525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011634867.4A Pending CN112853454A (en) | 2020-12-31 | 2020-12-31 | Electric cleaning and repairing device and method for urban rail vehicle relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112853454A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174484Y (en) * | 1993-05-07 | 1994-08-17 | 官春雨 | Non-etching electronic rust-removing apparatus |
| WO2007011692A1 (en) * | 2005-07-14 | 2007-01-25 | Watlow Electric Manufacturing Company | Apparatus and method for relay contact arc suppression |
| CN108597956A (en) * | 2018-06-29 | 2018-09-28 | 上海安奕极企业发展有限公司 | It can self-cleaning relay |
| CN208954907U (en) * | 2018-09-04 | 2019-06-07 | 中山市宏智泰电器有限公司 | A kind of relay contact automatic cleaning apparatus |
| CN211014548U (en) * | 2019-08-15 | 2020-07-14 | 成都中车四方轨道车辆有限公司 | Relay testing device |
-
2020
- 2020-12-31 CN CN202011634867.4A patent/CN112853454A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2174484Y (en) * | 1993-05-07 | 1994-08-17 | 官春雨 | Non-etching electronic rust-removing apparatus |
| WO2007011692A1 (en) * | 2005-07-14 | 2007-01-25 | Watlow Electric Manufacturing Company | Apparatus and method for relay contact arc suppression |
| CN108597956A (en) * | 2018-06-29 | 2018-09-28 | 上海安奕极企业发展有限公司 | It can self-cleaning relay |
| CN208954907U (en) * | 2018-09-04 | 2019-06-07 | 中山市宏智泰电器有限公司 | A kind of relay contact automatic cleaning apparatus |
| CN211014548U (en) * | 2019-08-15 | 2020-07-14 | 成都中车四方轨道车辆有限公司 | Relay testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112853454A (en) | Electric cleaning and repairing device and method for urban rail vehicle relay | |
| CN101870079A (en) | Alternating-current electric grinding method for conductive contact surfaces | |
| US3459996A (en) | Starting circuit for direct current arc welder | |
| CN110417113A (en) | The method that parallel connection type ac uninterrupted power supply and realization do not power off | |
| CN1104831C (en) | Power supply circuit of microwave oven | |
| CN205092563U (en) | Quick -witted door opening electrical outage safety protection charges | |
| CN208094166U (en) | DC motor positive and negative rotation Drive Protecting Circuit | |
| CN202010935U (en) | Portable direct current (DC) pulse type grinder for relay contact | |
| CN208954907U (en) | A kind of relay contact automatic cleaning apparatus | |
| CN210007418U (en) | high-pressure pre-charging device | |
| CN209860589U (en) | Device for eliminating excitation surge current | |
| CN102169769A (en) | Conductive contact surface performance online diagnosing and repairing system and using method thereof | |
| CN107068488A (en) | New type of current source formula contactor Anti-electricity dazzling device and its control method | |
| CN205487825U (en) | Modular the DC load on -off system | |
| CN219123309U (en) | Residual electricity discharging device | |
| CN218396357U (en) | Independent power supply system for series welding machine electromagnet | |
| CN208904333U (en) | A kind of anti-aging vehicle plug ignition device | |
| CN109904930A (en) | Electric knife gate long-range control method based on line feed terminals | |
| KR200420578Y1 (en) | Spark killer for relay | |
| CN214845537U (en) | Low-voltage apparatus electric service life counting and contact fusion welding protection control circuit | |
| CN209964349U (en) | Safe electronic mosquito killer circuit | |
| CN220822625U (en) | Two-in-one bus-tie control power supply protection circuit of generator | |
| CN220650834U (en) | Service life testing device for electric switch device | |
| CN217656472U (en) | Power-off holding device for industrial personal computer of laser cutting machine | |
| CN101870078A (en) | Direct-current electric grinding method for conductive contact surfaces |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |