CN209560355U - A kind of normally opened relay of transformer Cooling case PLC - Google Patents
A kind of normally opened relay of transformer Cooling case PLC Download PDFInfo
- Publication number
- CN209560355U CN209560355U CN201920813135.8U CN201920813135U CN209560355U CN 209560355 U CN209560355 U CN 209560355U CN 201920813135 U CN201920813135 U CN 201920813135U CN 209560355 U CN209560355 U CN 209560355U
- Authority
- CN
- China
- Prior art keywords
- coil
- rotating bars
- contact
- shape frame
- normally opened
- 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.)
- Active
Links
Abstract
This application discloses the normally opened relays of transformer Cooling case PLC a kind of, including T shape frame, the top of T shape frame, right side is respectively equipped with rotating bars and iron core, coil is wound on the outside of iron core, coil is connected with power supply and switch, rotating bars left end is connect by restoring spring with T shape frame, armature and conductive contact blade are fixed on rotating bars, the right side of T shape frame is equipped with F shape plate, contact is fixed on institute F shape plate, the top of rotating bars is equipped with delay drop thermal, first resistor is in series on coil, the both ends of first resistor are connected with contact socket, delay drop thermal includes being fixed on the series connection appearance resistance on rotating bars top, series connection holds resistance and is connected with pin, RC circuit is removably connected in parallel on coil circuit by delay drop thermal perfection, coil heating amount is reduced by reducing electric current when coil is powered, and it is disconnected in coil circuit A part of self induction electromotive force is absorbed in a flash, so that contact be avoided to generate spark and interference source, improves contact service life.
Description
Technical field
The utility model belongs to electrical equipment technical field more particularly to a kind of normally opened relay of transformer Cooling case PLC
Device.
Background technique
The stable operation of transformer is to ensure that the important link of Operation of Electric Systems, in order to ensure matter of powering to greatest extent
Amount, improves Operation of Electric Systems stability, and the trouble hunting for carrying out power equipment just seems particularly significant.
The control switch of intelligent transformer cooler control device PLC is generally controlled by relay, therefore the matter of relay
It measures particularly critical.Relay is a kind of electric control device, is when the variation of input quantity reaches prescribed requirement, in electrical output electricity
Make controlled volume that a kind of electric appliance of scheduled Spline smoothing occur in road.It has control system and by the interaction between control system
Relationship.It is usually applied in automation control circuit, it is actually to go one kind of control high current running " certainly with low current
Dynamic switch ".Therefore the effects of playing automatic adjustment, safeguard protection, conversion circuit in circuit.
Two contacts are to disconnect when the coil no power of normally opened relay, and after energization, two contacts, which are just closed, to be made to control back
Road closure.
But present relay heat dissipation effect is bad, the coil of exchange can also generate vortex and generate heat, because for a long time
Fever, so relay life is not grown, if series resistance and shunt capacitance on direct-on-line circle, easily cause electric current to reduce, suction
It is unstable, it can not be attracted after relay vibration back contact disconnects, relay is caused to be attracted unstable problem.
Utility model content
The purpose of this utility model is to provide the normally opened relay of transformer Cooling case PLC a kind of, delay drop thermals
RC circuit is removably connected in parallel on coil circuit by perfection, reduces coil heating by reducing electric current when coil is powered
Amount, and a part of self induction electromotive force is absorbed in a flash in coil circuit disconnection, so that contact be avoided to generate spark and interference source, drop
The possibility that low contact is melted, improves contact service life, with solve in the prior art relay without heat sinking function the service life
Low problem.
For this purpose, the utility model uses following technical scheme:
In the first aspect of the embodiments of the present invention, provide a kind of transformer Cooling case PLC it is normally opened after
Electric appliance, including T shape frame, the top of the T shape frame are hinged with rotating bars, and the right side top surface fixation of the T shape frame is cored, described
Coil is wound on the outside of iron core, the coil is connected with power supply and switch, and the left end of the rotating bars is by restoring spring and T shape frame
Left end connection, the middle part of the rotating bars and right end are respectively fixed with armature and conductive contact blade, and the right side of the T shape frame is equipped with F
Shape plate, the contact positioned at conductive contact blade bottom end is fixed on the F shape plate, and the top of the rotating bars is equipped with delay drop hot charging
It sets；
It is in series with first resistor on the coil on iron core top, the both ends of the first resistor, which pass through conducting wire and are connected with, to be connect
Socket is touched, the delay drop thermal includes being fixed on the series connection appearance resistance on rotating bars top, and the both ends extraction of resistance is held in the series connection
There is pin, the pin is pierced by the bottom surface of rotating bars, and the pin matches with contact socket.
In another embodiment of the utility model, the bottom end of the iron core is equipped with auxiliary heat dissipation component, and the auxiliary dissipates
Hot component includes the heat release hole and thermal grease layer for being located at T shape frame bottom end.
In another embodiment of the utility model, the conductive contact blade is connect by conducting wire with high voltage power supply, the touching
Point is connect with load device, and the load device is connect with high voltage power supply.
In another embodiment of the utility model, it includes the capacitor being serially connected and second resistance that resistance is held in the series connection.
In another embodiment of the utility model, the contact socket includes U-shaped shell, is equipped with water in the U-shaped shell
One end of flat conductive sheet, the horizontal conductive strips and first resistor connects, and the top of the horizontal conductive strips is fixed, and there are two phases
Mutually symmetrical C-shaped elastic conducting strip.
The embodiments of the present invention has the advantages that
The delay drop thermal of the utility model contacts conductive contact film with contact to make to load
Circuit is connected, and armature and iron core are attracted when coil circuit is closed, so that pin be made to be inserted in contact socket, perfection can by RC circuit
It is connected in parallel on coil circuit to detachable, when closure reduces the size of current of coil to reduce calorific value, disconnects a flash
Between RC circuit absorb a part of self induction electromotive force, so that contact be avoided to generate spark and interference source, improve contact service life,
Reduce calorific value.It is radiated using thermal grease layer and heat release hole to iron core, to reduce the heat of iron core and coil, is risen
To the effect of auxiliary heat dissipation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the relay construction schematic diagram that the embodiments of the present invention provide；
Fig. 2 is the contact socket structure schematic diagram that the embodiments of the present invention provide.
In figure:
1-T shape frame；2- rotating bars；3- iron core；4- coil；5- restores spring；6-F shape plate；The contact 7-；8- delay drop hot charging
It sets；9- contacts socket；10- first resistor；11- auxiliary heat dissipation component；12- heat release hole；13- thermal grease layer；
21- armature；22- conductive contact blade；
Resistance is held in 81- series connection；82- pin；83- capacitor；84- second resistance；
91-U shape shell；92- horizontal conductive strips；93-C shape elastic conducting strip.
Specific embodiment
It is practical below in conjunction with this to enable the purpose of this utility model, feature, advantage more obvious and understandable
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that under
The described embodiments are only a part of the embodiments of the utility model in face, and not all embodiment.Based on the utility model
In embodiment, all other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, fall within the protection scope of the utility model.
As depicted in figs. 1 and 2, the utility model provides the normally opened relay of transformer Cooling case PLC a kind of, including T
Shape frame 1, the top of T shape frame 1 are hinged with rotating bars 2, and the right side top surface of T shape frame 1 fixes cored 3, is wound with coil on the outside of iron core 3
4, coil 4 is connected with power supply and switch, and the left end of rotating bars 2 is connect by restoring spring 5 with 1 left end of T shape frame, rotating bars 2
Middle part and right end are respectively fixed with armature 21 and conductive contact blade 22.
The right side of T shape frame 1 is equipped with F shape plate 6, is fixed with the contact 7 positioned at 22 bottom end of conductive contact blade, F shape plate 6 on F shape plate 6
Top be equipped with two pieces of transverse slats, and conductive contact blade 22 is plugged between two pieces of transverse slats, its position-limiting action of transverse slat, and contact 7 is located at bottom
On the transverse slat at end, such conductive contact blade 22 can contact with contact 7 when declining and control loop is connected.Conductive contact blade 22 can be set
It counts multiple and sets in a row, and the contact 7 of its lower end or multiple, more than 7 conductive contact blade 22 of contact one-to-one correspondence, above-mentioned knot
Structure is the basic structure of relay.
Conductive contact blade 22 is connect by conducting wire with high voltage power supply, and contact 7 is connect with load device, load device and high-voltage electricity
Source connection, relay pass through the on-off of low voltage control high-voltage load circuit.The principle of normally opened relay: in 4 no power of coil,
Make the conductive contact blade 22 of 2 right end of rotating bars is upper to the right to tilt under the pulling force effect for restoring spring 5, at this time conductive contact blade 22 not with
Contact 7 contacts, and load circuit is not turned on.When coil 4 is powered, iron core 3 and coil 4 form an electromagnet and generate magnetic attraction, make
21 downlink of armature is simultaneously affixed with 3 top of iron core, meanwhile, conductive contact blade 22 is contacted to bottom offset with contact 7, to make load circuit
It begins to turn on and works.
The bottom end of iron core 3 is equipped with auxiliary heat dissipation component 11, and auxiliary heat dissipation component 11 includes the heat dissipation for being located at 1 bottom end of T shape frame
Hole 12 and thermal grease layer 13, thermal grease layer 13 are affixed with 3 bottom surface of iron core.Because the fever of coil 4 can pass to iron core 3, and
The electromagnet of some AC relays can generate vortex and generate heat, therefore in the bottom end of iron core 3 setting heat release hole 12 and heat dissipation silicon
Glue-line 13 can quickly pass the fever of iron core 3, play the role of physics heat dissipation, melt coil 4 to reduce
The possibility of insulated hull or insulating coating.
First resistor 10 is in series on the coil 4 on 3 top of iron core, first resistor 10 has the function of current limliting, prevents line
Electric current in circle 4 is excessive and burns out.The both ends of first resistor 10 pass through conducting wire and are connected with contact socket 9, the top of rotating bars 2
Thermal 8 drops equipped with delay, and delay drop thermal 8 holds resistance 81 including being fixed on the series connection on 2 top of rotating bars, and series connection, which is held, hinders 81
Both ends lead to pin 82, and pin 82 is pierced by the bottom surface of rotating bars 2, and pin 82 matches with contact socket 9, and two pins 82 divide
Not Wei Yu armature 21 left and right side, and pin 82 is not contacted with armature 21, does not influence the attracting state of armature 21.
It includes the capacitor 83 that is serially connected and second resistance 84 that resistance 81 is held in series connection, and capacitor 83 and second resistance 84 are and armature
It is dielectrically separated between 21, avoids leaking electricity.Contacting socket 9 includes U-shaped shell 91, and two U-shaped shells 91 are separately mounted to T shape frame 1 and F shape
On plate 6, horizontal conductive strips 92 are installed in U-shaped shell 91, horizontal conductive strips 92 are connect with one end of first resistor 10, horizontal conductive
The top of piece 92 is fixed, and there are two symmetrical C-shaped elastic conducting strips 93.The middle part of two C-shaped elastic conducting strips 93 is attached to one
It rises, when pin 82 injects between two C-shaped elastic conducting strips 93, deformation occurs for two C-shaped elastic conducting strips 93, and elastic shape
Variable force can clamp pin 82 again, be parallel on coil 4 so that resistance 81 is held in series connection.
The relay radiating principle of the utility model are as follows: after conducting is powered in the circuit of coil 4, iron core 3 and coil 4 are formed
Electromagnet start generate 21 downlink of magnetic gravitational attraction armature, be affixed armature 21 gradually with 3 top surface of iron core, at the same pin 82 insert
Into contact socket 9, so that capacitor 83 and second resistance 84 to be parallel to the both ends of first resistor 84, playing reduces circuital current
Effect, to reduce the calorific value of coil 4.In addition, being disconnected in a flash in coil 4, since pin 82 is not completely from connecing
It touches in socket 9 and extracts, RC circuit plays the induced electromotive force for absorbing that a part of relay coil 4 is generated due to self-induction at this time
Effect extends 21 release time of armature so that current attenuation in coil be made to pile, and plays the role of delay protection, absorbs electronic
The spark that the effect of gesture generates when switch contact can be effectively prevent to act, also avoids interfering with adjacent circuit, to improve
The service life of relay.
If disconnecting the loaded line of closure temporarily, pin 82 is exercised on armature 21 at this time from contact socket 9
Interior extraction, but at this time since the RC effect for reducing electric current disappears therefore the electric current of coil 4 rises again, suction enhances again, from
And suction is made to restore to the original state, iron core 3 is attracted with armature 21 again, therefore can flexibly grafting and isolated RC circuit will not influence
The suction of electromagnetic relay, to ensure that the job stability of electromagnetic relay.
The above, above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng
The utility model is described in detail according to previous embodiment, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (5)
1. a kind of normally opened relay of transformer Cooling case PLC, which is characterized in that including T shape frame (1), the T shape frame (1)
Top is hinged with rotating bars (2), and the right side top surface of the T shape frame (1) is fixed cored (3), around wired on the outside of the iron core (3)
It encloses (4), the coil (4) is connected with power supply and switch, and the left end of the rotating bars (2) is by restoring spring (5) and T shape frame
(1) left end connects, and the middle part of the rotating bars (2) and right end are respectively fixed with armature (21) and conductive contact blade (22), the T shape
The right side of frame (1) is equipped with F shape plate (6), is fixed with the contact (7) positioned at conductive contact blade (22) bottom end, institute on the F shape plate (6)
The top for stating rotating bars (2) is equipped with delay drop thermal (8)；
It is in series with first resistor (10) on the coil (4) on iron core (3) top, the both ends of the first resistor (10), which pass through, leads
Line is connected with contact socket (9), and delay drop thermal (8) includes the series connection appearance resistance (81) for being fixed on rotating bars (2) top,
The both ends that resistance (81) is held in the series connection are led to pin (82), and the pin (82) is pierced by the bottom surface of rotating bars (2), the pin
(82) match with contact socket (9).
2. the normally opened relay of transformer Cooling case PLC according to claim 1 a kind of, which is characterized in that the iron core
(3) bottom end is equipped with auxiliary heat dissipation component (11), and the auxiliary heat dissipation component (11) includes the heat dissipation for being located at T shape frame (1) bottom end
Hole (12) and thermal grease layer (13).
3. the normally opened relay of transformer Cooling case PLC according to claim 1 a kind of, which is characterized in that the conduction
Contact (22) is connect by conducting wire with high voltage power supply, and the contact (7) connect with load device, the load device and high-voltage electricity
Source connection.
4. the normally opened relay of transformer Cooling case PLC according to claim 1 a kind of, which is characterized in that the series connection
Holding resistance (81) includes the capacitor (83) being serially connected and second resistance (84).
5. the normally opened relay of transformer Cooling case PLC according to claim 1 a kind of, which is characterized in that the contact
Socket (9) includes U-shaped shell (91), is equipped with horizontal conductive strips (92) in the U-shaped shell (91), the horizontal conductive strips (92) with
One end of first resistor (10) connects, and the top of the horizontal conductive strips (92) is fixed, and there are two symmetrical C-shaped elastic conductings
Electric piece (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920813135.8U CN209560355U (en) | 2019-05-31 | 2019-05-31 | A kind of normally opened relay of transformer Cooling case PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920813135.8U CN209560355U (en) | 2019-05-31 | 2019-05-31 | A kind of normally opened relay of transformer Cooling case PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209560355U true CN209560355U (en) | 2019-10-29 |
Family
ID=68313935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920813135.8U Active CN209560355U (en) | 2019-05-31 | 2019-05-31 | A kind of normally opened relay of transformer Cooling case PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209560355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161955A (en) * | 2019-05-31 | 2019-08-23 | 广东电网有限责任公司 | A kind of transformer Cooling case PLC failure emergency processing method and normally opened relay |
| CN111071544A (en) * | 2020-02-21 | 2020-04-28 | 福清市茂顺包装有限公司 | Loading machine controlled by relay |
-
2019
- 2019-05-31 CN CN201920813135.8U patent/CN209560355U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161955A (en) * | 2019-05-31 | 2019-08-23 | 广东电网有限责任公司 | A kind of transformer Cooling case PLC failure emergency processing method and normally opened relay |
| CN110161955B (en) * | 2019-05-31 | 2024-02-02 | 广东电网有限责任公司 | Transformer cooling box PLC fault emergency processing method and normally open relay |
| CN111071544A (en) * | 2020-02-21 | 2020-04-28 | 福清市茂顺包装有限公司 | Loading machine controlled by relay |
| CN111071544B (en) * | 2020-02-21 | 2020-12-22 | 嘉兴市创美电器有限公司 | Loading machine controlled by relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209560355U (en) | A kind of normally opened relay of transformer Cooling case PLC | |
| CN207542769U (en) | Automatically power off control circuit and toaster | |
| CN207752946U (en) | A kind of high-reliability electrical magnetic relay of low-temperature-rise shock resistance electric current | |
| US8981594B2 (en) | Advance power-saving power socket for power saving system | |
| CN205729081U (en) | Electric kettle line control unit | |
| CN208890347U (en) | A kind of temperature protection circuit for socket | |
| CN110161955B (en) | Transformer cooling box PLC fault emergency processing method and normally open relay | |
| CN203103232U (en) | Double-coil contactor | |
| CN207474202U (en) | A kind of Small Power Single-phase Power Transformer | |
| CN205535996U (en) | AC/DC control by temperature change electric heater | |
| CN112594892A (en) | PTC electric heating control device, PTC electric heating control method, air conditioner, medium and computer equipment | |
| TWM586475U (en) | Neutral-line circuit protection equipment | |
| CN205383796U (en) | Scattered blow -dryer controller of bathroom heater and bathroom heater | |
| CN205005286U (en) | Low -power consumption electromagnetism stove | |
| CN205332649U (en) | A heating drawer for in refrigerator | |
| CN204144015U (en) | Low-pressure dry iron core reactor auxiliary heat dissipating system | |
| CN116570160A (en) | Relay type electric cooker cooking work circuit | |
| CN220509315U (en) | Control circuit of air fryer | |
| CN208655515U (en) | A kind of intelligence outdoor breaker | |
| CN208849650U (en) | A kind of intelligence sofa adapter | |
| CN201993658U (en) | Control circuit of electric rice cooker | |
| CN209119002U (en) | One kind automatically powering off reset temperature controller | |
| CN211019260U (en) | Control circuit for toaster | |
| CN209704814U (en) | Modified form low-power consumption starter | |
| CN207338259U (en) | A kind of relay silver contact |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |