CN208621276U - Electric vibration table high voltage excitation unit - Google Patents
Electric vibration table high voltage excitation unit Download PDFInfo
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- CN208621276U CN208621276U CN201821210007.6U CN201821210007U CN208621276U CN 208621276 U CN208621276 U CN 208621276U CN 201821210007 U CN201821210007 U CN 201821210007U CN 208621276 U CN208621276 U CN 208621276U
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Abstract
A kind of electric vibration table high voltage excitation unit；Including rectifier, switching device, protection device and filter；The input of rectifier connects three phase mains, and the magnet exciting coil that output connects shake table exports direct current to it；Switching device is connected between rectifier and three phase mains, the input for open and close three phase mains to rectifier；Protection device corresponds to the input or/and output setting of rectifier, for generating protection signal shutdown three phase mains to the input of rectifier or/and alarming；Filter is connected between the positive and negative anodes of the DC output end of rectifier.The utility model eliminates exciting transformer, improves system reliability, and width reduces costs；Under the premise of exciting power is constant, improve voltage drop low current, so that being achieved using the smaller enameled wire coiling magnet exciting coil of sectional area, the reliability of magnet exciting coil greatly improved, reduce the difficulty of production and assembly, beauty is more easily done in cabling, it is often more important that cost is greatly reduced.
Description
Technical field
The utility model relates to electric vibration testing fields, and in particular to a kind of electric vibration table high voltage excitation unit.
Background technique
In existing electric vibration experiment, supply voltage is rectified through exciting transformer transformation, then rectified unit
DC voltage is provided afterwards to magnet exciting coil, and magnet exciting coil generates magnetic field.
For stage body in vibration, exciting transformer is in running order always.It is generally known that due to core material, coupling, damage
Many reasons such as consumption, exciting transformer can generate very big calorific value, and the accumulation of heat will cause winding and burn out, and then influence
System stability.
Meanwhile in the shake table of high thrust, exciting power is up to tens kilowatts or more, since exciting current is larger, because
This power amplifier rectifying device needs to design very big current capacity, while wire cross-section area being required to increase therewith.Rectifying device and
The volume of radiator and the increase of sectional area of wire will cause amplifier power supply partial volume huge, cause production cost to have very big
Increase.
In addition, needing the enameled wire coiling magnet exciting coil big using sectional area since excitation voltage is low, exciting current is big.
In winding process, the excessive conducting wire enamel-cover coating of sectional area is easy to appear slight crack, causes the reduction of insulation degree, due to fever
Amount is big, even will appear the catastrophe failure of winding interturn short-circuit or winding shorted to earth during working long hours, to being
The reliability and service life of system bring adverse effect, to influence the service life of system.
Thus, how correctly the design power amplifier field power supply component in system design improves excitation circuit
Reliability, the volume for reducing power amplifier Energizing unit, the production cost for reducing system, improve the reliability and service life of system,
It becomes as the project to be researched and solved of the utility model.
Summary of the invention
The purpose of the utility model is to provide a kind of electric vibration table high voltage excitation units.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of electric vibration table high voltage excitation unit；Including rectifier, switching device, protection device and filter；
The input of the rectifier connects three phase mains, and the output of rectifier connects the magnet exciting coil of shake table, to the excitation
Coil exports direct current；
The switching device is connected between the rectifier and the three phase mains, for open and close three phase mains to institute
State the input of rectifier；The protection device corresponds to the input or/and output setting of the rectifier, for generating protection letter
Number, three phase mains is turned off to the input of the rectifier or/and is alarmed；
The filter is connected between the positive and negative anodes of the DC output end of the rectifier.
Related content in above-mentioned technical proposal is explained as follows:
1. in above scheme, the rectifier connects the three phase mains that Ue is 380V, the DC power supply for 1.35Ue is exported, by
Constant in exciting power, electric current is greatly reduced, therefore the diameter of magnetic force winding enameled wire is reduced significantly, reduce at
This while, also significantly reduces the enamel-cover coating in winding process and the probability of slight crack occurs.
2. in above scheme, the rectifier is three-phase bridge full-wave rectification component, the stable DC of 1.35Ue can get
Electricity output.
3. in above scheme, the rectifier is that thyristor type rectifies control module, output voltage can be made smoothly to be adjusted
Section obtains the direct current electricity output of maximum 1.35Ue.
4. in above scheme, the switching device includes breaker and contactor, the breaker is connected in the three-phase
Between power supply and the rectifier, the contactor is connected between the breaker and the rectifier.
5. in above scheme, the protection device includes electrothermal relay, and the electrothermal relay is connected in the switching device
Between the rectifier.When electric current is excessive, and temperature is caused to increase exceeded, electrothermal relay can produce overload signal, this crosses information carrying
Number it can be used for turning off three phase mains to the input of the rectifier or/and alarm.
6. further include spark killer in above scheme, the spark killer is connected in the electrothermal relay and described
Between rectifier.The spark killer specifically can be travel switch.
7. in above scheme, the protection device further includes fuse, and the fuse is series at institute at least provided with one
It states in the positive or negative pole route of the DC output end of rectifier.When electric current is excessive, and temperature is caused to increase exceeded, fuse can
Fuse signals are generated, which can be used for turning off three phase mains to the input of the rectifier or/and alarm.
The fuse and one normally closed or normal open switch electrically connects, when fuse blows, can generate an electric signal moment
Normally closed switch is opened, or turns off normal open switch, to generate fuse signals.Design is, it can be achieved that quick response, can match whereby
It closes electrothermal relay and duplicate protection is carried out to excitation unit.
8. in above scheme, the filter is made of concatenated resistance and capacitor, for rectifying higher hamonic wave, to rectification
Device plays a protective role.
9. further including radiating subassembly in above scheme, which corresponds to the rectifier setting.
10. in above scheme, the radiating subassembly includes radiator and cooling fan；The radiator is connected in described whole
It flows on device, the cooling fan corresponds to the radiator setting, provides cooling wind for it.
Since the DC voltage after rectification is high, exciting power is constant, therefore DC current is smaller, and radiating subassembly only needs small function
The fan of rate can meet radiating requirements, without water-cooling, simplify the structure of system to a certain extent, reduce into
This.
The working principle and advantage of the utility model are as follows:
A kind of electric vibration table high voltage excitation unit of the utility model；Including rectifier, switching device, protection device and
Filter；The input of rectifier connects three phase mains, and output connects the magnet exciting coil of shake table；Switching device is connected in rectifier and three
Between phase power supply, protection device corresponds to the input or/and output setting of rectifier；Filter is connected with the direct current output in rectifier
Between the positive and negative anodes at end.
Compared to existing technologies, the utility model does not use exciting transformer, and the power amplifier of shake table will come from
In power grid input voltage it is rectified, filtering after be directly output to magnet exciting coil.
The utility model has the following advantages that and effect:
1, exciting transformer is eliminated, reduces the workload of power amplifier assembly, reduces the calorific value of Energizing unit, is improved
System reliability, reduces the overall volume in amplifier power supply portion, significantly reduces cost；
2, under the premise of exciting power is constant, excitation voltage is improved, reduces exciting current, so that using sectional area
Smaller enameled wire coiling magnet exciting coil is achieved, and the reliability of magnet exciting coil greatly improved；
3, field power supply wire cross-section area is reduced, the difficulty of production and assembly is reduced, beauty is more easily done in cabling
It sees, it is often more important that cost is greatly reduced.
Detailed description of the invention
Attached drawing 1 is the electrical block diagram of the utility model embodiment；
Attached drawing 2 is the electrical block diagram (part) that the utility model embodiment protects device；
Attached drawing 3 is the schematic block circuit diagram of the utility model embodiment.
In the figures above: DS. three-phase bridge full-wave rectification component；QF. breaker；KM. contactor；TH. electrothermal relay；
SQ. travel switch；F1. first fuse；F2. second fuse；G1. positive route；G2. anode circuit；F3. it first normally opened opens
It closes；F4. the second normal open switch；R. resistance；C. capacitor；FAN. cooling fan.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment: referring to shown in attached drawing 1 ~ 3, a kind of electric vibration table high voltage excitation unit；Including rectifier, derailing switch
Part, protection device and filter.
The input of the rectifier connects three phase mains, and the output of rectifier connects the magnet exciting coil of shake table, to the excitation
Coil exports direct current；The switching device is connected between the rectifier and the three phase mains, is used for open and close three-phase electricity
Input of the source to the rectifier；The protection device corresponds to the input or/and output setting of the rectifier, for generating guarantor
Signal is protected, turn off three phase mains to the input of the rectifier or/and is alarmed；The filter is connected in the rectifier
DC output end positive and negative anodes between.
The rectifier connects the three phase mains that Ue is 380V, exports the DC power supply for 1.35Ue, not due to exciting power
Become, electric current is greatly reduced, therefore the diameter of magnetic force winding enameled wire is reduced significantly, also big while cost is reduced
Width reduces the enamel-cover coating in winding process and the probability of slight crack occurs.
Wherein, the rectifier is three-phase bridge full-wave rectification component DS, can get the stable DC electricity output of 1.35Ue.
The rectifier can also rectify control module (non-attached drawing shows) for thyristor type, and output voltage can be made to carry out smooth adjustment, obtained
The direct current electricity output of maximum 1.35Ue.
Wherein, the switching device includes circuit breaker Q F and contactor KM, and the circuit breaker Q F is connected in the three-phase electricity
Between source and the three-phase bridge full-wave rectification component DS, the contactor KM is connected in the circuit breaker Q F and the three-phase bridge
Between formula full-wave rectification component DS.
The protection device includes electrothermal relay TH, and the electrothermal relay TH is connected in the contactor KM and the three-phase
Between bridge full-wave rectifier component DS.When electric current is excessive, and temperature is caused to increase exceeded, electrothermal relay TH can produce overload signal,
The overload signal can be used for turning off three phase mains to the input of the three-phase bridge full-wave rectification component DS or/and alarm
(see figure 2).
Further include spark killer, specifically can be travel switch SQ, the travel switch SQ is connected in the hot relay
Between device TH and the three-phase bridge full-wave rectification component DS.
The protection device further includes fuse, there are two the fuse is set, first fuse F1 and second fuse
F2.The two is series at the positive route G1 and anode circuit of the DC output end of the three-phase bridge full-wave rectification component DS respectively
In G2.When electric current is excessive, and temperature is caused to increase exceeded, fuse F1, F2 can produce fuse signals, which can be used for
Three phase mains is turned off to the input of the three-phase bridge full-wave rectification component DS and carries out warning note.
The first fuse F1 is electrically connected with one first normal open switch F3；The second fuse F2 and one second is normally opened
Switch F4 is electrically connected；As shown in Fig. 2, can generate an electric signal moment makes normal open switch F3, F4 when fuse F1, F2 fusing
Shutdown, to generate fuse signals.Design is, it can be achieved that quick response, can cooperate electrothermal relay TH to carry out excitation unit whereby
Duplicate protection.
Wherein, the filter is made of concatenated resistance R and capacitor C, for rectifying higher hamonic wave, to whole three-phase bridge
Full-wave rectification component DS plays a protective role.
It wherein, further include radiating subassembly, which corresponds to the three-phase bridge full-wave rectification component DS setting.It is described
Radiating subassembly includes radiator (not drawing in figure) and cooling fan FAN；The radiator is connected in the three-phase bridge all-wave
On rectifier stack DS, the cooling fan FAN corresponds to the radiator setting, provides cooling wind for it.
Since the DC voltage after rectification is high, exciting power is constant, therefore DC current is smaller, and radiating subassembly only needs small function
The fan of rate can meet radiating requirements, without water-cooling, also play simplied system structure to a certain extent, reduce
The effect of cost.
Compared to existing technologies, the utility model does not use exciting transformer, and the power amplifier of shake table will come from
In power grid input voltage it is rectified, filtering after be directly output to magnet exciting coil.
The advantages of the utility model and effect: eliminating exciting transformer, reduces the workload of power amplifier assembly, reduces
The calorific value of Energizing unit, improves system reliability, reduces the overall volume in amplifier power supply portion, significantly reduces cost；
Under the premise of exciting power is constant, excitation voltage is improved, reduces exciting current, so that using the smaller enamel-cover of sectional area
Line coiling magnet exciting coil is achieved, and the reliability of magnet exciting coil greatly improved；Field power supply wire cross-section area is reduced,
The difficulty of production and assembly is reduced, beauty is more easily done in cabling, it is often more important that cost is greatly reduced.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. a kind of electric vibration table high voltage excitation unit, it is characterised in that:
Including rectifier, switching device, protection device and filter；
The input of the rectifier connects three phase mains, and the output of rectifier connects the magnet exciting coil of shake table, to the magnet exciting coil
Export direct current；
The switching device is connected between the rectifier and the three phase mains, for open and close three phase mains to described whole
Flow the input of device；The protection device corresponds to the input of the rectifier or/and output setting is closed for generating protection signal
Disconnected three phase mains is to the input of the rectifier or/and alarms；
The filter is connected between the positive and negative anodes of the DC output end of the rectifier.
2. excitation unit according to claim 1, it is characterised in that: the rectifier is three-phase bridge full-wave rectification group
Part.
3. excitation unit according to claim 1, it is characterised in that: the rectifier is the whole flow control module of thyristor type
Block.
4. excitation unit according to claim 1, it is characterised in that: the switching device includes breaker and contactor,
The breaker is connected between the three phase mains and the rectifier, the contactor be connected in the breaker with it is described
Between rectifier.
5. excitation unit according to claim 1, it is characterised in that: the protection device includes electrothermal relay, the heat
Relay is connected between the switching device and the rectifier.
6. excitation unit according to claim 5, it is characterised in that: it further include spark killer, the spark killer
It is connected between the electrothermal relay and the rectifier.
7. excitation unit according to claim 1, it is characterised in that: the protection device further includes fuse, described molten
Device break at least provided with one, is series in the positive or negative pole route of the DC output end of the rectifier.
8. excitation unit according to claim 1, it is characterised in that: the filter is by concatenated resistance and capacitance group
At.
9. excitation unit according to claim 1, it is characterised in that: further include radiating subassembly, which corresponds to institute
State rectifier setting.
10. excitation unit according to claim 9, it is characterised in that: the radiating subassembly includes radiator and cooling wind
Fan；The radiator is connected on the rectifier, and the cooling fan corresponds to the radiator setting, provides cooling for it
Wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821210007.6U CN208621276U (en) | 2018-07-27 | 2018-07-27 | Electric vibration table high voltage excitation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821210007.6U CN208621276U (en) | 2018-07-27 | 2018-07-27 | Electric vibration table high voltage excitation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208621276U true CN208621276U (en) | 2019-03-19 |
Family
ID=65707797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821210007.6U Active CN208621276U (en) | 2018-07-27 | 2018-07-27 | Electric vibration table high voltage excitation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208621276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082718A (en) * | 2020-08-13 | 2020-12-15 | 湖南盈晟电子科技有限公司 | Automatic excitation voltage adjusting method and system |
-
2018
- 2018-07-27 CN CN201821210007.6U patent/CN208621276U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082718A (en) * | 2020-08-13 | 2020-12-15 | 湖南盈晟电子科技有限公司 | Automatic excitation voltage adjusting method and system |
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