CN207367002U - A kind of device for preventing electric operator malfunction - Google Patents
A kind of device for preventing electric operator malfunction Download PDFInfo
- Publication number
- CN207367002U CN207367002U CN201721278233.3U CN201721278233U CN207367002U CN 207367002 U CN207367002 U CN 207367002U CN 201721278233 U CN201721278233 U CN 201721278233U CN 207367002 U CN207367002 U CN 207367002U
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- China
- Prior art keywords
- contactor
- electric operator
- breaker
- malfunction
- dcs controllers
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Abstract
The utility model discloses a kind of device for preventing electric operator malfunction, include DCS controllers, power supply, breaker and electric operator preventing the device of electric operator malfunction, power supply is connected with breaker, contactor is further included, contactor is connected with DCS controllers, breaker and electric operator respectively.The action of DCS monitoring control devices electric operators, by adding contactor, DCS controllers are when monitoring that malfunction occurs in electric operator, command information can be sent to the contactor immediately, the electric energy provided to electric operator so that contactor is cut off the power in time, in the case of ensuring in unit normal course of operation without distant place command signal, electric operator once motion is switched off its electrical source of power, effectively prevent the maloperation situation of electric operator on the spot, ensure the safe and stable operation of unit.A.C. contactor is simply added in original system, thus reduces the complexity of its structure.
Description
Technical field
Technology of Electrical Power Generation field is the utility model is related to, more particularly to a kind of dress for preventing electric operator malfunction
Put.
Background technology
Electric operator is with Stroke Control, torque protection, hand/electronic switching and manual operation, a distant place and controls on the spot
The basic functions such as system, can be by host computer, such as adjuster, programmable logic controller (PLC) (Programmable Logic
Controller, PLC) or dcs (Distributed Control System, DCS) provide electricity instruction
Signal is converted into corresponding displacement, drives final control section (such as valve, baffle etc.) to the position required by system, and then adjust
The procedure parameter such as section and control flow, temperature, pressure, realizes the process control of system.
At present, at home in large thermal power plant, electric operator application is very extensive, also has phase to its reliability
When high requirement.In traditional approach, electric operator realizes the connection with power supply by breaker, its structure diagram is as schemed
Shown in 1.But in power production process, electric operator in unit operation exist on the spot artificial maloperation or its
Home loop failure causes maloperation situation, causes to damage to equipment, even results in that unit is non-to stop, and has seriously affected generating set
Safe and stable operation, or even bring great economic loss.
As it can be seen that how effectively to solve the problems, such as electric operator malfunction, being that those skilled in the art are urgently to be resolved hurrily asks
Topic.
Utility model content
The purpose of this utility model is to provide a kind of device for preventing electric operator malfunction, can effectively solve electricity
Dynamic executing agency malfunction problem.
In order to solve the above technical problems, the utility model embodiment provides a kind of dress for preventing electric operator malfunction
Put, including DCS controllers, power supply, breaker and electric operator, the power supply are connected with the breaker, further include and connect
Tentaculum,
The contactor is connected with the DCS controllers, the breaker and the electric operator respectively, for according to
The command information sent according to the DCS controllers received, cuts off the electricity that the power supply is provided to the electric operator
Energy.
Optionally, the main contacts of the contactor is normally off.
Optionally, the DCS controllers are connected by digital output module with the contactor.
Optionally, the contactor is A.C. contactor.
Optionally, auxiliary contact are built-in with the contactor, the DCS controllers are connected with the auxiliary contact,
For monitoring the action of the auxiliary contact, the working status of the contactor is determined.
Optionally, digital quantity input module, the auxiliary contact of the digital quantity input module and the contactor are further included
Connection, for when detecting that the contactor breaks down, being prompted.
Optionally, the working mode change module of the electric operator is built-in with the DCS controllers, it is described
Working mode change module is connected with the contactor, for switching the operating mode of the electric operator.
Preventing the device of electric operator malfunction from including DCS controllers, electricity it can be seen from above-mentioned technical proposal
Source, breaker and electric operator, the power supply are connected with the breaker, further include contactor, the contactor difference
It is connected with the DCS controllers, the breaker and the electric operator.DCS controllers can monitor electronic execution machine
The action of structure, by adding contactor, DCS controllers when monitoring that malfunction occurs in electric operator, can immediately to
The contactor sends command information so that contactor can cut off the electricity that the power supply is provided to the electric operator in time
Can, it can be ensured that in unit normal course of operation without distant place command signal in the case of, electric operator once motion is just
Its electrical source of power is cut off, effectively prevents the maloperation situation of electric operator on the spot, ensures the safe and stable operation of unit.And
By way of increasing contactor, without being modified to electric operator inside, reduce and realize that electric operator is prevented
The complexity of malfunction function.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, drawings in the following description are only some embodiments of the utility model, general for this area
For logical technical staff, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of the device for preventing electric operator malfunction provided in the prior art；
Fig. 2 is a kind of structural representation for device for preventing electric operator malfunction that the utility model embodiment provides
Figure.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all real
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art without making creative work, institute
The every other embodiment obtained, belongs to scope of protection of the utility model.
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
Next, a kind of dress for preventing electric operator malfunction that the utility model embodiment is provided is discussed in detail
Put.Fig. 2 is a kind of structure diagram for device for preventing electric operator malfunction that the utility model embodiment provides, including
DCS controllers 10, power supply 11, breaker 12 and electric operator 13, the power supply 11 is connected with the breaker 12, at this
In device, contactor 14 is further included.The contactor 14 respectively with DCS controllers 10, breaker 12 and electric operator 13
Connection, for the command information sent according to the DCS controllers 10 that receive, cuts off the power supply 11 and electronic is held to described
The electric energy that row mechanism 13 provides.
Under normal operating conditions, command information of the electric operator 13 according to the host computer transmission of reception, to perform phase
The action answered.In view of the influence of external interference factor or internal system factor, it may can also trigger electric operator 13 and hold
Row relevant action, so as to cause the malfunction of electric operator 13.DCS controllers 10 have the function of it is powerful, in DCS controllers
Faulty action preventing control logic can be increased in 10, realize the monitoring to 13 malfunction state of electric operator.
DCS controllers 10 can be connected by digital output module with the contactor 14, once electric operator
13 there is malfunction, then can send command information to contactor 14 at once.
In the utility model embodiment, contactor 14 can use A.C. contactor.Include master in contactor 14
Contact, the main contacts refer to the contact that connection is realized by breaker 12 and power supply 11,
Contactor 14, which has, disconnects and closes two kinds of working statuses, under normal operating conditions, namely electric operator 13
In the case of there is not malfunction, main contacts is in normally off.In the case where there is malfunction in electric operator 13, when
DCS controllers 10 to contactor 14 by sending command information, and the main contacts of control contactor 14 is off, so as to cut
The electric energy that power-off source 11 is provided to electric operator 13.
DCS controllers 10 send command information to contactor 14, and control contactor 14 goes off state by closure state,
But whether contactor 14 has completed the conversion of working status, DCS controllers 10 can not know that contactor 14 is receiving
After the command information that DCS controllers 10 are sent, timely switch operating state is for preventing 13 malfunction of electric operator to pass
It is important.Therefore, in order to enable DCS controllers 10 can know the change of 14 working status of contactor, correspondingly, can contact
Built-in auxiliary contact in device 14, the DCS controllers 10 are connected with the auxiliary contact, and the action of auxiliary contact can reflect
The actual working status of contactor 14, DCS controllers 10 can determine described connect by monitoring the actions of the auxiliary contact
The working status of tentaculum 14.
By setting auxiliary contact, DCS controllers 10 can be caused to understand the working status of contactor 14 in time, further
Improve the reliability for realizing electric operator faulty action preventing.
Preventing the device of electric operator malfunction from including DCS controllers, electricity it can be seen from above-mentioned technical proposal
Source, breaker and electric operator, the power supply are connected with the breaker, further include contactor, the contactor difference
It is connected with the DCS controllers, the breaker and the electric operator.DCS controllers can monitor electronic execution machine
The action of structure, by adding contactor, DCS controllers when monitoring that malfunction occurs in electric operator, can immediately to
The contactor sends command information so that contactor can cut off the electricity that the power supply is provided to the electric operator in time
Can, it can be ensured that in unit normal course of operation without distant place command signal in the case of, electric operator once motion is just
Its electrical source of power is cut off, effectively prevents the maloperation situation of electric operator on the spot, ensures the safe and stable operation of unit.And
By way of increasing contactor, without being modified to electric operator inside, reduce and realize that electric operator is prevented
The complexity of malfunction function.
In the utility model embodiment, 13 maloperation situation of electric operator is reduced according to the contactor 14 set
Probability of happening, the normal operation of contactor 14 is most important, so, corresponding digital quantity input module can be set, to contact
The operating status of device 14 is detected.Specifically, the auxiliary contact of digital quantity input module and the contactor 14 can be connected
Connect, for when detecting that the contactor 14 breaks down, being prompted.
In the utility model embodiment, for the operating mode of electric operator 13, " normal mode can be classified as
Formula " and two kinds of " maintenance model ".Under " normal mode ", if there is malfunction in electric operator 13, DCS controllers 10
Quickly command information can be sent to contactor 14 so that contactor 14 can cut off the electrical source of power of electric operator 13；
Under " maintenance model ", then the faulty action preventing function of electric operator 13 is not started, namely the main contacts of contactor 14 is located always
In closure state.
In order to realize the switching of 13 two kinds of operating modes of electric operator, correspondingly, can be in the DCS controllers 10
In the built-in working mode change module on the electric operator 13, the working mode change module contacts with described
Device 14 connects, for switching the operating mode of the electric operator 13.
The device for preventing electric operator malfunction that the utility model embodiment provides can be applied to the main feedwater of boiler
System, includes electric operator 13 in the boiler main feed system, and electric operator 13 is connected with contactor 14, leads to
The closed and disconnected of contactor 14 is crossed, electric operator 13 is can effectively prevent and produces malfunction, so as to ensure to boiler master
The accurate of electric operator of feeding water controls.
Above to a kind of device for preventing electric operator malfunction provided by the utility model and boiler master to water system
System is described in detail.Each embodiment is described by the way of progressive in specification, and each embodiment stresses
The difference with other embodiment, between each embodiment identical similar portion mutually referring to.It is public for embodiment
For the device opened, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related part is referring to side
Method part illustrates.It should be pointed out that for those skilled in the art, the utility model original is not being departed from
On the premise of reason, some improvement and modification can also be carried out to the utility model, these are improved and modification also falls into this practicality newly
In type scope of the claims.
Claims (7)
1. a kind of device for preventing electric operator malfunction, including DCS controllers, power supply, breaker and electric operator,
The power supply is connected with the breaker, it is characterised in that contactor is further included,
The contactor is connected with the DCS controllers, the breaker and the electric operator respectively, is connect for foundation
The command information that the received DCS controllers are sent, cuts off the electric energy that the power supply is provided to the electric operator.
2. device according to claim 1, it is characterised in that the main contacts of the contactor is normally off.
3. the apparatus of claim 2, it is characterised in that the DCS controllers pass through digital output module and institute
State contactor connection.
4. device according to claim 3, it is characterised in that the contactor is A.C. contactor.
5. device according to claim 4, it is characterised in that auxiliary contact, the DCS are built-in with the contactor
Controller is connected with the auxiliary contact, for monitoring the action of the auxiliary contact, determines the working status of the contactor.
6. device according to claim 5, it is characterised in that further include digital quantity input module, the digital quantity input
Module is connected with the auxiliary contact of the contactor, for when detecting that the contactor breaks down, being prompted.
7. device according to claim 6, it is characterised in that the electronic execution is built-in with the DCS controllers
The working mode change module of mechanism, the working mode change module is connected with the contactor, described electronic for switching
The operating mode of executing agency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278233.3U CN207367002U (en) | 2017-09-29 | 2017-09-29 | A kind of device for preventing electric operator malfunction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721278233.3U CN207367002U (en) | 2017-09-29 | 2017-09-29 | A kind of device for preventing electric operator malfunction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207367002U true CN207367002U (en) | 2018-05-15 |
Family
ID=62347406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721278233.3U Active CN207367002U (en) | 2017-09-29 | 2017-09-29 | A kind of device for preventing electric operator malfunction |
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| Country | Link |
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| CN (1) | CN207367002U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505795A (en) * | 2019-01-11 | 2019-03-22 | 华电国际电力股份有限公司邹县发电厂 | Controlled blade of forced-draft-fan circuit breaking protective system and its method |
| CN112764403A (en) * | 2021-01-15 | 2021-05-07 | 中国神华能源股份有限公司国华电力分公司 | Actuating mechanism control system and method |
-
2017
- 2017-09-29 CN CN201721278233.3U patent/CN207367002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505795A (en) * | 2019-01-11 | 2019-03-22 | 华电国际电力股份有限公司邹县发电厂 | Controlled blade of forced-draft-fan circuit breaking protective system and its method |
| CN112764403A (en) * | 2021-01-15 | 2021-05-07 | 中国神华能源股份有限公司国华电力分公司 | Actuating mechanism control system and method |
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