CN203867634U - Steam turbine rotating speed two-out-of-three shutdown protecting device - Google Patents
Steam turbine rotating speed two-out-of-three shutdown protecting device Download PDFInfo
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- CN203867634U CN203867634U CN201420317119.7U CN201420317119U CN203867634U CN 203867634 U CN203867634 U CN 203867634U CN 201420317119 U CN201420317119 U CN 201420317119U CN 203867634 U CN203867634 U CN 203867634U
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- chaser
- dry contact
- contact
- rotating speed
- power supply
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Abstract
The utility model belongs to the field of steam turbine shutdown protection, particularly relates to a steam turbine rotating speed two-out-of-three shutdown protecting device, and aims to solve the problems of low reliability and incapability of visually judging whether rotating speed of each branch is in a failure or not due to the fact that an existing two-out-of-three steam turbine rotating speed protecting device adopts software for realization. The device comprises three rotating speed cards, six shutdown dry contacts and a shutdown state output contact, each rotating speed card outputs two shutdown signals to the six shutdown dry contacts, the first shutdown dry contact J1-1 and the second shutdown dry contact J1-2 are serially connected to form a first serial-connection branch, the third shutdown dry contact J2-1 and the fourth shutdown dry contact J2-2 are serially connected to form a second serial-connection branch, the fifth shutdown dry contact J3-1 and the sixth shutdown dry contact J3-2 are serially connected to form a third serial-connection branch, and the first serial-connection branch, the second serial-connection branch and the third serial-connection branch are serially connected to be parallelly connected with the shutdown state output contact. The steam turbine rotating speed two-out-of-three shutdown protecting device can be used in a steam turbine.
Description
Technical field
The utility model belongs to steam turbine chaser protection field.
Background technique
Current turbine speed protective gear is that rotating speed three gets two, and system comprises three road rotating speed cards, and every road rotating speed enters a rotating speed card, and three road rotating speeds three are got two chaser logics and realized by software at system negative.The each rotating speed card of the type system is connected by connector assembly with system, and there are the following problems 1, running environment humidity or dust is bad causes connector assembly bad connection, and 2, to vibrate ambassador's connector assembly in transportation process loosening, causes bad connection; The type system can only show at most a road rotating speed, cannot the every road of intuitive judgment rotating speed fault whether; System three is got two chaser logics and is realized by software, and reliability is determined by system backplane; Two-way 220VAC Power supply is by what switch to realize, and system exists the risk of electrical source exchange power-off.
Model utility content
The utility model is to get two steam turbine rotating speed protectors and adopt softwares to realize poor reliability in order to solve existing three, and cannot the every road of intuitive judgment rotating speed the problem of fault whether, the utility model provides a kind of turbine speed three to get two chaser protective gears.
Turbine speed three is got two chaser protective gears, and it comprises three road rotating speed cards, six tunnel chaser dry contacts and a chaser State-output contact,
Described every road rotating speed card, for accept the turbine speed sine wave signal recording of pop one's head in by tenminal block, and according to the number of teeth calculation process of steam turbine measure speed gears, form turbine speed demonstration, three road rotating speed cards are respectively exported two-way chaser signal Gei Liu road chaser dry contact respectively
Described six tunnel chaser dry contacts comprise the first chaser dry contact J
1-1, the second chaser dry contact J
1-2, the 3rd chaser dry contact J
2-1, the forth jump machine dry contact J
2-2, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2;
Described the first chaser dry contact J
1-1with the second chaser dry contact J
1-2be connected into the first series arm, described the 3rd chaser dry contact J
2-1with the forth jump machine dry contact J
2-2be connected into the second series arm, described the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2be connected into the 3rd series arm, after three series arm parallel connections, be connected in parallel with chaser State-output contact.
The beneficial effects of the utility model are: the utility model comprises three road rotating speed Ka He six tunnel chaser dry contacts, rotating speed card is connected by tenminal block with steam turbine, every road rotating speed enters a rotating speed card, two chaser signals of every road rotating speed card output, be connected with two chaser dry contacts respectively, by the first chaser dry contact J
1-1with the second chaser dry contact J
1-2the composition first via, the 3rd chaser dry contact J
2-1with the forth jump machine dry contact J
2-2form the second tunnel, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2composition Third Road, two-way is got on three tunnels, and three get two chaser logics realizes by hardwire, and its reliability is got two chaser protective gears than three of existing employing software realization and is enhanced about more than once; And system dead electricity Shi Mei road chaser dry contact is closed state, while guaranteeing system dead electricity, in chaser state, You San road rotating speed card forms Liu road tach signal and can show simultaneously, therefore, state that can the every road of real-time inspection chaser State-output contact, judges the fault of every road rotating speed.It can be used in steam turbine.
Brief description of the drawings
Fig. 1 is the logical schematic that the turbine speed three described in embodiment one is got two chaser protective gears.
Fig. 2 is the principle schematic of the power supply system described in embodiment two.
Embodiment
Embodiment one: illustrate present embodiment with reference to Fig. 1, the turbine speed three described in present embodiment is got two chaser protective gears, and it comprises three road rotating speed cards, six tunnel chaser dry contacts and a chaser State-output contact,
Described every road rotating speed card, for accept the turbine speed sine wave signal recording of pop one's head in by tenminal block, and according to the number of teeth calculation process of steam turbine measure speed gears, form turbine speed demonstration, three road rotating speed cards are respectively exported two-way chaser signal Gei Liu road chaser dry contact respectively
Described six tunnel chaser dry contacts comprise the first chaser dry contact J
1-1, the second chaser dry contact J
1-2, the 3rd chaser dry contact J
2-1, the forth jump machine dry contact J
2-2, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2;
Described the first chaser dry contact J
1-1with the second chaser dry contact J
1-2be connected into the first series arm, described the 3rd chaser dry contact J
2-1with the forth jump machine dry contact J
2-2be connected into the second series arm, described the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2be connected into the 3rd series arm, after three series arm parallel connections, be connected in parallel with chaser State-output contact.
In present embodiment, the number of teeth of the steam turbine measure speed gears of each rotating speed card can arrange arbitrarily; The steam turbine chaser rotating speed of each rotating speed card can arrange arbitrarily.
In present embodiment, the chaser tach signal that each rotating speed card provides is chaser state contact, and it is closed state when system dead electricity, while guaranteeing system dead electricity in chaser state.
Described chaser dry contact is equivalent to a normal open switch.
First via rotating speed card output two-way chaser signal is given respectively the first chaser dry contact J
1-1with the second chaser dry contact J
1-2, the second road rotating speed card output two-way chaser signal is given respectively the 3rd chaser dry contact J
2-1with the forth jump machine dry contact J
2-2, the second road rotating speed card output two-way chaser signal is given respectively the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2.
Present embodiment San road rotating speed card is the rotating speed card that model is CSB-II, and the tachometric survey scope of this rotating speed card is 1-9999RPM, and the rotating speed testing precision of this rotating speed card is n≤± 1RPM, and the tachometric survey cycle of this rotating speed card is T1≤5ms; And the steam turbine chaser rotating speed of present embodiment can arrange arbitrarily, and dead electricity stores.
Embodiment two: illustrate present embodiment with reference to Fig. 2, present embodiment is the turbine speed three described in embodiment one to be got to two chaser protective gears be described further, and in present embodiment, it also comprises power supply system,
Described power supply system comprises a 220V ac power supply 2, the 2nd 220V ac power supply 3, an AC-DC power module 4, the 2nd AC-DC power module 5 and redundant processor 6,
The power supply output terminal of the one 220V ac power supply 2 is connected with the ac power input end of an AC-DC power module 4, and the DC power output end of an AC-DC power module 4 is connected with one group of DC power supply signal input part of redundant processor 6;
The power supply output terminal of the 2nd 220V ac power supply 3 is connected with the ac supply signal input end of the 2nd AC-DC power module 5; the DC power output end of the 2nd AC-DC power module 5 is connected with another DC power supply signal input part of redundant processor 6, and the DC power signal output terminal of redundant processor 6 provides DC supply for getting two chaser protective gears to turbine speed three.
In power supply system in present embodiment; comprise two cover DC power-supply systems; described two cover DC power-supply systems form redundancy electric power supply system; working power is provided to the device in the chaser protective gear of present embodiment by redundant processor 6; synchronization, redundant processor 6 synchronizations only access a set of DC power-supply system, in the time that this DC power-supply system breaks down; switch to another set of DC power-supply system, and then ensure the normal work of the chaser protective gear of present embodiment.
Embodiment three: present embodiment is the turbine speed three described in embodiment one to be got to two chaser protective gears be described further; in present embodiment; chaser State-output contact is normal opened contact, and capacity is 220V ac power supply, and electric current is 4A.
Embodiment four: present embodiment is the turbine speed three described in embodiment one to be got to two chaser protective gears be described further, in present embodiment, the first chaser dry contact J
1-1, the second chaser dry contact J
1-2, the 3rd chaser dry contact J
2-1, the forth jump machine dry contact J
2-2, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2actuation time be all less than or equal to 10ms.
Claims (4)
1. turbine speed three is got two chaser protective gears, and it comprises three road rotating speed cards, described every road rotating speed card; for accept the turbine speed sine wave signal recording of popping one's head in by tenminal block; and according to the number of teeth calculation process of steam turbine measure speed gears, form turbine speed and show
It is characterized in that, it also comprises six tunnel chaser dry contacts and a chaser State-output contact,
Three road rotating speed cards are respectively exported two-way chaser signal Gei Liu road chaser dry contact respectively,
Described six tunnel chaser dry contacts comprise the first chaser dry contact J
1-1, the second chaser dry contact J
1-2, the 3rd chaser dry contact J
2-1, the forth jump machine dry contact J
2-2, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2;
Described the first chaser dry contact J
1-1with the second chaser dry contact J
1-2be connected into the first series arm, described the 3rd chaser dry contact J
2-1with the forth jump machine dry contact J
2-2be connected into the second series arm, described the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2be connected into the 3rd series arm, after three series arm parallel connections, be connected in parallel with chaser State-output contact.
2. turbine speed three according to claim 1 is got two chaser protective gears, it is characterized in that, it also comprises power supply system,
Described power supply system comprises a 220V ac power supply (2), the 2nd 220V ac power supply (3), an AC-DC power module (4), the 2nd AC-DC power module (5) and redundant processor (6)
The power supply output terminal of the one 220V ac power supply (2) is connected with the ac power input end of an AC-DC power module (4), and the DC power output end of an AC-DC power module (4) is connected with one group of DC power supply signal input part of redundant processor (6);
The power supply output terminal of the 2nd 220V ac power supply (3) is connected with the ac supply signal input end of the 2nd AC-DC power module (5); the DC power output end of the 2nd AC-DC power module (5) is connected with another DC power supply signal input part of redundant processor (6), and the DC power signal output terminal of redundant processor (6) provides DC supply for getting two chaser protective gears to turbine speed three.
3. turbine speed three according to claim 1 is got two chaser protective gears, it is characterized in that, chaser State-output contact is normal opened contact, and capacity is 220V ac power supply, and electric current is 4A.
4. turbine speed three according to claim 1 is got two chaser protective gears, it is characterized in that the first chaser dry contact J
1-1, the second chaser dry contact J
1-2, the 3rd chaser dry contact J
2-1, the forth jump machine dry contact J
2-2, the fifth jump machine dry contact J
3-1with the 6th chaser dry contact J
3-2actuation time be all less than or equal to 10ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317119.7U CN203867634U (en) | 2014-06-13 | 2014-06-13 | Steam turbine rotating speed two-out-of-three shutdown protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420317119.7U CN203867634U (en) | 2014-06-13 | 2014-06-13 | Steam turbine rotating speed two-out-of-three shutdown protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867634U true CN203867634U (en) | 2014-10-08 |
Family
ID=51648603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420317119.7U Active CN203867634U (en) | 2014-06-13 | 2014-06-13 | Steam turbine rotating speed two-out-of-three shutdown protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033193A (en) * | 2014-06-13 | 2014-09-10 | 哈尔滨汽轮机厂有限责任公司 | Two-out-of-three rotation speed jumping protective device for steam turbine |
| CN105909324A (en) * | 2016-06-30 | 2016-08-31 | 四川东方电气自动控制工程有限公司 | 3-2 voting and 4-2 hydraulic shielding steam turbine protection device |
-
2014
- 2014-06-13 CN CN201420317119.7U patent/CN203867634U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033193A (en) * | 2014-06-13 | 2014-09-10 | 哈尔滨汽轮机厂有限责任公司 | Two-out-of-three rotation speed jumping protective device for steam turbine |
| CN105909324A (en) * | 2016-06-30 | 2016-08-31 | 四川东方电气自动控制工程有限公司 | 3-2 voting and 4-2 hydraulic shielding steam turbine protection device |
| CN105909324B (en) * | 2016-06-30 | 2017-11-07 | 四川东方电气自动控制工程有限公司 | Two from three voting, four take the steam turbine protection device that two hydraulic pressure interdict |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |