CN202596973U - Automatic stopping device for small hydraulic generator set - Google Patents
Automatic stopping device for small hydraulic generator set Download PDFInfo
- Publication number
- CN202596973U CN202596973U CN2012202168395U CN201220216839U CN202596973U CN 202596973 U CN202596973 U CN 202596973U CN 2012202168395 U CN2012202168395 U CN 2012202168395U CN 201220216839 U CN201220216839 U CN 201220216839U CN 202596973 U CN202596973 U CN 202596973U
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- generator
- closed contact
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- switch
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- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 11
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000010181 polygamy Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Control Of Water Turbines (AREA)
Abstract
The utility model discloses an automatic stopping device for a small hydraulic generator set. The automatic stopping device comprises a direct current power supply, a direct current motor, a relay and a starting switch, and further comprises two normal closed contacts, wherein one normal closed contact serves as the normal closed contact I of a load switch of an outlet of a generator, and another one serves as the normal closed contact II of a probing switch for stream passing through the generator; the relay comprises a relay coil and a normal open contact; the positive input end and the negative input end of the direct current motor are connected in series with a normal open contact and then formed to be motor hoops which are connected to the positive output end and the negative output end of the direct current power; the direct current motor is connected with a speed controller of the small hydraulic generator set for switching the opening degree of a guide blade of the speed controller; and the relay coil, the normal closed contact I and the normal closed contact II are connected in series with the starting switch and then formed to be control loops which are connected to the direct current power. With adoption of the automatic stopping device disclosed by the utility model, the automatic stopping function of a manual speed controller of a hydropower station is achieved, and all dangers due to 'galloping' caused by load shedding suddenly happening to a generator in running can be avoided, the service life of the generator is prolonged, and the labor and the materials are saved.
Description
Technical field
The utility model relates to a kind of automatic shutdown unit that is used for the small hydro turbine group.
Background technique
Single-machine capacity is in 500KW and following small hydro turbine group; No matter be from being designed into production; To use, what the speed control system of water turbine institute adapted generally adopted is hand governor from user's type selecting, and this speed regulator has design and produces simple, little investment; Advantages such as maintenance is convenient, but maximum shortcoming is to carry out automatic shutdown.When urgency takes place when, the removal of load of tripping suddenly of generator connecting in parallel with system switch, unit will the utmost point in the short time rotating speed raise rapidly, surpass the rated speed several times, be commonly called as " driving ".At this moment; If the operations staff can not in time close hydrogovernor and block current; The lighter damages unit bearing or field coil, and weight person will directly destroy a whole set of hydraulic generator unit equipment, and this is all very big potential safety hazards that adopt the hand governor water power plant to exist.The way that generally addresses this problem has two kinds:
The one, directly select YT type mechanical-hydraulic automatic speed governor for use.But this speed regulator purchasing price is high, at present according to a preliminary estimate market price at least 80,000 yuan/more than the platform, operation maintenance, service technique require high, each year maintenance expenses also big.The small hydropower station of unit below 500KW adopts this way not only not have real value, and increased the power station investment, increased the pay off period in power station;
The 2nd, polygamy is put the operations staff in the plant generator running, takes " machine one people " 24 hours management methods on duty.Just when plant generator, it is uninterruptedly on duty that each water turbine all will be established a people 24 hours specially, immediately closes speed regulator in case urgent " driving " takes place " machine one people ".This way was both original, and was simple again, and the caller station little investment is paid and operational and administrative expenses but in fact increased generator operation personnel wage outwardly, has also increased the destructive rate of equipment simultaneously.
Therefore, be necessary to work out the automatic shutdown unit of a kind of small hydro turbine group, can not close this difficult problem of water turbine automatically in the time of can solving " driving ", realized that a people manages the multimachine generator operation.
Summary of the invention
In view of this; The purpose of the utility model provides the automatic shutdown unit of a kind of small hydro turbine group; Not only possess characteristics such as little investment, technology is simple, maintenance is convenient; And " driving " harm of having avoided the unexpected removal of load of generator to take place fully, increased the Security and the economic benefit in power station greatly, shortened the power station time limit of recouping capital outlay.
The purpose of the utility model realizes through following technological scheme:
The automatic shutdown unit of small hydro turbine group; Comprise DC electrical source, direct current generator, relay and enable switch, also comprise two normally-closed contacts, one of them is the normally-closed contact I of generator outlet on-load switch; When outlet met switch trip, this normally-closed contact I opened; Another is the normally-closed contact II that flows through the current search switch of generator, and when not having current to flow through, this normally-closed contact II opens;
Said relay comprises relay coil and normally open contact; Electric motor loop is formed in the positive and negative electrode input end of said direct current generator and normally open contact series connection back; Insert the positive and negative electrode output terminal of DC electrical source; Said direct current generator is connected to the speed regulator of small hydro turbine, is used to close the guide vane opening of speed regulator;
Control loop is formed in said relay coil, normally-closed contact I, normally-closed contact II and enable switch series connection back, inserts DC electrical source.
The beneficial effect of the utility model is:
1. the use of the utility model; Not only realized the water power plant hand governor function of shutting down automatically, all " drivings " harm of also having avoided the unexpected removal of load of operating generator to be taken place have simultaneously prolonged working life of generator; Adopt this technology for installation in the water power plant more than two especially; Can significantly reduce operations staff's number of configured, practice thrift labor wage, increase the power station economic benefit;
2. when generator met emergency shutdown, the field suppression protection switch broke off, even under the situation that generator does not generate electricity, also can carry out automatic shutdown, and automaticity is higher;
3. can install this covering device additional not changing under the former hand governor main equipment situation, easy to maintenance, this device can install additional in the production process of hand governor simultaneously, also can in building a power station, transform.
4. the former generator set that does not have the automatic Regulation function need not increase generator automatic voltage regulation system and can directly use yet, and the generator set of original automatic Regulation function is used and can realizes not dead electricity function fully of full station; Reforming cost is low, and the time is short.
Other advantages, target and the characteristic of the utility model will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from the practice of the utility model, obtain instruction to investigating of hereinafter.The target of the utility model and other advantages can realize and obtain through following specification and claims.
Description of drawings
For the purpose, technological scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is the electrical wiring schematic representation of the utility model;
Fig. 2 is the working principle schematic representation of the utility model.
Embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.Should be appreciated that preferred embodiment has been merely explanation the utility model, rather than in order to limit the protection domain of the utility model.
Existing hand governor hydraulic turbine generator all is to move the size adjustment that the handwheel dish carries out guide vane opening through manual work, and no matter the power station all is manually accomplish from the shutdown of starting shooting.And the utility model is exactly on original hand governor, installs the auto shutdown system of a cover DC MOTOR CONTROL additional, realizes in emergency circumstances shutting down automatically.
As shown in Figure 1; The automatic shutdown unit of small hydro turbine group of the utility model; Comprise DC electrical source, direct current generator, relay and enable switch SA, also comprise two normally-closed contacts, one of them is the normally-closed contact I of generator outlet on-load switch; When outlet met switch trip, this normally-closed contact I KM opened; Another is the normally-closed contact II XK that flows through the current search switch of generator, and when not having current to flow through, this normally-closed contact II XK opens;
Said relay comprises relay coil ZJ1 and normally open contact ZJ2; Electric motor loop is formed in the positive and negative electrode input end of said direct current generator and normally open contact ZJ2 series connection back; Insert the positive and negative electrode output terminal of DC electrical source; Direct current generator M is connected to the speed regulator of small hydro turbine, is used to close the guide vane opening of speed regulator;
Control loop is formed in relay coil ZJ1, normally-closed contact I KM, normally-closed contact II XK and enable switch SA series connection back, inserts DC electrical source.
As shown in Figure 2, the working procedure of the utility model is:
1. start: boot program is the same with original manual boot program: manual unlocking hydrogovernor guide vane opening, and---the question generator rotating speed rises near rated speed, and------generator is built pressure, and---being incorporated into the power networks when question generator voltage, frequency and synchronized---closed degaussing switch after the completion of being incorporated into the power networks to connect the energized circuit degaussing switch; Connect enable switch (SA) simultaneously, make auto shutdown system handle wait state;
2. shutdown: the shutdown under the normal working can utilize auto shutdown system, also can take original manual closedown method.Under the abnormal condition, as long as generator outlet on-load switch tripping operation (KM contacting), auto shutdown system will be devoted oneself to work automatically, close the guide vane opening of speed regulator rapidly, and up to blocking current (disconnection of XK switch) fully, generator shuts down.
Adopt this device, not only realized the water power plant hand governor function of shutting down automatically, all " drivings " harm of also having avoided the unexpected removal of load of operating generator to be taken place have simultaneously prolonged working life of generator.Adopt this technology for installation in the water power plant more than two especially, can significantly reduce operations staff's number of configured, practice thrift labor wage, increase the power station economic benefit.The utlity model has higher market value, can realize fully producing in batches.
Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (1)
1. the automatic shutdown unit of small hydro turbine group; It is characterized in that: said device comprises DC electrical source, direct current generator, relay and enable switch; Also comprise two normally-closed contacts; One of them is the normally-closed contact I of generator outlet on-load switch, and when outlet met switch trip, this normally-closed contact I opened; Another is the normally-closed contact II that flows through the current search switch of generator, and when not having current to flow through, this normally-closed contact II opens;
Said relay comprises relay coil and normally open contact; Electric motor loop is formed in the positive and negative electrode input end of said direct current generator and normally open contact series connection back; Insert the positive and negative electrode output terminal of DC electrical source; Said direct current generator is connected to the speed regulator of small hydro turbine, is used to close the guide vane opening of speed regulator;
Control loop is formed in said relay coil, normally-closed contact I, normally-closed contact II and enable switch series connection back, inserts DC electrical source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202168395U CN202596973U (en) | 2012-05-15 | 2012-05-15 | Automatic stopping device for small hydraulic generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202168395U CN202596973U (en) | 2012-05-15 | 2012-05-15 | Automatic stopping device for small hydraulic generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596973U true CN202596973U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202168395U Expired - Fee Related CN202596973U (en) | 2012-05-15 | 2012-05-15 | Automatic stopping device for small hydraulic generator set |
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| CN (1) | CN202596973U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321826A (en) * | 2013-07-02 | 2013-09-25 | 重庆大唐国际武隆水电开发有限公司 | Hydraulic generator overspeed protection device and control method thereof |
| CN104242243A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel protection device for non-normal shutdown of hydraulic generator |
| CN113339183A (en) * | 2021-06-10 | 2021-09-03 | 江西省港航建设投资集团有限公司 | Shutdown control method and device for hydroelectric generating set and shutdown control equipment |
-
2012
- 2012-05-15 CN CN2012202168395U patent/CN202596973U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242243A (en) * | 2013-06-09 | 2014-12-24 | 成都昊地科技有限责任公司 | Novel protection device for non-normal shutdown of hydraulic generator |
| CN103321826A (en) * | 2013-07-02 | 2013-09-25 | 重庆大唐国际武隆水电开发有限公司 | Hydraulic generator overspeed protection device and control method thereof |
| CN103321826B (en) * | 2013-07-02 | 2015-10-21 | 重庆大唐国际武隆水电开发有限公司 | A kind of hydraulic turbine generator overspeed protection circuit and controlling method thereof |
| CN113339183A (en) * | 2021-06-10 | 2021-09-03 | 江西省港航建设投资集团有限公司 | Shutdown control method and device for hydroelectric generating set and shutdown control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121220 Address after: 401520 Chongqing Hechuan Rui Road No. 167 Patentee after: Chongqing Hechuan District Power Supply Co., Ltd. Patentee after: State Grid Corporation of China Address before: 401520 Chongqing Hechuan Rui Road No. 167 Patentee before: Chongqing Hechuan District Power Supply Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20170515 |