CN203655513U - Nozzle - Google Patents
Nozzle Download PDFInfo
- Publication number
- CN203655513U CN203655513U CN201320868685.2U CN201320868685U CN203655513U CN 203655513 U CN203655513 U CN 203655513U CN 201320868685 U CN201320868685 U CN 201320868685U CN 203655513 U CN203655513 U CN 203655513U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- piston rod
- piston
- needle
- spray
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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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- Nozzles (AREA)
Abstract
The utility model relates to a nozzle, which comprises a nozzle body and a spray needle, wherein the nozzle body is provided with at least one spray hole; the spray needle is used for controlling water flow to pass through the at least one spray hole for spraying; the spray needle is arranged at the front end of the nozzle body. The nozzle is characterized by also comprising a piston assembly; the piston assembly is used for driving the spray needle to do reciprocating motion and comprises a piston rod and a piston which are arranged in an integrated way; the piston rod is arranged in the spray needle and is fixedly connected with the front end of the spray needle so as to push the spray needle to do reciprocating motion. The piston rod and the piston are designed into a whole, the assembly error of the two parts is avoided, due to the concentricity design of the piston and the piston rod, the lateral friction force is reduced, the water leakage risk when the nozzle is cut off is greatly reduced, the service life of the nozzle is prolonged, the stability of water flow direction of the nozzle is improved, and the stability of electricity generation output frequency of a generator is ensured.
Description
Technical field
The utility model relates to a kind of nozzle, relates in particular to a kind of nozzle for hydroelectricity generator, belongs to hydroelectric facility technical field.
Background technique
In hydroelectric facility, nozzle is extremely important parts, is a device that current fluid power can be converted into mechanical energy.The similar hydraulic jack technology of its design principle, the folding size that promotes nozzle by piston rod is controlled the speed of current, thereby promotes the rotation of hydraulic turbine generator.Common nozzle arrangements is piston rod and piston split-type design, and both are threaded connection again.Shown in Figure 1, piston rod 2 ' of the prior art passes through screw thread in succession with piston 3 ', and both coordinate tightness to install the assurance such as Sealing 6 ', O type circle 8 ' additional, seals by tight lock screw 11 ' and plug 12 ' at cylinder bottom 10 '.
But this design is limited to the manufacture machining error of component, add the assembly error between piston rod 2 ' and piston 3 ', the accumulation of error will easily cause the concentricity after piston 3 ' coordinates with piston rod 2 ' not high, thereby cause the bias that coordinates of nozzle and nozzle needle, make the flow direction shakiness of current, the stability of impact generating.In addition, although the nozzle of this kind of split-type design has the design of lock screw 11 ' and plug 12 ' in bottom, in cut-off, still easily there is the phenomenon of leaking.
How to improve piston and piston rod concentricity, avoid the nozzle water leakage phenomenon in when cut-off, become the emphasis direction that inventor studies.
Model utility content
The purpose of this utility model is to improve the concentricity of piston and piston rod, the water leakage phenomenon while avoiding nozzle cut-off.
For achieving the above object, the utility model provides a kind of nozzle, comprises
There is the nozzle body of at least one spray-hole,
The nozzle needle spraying by this at least one spray-hole in order to control current, described nozzle needle is arranged at nozzle body front end,
It is characterized in that, it also comprises ordering about the reciprocating piston assembly of nozzle needle, and described piston assembly comprises the piston rod and the piston that are wholely set, and described piston rod is arranged in described nozzle needle and is fixedly connected with nozzle needle front end.
As one of preferred implementation, described nozzle is also connected with cylinder barrel and cylinder cap, and described piston rod is arranged in described cylinder barrel and cylinder cap, and described piston rod front end is connected with nozzle needle front end by a bolt.
Specifically, the select location of described piston rod outer wall is also provided with the resilient member for keeping spring-back force.
More specifically, described resilient member comprises dish spring and disc spring pad plate.
Preferably, described piston rod outer wall is also provided with the locking ring for fastening described resilient member.
As one of preferred embodiment, described cylinder barrel is connected with nozzle by least one fastening piece.
Specifically, described fastening piece comprises flange plate.
As the preferred embodiment of one, in described piston rod, comprise at least one sensor.
The utility model, by as a whole to piston and piston rod design, has been avoided the error of two Assembly of the parts, can greatly improve the concentricity of piston and piston rod, has avoided the piston portion of nozzle may occur because of the damage of static seal the situation of internal leakage.
Accompanying drawing explanation
For further illustrating feature of the present utility model, below in conjunction with the drawings and specific embodiments, structural feature of the present utility model and technical characteristics are described in further detail.
Figure 1 shows that the structural representation of nozzle in prior art.
Figure 2 shows that the structural representation of the utility model one preferred embodiment.
Description of reference numerals: 1 '-cylinder barrel, 2 '-piston rod, 3 '-piston, 4 '-O type circle, 5 '-guide ring, 6 '-Sealing, 7 '-plug, 8 '-O type circle, 9 '-back-up ring, 10 '-cylinder bottom, 11 '-lock screw, 12 '-plug,
-cylinder barrel,
-piston rod,
-cylinder cap,
the front mounting flange of-nozzle,
-front end housing,
-bolt,
-nozzle needle,
-nozzle needle front end,
-nozzle,
-nozzle connecting ring,
-locking ring,
-dish spring,
-disc spring pad plate,
-sensor,
mounting flange after-nozzle.
Embodiment
Shown in Figure 2, nozzle of the present utility model
, comprise the nozzle body with at least one spray-hole; The nozzle needle spraying by this at least one spray-hole in order to control current
, described nozzle needle
be arranged at nozzle body front end, it is characterized in that, it also comprises ordering about nozzle needle
reciprocating piston assembly, described piston assembly comprises the piston rod being wholely set
and piston, described piston rod
be arranged at described nozzle needle
in and with nozzle needle front end
be fixedly connected with, promote nozzle needle by this
to-and-fro motion.Piston and piston rod
be wholely set, save static seal design, avoid the generation of inner side leakage, reduce assembly process.
In the present embodiment, described nozzle
also comprise connected cylinder barrel
and cylinder cap
, described piston rod
be arranged at described cylinder barrel
and cylinder cap
in, and described piston rod
front end is arranged at described nozzle needle
interior also by a bolt
with nozzle needle
front end connects.Piston rod
be arranged on nozzle
and cylinder barrel
in, at dynamic action lower piston rod
promote nozzle needle
reciprocating, thus current are sprayed from spray-hole.
In order to make piston rod
in small space, realize larger stroke, described piston rod
the select location of outer wall is also provided with the resilient member for keeping spring-back force.Preferably, described resilient member comprises dish spring
and disc spring pad plate
.For avoiding any activity of resilient member, at described piston rod
outer wall also comprises the locking ring for fastening described resilient member
.
For avoiding nozzle
with cylinder barrel
the issuable current weeping in joint, described cylinder barrel
by at least one fastening piece and nozzle
connect.Preferably, described fastening piece comprises flange plate.Described flange plate comprises the front mounting flange of nozzle
with mounting flange after nozzle
, mounting flange before nozzle
for connecting cylinder barrel
with nozzle
connection, simultaneously also have corresponding Sealing for sealed-in nozzles
with cylinder barrel
joint, with and and cylinder cap
joint; Mounting flange after nozzle
for cylinder barrel
with being connected of exterior tubular body, make cylinder barrel
form sealed environment, sealing cylinder barrel
and piston rod
rear end.
Preferably, described piston rod
inside comprise a sensor
.This is to be also control piston bar, and it is effectively worked.
In the present embodiment, piston and piston rod
concentricity design, reduced side-friction force, greatly reduce nozzle
the risk of leaking when cut-off, improves nozzle
working life and nozzle
the stationarity of current direction, thus guarantee the steady of generator generating output frequency.
Above-mentioned embodiment; be only explanation technical conceive of the present utility model and structure characteristic; object is to allow the stakeholder who is familiar with technique implement according to this; but above said content does not limit protection domain of the present utility model; any equivalence that every foundation Spirit Essence of the present utility model is done changes or modifies, within all should falling into protection domain of the present utility model.
Claims (8)
1. a nozzle, comprises
There is the nozzle body of at least one spray-hole,
The nozzle needle spraying by this at least one spray-hole in order to control current, described nozzle needle is arranged at nozzle body front end,
It is characterized in that, it also comprises ordering about the reciprocating piston assembly of nozzle needle, and described piston assembly comprises the piston rod and the piston that are wholely set, and described piston rod is arranged in described nozzle needle and is fixedly connected with nozzle needle front end.
2. nozzle according to claim 1, is characterized in that, described nozzle is also connected with cylinder barrel and cylinder cap, and described piston rod is arranged in described cylinder barrel and cylinder cap, and described piston rod front end is connected with nozzle needle front end by a bolt.
3. nozzle according to claim 2, is characterized in that, the select location of described piston rod outer wall is also provided with the resilient member for keeping spring-back force.
4. nozzle according to claim 3, is characterized in that, described resilient member comprises dish spring and disc spring pad plate.
5. nozzle according to claim 3, is characterized in that, described piston rod outer wall is also provided with the locking ring for fastening described resilient member.
6. nozzle according to claim 2, is characterized in that, described cylinder barrel is connected with nozzle by least one fastening piece.
7. nozzle according to claim 6, is characterized in that, described fastening piece comprises flange plate.
8. according to the nozzle described in above arbitrary claim, it is characterized in that, in described piston rod, comprise at least one sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320868685.2U CN203655513U (en) | 2013-12-26 | 2013-12-26 | Nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320868685.2U CN203655513U (en) | 2013-12-26 | 2013-12-26 | Nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655513U true CN203655513U (en) | 2014-06-18 |
Family
ID=50921908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320868685.2U Expired - Fee Related CN203655513U (en) | 2013-12-26 | 2013-12-26 | Nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181084A (en) * | 2017-12-11 | 2018-06-19 | 西北工业大学 | A kind of circular ring shape for sail body is adjustable injection apparatus |
| CN111425327A (en) * | 2020-04-20 | 2020-07-17 | 东方电气集团东方电机有限公司 | Built-in coaxial nozzle of motor of impulse type model water turbine |
-
2013
- 2013-12-26 CN CN201320868685.2U patent/CN203655513U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181084A (en) * | 2017-12-11 | 2018-06-19 | 西北工业大学 | A kind of circular ring shape for sail body is adjustable injection apparatus |
| CN111425327A (en) * | 2020-04-20 | 2020-07-17 | 东方电气集团东方电机有限公司 | Built-in coaxial nozzle of motor of impulse type model water turbine |
| CN111425327B (en) * | 2020-04-20 | 2022-02-08 | 东方电气集团东方电机有限公司 | Built-in coaxial nozzle of motor of impulse type model water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20161226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |