CN206919944U - A kind of energy-saving throat's pressure long-radius nozzle device - Google Patents
A kind of energy-saving throat's pressure long-radius nozzle device Download PDFInfo
- Publication number
- CN206919944U CN206919944U CN201720652956.9U CN201720652956U CN206919944U CN 206919944 U CN206919944 U CN 206919944U CN 201720652956 U CN201720652956 U CN 201720652956U CN 206919944 U CN206919944 U CN 206919944U
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- throat
- pressure
- long
- energy
- radius nozzle
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 41
- 238000010079 rubber tapping Methods 0.000 claims abstract description 22
- 238000004134 energy conservation Methods 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model provides a kind of energy-saving throat's pressure long-radius nozzle device, including upstream line and downstream line, upstream line is provided with rectifier and upstream pressure tappings, the junction of upstream line and downstream line is provided with long-radius nozzle, throat's pressure outlet is provided with long-radius nozzle, the throat of long-radius nozzle is provided with throat's pressure tappings, and throat's pressure tappings connect with throat pressure outlet；The throat outlet of long-radius nozzle is provided with energy-conservation diffuser, energy-conservation diffuser includes front support pipe and rear portion anemostat, front support pipe and rear portion anemostat are fixedly connected with the tube wall of downstream line, the throat outlet of the front end connection long-radius nozzle of front support pipe, rear end connects the front end of rear portion anemostat, and the diameter of rear portion anemostat gradually increases from the front to the back.Energy-saving throat's pressure long-radius nozzle device provided by the utility model, addition energy-conservation diffuser, reduces pressure loss in piping 30% or so, reduces energy loss, reached energy-saving effect.
Description
Technical field
It the utility model is related to a kind of flow measurement device, more particularly to a kind of energy-saving throat's pressure long-radius nozzle dress
Put.
Background technology
In the power station units such as 300MW, 600MW, in order to weigh the economic performance of Power Plant Thermal System operation, and to carry out
Thermal test is steam turbine performance certification test, and the state-of-the-art technology used at present is throat's pressure long-radius nozzle, this measurement dress
Although putting measurement accuracy height, follow-up pressure loss in piping is larger, causes substantial amounts of energy loss.
Utility model content
The technical problems to be solved in the utility model is to overcome the defects of existing, there is provided a kind of energy-saving throat's pressure major diameter
Spray nozzle device, pressure loss in piping is reduced, reduce energy loss.
In order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
A kind of energy-saving throat's pressure long-radius nozzle device, includes the upstream line and downstream line of interconnection, described
Rectifier is provided with upstream line, upstream pressure tappings are provided with the tube wall of the upstream line, the upstream line is with
The junction in play pipe road is provided with long-radius nozzle, and throat's pressure outlet, the long-radius nozzle are provided with the long-radius nozzle
Throat be provided with throat's pressure tappings, throat's pressure tappings connect with throat's pressure outlet；The long-radius nozzle
Throat outlet is provided with energy-conservation diffuser, and the energy-conservation diffuser includes front support pipe and rear portion anemostat, the anterior branch
The tube wall of stay tube and rear portion anemostat with the downstream line is fixedly connected, and the front end of the front support pipe connects the length
The throat outlet of footpath nozzle, the rear end of the front support pipe connect the front end of the rear portion anemostat, the rear portion anemostat
Diameter gradually increase from the front to the back.
Further, the caliber of the upstream line is D, and the length of the upstream line is more than 20D, the downstream line
Length be more than 10D, distance of the position of the rectifier away from the upstream line input is 2D, the upstream pressure tappings
Distance of the position away from the upstream line output end is D.
Further, the rectifier is tabular, and the thickness of the rectifier is 0.13D, is uniformly opened on the rectifier
Provided with 37 rectification holes, the aperture of the rectification hole is 0.13D.
Further, the aperture of the upstream pressure tappings is less than 0.13D, and its depth is less than 13mm.
Further, throat's internal diameter of the long-radius nozzle is d, the entrance of throat's pressure tappings away from the long-radius nozzle
The distance at end is 1.5d, and the aperture of throat's pressure tappings is 3mm-6mm, and its depth is twice of aperture.
Further, the output end of the input of the upstream line and the downstream line is respectively fixed with for connecting
Adpting flange.
A kind of energy-saving throat's pressure long-radius nozzle device of the utility model, addition energy-conservation diffuser, reduces loine pressure
Loss 30% or so, reduces energy loss, has reached energy-saving effect.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is structural representation of the present utility model.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
As shown in figure 1, a kind of energy-saving throat's pressure long-radius nozzle device, including the upstream line 1 of interconnection is with
Play pipe road 2, rectifier 3 is provided with upstream line 1, upstream pressure tappings 4, upstream line 1 are provided with the tube wall of upstream line 1
The junction of downstream line 2 is provided with long-radius nozzle 5, throat's pressure outlet 6, long-radius nozzle 5 are provided with long-radius nozzle 5
Throat be provided with throat's pressure tappings 7, throat's pressure tappings 7 connect with throat pressure outlet 6.
The throat outlet of long-radius nozzle 5 is provided with energy-conservation diffuser, and energy-conservation diffuser includes front support pipe 8 and rear portion is expanded
Separate tube 9, the tube wall of front support pipe 8 and rear portion anemostat 9 with downstream line 2 are fixedly connected, and the front end of front support pipe 8 connects
Connect long-radius nozzle 5 throat outlet, front support pipe 8 rear end connection rear portion anemostat 9 front end, rear portion anemostat 9 it is straight
Footpath gradually increases from the front to the back.The structure guides fluid to export outflow from throat, avoids the pressure loss.
The caliber of upstream line 1 is D, and the length of upstream line 1 is more than 20D, and the length of downstream line 2 is more than 10D, rectification
Distance of the position of device 3 away from the input of upstream line 1 is 2D, distance of the position of upstream pressure tappings 4 away from the output end of upstream line 1
For D.
Rectifier 3 is tabular, and the thickness of rectifier 3 is 0.13D, and 37 rectification holes, rectification are uniformly offered on rectifier 3
The aperture in hole is 0.13D.
The aperture of upstream pressure tappings 4 is less than 0.13D, and its depth is less than 13mm.
Throat's internal diameter of long-radius nozzle 5 is d, and the distance of arrival end of throat's pressure tappings away from long-radius nozzle is 1.5d, throat
The aperture of pressure tappings 7 is 3mm-6mm, and its depth is twice of aperture.
The input of upstream line 1 and the output end of downstream line 2 are respectively fixed with the adpting flange 10 for connection.
In the parameter being related to during carrying out thermal performance test, it is that some are mainly joined that carbonated drink, which flows enthalpy with flow value,
Number, the uncertain factor in experiment are finally all delivered in model by this two parameter.Enthalpy is derived parameter, and it is reflected
The uncertainty of pressure and temperature value in experiment；And the existing measurement parameter of flow value, also there is derived parameter.Being related to property for this
Can experiment in flow parameter measure and computational methods, according to the basic calculating formula of down-off：
In formula：QmMass flow under-working condition；Upstream line internal diameter under D-working condition；Opened under d-working condition
Hole or throat diameter；△ P-differential pressure；C-efflux coefficient；β-diameter ratio, β=d/D；ε-the coefficient of expansion；ρ-fluid density.
The density of fluid is obtained by measuring pressure medium and temperature parameter, it is clear that with steam phase ratio, the error of water
It is much smaller；In addition discharge coefficient can also accurately be obtained on flow verification platform.So because the flow of water is compared with main steam
Flow is easy to Accurate Determining, and typically main steam flow side is calculated using measure feedwater or condensing water flow in performance test
Method.All provide to be exported to oxygen-eliminating device to measure last low-pressure heater in the code of almost all of Turbine Performance Test
On the basis of main condensate flow on pipeline, thus other most flow parameters all calculate.
A kind of energy-saving throat's pressure long-radius nozzle device of the utility model, addition energy-conservation diffuser, reduces loine pressure
Loss 30% or so, reduces energy loss, has reached energy-saving effect.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (6)
- A kind of 1. energy-saving throat's pressure long-radius nozzle device, it is characterised in that：Upstream line and downstream including interconnection Pipeline, rectifier is provided with the upstream line, upstream pressure tappings, the upstream are provided with the tube wall of the upstream line The junction of pipeline and downstream line is provided with long-radius nozzle, and throat's pressure outlet is provided with the long-radius nozzle, described The throat of long-radius nozzle is provided with throat's pressure tappings, and throat's pressure tappings connect with throat's pressure outlet；The throat outlet of the long-radius nozzle is provided with energy-conservation diffuser, and the energy-conservation diffuser includes front support pipe and rear portion Anemostat, the tube wall of front support pipe and rear portion anemostat with the downstream line are fixedly connected, the front support The throat that the front end of pipe connects the long-radius nozzle exports, before the rear end connection rear portion anemostat of the front support pipe End, the diameter of the rear portion anemostat gradually increase from the front to the back.
- A kind of 2. energy-saving throat's pressure long-radius nozzle device according to claim 1, it is characterised in that：The upstream tube The caliber in road is D, and the length of the upstream line is more than 20D, and the length of the downstream line is more than 10D, the rectifier Distance of the position away from the upstream line input is 2D, and the position of the upstream pressure tappings is away from the upstream line output end Distance is D.
- A kind of 3. energy-saving throat's pressure long-radius nozzle device according to claim 1, it is characterised in that：The rectifier For tabular, the thickness of the rectifier is 0.13D, and 37 rectification holes are uniformly offered on the rectifier, the rectification hole Aperture is 0.13D.
- A kind of 4. energy-saving throat's pressure long-radius nozzle device according to claim 1, it is characterised in that：The upstream takes The aperture of pressure mouth is less than 0.13D, and its depth is less than 13mm.
- A kind of 5. energy-saving throat's pressure long-radius nozzle device according to claim 1, it is characterised in that：The major diameter spray Throat's internal diameter of mouth is d, and the distance of the arrival end of throat's pressure tappings away from the long-radius nozzle is 1.5d, throat's pressure The aperture of mouth is 3mm-6mm, and its depth is twice of aperture.
- A kind of 6. energy-saving throat's pressure long-radius nozzle device according to claim 1, it is characterised in that：The upstream tube The output end of the input in road and the downstream line is respectively fixed with the adpting flange for connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720652956.9U CN206919944U (en) | 2017-06-06 | 2017-06-06 | A kind of energy-saving throat's pressure long-radius nozzle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720652956.9U CN206919944U (en) | 2017-06-06 | 2017-06-06 | A kind of energy-saving throat's pressure long-radius nozzle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206919944U true CN206919944U (en) | 2018-01-23 |
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ID=61314263
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720652956.9U Expired - Fee Related CN206919944U (en) | 2017-06-06 | 2017-06-06 | A kind of energy-saving throat's pressure long-radius nozzle device |
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| Country | Link |
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| CN (1) | CN206919944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060049A (en) * | 2018-09-20 | 2018-12-21 | 开封仪表有限公司 | Throat's pressure nozzle and the device for using the nozzle |
-
2017
- 2017-06-06 CN CN201720652956.9U patent/CN206919944U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060049A (en) * | 2018-09-20 | 2018-12-21 | 开封仪表有限公司 | Throat's pressure nozzle and the device for using the nozzle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 |