CN110274216A - A kind of once through steam generator restricting element - Google Patents
A kind of once through steam generator restricting element Download PDFInfo
- Publication number
- CN110274216A CN110274216A CN201910620678.2A CN201910620678A CN110274216A CN 110274216 A CN110274216 A CN 110274216A CN 201910620678 A CN201910620678 A CN 201910620678A CN 110274216 A CN110274216 A CN 110274216A
- Authority
- CN
- China
- Prior art keywords
- once
- steam generator
- restricting element
- main body
- impeller
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/34—Adaptations of boilers for promoting water circulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
It is an object of the invention to disclose a kind of once through steam generator restricting element, it includes cylinder-shaped body, entrance channel is provided centrally in the main body, discharge orifice is symmetrically arranged in the two sides of the entrance channel bottom, it is provided with multi-stage impeller on the outside of the lower body part, sealing screw thread is provided on the outside of the body top；Compared with prior art, the end for being easily installed on heat-transfer pipe by sealing screw thread, the quantity and notch size of impeller are selected according to required resistance coefficient, it can be realized biggish resistance coefficient, there is no narrow runner gaps, the possibility that longtime running blocks is reduced, there is good versatility and scalability, achieve the object of the present invention.
Description
Technical field
The present invention relates to a kind of restricting element structure, in particular to a kind of once through steam generator restricting element.
Background technique
The operation of shell-and-tube once through steam generator is primarily upon two aspects: first is that the stability of total system operation, two
It is the integrality of component.The former is primarily upon the design of feed water control system and steam pressure control system, to provide stabilization
Feedwater flow, prevent steam pressure to fluctuate, to the steam of steam turbine stable supplying high quality；The latter mainly sends out with steam
The structure of raw device designs correlation, such as the structure design and the design of heat-transfer pipe import orifice plate and throttling element of feed water module, uses
To prevent that flowing instability occurs in pipe.
For the once through steam generator of relatively high power, since heat-transfer pipe is longer, pipe side liquid is larger along journey friction pressure drop,
The throttling element of some traditional structures such as orifice-plate type throttling element cannot provide enough resistance coefficients to meet and inhibit flowing not
The requirement of stability.
It is accordingly required in particular to which a kind of once through steam generator restricting element, above-mentioned existing to solve the problems, such as.
Summary of the invention
The purpose of the present invention is to provide a kind of once through steam generator restricting elements, in view of the deficiencies of the prior art,
Effectively inhibit to manage interior flow instability, guarantees the safe and stable operation of once through steam generator.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of once through steam generator restricting element, which is characterized in that it includes cylinder-shaped body, in the main body
Be provided centrally with entrance channel, be symmetrically arranged with discharge orifice in the two sides of the entrance channel bottom, the lower body part it is outer
Side is provided with multi-stage impeller, and sealing screw thread is provided on the outside of the body top.
In one embodiment of the invention, the main body is mounted on the inlet end portion of heat-transfer pipe, and the main body passes through close
Envelope screw thread is connected with the inner wall of heat-transfer pipe.
In one embodiment of the invention, hexagonal prisms are provided at the top of the main body, in order to tighten.
In one embodiment of the invention, the diameter of the impeller is slightly less than the internal diameter of heat-transfer pipe.
In one embodiment of the invention, it is arranged on the impeller jagged.
Once through steam generator restricting element of the invention is easily pacified by sealing screw thread compared with prior art
End loaded on heat-transfer pipe selects the quantity and notch size of impeller according to required resistance coefficient, can be realized biggish
Resistance coefficient, there is no narrow runner gaps, reduce the possibility that longtime running blocks, and have good versatility and expansion
Malleability achieves the object of the present invention.
The features of the present invention sees the detailed description of the drawings of the present case and following preferable embodiment and obtains clearly
Solution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of once through steam generator restricting element of the invention；
Fig. 2 is the structural schematic diagram of the A-A section of Fig. 1；
Fig. 3 is the structural schematic diagram of body top of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment
As shown in Figure 1 to Figure 3, once through steam generator restricting element of the invention, it includes cylinder-shaped body 10,
Main body 10 is provided centrally with entrance channel 11, is symmetrically arranged with discharge orifice 12, main body 10 in the two sides of 11 bottom of entrance channel
It is provided with multi-stage impeller 13 on the outside of lower part, sealing screw thread 14 is provided on the outside of 10 top of main body.
In the present embodiment, main body 10 is mounted on the inlet end portion of heat-transfer pipe, and main body 10 passes through sealing screw thread 14 and heat transfer
The inner wall of pipe is connected.
In the present embodiment, the top of main body 10 is provided with hexagonal prisms 15, in order to tighten.
In the present embodiment, according to the impeller 13 of different resistance coefficient demand setting different numbers, the diameter of impeller 13
It is slightly less than the internal diameter of heat-transfer pipe.
In the present embodiment, it is arranged on impeller 13 jagged.
Once through steam generator restricting element of the invention, pipe side liquid initially enters access road 11, then through flowing
Water hole 12 is flowed out, then along the round-trip baffling of impeller 13 at different levels；The end for being easily installed on heat-transfer pipe by sealing screw thread 14, according to
The quantity and notch size of required resistance coefficient selection impeller 13, can be realized biggish resistance coefficient, there is no narrow
Runner gap, the possibility that blocks of longtime running is reduced, with good versatility and scalability.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of once through steam generator restricting element, which is characterized in that it includes cylinder-shaped body, in the main body
The heart is provided with entrance channel, is symmetrically arranged with discharge orifice, the outside of the lower body part in the two sides of the entrance channel bottom
It is provided with multi-stage impeller, sealing screw thread is provided on the outside of the body top.
2. once through steam generator restricting element as described in claim 1, which is characterized in that the main body is mounted on heat transfer
The inlet end portion of pipe, the main body are connected by sealing screw thread with the inner wall of heat-transfer pipe.
3. once through steam generator restricting element as described in claim 1, which is characterized in that the top of the main body is arranged
There are hexagonal prisms.
4. once through steam generator restricting element as described in claim 1, which is characterized in that the diameter of the impeller is smaller
In the internal diameter of heat-transfer pipe.
5. once through steam generator restricting element as described in claim 1, which is characterized in that be provided on the impeller scarce
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620678.2A CN110274216A (en) | 2019-07-10 | 2019-07-10 | A kind of once through steam generator restricting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620678.2A CN110274216A (en) | 2019-07-10 | 2019-07-10 | A kind of once through steam generator restricting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110274216A true CN110274216A (en) | 2019-09-24 |
Family
ID=67963055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910620678.2A Withdrawn CN110274216A (en) | 2019-07-10 | 2019-07-10 | A kind of once through steam generator restricting element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274216A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575839A (en) * | 2009-03-09 | 2012-07-11 | 西门子公司 | Continuous evaporator |
| CN103851604A (en) * | 2014-02-28 | 2014-06-11 | 清华大学 | Throttling component used for once-through steam generator |
| CN104266165A (en) * | 2014-09-17 | 2015-01-07 | 中科华核电技术研究院有限公司 | Once-through steam generator parallel pipe group throttling element |
| CN210624496U (en) * | 2019-07-10 | 2020-05-26 | 上海核工程研究设计院有限公司 | Throttling element for direct current steam generator |
-
2019
- 2019-07-10 CN CN201910620678.2A patent/CN110274216A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575839A (en) * | 2009-03-09 | 2012-07-11 | 西门子公司 | Continuous evaporator |
| CN103851604A (en) * | 2014-02-28 | 2014-06-11 | 清华大学 | Throttling component used for once-through steam generator |
| CN104266165A (en) * | 2014-09-17 | 2015-01-07 | 中科华核电技术研究院有限公司 | Once-through steam generator parallel pipe group throttling element |
| CN210624496U (en) * | 2019-07-10 | 2020-05-26 | 上海核工程研究设计院有限公司 | Throttling element for direct current steam generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101839590B (en) | Micro-passage heat exchanger | |
| EP2236973A2 (en) | Refrigerant distributer for heat exchanger and heat exchanger | |
| EP2995886A1 (en) | Heat exchanger and refrigeration cycle device | |
| CN104595247A (en) | Centrifugal compressor with recooling structure | |
| CN101738016A (en) | High-efficiency condenser and air conditioner with same | |
| US10591191B2 (en) | Refrigerant riser for evaporator | |
| CN104595246A (en) | Centrifugal compressor with recooling structure | |
| CN202901681U (en) | Flow limiting device | |
| CN110274216A (en) | A kind of once through steam generator restricting element | |
| CN201844716U (en) | High-efficiency compact condensing heat exchanger | |
| CN102166449B (en) | Water treatment device with constant resistance regulation and control function and water treatment method thereof | |
| CN102123577B (en) | Arrangement in a liquid cooler | |
| CN203132140U (en) | Heat exchanger | |
| EP3647682B1 (en) | Heat exchanger and refrigeration cycle device | |
| CN102072684A (en) | Refrigerant distributing device and heat exchanger with same | |
| CN204202252U (en) | The tubular evaparator of two ends shunting bleed | |
| CN210624496U (en) | Throttling element for direct current steam generator | |
| CN201748713U (en) | High-efficiency compact heat exchanger | |
| CN204202250U (en) | The tubular evaparator of band shunting bleed | |
| CN204329683U (en) | A kind of pipe heat exchanger | |
| CN210664082U (en) | Cooler and air compressor unit with same | |
| CN204088295U (en) | There is structure and the cooling system of high-power semiconductor module and cooling device | |
| CN102297547A (en) | Heat exchanger | |
| CN106949672B (en) | Coil type double-dryness split-flow heat exchange evaporator | |
| CN201844719U (en) | Compact condensing heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
|
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190924 |