CN213021739U - Special flow nozzle for boiler - Google Patents
Special flow nozzle for boiler Download PDFInfo
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- CN213021739U CN213021739U CN202021996159.0U CN202021996159U CN213021739U CN 213021739 U CN213021739 U CN 213021739U CN 202021996159 U CN202021996159 U CN 202021996159U CN 213021739 U CN213021739 U CN 213021739U
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- 239000012530 fluid Substances 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 238000010146 3D printing Methods 0.000 claims abstract 2
- 230000007704 transition Effects 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model discloses a special flow nozzle of boiler, flow nozzle includes that the fluid is responsible for, the fluid is responsible for and is equipped with the nozzle, nozzle one end outer wall is even as an organic whole with the fluid is responsible for, nozzle one end inner wall is the horn mouth section, nozzle one other end constitutes and is responsible for endocentric interior straight tube section with the fluid, be equipped with the toper changeover portion between the inner wall that interior straight tube section and fluid are responsible for, the fluid is responsible for and is equipped with respectively at the both ends of nozzle and is responsible for the radial measurement pipeline section of becoming the body structure with the fluid, flow nozzle is through spraying metal powder in the mould successive layer, the successive layer passes through laser irradiation and makes flow nozzle's overall structure. The 3D printing forming adopted by the flow nozzle has the characteristics of simple and convenient processing and manufacturing, high efficiency of a technician, high structural strength, high temperature and high pressure resistance, high processing precision and the like. The design pressure is higher and higher, the design temperature is also greatly improved, and new requirements are provided for the flow nozzle.
Description
Technical Field
The utility model relates to a technical field, concretely relates to special flow nozzle of boiler is measured in the throttle.
Background
Throttling flow measuring devices are one of the most widely used and long-standing flow measuring devices. The device has the characteristics of simple structure, reliable operation, strong universality and the like, and is widely applied to industries such as petroleum, chemical industry, electric power, metallurgy and the like. The principle of the method is that when fluid passes through a throttling device, a flow beam contracts, the flow speed is increased, the static pressure is reduced, pressure difference is generated before and after a throttling element, and the fluid flow is calculated by utilizing the numerical relation between the differential pressure value and the flow. The flow nozzle is an important one of throttling type flow measuring devices. The throat pressure-taking long-neck nozzle effectively avoids the disturbance influence of a fluid boundary layer due to the fact that the throat pressure-taking long-neck nozzle directly opens a hole to take pressure at the high-flow-speed nozzle throat, and becomes a precise flow measuring device in a high-temperature, high-pressure and high-Reynolds-number fluid environment. The ASME flow nozzle which is widely popularized in ASME standards issued by the American society of mechanical Engineers is a throat pressure-taking long-neck nozzle.
The nozzle part of the throat pressure-taking long-neck nozzle generally uses stainless steel materials, the pipeline part generally uses low alloy steel materials for maintaining the reliability of welding installation, the physical and chemical property difference of the two materials is large, and in addition, the pipe wall is thick, so that great difficulty is brought to welding. At present, in order to solve the problem, main research focuses on innovations of welding materials and welding processes, but the reliability of dissimilar steel welding in a high-temperature and high-pressure fluid measurement environment is difficult to guarantee, and a welding structure of dissimilar steel used in a pressure pipeline does not meet safety specifications.
Chinese patent 201921412454.4 discloses a throat pressure-tapping long-neck nozzle throttling flow measuring device, which comprises a nozzle, wherein the nozzle is arranged inside a pipeline, the nozzle is connected with the pipeline in a limiting manner, and a pressure tapping pipe made of the same material as the pipeline is welded with the pipeline and enters the nozzle. Compared with the prior art, avoid throat to get the inside xenogenesis steel welded structure of pressure long neck nozzle completely, rely on the physical connection mode between the part, the reliability is high, and it is big to connect area of contact, and the part wearing and tearing probability of droing is little. However, the throat pressure-taking long-neck nozzle is provided with a section of annular necking on the inner wall of the outer pipe at the matching part of the throat pressure-taking long-neck nozzle and the outer pipe, and the structure is difficult to precisely machine the annular necking section in the pipeline for the longer outer pipe. The existing venturi measuring tube is mostly processed by using bar materials, the processing and manufacturing method wastes time and labor and wastes materials, the existing throttling nozzle is formed by welding and splicing a plurality of parts, and the splicing structure is easy to damage and leak at the connecting part, so that the venturi measuring tube is necessary to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a special flow nozzle of boiler that processing simple manufacture, convenient, skilled worker is efficient, structural strength is high, high temperature and high pressure resistant, a machining precision is high.
In order to achieve the above object, the technical solution of the present invention is to provide a flow nozzle dedicated for boiler, which comprises a main fluid pipe, a nozzle disposed in the main fluid pipe, a nozzle outer wall disposed at the other end of the nozzle and connected to the main fluid pipe, a nozzle inner wall disposed at one end of the nozzle being a bell-mouth section, an inner straight pipe section disposed at one end of the nozzle and concentric with the main fluid pipe, a tapered transition section disposed between the inner straight pipe section and the inner wall of the main fluid pipe, and a radial measuring pipe section disposed at the two ends of the nozzle and connected to the main fluid pipe.
In order to strengthen the strength of the transition section between the fluid main pipe and the radial measuring pipe and avoid damage caused by stress concentration, the preferable technical scheme is that a strengthening transition ring is arranged at the joint part of the outer wall of the fluid main pipe and the outer wall of the radial measuring pipe.
In order to enhance the strength of the transition section between the main fluid pipe and the nozzle and avoid damage caused by stress concentration, it is preferable that an arc-shaped transition section is provided at a joint portion between the nozzle and the main fluid pipe.
In order to enable the flow nozzle to form an integral structure without a connecting piece, enable the flow nozzle to be rapidly molded and enable the molded flow nozzle to meet various use requirements, a further preferred technical scheme is that the flow nozzle is manufactured into the integral structure of the flow nozzle by spraying metal powder layer by layer in a mold and melting the metal powder layer by layer through laser irradiation.
In order to make the inner surface of the nozzle after molding smoother and reduce the flow resistance of the fluid, it is further preferable that plastic layers are adhered to the inner surface of the fluid main pipe and the inner and outer surfaces of the nozzle by injection molding or vulcanization.
In order to facilitate the connection of the nozzle to a fluid conveying pipeline, a further preferred technical scheme is that two ends of the fluid main pipe are respectively provided with a connecting flange.
In order to prevent the external environment from corroding the outer surface of the nozzle, a more preferable technical scheme is that an anticorrosive heat-resistant coating is adhered to the outer surface of the fluid main pipe.
In order to facilitate the connection of the measuring tube to the measuring device, it is further preferred if a threaded connection is provided at the end of the radial measuring tube.
The utility model has the advantages of with beneficial effect, this flow nozzle adopts 3D to print the shaping and has characteristics such as processing simple manufacture, convenient, skilled worker is efficient, structural strength is high, high temperature and high pressure resistant, machining precision height. The design pressure is higher and higher, the design temperature is also greatly improved, and new requirements are provided for the flow nozzle. The traditional flow nozzle can not meet the requirements of the existing design, and the flow nozzle with higher safety and reliability is required.
Drawings
FIG. 1 is a schematic structural view of a main sectional view of a flow nozzle for a boiler according to the present invention;
fig. 2 is a schematic diagram of the side view mechanism of fig. 1.
FIG. 1, fluid main; 2. a nozzle; 3. a flare section; 4. an inner straight tube section; 5. a tapered transition section; 6. a radial measurement tube; 7. a reinforcement transition ring; 8. an arc-shaped transition section.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and 2, the utility model relates to a special flow nozzle of boiler, adopt 3D to print shaping flow nozzle and include that the fluid is responsible for 1, be equipped with nozzle 2 in the fluid is responsible for 1, 2 one end outer walls of nozzle are responsible for 1 with the fluid and are linked as an organic whole, 2 one end inner walls of nozzle are horn mouth section 3, 2 one another ends of nozzle constitute and are responsible for 1 endocentric interior straight tube section 4 with the fluid, be equipped with toper changeover portion 5 between interior straight tube section 4 and the inner wall that the fluid is responsible for 1, the fluid is responsible for 1 and is equipped with respectively at the both ends of nozzle 2 and is responsible for the radial survey buret 6 that becomes.
In order to strengthen the intensity of the transition section between the fluid main pipe 1 and the radial measuring pipe 6, avoid causing the damage that causes because of stress concentration, the utility model discloses preferred embodiment is the fluid main pipe 1's outer wall is equipped with the radial measuring pipe 6 outer wall junction and strengthens excessive ring 7.
In order to strengthen the intensity of the transition section between the main fluid pipe 1 and the nozzle 2 and avoid the damage caused by stress concentration, the utility model discloses preferred embodiment still, the joint position between the main fluid pipe 1 and the nozzle 2 is equipped with the arc transition section 8.
In order to make flow nozzle 2 form the overall structure who does not have the connecting piece to can make its rapid prototyping, and can satisfy each item operation requirement after making its shaping, the utility model discloses further preferred embodiment is, flow nozzle 2 is through in the mould successive layer sprinkle metal powder, the successive layer through laser irradiation make flow nozzle 2's overall structure with the metal powder melting.
In order to make the inner surface of the nozzle 2 smoother after molding and reduce the flow resistance of the fluid, a further preferred embodiment of the present invention is that a plastic layer (not shown) is attached to the inner surface of the fluid main pipe 1 and the inner and outer surfaces of the nozzle 2 by injection molding or vulcanization.
In order to facilitate the connection of the nozzle 2 to the fluid conveying pipeline, a further preferred embodiment of the present invention further includes that connecting flanges (not shown) are respectively provided at both ends of the fluid main pipe 1.
In order to prevent the corrosion of the outer surface of the nozzle 2 caused by the external environment, a further preferred embodiment of the present invention is that an anti-corrosive and heat-resistant coating (not shown) is attached to the outer surface of the fluid main pipe 1.
In order to facilitate the connection of the radial measuring tube 6 with the measuring instrument, a further preferred embodiment of the invention also provides that the end of the radial measuring tube 6 is provided with a threaded connection section.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A flow nozzle special for a boiler is characterized in that the flow nozzle is formed by 3D printing and comprises a fluid main pipe, a nozzle is arranged in the fluid main pipe, the outer wall of one end of the nozzle is connected with the fluid main pipe into a whole, the inner wall of one end of the nozzle is a bell-mouth section, the other end of the nozzle is an inner straight pipe section concentric with the fluid main pipe, a conical transition section is arranged between the inner straight pipe section and the inner wall of the fluid main pipe, and two ends of the fluid main pipe of the nozzle are respectively provided with a radial measuring pipe section which is integrated with the fluid main pipe into.
2. The boiler-specific flow nozzle of claim 1, wherein a reinforcing transition ring is provided at the junction of the outer wall of the main fluid pipe and the outer wall of the radial measurement pipe.
3. The boiler specific flow nozzle of claim 2, wherein an arcuate transition section is provided at the junction between the nozzle and the main fluid conduit.
4. The flow nozzle as claimed in claim 3, wherein the flow nozzle is constructed as a whole by spraying metal powder layer by layer in a mold, melting the metal powder layer by laser irradiation.
5. The flow nozzle as claimed in claim 4, wherein a plastic layer is adhered to the inner surface of the main fluid pipe and the inner and outer surfaces of the nozzle by injection molding or vulcanization.
6. The flow nozzle as claimed in claim 5, wherein a connection flange is provided at each end of the main fluid pipe.
7. The boiler specific flow nozzle of claim 6, wherein an anti-corrosive and heat resistant coating is attached to the outer surface of the fluid main.
8. The boiler-specific flow nozzle of claim 7, wherein a threaded connection section is provided at the end of the radial measurement tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021996159.0U CN213021739U (en) | 2020-09-14 | 2020-09-14 | Special flow nozzle for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021996159.0U CN213021739U (en) | 2020-09-14 | 2020-09-14 | Special flow nozzle for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213021739U true CN213021739U (en) | 2021-04-20 |
Family
ID=75477126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021996159.0U Active CN213021739U (en) | 2020-09-14 | 2020-09-14 | Special flow nozzle for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213021739U (en) |
-
2020
- 2020-09-14 CN CN202021996159.0U patent/CN213021739U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231101 Address after: 214400 No.98, Qiaoqi Renmin Road, XuXiake Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: Jiangsu Weiersheng Electronic Technology Co.,Ltd. Address before: 214400 No.12 Fuyuan Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: Jiangyin Weisheng Instrument Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right |