CN213655336U - High-concentration ash slurry conveying pipeline inner wall water film generation resistance reduction device - Google Patents
High-concentration ash slurry conveying pipeline inner wall water film generation resistance reduction device Download PDFInfo
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- CN213655336U CN213655336U CN202022045192.1U CN202022045192U CN213655336U CN 213655336 U CN213655336 U CN 213655336U CN 202022045192 U CN202022045192 U CN 202022045192U CN 213655336 U CN213655336 U CN 213655336U
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Abstract
The utility model relates to a high concentration ash sediment thick liquid pipeline inner wall water film takes place to fall and hinders device, its characterized in that: the water film generation resistance reducing device comprises a left main body, a right main body, a connecting pipe and a connecting flange, wherein a left connecting pipe and a right connecting pipe are respectively and correspondingly arranged at the central parts of two halves of the left main body and the right main body and are respectively and fixedly connected with the ash slurry conveying pipeline through the connecting flange, arc-shaped grooves are respectively arranged at the central parts of the left main body and the right main body close to the left connecting pipe and the right connecting pipe, an annular volute cavity is formed after the two halves of the left main body and the right main body are folded, a process water inlet communicated with a process water input pipeline is formed, a volute water flowing channel forming an included angle with the axial lead of the connecting pipe is formed after the left main body and the right main body are folded, injected process water flows out from an opening at the bottom of the volute cavity and enters the ash slurry conveying pipeline through the volute water flowing channel.
Description
Technical Field
The utility model relates to a supporting device is carried to the material, especially discloses a high concentration ash slurry pipeline inner wall water film takes place to fall and hinders device, is applied to coal fired power plant's high concentration ash slurry long distance conveying system.
Background
Along with the deep promotion of the Chinese advocated 'one-by-one-way', the construction requirements of foreign high-concentration ash conveying systems of thermal power plants are more and more. Although high-concentration delivery systems are rarely adopted in China, the scale and the number of installed power plants are rapidly increased along with the development of Indian economy in foreign countries such as India, and it is increasingly difficult to design large ash yards in the areas near the power plants, and most of the ash yards are arranged at a distance of 4-20 kilometers away from the power plants. Therefore, the ash-removing system can not realize long-distance conveying by using the traditional ash slurry pump and the ash slurry pump, and the ash slurry can be conveyed in a long distance without adding a multi-stage relay pump room, so that the investment and the operation cost are correspondingly increased, and the ash slurry conveying with high concentration, long distance and high lift is a necessary trend.
Throughout the high-concentration HCSD slurry conveying system in the India power industry, the conveying distance of some projects is up to 8000 m, the conveying resistance of the conveying pipeline is very large, and in the high-concentration slurry system, the conveying resistance of the pipeline is larger. The greater the danger of pipe blockage, the greater the energy consumption of transportation. The biggest operation danger is that when the concentration is too high or a high-concentration pump breaks down in the operation process, the conveying pipe is blocked, and the ash and slag slurry system cannot operate.
Disclosure of Invention
The utility model aims at solving prior art's defect, design a high concentration ash sediment thick liquid pipeline inner wall water film and take place to fall and hinder the device, through forming the water film at the pipeline inner wall, realize reducing the frictional resistance of high concentration ash sediment thick liquid and pipeline inner wall, improve high concentration ash sediment thick liquid conveying efficiency, reduce the stifled dead condition of pipeline high concentration ash sediment thick liquid and take place.
The utility model discloses a realize like this: the utility model provides a high concentration ash slurry pipeline inner wall water film takes place to fall and hinders device, fixes to set up on ash slurry pipeline, its characterized in that: the water film generation resistance reducing device comprises a left main body, a right main body, a connecting pipe and a connecting flange, wherein a left connecting pipe and a right connecting pipe are respectively and correspondingly arranged at the central parts of two half parts of the left main body and the right main body of the water film generation resistance reducing device, the left connecting pipe and the right connecting pipe are respectively and fixedly connected with an ash slurry conveying pipeline through the connecting flanges arranged at the respective ends of the left connecting pipe and the right connecting pipe, the central part of the left main body, which is close to the left connecting pipe, is provided with an arc-shaped groove which is smoothly connected with the left main body, the corresponding part of the right main body is provided with an arc-shaped groove which is smoothly connected with the right main body, the two half parts are folded to form an annular volute cavity, a process water inlet communicated with a process water input pipeline is arranged on the side wall of the volute cavity, the pipe wall of the port part at the folding joint of the left main, and after the process water is folded, a volute water flowing channel forming an included angle with the axial lead of the connecting pipe is formed, the process water injected from the process water inlet flows out from an opening at the bottom of the volute cavity and then sequentially enters the ash slurry conveying pipeline through the volute water flowing channel and the connecting pipe, and meanwhile, the advancing direction of the injected process water is consistent with the ash slurry conveying direction in the ash slurry conveying pipeline.
The included angle between the left connecting pipe and the axial lead of the connecting pipe is less than or equal to 15 degrees when the pipe wall of the port part of the folding connection part of the left main body and the right main body is folded towards the center, and the volute water flowing channel is a slit pipeline with the width less than 1mm and is intersected with the annular volute cavity in a tangent line mode.
In order to realize the effect of integrally reducing the pipeline resistance, 1-99 water film generation resistance reducing devices are arranged on the ash slurry conveying pipeline, and one water film generation resistance reducing device is arranged at the interval of every 100-1000 meters.
The left main body and the right main body of the water film generation resistance reduction device are fixedly connected through bolt connecting holes formed in the outer side edges of the left main body and the right main body of the water film generation resistance reduction device, sealing ring grooves used for embedding sealing rings are formed in the corresponding positions of the left main body and the right main body of the water film generation resistance reduction device on the outer side of the volute cavity respectively, and the sealing performance of the water film generation resistance reduction device after the left half part and the right half part are folded is guaranteed by arranging the sealing rings in the sealing ring grooves.
The utility model has the advantages that: the utility model discloses can effectively reduce the running resistance of high concentration ash sediment thick liquid when normally throwing the transportation, if emergency starting under the accident condition the utility model discloses, can reduce by a wide margin the stifled dead condition of high concentration ash sediment thick liquid in the pipeline and take place. The utility model discloses a water pressure and the little negative pressure that the ash sediment thick liquid flows and produces form the thin water film of one deck between ash sediment thick liquid and pipe wall, the thick liquid advances the in-process, the relative friction of thick liquid with the pipe wall is transferred to the relative friction of water film and pipe wall, because the viscosity coefficient of water is about the hundredth of thick liquid, so the transport resistance of operation in-process can greatly reduced, be applied to coal fired power plant high concentration ash sediment thick liquid long distance transport, effectively reduce pipeline's on-way resistance. The utility model discloses can fill the blank in the aspect of the high concentration ash sediment thick liquid pipeline falls to hinder the technique in domestic and external, improve the advance and the stability of the high concentration slurrying system in our city, improve the market competition of company in this field by a wide margin.
Drawings
FIG. 1 is a schematic view of the installation and connection relationship between the ash slurry conveying pipeline and the ash slurry conveying pipeline.
Fig. 2 is a schematic view of the main structure of the main body of the present invention.
In the figure: 1. a slurry conveying pipe; 2. A water film generation resistance reduction device; 3. A connecting flange; 21. A left main body; 22. A right main body; 23. A left connecting pipe; 24. A right connecting pipe; 25. Connecting holes of bolts; 26. A volute cavity; 27. A process water inlet; 28. A volute water flowing channel; 29. And (5) sealing rings.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
According to attached drawing 1 and attached drawing 2, the utility model relates to a high concentration ash slurry pipeline inner wall water film takes place to fall and hinders device, fixes setting up on ash slurry pipeline 1. The water film generation and resistance reduction device 2 comprises a left main body 21, a right main body 22, connecting pipes and connecting flanges 3, wherein a left connecting pipe 23 and a right connecting pipe 24 are correspondingly arranged at the central parts of the two halves of the left main body 21 and the right main body 22 of the water film generation and resistance reduction device 2 respectively, and the left connecting pipe 23 and the right connecting pipe 24 are fixedly connected with the ash slurry conveying pipeline 1 through the connecting flanges 3 arranged at the respective ends. The central part of the left main body 21 close to the left connecting pipe is provided with an arc-shaped groove, the corresponding position of the right main body 22 is provided with an arc-shaped groove which is smoothly connected with the left main body, the two halves are folded, the outer part of the connecting pipe is an annular volute cavity 26, and the side wall of the volute cavity 26 is provided with a process water inlet 27 communicated with a process water input pipeline. The pipe wall of the port part of the folding connection part of the left main body 21 and the right main body 22 of the left connecting pipe 23 is in a cone shape folded towards the center, the right connecting pipe 24 is matched with the left connecting pipe, the pipe wall of the port part of the left connecting pipe 23 and the right connecting pipe 24 are matched with each other, a volute water flowing channel 28 forming an included angle with the axial lead of the connecting pipes is formed after the left connecting pipe is folded, process water injected from a process water inlet 27 flows out from an opening at the bottom of a volute cavity 26 and then sequentially flows through the volute water flowing channel 28 and the connecting pipes to enter the ash slurry conveying pipeline 1, and meanwhile, the advancing direction of the injected process water is consistent with the ash slurry conveying direction in the ash.
When the pipe wall of the port of the folding joint of the left main body 21 and the right main body 22 is folded towards the center, the included angle between the pipe wall and the axial lead of the connecting pipe (namely, the included angle alpha between the inclined plane at the port of the left connecting pipe 23 in the cross-sectional view shown in fig. 2 and the horizontal plane) of the left connecting pipe 23 is less than or equal to 15 degrees, and the volute water flowing channel 28 is a slit pipeline with the width less than 1mm and is intersected with the annular volute cavity 26 in a tangent line manner.
In order to realize the effect of integrally reducing the resistance of the pipeline, 1-99 water film generation resistance reducing devices 2 are arranged on the ash slurry conveying pipeline.
The left main body 21 and the right main body 22 of the water film generation resistance reduction device 2 are fixedly connected through bolt connecting holes 25 arranged on the outer sides of the left main body 21 and the right main body 22 of the water film generation resistance reduction device 2 through bolts, sealing ring grooves used for embedding sealing rings 29 are respectively arranged at corresponding positions on the left main body 21 and the right main body 22 of the water film generation resistance reduction device on the outer side of the volute cavity 26, and the sealing performance of the closed left half part and the closed right half part of the water film generation resistance reduction device 2 is guaranteed through the arrangement of the sealing rings 29.
The utility model is suitable for the transportation of high concentration ash slurry of power plant, the main components of the pulverized coal ash of the power plant are silicate and silicon dioxide, the pulverized coal ash slurry has strong hydrophobicity, the ash slurry can be uniformly mixed only after being stirred for about 3 minutes by a strong stirrer, the conveying flow speed of the device in the ash slurry conveying pipeline is about 2-3 m/s, the device basically moves in a stratosphere in the ash slurry conveying pipeline, the water film generation resistance reducing device of the utility model forms a thin water film between the ash slurry and the pipe wall, although the water film will eventually mix with the ash slurry, this is a slow process, requiring about 2-5 minutes, when the ash slurry has been transported over a distance of about 300-1000 meters, so realize falling through the multiple spot setting and hinder the function, can set up one at every 100 sand slag thick liquid pipeline about 1000 meters the utility model discloses the water film takes place to fall and hinders the device.
Claims (4)
1. The utility model provides a high concentration ash slurry pipeline inner wall water film takes place to fall and hinders device, fixes to set up on ash slurry pipeline, its characterized in that: the water film generation resistance reducing device comprises a left main body, a right main body, a connecting pipe and a connecting flange, wherein a left connecting pipe and a right connecting pipe are respectively and correspondingly arranged at the central parts of two half parts of the left main body and the right main body of the water film generation resistance reducing device, the left connecting pipe and the right connecting pipe are respectively and fixedly connected with an ash slurry conveying pipeline through the connecting flanges arranged at the respective ends of the left connecting pipe and the right connecting pipe, an arc-shaped groove which is smoothly connected with the left connecting pipe is formed in the central part of the left main body, the corresponding position of the right main body is provided with the arc-shaped groove, the two half parts are folded to form an annular volute cavity, a process water inlet communicated with a process water input pipeline is formed in the side wall of the volute cavity, the pipe wall of the port part of the folded connecting part of the left main body and the right main body is in a cone shape folded towards the center, the right connecting, and after the process water is folded, a volute traveling water flow channel forming an included angle with the axial lead of the connecting pipe is formed, the process water injected from the process water inlet flows out from an opening at the bottom of the volute cavity and then enters the ash slurry conveying pipeline through the volute traveling water flow channel, and the advancing direction of the injected process water is consistent with the ash slurry conveying direction in the ash slurry conveying pipeline.
2. The high-concentration ash slurry conveying pipeline inner wall water film generation resistance reducing device according to claim 1, which is characterized in that: the included angle between the left connecting pipe and the axial lead of the connecting pipe is less than or equal to 15 degrees when the pipe wall of the port part of the folding connection part of the left main body and the right main body is folded towards the center, and the volute water flowing channel is a slit pipeline with the width less than 1mm and is intersected with the annular volute cavity in a tangent line mode.
3. The high-concentration ash slurry conveying pipeline inner wall water film generation resistance reducing device according to claim 1, which is characterized in that: in order to realize the effect of integrally reducing the pipeline resistance, 1-99 water film generation resistance reducing devices are arranged on the ash slurry conveying pipeline, and one water film generation resistance reducing device is arranged at the interval of every 100-1000 meters.
4. The high-concentration ash slurry conveying pipeline inner wall water film generation resistance reducing device according to claim 1, which is characterized in that: the left main body and the right main body of the water film generation resistance reduction device are fixedly connected through bolt connecting holes formed in the outer side edges of the left main body and the right main body of the water film generation resistance reduction device through bolts, sealing ring grooves are formed in the corresponding positions of the left main body and the right main body of the water film generation resistance reduction device on the outer side of the volute cavity, and sealing rings are arranged in the sealing ring grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045192.1U CN213655336U (en) | 2020-09-17 | 2020-09-17 | High-concentration ash slurry conveying pipeline inner wall water film generation resistance reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045192.1U CN213655336U (en) | 2020-09-17 | 2020-09-17 | High-concentration ash slurry conveying pipeline inner wall water film generation resistance reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213655336U true CN213655336U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022045192.1U Active CN213655336U (en) | 2020-09-17 | 2020-09-17 | High-concentration ash slurry conveying pipeline inner wall water film generation resistance reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213655336U (en) |
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- 2020-09-17 CN CN202022045192.1U patent/CN213655336U/en active Active
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