CN202199449U - Variable-mass groove-type spray pipe - Google Patents
Variable-mass groove-type spray pipe Download PDFInfo
- Publication number
- CN202199449U CN202199449U CN2011202495547U CN201120249554U CN202199449U CN 202199449 U CN202199449 U CN 202199449U CN 2011202495547 U CN2011202495547 U CN 2011202495547U CN 201120249554 U CN201120249554 U CN 201120249554U CN 202199449 U CN202199449 U CN 202199449U
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- jet pipe
- variable
- spray pipe
- variable mass
- type spray
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Abstract
The utility model relates to a device for generating a high-speed gas flow in the industrial field, belongs to a structural improvement of a spray pipe of a boiler sootblower, and in particular relates to a variable-mass groove-type spray pipe. The variable-mass groove-type spray pipe is characterized in that a connecting flange is arranged at the inlet end of a pipe body, a diffusion segment is arranged on the pipe body behind the inlet end, and V-shaped open slots are uniformly distributed on the circumference of the pipe body at the diffusion segment and axially extend towards the outlet end of the pipe body. The variable-mass groove-type spray pipe has a simple structure and low cost, can increase the speed of the gas flow and improve the stability and pneumatic performance of the gas flow, and is suitable for acoustic sootblowers of large-sized boilers.
Description
Technical field
The utility model relates in the industrial technology field in order to produce the device of high velocity air, belongs to the improvement of boiler sootblower nozzle structure, particularly a kind of variable mass slot type jet pipe.
Background technology
The jet pipe of existing air-flow acoustical generator is all by " De Laval noz(zle) promptly is the pantographic jet pipe " design, and its runner dwindles earlier and enlarges, and allows air-flow after the venturi place reaches velocity of sound, further to be accelerated into supersonic flow.But the poor stability of air-flow, this will influence intensity of wave and efficient.
Stable for guaranteeing exit flow, fixedly the Laval jet pipe of profile can only be worked under the design back pressure, can not change the outlet Mach number as required.And obtain the air-flow of different Mach number in hope, fixedly the Laval jet pipe of profile then can't satisfy this requirement.For realizing that the nozzle exit gasflow mach number can require to change according to actual needs, adopted modification face Laval jet pipe in some research institutions, change flow area through the profile that changes jet pipe, thereby realize changing the purpose of outlet Mach number.But the mechanical mechanism of this jet pipe is complicated, and the Mach number excursion is little, and cost is very high.
Summary of the invention
The purpose of the utility model is to provide a kind of variable mass slot type jet pipe, and it is simple in structure, and cost is low, can make air-flow obtain higher speed, improves the stability and the aeroperformance of air-flow, is applicable to that the soot blower of big unit boiler uses.
The purpose of the utility model is achieved in that a kind of variable mass slot type jet pipe; The inlet end of body is provided with adpting flange; On the body at entrance point rear portion, diffuser is being set, on the body circle wall of diffuser, is being uniformly distributed be provided with and arrives the V-shaped open slot of the port of export vertically.
The utility model is being driven several V-type open slots along diffuser tube wall face, and portion gas goes out jet pipe through these concentrated flows, and gaseous mass remaining in the jet pipe gradually reduces, and the acceleration of can further expanding reaches required Mach number in outlet.The gaseous mass that goes out through the wall concentrated flow can be regulated according to the back pressure self adaptation, and therefore, the pressure ratio ratio of back pressure (inlet pressure with) that only needs to change jet pipe can reach and change the exit flow flow velocity, reaches very high flow velocity.It is simple in structure, and the Mach number excursion is big, and cost is low.The utility model is installed in the exit of acoustic wave ash ejector trunnion.The utility model is simple in structure, and cost is low, can make air-flow obtain higher speed, improves the stability and the aeroperformance of air-flow, is applicable to the acoustic wave ash ejector of big unit boiler.
Description of drawings
To combine accompanying drawing that the utility model is done further to describe below,
Fig. 1 is the main TV structure sketch map of the utility model,
Fig. 2 is the right TV structure sketch map of Fig. 1.
The specific embodiment
A kind of variable mass slot type jet pipe, like Fig. 1, shown in Figure 2, the inlet end of body 1 is provided with adpting flange 2, on the body at entrance point rear portion, diffuser is being set, and on body 1 circle wall of diffuser, is uniformly distributed be provided with to arrive the V-shaped open slot 3 of the port of export vertically.The length of diffuser is 180-184mm.11-13 of the quantity of V-type open slot 3.The A/F of V-type open slot 3 ends is 2-2.5mm.Stagger in the starting point space of the V-type open slot 3 that on body 1 circle wall, is uniformly distributed with, the distance that adjacent starting point staggers each other is 4-6mm.The length of body 1 is 200mm.Body 1 is made up of the heat-resistant antifriction stainless steel.
Claims (7)
1. variable mass slot type jet pipe; It is characterized in that: the inlet end of body (1) is provided with adpting flange (2); On the body at entrance point rear portion, diffuser is being set, on body (1) circle wall of diffuser, is being uniformly distributed be provided with and arrives the V-shaped open slot of the port of export (3) vertically.
2. a kind of variable mass slot type jet pipe according to claim 1, it is characterized in that: the length of diffuser is 180-184mm.
3. a kind of variable mass slot type jet pipe according to claim 1 is characterized in that: 11-13 of the quantity of V-type open slot (3).
4. a kind of variable mass slot type jet pipe according to claim 1 is characterized in that: the A/F of V-type open slot (3) end is 2-2.5mm.
5. a kind of variable mass slot type jet pipe according to claim 1 is characterized in that: stagger in the starting point space of the V-type open slot (3) that on body (1) circle wall, is uniformly distributed with, the distance that adjacent starting point staggers each other is 4-6mm.
6. a kind of variable mass slot type jet pipe according to claim 1, it is characterized in that: the length of body (1) is 200mm.
7. a kind of variable mass slot type jet pipe according to claim 1, it is characterized in that: body (1) is made up of the heat-resistant antifriction stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202495547U CN202199449U (en) | 2011-07-15 | 2011-07-15 | Variable-mass groove-type spray pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202495547U CN202199449U (en) | 2011-07-15 | 2011-07-15 | Variable-mass groove-type spray pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202199449U true CN202199449U (en) | 2012-04-25 |
Family
ID=45963587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202495547U Expired - Fee Related CN202199449U (en) | 2011-07-15 | 2011-07-15 | Variable-mass groove-type spray pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202199449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530647A (en) * | 2020-05-07 | 2020-08-14 | 中节能工业节能有限公司华坪分公司 | Spray nozzle for soot blower |
-
2011
- 2011-07-15 CN CN2011202495547U patent/CN202199449U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530647A (en) * | 2020-05-07 | 2020-08-14 | 中节能工业节能有限公司华坪分公司 | Spray nozzle for soot blower |
| CN111530647B (en) * | 2020-05-07 | 2021-04-20 | 中节能工业节能有限公司华坪分公司 | Spray nozzle for soot blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160829 Address after: 830000 room 229, R & D building, No. 201, Songshan street, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Zhong Neng Neng Neng Technology Co., Ltd. Address before: 830028, room 1, unit 3, building 1247, seven South Bay Road, 102, the Xinjiang Uygur Autonomous Region, Urumqi Patentee before: Wang Guangming Patentee before: Wang Wenxue |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20170715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |