CN202915052U - Steam temperature-reducing and pressure-reducing device - Google Patents
Steam temperature-reducing and pressure-reducing device Download PDFInfo
- Publication number
- CN202915052U CN202915052U CN 201220629071 CN201220629071U CN202915052U CN 202915052 U CN202915052 U CN 202915052U CN 201220629071 CN201220629071 CN 201220629071 CN 201220629071 U CN201220629071 U CN 201220629071U CN 202915052 U CN202915052 U CN 202915052U
- Authority
- CN
- China
- Prior art keywords
- steam
- valve
- desuperheating
- nozzle
- reducing
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a steam temperature-reducing and pressure-reducing device which comprises a sleeve-type pressure-reducing regulation valve which is arranged on an inlet of a steam pipeline, the steam pipeline is provided with a plurality of sprayers at intervals along the circumferential direction, and the sprayers spray water into the steam pipeline. The steam temperature-reducing and pressure-reducing device is good in temperature-reducing and pressure-reducing effect under low steam load, and shortens the length of a temperature-reducing mechanism.
Description
Technical field
The utility model relates to a kind of device that steam in the steam line is carried out pressure and temperature reducing.
Background technique
Existing Desuperheating and decompressing device for steam, the mechanism of decompressor adopts the adjusting of reducing pressure of two-seater plunger reduction valve and restricting orifice, desuperheat mechanism adopts single flute type nozzle (being plugged on the Venturi tube) and temperature reducing regulation valve to carry out temperature reducing regulation, the Desuperheating and decompressing device for steam of this mode uses steam load (flow) when equaling design discharge in reality, pressure and temperature reducing effect normal; And when steam load (flow) be design discharge 1/3 or when lower, the temperature lowering effect of two-seater plunger reduction valve effect of easing stress and single flute type nozzle and temperature reducing regulation valve all can't satisfy usage requirement.
The problem that this moment, the mechanism of decompressor occurred generally is, less steam load so that two-seater plunger reduction valve be operated under the little aperture, because flow reduces, restricting orifice can't play effect of easing stress, all decompression pressure reduction all leans on two-seater plunger reduction valve to finish, and like this, valve body and valve sealing face is washed away seriously, cause leakage class and decompression regulating effect to reduce, the noise of valve internal also can obviously increase.
And desuperheat mechanism adopts the form of single flute type nozzle (being plugged on the Venturi tube) and temperature reducing regulation valve, Venturi tube is used for improving steam flow rate, the water column that is sprayed in the steam line by flute shape nozzle is smashed, mixes rear vaporization by steam at a high speed, the adjusting of the water yield is finished by the temperature reducing regulation valve, reaches the purpose of steam temperature reducing.When steam load (flow) when reducing, steam flow rate step-down in the steam line, because injection diameter and the quantity of flute shape nozzle are fixed, cooling water vaporization effect variation in the steam line, a large amount of cooling waters can not be vaporized, cause the hydrophobic amount of pipe-line system to increase, the water hammer that the generation degree is different, desuperheat mechanism is desuperheat normally.In addition, as the Venturi tube that flute shape nozzle is played auxiliary vaporization, in order to reach the effect of vaporization, the Venturi tube Len req is longer.
The model utility content
The problems referred to above that exist in order to solve existing Desuperheating and decompressing device for steam, the utility model provide a kind of under low steam load the Desuperheating and decompressing device for steam of effective, the desuperheat mechanism shorten length of pressure and temperature reducing.
The utility model adopts following technological scheme:
Desuperheating and decompressing device for steam comprises the telescopic decompression valve that is installed in steam inlet channel, on the described steam line along circumferentially being arranged at intervals with a plurality of nozzles of spraying water in the steam line.
Further, described nozzle is the hollow cone nozzle, is provided with the runner that makes the current spiral motion in the described hollow cone nozzle.Current are carbon fiber in this runner internal spiral shape rotation just from nozzle current out.
Further, described decompression valve comprises valve body assembly, is positioned at the valve seat of the sleeve-shaped of valve body assembly, at the spool that valve seat slides, and the external diameter of spool equals the internal diameter of valve seat, moves up and down by spool, opens or seal valve port.
Preferably, the valve port of described decompression valve is pressed the equal percentage design.
Preferably, described nozzle threads is connected in the nozzle carrier.Cleaning for convenience detach like this.
Preferably, along circumferentially being arranged at intervals with three hollow cone nozzles, the intake pipe of three hollow cone nozzles communicates on the described steam line.
Preferably, described valve body assembly comprises valve body and is fixedly connected on valve gap on the valve body.
Technical conceive of the present utility model is: carry out pressure by telescopic decompression valve and regulate, the decompression valve unbalanced force of this structure is little, and good stability be difficult for vibration, and permissible pressure is large, and the low noise effect of falling is arranged; The valve port of this decompression valve is pressed the equal percentage design, and good decompression regulating effect is also arranged when small flow.
Along circumferential interval a plurality of nozzles are set on the steam line and carry out Multidirectional water spraying, nozzle quantity is according to steam water flow and the design of desuperheat amplitude, and like this, cooling water sprays into steam line from a plurality of nozzles, and flow adjustment range is wider.This Desuperheating and decompressing device for steam can make the load regulating ratio bring up to 10:1 from common 3:1, even at load reduction by 1/10 o'clock, Desuperheating and decompressing device for steam can also be vaporized desuperheat steam before desuperheat steam reaches the steam line bottom fully, and simultaneously decompression also can meet the demands.
In addition, nozzle adopts the hollow cone nozzle, be provided with the runner that makes the current spiral motion in the hollow cone nozzle, be carbon fiber from hollow cone nozzle current out, compare with the solid water column that common flute shape nozzle sprays, the drop diameter of carbon fiber is less than the drop diameter (200 ~ 400 μ m) of solid water column, reach 30 ~ 80 μ m, like this, the cooling water of hollow cone nozzle ejection directly is vaporific, not needing to adopt Venturi tube to improve flow velocity increases atomizing effect, can shorten so the required time of cooling water vaporization, makes desuperheat mechanism length optimization.
The beneficial effects of the utility model: (1) telescopic decompression valve has good using effect when the little aperture long-term work of small flow; (2) the cooling water vaporization rate is fast, the reducing-and-cooling plant shorten length; (3) load of reducing-and-cooling plant (flow) regulating ratio is brought up to 1:10 from 1:3.
Description of drawings
Fig. 1 is the utility model embodiment's scheme of installation.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the structural representation of the utility model embodiment's valve seat.
Fig. 4 is the structural representation of the utility model embodiment's spool.
Drawing reference numeral: 1-steam line; The 2-nozzle; The 3-nozzle carrier; The 4-intake pipe; The 51-valve body; The 52-valve gap; The 53-valve seat; The 54-spool; 6-actuator; The 7-current.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
With reference to Fig. 1-4: Desuperheating and decompressing device for steam, comprise the telescopic decompression valve that is installed in steam line 1 entrance, along circumferentially being arranged at intervals with a plurality of nozzles 2 to steam line 1 interior water spray, described nozzle 2 is threaded in the nozzle carrier 3 on the described steam line 1.
Described nozzle 2 is the hollow cone nozzle, is provided with the runner that makes the current spiral motion in the described hollow cone nozzle.Current are carbon fiber in this runner internal spiral shape rotation just from nozzle current 7 out.In the present embodiment, along circumferentially being arranged at intervals with three hollow cone nozzles, the intake pipe 4 of three hollow cone nozzles communicates on the described steam line 1.
Described decompression valve comprises valve body assembly, valve body assembly comprises valve body 51 and is fixedly connected on valve gap 52 on the valve body 51, be provided with the valve seat 53 of sleeve-shaped in the described valve body 51, spool 54 slides in valve seat 53, the external diameter of spool 54 equals the internal diameter of valve seat 53, spool 54 upper ends connect actuator 6, move up and down by spool 54, open or seal valve port.The valve port of described decompression valve is pressed the equal percentage design.The implication of equal percentage design refers on different stroke apertures, the unit stroke changes the flow that the variation of caused flow puts therewith and is directly proportional on the every bit of stroke, its advantage is flow hour, changes in flow rate is little, when flow is large, then changes in flow rate is large, namely on different opening, has identical degree of regulation.The equal percentage design is the technical term of related domain, is not repeated at this.
In the present embodiment, carry out pressure by telescopic decompression valve and regulate, the decompression valve unbalanced force of this structure is little, and good stability be difficult for vibration, and permissible pressure is large, and the low noise effect of falling is arranged; The valve port of this decompression valve is pressed the equal percentage design, and good decompression regulating effect is also arranged when small flow.
Along circumferential interval three nozzles 2 are set on the steam line 1 and carry out Multidirectional water spraying, nozzle quantity is according to steam water flow and the design of desuperheat amplitude, like this, cooling water sprays into steam line from a plurality of nozzles, flow adjustment range is wide, only have 30% ~ 110% to compare with the single-nozzle flow adjustment range, three nozzles are regulated together, and flow adjustment range can reach 9% ~ 144%.This Desuperheating and decompressing device for steam can make the load regulating ratio bring up to 10:1 from common 3:1, though at load reduction by 1/10 o'clock, Desuperheating and decompressing device for steam can also be vaporized desuperheat steam before desuperheat steam reaches steam line bottom fully.
In addition, nozzle 2 adopts the hollow cone nozzle, be provided with the runner that makes the current spiral motion in the hollow cone nozzle, be carbon fiber from hollow cone nozzle current 7 out, compare with the solid water column that common flute shape nozzle sprays, the drop diameter of carbon fiber is less than the drop diameter (200 ~ 400 μ m) of solid water column, reach 30 ~ 80 μ m, like this, the cooling water of hollow cone nozzle ejection directly is vaporific, not needing to adopt Venturi tube to improve flow velocity increases atomizing effect, can shorten so the required time of cooling water vaporization, makes desuperheat mechanism length optimization.
Above-described embodiment only is enumerating of the utility model technical conceive way of realization; protection domain of the present utility model is not limited only to above-described embodiment, and protection domain of the present utility model may extend to those skilled in the art according to the thinkable equivalent technologies means of technical conceive of the present utility model.
Claims (7)
1. Desuperheating and decompressing device for steam is characterized in that: comprise the telescopic decompression valve that is installed in steam inlet channel, on the described steam line along circumferentially being arranged at intervals with a plurality of nozzles of spraying water in the steam line.
2. Desuperheating and decompressing device for steam as claimed in claim 1, it is characterized in that: described nozzle is the hollow cone nozzle, is provided with the runner that makes the current spiral motion in the described hollow cone nozzle.
3. Desuperheating and decompressing device for steam as claimed in claim 1 or 2, it is characterized in that: the spool that described decompression valve comprises valve body assembly, is positioned at the valve seat of the sleeve-shaped of valve body assembly, slide at valve seat, the external diameter of spool equals the internal diameter of valve seat, move up and down by spool, open or seal valve port.
4. Desuperheating and decompressing device for steam as claimed in claim 3 is characterized in that: the valve port of described decompression valve is pressed the equal percentage design.
5. Desuperheating and decompressing device for steam as claimed in claim 4, it is characterized in that: described nozzle threads is connected in the nozzle carrier.
6. Desuperheating and decompressing device for steam as claimed in claim 5 is characterized in that: along circumferentially being arranged at intervals with three hollow cone nozzles, the intake pipe of three hollow cone nozzles communicates on the described steam line.
7. Desuperheating and decompressing device for steam as claimed in claim 6 is characterized in that: described valve body assembly comprises valve body and is fixedly connected on valve gap on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220629071 CN202915052U (en) | 2012-11-23 | 2012-11-23 | Steam temperature-reducing and pressure-reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220629071 CN202915052U (en) | 2012-11-23 | 2012-11-23 | Steam temperature-reducing and pressure-reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915052U true CN202915052U (en) | 2013-05-01 |
Family
ID=48163368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220629071 Expired - Fee Related CN202915052U (en) | 2012-11-23 | 2012-11-23 | Steam temperature-reducing and pressure-reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915052U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109833985A (en) * | 2019-03-14 | 2019-06-04 | 重庆川仪调节阀有限公司 | The atomizing nozzle structure of desuperheat valve |
-
2012
- 2012-11-23 CN CN 201220629071 patent/CN202915052U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109833985A (en) * | 2019-03-14 | 2019-06-04 | 重庆川仪调节阀有限公司 | The atomizing nozzle structure of desuperheat valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102500475B (en) | Pulse type micro-sprinkling irrigation spray head | |
| CN205146479U (en) | Spring atomizing nozzle | |
| CN101907290A (en) | Overall regulation and water spraying atomization steam temperature reducing device | |
| CN203770774U (en) | Steam pressure reducing and temperature lowering valve | |
| CN103899808A (en) | Steam pressure reducing cooling valve | |
| CN105149126A (en) | Atomizing nozzle of garbage leachate back-spraying system | |
| CN202915052U (en) | Steam temperature-reducing and pressure-reducing device | |
| CN209229352U (en) | A kind of integral type reducing-and-cooling plant | |
| CN101972719A (en) | Non-rotating extensible variable sprayer | |
| CN105080743B (en) | A kind of sprinkling irrigation sprinkler head auxiliary jet device | |
| CN204656772U (en) | A kind of two phase flow atomization aeration nozzle | |
| CN201008810Y (en) | Adjusting type showerhead | |
| CN203442826U (en) | Combustor nozzle | |
| CN202270485U (en) | Adjustable injector | |
| CN209940920U (en) | Compressed rich gas washing device in catalytic cracking device | |
| CN202010598U (en) | Steam atomization type porous nozzle apparatus | |
| CN202253588U (en) | Desuperheater with adjustable spiral nozzles | |
| CN201871441U (en) | Air-water atomizing nozzle | |
| CN202756152U (en) | Connecting structure of oil atomizer body and oil inlet connector | |
| CN203115983U (en) | Automatic adjusting spray nozzle | |
| CN201755538U (en) | Nozzle for cooling tower spray head | |
| CN202915344U (en) | Steam desuperheater | |
| CN108450298B (en) | Spray head for realizing high atomization effect under low pressure condition | |
| CN205949130U (en) | Atomizing reducing temperature equipment with adjustable | |
| CN2636991Y (en) | Automatic atomization spray nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20191123 |