CN202813379U - Mixed utilization device for two different pressure gases - Google Patents
Mixed utilization device for two different pressure gases Download PDFInfo
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- CN202813379U CN202813379U CN 201220463969 CN201220463969U CN202813379U CN 202813379 U CN202813379 U CN 202813379U CN 201220463969 CN201220463969 CN 201220463969 CN 201220463969 U CN201220463969 U CN 201220463969U CN 202813379 U CN202813379 U CN 202813379U
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- mixed
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Abstract
The utility model provides a mixed utilization device for two different pressure gases, and relates to a device for mixing two different pressure gases, aiming at providing the mixed utilization device for the two different pressure gases, wherein the device is simple in structure, convenient to maintain, low in investment, and good in safety. The mixed utilization device for the two different pressure gases comprises a laval spray pipe and a housing, wherein one end of the housing is a high-pressure gas inlet, the other end of the housing is a mixed gas outlet, the side face of the housing is provided with a low-pressure gas inlet, the housing is internally provided with the laval spray pipe, the laval spray pipe consists of a contracting section, a narrow throat section and an expanding section, the contracting section is connected with the high-pressure gas inlet, the high-pressure gas inlet is connected with a high-pressure gas transporting pipe, the low-pressure gas inlet is connected with a low-pressure gas transporting pipe, and the mixed gas outlet is connected with a mixed gas transporting pipe. The utilization device is mainly used for the mixed utilization of blast furnace gas and converter gas.
Description
Technical field
The mixing use device of two kinds of different pressures combustion gas of the utility model relates to a kind of device that mixes two kinds of different pressures combustion gas.
Background technology
In iron and steel is produced, the coal gas that has coal gas that blast furnace produces and converter to produce, the pressure of these coal gas, caloric value, temperature, flow are different.How boiler being introduced in the combustion gas of these different pressures simultaneously burns, traditional method is that the combustion gas of different pressures installs that independently pipeline and burner are sent into boiler separately, can make system complex like this, increase many valve pipes and controlling unit, construction cost is increased, and operation maintenance is also very inconvenient.Simultaneously since system complex often the combustion gas leak source increase, virtually increase many potential safety hazards.
The utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved provides a kind of mixing arrangement of simple in structure, easy to maintenance, investment is low, security is good two kinds of different pressures combustion gas.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the mixing use device of two kinds of different pressures combustion gas, comprise Laval nozzle and housing, one end of housing is the high-pressure gas entrance, the other end of housing is the air mixture outlet, is provided with the low-pressure fuel gas entrance in the side of housing, is provided with Laval nozzle in enclosure interior, described Laval nozzle is comprised of contraction section, narrow larynx section and expansion segment, and contraction section is connected with the high-pressure gas entrance.
Described high-pressure gas entrance is connected with the high-pressure gas carrier pipe, and described low-pressure fuel gas entrance is connected with the low-pressure fuel gas carrier pipe, and described air mixture outlet is connected with the air mixture carrier pipe.
The utility model is compared with existing technology the beneficial effect that has: be connected with the high-pressure gas entrance by the contraction section with the Laval nozzle of enclosure interior, after high-pressure gas enters the contraction section of Laval nozzle from the high-pressure gas carrier pipe, the flow velocity of high-pressure gas increases sharply, thereby the pressure of high-pressure gas reduces, then enter expansion segment through narrow larynx section, this moment, the flow velocity of high-pressure gas further increased, and then the pressure of high-pressure gas further reduces, because the pressure of high-pressure gas reduces rapidly to cause the expansion segment outlet at Laval nozzle to produce negative pressure, this negative pressure will enter from the low-pressure fuel gas carrier pipe low-pressure fuel gas inspiration Laval nozzle of housing, evenly mix with post-decompression high-pressure gas, discharge from the air mixture outlet together again after the mixing, enter the boiler combustion heat supply through the air mixture carrier pipe.
This by Laval nozzle reduce high-pressure gas pressure, negative pressure suck the mode that low-pressure fuel gas mixes with high-pressure gas simple in structure, invest lowly, and security is good, maintenance is got up also very convenient.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is structural representation of the present utility model.
Among the figure, 1 is the high-pressure gas entrance, and 2 is Laval nozzle, and 3 is contraction section, and 4 is narrow larynx section, and 5 is expansion segment, and 6 is the low-pressure fuel gas entrance, and 7 is housing, and 8 are the air mixture outlet.
The specific embodiment
As shown in Figure 1, the mixing use device of two kinds of different pressures combustion gas, comprise Laval nozzle 2 and housing 7, one end of housing 7 is high-pressure gas entrance 1, the other end of housing 7 is air mixture outlet 8, is provided with low-pressure fuel gas entrance 6 in the side of housing 7, is provided with Laval nozzle 2 in housing 7 inside, described Laval nozzle 2 is comprised of contraction section 3, narrow larynx section 4 and expansion segment 5, and contraction section 3 is connected with high-pressure gas entrance 1.
Described high-pressure gas entrance 1 is connected with the high-pressure gas carrier pipe, and described low-pressure fuel gas entrance 6 is connected with the low-pressure fuel gas carrier pipe, and described air mixture outlet 8 is connected with the air mixture carrier pipe.
Described Laval nozzle 2 is prior art, is connected to form successively by contraction section 3, narrow larynx section 4 and expansion segment 5, is made of two conical pipes in fact exactly.
High-pressure gas in the utility model is blast furnace gas, and low-pressure fuel gas is coal gas of converter.
Claims (2)
1. the mixing use device of two kinds of different pressures combustion gas, it is characterized in that: comprise Laval nozzle (2) and housing (7), one end of housing (7) is high-pressure gas entrance (1), the other end of housing (7) is air mixture outlet (8), be provided with low-pressure fuel gas entrance (6) in the side of housing (7), be provided with Laval nozzle (2) in housing (7) inside, described Laval nozzle (2) is comprised of contraction section (3), narrow larynx section (4) and expansion segment (5), and contraction section (3) is connected with high-pressure gas entrance (1).
2. the mixing use device of two kinds of different pressures combustion gas according to claim 1, it is characterized in that: described high-pressure gas entrance (1) is connected with the high-pressure gas carrier pipe, described low-pressure fuel gas entrance (6) is connected with the low-pressure fuel gas carrier pipe, and described air mixture outlet (8) is connected with the air mixture carrier pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220463969 CN202813379U (en) | 2012-09-13 | 2012-09-13 | Mixed utilization device for two different pressure gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220463969 CN202813379U (en) | 2012-09-13 | 2012-09-13 | Mixed utilization device for two different pressure gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202813379U true CN202813379U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220463969 Expired - Fee Related CN202813379U (en) | 2012-09-13 | 2012-09-13 | Mixed utilization device for two different pressure gases |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202813379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983243A (en) * | 2015-07-10 | 2016-10-05 | 李保春 | Liquid oxygen and fuel oil mixing device |
| CN106247337A (en) * | 2016-09-28 | 2016-12-21 | 中国海洋石油总公司 | A kind of gain of heat injector for natural gas direct injection liquid liquefied petroleum gas |
-
2012
- 2012-09-13 CN CN 201220463969 patent/CN202813379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983243A (en) * | 2015-07-10 | 2016-10-05 | 李保春 | Liquid oxygen and fuel oil mixing device |
| CN106247337A (en) * | 2016-09-28 | 2016-12-21 | 中国海洋石油总公司 | A kind of gain of heat injector for natural gas direct injection liquid liquefied petroleum gas |
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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 |
Granted publication date: 20130320 Termination date: 20150913 |
|
| EXPY | Termination of patent right or utility model |