CN212451468U - Gas-gas ejector - Google Patents
Gas-gas ejector Download PDFInfo
- Publication number
- CN212451468U CN212451468U CN202020909425.5U CN202020909425U CN212451468U CN 212451468 U CN212451468 U CN 212451468U CN 202020909425 U CN202020909425 U CN 202020909425U CN 212451468 U CN212451468 U CN 212451468U
- Authority
- CN
- China
- Prior art keywords
- gas
- section
- pressure
- receiving chamber
- low
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a gas-gas ejector belongs to liquid pump or elastic fluid pump field. Comprises an injection nozzle, a low-pressure gas inlet section, a gas receiving chamber, a contraction section, a gas mixing section and an expansion section; wherein the low-pressure gas inlet section, the contraction section and the expansion section are all conical pipes, and the gas receiving chamber and the gas mixing section are all cylindrical pipes; the low-pressure gas inlet section and the large end of the contraction section are correspondingly connected to two ends of the gas receiving chamber, and the small end of the contraction section and the small end of the expansion section are correspondingly connected to two ends of the gas mixing section; the jet nozzle is arranged in the gas receiving chamber, the nozzle direction of the jet nozzle faces the contraction section, and a high-pressure gas inlet pipe connected to the jet nozzle penetrates through the gas receiving chamber and is connected with a high-pressure clean gas pipe. The ejector is simple in structure, convenient to maintain and free of energy consumption, full recycling of pressure-equalizing coal gas is truly achieved, and environmental pollution is reduced.
Description
Technical Field
The utility model belongs to liquid pump or elastic fluid pump field, concretely relates to gas-gas ejector.
Background
When charging a blast furnace, the charging bucket at the top of the furnace is generally subjected to pressure equalizing twice, wherein the pressure equalizing at the first time adopts clean gas or semi-clean gas, and the pressure equalizing at the second time adopts nitrogen. For a large-scale blast furnace, the pressure-equalizing and bleeding coal gas of the charging bucket is generally subjected to primary dust removal through a cyclone dust collector at the top of the furnace, and then directly discharged into the atmosphere after passing through a silencer; for a small blast furnace, most of the pressure-equalizing diffused coal gas is directly discharged to the air without dust removal. The discharge mode of the pressure-equalizing coal gas not only causes energy waste, but also causes dust pollution and noise pollution.
In the steel industry, energy consumption and pollution generated by iron making blast furnaces account for an absolute proportion of the whole steel process. At present, most of blast furnace top pressure-sharing gas in China is directly diffused to the air, so that the resource waste is caused, and the environment is polluted by noise, waste gas and dust generated in the pressure-discharging and diffusing process. Therefore, the recovery of the pressure-equalizing gas is imperative.
Nowadays, there are many technologies related to the pressure equalizing gas recovery of the charging bucket at the top of the blast furnace. One method is to purify the diffused gas and then directly convey the purified gas to a gas pipe network, and the method has the defects that a small amount of residual gas still exists in a charging bucket after the pressure of the charging bucket is balanced with the pressure of the gas pipe network, and finally, part of the gas needs to be diffused to the air. The other method adopts high-pressure nitrogen for injection, so that the gas in the charging bucket can completely enter a gas pipe network, but the method has the defects that the input of the nitrogen dilutes the gas component, the heat value of the gas is reduced, the value of the recovered gas is reduced, and simultaneously, a large amount of nitrogen is consumed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a gas ejector to the pressure-equalizing diffuses coal gas with the blast furnace charging process and retrieves and recycles, creates economic benefits, improves blast furnace production environment, and ensures that blast furnace production operation rate is not influenced.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a gas-gas ejector comprises an ejector nozzle, a low-pressure gas inlet section, a gas receiving chamber, a contraction section, a gas mixing section and an expansion section; wherein the low-pressure gas inlet section, the contraction section and the expansion section are all conical pipes, and the gas receiving chamber and the gas mixing section are all cylindrical pipes; the low-pressure gas inlet section and the large end of the contraction section are correspondingly connected to two ends of the gas receiving chamber, and the small end of the contraction section and the small end of the expansion section are correspondingly connected to two ends of the gas mixing section; the jet nozzle is arranged in the gas receiving chamber, the nozzle direction of the jet nozzle faces the contraction section, and a high-pressure gas inlet pipe connected to the jet nozzle penetrates through the gas receiving chamber and is connected with a high-pressure clean gas pipe.
Furthermore, the pipe diameter of the gas receiving chamber is larger than that of the gas mixing section.
Furthermore, a manhole is arranged on the gas receiving chamber.
Further, a high pressure gas inlet pipe extends from the manhole.
Furthermore, a purging interface is arranged on the expansion section.
Furthermore, a support seat is arranged on the gas mixing section.
Furthermore, the gas receiving chamber is provided with an observation hole.
Furthermore, a diffusion opening is arranged on the low-pressure gas inlet section.
The beneficial effects of the utility model reside in that:
simple structure, easy processing, small occupied area, easy arrangement, convenient maintenance, low maintenance cost and low equipment investment. The high-pressure clean gas is used as an injection power gas source, electric energy, water, nitrogen, steam and the like are not required to be consumed, energy consumption is avoided, the heat value of the gas is not reduced, full recycling of the pressure-equalizing gas is truly realized, energy is saved, and environmental pollution is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a front view of the present invention.
Reference numerals:
the low-pressure gas inlet section 1, the injection nozzle 2, the high-pressure gas inlet pipe 3, the gas receiving chamber 4, the contraction section 5, the supporting seat 6, the gas mixing section 7, the expansion section 8, the manhole 9, the observation hole 10, the purging interface 11 and the diffusing port 12.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 2, a gas-gas injector comprises an injection nozzle 2, and further comprises a low-pressure gas inlet section 1, a gas receiving chamber 4, a contraction section 5, a gas mixing section 7 and an expansion section 8 which are sequentially connected in the axial direction along the gas flow direction; wherein the low-pressure gas inlet section 1, the contraction section 5 and the expansion section 8 are all conical pipes, and the gas receiving chamber 4 and the gas mixing section 7 are all cylindrical pipes; the large ends of the low-pressure gas inlet section 1 and the contraction section 5 are correspondingly connected to the two ends of the gas receiving chamber 4, and the small end of the contraction section 5 and the small end of the expansion section 8 are correspondingly connected to the two ends of the gas mixing section 7; the injection nozzle 2 is arranged in the gas receiving chamber 4, the nozzle direction of the injection nozzle faces the contraction section 5, and a high-pressure gas inlet pipe 3 connected to the injection nozzle 2 penetrates out of the gas receiving chamber 4 and is connected with a high-pressure clean gas pipe.
Specifically, the big end of the contraction section 5 is fixedly connected with the gas receiving chamber 4, the small end of the contraction section 5 is connected with the gas mixing section 7 through a flange, the injection nozzle 2 is positioned in front of the big end of the contraction section 5, the injection nozzle 2 is connected with the high-pressure gas inlet pipe 3, the gas receiving chamber 4 is connected with the big end of the low-pressure gas inlet section 1 through a flange, so that the injection device is installed in a segmented mode, the small end of the gas mixing section 7 and the small end of the expansion section 8 are connected through a flange, and the big end of the expansion section 8 is connected with an outlet pipeline through a flange.
In this embodiment, the pipe diameter (inner diameter) of the gas receiving chamber 4 is larger than the pipe diameter (inner diameter) of the gas mixing section 7. The gas receiving chamber 4 is provided with a manhole 9. The injection nozzle 2 is connected with a high-pressure gas inlet pipe 3, and the high-pressure gas inlet pipe 3 extends out of a manhole 9. Specifically, high-pressure gas inlet pipe 3 passes through manhole 9 and is connected with gas receiving chamber 4, and manhole 9 can be circular manhole also can be oval manhole, and the size of manhole 9 needs to satisfy the change requirement of drawing injection nozzle 2. Low-pressure gas is introduced into the low-pressure gas inlet section 1, and the high-pressure gas inlet pipe 3 is connected with the high-pressure clean gas pipe through a flange, so that the injection nozzle 2 can be conveniently replaced.
In this embodiment, the expansion section 8 is provided with a purge port 11. The low-pressure gas inlet section 1 is provided with a dispersion port 12 so as to facilitate the maintenance of the gas-gas ejector.
When the gas-gas ejector is vertically arranged, the gas mixing section 7 is provided with a supporting seat 6. Of course, the gas ejector can be horizontally arranged according to actual layout requirements.
In this embodiment, the gas receiving chamber 4 is provided with an observation hole 10, and the observation hole 10 is arranged on the side surface of the gas receiving chamber 4 and is symmetrically arranged with the manhole 9.
The working principle of the gas-gas ejector is explained as follows:
the gas-gas ejector is a gas machine and a mixing reaction device which utilize the turbulent diffusion effect of jet flow to mix two gas streams (low-pressure gas and high-pressure gas) with different pressures and trigger energy exchange.
Before entering the gas-gas ejector, high-pressure gas with higher pressure is called working gas, flows out of the ejector nozzle 2 at high speed, enters the gas receiving chamber 4, can generate momentum exchange through entrainment of surrounding low-pressure gas due to turbulent diffusion of jet flow, and the sucked gas with lower pressure is called ejector gas. The working gas and the injection gas are mixed in the gas mixing section 7 for momentum and mass exchange; during the flow, the velocity gradually equalizes, often with a pressure increase. The gas from the gas mixing section 7 enters the expanding section 8, and the pressure will continue to rise as the flow speed becomes slower. At the outlet of the expansion section 8, the pressure of the mixed gas is higher than that of the injected gas entering the gas receiving chamber 4, and at the moment, the mixed gas can smoothly enter a clean gas pipe network of the whole plant.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a gas ejector, includes the injection nozzle, its characterized in that: the low-pressure gas receiving chamber is communicated with the gas inlet section; wherein the low-pressure gas inlet section, the contraction section and the expansion section are all conical pipes, and the gas receiving chamber and the gas mixing section are all cylindrical pipes; the low-pressure gas inlet section and the large end of the contraction section are correspondingly connected to two ends of the gas receiving chamber, and the small end of the contraction section and the small end of the expansion section are correspondingly connected to two ends of the gas mixing section; the jet nozzle is arranged in the gas receiving chamber, the nozzle direction of the jet nozzle faces the contraction section, and a high-pressure gas inlet pipe connected to the jet nozzle penetrates through the gas receiving chamber and is connected with a high-pressure clean gas pipe.
2. The gas-gas eductor of claim 1 wherein: the pipe diameter of the gas receiving chamber is larger than that of the gas mixing section.
3. The gas-gas ejector according to claim 1 or 2, wherein: the gas receiving chamber is provided with a manhole.
4. The gas-gas eductor of claim 3 wherein: the high-pressure gas inlet pipe extends out of the manhole.
5. The gas-gas eductor of claim 1 wherein: the expansion section is provided with a purging interface.
6. The gas-gas eductor of claim 1 wherein: the gas mixing section is provided with a supporting seat.
7. The gas-gas eductor of claim 1 wherein: the gas receiving chamber is provided with an observation hole.
8. The gas-gas eductor of claim 1 wherein: the inlet section of the low-pressure gas is provided with a dispersion port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020909425.5U CN212451468U (en) | 2020-05-26 | 2020-05-26 | Gas-gas ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020909425.5U CN212451468U (en) | 2020-05-26 | 2020-05-26 | Gas-gas ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212451468U true CN212451468U (en) | 2021-02-02 |
Family
ID=74500735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020909425.5U Active CN212451468U (en) | 2020-05-26 | 2020-05-26 | Gas-gas ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212451468U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153832A (en) * | 2021-05-17 | 2021-07-23 | 中冶京诚工程技术有限公司 | Multi-nozzle composite ejector |
| CN113278749A (en) * | 2021-05-17 | 2021-08-20 | 中冶京诚工程技术有限公司 | Parallel pressure-equalizing diffused gas full-recovery method |
| CN115386668A (en) * | 2022-09-02 | 2022-11-25 | 中冶华天工程技术有限公司 | Novel pressure-equalizing coal gas full-recovery method |
-
2020
- 2020-05-26 CN CN202020909425.5U patent/CN212451468U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153832A (en) * | 2021-05-17 | 2021-07-23 | 中冶京诚工程技术有限公司 | Multi-nozzle composite ejector |
| CN113278749A (en) * | 2021-05-17 | 2021-08-20 | 中冶京诚工程技术有限公司 | Parallel pressure-equalizing diffused gas full-recovery method |
| CN115386668A (en) * | 2022-09-02 | 2022-11-25 | 中冶华天工程技术有限公司 | Novel pressure-equalizing coal gas full-recovery method |
| CN115386668B (en) * | 2022-09-02 | 2023-12-05 | 中冶华天工程技术有限公司 | Pressure equalizing gas full recovery method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212451468U (en) | Gas-gas ejector | |
| CN1916493A (en) | Combustion nozzle of gasification stove of using pressed dry coal powder | |
| CN104863904B (en) | One kind dynamically strong vortex lead jetting device | |
| CN109731491A (en) | A kind of double-current micro-nano bubble method for generation of jetting type and device of clashing | |
| CN101798518B (en) | Top gas confluence method and device of atmospheric and vacuum distillation tower | |
| CN203201879U (en) | Pipeline ejector pump | |
| CN111911465B (en) | Distributed binary spray pipe ejector device | |
| CN206425119U (en) | The ejector system for realizing circulation in derived energy chemical field, volleying and mixing | |
| CN201884189U (en) | Gas-liquid energy perforated pipe efficiency improving device | |
| CN104549056A (en) | Efficient dispersed venturi ejection reactor | |
| CN210171095U (en) | Device suitable for ultra-low emission of converter gas dust removal based on sound wave agglomeration | |
| CN110339696A (en) | Industrial waste gas denitration Hydrodynamic cavitation reactor and denitrating system | |
| CN202451477U (en) | Jetting type heat pump without receiving chamber | |
| CN210915479U (en) | Hydrodynamic cavitation oxygenation device | |
| CN212838645U (en) | Distributed binary spray pipe ejector device | |
| CN204386707U (en) | Marine tail gas denitrification apparatus | |
| CN201982148U (en) | Vacuum steam heating and pressurizing recovery device for steam turbine | |
| CN204710087U (en) | A kind of gas washing supercharging device | |
| CN102003418A (en) | Ejector | |
| CN201827161U (en) | Secondary injection ejector | |
| CN201297635Y (en) | Mobile shockwave dust-blower | |
| CN201864740U (en) | Mixing device for gas pipeline delivery | |
| CN105298594A (en) | Smoke discharging and flow jetting device | |
| CN219607092U (en) | Organic exhaust-gas treatment mixes wind tower with high-efficient mixed mode | |
| CN113151626B (en) | Parallel pressure equalizing and diffusing gas full recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |