CN217615391U - Gas protection double-flow method atomizer - Google Patents
Gas protection double-flow method atomizer Download PDFInfo
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- CN217615391U CN217615391U CN202123035711.7U CN202123035711U CN217615391U CN 217615391 U CN217615391 U CN 217615391U CN 202123035711 U CN202123035711 U CN 202123035711U CN 217615391 U CN217615391 U CN 217615391U
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Abstract
The utility model relates to a gas protection double-flow method atomizing spray head, which comprises a nozzle seat (1), a nozzle assembly, a gas protection cover (5), a screw (6) and a pipeline assembly; the pipeline assembly is connected with the nozzle holder (1), the nozzle assembly is installed on the nozzle holder (1), and the gas protection cover (5) is locked and positioned on the nozzle holder (1) through mechanisms such as a screw (6). The utility model discloses an atomizer through gas protection in order to keep apart flue gas and nozzle direct contact, solves under high temperature, high acid, the high humidity, the shorter problem of quenching nozzle life-span.
Description
Technical Field
The utility model belongs to the radiation protection field, concretely relates to gas protection double-flow method atomizer.
Background
There is an extremely urgent volume reduction treatment demand for wastes generated by nuclear facilities in China. Incineration treatment can greatly reduce the volume of waste compared with overpressure and cement solidification, and is an international general technology for treating radioactive solid combustible waste.
In the incineration of radioactive combustible waste, water spray quenching is one of the necessary processes. In the radioactive combustible waste, plastics, rubber, resin and the like account for a considerable proportion, and dioxin is inevitably generated in the incineration process; therefore, in the process of burning treatment, in order to reduce the generation of dioxin, the retention time of burning smoke at 300-500 ℃ needs to be shortened as much as possible; in the cooling measures, atomized water is used for rapidly cooling the flue gas, which is a common measure; in the process, as the spray head is at high temperature when in use and is in contact with corrosive smoke and water, the service environment is severe, and even if a corrosion-resistant material is used, the service life is often short.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a gas protection double current method atomizer through gas protection in order to keep apart flue gas and nozzle direct contact, solves the shorter problem of nozzle life-span.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the gas protection double-flow method atomizing spray head comprises a nozzle seat, a nozzle assembly, a gas protection cover, a screw and a pipeline assembly; the pipeline assembly is connected with the nozzle holder, the nozzle assembly is installed on the nozzle holder, and the gas protection cover is locked and positioned on the nozzle holder through mechanisms such as screws.
Further, the nozzle assembly includes an inner nozzle, an airflow distribution ring, and an outer nozzle; the inner nozzle is arranged on the nozzle seat, the air flow distribution ring is sleeved on the inner nozzle, the outer nozzle is arranged on the air flow distribution ring, and the air protection cover presses the outer nozzle through threads.
Further, the pipeline assembly comprises a chilled water pipe, an air supply pipe and an air compression pipe; the rapid cooling water pipe, the blast pipe and the air compression pipe are all connected with the nozzle seat
Furthermore, an annular gap is reserved between the inner nozzle and the outer nozzle, and the width of the annular gap is
ˉ
0.31.0mm。
Further, the height of the inner nozzle is not less than the height of the outer nozzle.
The utility model has the advantages of:
the utility model can isolate the flue gas from directly contacting the nozzle by gas protection, thus prolonging the service life; the spray head is a double-flow method atomizing spray head, and the quenching water is fully atomized by compressed air to ensure full cooling; because the spray head is at high temperature when in use, and contacts corrosive smoke and water, the use environment is severe, and the service life is often short even if a corrosion-resistant material is used; in the utility model, the direct contact between the flue gas and the inner and outer nozzles is avoided by externally adding the blowing air to protect the spray head, and the service life is prolonged;
the utility model uses the double-flow method atomizer to atomize the quench water fully by high-speed compressed air, thereby realizing the full cooling of the high-temperature flue gas, and because the tips of the inner and outer nozzles are easily affected by corrosion, the annular gap is too large after the outer nozzle is corroded, and the atomization effect is deteriorated; can be less than external nozzle after the internal nozzle corrodes, lead to the quench water directly to bear the pressure of pressure sky and unable normal outflow, so be equipped with the gas protection structure in the skin, avoid the direct contact of flue gas and nozzle through the air supply air.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a plan view of the present invention.
In the figure:
1-nozzle seat, 2-inner nozzle, 3-airflow distribution ring, 4-outer nozzle, 5-gas protection cover, 6-screw, 7-sharp cold water pipe, 8-blast pipe and 9-compressed air pipe.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention provides a gas-shielded dual-flow atomizer, which comprises a nozzle holder 1, a nozzle assembly, a gas protecting cover 5, a screw 6 and a pipeline assembly; the pipeline assembly is connected with the nozzle holder 1, the nozzle assembly is installed on the nozzle holder 1, and the gas protection cover 5 is locked and positioned on the nozzle holder 1 through the screw 6.
On this basis, the nozzle assembly comprises an inner nozzle 2, an air flow distribution ring 3 and an outer nozzle 4; the inner nozzle 2 is arranged on the nozzle seat 1, the airflow distribution ring 3 is sleeved on the inner nozzle 2, the outer nozzle 4 is arranged on the airflow distribution ring 3, and the gas protection cover 5 presses the outer nozzle 4 through threads.
The gas distribution ring 3 sits on the flange of the inner nozzle 2, the outer nozzle 4 sits on the gas distribution ring 3, the gas shield 5 presses the outer nozzle 4 by screwing and the position of the gas shield 5 is locked by the screw 6.
Based on the above, the pipeline assembly comprises a chilled water pipe 7, an air supply pipe 8 and an air compression pipe 9; the rapid cooling water pipe 7, the blast pipe 8 and the air compression pipe 9 are all connected with the nozzle holder 1.
When in use, the quenching water pipe 7 conveys quenching water into the inner nozzle 2, the blank pipe 9 conveys compressed air between the inner nozzle 2 and the outer nozzle 4, and the blast pipe 8 conveys air between the gas protection cover 5 and the outer nozzle 4.
For this purpose, an annular gap is left between the inner nozzle 2 and the outer nozzle 4, the width of said annular gap being
ˉ
0.31.0mm。
The annular gap between the inner nozzle 2 and the outer nozzle 4 can ensure the pressure air flow rate at the outlet of the nozzle, and the air flow distribution ring 3 ensures the uniform distribution of the pressure air flow to avoid the deviation of the spray from the center.
Based on this, the height of the inner nozzle 2 is not less than the height of the outer nozzle 4.
So set up, can avoid the pressure air blocking quench water.
For this purpose, the gas protection cap 5 is provided with gas flow distribution apertures.
So set up, can avoid the air supply air to blow the skew.
The utility model discloses a realize like this, at quench cooler operation in-process, whole pressure air and air supply air of opening, flue gas blow-through shower nozzle causes the corruption when avoiding countercurrent flow. When the flue gas reaches the working temperature, the quenching water is started and the flow is adjusted according to the heat exchange requirement. The quenching water is fully atomized under the action of high-speed compressed air. Meanwhile, the contact of the smoke and the spray head is avoided through outer layer air supply air between the outer spray nozzle 4 and the air protection cover 5, so that the inner spray nozzle 2 and the outer spray nozzle 4 of the spray head are protected, and the service life of the spray head is prolonged.
A gas protection double current method atomizer is not limited to above-mentioned specific implementation, and the field technical staff basis the utility model discloses a technical scheme reachs other embodiments, belongs to equally the technical innovation scope of the utility model.
Claims (3)
1. The utility model provides a gas protection double-flow method atomizer which characterized in that: the gas protection double-flow method atomizing spray head comprises a nozzle seat (1), a nozzle assembly, a gas protection cover (5), a screw (6) and a pipeline assembly; the pipeline assembly is connected with the nozzle holder (1), the nozzle assembly is installed on the nozzle holder (1), and the gas protection cover (5) is locked and positioned on the nozzle holder (1) through a screw (6);
the nozzle assembly comprises an inner nozzle (2), an air flow distribution ring (3) and an outer nozzle (4); the inner nozzle (2) is arranged on the nozzle seat (1), the airflow distribution ring (3) is sleeved on the inner nozzle (2), the outer nozzle (4) is arranged on the airflow distribution ring (3), and the gas protection cover (5) presses the outer nozzle (4) through threads; the pipeline assembly comprises a chilled water pipe (7), an air supply pipe (8) and an air compression pipe (9); the rapid cooling water pipe (7), the blast pipe (8) and the air compression pipe (9) are all connected with the nozzle holder (1).
2. A gas-shielded dual-flow atomizer according to claim 1, wherein: an annular gap is left between the inner nozzle (2) and the outer nozzle (4), and the width of the annular gap is 0.3-1.0 mm.
3. A gas-shielded dual-flow atomizer according to claim 1, wherein: the height of the inner nozzle (2) is not less than that of the outer nozzle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123035711.7U CN217615391U (en) | 2021-12-06 | 2021-12-06 | Gas protection double-flow method atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123035711.7U CN217615391U (en) | 2021-12-06 | 2021-12-06 | Gas protection double-flow method atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217615391U true CN217615391U (en) | 2022-10-21 |
Family
ID=83619001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123035711.7U Active CN217615391U (en) | 2021-12-06 | 2021-12-06 | Gas protection double-flow method atomizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217615391U (en) |
-
2021
- 2021-12-06 CN CN202123035711.7U patent/CN217615391U/en active Active
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