CN216715277U - Flue gas denitration uniform sampling valve - Google Patents
Flue gas denitration uniform sampling valve Download PDFInfo
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- CN216715277U CN216715277U CN202123168304.3U CN202123168304U CN216715277U CN 216715277 U CN216715277 U CN 216715277U CN 202123168304 U CN202123168304 U CN 202123168304U CN 216715277 U CN216715277 U CN 216715277U
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Abstract
The utility model discloses a flue gas denitration uniform sampling valve, which relates to the technical field of valves used in a denitration system, and comprises the following components: the sampling tube is divided into two sections, a wedge-shaped gap is arranged between the two sections of sampling tubes, and the two opposite ends of the two sections of sampling tubes are respectively used for connecting the detection device and the flue gas pipeline; the wedge-shaped gap is arranged in the first sealing box; one end of the shaft sleeve is positioned in the first sealing box, and the other end of the shaft sleeve is positioned outside the first sealing box; the connecting shaft penetrates through the shaft sleeve and is in sealed sliding connection with the shaft sleeve; the telescopic mechanism is connected with one end of the connecting shaft; and the inserting plate is connected with the other end of the connecting shaft and is matched with the wedge-shaped gap. Compared with the traditional valve, the valve has simpler structure and simple processing technology, so the production cost is low; compared with the traditional ball valve butterfly valve and the like, the telescopic mechanism can be farther away from the flue gas pipeline, so that the high temperature resistance is better.
Description
Technical Field
The utility model relates to the technical field of valves used in a denitration system, in particular to a uniform sampling valve for flue gas denitration.
Background
Nitrogen oxides (NOx) are one of the major atmospheric pollutants, and the photochemical smog formed with hydrocarbons severely harm human health. In addition, nitrogen oxides are also a main cause of acid rain, and the frequent occurrence of acid rain has great influence on the ecological environment and national economy.
With the improvement of national environmental protection requirements, the ultra-low emission of the flue gas becomes the trend of environmental protection, and in order to enable the NOx to reach the ultra-low emission requirement, the Selective Catalytic Reduction (SCR) denitration becomes a mainstream process, namely, a reducing agent is utilized to selectively react with the NOx in the flue gas to generate non-toxic and pollution-free nitrogen (N2) and water (H2O), so that the aim of denitration is fulfilled.
In order to measure the flue gas of denitration export, need set up a plurality of sampling branch pipes, each branch pipe need set up the sampling valves group, and current sampling valve is valves such as traditional electronic or pneumatic ball valve, butterfly valve, and not only the cost is high, and high temperature is the deformation damage easily moreover, and the solenoid valve can not be high temperature resistant flue gas again, leads to a series of problems such as even sample cost height, control difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flue gas denitration uniform sampling valve, which comprises: the sampling tube is divided into two sections, a wedge-shaped gap is arranged between the two sections of sampling tubes, and the two opposite ends of the two sections of sampling tubes are respectively used for connecting the detection device and the flue gas pipeline; the wedge-shaped gap is arranged in the first sealing box; one end of the shaft sleeve is positioned in the first sealing box, and the other end of the shaft sleeve is positioned outside the first sealing box; the connecting shaft penetrates through the shaft sleeve and is in sealed sliding connection with the shaft sleeve; the telescopic mechanism is connected with one end of the connecting shaft; and the inserting plate is connected with the other end of the connecting shaft and is matched with the wedge-shaped gap.
The utility model is further provided with: the shaft sleeve is provided with a sliding groove, and the inserting plate is arranged in the sliding groove in a sliding mode.
The beneficial technical effects of the utility model are as follows:
compared with the traditional valve, the valve has simpler structure and simple processing technology from the whole structure, so the production cost is low; compared with the traditional ball valve butterfly valve and the like, the telescopic mechanism can be farther away from the flue gas pipeline, so that the high temperature resistance is better.
Drawings
FIG. 1 is a schematic perspective view of a flue gas denitration uniform sampling valve of the present invention, which is shown in FIG. 1;
FIG. 2 is a schematic perspective view of a flue gas denitration uniform sampling valve of the present invention, shown in FIG. 2;
FIG. 3 is a sectional view of the flue gas denitration uniform sampling valve of the present invention.
Reference numerals: 1. a sampling tube; 2. a first seal box; 3. a support frame; 4. a second sealed box; 5. a shaft sleeve; 6. a connecting shaft; 7. a telescoping mechanism; 8. inserting plates; 9. a wedge shaped void.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1-3, the utility model provides a flue gas denitration uniform sampling valve, which comprises a sampling tube 1, a first sealing box 2, a supporting frame 3, a second sealing box 4, a shaft sleeve 5, an inserting plate 8 and a connecting shaft 6.
The sampling tube 1 is divided into two sections, a wedge-shaped gap 9 is arranged between the two sections of sampling tubes 1, and the two opposite ends of the two sections of sampling tubes 1 are respectively used for connecting a detection device and a flue gas pipeline. Sampling tube 1 is welded to first sealing box 2 and wedge-shaped gap 9 is provided in first sealing box 2.
One end of the shaft sleeve 5 is positioned in the supporting frame 3, the other end of the shaft sleeve 5 penetrates into the first sealing box 2, and the shaft sleeve 5 is connected with the first sealing box 2 in a welding mode to achieve fixed connection and sealing. The shaft sleeve 5 is arranged perpendicular to the sampling tube 1.
The connecting shaft 6 is arranged in the shaft sleeve 5 in a penetrating way and is connected with the shaft sleeve 5 in a sliding way. One end of the connecting shaft 6 is connected with the output end of the telescopic mechanism 7 through a coupler, and the other end of the connecting shaft 6 is welded with a plug board 8. The telescopic mechanism 7 is fixed in the second seal box 4, and the telescopic mechanism 7 can be a pneumatic telescopic cylinder or an electric telescopic cylinder. When the telescopic mechanism 7 is actuated, the inserting plate 8 is driven to move. The insert plate 8 is adapted to the shape of the wedge-shaped recess 9. When the inserting plate 8 is completely inserted into the wedge-shaped gap 9, the two sections of the sampling tubes 1 can be blocked.
And a sealing ring is arranged on the inner wall of one end of the shaft sleeve 5 close to the telescopic mechanism 7 and used for preventing smoke from leaking. A chute is arranged on the pipe wall of one end of the shaft sleeve 5 far away from the telescopic mechanism 7. The inserting plate 8 is arranged in the sliding groove in a sliding mode, and the sliding groove is used for limiting the inserting plate 8.
When the telescopic mechanism 7 is in a withdrawing state, the inserting plate 8 leaves the wedge-shaped gap 9, the smoke reaches the detection device through the first sealing box 2 and the two sections of sampling tubes 1, and the detection device can detect the smoke at the moment. After sampling is finished, the telescopic mechanism 7 is actuated to enable the inserting plate 8 to be inserted into the wedge-shaped gap 9 until the two sections of the sampling tubes 1 are blocked. The detection device can not detect after plugging.
Compared with the traditional valve, the valve has the advantages that the structure is simpler, the processing technology is simple, and the production cost is low; compared with the traditional ball valve butterfly valve and the like, the telescopic mechanism 7 can be farther away from the flue gas pipeline, so that the high temperature resistance is better.
While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.
Claims (2)
1. The utility model provides a flue gas denitration uniform sampling valve which characterized in that includes:
the sampling tube (1) is divided into two sections, a wedge-shaped gap (9) is arranged between the two sections of the sampling tube (1), and two opposite ends of the two sections of the sampling tube (1) are respectively used for connecting a detection device and a flue gas pipeline;
a first sealed box (2), the wedge-shaped gap (9) being arranged within the first sealed box (2);
the shaft sleeve (5), one end of the shaft sleeve (5) is positioned in the first sealing box (2) and the other end of the shaft sleeve (5) is positioned outside the first sealing box (2);
the connecting shaft (6) is arranged in the shaft sleeve (5) in a penetrating mode and is in sealing sliding connection with the shaft sleeve (5);
the telescopic mechanism (7) is connected with one end of the connecting shaft (6);
and the inserting plate (8) is connected with the other end of the connecting shaft (6), and the inserting plate (8) is matched with the wedge-shaped gap (9).
2. The flue gas denitration uniform sampling valve of claim 1, characterized in that: the shaft sleeve (5) is provided with a sliding groove, and the inserting plate (8) is arranged in the sliding groove in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123168304.3U CN216715277U (en) | 2021-12-16 | 2021-12-16 | Flue gas denitration uniform sampling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123168304.3U CN216715277U (en) | 2021-12-16 | 2021-12-16 | Flue gas denitration uniform sampling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715277U true CN216715277U (en) | 2022-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123168304.3U Active CN216715277U (en) | 2021-12-16 | 2021-12-16 | Flue gas denitration uniform sampling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715277U (en) |
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2021
- 2021-12-16 CN CN202123168304.3U patent/CN216715277U/en active Active
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