CN217139949U - Denitration SCR ammonia pipeline of thermal power plant prevents stifled device - Google Patents
Denitration SCR ammonia pipeline of thermal power plant prevents stifled device Download PDFInfo
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- CN217139949U CN217139949U CN202220614087.1U CN202220614087U CN217139949U CN 217139949 U CN217139949 U CN 217139949U CN 202220614087 U CN202220614087 U CN 202220614087U CN 217139949 U CN217139949 U CN 217139949U
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Abstract
The utility model discloses a denitration SCR ammonia pipeline of thermal power plant prevents stifled device, including admit air link, connecting rod, gas-distributing pipe, second nipple joint and extension post, install the connecting rod on the admit air link, and install the gas-distributing pipe on the admit air link, install first installation pipe on the gas-distributing pipe, be connected with first nipple joint on the first installation pipe, be connected with on the first nipple joint and prevent stifled filter. The anti-blocking device for the denitration SCR ammonia pipeline of the thermal power plant is provided with two anti-blocking filters, wherein the anti-blocking filters are arranged at the front part of the denitration SCR ammonia pipeline and are connected in parallel through two groups of filters, so that the filtering effect is enhanced, the blocking frequency of the original filter, a flowmeter and a flame arrester is reduced, and the excessive emission risk of NOx in boiler smoke is reduced; the ammonia injection amount is reduced, the generation of ammonium bisulfate (NH4HSO4) and the resistance of an air preheater are reduced, the load of a draught fan is reduced, and the energy is saved; reduce maintenance, operation intensity of labour, improve the denitration and spout ammonia equipment automation level.
Description
Technical Field
The utility model relates to a denitration SCR technical field specifically is a denitration SCR ammonia pipeline of thermal power plant prevents stifled device.
Background
The SCR denitration process flow mainly comprises an SCR catalytic reactor, an ammonia gas injection system, a flue gas bypass system, an ammonia storage and preparation system and the like, wherein the arrangement mode of the SCR catalytic reactor generally adopts a high-dust arrangement mode, namely the SCR catalytic reactor is arranged in a high-temperature flue between an economizer and an air preheater. In the position, the temperature of the flue gas can reach the optimal temperature of the reaction, the flue gas is evenly divided into two paths at the outlet of a boiler economizer, each path of flue gas enters a vertically arranged SCR reactor in parallel, namely each boiler is provided with two reactors, and the flue gas enters a catalyst layer after passing through a flow equalizer. An ammonia gas injection system is arranged before the flue gas enters the catalyst layer, and the flue gas and the ammonia gas are fully mixed and then subjected to catalyst reaction to remove NOX. The flue gas after reaction enters an air preheater, an electric precipitator, an induced draft fan and a desulfurization device and then is discharged into a chimney, and a filter, a flow meter and a flame arrester on the existing denitration SCR ammonia gas pipeline are frequently blocked due to various reasons such as pipeline corrosion and ammonia gas quality, so that the ultralow emission of NOx in the flue gas of a boiler is seriously influenced.
Therefore, we provide an anti-blocking device for a denitration SCR ammonia pipeline of a thermal power plant, so as to solve the problems provided in the above.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a denitration SCR ammonia pipeline of thermal power plant prevents stifled device to filter, flowmeter, spark arrester on the denitration SCR ammonia pipeline that present on solving the existing market that above-mentioned background art provided are frequent because of pipeline corrosion and various reasons such as ammonia quality, block up, seriously influence the problem that boiler flue gas NOx minimum discharged.
In order to achieve the above object, the utility model provides a following technical scheme: an anti-blocking device for a denitration SCR ammonia gas pipeline of a thermal power plant comprises an air inlet connecting end, a connecting rod, a gas distributing pipe, a second inner connecting pipe and an extension column, wherein the connecting rod is installed on the air inlet connecting end, the gas distributing pipe is installed on the air inlet connecting end, a first installation pipe is installed on the gas distributing pipe, the first installation pipe is connected with the first inner connecting pipe, an anti-blocking filter is connected onto the first inner connecting pipe, a second installation pipe is connected onto the anti-blocking filter, an air outlet connecting end is connected onto the second installation pipe, a first connecting groove is formed in the first installation pipe, a first telescopic groove is formed in the first connecting groove, a first spring is arranged in the first telescopic groove, a first push rod is connected onto the first spring, a first sealing block is installed on the first push rod, a second connecting groove is formed in the second installation pipe, and a second telescopic groove is formed in the second connecting groove, and a second spring is arranged in the second telescopic groove, a second push rod is connected to the second spring, a second sealing block is installed on the second push rod, a second inner connecting pipe is installed on the anti-blocking filter, and an extension column is installed on the first inner connecting pipe.
Preferably, the air inlet connecting end is connected with the air outlet connecting end through a connecting rod, the axis of the connecting rod is overlapped with the axis of the air inlet connecting end, and the outer diameter of the air inlet connecting end is larger than two times of the outer diameter of the air distributing pipe.
Preferably, the length of the first inner pipe is greater than that of the second inner pipe, the outer diameter of the second inner pipe is equal to that of the first inner pipe, and the first inner pipe is in sliding connection with the anti-blocking filter.
Preferably, the outer diameter of the anti-blocking filter is equal to that of the first mounting pipe, the outer diameter of the first mounting pipe is equal to that of the second mounting pipe, and the anti-blocking filter is fixedly connected with the second inner connecting pipe.
Preferably, the first sealing block is of a telescopic structure in the first connecting groove through a first spring, the telescopic distance of the first sealing block is greater than the length of the first inner nipple, and the length of the first connecting groove is greater than the length of the second connecting groove.
Preferably, the second sealing block is of a telescopic structure in the second connecting groove through a second spring, the telescopic distance of the second sealing block is equal to half of the depth of the second connecting groove, and the length of the second sealing block is greater than the outer diameter of the gas distribution pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the anti-blocking device for the denitration SCR ammonia pipeline of the thermal power plant,
(1) the anti-blocking filter is arranged at the front part of the denitration SCR ammonia pipeline, and the two groups of filters are connected in parallel, so that the filtering effect is enhanced, the blocking frequency of the original filter, a flowmeter and a flame arrester is reduced, and the excessive emission risk of the boiler flue gas NOx is reduced; the ammonia injection amount is reduced, the generation of ammonium bisulfate (NH4HSO4) and the resistance of an air preheater are reduced, the load of a draught fan is reduced, and the energy is saved; the labor intensity of maintenance and operation is reduced, and the automation level of the denitration ammonia spraying equipment is improved;
(2) be provided with first installation pipe and second installation pipe, manage through first installation and second and carry out the block to preventing stifled filter and connect, be convenient for dismantle preventing stifled filter, reduced the device's the maintenance degree of difficulty, and through the flexible function of sealed piece, seal the trachea when changing and prevent stifled filter, increased the device's security performance.
Drawings
Fig. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic side view of the air inlet connection end of the present invention;
fig. 4 is a schematic side view of the extension column of the present invention.
In the figure: 1. an air inlet connecting end; 2. a connecting rod; 3. a gas distributing pipe; 4. a first mounting tube; 5. a first inner connecting pipe; 6. an anti-clogging filter; 7. a second mounting tube; 8. an air outlet connecting end; 9. a first connecting groove; 10. a first telescopic slot; 11. a first spring; 12. a first push rod; 13. a first seal block; 14. a second connecting groove; 15. a second telescopic slot; 16. a second spring; 17. a second push rod; 18. a second seal block; 19. a second inner connecting pipe; 20. the post is extended.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a denitration SCR ammonia gas pipeline anti-blocking device of a thermal power plant comprises an air inlet connecting end 1, a connecting rod 2, a gas distribution pipe 3, a first installation pipe 4, a first inner connecting pipe 5, an anti-blocking filter 6, a second installation pipe 7, an air outlet connecting end 8, a first connecting groove 9, a first telescopic groove 10, a first spring 11, a first push rod 12, a first sealing block 13, a second connecting groove 14, a second telescopic groove 15, a second spring 16, a second push rod 17, a second sealing block 18, a second inner connecting pipe 19 and an extension column 20, wherein the connecting rod 2 is installed on the air inlet connecting end 1, the gas distribution pipe 3 is installed on the gas distribution pipe 3, the first installation pipe 4 is connected with the first inner connecting pipe 5, the anti-blocking filter 6 is connected on the first inner connecting pipe 5, the second installation pipe 7 is connected on the filter 6, the air outlet connecting end 8 is connected on the second installation pipe 7, first connecting groove 9 has been seted up on first installation pipe 4, first flexible groove 10 has been seted up in first connecting groove 9, be provided with first spring 11 in the first flexible groove 10, be connected with first push rod 12 on the first spring 11, install first sealed piece 13 on the first push rod 12, second connecting groove 14 has been seted up on the second installation pipe 7, be provided with the flexible groove 15 of second in the second connecting groove 14, be provided with second spring 16 in the flexible groove 15 of second, be connected with second push rod 17 on the second spring 16, install the sealed piece 18 of second on the second push rod 17, install second inner union 19 on the anti-blocking filter 6, install extension post 20 on the first inner union 5.
The air inlet connecting end 1 is connected with the air outlet connecting end 8 through the connecting rod 2, the axis of the connecting rod 2 coincides with the axis of the air inlet connecting end 1, the outer diameter of the air inlet connecting end 1 is larger than two times of the outer diameter of the air distributing pipe 3, and the air inlet connecting end 1 is connected with the air outlet connecting end 8 conveniently.
The length of the first inner pipe 5 is greater than the length of the second inner pipe 19, the outer diameter of the second inner pipe 19 is equal to the outer diameter of the first inner pipe 5, and the first inner pipe 5 is slidably connected with the anti-blocking filter 6, so that the anti-blocking filter 6 can be conveniently installed through the first inner pipe 5 and the second inner pipe 19.
The outer diameter of the anti-blocking filter 6 is equal to that of the first installation pipe 4, the outer diameter of the first installation pipe 4 is equal to that of the second installation pipe 7, and the anti-blocking filter 6 is fixedly connected with the second inner connecting pipe 19, so that the anti-blocking filter 6 drives the second inner connecting pipe 19 to move together.
The first sealing block 13 is of a telescopic structure in the first connecting groove 9 by the first spring 11, and the telescopic distance of the first sealing block 13 is greater than the length of the first inner nipple 5, and the length of the first connecting groove 9 is greater than the length of the second connecting groove 14, so that the first inner nipple 5 can be conveniently inserted into the first connecting groove 9.
The second sealing block 18 is of a telescopic structure in the second connecting groove 14 through the second spring 16, the telescopic distance of the second sealing block 18 is equal to half of the depth of the second connecting groove 14, and the length of the second sealing block 18 is greater than the outer diameter of the gas distributing pipe 3, so that the gas distributing pipe 3 can be conveniently closed through the second sealing block 18.
The working principle is as follows: when using this thermal power plant's denitration SCR ammonia pipeline anti-blocking device, at first remove the device to the place that needs to use, will admit air on link 1 and the link 8 that gives vent to anger is connected to the breather pipe respectively, make gaseous through admitting air link 1 enter into the gas-distributing pipe 3 in, one of them gas-distributing pipe 3 sends into gas to first installation pipe 4 in, the clearance through extension post 20 enters into first inner union pipe 5 in, then filters gas through anti-blocking filter 6, rethread second inner union pipe 19 enters into to the link 8 that gives vent to anger.
When the anti-blocking filter 6 needs to be replaced, the anti-blocking filter 6 can be pushed towards the first inner pipe 5, the anti-blocking filter 6 pushes the first sealing block 13 through the extension column 20 on the first inner pipe 5, the first sealing block 13 compresses the first spring 11 through the first push rod 12 to slide, the first inner pipe 5 is completely moved into the first connecting groove 9, simultaneously, the second inner connecting pipe 19 moves out of the second connecting groove 14, the second spring 16 pushes the second push rod 17 to slide, the second push rod 17 pushes the second sealing block 18 to slide to seal the second connecting groove 14, the anti-blocking filter 6 is pulled outwards, the anti-blocking filter 6 slides outwards on the first inner connecting pipe 5, the anti-blocking filter 6 is taken down, the first sealing block 13 seals the first connecting groove 9 in the same way, and those not described in detail in this specification are well within the skill of those in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a denitration SCR ammonia pipeline prevents stifled device of thermal power plant, includes admit air link (1), connecting rod (2), gas-distributing pipe (3), second inner connecting pipe (19) and extension post (20), its characterized in that: the air inlet connecting end (1) is provided with a connecting rod (2), the air inlet connecting end (1) is provided with an air distributing pipe (3), the air distributing pipe (3) is provided with a first mounting pipe (4), the first mounting pipe (4) is connected with a first inner connecting pipe (5), the first inner connecting pipe (5) is connected with an anti-blocking filter (6), the anti-blocking filter (6) is connected with a second mounting pipe (7), the second mounting pipe (7) is connected with an air outlet connecting end (8), the first mounting pipe (4) is provided with a first connecting groove (9), the first connecting groove (9) is internally provided with a first telescopic groove (10), the first telescopic groove (10) is internally provided with a first spring (11), the first spring (11) is connected with a first push rod (12), the first push rod (12) is provided with a first sealing block (13), the anti-blocking filter is characterized in that a second connecting groove (14) is formed in the second mounting pipe (7), a second telescopic groove (15) is formed in the second connecting groove (14), a second spring (16) is arranged in the second telescopic groove (15), a second push rod (17) is connected onto the second spring (16), a second sealing block (18) is mounted onto the second push rod (17), a second inner connecting pipe (19) is mounted onto the anti-blocking filter (6), and an extension column (20) is mounted onto the first inner connecting pipe (5).
2. The denitration SCR ammonia pipeline anti-blocking device of the thermal power plant as claimed in claim 1, characterized in that: the air inlet connecting end (1) is connected with the air outlet connecting end (8) through the connecting rod (2), the axis of the connecting rod (2) coincides with the axis of the air inlet connecting end (1), and the outer diameter of the air inlet connecting end (1) is larger than two times of the outer diameter of the air distribution pipe (3).
3. The denitration SCR ammonia pipeline anti-blocking device of the thermal power plant as claimed in claim 1, characterized in that: the length of the first inner connecting pipe (5) is larger than that of the second inner connecting pipe (19), the outer diameter of the second inner connecting pipe (19) is equal to that of the first inner connecting pipe (5), and the first inner connecting pipe (5) is in sliding connection with the anti-blocking filter (6).
4. The denitration SCR ammonia pipeline anti-blocking device of the thermal power plant as claimed in claim 1, characterized in that: the outer diameter of the anti-blocking filter (6) is equal to that of the first installation pipe (4), the outer diameter of the first installation pipe (4) is equal to that of the second installation pipe (7), and the anti-blocking filter (6) is fixedly connected with the second inner connecting pipe (19).
5. The denitration SCR ammonia pipeline anti-blocking device of the thermal power plant as claimed in claim 1, characterized in that: the first sealing block (13) is of a telescopic structure in the first connecting groove (9) through a first spring (11), the telescopic distance of the first sealing block (13) is greater than the length of the first inner connecting pipe (5), and the length of the first connecting groove (9) is greater than the length of the second connecting groove (14).
6. The denitration SCR ammonia pipeline anti-blocking device of the thermal power plant as claimed in claim 1, characterized in that: the second sealing block (18) is of a telescopic structure in the second connecting groove (14) through a second spring (16), the telescopic distance of the second sealing block (18) is equal to half of the depth of the second connecting groove (14), and the length of the second sealing block (18) is larger than the outer diameter of the gas distribution pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220614087.1U CN217139949U (en) | 2022-03-16 | 2022-03-16 | Denitration SCR ammonia pipeline of thermal power plant prevents stifled device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220614087.1U CN217139949U (en) | 2022-03-16 | 2022-03-16 | Denitration SCR ammonia pipeline of thermal power plant prevents stifled device |
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| Publication Number | Publication Date |
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| CN217139949U true CN217139949U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220614087.1U Active CN217139949U (en) | 2022-03-16 | 2022-03-16 | Denitration SCR ammonia pipeline of thermal power plant prevents stifled device |
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| CN (1) | CN217139949U (en) |
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- 2022-03-16 CN CN202220614087.1U patent/CN217139949U/en active Active
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