CN204710609U - A kind of denitration spray gun sleeve pipe and denitration spray gun - Google Patents
A kind of denitration spray gun sleeve pipe and denitration spray gun Download PDFInfo
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- CN204710609U CN204710609U CN201520362699.6U CN201520362699U CN204710609U CN 204710609 U CN204710609 U CN 204710609U CN 201520362699 U CN201520362699 U CN 201520362699U CN 204710609 U CN204710609 U CN 204710609U
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- spray gun
- denitration spray
- link
- tube
- sleeve pipe
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Abstract
The utility model embodiment discloses a kind of denitration spray gun sleeve pipe, comprises casing pipe, and wherein said casing pipe comprises nitrogen link carborundum tube, and described nitrogen link carborundum tube is provided with hollow cavity, and described hollow cavity is even cavity.Material for the manufacture of nitrogen link carborundum tube is nitrogen link carborundum, this material has very high intensity, such as 900 degrees centigrade in hot environment, still there is very strong wearability and corrosion resistance, dust in working environment and quartz sand particle are difficult to wear and tear to described nitrogen link carborundum tube, and moisture in working environment and chemical substance are difficult to link carborundum tube generation corrosion reaction with described nitrogen or cause embrittlement, thus ensure that described denitration spray gun sleeve pipe has very high durability; Described denitration spray gun casing pipe sleeve is connected to denitration spray gun, thus protects described denitration spray gun, extends the service life of described denitration spray gun.
Description
Technical field
The utility model relates to denitration device technical field, particularly relates to a kind of denitration spray gun sleeve pipe, and has the denitration spray gun of above-mentioned denitration spray gun sleeve pipe.
Background technology
Denitration spray gun is SNCR (Selective Non-Catalytic Reduction, SNCR) key equipment in denitrating technique, be widely used in the denitrating technique of cement plant, the steam power plant using CFBB and garbage burning factory etc.The selection that denitration spray gun is installed for temperature requires high especially, use urea liquid, denitration spray gun is positioned at the position that temperature is 950 ± 50 DEG C as far as possible; What use ammonia spirit is positioned at denitration spray gun the position that temperature is 900 ± 50 DEG C as far as possible.For circulating fluidized bed boiler, the installation site that denitration spray gun is commonly used is: on the horizontal flue in the middle of boiler furnace upper outlet, furnace outlet and cyclone separator and cyclone separator top is near porch; For cement kiln, denitration spray gun is generally arranged on the predecomposition furnace top of cement kiln, avoids flame place and the shower nozzle part of denitration spray gun to stretch in stove 100 millimeters.
Because denitration spray gun often works in hot environment, existing denitration spray gun generally adopts 310 stainless steel pipes to be made, the good non-oxidizability of 310 stainless steel tool and corrosion resistance.
But 310 stainless steel material hardness are lower, when temperature reaches 900 ± 50 DEG C, 310 stainless steel materials are in red heat state and hardness can reduce further.And the flue gas flow rate of the horizontal flue of circulationization pool furnace thorax and cyclone cylinder centre is all at about 28m/s, a large amount of dust and quartz sand particle is mingled with in flue gas, directly stretch into furnace interior to denitration spray gun to divide and carry out erosive wear, and then easily cause the wear damage of shower nozzle, shorten the service life of denitration spray gun.
Utility model content
The utility model embodiments provides a kind of denitration spray gun sleeve pipe, to solve the problem of denitration spray gun poor durability of the prior art.
In order to solve the problems of the technologies described above, the utility model embodiment discloses following technical scheme:
The utility model embodiment discloses a kind of denitration spray gun sleeve pipe, comprises casing pipe, wherein:
Described casing pipe comprises nitrogen link carborundum tube, and described nitrogen link carborundum tube is provided with hollow cavity, and described hollow cavity is even cavity.
Preferably, the described hollow cavity of described nitrogen link carborundum tube is cylindrical, hollow cavity.
Preferably, one end of described nitrogen link carborundum tube is also provided with connected unit, and described connected unit is socketed on denitration spray gun; Described connected unit is cylindrical hollow configuration; The external diameter of described connected unit is equal with the external diameter that described nitrogen links carborundum tube; The bottom surface that end face and the described nitrogen of described connected unit link carborundum tube contacts and fixing; The axis that axis and the described nitrogen of described connected unit link carborundum tube overlaps.
Preferably, the internal diameter of described connected unit is greater than the internal diameter of described nitrogen link carborundum tube.
Preferably, the inwall of described connected unit is provided with the screw thread be socketed that to match with denitration spray gun.
Preferably, the length of described nitrogen link carborundum tube is 110-220mm.
Preferably, the external diameter of described nitrogen link carborundum tube is 34-50mm, and the pipe thickness of described nitrogen link carborundum tube is 6-12mm.
Preferably, described casing pipe also comprises stainless steel tube; Described stainless steel tube is wrapped in described nitrogen link carborundum tube; The inwall that outer wall and the described nitrogen of described stainless steel tube link carborundum tube contacts; The hollow structure that the inwall of described stainless steel tube is surrounded as is the inner chamber of described casing pipe.
Preferably, the length of described stainless steel tube equals the length of described nitrogen link carborundum tube.
The utility model embodiment discloses a kind of denitration spray gun, and comprise arbitrary described denitration spray gun sleeve pipe, described denitration spray gun casing pipe sleeve is located on the nozzle of described denitration spray gun.
From above technical scheme, a kind of denitration spray gun sleeve pipe that the utility model embodiment provides, comprises casing pipe, and wherein said casing pipe comprises nitrogen link carborundum tube, described nitrogen link carborundum tube is provided with hollow cavity, and described hollow cavity is even cavity.Because the nitrogen link carbofrax material of described nitrogen link carborundum tube itself has very high hardness, be difficult at high operating temperatures be worn and torn by the dust in working environment and quartz sand particle; And nitrogen link carborundum excellent corrosion resistance, the very difficult corrosion such as the moisture in working environment, chemical substance described nitrogen link carborundum tube, thus ensure that described denitration spray gun sleeve pipe has very high durability.Described denitration spray gun sleeve pipe is installed on described denitration spray gun, and described denitration spray gun sleeve pipe is protected described denitration spray gun, prevents dust and quartz sand particle to the wearing and tearing of described denitration spray gun, thus extends the service life of described denitration spray gun.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of denitration spray gun sleeve pipe that Fig. 1 provides for the utility model embodiment;
The structural representation of the another kind of denitration spray gun sleeve pipe that Fig. 2 provides for the utility model embodiment;
The structural representation of a kind of denitration spray gun that Fig. 3 provides for the utility model embodiment;
The symbol of Fig. 1-3 is expressed as:
1-nitrogen link carborundum tube, 2-connected unit, 3-stainless steel tube, 4-rifle body, 5-outer tube, pipe in 6-, 7-nozzle.
Detailed description of the invention
Technical scheme in the utility model is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
Embodiment one
See Fig. 1, be the structural representation of a kind of denitration spray gun sleeve pipe that the utility model embodiment provides, comprise casing pipe, described casing pipe comprises nitrogen link carborundum tube 1 and connected unit 2.
Wherein, described nitrogen link carborundum tube 1 is provided with hollow cavity, and described hollow cavity is even cavity.Described even cavity can be understood as, and the consistent and axis of described axial cross section of the shape and size of the diverse location place axial cross section of described even cavity overlaps.Described hollow cavity is cylindrical, hollow cavity in the present embodiment, and the nozzle (7) of denitration spray gun can be positioned over described hollow cavity inside, and certainly, described hollow cavity can be that other shapes are as cuboid.Described nitrogen link carborundum tube 1 uses nitrogen to link carborundum and is made; Nitrogen link carborundum is the carbofrax material prepared in nitrogen environment, and nitrogen link carborundum has very high intensity, and as 900 DEG C in hot environment, nitrogen link carborundum still has very high wearability and corrosion resistance.Described nitrogen link carborundum tube 1 is in high-temperature work environment, be difficult to be worn and torn by dust and quartz particles, and moisture in air and chemical substance is also difficult to and described nitrogen link carborundum tube 1 is had an effect, avoid described nitrogen to link carborundum tube 1 and corrosion or embrittlement occur, make described denitration spray gun sleeve pipe have very high durability.
And the pipe thickness of described nitrogen link carborundum tube 1 is 6-12mm, and this thickness range is preferable range certainly, the pipe thickness of described nitrogen link carborundum tube 1 can be arbitrary value.Because the pipe thickness of described nitrogen link carborundum tube 1 is thicker, the dust in working environment and quartz particles need by worn out for described nitrogen link carborundum tube 1, thus to extend the service life of described denitration spray gun sleeve pipe with the longer time.
In addition, the shower nozzle due to denitration spray gun stretches into about 100 millimeter of hot operation district part, and the length of described nitrogen link carborundum tube 1 can be set to 110-220mm.In order to mate with described denitration spray gun, the external diameter of described nitrogen link carborundum tube 1 is 34-50mm.Certainly, the length of described nitrogen link carborundum tube 1 and external diameter can be arbitrary value.
For the ease of the connection of described casing pipe and denitration spray gun, one end of described nitrogen link carborundum tube 1 is also provided with connected unit 2, and described connected unit 2 and described nitrogen link carborundum tube 1 and is made in integrated mode.Described connected unit 2 is cylindrical hollow configuration, the external diameter of described connected unit 2 is equal with the external diameter that described nitrogen links carborundum tube 1, the bottom surface that end face and the described nitrogen of described connected unit 2 link carborundum tube 1 contacts and fixing, and the axis that axis and the described nitrogen of described connected unit 2 link carborundum tube 1 overlaps.Preferably, the internal diameter of described connected unit 2 is greater than the internal diameter of described nitrogen link carborundum tube 1, is connected in denitration spray gun, certainly to facilitate, the internal diameter of described connected unit 2 can adjust according to the structure of concrete denitration spray gun, also can be less than or equal to the internal diameter of described nitrogen link carborundum tube 1.Described connected unit 2 is socketed on described denitration spray gun, and multiple screw means can be used to be fixed on described denitration spray gun; The inwall of described connected unit 2 can also be provided with the screw thread matched with denitration spray gun, the mode screwed by screw thread is fixed on described denitration spray gun, certainly, according to the concrete structure of described denitration spray gun, described connected unit 2 can arrange the external screw thread, internal thread or the internal and external threads that match with described denitration spray gun.
Embodiment two
The structural representation of the another kind of denitration spray gun sleeve pipe that Fig. 2 provides for the utility model embodiment, the difference of the present embodiment and above-described embodiment is, denitration spray gun sleeve pipe in the present embodiment adds stainless steel tube 3, is specially and comprises nitrogen link carborundum tube 1, connected unit 2 and stainless steel tube 3; Wherein said nitrogen link carborundum tube 1 and described connected unit 2 form with integrated mode manufacture; Described connected unit 2 is cylindrical hollow configuration, the bottom surface that end face and the described nitrogen of described connected unit 2 link carborundum tube 1 contacts, the external diameter of described connected unit 2 is equal with the external diameter that described nitrogen links carborundum tube 1, and the axis that axis and the described nitrogen of described connected unit 2 link carborundum tube 1 overlaps; Described stainless steel tube 3 is socketed in described nitrogen link carborundum tube 1, the inwall that outer wall and the described nitrogen of described stainless steel tube 3 link carborundum tube 1 contacts, the hollow structure that described stainless steel tube 3 is surrounded as is the inner chamber of described casing pipe, and the length of described stainless steel tube 3 equals the length of described nitrogen link carborundum tube 1.The thickness of described stainless steel tube 3 can be selected according to the structure of described denitration spray gun, can be placed in described denitration spray gun sleeve pipe to make the nozzle of described denitration spray gun (7) part.The present embodiment part same as the previously described embodiments referring to above-described embodiment, can not repeat them here.
Owing to adding described stainless steel tube 3, further increase the pipe thickness of described denitration spray gun sleeve pipe, the dust in working environment and quartz sand particle are difficult to worn out for described denitration spray gun sleeve pipe, thus improve the durability of described denitration spray gun sleeve pipe further.
Embodiment three
The structural representation of a kind of denitration spray gun that Fig. 3 provides for the utility model embodiment, comprises denitration spray gun body and denitration spray gun sleeve pipe; Wherein, described denitration spray gun body also comprises nozzle 7, interior pipe 6, outer tube 5 and rifle body 4.Described interior pipe 6 is arranged in the inner chamber of described outer tube 5, leave space, and described interior pipe 6 and described outer tube 5 is all socketed on described rifle body 4 between the outer wall of described interior pipe 6 and the inwall of described outer tube 5; The length of described interior pipe 6 is greater than the length of described outer tube 5; One end away from described rifle body 4 of described interior pipe 6 is provided with nozzle 7.
In order to protect the nozzle 7 of described denitration spray gun, described denitration spray gun body is provided with denitration spray gun sleeve pipe; The difference of the denitration spray gun sleeve pipe in described denitration spray gun sleeve pipe and embodiment one is, the internal diameter of the connected unit 2 of described denitration spray gun sleeve pipe is less than the internal diameter of described nitrogen link carborundum sleeve pipe 1, and described denitration spray gun sleeve pipe and embodiment one same section do not repeat them here.Described connected unit 2 matches with the interior pipe 6 of described denitration spray gun, and described connected unit 2 is socketed with on described interior pipe 6, and in all or part of cavity be deeply surrounded as by described interior pipe 6 and described outer tube 5 of the tube wall of described connected unit 2.On described outer tube 5, with the relevant position of described connected unit 2, multiple connector can be set, screw is through described connector, with the outer wall close contact of described connected unit 2, described connected unit 2 is fixed on described interior pipe 6, thus realizes the connection of described denitration spray gun sleeve pipe and denitration spray gun body.Certainly, described denitration spray gun sleeve pipe and described denitration spray gun body also can use other modes to be connected, as described in denitration spray gun body is arranged buckle by as described in buckle connect; Described connected unit 2 is also connected by screw thread with described denitration spray gun body, as as described in the inwall of connected unit 2 also can be provided with screw thread, and the outer wall of described interior pipe 6 is provided with the screw thread matched with the screw thread of described connected unit 2, the mode screwed by screw thread is connected; Described connected unit 2 both can be connected on described interior pipe 6 and also can be connected on described outer tube 5, or the inwall of described connected unit 2 and outer wall are respectively at the described outer wall of interior pipe 6 and the inwall close contact of described outer tube 5.The inwall of described nitrogen link carborundum tube 1 wraps up the nozzle 7 of described denitration spray gun; the end face of the one end away from connected unit 2 and the end face of described nozzle 7 of described nitrogen link carborundum tube 1 are positioned at same plane, to make described nozzle 7 and to need the described interior pipe 6 stretching into working region to be all in the protection domain of described denitration spray gun sleeve pipe.Because described denitration spray gun sleeve pipe itself has very high intensity, wear resistence and corrosion resistance, and in hot environment, meet water also can not embrittlement, described denitration spray gun sleeve pipe has very high durability; By described denitration spray gun sleeve pipe socket with on described denitration spray gun body; described denitration spray gun sleeve pipe can protect nozzle 7 part of described denitration spray gun and corresponding interior pipe 6 well; prevent the dust in working environment and quartz sand particle to the erosion of described denitration spray gun, extend the service life of described denitration spray gun.
Certainly, described denitration spray gun can comprise the denitration spray gun sleeve pipe that embodiment two provides, and the denitration spray gun sleeve pipe that embodiment two provides is identical with the connected mode that connected mode and the present embodiment of denitration spray gun body describe, and does not repeat them here.
The above is only detailed description of the invention of the present utility model, those skilled in the art is understood or realizes the utility model.To be apparent to one skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a denitration spray gun sleeve pipe, is characterized in that, comprises casing pipe, wherein:
Described casing pipe comprises nitrogen link carborundum tube (1), and described nitrogen link carborundum tube (1) is provided with hollow cavity, and described hollow cavity is even cavity.
2. denitration spray gun sleeve pipe according to claim 1, is characterized in that, the described hollow cavity of described nitrogen link carborundum tube (1) is cylindrical, hollow cavity.
3. denitration spray gun sleeve pipe according to claim 1 and 2, is characterized in that, one end of described nitrogen link carborundum tube (1) is also provided with connected unit (2), and described connected unit (2) is socketed on denitration spray gun; Described connected unit (2) is cylindrical hollow configuration; The external diameter that external diameter and the described nitrogen of described connected unit (2) link carborundum tube (1) is equal; The bottom surface that end face and the described nitrogen of described connected unit (2) link carborundum tube (1) contacts and fixing; The axis that axis and the described nitrogen of described connected unit (2) link carborundum tube (1) overlaps.
4. denitration spray gun sleeve pipe according to claim 3, is characterized in that, the internal diameter of described connected unit (2) is greater than the internal diameter of described nitrogen link carborundum tube (1).
5. denitration spray gun sleeve pipe according to claim 3, is characterized in that, the inwall of described connected unit (2) is provided with the screw thread be socketed that to match with denitration spray gun.
6. denitration spray gun sleeve pipe according to claim 1, is characterized in that, the length of described nitrogen link carborundum tube (1) is 110-220mm.
7. denitration spray gun sleeve pipe according to claim 1, is characterized in that, the external diameter of described nitrogen link carborundum tube (1) is 34-50mm, and the pipe thickness of described nitrogen link carborundum tube (1) is 6-12mm.
8. denitration spray gun sleeve pipe according to claim 1, is characterized in that, described casing pipe also comprises stainless steel tube (3); Described stainless steel tube (3) is wrapped in described nitrogen link carborundum tube (1); The inwall that outer wall and the described nitrogen of described stainless steel tube (3) link carborundum tube (1) contacts; The hollow structure that the inwall of described stainless steel tube (3) is surrounded as is the inner chamber of described casing pipe.
9. denitration spray gun sleeve pipe according to claim 8, is characterized in that, the length of described stainless steel tube (3) equals the length of described nitrogen link carborundum tube (1).
10. a denitration spray gun, is characterized in that, comprise as arbitrary in claim 1 to 9 as described in denitration spray gun sleeve pipe, described denitration spray gun casing pipe sleeve is located on the nozzle (7) of described denitration spray gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362699.6U CN204710609U (en) | 2015-05-29 | 2015-05-29 | A kind of denitration spray gun sleeve pipe and denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362699.6U CN204710609U (en) | 2015-05-29 | 2015-05-29 | A kind of denitration spray gun sleeve pipe and denitration spray gun |
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| Publication Number | Publication Date |
|---|---|
| CN204710609U true CN204710609U (en) | 2015-10-21 |
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|---|---|---|---|
| CN201520362699.6U Expired - Fee Related CN204710609U (en) | 2015-05-29 | 2015-05-29 | A kind of denitration spray gun sleeve pipe and denitration spray gun |
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| Country | Link |
|---|---|
| CN (1) | CN204710609U (en) |
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2015
- 2015-05-29 CN CN201520362699.6U patent/CN204710609U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20210529 |