CN214040820U - Ammonia escape measurement system - Google Patents
Ammonia escape measurement system Download PDFInfo
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- CN214040820U CN214040820U CN202022790154.9U CN202022790154U CN214040820U CN 214040820 U CN214040820 U CN 214040820U CN 202022790154 U CN202022790154 U CN 202022790154U CN 214040820 U CN214040820 U CN 214040820U
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- outlet flue
- measurement system
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Abstract
The utility model relates to the technical field, concretely relates to ammonia escape measurement system. The ammonia escape measurement system is used for measuring ammonia escape in flue gas of a denitration outlet flue, and comprises an ammonia measurement instrument, a main pipe and a plurality of branch pipes which are communicated with the main pipe, wherein each branch pipe can extend into the denitration outlet flue; outlets of the branch pipes are arranged at intervals along the length direction of the denitration outlet flue, and the outlets of the branch pipes are positioned at different parts of the transverse section of the denitration outlet flue; one end of the main pipe is closed, the other end of the main pipe is communicated with an ammonia measuring instrument, and the ammonia measuring instrument is positioned at the downstream of each branch pipe. The sampling point has accomplished the full coverage of flue cross section, consequently can effectively eliminate the drawback of local sample among the prior art, and the measuring result can be closer to the ammonia escape condition of whole denitration export flue, and the measured value is more accurate.
Description
Technical Field
The utility model relates to a denitration export flue detects technical field, particularly, relates to an ammonia escape measurement system.
Background
In the prior art, when detecting the ammonia escape condition in the denitration outlet flue, the flue gas is generally sampled at a certain corner of the outlet flue of the air preheater, and then the adopted flue gas is detected, wherein the detection result represents the ammonia escape measurement result of the outlet flue. In the measurement mode, the sampling device is arranged at one corner of the outlet flue of the air preheater, and the measurement result adopted by the sampling device can only represent the ammonia escape condition at the corner actually and cannot explain the ammonia escape condition of the whole outlet flue, so that the ammonia escape condition of the whole outlet flue cannot be monitored.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ammonia escape measurement system to solve the technical problem that can not monitor the ammonia escape condition of whole export flue among the prior art.
The utility model provides an ammonia escape measurement system for measure ammonia escape in flue gas to denitration outlet flue, ammonia escape measurement system includes ammonia measuring apparatu, female pipe and a plurality of branch pipes that all are linked together with female pipe, each branch pipe all can stretch into to denitration outlet flue; outlets of the branch pipes are arranged at intervals along the length direction of the denitration outlet flue, and a plurality of outlets of the branch pipes are positioned at different parts of the transverse section of the denitration outlet flue; one end of the main pipe is closed, the other end of the main pipe is communicated with the ammonia measuring instrument, and the ammonia measuring instrument is positioned at the downstream of each branch pipe.
Furthermore, at least two branch pipes form a branch pipe group, and the branch pipe group is provided with a plurality of groups and is arranged at intervals along the length direction of the denitration outlet flue;
in the same branch pipe group, the outlet of each branch pipe can extend into different parts of the transverse section in the denitration outlet flue.
Furthermore, the branch pipe group is provided with three branch pipes, and the outlet of each branch pipe is positioned at different parts of the transverse section of the denitration outlet flue and is uniformly arranged at intervals along the length direction of the denitration outlet flue;
and/or the branch pipe is provided with a first stop valve.
Further, the main pipe is communicated with a first compressed air inlet pipe close to the sealed end portion of the main pipe.
Further, the ammonia measuring instrument comprises a measuring cylinder and a measuring probe, wherein the top end part and the bottom end part of the measuring cylinder are both in a cone structure; the measuring cylinder is communicated with the main pipe; at least one measuring probe is located externally alongside the measuring cylinder.
Furthermore, two measuring probes are arranged and are positioned at the outer side of the measuring cylinder; the two measuring probes are oppositely arranged, and the measuring cylinder and the measuring probes are arranged on the same platform.
Further, the measuring probe is communicated with a second compressed air inlet pipe, and the second compressed air inlet pipe is provided with a second stop valve.
Further, the downstream of the measuring cylinder is communicated to an outlet flue of the air preheater.
Further, a switch valve used for controlling the on-off of the downstream sampling airflow of the measuring cylinder is arranged between the measuring cylinder and an outlet flue of the air preheater.
Further, the switch valve is a manual butterfly valve.
The utility model provides an ammonia escape measurement system can produce following beneficial effect:
the utility model provides an among the ammonia escape measurement system, the branch pipe of female pipe and a plurality of intercommunication with it has been set up in this ammonia escape measurement system, because the length direction interval of the export denitration export flue of branch pipe sets up, and the export of a plurality of branch pipes is located the different positions of denitration export flue cross section, namely, the flue gas flow direction multiple spot sampling of denitration export flue not only can be followed to a plurality of branch pipes, can also sample the different positions of denitration export flue transverse section, the sampling point has accomplished the full coverage of flue cross section, consequently, the drawback of local sample among the prior art can effectively be eliminated, the measuring result can be close the ammonia escape condition of whole denitration export flue more, the measured value is more accurate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of an ammonia slip measurement system according to an embodiment of the present invention.
Description of reference numerals:
100-denitration outlet flue;
200-ammonia meter; 210-a measuring cylinder; 220-a measurement probe; 230-a second compressed intake pipe;
240-a second stop valve; 250-a switch valve;
300-a main pipe; 310 — a first compressed intake pipe;
400-branch pipe; 410-a first shut-off valve;
500-air preheater.
The direction of arrows in the figure indicates the flow direction of flue gas, used gas, or compressed air.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides an ammonia escape measurement system, which is used for measuring ammonia escape in flue gas of a denitration outlet flue 100, and comprises an ammonia measurement instrument 200, a main pipe 300 and a plurality of branch pipes 400 communicated with the main pipe 300, wherein each branch pipe 400 can extend into the denitration outlet flue 100; outlets of the branch pipes 400 are arranged at intervals along the length direction of the denitration outlet flue 100, and a plurality of outlets of the branch pipes 400 are positioned at different parts of the transverse section of the denitration outlet flue 100; the main pipe 300 is closed at one end and connected to the ammonia meter 200 at the other end, and the ammonia meter 200 is located downstream of each branch pipe 400.
Among the ammonia escape measurement system that this embodiment provided, main pipe 300 and a plurality of branch pipe 400 that communicate with it have been set up in this ammonia escape measurement system, because the length direction interval of the export denitration export flue 100 of branch pipe 400 sets up, and the export of a plurality of branch pipes 400 is located the different positions of denitration export flue 100 cross section, namely, a plurality of branch pipes 400 not only can be followed the sampling of denitration export flue 100's flue gas flow direction multiple spot, can also sample the different positions of denitration export flue 100 transverse section, flue cross section's full coverage has been accomplished to the sampling point, consequently, the drawback of local sample among the prior art can effectively be eliminated, the measuring result can be close the ammonia escape condition of whole denitration export flue more, the measured value is more accurate.
In this embodiment, as shown in fig. 1, at least two branch pipes 400 form a branch pipe group, and the branch pipe group has multiple groups and is arranged at intervals along the length direction of the denitration outlet flue 100; in the same branch pipe group, the outlet of each branch pipe 400 can extend to different positions of the transverse section in the denitration outlet flue 100. With such an arrangement, the branch pipes 400 can be assembled and disassembled, processed, maintained and the like, and batch and standardization can be easily realized.
In this embodiment, as shown in fig. 1, the branch pipe group has three branch pipes 400, and the outlets of the branch pipes 400 are located at different positions of the transverse cross section of the denitration outlet flue 100 and are uniformly spaced along the length direction of the denitration outlet flue 100. It should be noted that the transverse cross section may represent the same transverse cross section, or may represent projection planes of different transverse cross sections along the length direction of the denitration outlet flue, and when the outlets of the branch pipes 400 are located at different positions of the transverse cross section of the denitration outlet flue 100, the branch pipes 400 in the same group may perform multi-point sampling on the transverse cross section, and similarly, may perform multi-point sampling on the length direction of the denitration outlet flue 100.
In this embodiment, as shown in fig. 1, the branch pipe 400 is provided with a first shut-off valve 410. The first stop valve 410 can be set to open/close each corresponding branch pipe 400 according to actual conditions, so that the corresponding part can be selectively sampled easily, and the control is flexible.
In the present embodiment, as shown in fig. 1, the first compressed air inlet pipe 310 is communicated with the main pipe 300 near the sealed end thereof. The first compressed air inlet pipe 310 is configured to charge compressed air into the main pipe 300, so as to clear impurities in the main pipe 300 and the measuring cylinder 210, and facilitate subsequent accuracy of sampled gas. It should be noted that a valve (not shown) for controlling on/off of the first compressed air inlet pipe 310 may be provided, or of course, the valve may not be provided, and in this case, whether the first compressed air inlet pipe 310 supplies compressed air or not may be realized by controlling the operating state of the air compressor.
In this embodiment, as shown in fig. 1, the ammonia measuring instrument 200 includes a measuring cylinder 210 and a measuring probe 220, and both the top end portion and the bottom end portion of the measuring cylinder 210 are cone-shaped; the measuring cylinder 210 is communicated with the main pipe 300; at least one measuring probe 220 is located on the outer side of the measuring cylinder 210. The top end and the bottom end of the measuring cylinder 210 are both set to be cone structures, so that dust is not easy to accumulate on the top end and the bottom end.
In this embodiment, as shown in fig. 1, two measuring probes 220 are disposed, and both are located at the outer side of the measuring cylinder 210; the two measurement probes 220 are disposed opposite to each other, and the measurement cylinder 210 and the measurement probes 220 are mounted on the same platform. The two measuring probes 220 are arranged on the same platform and are oppositely arranged, namely, the distance between the two measuring probes 220 can be set to be very close, so that the measuring accuracy can be ensured, and the disassembly, assembly and maintenance can be completed without communication tools such as an interphone and the like when the equipment is disassembled, assembled and maintained, namely, the advantages of convenient communication when the equipment is disassembled, assembled and maintained are achieved, and the equipment is very convenient to carry; the light focusing and the dismounting can be quickly finished.
In this embodiment, as shown in fig. 1, the measuring probe 220 is communicated with a second compressed air inlet pipe 230, and the second compressed air inlet pipe 230 is provided with a second stop valve 240. The compressed air can be blown to the position of the measuring probe 220 through the second compressed air inlet pipe 230, so that the measuring probe 220 is periodically blown by the compressed air, the cleaning and measuring accuracy of the measuring probe 220 can be kept, and the service life of the measuring probe 220 can be ensured and even prolonged. The second cut-off valve 240 is provided to effectively open/close the second compressed air intake pipe 230.
In this embodiment, as shown in fig. 1, the downstream of the measuring cylinder 210 is connected to the outlet flue of the air preheater 500. So set up, can arrange the sampling gas who has measured to the export flue of air preheater 500 after, can carry out processing on next step to the flue gas, can directly not discharge into the external world to can not cause the pollution to the environment.
In this embodiment, as shown in fig. 1, an on-off valve 250 for controlling the flow/interruption of the sample gas downstream of the measuring cylinder 210 is disposed between the measuring cylinder 210 and the outlet flue 510 of the air preheater 500. The switching valve 250 is provided to effectively switch on/off the flow of the utility gas downstream of the measuring cylinder 210.
In this embodiment, as shown in fig. 1, the on-off valve 250 is a manual butterfly valve. So configured, the manual intervention operation of the switch valve 250 can be facilitated.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An ammonia escape measurement system is used for measuring ammonia escape in flue gas of a denitration outlet flue (100), and comprises an ammonia measuring instrument (200), a main pipe (300) and a plurality of branch pipes (400) communicated with the main pipe (300), wherein each branch pipe (400) can extend into the denitration outlet flue (100); outlets of the branch pipes (400) are arranged at intervals along the length direction of the denitration outlet flue (100), and a plurality of outlets of the branch pipes (400) are positioned at different parts of the transverse section of the denitration outlet flue (100); one end of the main pipe (300) is closed, the other end of the main pipe is communicated with the ammonia measuring instrument (200), and the ammonia measuring instrument (200) is positioned at the downstream of each branch pipe (400).
2. The ammonia escape measurement system of claim 1, wherein at least two of the branch pipes (400) constitute a branch pipe group, the branch pipe group having a plurality of groups and being arranged at intervals along a length direction of the denitration outlet flue (100);
in the same branch pipe group, the outlet of each branch pipe (400) can extend into different parts of the transverse section in the denitration outlet flue (100).
3. The ammonia escape measurement system of claim 2, wherein the branch pipe group is provided with three branch pipes (400), and the outlet of each branch pipe (400) is positioned at different positions of the transverse section of the denitration outlet flue (100) and is uniformly arranged at intervals along the length direction of the denitration outlet flue (100);
and/or the branch pipe (400) is provided with a first shut-off valve (410).
4. An ammonia slip measurement system as claimed in claim 3, wherein the parent pipe (300) is connected to a first compressed air inlet pipe (310) near its sealed end.
5. The ammonia slip measurement system of any of claims 1-4, wherein the ammonia meter (200) comprises a measuring cylinder (210) and a measuring probe (220), wherein the top end portion and the bottom end portion of the measuring cylinder (210) are both cone structures; the measuring cylinder (210) is communicated with the main pipe (300); at least one measuring probe (220) is located on the outer side of the measuring cylinder (210).
6. The ammonia slip measurement system of claim 5, wherein there are two measurement probes (220) and both are located outside and alongside the measuring cylinder (210); the two measuring probes (220) are oppositely arranged, and the measuring cylinder (210) and the measuring probes (220) are arranged on the same platform.
7. An ammonia escape measurement system as claimed in claim 6, wherein the measurement probe (220) is in communication with a second compressed air inlet pipe (230), the second compressed air inlet pipe (230) being provided with a second shut-off valve (240).
8. An ammonia slip measurement system as claimed in claim 7, wherein the measuring cylinder (210) is connected downstream to an outlet flue of an air preheater (500).
9. The ammonia slip measurement system of claim 8, wherein a switch valve (250) for controlling the on-off of the sampling gas flow downstream of the measuring cylinder (210) is arranged between the measuring cylinder (210) and the outlet flue (510) of the air preheater (500).
10. The ammonia slip measurement system of claim 9, wherein the on-off valve (250) is a manual butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022790154.9U CN214040820U (en) | 2020-11-27 | 2020-11-27 | Ammonia escape measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022790154.9U CN214040820U (en) | 2020-11-27 | 2020-11-27 | Ammonia escape measurement system |
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| Publication Number | Publication Date |
|---|---|
| CN214040820U true CN214040820U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022790154.9U Active CN214040820U (en) | 2020-11-27 | 2020-11-27 | Ammonia escape measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214040820U (en) |
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2020
- 2020-11-27 CN CN202022790154.9U patent/CN214040820U/en active Active
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