CN110695941A - Wide flue SCR denitration test instrument set case - Google Patents

Wide flue SCR denitration test instrument set case Download PDF

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CN110695941A
CN110695941A CN201910894903.1A CN201910894903A CN110695941A CN 110695941 A CN110695941 A CN 110695941A CN 201910894903 A CN201910894903 A CN 201910894903A CN 110695941 A CN110695941 A CN 110695941A
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tube
pitot
sampling
sampling tube
test instrument
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CN110695941B (en
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肖育军
王春卉
肖聪
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
    • B25H3/02—Boxes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
    • G01P5/16—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid using Pitot tubes, e.g. Machmeter
    • G01P5/165—Arrangements or constructions of Pitot tubes

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a wide flue SCR denitration test instrument set box, which comprises: a tool box, NH being placed in the tool box3A sampling device, a bendable and straightened sampling tube and a bendable and straightened pitot tube; the sampling tube rigid sleeve is used for sleeving a sampling tube and is formed by sequentially splicing a plurality of sections of sampling tube sleeves; the pitot tube rigid sleeve is used for sleeving a pitot tube and is formed by sequentially splicing a plurality of pitot tube sleeves. The sampling tube and the pitot tube can be placed in a tool box in a bent state, so that the problem that the long sampling tube and the pitot tube are inconvenient to carry in the past is solved; the sampling tube rigid sleeve and the pitot tube rigid sleeve can be spliced into different lengths to meet the requirements of different monitoring depths, so that the SCR flue monitoring section can be subjected to all-area monitoringThe grid distribution monitoring and sampling are carried out, so that the measured data are more accurate and comprehensive.

Description

Wide flue SCR denitration test instrument set case
Technical Field
The invention relates to the technical field of flue gas sampling and testing, in particular to a wide-flue SCR denitration testing instrument set box.
Background
The capacity of a single machine of a coal-fired unit is continuously increased, and the structure of boiler flue gas treatment equipment is also continuously increased, for example, the depth of an inlet flue test section of a single SCR reactor device of a 600MW and 1000MW tower type boiler unit is 6-8 m; the outlet flue has larger difference according to the position difference of the test section, if the outlet flue is arranged at the lower layer of the catalyst, the depth of the outlet flue is more than 10m, and if the outlet flue is arranged on the inlet flue of the air preheater, the depth of the outlet flue is about 5.5-7.0 m. The depth of the inlet flue test section of the double SCR reactor device of the 600MW boiler unit is about 3.5 m; the outlet flue has larger position inequality difference according to the test section, if the outlet flue is arranged at the lower layer of the catalyst, the depth of the outlet flue is more than 8m, and if the outlet flue is arranged on the inlet flue of the air preheater, the depth of the outlet flue is about 4.0 m. Even if the single or double SCR reactor device of the small boiler unit for cogeneration is used, the depth of the test section of the outlet flue is 3.5-5.0 m.
The boiler tail flue is connected out from the coal economizer, is subjected to 90-degree corner and transverse inclined expansion, and is mixed with the ammonia injection grid on the vertical flue, and the velocity distribution of the flue gas in the region is non-uniform distribution under most conditions, so as to realize NH3With NOXThe ammonia spraying amount of the ammonia spraying branch pipe needs to be equal to the flow rate of the smoke and NO in the area of the ammonia spraying branch pipeXThe concentrations were consistent. Meanwhile, the nitrogen oxide is less than or equal to 50mg/m at the ultra-low emission3And NH3The escape rate is less than or equal to 3ppm and the like, and the NH is added3With NOXThe mixing uniformity of the coal mine injection system has higher requirements, namely the reasonability of the distribution of the ammonia injection amount of the region needs to be confirmed and accurately adjusted under the conditions of different coal qualities, different loads and different combustion, and NO on the outlet monitoring section is detectedXConcentration and slip NH3The concentration distribution is subjected to gridding measurement of the whole section, and NO in partial area in the outlet flue is eliminatedXExcessive concentration, partial region NH3The escape rate is high.
When performance testing and ammonia injection distribution adjustment are performed on these devices, pitot tubes and sampling guns often have insufficient length. Resulting in failure to match the flue gas flow rate and NO over the entire inlet cross sectionXThe concentration distribution is subjected to gridding measurement, and other areas can be inferred only on the basis of the partial area to be tested; NO on the outlet cross sectionXConcentration and escapeNH3The concentration distribution uniformity is subjected to gridding measurement, and NO on the whole test section can be measured only on the basis of a test partial area by combining with the monitoring value of an online CEMS systemXConcentration and slip NH3The concentration uniformity was estimated. With the coming of the regeneration time of the SCR system catalyst, in order to confirm and evaluate the activity of the regional catalyst in the SCR device, NO above and below each layer of catalyst module in the reactor device is neededXIn the case of concentration measurement, the distance in the depth direction on the test cross section is longer, and the purpose of the concentration measurement cannot be achieved by a common sampling gun.
Determination of NO in flue gas in performance test and ammonia injection adjustment test of current denitration systemXThe concentration is mostly measured by adopting a flue gas analyzer to extract flue gas from a flue through a pipeline, because the flue gas temperature in a denitration area is high, a sampling gun is not required to be heated, a common seamless steel pipe is generally adopted as a sampling pipe extending into the flue, but because of the contradiction among the diameter, the length and the rigidity of the seamless steel pipe, the requirement of the width and the length of the extending flue cannot be met in the testing process. When the sampling pipe is rigidly handled, its length is subject to transport difficulties. When the extension treatment is performed by the multi-stage connection method, special attention needs to be paid to the sealing property of the pipe and the heat resistance of the connection pipe. Outlet region NH3The same problem is faced with escaping concentration sampling, while NH3Escaping concentration sampling also faces the problems of sample device fixation and sample preservation. NO in inlet flue of SCR reactorXThe measurement of the concentration profile and the flue gas flow velocity profile suffers from the same problems as described above.
At present, lack a test equipment that is used for surveing SCR denitrification facility performance specially, satisfying on the test cross-section all regional sample and survey, be convenient for under the prerequisite of transportation and carrying, can not only be applicable to the electric academy of charge that the test was done to the specialty, can also be adapted to the power plant monitoring personnel to the self-test of SCR device, realize the test promptly, the intensification of sampling device, the simplification of its operation, to different circumstances and demand, can realize the special pertinence design and the combination of equipping.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the wide-flue SCR denitration testing instrument set box which can meet the requirements of extending into different flue widths and lengths and realize the full-area grid distribution monitoring and sampling of the SCR flue monitoring section.
The technical scheme adopted by the invention is as follows: the utility model provides a wide flue SCR denitration test instrument collection case, includes:
a tool box, NH being placed in the tool box3A sampling device, a bendable and straightened sampling tube and a bendable and straightened pitot tube;
the sampling tube rigid sleeve is used for sleeving a sampling tube and is formed by sequentially splicing a plurality of sections of sampling tube sleeves;
the pitot tube rigid sleeve is used for sleeving a pitot tube and is formed by sequentially splicing a plurality of pitot tube sleeves.
Further optimize, it is fixed through first fixed connection device suit between sampling tube rigidity sleeve pipe and the sampling tube, first fixed connection device includes sample adapter sleeve and sample buckle pipe, the intraductal sample draw-in groove that is equipped with of sample buckle pipe, be equipped with the sample fixture block that matches with sample draw-in groove on the pipe wall of sampling tube, sample buckle pipe box dress is on the sampling tube, and sample draw-in groove clamps fixedly with the sample fixture block, through sample adapter sleeve fixed connection between sample buckle pipe and the sampling tube rigidity sleeve pipe.
Further optimize, it is fixed through second fixed connection device suit between pitot tube rigid sleeve and the pitot tube, second fixed connection device includes pitot adapter sleeve and pitot buckle pipe, the intraductal pitot draw-in groove that is equipped with of pitot buckle pipe, be equipped with the pitot fixture block that matches with the pitot draw-in groove on the pipe wall of pitot tube, pitot buckle pipe box dress is on the pitot tube, and the pitot draw-in groove clamps with the pitot fixture block and fixes, pass through pitot adapter sleeve fixed connection between pitot buckle pipe and the pitot tube rigid sleeve.
Further optimize, be equipped with the sampling tube in the toolbox and settle the loop and pitot tube and settle the loop, the incasement bottom of toolbox is equipped with three parallel arrangement's cyclic annular baffle, the sampling tube is settled the loop and set up by two liang of the surrounding settings of three cyclic annular baffles and form with pitot tube, the both ends that the loop was settled to the sampling tube and pitot tube were the circular arc section, and the centre is straight section.
Further preferably, a baffle notch is arranged on the annular baffle between the sampling tube arranging loop and the pitot tube arranging loop, and the baffle notch is arranged on the straight sections on two sides.
Further optimization, the NH3The sampling device comprises two parallel NH3An absorption pipeline and a plurality of absorption bottles, wherein each absorption bottle is provided with NH3The absorption pipelines are respectively communicated with the corresponding absorption bottles.
Further optimization, the NH3The sampling device comprises two parallel NH3An absorption pipeline and a plurality of absorption bottles, two NH3The absorption pipelines are respectively communicated with the corresponding absorption bottles.
Further preferably, the bottom in the tool box is provided with a high-density sponge cushion for protecting the testing instrument.
Further preferably, a placing hole site for fixing and storing the absorption bottle is arranged on the high-density sponge cushion at the bottom of the tool box.
Further optimizing, the bottom of toolbox is equipped with the multiunit walking wheel.
The invention has the beneficial effects that:
(1) the long sampling tube and the pitot tube are respectively placed in a sampling tube placing loop and a pitot tube placing loop of the tool box through bending states, so that the problem that the long sampling tube and the pitot tube are inconvenient to carry is solved;
(2) during testing, the sampling tube is straightened and then inserted into the rigid sampling tube sleeve, so that the sampling tube is prevented from being bent due to insufficient strength in the testing process, the rigid sampling tube sleeve can be assembled into different lengths by a plurality of sections of sampling tube sleeves, and the detection and sampling requirements of different depth areas are met; in the same way, the pitot tube is inserted into the pitot tube rigid sleeve, so that the requirement for testing the smoke gas wind speed at different depths is met, and the whole-area grid distribution monitoring and sampling of the SCR flue monitoring section are realized.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a structural layout diagram of a wide flue SCR denitration test instrument collection box according to an embodiment of the invention;
FIG. 2 is a schematic view of a sampling tube according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a Pitot tube configuration of an embodiment of the present invention;
FIG. 4 is a schematic view of the connection of a coupon to a coupon rigid sleeve according to an embodiment of the present invention;
FIG. 5 is a schematic view of the connection of the Pitot tube to the Pitot tube rigid sleeve of an embodiment of the present invention;
FIG. 6 shows NH in accordance with an embodiment of the present invention3Structural layout of sampling device.
Detailed Description
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1 to 5, the wide flue SCR denitration test instrument set box includes:
a tool box 100, NH is placed in the tool box 1003 A sampling device 300 and a flexible straightened sampling tube 400 and a flexible straightened pitot tube 500;
the sampling tube rigid sleeve 600 is used for sleeving the sampling tube 400, and the sampling tube rigid sleeve 600 is formed by sequentially splicing a plurality of sections of sampling tube sleeves 610;
the pitot tube rigid sleeve 700 is used for sleeving the pitot tube 500, and the pitot tube rigid sleeve 700 is formed by sequentially splicing a plurality of pitot tube sleeves 710.
Before testing, all the equipment, instruments and accessories are stored in the tool box 100, and the equipment is transported and carried in a manner that a person carries the tool box 100. The long sampling tube 400 and the pitot tube 500 are respectively placed in the tool box 100 through a bending state, so that the problem that the long sampling tube 400 and the pitot tube 500 are inconvenient to carry is solved. The sampling tube 400 and the pitot tube 500 can be made of flexible materials, such as rubber tubes, silicone tubes and the like, so that the requirements of bending and straightening can be met.
After the sampling tube 400 or the Pitot tube 500 in a bending state is straightened on a test site, the sampling tube 400 or the Pitot tube 500 is respectively inserted into the sampling tube rigid sleeve 600 and the Pitot tube rigid sleeve 700, and therefore the problem that the sampling tube 400 or the Pitot tube 500 is easy to bend during testing due to insufficient strength is solved.
The sampling tube rigid sleeve 600 can be assembled into different lengths by a plurality of sections of sampling tube sleeves 610, and can meet the detection and sampling requirements of different depth areas. Similarly, the pitot tube rigid sleeve 700 can be assembled from multiple pitot tube sleeves 710 in different lengths to meet the flue gas velocity measurement requirements of different depth regions. And then realize carrying out the net of whole region and laying a little monitoring and sample to SCR flue monitoring cross-section for the data that record are more accurate comprehensive.
As shown in fig. 4, the sampling tube rigid sleeve 600 and the sampling tube 400 are sleeved and fixed by a first fixed connection device, the first fixed connection device includes a sampling connection sleeve 810 and a sampling fastening tube 820, a sampling clamping groove 821 is arranged in the sampling fastening tube 820, a sampling clamping block 410 matched with the sampling clamping groove 821 is arranged on the tube wall of the sampling tube 400, the sampling fastening tube 820 is sleeved on the sampling tube 400, the sampling clamping groove 821 is clamped and fixed with the sampling clamping block 410, and the sampling fastening tube 820 and the sampling tube rigid sleeve 600 are fixedly connected by the sampling connection sleeve 810.
The sampling tube rigid sleeve 600 is fixed with the sampling tube 400 through the first fixing and connecting device in a sleeved mode, so that the sampling tube 400 is prevented from moving in the sampling tube rigid sleeve 600, and the direction of the sampling tube 400 can be conveniently determined. Meanwhile, the sampling tube rigid sleeve 600 and the sampling tube 400 can be prevented from being unstably sleeved, so that the sampling tube rigid sleeve 600 falls into a flue pipe in the test.
Specifically, the sampling latch tube 820 is first fitted over the sampling tube 400 and is fixed to the sampling latch 410 via the sampling latch groove 821. The sampling connecting sleeve 810 is screwed and fixed at both ends thereof with the sampling buckle tube 820 and the sampling tube rigid sleeve 600, respectively, so that the sampling tube rigid sleeve 600 is fixedly connected with the sampling tube 400.
The sampling buckle pipe 820 and the sampling pipe rigid sleeve 600 are fixedly connected through the connecting sleeve 810 without selecting threaded connection or soft rubber pipe connection, so that the defects of air leakage and no high temperature resistance of the sampling pipe 400 and the pitot tube 500 in the test process are avoided.
As shown in fig. 5, the pitot tube rigid sleeve 700 and the pitot tube 500 are fixedly sleeved by a second fixed connection device, the second fixed connection device comprises a pitot connection sleeve 910 and a pitot buckle tube 920, a pitot clamping groove 921 is arranged in the pitot buckle tube 920, a pitot clamping block 510 matched with the pitot clamping groove 921 is arranged on the tube wall of the pitot tube 500, the pitot buckle tube 920 is sleeved on the pitot tube 500, the pitot clamping groove 921 is fixedly clamped with the pitot clamping block 510, and the pitot buckle tube 920 is fixedly connected with the pitot tube rigid sleeve 700 by the pitot connection sleeve 910.
Similarly, the pitot tube rigid sleeve 700 and the pitot tube 500 are fixed in a sleeved manner by a second fixing and connecting device, so that the movement of the pitot tube 500 in the pitot tube rigid sleeve 700 is avoided, and the direction of the pitot tube 500 is convenient to determine. Meanwhile, the phenomenon that the rigid pitot tube 700 and the pitot tube 500 are not stably sleeved can be prevented, so that the rigid pitot tube 700 falls into a flue pipe during testing.
Preferably, as shown in fig. 1, a sampling tube placing loop 110 and a pitot tube placing loop 120 are arranged in the tool box 100, three parallel annular partition plates 130 are arranged at the bottom of the tool box 100, the sampling tube placing loop 110 and the pitot tube placing loop 120 are formed by surrounding three annular partition plates 130 two by two, two ends of the sampling tube placing loop 110 and the pitot tube placing loop 120 are arc sections, and the middle is a straight section.
The sampling tube placing loop 110 and the pitot tube placing loop 120 are surrounded by three annular partition plates 130 in pairs, and the sampling tube 400 and the pitot tube 500 are respectively placed in the sampling tube placing loop 110 and the pitot tube placing loop 120, so that instruments and equipment in a tool box are tidy and not disordered.
It is further preferred that a baffle gap 131 is provided in the annular baffle 130 between the coupon placement ring 110 and the pitot tube placement ring 120, the baffle gap 131 being provided in the flat sections on both sides. The septum indentation 131 is designed to facilitate access to the coupon 400 and the pitot tube 500.
As shown in FIG. 6, NH3The sampling device 300 comprises two parallel lines of NH3An absorption pipeline and a plurality of absorption bottles 320 and NH of two3The absorption pipes are respectively communicated with the corresponding absorption bottles 320.
During testing, the front end of the pipeline is extended to a set area on a monitoring section, and the flue parameters are measured by connecting an instrument with the sampling tube 30 or the pitot tube 31;
NH3before sampling, the absorption solution was transferred into the absorption flask 320 by a syringe in a laboratory, and all the absorption flasks 320 were sealed with NH3The sampling device 300 is transported to the sampling site, and the sampling tube 400 and NH are connected to the sampling site during sampling3The absorption pipelines are connected.
After the first sampling is completed, the absorption bottle 320 is replaced and sampling is performed again. The sampled absorption bottle 320 is hermetically stored. After sampling, NH is added3The sampling device 300 is brought back to the laboratory for sample removal and analysis, as well as cleaning of the absorption flask 320 and removal of the absorption liquid.
Further, NH3The absorption pipeline comprises a drying bottle 311, a rotameter 312 and a suction pump 313 which are sequentially communicated, the suction pump 313 is connected with a rechargeable power supply 314, and the absorption bottle 320 is communicated with the drying bottle 311.
When the flue gas passes through the drying bottle 311, the moisture in the flue gas is removed, and the accuracy of data analysis is ensured. NH (NH)3The sampling device 300 adopts the rechargeable power supply 314 as a power supply, so as to provide power supply for outdoor work.
During sampling, before the sampling tube 400 is connected, the air pump 313 is started, and the left and right NH is adjusted by the rotor flow meter 312 and the adjusting valve on the air connecting tube3The air suction amount of the absorption pipeline is stable, and then the sampling pipe 400 is connected.
The bottom of the interior of the tool box 100 is provided with a high density foam pad 140 for protecting the test instruments. By arranging the high-density foam pad 140 and dividing the tool box 100 into various instrument storage areas through the high-density foam pad 140, various instruments and equipment in the tool box 100 are tidy and not disordered, and better protection is provided for the equipment.
The high-density sponge pad 140 at the bottom of the tool box 100 is provided with a placement hole for fixing and storing the absorption bottle 320. When the absorption bottles 320 are placed in the tool box 100, the absorption bottles 320 are fixedly stored in the placing holes on the high-density sponge mat 140, so that the absorption bottles 320 are better protected and prevented from being damaged in the transportation process.
Furthermore, because the tool box 100 has a plurality of equipment and instruments and is large in size and weight, a plurality of groups of traveling wheels 150 are arranged at the bottom of the tool box 100 for facilitating the transportation of the collection box.
The high-density sponge pad 140 is also provided with a smoke analyzer zone 101, an electronic micro-pressure meter zone 103 and other corresponding zones for placing corresponding corollary equipment. The intervals between every two intervals are arranged, and a sufficient safety distance is kept.
Aiming at professional test teams, the invention can completely prepare the sampling tubes 400 and the pitot tubes 500 with different lengths, and prepare the longest rigid sampling tube sleeve 600 and the longest rigid pitot tube sleeve 700 so as to deal with the flue with monitoring sections with different widths on site; a sampling gun and a pitot tube with proper lengths and a sleeve tube with proper lengths can be prepared according to the width of a flue monitoring section by a specific operation team, so that the cost is reduced, and the management of the sampling gun, the pitot tube and the sleeve tube is simplified.
The present invention is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (10)

1. The utility model provides a wide flue SCR denitration test instrument collection case which characterized in that includes:
a tool box (100), NH is placed in the tool box (100)3A sampling device (300) and a flexible straightened sampling tube (400) and a flexible straightened pitot tube (500);
the sampling tube rigid sleeve (600) is used for sleeving the sampling tube (400), and the sampling tube rigid sleeve (600) is formed by sequentially splicing a plurality of sections of sampling tube sleeves (610);
the pitot tube rigid sleeve (700) is used for sleeving a pitot tube (500), and the pitot tube rigid sleeve (700) is formed by sequentially splicing a plurality of pitot tube sleeves (710).
2. The wide-flue SCR denitration test instrument set box of claim 1, characterized in that: it is fixed through first fixed connection device suit between sampling tube rigid sleeve pipe (600) and sampling tube (400), first fixed connection device includes sample adapter sleeve (810) and sample buckle pipe (820), the intraductal sample draw-in groove (821) that is equipped with of sample buckle pipe (820), be equipped with on the pipe wall of sampling tube (400) with sample draw-in groove (821) matched sample fixture block (410), sample buckle pipe (820) suit is on sampling tube (400), and clamps fixedly through sample draw-in groove (821) and sample fixture block (410), pass through sample adapter sleeve (810) fixed connection between sample buckle pipe (820) and sampling tube rigid sleeve pipe (600).
3. The wide-flue SCR denitration test instrument set box of claim 1, characterized in that: the Pitot tube clamping device is characterized in that the Pitot tube rigid sleeve (700) and the Pitot tube (500) are fixedly sleeved through a second fixed connecting device, the second fixed connecting device comprises a Pitot connecting sleeve (910) and a Pitot buckle tube (920), a Pitot clamping groove (921) is formed in the tube of the Pitot buckle tube (920), a Pitot clamping block (510) matched with the Pitot clamping groove (921) is arranged on the tube wall of the Pitot tube (500), the Pitot clamping tube (920) is sleeved on the Pitot tube (500) and clamped and fixed with the Pitot clamping block (510) through the Pitot clamping groove (921), and the Pitot clamping tube (920) and the Pitot tube rigid sleeve (700) are fixedly connected through the Pitot connecting sleeve (910).
4. The wide-flue SCR denitration test instrument set box according to any one of claims 1 to 3, characterized in that: be equipped with in toolbox (100) that the sampling tube settled loop (110) and pitot tube settled loop (120), the incasement bottom of toolbox (100) is equipped with three parallel arrangement's cyclic annular baffle (130), the sampling tube is settled loop (110) and pitot tube and is settled loop (120) and enclose two liang of settings by three cyclic annular baffle (130) and form, the both ends that loop (110) and pitot tube were settled loop (120) are the circular arc section to the sampling tube, and the centre is straight section.
5. The wide-flue SCR denitration test instrument set box of claim 4, wherein: and a baffle notch (131) is arranged on the annular baffle (130) between the sampling tube arranging loop (110) and the pitot tube arranging loop (120), and the baffle notch (131) is arranged on the straight sections at two sides.
6. The wide-flue SCR denitration test instrument set box according to any one of claims 1 to 3, characterized in that: the NH3The sampling device (300) comprises two parallel NH3An absorption pipeline and a plurality of absorption bottles (320), the NH3The absorption pipelines are respectively communicated with the corresponding absorption bottles (320).
7. The wide-flue SCR denitration test instrument set box of claim 6, wherein: the NH3The absorption pipeline comprises a drying bottle (311), a rotor flow meter (312) and an air suction pump (313) which are sequentially communicated, the air suction pump (313) is connected with a rechargeable power supply (314), and the absorption bottle (320) is communicated with the drying bottle (311).
8. The wide-flue SCR denitration test instrument set box of claim 7, characterized in that: the bottom in the tool box (100) is provided with a high-density sponge cushion (140) for protecting a test instrument.
9. The wide-flue SCR denitration test instrument set box of claim 8, wherein: the high-density sponge cushion (140) at the bottom of the tool box (100) is provided with a placing hole for fixing and storing the absorption bottle (320).
10. The wide-flue SCR denitration test instrument set box according to any one of claims 1 to 3, characterized in that: the bottom of the tool box (100) is provided with a plurality of groups of travelling wheels (150).
CN201910894903.1A 2019-09-20 2019-09-20 Wide flue SCR denitration test instrument set case Active CN110695941B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113340677A (en) * 2021-06-11 2021-09-03 中国能源建设集团华中电力试验研究院有限公司 Sampling device and test method thereof

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