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CN-224231374-U - Sampling probe supporting structure

CN224231374UCN 224231374 UCN224231374 UCN 224231374UCN-224231374-U

Abstract

The utility model discloses a sampling probe supporting structure which comprises a sleeve supporting frame, a transfer pipe, a sleeve, a flange sleeve and a sampling probe, wherein the transfer pipe is vertically inserted into the side wall of a flue and penetrates into the flue, the sleeve is inserted into the flue through a pipeline of the transfer pipe, the sleeve is limited and fixed through the sleeve supporting frame arranged in the flue, the flange sleeve is hermetically inserted into a pipeline opening of the transfer pipe, which is far away from the flue, and a through and communicated mounting pore canal is arranged between the flange sleeve and the sleeve, a detection end of the sampling probe is inserted into the mounting pore canal from one end of the flange sleeve, which is far away from the flue, and penetrates into the detection end to penetrate out of the sleeve and be positioned in the flue, and the other end of the sampling probe is positioned at the end of the flange sleeve, which is far away from the flue, and is externally connected with detection equipment. The device can be directly arranged on the side wall of the flue in a sealing way by using the switching tube, dust is prevented from directly flushing the sampling probe tube by using the sleeve and the flange sleeve support, and the real-time detection of the flue is performed by using the external detection equipment of the sampling probe tube.

Inventors

  • CHEN JINGWEI
  • SHANG KUNMIN
  • YANG BINHAI
  • LI PEI
  • YANG FANHUA
  • FANG FEI
  • ZHANG CHEN
  • CHENG ZHIFENG
  • ZHANG YICHANG

Assignees

  • 江苏大唐国际吕四港发电有限责任公司

Dates

Publication Date
20260512
Application Date
20250530

Claims (10)

  1. 1. A sampling probe supporting structure is characterized by comprising a sleeve supporting frame (1-4), an adapter tube (1-1), a sleeve (1-3), a flange sleeve (1-2) and a sampling probe (1-5), wherein the adapter tube (1-1) is vertically inserted into the side wall of a flue (1-7) and penetrates into the flue (1-7), the sleeve (1-3) is inserted into the flue (1-7) through a pipeline of the adapter tube (1-1) and is limited and fixed through the sleeve supporting frame (1-4) arranged in the flue (1-7), the flange sleeve (1-2) is inserted and arranged at a pipeline opening of the adapter tube (1-1) far away from the flue (1-7), a through and communicated mounting pore canal is arranged between the flange sleeve (1-2) and the sleeve (1-3), a detection end of the sampling probe (1-5) is inserted into the mounting pore canal (1-7) from one end of the flange sleeve (1-2) far from the flue (1-7) and penetrates through the detection end (1-3) and is positioned in the flue (1-7), the other end of the sampling probe tube (1-5) is positioned at the end part of the flange sleeve (1-2) far away from the flue (1-7) and is externally connected with detection equipment.
  2. 2. A sampling probe supporting structure according to claim 1, wherein the sleeve supporting frame (1-4) comprises an upper supporting channel steel (2-1), a lower supporting channel steel (2-2) and a middle channel steel, the upper supporting channel steel (2-1) and the lower supporting channel steel (2-2) are arranged in parallel, the middle channel steel is vertically connected between the upper supporting channel steel (2-1) and the lower supporting channel steel (2-2), the upper supporting channel steel (2-1) is parallel to the sleeve (1-3) and is arranged in a flue (1-7), and the lower supporting channel steel (2-2) is used for being attached to and fixed on the side wall of the sleeve (1-3).
  3. 3. A sampling probe support structure according to claim 2, characterized in that the sleeve (1-3) is fixedly connected with the lower support channel steel (2-2) by at least two dislocated industrial hoops.
  4. 4. The sampling probe supporting structure according to claim 2, wherein the sleeve supporting frame (1-4) further comprises diagonal-bracing channel steel (2-3), the middle channel steel is vertically connected between the upper supporting channel steel (2-1) and the lower supporting channel steel (2-2) and located at the middle position, one diagonal-bracing channel steel (2-3) is respectively connected between two sides of the upper supporting channel steel (2-1) located at the middle channel steel and the middle channel steel, and one diagonal-bracing channel steel (2-3) is respectively connected between two sides of the lower supporting channel steel (2-2) located at the middle channel steel and the middle channel steel.
  5. 5. A sampling probe support structure according to claim 1, characterized in that a distance exists between the wall of the sleeve (1-3) inside the adapter tube (1-1) and the inner wall of the adapter tube (1-1).
  6. 6. A sampling probe support structure according to claim 1, characterized in that a distance exists between the end of the flange sleeve (1-2) inside the adapter tube (1-1) and the end of the sleeve (1-3).
  7. 7. A sampling probe supporting structure according to claim 1, characterized in that the flange sleeve (1-2) is arranged in the transfer tube (1-1) and has a space between the tube wall and the inner wall of the transfer tube (1-1), and the tube opening of the transfer tube (1-1) far from the flue (1-7) is in sealing connection with the tube wall of the flange sleeve (1-2).
  8. 8. The sampling probe supporting structure according to claim 7, wherein the pipe opening of the adapter pipe (1-1) far away from the flue (1-7) is in sealing connection with the pipe wall of the flange sleeve (1-2) by adopting a sealing ring.
  9. 9. The sampling probe supporting structure according to claim 1, wherein the sampling probe (1-5) comprises a detection tube (3-1) and a first flange (3-2), the detection tube (3-1) is arranged in the mounting pore canal, one end of the detection tube (3-1) is cut with an inclined opening and is used as the detection end, the inclined opening faces away from the air flow direction, the other end of the detection tube is arranged at one end, far away from the flue (1-7), of the flange sleeve (1-2) and is used for externally connecting detection equipment, the first flange (3-2) is sleeved outside the end, far away from the flue (1-7), of the flange sleeve (1-2) and is correspondingly provided with a second flange, and the detection tube (3-1) and the flange sleeve (1-2) are connected through the first flange (3-2).
  10. 10. A sampling probe support structure according to claim 9, further comprising a probe support ring (1-6), wherein the probe support ring (1-6) comprises a semi-arc-shaped upper probe support ring (4-1) and a semi-arc-shaped lower probe support ring (4-2), the mounting pore canal is a circular pore canal, the inner diameter of the mounting pore canal is larger than the outer diameter of the detection tube (3-1), and the upper probe support ring (4-1) and the lower probe support ring (4-2) are used for being symmetrically clamped between the detection tube (3-1) and the mounting pore canal and are positioned on the upper side and the lower side of the detection tube (3-1).

Description

Sampling probe supporting structure Technical Field The utility model relates to the technical field of structures for flue sampling, in particular to a sampling probe supporting structure. Background The denitration flue gas flow field of the thermal power plant is influenced by factors such as a flue structure, a catalyst and the like, the flow velocity and the component are unevenly distributed, most denitration single-point monitoring can only represent the concentration of nitrogen oxides at the point, and the distribution condition of the nitrogen oxides of the section of the whole flue cannot be accurately reflected. At present, most denitration reconstruction can carry out regional measurement, and the ammonia spraying amount of each region is controlled through the NOx content, so that the air preheater is prevented from being blocked by excessive ammonia escape, the effects of energy conservation and emission reduction are achieved, and win-win benefits of economic benefit and environmental benefit are realized. The partition measurement generally requires that sampling probe tubes are inserted from two sides of the denitration flue, so that the representativeness of the measuring points can be guaranteed, the length of the probe tubes can be controlled, and the problems that the probe tubes are overlong, easy to break and inconvenient to maintain are avoided. However, the problem of later multi-point sampling in the design stage of the denitration system may not be fully considered in part of the power plants, and only a platform is laid on one side of the flue, so that sampling probe tubes cannot be inserted from two sides of the flue, and only flue measurement is carried out through one side, so that the measurement accuracy cannot be guaranteed. If the platform is additionally arranged at the later stage, steel structure supports and channels are additionally added, so that the construction cost is obviously increased. Therefore, a need exists for a sampling probe supporting structure to solve the problem that the measurement accuracy cannot be guaranteed because the sampling probe can only be inserted from one side of the flue in the partial denitration flue partition measurement. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides a sampling probe supporting structure to solve the problem that the measurement accuracy cannot be ensured because the sampling probe can only be inserted from one side for the regional measurement of partial denitration flue. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a sampling probe supporting structure, includes sleeve pipe support frame, adapter tube, sleeve pipe, flange sleeve and sampling probe, the adapter tube inserts perpendicularly and establishes at the lateral wall of flue to run through to the inside of flue, the sleeve pipe inserts the inside of flue through the pipeline of adapter tube, and carries out spacing fixedly through the sleeve pipe support frame that sets up in the flue, the flange sleeve seals to insert and establishes the pipeline mouth department that keeps away from the flue at the adapter tube, and is equipped with the installation pore that runs through and communicate between flange sleeve and the sleeve pipe, the detection end of sampling probe inserts from the one end that the flange sleeve kept away from the flue to the installation pore is worn out the sleeve pipe and is located inside the flue to the detection end, and the other end of sampling probe is located the flange sleeve and keeps away from the tip and external check out equipment of flue. In order to optimize the technical scheme, the specific measures adopted further comprise: Further, the sleeve support frame comprises an upper support channel steel, a lower support channel steel and a middle channel steel, wherein the upper support channel steel and the lower support channel steel are arranged in parallel, the middle channel steel is vertically connected between the upper support channel steel and the lower support channel steel, the upper support channel steel is parallel to the sleeve and is arranged in the flue, and the lower support channel steel is used for being attached to and fixed to the side wall of the sleeve. Further, the sleeve and the lower support channel steel are fixedly connected by adopting at least two dislocated industrial clamps. Further, the sleeve support frame further comprises diagonal bracing channel steel, the middle channel steel is vertically connected between the upper support channel steel and the lower support channel steel and located in the middle position, diagonal bracing channel steel is respectively connected between two sides of the upper support channel steel located in the middle channel steel and the middle channel steel, and diagonal bracing channel steel is respectively connected between two s