CN211740778U - Heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of thermal power plant - Google Patents
Heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of thermal power plant Download PDFInfo
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- CN211740778U CN211740778U CN202020446292.2U CN202020446292U CN211740778U CN 211740778 U CN211740778 U CN 211740778U CN 202020446292 U CN202020446292 U CN 202020446292U CN 211740778 U CN211740778 U CN 211740778U
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Abstract
The utility model provides a high wet flue gas exhaust low concentration particulate matter companion of thermal power plant samples rifle that heats, include: back formula pitot tube, sampling nozzle, sampling pipe, sleeve pipe body of a gun, be connected with insulating high temperature resistant direction handle's section of thick bamboo chamber, be connected with insulating high temperature resistant handle's handle body of a gun sleeve pipe, heating control system, automatic smoke and dust appearance and air compressor machine, back formula pitot tube and sampling pipe cross-under in sleeve pipe body of a gun and section of thick bamboo intracavity, the one end that the sampling nozzle is located the sleeve pipe body of a gun is connected with the sampling pipe, the other end in sleeve pipe body of a gun is connected in the section of thick bamboo chamber, and sleeve pipe slidable ground is cup jointed in the sleeve pipe body of a gun to the handle body of a gun sleeve pipe, automatic smoke and dust appearance is connected with the air compressor machine through tee bend and. Has the advantages that: the low-concentration particulate matter heat tracing sampling gun is integrally and intensively designed, firm and convenient to operate.
Description
Technical Field
The invention belongs to the technical field of thermal power plant particulate matter sampling, and particularly relates to a low-concentration particulate matter heat tracing sampling gun for low-temperature high-humidity flue gas exhaust of a thermal power plant.
Background
At present, when the low-concentration particulate sampling gun is used for sampling low-concentration particulate matters at the positions of a desulfurization outlet, an inlet of a wet electric precipitator, an outlet of the wet electric precipitator and a total discharge port of a thermal power plant, the sampling work of the low-concentration particulate matters can not be carried out for a long time and continuously under the conditions of large flue gas humidity and low temperature or in saturated wet flue gas, and the application range is greatly limited.
On-the-spot operating personnel need with the direct contact of sampling rifle body when operating traditional low concentration particulate matter companion's heat sampling rifle, easily receive static to on-the-spot operating personnel's interference in the flue gas, have on-the-spot operating personnel to be scalded by high temperature and the risk of being disturbed by static. Due to the restriction of the structure of the traditional sampling gun, a field operator cannot adjust the posture and direction of holding the low-concentration particulate matter sampling gun at any time according to the actual field test conditions and the field test mode and method, and the field operator needs to wear thick high-temperature-resistant asbestos gloves, so that the operation flexibility of field technicians is reduced, and further, the field test work efficiency and the field test safety and operability are reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a heat tracing sampling gun for low-concentration particulate matters discharged by low-temperature high-humidity flue gas of a thermal power plant, and particularly realizes the following technical scheme:
high wet flue gas exhaust low concentration particulate matter of thermal power plant accompanies heat sampling rifle includes: back formula pitot tube, sampling nozzle, sampling pipe, sleeve pipe body of a gun, be connected with insulating high temperature resistant direction handle's section of thick bamboo chamber, be connected with insulating high temperature resistant handle's handle body of a gun sleeve pipe, heating control system, automatic smoke and dust appearance and air compressor machine, back formula pitot tube and sampling pipe cross-under in sleeve pipe body of a gun and section of thick bamboo intracavity, the one end that the sampling nozzle is located the sleeve pipe body of a gun is connected with the sampling pipe, the other end in sleeve pipe body of a gun is connected in the section of thick bamboo chamber, and sleeve pipe slidable ground is cup jointed in the sleeve pipe body of a gun to the handle body of a gun sleeve pipe, automatic smoke and dust appearance is connected with the air compressor machine through tee bend and.
The further design of the low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun of the thermal power plant is characterized in that the cylinder cavity comprises a collecting filter cylinder, a box cover, a hinge, a net support, a lock nut and two connecting clamping sleeves, the box cover is hinged to the shell of the cylinder cavity through the hinge, the lock nut is arranged on the box cover, and the collecting filter cylinder is detachably arranged in the net support and connected with the sampling pipe through the two connecting clamping sleeves.
The heat tracing sampling gun for the low-concentration particulate matters exhausted by the low-temperature high-humidity flue gas of the thermal power plant is further designed in that the net support is a porous filter cylinder hole type net support arranged at the bottom, and the net support is made of high-temperature-resistant polytetrafluoroethylene; the material of the filter cylinder is quartz or polytetrafluoroethylene.
The heat tracing sampling gun for the low-concentration particulate matters exhausted by the low-temperature high-humidity flue gas of the thermal power plant is further designed in that a screwing nut is screwed on the collecting filter cylinder.
The heat tracing sampling gun for the low-concentration particulate matters exhausted by the low-temperature high-humidity flue gas of the thermal power plant is further designed in that a high-temperature-resistant and corrosion-resistant O-shaped sealing ring is arranged in the screwing nut.
The further design of the low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun of the thermal power plant is that the two ends of the gun body of the sleeve are respectively welded with a block for supporting the backrest type pitot tube and the sampling tube.
The heat tracing sampling gun for the low-concentration particulate matters exhausted by the low-temperature high-humidity flue gas of the thermal power plant is further designed in that the sampling nozzle is provided with a winding bent pipe with a downward opening.
The further design of the low-concentration particulate matter heat tracing sampling gun for low-temperature high-humidity flue gas exhaust of the thermal power plant is that the backrest type pitot tube comprises: a static pressure pipe and a dynamic pressure pipe; the automatic smoke dust instrument is correspondingly connected with the tee joints of the sampling pipe, the static pressure pipe and the dynamic pressure pipe through the sampling extension pipe, the static pressure extension pipe and the dynamic pressure extension pipe respectively, and each tee joint is provided with a valve.
The further design of the low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun of the thermal power plant is that a locking nut used for axially and radially positioning on a sleeve gun body is further arranged on the sleeve of the handle gun body.
The heat tracing sampling gun for the low-concentration particulate matters exhausted by the low-temperature high-humidity flue gas of the thermal power plant is further designed in that heat insulation layers are arranged on the outer sides of the sleeve gun body and the back-rest type pitot tube in the cylinder cavity; and a heating belt is wound on the sampling pipe.
The invention has the following advantages:
the utility model discloses a low concentration particulate matter sampling rifle carries out whole intensification design with standard type S type back formula pitot tube, sampling mouth, sampling pipe, sleeve pipe body of a gun, collection device section of thick bamboo chamber, heat preservation, insulating high temperature resistant direction handle, wound form heating band and heating control system etc. and is firm, easy and simple to handle.
The utility model discloses a handle body sleeve pipe and insulating high temperature resistant handle that low concentration particulate matter sampling rifle had add, avoided the direct contact of on-the-spot operating personnel with the low concentration particulate matter sampling rifle body of high temperature, eliminated the static that probably exists in the flue gas and to the interference of on-the-spot operating personnel, the risk that makes on-the-spot operating personnel scald by high temperature and disturbed by static reduces by a wide margin, on-the-spot operating personnel only need wear ordinary high temperature resistant work gloves, the flexibility of field technician operation has been strengthened, the efficiency of field test work has been improved, the security and the maneuverability of field test have been improved simultaneously; the design of the handle gun body sleeve, the insulating high-temperature-resistant handle and the handle gun body sleeve locking nut enables field operators to adjust the posture and direction of holding the low-concentration particulate matter sampling gun and the field test mode and method at any time according to actual field test conditions, improves the operation flexibility of field technicians, reduces field test time and improves working efficiency.
Drawings
Fig. 1 is the utility model discloses a high humid tropical flue gas exhaust low concentration particulate matter of thermal power plant accompanies heat sampling gun's schematic structure.
Fig. 2 is an enlarged schematic view at the cartridge chamber.
Fig. 3 is an enlarged schematic view at the sampling nozzle.
Detailed Description
The technical solution of the present invention is further explained with reference to the specific embodiments and the accompanying drawings.
As shown in fig. 1, the low-concentration particulate matter heat tracing sampling gun for low-temperature high-humidity flue gas exhaust of the thermal power plant mainly comprises a backrest type pitot tube 8, a sampling nozzle 71, a sampling pipe 7, a sleeve gun body 1, a cylinder cavity 2 connected with an insulating high-temperature-resistant direction handle 21, a handle gun body sleeve 3 connected with an insulating high-temperature-resistant handle 31, a heating control system 5, an automatic smoke dust instrument 6 and an air compressor 4. The back-rest type pitot tube 8 and the sampling tube 7 are connected in the sleeve gun body 1 and the barrel cavity 2 in a penetrating way. The sampling nozzle 71 is connected to the sampling tube 7 at one end of the cannula barrel 1.
The barrel cavity 2 is connected to the other end of the cannula barrel 1. The rear-mounted design is adopted in the cylinder cavity 2, the interference of low-temperature and high-humidity environment and other impurities in smoke gas to the sampling filter cylinder in the collecting device when the sampling device is arranged in front is avoided, and the effectiveness and accuracy of a test result are greatly improved. The rear-mounted design of the cylinder cavity 2 enables field technicians to directly replace the filter cylinders in the collecting device after the previous sample collection work is finished and the low-concentration particulate matter sampling gun is not pulled out of the flue, so that the field test time is greatly saved, and the working efficiency is improved. On the other hand, the cylinder cavity 2 adopts a wide-diameter design, so that favorable space conditions are provided for the filter cylinder replacement work of field technicians, and the field test time is saved.
Further, the outer sides of the back-rest type pitot tube in the sleeve gun body 1 and the cylinder cavity 2 are provided with heat insulation layers; the sampling pipe is wound with a heating belt. The design that the thickness of a heating belt and a heat-insulating layer is doubled is cancelled in the collecting cylinder cavity 2, and on the premise that the effective heat insulation of the collecting device is guaranteed, the risk that field technicians get an electric shock and are scalded when the filter cylinders are installed and taken is avoided. The design of the winding type heating belt and the heating control system not only ensures the uniformity of the standard S-shaped back-rest type pitot tube and the sampling tube in heating, effectively avoids the condensation of water in low-temperature wet flue gas in the standard S-shaped back-rest type pitot tube and the sampling tube, protects subsequent instrument equipment (3012-D large-flow automatic smoke dust tester), reduces the fault rate of the instrument equipment field test, prolongs the service life of the instrument equipment, simultaneously effectively avoids the interference of a large amount of water in the low-temperature wet flue gas on the flue gas flow rate measurement in the sampling process, ensures that a filter cylinder in a collecting device is in a relatively dry state, greatly reduces the probability of damage of the filter cylinder in the collecting device due to moisture absorption and the waste of a sample, greatly saves the time of the field overall test, improves the working efficiency and effectively ensures the accuracy of a test result.
The handle gun body sleeve 3 is slidably sleeved on the sleeve gun body 1. The handle frame sleeve 3 is also provided with a locking nut 32 for axial and radial positioning on the sleeve frame 1. The automatic smoke dust instrument 6 and the air compressor 4 are respectively connected with the sampling pipe 7 and the backrest type pitot tube 8 through a tee joint. The heating control system communicates with the cartridge chamber through a temperature control, heater wire 51. The automatic smoke dust tester of this embodiment adopts 3012-D automatic smoke dust tester. The external design of heating system has alleviateed the dead weight of low concentration particulate matter sampling rifle, the field technician's of being convenient for operation. The design of the handle gun body sleeve and the insulating high-temperature-resistant handle avoids the direct contact between a field operator and a high-temperature low-concentration particulate sampling gun body, eliminates the interference of static electricity possibly existing in the sampling gun body and flue gas on the field operator, greatly reduces the risk of the field operator being scalded by high temperature and being interfered by the static electricity, only needs to wear common high-temperature-resistant working gloves by the field operator, does not need to wear thick high-temperature-resistant asbestos gloves, enhances the operation flexibility of the field technician, improves the working efficiency of a field test, and simultaneously improves the safety and operability of the field test; the design of the handle gun body sleeve, the insulating high-temperature-resistant handle and the handle gun body sleeve locking nut enables field operators to adjust the posture and direction of holding the low-concentration particulate matter sampling gun and the field test mode and method at any time according to actual field test conditions, improves the operation flexibility of field technicians, reduces field test time and improves working efficiency. The insulating high temperature resistant direction handle of the sampling rifle of this embodiment and the material of insulating high temperature resistant handle select for use acid-resistant, corrosion-resistant, 120 degrees centigrade high temperature resistant silica gel.
As shown in fig. 2, the chamber 2 is mainly composed of a collection cartridge 28, a box cover 23, a hinge 26, a net support 27, a lock nut 231 and two connecting ferrules 25. The lid 23 is hinged to the housing of the chamber 2 by means of a hinge 26. The locking nut 231 is screwed to the lid 23. The detachable collection filter cartridge 28 is arranged in the net support 27 and is connected with the sampling tube 7 through the two connecting clamp sleeves 25, so that the air tightness of the sampling tube is ensured, meanwhile, field technicians can conveniently and effectively mount and dismount the collection device rapidly, and the field working efficiency is improved.
The net support 27 is a filter cartridge hole net support 27 with a porous shape at the bottom, and in this embodiment, the material of the net support 27 is high temperature resistant polytetrafluoroethylene. The collection cartridge 28 of this embodiment is made of quartz or ptfe.
A screwing nut 29 is screwed on the collection filter cylinder 28. A high-temperature resistant and corrosion resistant O-shaped sealing ring is arranged in the screwing nut 29.
The two ends of the sleeve body 1 are respectively welded with a block 11 for preventing the handle body sleeve 3 from sliding down.
The sampling nozzle 72 is a downwardly opening serpentine tube, see fig. 3.
The back-rest type pitot tube 8 is composed of a static pressure tube 81 and a dynamic pressure tube 82. The automatic smoke detector is correspondingly connected with a tee joint of the sampling pipe 7, the static pressure pipe 81 and the dynamic pressure pipe 82 through a sampling extension pipe 61, a static pressure extension pipe 62 and a dynamic pressure extension pipe 63. Each tee joint is provided with a corresponding valve. In the embodiment, the back-blowing gas which can be directly introduced into the air compressor is additionally arranged on the tee joint on the dynamic pressure pipe and the static pressure pipe which are made of stainless steel, the dynamic pressure pipe, the static pressure pipe and the sampling pipe of the low-concentration particulate sampling gun can be swept at any time, the on-line sweeping of the sampling pipe can be directly performed on line (the low-concentration particulate sampling gun is still in a working state in a flue measuring hole) when the test is suspended, the dynamic pressure pipe and the static pressure pipe of the low-concentration particulate sampling gun can be swept (the on-line sweeping of the sampling pipe can be performed after the previous sample is collected), the problem that the time is wasted because the low-concentration particulate sampling gun can be swept after being taken out of the flue measuring hole when the conventional sampling gun is swept is. The 316L stainless steel valve is additionally arranged on the extension pipe of the dynamic pressure pipe, the static pressure pipe and the sampling pipe, so that the interference on the pressure sensor of the 3012-D automatic smoke dust tester when the dynamic pressure pipe, the static pressure pipe and the sampling pipe of the low-concentration particulate matter sampling gun are swept is avoided, and the service life of the instrument is prolonged.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a high wet flue gas exhaust low concentration particulate matter of low temperature of thermal power plant accompanies heat sampling rifle which characterized in that includes: back formula pitot tube, sampling nozzle, sampling pipe, sleeve pipe body of a gun, be connected with insulating high temperature resistant direction handle's section of thick bamboo chamber, be connected with insulating high temperature resistant handle's handle body of a gun sleeve pipe, heating control system, automatic smoke and dust appearance and air compressor machine, back formula pitot tube and sampling pipe cross-under in sleeve pipe body of a gun and section of thick bamboo intracavity, the one end that the sampling nozzle is located the sleeve pipe body of a gun is connected with the sampling pipe, the other end in sleeve pipe body of a gun is connected in the section of thick bamboo chamber, and sleeve pipe slidable ground is cup jointed in the sleeve pipe body of a gun to the handle body of a gun sleeve pipe, automatic smoke and dust appearance is connected with the air compressor machine through tee bend and.
2. The thermal power plant low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun as claimed in claim 1, wherein the cylinder chamber comprises a collection filter cylinder, a box cover, a hinge, a net support, a lock nut and two connecting clamping sleeves, the box cover is hinged to a shell of the cylinder chamber through the hinge, the lock nut is arranged on the box cover, and the collection filter cylinder is detachably arranged in the net support and is connected with the sampling pipe through the two connecting clamping sleeves.
3. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant as claimed in claim 2, wherein the net support is a filter cylinder hole type net support with a porous shape arranged at the bottom, and the net support is made of high-temperature-resistant polytetrafluoroethylene; the material of the filter cylinder is quartz or polytetrafluoroethylene.
4. The thermal power plant low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun as claimed in claim 2, wherein a screwing nut is screwed on the collection filter cylinder.
5. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant according to claim 4, wherein a high-temperature-resistant and corrosion-resistant O-shaped sealing ring is arranged in the screwing nut.
6. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant as claimed in claim 1, wherein two ends of the gun body of the sleeve are respectively welded with a block for preventing the sleeve of the handle gun body from sliding out of the gun body of the sleeve.
7. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant as claimed in claim 1, wherein the sampling nozzle is provided with a downward opening in a winding bent pipe.
8. The thermal power plant low-temperature high-humidity flue gas exhaust low-concentration particulate matter heat tracing sampling gun according to claim 1, wherein the back-to-back type pitot tube comprises: a static pressure pipe and a dynamic pressure pipe; the automatic smoke dust instrument is correspondingly connected with the tee joints of the sampling pipe, the static pressure pipe and the dynamic pressure pipe through the sampling extension pipe, the static pressure extension pipe and the dynamic pressure extension pipe respectively, and each tee joint is provided with a valve.
9. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant according to claim 1, wherein a locking nut for axially and radially positioning on a gun body of the sleeve is further arranged on the gun body sleeve of the handle.
10. The heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of a thermal power plant according to claim 1, wherein an insulating layer is arranged on the outer sides of the sleeve gun body and the back-rest type pitot tube in the cylinder cavity; and a heating belt is wound on the sampling pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020446292.2U CN211740778U (en) | 2020-03-31 | 2020-03-31 | Heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020446292.2U CN211740778U (en) | 2020-03-31 | 2020-03-31 | Heat tracing sampling gun for low-temperature high-humidity flue gas exhaust low-concentration particulate matters of thermal power plant |
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| CN211740778U true CN211740778U (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636735A (en) * | 2021-11-10 | 2022-06-17 | 国能南京电力试验研究有限公司 | High wet flue gas humidity survey of ultralow emission of thermal power plant surveys rifle |
-
2020
- 2020-03-31 CN CN202020446292.2U patent/CN211740778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636735A (en) * | 2021-11-10 | 2022-06-17 | 国能南京电力试验研究有限公司 | High wet flue gas humidity survey of ultralow emission of thermal power plant surveys rifle |
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| CP01 | Change in the name or title of a patent holder |
Address after: 210000 No.10, Xianjing Road, Xianlin street, Qixia District, Nanjing City, Jiangsu Province Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Address before: 210000 No.10, Xianjing Road, Xianlin street, Qixia District, Nanjing City, Jiangsu Province Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |