Special high-temperature sampling tube for removable dust meter
By employing a combination of a smooth-walled, high-temperature resistant inner tube, a thermally conductive metal braided mesh, and a heating mechanism in the sampling tube of the extraction dust meter, the problems of high-temperature flue gas condensation and particulate matter accumulation were solved, thereby improving data accuracy and equipment stability.
Patent Information
- Application Number
- CN202422651120.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Traditional extraction-type dust collectors' sampling tubes are prone to condensation and mud formation in high-temperature flue gas environments, affecting data accuracy. Furthermore, the corrugated structure of existing high-temperature sampling tubes easily accumulates particulate matter, increasing the difficulty of cleaning.
It adopts a high-temperature resistant inner tube with a smooth inner wall and a corrugated outer wall design, combined with a heat-conducting metal braided mesh and an adjustable temperature heating wire, and equipped with a silicone insulation sleeve and a nylon braided mesh tube. The heating function is indicated by air vents and air bladders to prevent particulate matter from condensing and accumulating dust, and to ensure the flexibility and stability of the sampling tube.
It effectively avoids particulate matter condensation and dust accumulation, ensures the accuracy of measurement data, extends the service life of the sampling tube, and allows for convenient judgment of whether the heating function has failed through the indicator mechanism, thus improving equipment maintenance efficiency.
Smart Images
Figure CN223611231U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of auxiliary equipment for extractive dust meters, in particular to a high-temperature sampling pipe special for extractive dust meters. BACKGROUND
[0002] An extractive dust meter is an instrument for measuring the concentration of particulate matter in the air, which is widely used in industrial production, environmental monitoring and indoor air quality detection. The working principle of the extractive dust meter mainly includes three steps of sampling, processing and detection. First, the particulate matter in the air is introduced into the instrument through the sampling pipe; then, the particulate matter is processed, such as filtration, separation, etc., for subsequent detection; finally, the concentration of the particulate matter is detected by a sensor, and the corresponding data is output for user analysis and application.
[0003] The extractive dust meter needs to extract dust data from the flue of an enterprise for measurement. The temperature of the flue gas of the enterprise is usually 100-150 DEG C, and the humidity of the flue gas is 20-30%. The traditional extractive dust meter does not have a sampling pipe heating function, so that the flue gas extracted from the flue will condense in the middle of the sampling pipe line without heating, forming mud, which leads to low data measurement and affects the accuracy of the data.
[0004] To this end, some extractive dust meters begin to use high-temperature sampling pipes to heat the sampling pipe line to prevent the flue gas from condensing in the sampling pipe line and forming mud. However, the existing high-temperature sampling pipes usually use corrugated pipes as inner pipes for easy bending. However, the corrugated pipes have a certain groove depth, which easily causes the particulate matter to accumulate in the grooves of the corrugated pipes, thereby affecting the accuracy of the data and increasing the difficulty of cleaning in the later stage. Content of the utility model
[0005] In order to solve the above problems, the application provides a high-temperature sampling pipe special for extractive dust meters.
[0006] The high-temperature sampling pipe special for extractive dust meters provided by the application adopts the following technical scheme:
[0007] The high-temperature sampling pipe special for extractive dust meters comprises a high-temperature-resistant inner pipe, a heating mechanism installed on the outer side of the high-temperature-resistant inner pipe, and a protection mechanism installed on the outer side of the heating mechanism. The inner wall of the high-temperature-resistant inner pipe is smooth. The outer wall of the high-temperature-resistant inner pipe is provided with corrugations.
[0008] The heating mechanism comprises a heat-conducting metal braid fixed on the outer side of the corrugations of the high-temperature-resistant inner pipe, and an adjustable temperature control heating wire fixed on the outer wall of the heat-conducting metal braid. The protection mechanism comprises a silica gel heat preservation sleeve fixed on the outer side of the heat-conducting metal braid, and a nylon braided pipe fixed on the outer wall of the silica gel heat preservation sleeve. An indication mechanism is arranged on the outer side of the protection mechanism to indicate whether the heating function of the high-temperature sampling pipe fails.
[0009] By adopting the above technical scheme, the high-temperature sampling tube can be prevented from being affected by the condensation of the particles and the actual measurement data on site can be avoided by adopting the special high-temperature-resistant inner tube with smooth inner wall and corrugated outer wall and winding the heat-conducting metal braid to maintain toughness, preventing the particles from remaining and ensuring that the high-temperature sampling tube can be bent.
[0010] Preferably, the temperature-controllable heating wire is located inside the silica gel heat preservation sleeve.
[0011] By adopting the above technical scheme, the silica gel heat preservation sleeve is arranged outside the heat-conducting metal braid, which can provide an overall heat preservation environment.
[0012] Preferably, the nylon braided mesh tube is fixedly provided with a plurality of groups of anti-skid protrusions on the outer wall.
[0013] By adopting the above technical scheme, the plurality of groups of anti-skid protrusions can perform anti-skid treatment on the high-temperature sampling tube, improve the stability of the high-temperature sampling tube, and when the anti-skid protrusions are consumed by friction, the nylon braided mesh tube can contact the friction object, thereby prolonging the service life of the high-temperature sampling tube.
[0014] Preferably, the indication mechanism comprises a gas guide hole arranged between the silica gel heat preservation sleeve and the nylon braided mesh tube, and a gas bag fixedly arranged on the outer wall of the nylon braided mesh tube and communicated with the gas guide hole.
[0015] By adopting the above technical scheme, the air in the gas guide hole and the gas bag is heated and expanded by the heating of the heating mechanism.
[0016] Preferably, the gas bag is fixedly provided with an indication plate on the side away from the nylon braided mesh tube.
[0017] By adopting the above technical scheme, the gas bag after air expansion can lift the indication plate.
[0018] Preferably, the nylon braided mesh tube is fixedly provided with a protective tube for covering the gas bag, and the indication plate is movably arranged in the matched protective tube.
[0019] By adopting the above technical scheme, the staff can observe the height and position of the indication plate in the protective tube to determine whether the heating function of the high-temperature sampling tube fails, thereby indicating.
[0020] In summary, the present application has at least one of the following beneficial technical effects:
[0021] 1. By adopting a special high-temperature-resistant inner tube with smooth inner wall and corrugated outer wall, and winding a heat-conducting metal braid to maintain toughness, both particle residue prevention and high-temperature sampling tube bendability are ensured, through heating by a heating mechanism, particle residue condensation and ash accumulation are avoided as much as possible to affect actual measurement data on site, and through heating by temperature-controllable heating wires and heat preservation by a silica gel heat preservation sleeve, sufficient heating temperature is ensured and the influence of external weather conditions on the sampling tube itself is prevented.
[0022] 2. The sampling tube is protected by a nylon braided tube, a plurality of anti-skid protrusions can perform anti-skid treatment on the high-temperature sampling tube to improve the stability of the high-temperature sampling tube, and the nylon braided tube can contact the rubbed object after the anti-skid protrusions are consumed by friction, thereby prolonging the service life of the high-temperature sampling tube and preventing the high-temperature sampling tube from being easily worn out.
[0023] 3. Through heating by the heating mechanism, the air in the air guide hole and the air bag is heated and expanded, the air bag after air expansion can lift the indicator plate, the staff can observe the height and position of the indicator plate in the protection tube to determine whether the heating function of the high-temperature sampling tube fails, thereby indicating, and the protection tube can cover the air bag to prevent the air bag from being easily punctured by other surrounding objects and leaking. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is the overall structure schematic diagram of the high-temperature sampling tube special for the extractable dust instrument of the embodiment of the present application;
[0025] Figure 2 It is the overall structure front view sectional view of the high-temperature sampling tube special for the extractable dust instrument of the embodiment of the present application;
[0026] Figure 3 It is the enlarged view of the main embodiment A structure of the present application; Figure 1
[0027] Figure 4 It is the enlarged view of the main embodiment B structure of the present application; Figure 2
[0028] Reference signs: 1, high-temperature-resistant inner tube; 11, corrugation; 2, heat-conducting metal braid; 3, temperature-controllable heating wire; 4, silica gel heat preservation sleeve; 5, nylon braided tube; 51, anti-skid protrusion; 6, air guide hole; 61, air bag; 62, indicator plate; 63, protection tube. DETAILED DESCRIPTION
[0029] The present application will be further described in detail below with reference to the accompanying drawings. Figures 1-4
[0030] The embodiment of the present application discloses a high-temperature sampling tube special for an extractable dust instrument.
[0031] The high-temperature sampling pipe special for the extractive dust instrument, referring to Figures 1-2 , comprising a high-temperature resistant inner tube 1, a heating mechanism, and a protection mechanism, the high-temperature sampling pipe is installed at the feeding end of the extractive dust instrument, for the disclosed technology, which will not be described here, the inner wall of the high-temperature resistant inner tube 1 is smooth, the outer wall of the high-temperature resistant inner tube 1 is provided with corrugations 11, due to the smooth inner wall of the high-temperature resistant inner tube 1, the particulate matter in the flue dust is prevented from remaining in the high-temperature resistant inner tube 1, and the smooth inner wall of the high-temperature resistant inner tube 1 can be bent like a hose with smooth inner and outer walls, cooperating with the setting of the outer wall corrugations 11, a greater bending amplitude of the high-temperature resistant inner tube 1 can be provided.
[0032] Referring to Figures 1-2 , the heating mechanism comprises a heat-conducting metal braid 2 fixed outside the corrugations 11 of the high-temperature resistant inner tube 1, and an adjustable temperature control heating wire 3 fixed outside the heat-conducting metal braid 2, the heat-conducting metal braid 2 wraps the high-temperature resistant inner tube 1, ensuring that the high-temperature resistant inner tube 1 will not be extruded, deformed, and damaged, the adjustable temperature control heating wire 3 is wound outside the heat-conducting metal braid 2 to provide heating for the heat tracing pipe, the heat-conducting metal braid 2 can well conduct heat uniformly, the adjustable temperature control heating wire 3 is connected with an external temperature controller, the heating temperature is set through the external temperature controller, and the temperature can be set to be greater than the flue gas dew point temperature by more than 10°C, wherein the adjustable temperature control heating wire 3 and the external temperature controller are common heating equipment, and the internal circuit connection and principle have been disclosed, which will not be described here.
[0033] Referring to Figures 1-2 , the protection mechanism comprises a silica gel heat preservation sleeve 4 fixed outside the heat-conducting metal braid 2, and a nylon braided mesh tube 5 fixed outside the outer wall of the silica gel heat preservation sleeve 4, the adjustable temperature control heating wire 3 is located inside the silica gel heat preservation sleeve 4, the silica gel heat preservation sleeve 4 is made of silica gel heat preservation material, the silica gel heat preservation sleeve 4 is arranged outside the heat-conducting metal braid 2, can provide an overall heat preservation environment, and the nylon braided mesh tube 5 can wrap the silica gel heat preservation sleeve 4 and the like as a whole and protect the high-temperature sampling pipe from the outside.
[0034] Referring to Figures 1-2 , a plurality of groups of anti-skid protrusions 51 are fixedly arranged on the outer wall of the nylon braided mesh tube 5, the anti-skid protrusions 51 can be hemispherical in shape made of rubber material, the plurality of groups of anti-skid protrusions 51 can perform anti-skid treatment on the high-temperature sampling pipe, improve the stability of the high-temperature sampling pipe, and when the outermost anti-skid protrusions 51 are consumed by friction, the nylon braided mesh tube 5 can contact the friction object, thereby prolonging the service life of the high-temperature sampling pipe and preventing the high-temperature sampling pipe from being easily worn out.
[0035] Referring to Figures 1-4The protection mechanism is provided with an indication mechanism outside the mechanism for indicating whether the heating function of the high-temperature sampling tube is invalid, the indication mechanism comprises a gas guide hole 6 provided between the silica gel heat preservation sleeve 4 and the nylon braided mesh tube 5, and a gas bag 61 fixed on the outer wall of the nylon braided mesh tube 5 and communicated with the gas guide hole 6, and the air in the gas guide hole 6 and the gas bag 61 is heated and expanded by the heating of the heating mechanism.
[0036] With reference to Figures 1-4 The side of the gas bag 61 away from the nylon braided mesh tube 5 is fixed with an indication plate 62, the outer wall of the nylon braided mesh tube 5 is fixed with a protective tube 63 for covering the gas bag 61, the indication plate 62 is movably arranged in the corresponding protective tube 63, and the indication plate 62 can be lifted by the gas bag 61 after the air expansion, so that the staff can determine whether the heating function of the high-temperature sampling tube is invalid by observing the height and position of the indication plate 62 in the protective tube 63, for example, if the indication plate 62 is at a higher position in the protective tube 63, it means that the heating function of the heating mechanism is good, if the indication plate 62 is at a lower position in the protective tube 63, it means that the air in the gas bag 61 and other components is not heated and expanded, so the heating function of the heating mechanism is invalid, thereby indicating, and the protective tube 63 can cover the gas bag 61, so that the gas bag 61 is not easily punctured by other surrounding objects.
[0037] The implementation principle of the high-temperature sampling tube for the extractable dust instrument in the embodiment of the application is as follows:
[0038] In use, the special high-temperature inner tube 1 with smooth inner wall and corrugated outer wall 11 is adopted, and the heat-conducting metal braided mesh 2 is wound to maintain toughness, so that the particulate matter is prevented from remaining and the high-temperature sampling tube is ensured to be bendable, the air in the gas guide hole 6 and the gas bag 61 is heated and expanded by the heating of the heating mechanism, the gas bag 61 after the air expansion can lift the indication plate 62, and the staff can determine whether the heating function of the high-temperature sampling tube is invalid by observing the height and position of the indication plate 62 in the protective tube 63, for example, if the indication plate 62 is at a higher position in the protective tube 63, it means that the heating function of the heating mechanism is good, if the indication plate 62 is at a lower position in the protective tube 63, it means that the air in the gas bag 61 and other components is not heated and expanded, so the heating function of the heating mechanism is invalid, thereby indicating, and the protective tube 63 can cover the gas bag 61, so that the gas bag 61 is not easily punctured by other surrounding objects.
[0039] The air in the gas guide hole 6 and the gas bag 61 is heated and expanded by the heating of the heating mechanism, the gas bag 61 after the air expansion can lift the indication plate 62, and the staff can determine whether the heating function of the high-temperature sampling tube is invalid by observing the height and position of the indication plate 62 in the protective tube 63, for example, if the indication plate 62 is at a higher position in the protective tube 63, it means that the heating function of the heating mechanism is good, if the indication plate 62 is at a lower position in the protective tube 63, it means that the air in the gas bag 61 and other components is not heated and expanded, so the heating function of the heating mechanism is invalid, thereby indicating, and the staff can quickly repair and replace the high-temperature sampling tube with invalid heating function.
[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A high-temperature sampling tube special for a portable dust sampler, comprising a high-temperature-resistant inner tube (1), a heating mechanism installed outside the high-temperature-resistant inner tube (1), and a protection mechanism installed outside the heating mechanism, characterized in that: the inner wall of the high-temperature-resistant inner tube (1) is smooth, and the outer wall of the high-temperature-resistant inner tube (1) is provided with corrugations (11); the heating mechanism comprises a heat-conducting metal braid (2) fixed outside the corrugations (11) of the high-temperature-resistant inner tube (1), and a temperature-controllable heating wire (3) fixed outside the outer wall of the heat-conducting metal braid (2); the protection mechanism comprises a silica gel heat preservation sleeve (4) fixed outside the heat-conducting metal braid (2), and a nylon braid tube (5) fixed outside the outer wall of the silica gel heat preservation sleeve (4), and the protection mechanism is provided with an indicating mechanism outside for indicating whether the heating function of the high-temperature sampling tube fails; the temperature-controllable heating wire (3) is located inside the silica gel heat preservation sleeve (4); the outer wall of the nylon braid tube (5) is fixed with a plurality of groups of anti-skid protrusions (51); the indicating mechanism comprises an air guide hole (6) opened between the silica gel heat preservation sleeve (4) and the nylon braid tube (5), and an air bag (61) fixed outside the outer wall of the nylon braid tube (5) and communicating with the air guide hole (6); the side of the air bag (61) away from the nylon braid tube (5) is fixed with an indicating plate (62); the outer wall of the nylon braid tube (5) is fixed with a protective tube (63) for covering the air bag (61), and the indicating plate (62) is movably arranged in the matched protective tube (63). 2. The special high temperature sampling tube for the extractive dust tester according to claim 1, characterized in that: 3. The special high temperature sampling tube for the extractive dust tester according to claim 1, characterized in that: 4. The special high temperature sampling tube for the extractive dust tester according to claim 1, characterized in that: 5. The special high temperature sampling tube for the extractive dust tester according to claim 4, characterized in that: 6. The special high temperature sampling tube for the extractive dust tester according to claim 5, characterized in that: