Roundabout flue gas sampling pipe with constant temperature control function
By setting a constant temperature heating wire and a temperature controller in the flue gas sampling tube, the problem of heat loss in the flue gas sampling tube during long-distance transportation is solved, constant temperature control and temperature monitoring are achieved, and sampling accuracy is ensured.
Patent Information
- Application Number
- CN202423186703.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing flue gas sampling tubes lack constant temperature control function, resulting in large heat loss of flue gas during long-distance transportation, cooling and condensation, and affecting the sampling accuracy.
A circuitous flue gas sampling tube design is adopted, with an insulation layer filled between the inner and outer tube bodies, and a spiral constant temperature heating wire and a thermostat are set in the inner tube body. The heat conductive sleeve is used for heat transfer, and the temperature is monitored and controlled in conjunction with the thermostat.
It realizes constant temperature heating of the flue gas sampling tube, ensures temperature stability, prevents condensation, improves sampling accuracy, and issues an alarm when the temperature is abnormal to protect the sample.
Smart Images
Figure CN223377011U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas sampling tubes, and in particular relates to a circuitous flue gas sampling tube with a constant temperature control function. Background Art
[0002] The primary function of flue gas sampling tubes is to collect and transmit flue gas samples for subsequent analysis and monitoring. Flue gas sampling tubes are widely used in industrial environments, primarily for collecting flue gas samples from emission sources such as industrial chimneys, boilers, and incinerators. These samples can be used to measure flue gas emission concentration, total emissions, and other related parameters.
[0003] At present, most of the existing flue gas sampling tubes do not have a constant temperature control function. They are generally made of a single pipe wrapped in a protective cover and are not equipped with a heating device. As a result, the flue gas loses a lot of heat when it is transported over long distances in the sampling tube. It is inconvenient to keep the collected flue gas warm, resulting in cooling and condensation, which makes the sampling accuracy low. For this reason, we propose a circuitous flue gas sampling tube with a constant temperature control function. Utility Model Content
[0004] The purpose of the utility model is to provide a circuitous flue gas sampling tube with a constant temperature control function to solve the existing problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a roundabout flue gas sampling tube with a constant temperature control function, comprising an outer tube body, a constant temperature heating wire and a temperature controller, an inner tube body is arranged inside the outer tube body, a constant temperature heating wire is arranged inside the inner tube body, the constant temperature heating wire is spirally coiled around the interior of the inner tube body, a roundabout sampling tube is arranged inside the constant temperature heating wire, a temperature controller is fixedly installed at the inner center position of the constant temperature heating wire, and the temperature controller is fixedly connected to the roundabout sampling tube.
[0006] Preferably, a heat-conducting sleeve is provided around the periphery of the constant-temperature heating wire, and the heat-conducting sleeve is wrapped around the periphery of the constant-temperature heating wire. The outer wall and the inner wall of the heat-conducting sleeve are in close contact with the outer surface of the inner tube body and the circuitous sampling tube respectively.
[0007] Preferably, cover plates are provided at both ends of the outer tube body, and one side of the cover plates is fixedly and sealedly connected to the outer tube body.
[0008] Preferably, a grille is provided on the surface of one of the cover plates, and the grille is in sealed communication with the circuitous sampling tube.
[0009] Preferably, a thermal insulation layer is provided between the outer tube body and the inner tube body, and the thermal insulation layer fills the gap between the outer tube body and the inner tube body.
[0010] Preferably, a reinforcement rope is provided inside the thermal insulation layer, and the reinforcement rope is embedded in the interior of the thermal insulation layer.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] 1. By setting a constant temperature electric heating wire on the periphery of the circuitous sampling tube and using a thermal sleeve to transfer heat between the two, the circuitous sampling tube can be heated at a constant temperature to ensure the temperature stability of the circuitous sampling tube. The temperature inside the thermal sleeve can be monitored and controlled in conjunction with a temperature controller, and an alarm can be issued when the temperature is abnormal, so that the user can quickly take protective measures to avoid damage to the sample and affect the test results.
[0013] 2. By setting up an outer tube body and an inner tube body and filling an insulation layer between the two, the thermal insulation effect is increased to ensure the stability of the temperature inside the inner tube body, reduce the heat loss rate, and achieve a long-term thermal insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the outer tube body of the utility model;
[0016] Figure 3 This is a multi-angle structural diagram of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the circuitous flue gas sampling tube of the present utility model.
[0018] In the figure: 1. Outer tube body; 2. Cover plate; 3. Grille; 4. Insulation layer; 5. Reinforcement rope; 6. Heat-conducting sleeve; 7. Constant temperature heating wire; 8. Inner tube body; 9. Circuitous sampling tube; 10. Temperature controller. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] See also Figure 1-4The utility model provides a technical solution for a roundabout flue gas sampling tube with a constant temperature control function: it includes an outer tube body 1, a constant temperature heating wire 7 and a temperature controller 10. An inner tube body 8 is arranged inside the outer tube body 1, and a constant temperature heating wire 7 is arranged inside the inner tube body 8. The constant temperature heating wire 7 is spirally coiled around the inner tube body 8, and a roundabout sampling tube 9 is arranged inside the constant temperature heating wire 7. A temperature controller 10 is fixedly installed at the center position of the constant temperature heating wire 7, and the temperature controller 10 is fixedly connected to the roundabout sampling tube 9.
[0021] Specifically, a heat-conducting sleeve 6 is provided around the periphery of the constant-temperature heating wire 7 , and the heat-conducting sleeve 6 is wrapped around the periphery of the constant-temperature heating wire 7 . The outer wall and the inner wall of the heat-conducting sleeve 6 are in close contact with the outer surfaces of the inner tube body 8 and the circuitous sampling tube 9 respectively.
[0022] Specifically, cover plates 2 are provided at both ends of the outer tube body 1 , and one side of the cover plate 2 is fixedly and sealedly connected to the outer tube body 1 .
[0023] Specifically, a grille 3 is provided on the surface of one of the cover plates 2 , and the grille 3 is in sealed communication with the circuitous sampling tube 9 .
[0024] Specifically, a thermal insulation layer 4 is provided between the outer tube body 1 and the inner tube body 8 , and the thermal insulation layer 4 fills the gap between the outer tube body 1 and the inner tube body 8 in a filling manner.
[0025] Specifically, a reinforcing rope 5 is provided inside the thermal insulation layer 4 , and the reinforcing rope 5 is embedded in the thermal insulation layer 4 .
[0026] In this embodiment, during the process of collecting flue gas, a grille 3 is opened on the surface of the cover plate 2, so that the roundabout sampling tube 9 can use the grille 3 to block larger particles of ash while collecting flue gas samples, thereby preventing them from entering the roundabout sampling tube 9 and causing blockage of the roundabout sampling tube 9. After sampling, the interior of the inner tube body 8 can be heated at a constant temperature by the constant temperature heating wire 7 during transportation, and the heat is transferred to the roundabout sampling tube 9 by the heat conductive sleeve 6, so as to achieve the purpose of constant temperature heating of the roundabout sampling tube 9, thereby ensuring the stability of the internal temperature of the inner tube body 8, avoiding large heat loss when the flue gas is transported over long distances in the sampling tube, resulting in cooling and condensation, and using the temperature controller 10 to monitor and control the temperature inside the heat conductive sleeve 6, so that when the temperature is abnormal, it can be adjusted in time and an alarm can be issued, so that the user can quickly take protective measures to avoid damage to the sample and affect the test results.
[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A circuitous flue gas sampling tube with a constant temperature control function, comprising an outer tube body (1), a constant temperature heating wire (7) and a temperature controller (10), characterized in that: An inner tube body (8) is provided inside the outer tube body (1), a constant temperature electric heating wire (7) is provided inside the inner tube body (8), the constant temperature electric heating wire (7) is spirally coiled inside the inner tube body (8), a circuitous sampling tube (9) is provided inside the constant temperature electric heating wire (7), a temperature controller (10) is fixedly installed at the center position inside the constant temperature electric heating wire (7), and the temperature controller (10) is fixedly connected to the circuitous sampling tube (9).
2. The circuitous flue gas sampling tube with constant temperature control function according to claim 1, characterized in that: A heat-conducting sleeve (6) is provided on the periphery of the constant-temperature heating wire (7), and the heat-conducting sleeve (6) is wrapped around the periphery of the constant-temperature heating wire (7). The outer wall and the inner wall of the heat-conducting sleeve (6) are in close contact with the outer surfaces of the inner tube body (8) and the circuitous sampling tube (9), respectively.
3. The circuitous flue gas sampling tube with constant temperature control function according to claim 1, characterized in that: Cover plates (2) are provided at both ends of the outer tube body (1), and one side of the cover plate (2) is fixedly and sealedly connected to the outer tube body (1).
4. The circuitous flue gas sampling tube with constant temperature control function according to claim 3, characterized in that: A grille (3) is provided on the surface of one of the cover plates (2), and the grille (3) is in sealed communication with a circuitous sampling tube (9).
5. The circuitous flue gas sampling tube with constant temperature control function according to claim 1, characterized in that: A heat-insulating layer (4) is provided between the outer tube body (1) and the inner tube body (8), and the heat-insulating layer (4) fills the gap between the outer tube body (1) and the inner tube body (8).
6. The circuitous flue gas sampling tube with constant temperature control function according to claim 5, characterized in that: A reinforcing rope (5) is provided inside the thermal insulation layer (4), and the reinforcing rope (5) is embedded in the interior of the thermal insulation layer (4).