Anti-blocking furnace tube leakage sampling tube

Abstract

The utility model discloses an anti-blocking furnace tube leakage sampling tube which comprises a tube body, an inductor, a cleaning part and a flushing and blowing part, the tube body is arranged to be a cylindrical piece, the two ends of the tube body are respectively an open end and a closed end, the tube body is fixedly arranged on the tube wall of a furnace tube, the open end of the tube body is arranged in the furnace tube, the inductor is fixedly arranged on the outer wall of the tube body, and the cleaning part is arranged on the cleaning part. A sensing head of the sensor is communicated with the interior of the pipe body, and the cleaning part and the flushing and blowing part are arranged at the closed end of the pipe body; by arranging a dual cleaning structure of the cleaning part and the flushing and blowing part, soot accumulated on the inner wall of the pipe body is scraped and cleaned through the cleaning part so as to be prevented from being accumulated on the inner wall, and then gas flushing and blowing are carried out through the flushing and blowing part, so that the soot is further blown into the furnace pipe, the cleaning strength is increased, the soot is prevented from being accumulated and blocked in the pipe body, and the service life of the furnace pipe is prolonged. And the leakage detection of the inductor is influenced.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, specifically to a leak-proof furnace tube sampling tube. Background Technology

[0002] Boiler tubes in thermal power plants are prone to leakage during long-term operation, which affects safety and thermal efficiency. In order to detect leaks in time, boiler tube leakage monitoring devices are often used. Conventional boiler tube leakage monitoring devices generally involve setting up a sampling tube and using a sensor inside the sampling tube for detection.

[0003] However, during the combustion process of the boiler, the high-temperature flue gas carries a large amount of dust. Especially during furnace negative pressure fluctuations or soot blowing, dust easily accumulates in the sampling tube, causing blockage and affecting the timely transmission of leakage sound waves. Ash blockage not only increases equipment maintenance costs but can also seriously affect the safe operation of the boiler. Traditional sampling tubes are designed with timed purging, which can clear blockages most of the time. However, in actual production, insufficient purging force or stubborn dust accumulation can still lead to blockage of the sampling tube.

[0004] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content

[0005] To address the aforementioned technical deficiencies, the present invention provides a leak-proof furnace tube sampling tube, comprising a tube body, a sensor, a cleaning section, and a purging section. The tube body is a cylindrical component with an open end and a closed end at its two ends. The tube body is fixedly mounted on the wall of the furnace tube, with the open end of the tube located inside the furnace tube. The sensor is fixedly mounted on the outer wall of the tube body, and the sensor head of the sensor communicates with the interior of the tube body. Both the cleaning section and the purging section are located at the closed end of the tube body. The cleaning section includes a brush head and a moving rod, with the brush head located at the end of the moving rod and inside the tube body. The purging section includes a purging pipe, one end of which is fixedly mounted at the closed end of the tube body, and the other end connected to an external blowing device. A purging channel is provided inside the purging pipe, and the external blowing device blows purging gas into the interior of the tube body through the purging channel.

[0006] Preferably, a sealing plate is provided on the closed end of the pipe body, and the sealing plate is provided with a flushing hole and a cleaning hole. The flushing pipe is fixedly installed in the flushing hole, and the moving rod is installed in the cleaning hole.

[0007] Preferably, there are two purging holes and one cleaning hole, and the cleaning hole, the moving rod and the tube body are coaxially arranged, with the two purging holes symmetrically arranged on both sides of the cleaning hole.

[0008] Preferably, the cleaning unit further includes a first mounting plate, a connecting plate, and a movable cylinder. The first mounting plate is fixedly connected to the sealing plate through the connecting plate. The movable cylinder is fixedly mounted on the first mounting plate. The first mounting plate is provided with a through hole. The telescopic rod of the movable cylinder passes through the through hole and is connected to the end of the movable rod. The telescopic rod of the movable cylinder and the movable rod are coaxially arranged.

[0009] Preferably, four connecting plates are provided, and the two ends of the connecting plates are respectively fixedly connected to the first mounting plate and the sealing plate.

[0010] Preferably, the cleaning unit further includes a second mounting plate and a rotary motor. The second mounting plate is fixedly disposed at one end of the moving rod, and the rotary motor is fixedly disposed on the second mounting plate. The output shaft of the rotary motor is fixedly connected to the brush head, and the output shaft of the rotary motor is coaxially disposed with the moving rod.

[0011] Preferably, the axis of the blowing pipe is parallel to the axis of the moving rod, a guide plate is fixedly mounted on the moving rod, a guide hole is provided on the guide plate, and the blowing pipe is disposed in the guide hole.

[0012] Preferably, a sealing layer is provided on the end face of the second mounting plate away from the rotary motor, and the sealing layer is made of rubber.

[0013] Preferably, the moving rod is provided with a wiring cavity, which extends along the axis of the moving rod, and the second mounting plate is provided with a wiring hole corresponding to the wiring cavity. One end of the wiring cavity is connected to the wiring hole, and the other end is connected to the outside through a radially provided extension hole. The power line of the rotary motor is led to the outside of the tube through the wiring hole and the wiring cavity and through the extension hole.

[0014] Preferably, the brush head includes a connecting sleeve, an extension rod, and a brush body. The connecting sleeve is a cylindrical part and is fixedly sleeved on the output shaft of the rotary motor. One end of the extension rod is fixedly connected to the outer wall of the connecting sleeve, and the other end is fixedly connected to the brush body. The brush body is configured as an arc plate-shaped part, and a bristle-scraping layer is provided on the outer circular surface of the brush body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting up a dual cleaning structure of the cleaning part and the blowing part, uses the cleaning part to scrape and clean the soot accumulated on the inner wall of the tube to prevent soot from accumulating on the inner wall, and then uses the blowing part to blow gas to further blow the soot into the furnace tube, thereby increasing the cleaning force and preventing soot from accumulating and clogging the tube, which would affect the leakage detection of the sensor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the anti-clogging furnace tube leakage sampling tube;

[0017] Figure 2 This is a cross-sectional view of the cleaning unit;

[0018] Figure 3 This is a structural view of the brush head.

[0019] The numbers in the diagram represent:

[0020] 1-Tube body; 2-Insulator; 3-Furnace tube; 4-Brush head; 5-Moving rod; 6-Purge pipe; 7-Sealing plate; 8-First mounting plate; 9-Connecting plate; 10-Moving cylinder; 11-Second mounting plate; 12-Rotary motor; 13-Guide plate; 14-Sealing layer; 41-Connecting sleeve; 42-Extending rod; 43-Brush body; 44-Scraping layer; 45-Reinforcing rod; 51-Wire routing cavity; 52-Extending hole. Detailed Implementation

[0021] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of the anti-clogging furnace tube leakage sampling tube.

[0024] The anti-clogging furnace tube leakage sampling tube of this utility model includes a tube body 1, a sensor 2, a cleaning section, and a purging section. The tube body 1 is a cylindrical component with an open end and a closed end at its two ends. The tube body 1 is fixedly mounted on the wall of a furnace tube 3, with the open end of the tube body 1 located inside the furnace tube 3. The sensor 2 is fixedly mounted on the outer wall of the tube body 1, and the sensing head of the sensor 2 communicates with the interior of the tube body 1 to form a measuring point for sensing and detecting leakage within the tube body 1. The cleaning section and the purging section are both located at the closed end of the tube body 1. The cleaning section is equipped with a brush head 4 and a moving rod 5. The brush head 4 is located at the end of the moving rod 5 and is located inside the tube body 1. The brush head 4 cleans the soot accumulated on the inner wall of the tube body 1. The purging section includes a purging pipe 6. One end of the purging pipe 6 is fixedly located at the closed end of the tube body 1, and the other end is connected to an external blowing device. The purging pipe 6 is provided with 6 purging channels. The external blowing device blows purging gas into the interior of the tube body 1 through the purging pipe 6 channels to blow the cleaned soot into the furnace tube 3, thereby preventing the soot from accumulating inside the tube body 1.

[0025] Generally, a sealing plate 7 is provided on the closed end of the pipe body 1. The sealing plate 7 is used to set the closing operation of the closed section. The sealing plate 7 is provided with a flushing hole and a cleaning hole. The flushing pipe 6 is fixedly installed in the flushing hole, and the moving rod 5 is installed in the cleaning hole, thereby realizing the installation of the cleaning part and the flushing part on the sealing plate 7.

[0026] Preferably, there are two blowing holes and one cleaning hole, and the cleaning hole, the moving rod 5 and the tube body 1 are coaxially arranged. The two blowing holes are symmetrically arranged on both sides of the cleaning hole, so as to facilitate the brush head 4 to thoroughly blow the air after scraping.

[0027] This invention employs a dual cleaning structure consisting of a cleaning section and a blowing section. The cleaning section scrapes and cleans the soot accumulated on the inner wall of the tube 1, preventing it from accumulating. The blowing section then blows the soot further into the furnace tube 3, increasing the cleaning power and preventing soot from accumulating and clogging the tube 1, thus affecting the leakage detection of the sensor 2.

[0028] Example 2

[0029] like Figure 2 As shown, Figure 2This is a cross-sectional view of the cleaning unit; the cleaning unit also includes a first mounting plate 8, a connecting plate 9, and a moving cylinder 10. The first mounting plate 8 is fixedly connected to the sealing plate 7 through the connecting plate 9. The moving cylinder 10 is fixedly mounted on the first mounting plate 8. The first mounting plate 8 is provided with a through hole. The telescopic rod of the moving cylinder 10 passes through the through hole and is connected to the end of the moving rod 5. The telescopic rod of the moving cylinder 10 and the moving rod 5 are coaxially arranged, so that the brush head 4 can be driven to move axially within the tube 1 through the moving cylinder 10, which is more conducive to cleaning the soot on the inner wall of the tube 1.

[0030] There are generally four connecting plates 9. The two ends of the connecting plates 9 are fixedly connected to the first mounting plate 8 and the sealing plate 7, respectively. The gap between adjacent connecting plates 9 can facilitate the setting of the blowing pipe 6.

[0031] The cleaning unit also includes a second mounting plate 11 and a rotary motor 12. The second mounting plate 11 is fixedly disposed at one end of the moving rod 5, and the rotary motor 12 is fixedly disposed on the second mounting plate 11. The output shaft of the rotary motor 12 is fixedly connected to the brush head 4. The output shaft of the rotary motor 12 is coaxially disposed with the moving rod 5. The rotary motor 12 drives the brush head 4 to rotate around the axis of the moving rod 5, thereby making it easier to clean the soot on the inner wall of the tube body 1.

[0032] Preferably, the axis of the blowing pipe 6 is parallel to the axis of the moving rod 5. A guide plate 13 is fixedly provided on the moving rod 5. A guide hole is provided on the guide plate 13. The blowing pipe 6 is disposed in the guide hole. When the moving rod 5 moves axially, the blowing pipe 6 moves in the guide hole, thereby making the movement of the moving rod 5 more stable and reducing the shaking generated when the brush head 4 rotates.

[0033] Generally, a sealing layer 14 is provided on the end face of the second mounting plate 11 away from the rotary motor 12. The sealing layer 14 is made of rubber or other materials. After the cleaning part completes the cleaning work, the second mounting plate 11 moves towards the sealing plate 7 under the axial drive of the moving rod 5. The sealing layer 14 covers the blowing hole to achieve a sealing operation on the blowing hole, ensuring the sealing of the pipe body 1 under normal conditions.

[0034] The moving rod 5 is provided with a wiring cavity 51, which extends along the axis of the moving rod 5. The second mounting plate 11 is provided with a wiring hole corresponding to the wiring cavity 51. One end of the wiring cavity 51 is connected to the wiring hole, and the other end is connected to the outside through a radially provided extension hole 52. The power line of the rotary motor 12 is led to the outside of the tube body 1 through the wiring hole and the wiring cavity 51 and the extension hole 52, thereby avoiding the impact on the sealing performance of the tube body 1.

[0035] Example 3

[0036] like Figure 3 As shown, Figure 3 This is a structural view of the brush head; the brush head 4 includes a connecting sleeve 41, an extension rod 42, and a brush body 43. The connecting sleeve 41 is a cylindrical part and is fixedly sleeved on the output shaft of the rotary motor 12. One end of the extension rod 42 is fixedly connected to the outer wall of the connecting sleeve 41, and the other end is fixedly connected to the brush body 43. The brush body 43 is set as an arc plate-shaped part. A scraping layer 44 is provided on the outer circular surface of the brush body 43. The scraping layer 44 scrapes the inner wall of the tube body 1. The scraping layer 44 is generally made of materials such as sandpaper. The rotary motor 12 drives the connecting sleeve 41 to rotate around the axis, thereby realizing the relative movement between the scraping layer 44 and the inner wall of the tube body 1 to achieve the cleaning operation.

[0037] The extended rod 42 extends radially along the tube body 1, and multiple extended rods 42 are provided. Each extended rod 42 is evenly distributed in a ring on the outer circular surface of the connecting sleeve 41. The gap between adjacent extended rods 42 facilitates the air blowing of the blowing part.

[0038] Generally, adjacent extension rods 42 are connected by reinforcing rods 45 to ensure the overall structural strength of the brush head 4.

[0039] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A leak-proof furnace tube sampling tube, characterized in that, The device includes a tube body, a sensor, a cleaning section, and a purging section. The tube body is a cylindrical component with an open end and a closed end at its two ends. The tube body is fixedly mounted on the wall of a furnace tube, with the open end located inside the furnace tube. The sensor is fixedly mounted on the outer wall of the tube body, and its sensing head communicates with the interior of the tube body. Both the cleaning section and the purging section are located at the closed end of the tube body. The cleaning section includes a brush head and a moving rod. The brush head is located at the end of the moving rod and is located inside the tube body. The purging section includes a purging pipe, with one end fixedly mounted at the closed end of the tube body and the other end connected to an external blowing device. A purging channel is provided inside the purging pipe, through which the external blowing device blows purging gas into the interior of the tube body.

2. The anti-clogging furnace tube leakage sampling tube as described in claim 1, characterized in that, A sealing plate is provided on the closed end of the pipe body. The sealing plate is provided with a flushing hole and a cleaning hole. The flushing pipe is fixedly installed in the flushing hole, and the moving rod is installed in the cleaning hole.

3. The anti-clogging furnace tube leakage sampling tube as described in claim 2, characterized in that, There are two purging holes and one cleaning hole. The cleaning hole, the moving rod, and the pipe body are coaxially arranged, and the two purging holes are symmetrically arranged on both sides of the cleaning hole.

4. The anti-clogging furnace tube leakage sampling tube as described in claim 3, characterized in that, The cleaning unit further includes a first mounting plate, a connecting plate, and a movable cylinder. The first mounting plate is fixedly connected to the sealing plate through the connecting plate. The movable cylinder is fixedly mounted on the first mounting plate. The first mounting plate is provided with a through hole. The telescopic rod of the movable cylinder passes through the through hole and is connected to the end of the movable rod. The telescopic rod of the movable cylinder and the movable rod are coaxially arranged.

5. The anti-clogging furnace tube leakage sampling tube as described in claim 4, characterized in that, Four connecting plates are provided, and the two ends of the connecting plates are fixedly connected to the first mounting plate and the sealing plate, respectively.

6. The anti-clogging furnace tube leakage sampling tube as described in claim 4, characterized in that, The cleaning unit also includes a second mounting plate and a rotary motor. The second mounting plate is fixedly mounted on one end of the moving rod, and the rotary motor is fixedly mounted on the second mounting plate. The output shaft of the rotary motor is fixedly connected to the brush head, and the output shaft of the rotary motor is coaxially arranged with the moving rod.

7. The anti-clogging furnace tube leakage sampling tube as described in claim 6, characterized in that, The axis of the blowing pipe is parallel to the axis of the moving rod. A guide plate is fixedly installed on the moving rod, and a guide hole is provided on the guide plate. The blowing pipe is installed in the guide hole.

8. The anti-clogging furnace tube leakage sampling tube as described in claim 6, characterized in that, A sealing layer is provided on the end face of the second mounting plate away from the rotary motor, and the sealing layer is made of rubber.

9. The anti-clogging furnace tube leakage sampling tube as described in claim 6, characterized in that, The moving rod is provided with a wiring cavity, which extends along the axis of the moving rod. The second mounting plate is provided with a wiring hole corresponding to the wiring cavity. One end of the wiring cavity is connected to the wiring hole, and the other end is connected to the outside through a radially provided extension hole. The power line of the rotary motor is led to the outside of the tube through the wiring hole and the wiring cavity and through the extension hole.

10. The anti-clogging furnace tube leakage sampling tube as described in claim 6, characterized in that, The brush head includes a connecting sleeve, an extension rod, and a brush body. The connecting sleeve is a cylindrical part and is fixedly sleeved on the output shaft of the rotary motor. One end of the extension rod is fixedly connected to the outer wall of the connecting sleeve, and the other end is fixedly connected to the brush body. The brush body is an arc plate-shaped part, and a bristle-scraping layer is provided on the outer circular surface of the brush body.

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