Probe fixing device and flue gas flow rate monitoring device

Abstract

The invention relates to the technical field of flue gas flow velocity detection, in particular to a probe fixing device and a flue gas flow velocity monitoring device. The probe fixing device comprises a supporting sleeve, a push-pull mechanism, a transmission mechanism and a plurality of connecting mechanisms; the supporting sleeve can be arranged in the peripheral wall of the chimney in a penetrating mode, the supporting sleeve is provided with an installation channel, the connecting mechanisms are rotatably installed on the side portion of the supporting sleeve, all the connecting mechanisms are distributed at intervals in the axial direction of the supporting sleeve, and the connecting mechanisms are provided with installation parts; the transmission mechanism is arranged in the mounting channel of the supporting sleeve, and the push-pull mechanism is mounted at the head end of the supporting sleeve; the push-pull mechanism drives the connecting mechanism to rotate through the transmission mechanism so that the connecting mechanism can rotate between the folding position and the unfolding position. By adopting the probe fixing device provided by the invention, the number of the formed mounting holes is reduced, so that the mounting workload of the probe is reduced, and the mounting period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas velocity detection, in particular to a probe fixing device and a flue gas velocity monitoring device. Background Art

[0002] Accurately measuring the flue gas flow rate is of great reference value for optimizing combustion and evaluating the total amount of pollutant emissions.

[0003] At present, the flow rate detection method of flue gas in the chimney is as follows: a plurality of installation holes distributed at intervals are opened on the chimney, and then a probe of a flue gas flow rate detector is installed at each installation hole, and then the probes of these flue gas flow rate monitors detect the flue gas flow rate at different positions.

[0004] However, since it is necessary to open a plurality of mounting holes on the chimney and install a probe of the flue gas velocity detector at each mounting hole, the installation workload of the probe is increased and the installation period is prolonged. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem in the prior art that a plurality of openings need to be opened on the peripheral wall of the chimney and the probe of the flue gas velocity detector needs to be installed, which results in an increase in the installation workload and a prolonged installation period.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a probe fixing device on the one hand, which includes a support sleeve, a push-pull mechanism, a transmission mechanism and a plurality of connecting mechanisms; the support sleeve can be inserted into the peripheral wall of the chimney, the support sleeve is provided with an installation channel extending along its axial direction and capable of placing a pipeline of a flue gas flow rate monitor, the connecting mechanism is rotatably installed on the side of the support sleeve, all the connecting mechanisms are spaced along the axial direction of the support sleeve, and the connecting mechanism has a mounting portion capable of installing a probe of the flue gas flow rate monitor; the transmission mechanism is arranged in the mounting channel of the support sleeve, and the push-pull mechanism is installed at the head end of the support sleeve; the push-pull mechanism drives the connecting mechanism to rotate through the transmission mechanism, so that the connecting mechanism can rotate between a stowed position and an extended position; when the connecting mechanism is in the stowed position, the mounting portion of the connecting mechanism is against the side of the support sleeve; when the connecting mechanism is in the extended position, the mounting portion of the connecting mechanism is spaced apart from the side of the support sleeve.

[0007] In some embodiments, the support sleeve is configured as a square tube, a support plate is installed at the head end of the support sleeve, the support plate is located below the transmission mechanism and the two are spaced apart, and the push-pull mechanism is fixedly installed on the top surface of the support plate.

[0008] In some embodiments, the external fixing sleeve of the support sleeve is provided with a fixing sleeve, the head end of the fixing sleeve is fixedly installed with a flange, the head end of the support sleeve passes through the flange, the support plate is installed on the side of the flange facing away from the fixing sleeve, and a plurality of long holes are provided on the flange, and all the long holes are spaced around the support sleeve; when the connecting mechanism is in the retracted position, the projection of the flange is able to cover the projection of the connecting mechanism when projected in the axial direction of the support sleeve.

[0009] In some embodiments, the push-pull mechanism further includes a base plate, a connecting seat, a guide cylinder, a first connecting plate, a handle, a connecting column and two second connecting plates; the base plate is fixedly mounted on the top surface of the support plate, and the base plate and the head end of the support sleeve are spaced axially from each other in the support sleeve; the connecting seat and the guide cylinder are fixedly mounted on the top surface of the base plate, the connecting seat and the guide cylinder are spaced axially from each other in the support sleeve, the head end of the first connecting plate is rotatably connected to the connecting seat, the end of the handle is fixedly connected to the end of the first connecting plate, and an obtuse angle is formed between the handle and the first connecting plate; the head end of the second connecting plate is rotatably connected to the end of the first connecting plate, the end of the second connecting plate is rotatably connected to the head end of the connecting column, and the first connecting plate is located between the two second connecting plates, and the end of the connecting column is fixedly connected to the transmission mechanism.

[0010] In some embodiments, a threaded hole is provided on the guide cylinder, a positioning bolt is threadedly installed in the threaded hole, and the end of the screw rod of the positioning bolt can squeeze the connecting column.

[0011] In some embodiments, the transmission mechanism includes a sliding rod and multiple connecting blocks. The sliding rod is arranged in the installation channel of the support sleeve, and the axis of the sliding rod coincides with the axis of the support sleeve. The head end of the sliding rod is fixedly connected to the end of the connecting column; the connecting block ring is arranged on the outside of the sliding rod, and the connecting block is fixedly connected to the sliding rod. All connecting blocks are distributed at intervals along the axial direction of the sliding rod, and all connecting mechanisms are rotatably connected to all connecting blocks one by one.

[0012] In some embodiments, the transmission mechanism further includes a guide sleeve, which is located in the installation channel and fixedly connected to the head end of the support sleeve, the slide rod moves through the guide sleeve, and the axis of the slide rod coincides with the axis of the guide sleeve.

[0013] In some embodiments, all connecting mechanisms include multiple first connecting mechanisms and multiple second connecting mechanisms, and the first connecting mechanisms and the second connecting mechanisms are respectively located on both sides of the support sleeve in its width direction; and the first connecting mechanisms and the second connecting mechanisms are alternately distributed in the axial direction of the support sleeve; and / or, the tube wall of the support sleeve is provided with multiple spaced perforations, and all perforations correspond one by one to all connecting mechanisms; the connecting mechanism includes a third connecting plate and a rotating rod, the third connecting plate moves through the corresponding perforations, the head end of the third connecting plate is rotatably connected to the corresponding connecting block, the end of the third connecting plate is rotatably connected to the middle part of the rotating rod, and the head end of the rotating rod is rotatably connected to the tube wall of the support sleeve; a mounting portion is provided at the end of the rotating rod; when the connecting mechanism is in the expanded position, the rotating rod is pressed against the edge of the perforation.

[0014] In some embodiments, the rotating rod includes a first rod segment and a second rod segment, the head end of the first rod segment is rotatably connected to the tube wall of the supporting sleeve, the end of the first rod segment is fixedly connected to the head end of the second rod segment, the angle between the axis of the first rod segment and the axis of the second rod segment is an obtuse angle, and the end of the third connecting plate is rotatably connected to the end of the first rod segment; a mounting portion is provided at the end of the second rod segment; when the connecting mechanism is in the expanded position, the first rod segment is pressed against the edge of the perforation.

[0015] On the other hand, the present invention provides a flue gas flow rate monitoring device, which includes multiple flue gas flow rate monitors and a probe fixing device of any of the above-mentioned embodiments, and the multiple flue gas flow rate monitors correspond one by one to the connecting mechanisms of the multiple probe fixing devices respectively; the flue gas flow rate monitor includes a pressure meter and a probe, and the probe includes two Pitot tubes, and the two Pitot tubes are installed on the mounting part of the corresponding connecting mechanism, wherein the air inlet of one Pitot tube is downward, and the air inlet of the other Pitot tube is upward, and the air outlets of the two Pitot tubes are connected to the pressure meter through a hose, and the hose passes through the installation channel, and the pressure meter is located outside the support sleeve.

[0016] The above technical solution of the present invention has the following beneficial effects: A probe of a flue gas flow rate monitor can be installed on the mounting portion of each connecting mechanism. The push-pull mechanism is operated, and the push-pull mechanism drives all the connecting mechanisms to rotate to the retracted position through the transmission mechanism. At this time, all the connecting mechanisms drive the probes to lean against the side of the supporting sleeve, so the entire probe fixing device is in a compact structure. Therefore, it is only necessary to open a mounting hole on the peripheral wall of the chimney, and then install and fix the supporting sleeve at the mounting hole, and make all the connecting mechanisms located in the smoke passage of the chimney, so that all the probes of the flue gas flow rate monitor can be distributed in the smoke passage of the chimney. Then the push-pull mechanism is operated, and the push-pull mechanism drives all the connecting mechanisms to rotate to the unfolded position through the transmission mechanism, so as to expand the distribution range of the probes and detect the smoke at different positions. Therefore, by adopting the probe fixing device of the present invention, it is only necessary to set a mounting hole on the peripheral wall of the chimney to realize the detection of flue gas flow rates at different positions, without opening multiple mounting holes on the peripheral wall of the chimney to install the probes, so the number of mounting holes is reduced, thereby reducing the installation workload of the probes and shortening the installation period. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of a probe fixing device in one embodiment of the present invention; Figure 2 is a three-dimensional schematic diagram of a probe fixing device in another embodiment of the present invention; Figure 3 is a three-dimensional schematic diagram of a push-pull mechanism in one embodiment of the present invention; Figure 4 is a three-dimensional schematic diagram of a push-pull mechanism in another embodiment of the present invention; Figure 5 is a schematic diagram of a connecting mechanism in an embodiment of the present invention in an extended position; Figure 6 is a schematic diagram of a connecting mechanism in a stowed position according to an embodiment of the present invention; Figure 7 is a schematic diagram of a probe fixing device installed on a chimney in one embodiment of the present invention; Figure 8 It is a schematic diagram of the installation of the positioning bolts in one embodiment of the present invention.

[0018] Description of Reference Numerals 1. Support sleeve; 11. Support plate; 12. Fixed sleeve; 13. Flange; 14. Perforation; 2. Push-pull mechanism; 21. Bottom plate; 22. Connecting seat; 23. Guide cylinder; 24. First connecting plate; 25. Handle; 26. Connecting column; 27. Second connecting plate; 28. Positioning bolt; 3. Transmission mechanism; 31. Sliding rod; 32. Connecting block; 33. Guide sleeve; 4. Connecting mechanism; 41. Third connecting plate; 42. Rotating rod; 421. First rod section; 422. Second rod section; 5. Pitot tube; 6. Chimney; 61. Smoke duct. DETAILED DESCRIPTION

[0019] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0020] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the present invention provides a probe fixing device, which includes a support sleeve 1, a push-pull mechanism 2, a transmission mechanism 3 and a plurality of connecting mechanisms 4. The support sleeve 1 can be inserted into the peripheral wall of the chimney 6, and the support sleeve 1 is provided with an installation channel extending along its axial direction and capable of placing a pipeline of a flue gas flow rate monitor, and the connecting mechanism 4 is rotatably installed on the side of the support sleeve 1, and all the connecting mechanisms 4 are distributed at intervals along the axial direction of the support sleeve 1, and the connecting mechanism 4 has a mounting portion capable of mounting a probe of a flue gas flow rate monitor. The transmission mechanism 3 is arranged in the mounting channel of the support sleeve 1, and the push-pull mechanism 2 is installed at the head end of the support sleeve 1; the push-pull mechanism 2 drives the connecting mechanism 4 to rotate through the transmission mechanism 3, so that the connecting mechanism 4 can rotate between a stowed position and an unfolded position. When the connecting mechanism 4 is in the stowed position, the mounting portion of the connecting mechanism 4 is against the side of the support sleeve 1; when the connecting mechanism 4 is in the unfolded position, the mounting portion of the connecting mechanism 4 is spaced apart from the side of the support sleeve 1.

[0021] Specifically, a probe of a flue gas flow rate monitor can be installed on the mounting portion of each connecting mechanism 4. Operate the push-pull mechanism 2, and the push-pull mechanism 2 drives all the connecting mechanisms 4 to rotate to the retracted position through the transmission mechanism 3. At this time, all the connecting mechanisms 4 drive the probes to lean against the side of the supporting sleeve 1, so the entire probe fixing device is in a compact structure. Therefore, it is only necessary to open a mounting hole on the peripheral wall of the chimney 6, and then install and fix the supporting sleeve 1 at the mounting hole, and make all the connecting mechanisms 4 located in the flue gas channel 61 of the chimney 6, so that all the probes of the flue gas flow rate monitor can be distributed in the flue gas channel 61 of the chimney 6. Then operate the push-pull mechanism 2, and the push-pull mechanism 2 drives all the connecting mechanisms 4 to rotate to the unfolded position through the transmission mechanism 3, so as to expand the distribution range of the probes and detect the flue gas at different positions. Therefore, by adopting the probe fixing device of the present invention, only one mounting hole is required on the peripheral wall of the chimney 6 to realize the detection of flue gas velocity at different positions, without the need to open multiple mounting holes on the peripheral wall of the chimney 6 to install the probe, so the number of mounting holes is reduced, thereby reducing the installation workload of the probe and shortening the installation period. In other words, the present invention solves the problem of realizing distributed multi-point velocity monitoring through a single mounting hole, avoids secondary construction of the chimney, and greatly improves the convenience of installation.

[0022] In some implementations, such as Figure 7 As shown, a plurality of probe fixtures can be installed at intervals on the peripheral wall of the chimney to further expand the detection range.

[0023] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the support sleeve 1 is configured as a square tube, a support plate 11 is installed at the head end of the support sleeve 1, the support plate 11 is located below the transmission mechanism 3 and the two are spaced apart, and the push-pull mechanism 2 is fixedly installed on the top surface of the support plate 11.

[0024] Specifically, the support plate 11 can provide an installation platform for the push-pull mechanism 2, so as to facilitate the push-pull operation of the push-pull mechanism 2. In addition, the wall of the square tube is relatively flat, so it is convenient to install the connection mechanism 4.

[0025] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the outer fixed sleeve of the support sleeve 1 is provided with a fixed sleeve 12, the head end of the fixed sleeve 12 is fixedly installed with a flange 13, the head end of the support sleeve 1 passes through the flange 13, the support plate 11 is installed on the side of the flange 13 facing away from the fixed sleeve 12, and the flange 13 is provided with a plurality of long holes, all of which are spaced around the support sleeve 1. When the connecting mechanism 4 is in the retracted position, the projection of the flange 13 in the axial direction of the support sleeve 1 can cover the projection of the connecting mechanism 4.

[0026] Specifically, the flange 13 is fixedly connected to the support sleeve 1 through the fixing sleeve 12, so that the flange 13 is stably connected to the support sleeve 1. The support sleeve 1 can be fixedly connected to the peripheral wall of the chimney 6 through the flange 13, so that the support sleeve 1 is firmly fixed on the peripheral wall of the chimney 6. Bolts can be set in the long holes and the positions of the bolts can be adjusted, so that the position of the support sleeve 1 can be fine-tuned during the installation process.

[0027] like Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the push-pull mechanism 2 further includes a bottom plate 21, a connection seat 22, a guide cylinder 23, a first connection plate 24, a handle 25, a connection column 26 and two second connection plates 27. The bottom plate 21 is fixedly mounted on the top surface of the support plate 11, and the bottom plate 21 and the head end of the support sleeve 1 are spaced apart in the axial direction of the support sleeve 1; the connection seat 22 and the guide cylinder 23 are fixedly mounted on the top surface of the bottom plate 21, and the connection seat 22 and the guide cylinder 23 are spaced apart in the axial direction of the support sleeve 1, the head end of the first connection plate 24 is rotatably connected to the connection seat 22, the end of the handle 25 is fixedly connected to the end of the first connection plate 24, and the handle 25 and the first connection plate 24 form an obtuse angle; the head end of the second connection plate 27 is rotatably connected to the end of the first connection plate 24, the end of the second connection plate 27 is rotatably connected to the head end of the connection column 26, and the first connection plate 24 is located between the two second connection plates 27, and the end of the connection column 26 is fixedly connected to the transmission mechanism 3.

[0028] Specifically, the handle 25 is pushed in the direction toward the head end of the support sleeve 1, and the end of the handle 25 drives the first connecting plate 24, the second connecting plate 27 and the connecting column 26 to move in sequence, and the connecting column 26 drives the transmission mechanism 3 to move linearly in the direction away from the connecting seat 22, and the transmission mechanism 3 will further drive the connecting mechanism 4 to rotate from the deployed position to the retracted position. When the transmission mechanism 3 is in the retracted position, the entire probe fixing device is in a compact state, which is convenient for installation at the opening of the peripheral wall of the chimney 6. The handle 25 is pulled in the direction away from the head end of the support sleeve 1, and the end of the handle 25 drives the first connecting plate 24, the second connecting plate 27 and the connecting column 26 to move in sequence, and the connecting column 26 pulls the transmission mechanism 3 to move linearly in the direction close to the connecting seat 22, and the transmission mechanism 3 will further drive the connecting mechanism 4 to rotate from the retracted position to the deployed position. When the transmission mechanism 3 is in the deployed position, multiple probes are located at different positions of the smoke channel 61 to detect the smoke flow rate at different positions.

[0029] Of course, the push-pull mechanism 2 may also be any other structural form that can achieve the above technical effects, and the present invention does not limit this.

[0030] like Figure 8As shown, in some embodiments of the present invention, a threaded hole is provided on the guide cylinder 23 , and a positioning bolt 28 is threadedly installed in the threaded hole. The end of the screw rod of the positioning bolt 28 can squeeze the connecting column 26 .

[0031] Specifically, when it is necessary to detect at a position between the stowed position and the deployed position, operate the handle 25 to rotate the connecting mechanism 4 to the target position between the stowed position and the deployed position, and then rotate the positioning bolt 28 so that the end of the screw rod of the positioning bolt 28 squeezes the connecting column 26 to fix the position of the connecting column 26, thereby fixing the position of the transmission mechanism 3 and fixing the connecting mechanism 4 at the target position.

[0032] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the transmission mechanism 3 includes a sliding rod 31 and a plurality of connecting blocks 32, the sliding rod 31 is arranged in the installation channel of the support sleeve 1, and the axis of the sliding rod 31 coincides with the axis of the support sleeve 1, and the head end of the sliding rod 31 is fixedly connected to the end of the connecting column 26; the connecting block 32 is arranged on the outside of the sliding rod 31, and the connecting block 32 is fixedly connected to the sliding rod 31, all the connecting blocks 32 are distributed at intervals along the axial direction of the sliding rod 31, and all the connecting mechanisms 4 are rotatably connected to all the connecting blocks 32 one by one.

[0033] Specifically, push the handle 25 in the direction toward the head end of the support sleeve 1, and the end of the handle 25 drives the first connecting plate 24, the second connecting plate 27 and the connecting column 26 to move in sequence, and the connecting column 26 drives the slide bar 31 to move linearly in the direction away from the connecting seat 22, and the slide bar 31 will further drive the connecting mechanism 4 to rotate from the unfolded position to the stowed position through the connecting block 32. Pull the handle 25 in the direction away from the head end of the support sleeve 1, and the end of the handle 25 drives the first connecting plate 24, the second connecting plate 27 and the connecting column 26 to move in sequence, and the connecting column 26 drives the slide bar 31 to move linearly in the direction close to the connecting seat 22, and the slide bar 31 will further drive the connecting mechanism 4 to rotate from the stowed position to the unfolded position through the connecting block 32. The transmission mechanism 3 has a simple structure and light weight, and can leave enough space for the installation channel to place the pipeline of the flue gas flow rate monitor.

[0034] Of course, the transmission mechanism 3 may also be any other structural form that can achieve the above technical effects, and the present invention does not limit this.

[0035] like Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the transmission mechanism 3 also includes a guide sleeve 33, which is located in the installation channel and fixedly connected to the head end of the support sleeve 1, the slide rod 31 moves through the guide sleeve 33, and the axis of the slide rod 31 coincides with the axis of the guide sleeve 33.

[0036] Specifically, the slide bar 31 can move along the guide sleeve 33 , thereby increasing the stability of the slide bar 31 when moving and preventing the slide bar 31 from shaking.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, all connecting mechanisms 4 include multiple first connecting mechanisms and multiple second connecting mechanisms, and the first connecting mechanisms and the second connecting mechanisms are respectively located on both sides of the support sleeve 1 in its width direction; and the first connecting mechanisms and the second connecting mechanisms are alternately distributed in the axial direction of the support sleeve 1.

[0038] Specifically, the probes can be distributed on the first connection mechanism and the second connection mechanism. Setting the connection mechanism 4 in the above distribution mode can expand the detection range and make the detection result more accurate; it also disperses the resistance generated by the impact of the measured fluid and facilitates the laying of the sensor connection cable or hose.

[0039] like Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the tube wall of the support sleeve 1 is provided with a plurality of spaced-apart perforations 14, and all the perforations 14 correspond one-to-one to all the connecting mechanisms 4; the connecting mechanism 4 includes a third connecting plate 41 and a rotating rod 42, the third connecting plate 41 movably passes through the corresponding perforations 14, the head end of the third connecting plate 41 is rotatably connected to the corresponding connecting block 32, the tail end of the third connecting plate 41 is rotatably connected to the middle part of the rotating rod 42, and the head end of the rotating rod 42 is rotatably connected to the tube wall of the support sleeve 1; a mounting portion is provided at the tail end of the rotating rod 42; when the connecting mechanism 4 is in the expanded position, the rotating rod 42 is pressed against the edge of the perforation 14.

[0040] Specifically, when the slide bar 31 moves toward the end of the support sleeve, the slide bar 31 drives the rotating rod 42 to rotate from the deployed position to the retracted position through the third connecting plate 41. And when the connecting mechanism 4 is in the retracted position, the rod segment where the end of the rotating rod 42 is located can contact the tube wall of the support sleeve 1. When the slide bar 31 moves toward the head end of the support sleeve, the slide bar 31 drives the rotating rod 42 to rotate from the retracted position to the deployed position through the third connecting plate 41. And when the connecting mechanism 4 is in the deployed position, the rod segment where the head end of the rotating rod 42 is located is pressed against the edge of the perforation 14 to limit the further rotation of the rotating rod 42. In addition, the above-mentioned structure can give full play to the dead point characteristics of the structure, so that the rotating rod 42 is fixed at the maximum deployment angle, which effectively improves the stability of the connecting mechanism 4 when it is impacted.

[0041] like Figure 5 and Figure 6As shown, in some embodiments of the present invention, the rotating rod 42 includes a first rod segment 421 and a second rod segment 422, the head end of the first rod segment 421 is rotatably connected to the tube wall of the supporting sleeve 1, the end of the first rod segment 421 is fixedly connected to the head end of the second rod segment 422, the angle between the axis of the first rod segment 421 and the axis of the second rod segment 422 is an obtuse angle, the end of the third connecting plate 41 is rotatably connected to the end of the first rod segment 421; the end of the second rod segment 422 is provided with a mounting portion; when the connecting mechanism 4 is in the expanded position, the first rod segment 421 is pressed against the edge of the through hole 14.

[0042] Specifically, when the connecting mechanism 4 is in the unfolded position, the first rod segment 421 is pressed against the edge of the through hole 14, and the extension direction of the second rod segment 422 is substantially perpendicular to the axis of the support sleeve 1. At this time, the end of the second rod segment 422 is farthest from the support sleeve 1, that is, the mounting portion is farthest from the support sleeve 1. With this arrangement, the detection range can be expanded.

[0043] Of course, the connecting mechanism 4 may also be any other structural form that can achieve the above technical effects, and the present invention does not limit this.

[0044] On the other hand, the present invention provides a flue gas flow rate monitoring device, which includes a plurality of flue gas flow rate monitors and a probe fixing device of any of the above embodiments, wherein the plurality of flue gas flow rate monitors correspond one to one with the connection mechanisms 4 of the plurality of probe fixing devices. The flue gas flow rate monitor includes a pressure meter and a probe, wherein the probe includes two pitot tubes 5, and the two pitot tubes 5 are installed on the mounting portion of the corresponding connection mechanism 4, wherein the air inlet of one pitot tube 5 is downward, and the air inlet of the other pitot tube 5 is upward, and the air outlets of the two pitot tubes 5 are connected to the pressure meter through a hose, and the hose passes through the mounting channel, and the pressure meter is located outside the support sleeve 1.

[0045] Specifically, the pressure meter detects the flue gas flow rate at the corresponding position in the flue gas channel 61 through two pitot tubes 5. The pressure meter is arranged outside the chimney 6, and can measure the detection result. Therefore, the detection personnel can determine the flue gas flow rate by recording the values ​​of these pressure meters. Of course, those skilled in the art can easily understand the operating principle of the pitot tube 5, and the operating principle of the pitot tube 5 is not described in detail in the present invention.

[0046] In this embodiment, the flue gas flow rate monitoring device adopts the probe fixing device of any of the above embodiments, so the flue gas flow rate monitoring device can also achieve the above technical effects.

[0047] In some embodiments, the flue gas flow rate monitor may also be a thermal flow meter, the probe of the thermal flow meter is mounted on the mounting portion of the connecting mechanism 4, and the flow rate measuring device of the thermal flow meter is arranged outside the chimney 6, and can detect the result for measurement. The cable between the flow rate measuring device and the probe is arranged in the installation channel.

[0048] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A probe fixing device, characterized in that: It comprises a supporting sleeve (1), a push-pull mechanism (2), a transmission mechanism (3) and a plurality of connecting mechanisms (4); The support sleeve (1) can be inserted into the peripheral wall of the chimney, the support sleeve (1) is provided with a mounting channel extending along its axial direction and capable of placing a pipeline of a flue gas flow rate monitor, the connecting mechanism (4) is rotatably mounted on the side of the support sleeve (1), all the connecting mechanisms (4) are distributed at intervals along the axial direction of the support sleeve (1), and the connecting mechanism (4) has a mounting portion capable of mounting a probe of the flue gas flow rate monitor; The transmission mechanism (3) is arranged in the installation channel of the support sleeve (1), and the push-pull mechanism (2) is installed at the head end of the support sleeve (1); the push-pull mechanism (2) drives the connecting mechanism (4) to rotate through the transmission mechanism (3), so that the connecting mechanism (4) can rotate between a stowed position and an extended position; When the connecting mechanism (4) is located at the stowed position, the mounting portion of the connecting mechanism (4) is in contact with the side of the supporting sleeve (1); when the connecting mechanism (4) is located at the deployed position, the mounting portion of the connecting mechanism (4) is spaced apart from the side of the supporting sleeve (1).

2. The probe fixing device according to claim 1, characterized in that: The support sleeve (1) is configured as a square tube, a support plate (11) is mounted on the head end of the support sleeve (1), the support plate (11) is located below the transmission mechanism (3) and the two are spaced apart, and the push-pull mechanism (2) is fixedly mounted on the top surface of the support plate (11).

3. The probe fixing device according to claim 2, characterized in that: The outer fixed sleeve of the support sleeve (1) is provided with a fixed sleeve (12), the head end of the fixed sleeve (12) is fixedly mounted with a flange (13), the head end of the support sleeve (1) passes through the flange (13), the support plate (11) is mounted on a side of the flange (13) facing away from the fixed sleeve (12), the flange (13) is provided with a plurality of long holes, all of which are spaced apart and distributed around the support sleeve (1); When the connection mechanism (4) is located at the retracted position, the projection of the flange (13) can cover the projection of the connection mechanism (4) when projected in the axial direction of the support sleeve (1).

4. The probe fixing device according to claim 2, characterized in that: The push-pull mechanism (2) further comprises a bottom plate (21), a connecting seat (22), a guide cylinder (23), a first connecting plate (24), a handle (25), a connecting column (26) and two second connecting plates (27); The bottom plate (21) is fixedly mounted on the top surface of the support plate (11), and the bottom plate (21) and the head end of the support sleeve (1) are spaced apart in the axial direction of the support sleeve (1); the connecting seat (22) and the guide cylinder (23) are fixedly mounted on the top surface of the bottom plate (21), and the connecting seat (22) and the guide cylinder (23) are spaced apart in the axial direction of the support sleeve (1); the head end of the first connecting plate (24) is rotatably connected to the connecting seat (22); and the handle (24) is The end of the second connecting plate (27) is rotatably connected to the end of the first connecting plate (24), the end of the second connecting plate (27) is rotatably connected to the end of the connecting column (26), the first connecting plate (24) is located between the two second connecting plates (27), and the end of the connecting column (26) is fixedly connected to the transmission mechanism (3).

5. The probe fixing device according to claim 4, characterized in that: The guide cylinder (23) is provided with a threaded hole, in which a positioning bolt (28) is threadedly installed, and the end of the screw rod of the positioning bolt (28) is capable of squeezing the connecting column (26).

6. The probe fixing device according to claim 4, characterized in that: The transmission mechanism (3) comprises a sliding rod (31) and a plurality of connecting blocks (32); the sliding rod (31) is arranged in the installation channel of the support sleeve (1), and the axis of the sliding rod (31) coincides with the axis of the support sleeve (1); the head end of the sliding rod (31) is fixedly connected to the end of the connecting column (26); the connecting block (32) is arranged on the outside of the sliding rod (31), and the connecting block (32) is fixedly connected to the sliding rod (31); all the connecting blocks (32) are distributed at intervals along the axial direction of the sliding rod (31), and all the connecting mechanisms (4) are rotatably connected to all the connecting blocks (32) in a one-to-one correspondence.

7. The probe fixing device according to claim 6, characterized in that: The transmission mechanism (3) further comprises a guide sleeve (33), wherein the guide sleeve (33) is located in the installation channel and is fixedly connected to the head end of the support sleeve (1), the slide rod (31) movably passes through the guide sleeve (33), and the axis of the slide rod (31) coincides with the axis of the guide sleeve (33).

8. The probe fixing device according to claim 6, characterized in that: All the connecting mechanisms (4) include a plurality of first connecting mechanisms and a plurality of second connecting mechanisms, wherein the first connecting mechanisms and the second connecting mechanisms are respectively located on both sides of the supporting sleeve (1) in the width direction thereof; and the first connecting mechanisms (4) and the second connecting mechanisms (4) are alternately distributed in the axial direction of the supporting sleeve (1); And / or, the tube wall of the support sleeve (1) is provided with a plurality of spaced-apart through-holes (14), all of the through-holes (14) correspond to all of the connection mechanisms (4) one by one; the connection mechanism (4) comprises a third connection plate (41) and a rotating rod (42), the third connection plate (41) movably passes through the corresponding through-hole (14), the head end of the third connection plate (41) is rotationally connected to the corresponding connection block (32), the tail end of the third connection plate (41) is rotationally connected to the middle part of the rotating rod (42), the head end of the rotating rod (42) is rotationally connected to the tube wall of the support sleeve (1); the tail end of the rotating rod (42) is provided with the mounting portion; when the connection mechanism (4) is located in the unfolded position, the rotating rod (42) is pressed against the edge of the through-hole (14).

9. The probe fixing device according to claim 8, characterized in that: The rotating rod (42) comprises a first rod segment (421) and a second rod segment (422); the head end of the first rod segment (421) is rotatably connected to the tube wall of the supporting sleeve (1); the end of the first rod segment (421) is fixedly connected to the head end of the second rod segment (422); the angle between the axis of the first rod segment (421) and the axis of the second rod segment (422) is an obtuse angle; the end of the third connecting plate (41) is rotatably connected to the end of the first rod segment (421); the end of the second rod segment (422) is provided with the mounting portion; when the connecting mechanism (4) is located at the unfolded position, the first rod segment (421) is pressed against the edge of the through hole (14).

10. A flue gas velocity monitoring device, characterized in that: It comprises a plurality of flue gas flow rate monitors and the probe fixing device according to any one of claims 1 to 9, wherein the plurality of flue gas flow rate monitors correspond one to one with the connection mechanisms (4) of the plurality of probe fixing devices respectively; The flue gas flow rate monitor comprises a pressure meter and a probe, wherein the probe comprises two Pitot tubes (5), wherein the two Pitot tubes (5) are mounted on the mounting parts of the corresponding connecting mechanisms (4), wherein the air inlet of one of the Pitot tubes (5) faces downwards, and the air inlet of the other of the Pitot tubes (5) faces upwards, and the air outlets of the two Pitot tubes (5) are connected to the pressure meter via a hose, wherein the hose passes through the mounting channel, and the pressure meter is located outside the supporting sleeve (1).

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