Ultrasonic flue gas flow measuring device

Abstract

An ultrasonic flue gas flow measuring device comprises a sleeving seat, connecting plates, a screw, screwing sleeves and a plurality of ultrasonic transmitting assemblies, one side face of the sleeving seat is of a cambered surface concave structure, the other side of the sleeving seat is of a plane structure, the side walls of the two sides of the cambered surface concave structure located on the sleeving seat are fixedly connected with the connecting plates respectively, the screwing sleeves are arranged on the connecting plates, and the ultrasonic transmitting assemblies are arranged on the screw. The two sleeving bases are arranged in a mirror symmetry mode, the connecting plates on the same sides of the sleeving bases are connected with one screw in a penetrating mode, each screw is in threaded connection with the two threaded sleeves on the same side, and the two screws synchronously rotate relative to the threaded sleeves and are used for driving the two sleeving bases to be close to or away from each other along the screws. The upper end and the lower end of each sleeving base are detachably provided with ultrasonic transmitting assemblies used for measuring the smoke flow. Through the arrangement of the cambered surface concave structure on one side surface of the sleeving seat and the plane structure on the other side surface, the adaptability of the product is wide; the distance between the sleeving seats can be adjusted according to flues of different sizes, and the ultrasonic transmitting assembly can be conveniently disassembled, assembled and maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and particularly relates to an ultrasonic flue gas flow measuring device. Background Art

[0002] Coal-fired power plants are the largest centralized sources of CO2 emissions. The CO2 emission data of coal-fired power plants is an important basis for evaluating the current status of carbon emissions in the thermal power industry, assessing the effectiveness of carbon emission reduction governance, and formulating decisions on carbon tax collection and carbon sink trading. In order to accurately measure carbon emissions, ultrasonic flue gas flow measuring devices have emerged on the market; for example, an existing through-type ultrasonic flue gas velocity meter includes a flue. On one side of the outer wall of the flue, a first mounting seat and a third mounting seat are provided, and on the other side of the flue, a second mounting seat and a fourth mounting seat are provided. A measuring device is fixedly installed on the first mounting seat. The measuring device includes a first ultrasonic transmitter, a first protective shell, a first ultrasonic receiver, a second protective shell, a second ultrasonic transmitter, a third protective shell, a second ultrasonic receiver, and a fourth protective shell. The first ultrasonic transmitter is fixedly installed on the first mounting seat. The first protective shell is fixedly installed on the first mounting seat and sleeved on the first ultrasonic transmitter. The first ultrasonic receiver is fixedly installed on the second mounting seat. The second protective shell is fixedly installed on the second mounting seat and sleeved on the first ultrasonic receiver. The second ultrasonic transmitter is fixedly installed on the third mounting seat. The third protective shell is fixedly installed on the third mounting seat and sleeved on the second ultrasonic transmitter. The second ultrasonic receiver is fixedly installed on the fourth mounting seat. The fourth protective shell is fixedly installed on the fourth mounting seat and sleeved on the second ultrasonic receiver. It has the following advantages: The velocity of the fluid can be obtained according to the time difference of the ultrasonic waves received by the first ultrasonic receiver and the second ultrasonic receiver, and the instantaneous flow rate can be obtained according to the cross-sectional area of the flow path, and the measurement accuracy is high.

[0003] However, this device still has the following defects: This flue gas velocity meter is only suitable for installation on circular flues, and has the defect of poor adaptability. Therefore, there is an urgent need for an ultrasonic flue gas flow measuring device to solve the problem of poor adaptability of the existing flue gas velocity meters. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides an ultrasonic flue gas flow measuring device to solve the problem of poor adaptability of the existing flue gas velocity meters.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An ultrasonic flue gas flow measurement device, characterized in that it includes a socket seat, a connecting plate, a screw rod, a screwed sleeve and several ultrasonic emission components. One side of the socket seat is an arc-shaped concave structure, and the opposite side is a flat structure. Connecting plates are respectively fixedly connected to the side walls on both sides of the arc-shaped concave structure of the socket seat. Screwed sleeves are provided on the connecting plates. Two socket seats form a group, and at least one group of the two socket seats is arranged symmetrically in a mirror image. The connecting plates on the same side of the two socket seats are respectively penetrated by one of the screw rods, and each screw rod is threadedly connected to the screwed sleeves on the same side. The two screw rods rotate synchronously relative to the screwed sleeves to drive the two socket seats to approach or move away along the screw rod. Ultrasonic emission components for measuring the flue gas flow are respectively detachably provided at the upper and lower ends of each socket seat.

[0006] To optimize the above technical solution, the specific measures taken also include: Further, slots are provided at both the upper and lower ends of the socket seat, and plug rod fixing mechanisms are provided in the slots. Plug rods are connected to the ultrasonic emission components, and the ultrasonic emission components are detachably installed in the plug rod fixing mechanisms through the plug rods. The plug rod fixing mechanisms are used to clamp the plug rods.

[0007] Further, fixing grooves are provided on the plug rods. The plug rod fixing mechanism includes guide rods, stop blocks, sliding blocks, springs and fixing blocks. Two guide rods are symmetrically and fixedly installed in the slot, and a spacing for the plug rod to be inserted is reserved between the two guide rods. Sliding blocks are respectively slidably installed on the guide rods. Fixing blocks that can be inserted into the fixing grooves are respectively provided on the opposite sides of the two sliding blocks. Springs are respectively connected between the opposite sides of the two sliding blocks and the side walls of the adjacent slots. The springs are used to drive the sliding blocks to drive the fixing blocks to insert into the fixing grooves.

[0008] Further, stop blocks are fixedly installed at the ends of the guide rods, and a spacing for only the plug rod to be inserted is reserved between the stop blocks of the two guide rods.

[0009] Further, a sliding block limiting mechanism is also included. The end of the sliding block extends out of the slot. The sliding block limiting mechanism is correspondingly installed on the socket seat for the plug rod fixing mechanism to connect the end of the sliding block extending out of the slot and limit the movement of the sliding block.

[0010] Further, the sliding block limiting mechanism includes a support bar and a limit bolt. The support bar is fixedly installed on the end face of the socket seat corresponding to the sliding block, and a threaded hole is provided on the support bar. A threaded hole is provided at the end of the sliding block extending out of the slot. The limit bolt is used to threadedly connect the threaded hole of the sliding block and the threaded hole of the support bar respectively.

[0011] Furthermore, it further includes a screw sleeve anti - detachment mechanism. The screw sleeve anti - detachment mechanism is installed on the outer side of the screw sleeve. The screw sleeve anti - detachment mechanism includes a disc, an anti - detachment bolt and an additional block. The disc is installed on the outer side of the screw sleeve. An additional block is provided on the side of the connecting plate away from the screw sleeve. A screw groove that fits the anti - detachment bolt is provided inside the additional block. Openings corresponding to the anti - detachment bolt are provided on the side walls of the connecting plate and the disc. The end of the anti - detachment bolt passes through the openings of the disc and the connecting plate and is screwed into the additional block.

[0012] Furthermore, the disc is installed on the outer side of the screw sleeve through a bearing, and the screw sleeve can rotate relative to the disc.

[0013] Furthermore, a first anti - slip pad is adhesively bonded to the surface of the arc - concave structure of the socket seat, and a second anti - slip pad is adhesively bonded to the surface of the flat structure of the socket seat.

[0014] Furthermore, the ultrasonic emission assembly includes a first ultrasonic emission assembly, a second ultrasonic emission assembly, a third ultrasonic reception assembly and a fourth ultrasonic reception assembly. The first ultrasonic emission assembly includes a first mounting seat, a first protective shell and a first ultrasonic emitter. The first protective shell is sleeved on the first ultrasonic emitter, and the first ultrasonic emitter is fixedly installed on the first mounting seat. The first mounting seat is installed at the upper end of the socket seat on one side. The second ultrasonic emission assembly includes a second mounting seat, a second protective shell and a second ultrasonic emitter. The second protective shell is sleeved on the second ultrasonic emitter, and the second ultrasonic emitter is fixedly installed on the second mounting seat. The second mounting seat is installed at the lower end of the socket seat on the same side. The third ultrasonic reception assembly includes a third mounting seat, a third protective shell and a third ultrasonic receiver. The third protective shell is sleeved on the third ultrasonic receiver, and the third ultrasonic receiver is fixedly installed on the third mounting seat. The third mounting seat is installed at the upper end of the socket seat on the other side. The second ultrasonic reception assembly includes a fourth mounting seat, a fourth protective shell and a fourth ultrasonic receiver. The fourth protective shell is sleeved on the fourth ultrasonic receiver, and the fourth ultrasonic receiver is fixedly installed on the fourth mounting seat. The fourth mounting seat is installed at the lower end of the socket seat on the same side.

[0015] The beneficial effects of the present invention are: In the present invention, by setting one side of the socket seat as an arc-shaped concave structure and the opposite side as a flat structure, it can be installed not only on a circular flue but also on a square flue, making the adaptability of this product wide; through the cooperative setting of the connecting plate, screw rod, and screw socket, the screw rod or the screw socket can be rotated synchronously as needed to drive the two socket seats in the same group to move closer or farther away, so as to adjust the distance between the socket seats according to flues of different sizes; through the setting of a detachable ultrasonic emission component, the convenience of disassembly, repair, and maintenance of the device can be increased.

[0016] In the present invention, through the setting of the insertion rod, the insertion rod fixing mechanism, and the sliding block limiting mechanism, when the ultrasonic emission component fails, any one of the faults can be easily disassembled, repaired, or replaced; through the setting of the screw socket anti-detachment mechanism, the screw socket is not likely to fall off, which can improve the stability of this product after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an ultrasonic flue gas flow measurement device proposed by the present invention; Figure 2 is a side view of the overall structure of an ultrasonic flue gas flow measurement device proposed by the present invention; Figure 3 is a side view of the structure of the insertion rod fixing mechanism of an ultrasonic flue gas flow measurement device proposed by the present invention; Figure 4 is a schematic diagram of the structure of the sliding block limiting mechanism of an ultrasonic flue gas flow measurement device proposed by the present invention; Figure 5 is a schematic diagram of the structure of the screw socket anti-detachment mechanism of an ultrasonic flue gas flow measurement device proposed by the present invention.

[0018] Reference numerals: 1, socket seat; 2, connecting plate; 3, screw rod; 4, screw socket; 5, first ultrasonic emission component; 6, second ultrasonic emission component; 7, first ultrasonic reception component; 8, second ultrasonic reception component; 9, insertion rod; 10, insertion rod fixing mechanism; 11, guide rod; 12, stop block; 13, sliding block; 14, spring; 15, fixed block; 16, sliding block limiting mechanism; 17, support bar; 18, limit bolt; 19, screw socket anti-detachment mechanism; 20, disc; 21, anti-detachment bolt; 22, additional block; 23, direction adjustment mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Now, the present invention will be further described in detail with reference to the accompanying drawings.

[0020] As shown in the attached Figure 1 and the attached Figure 2As shown in the figure, an ultrasonic flue gas flow measurement device according to an embodiment of the present invention includes a socket 1, a connecting plate 2, a screw 3, a screwed sleeve 4, and several ultrasonic transmitting components. One side surface of the socket 1 is an arc-shaped concave structure, and the opposite side is a flat structure. A connecting plate 2 is fixedly connected to the side walls on both sides of the arc-shaped concave structure of the socket 1. A screwed sleeve 4 is provided on each connecting plate 2, and the screwed sleeve 4 abuts against the side surface of the connecting plate 2. Two sockets 1 form a group, and at least one group of the two sockets 1 is arranged symmetrically in a mirror image. The connecting plates 2 on the same side of the two sockets 1 are respectively penetrated by a screw 3. A through hole corresponding to the screw 3 is provided on the side surface of the connecting plate 2. The screw 3 passes through the through hole. The inner wall of the screwed sleeve 4 is provided with an internal thread matching the screw 3, which facilitates the screwing connection between the screwed sleeve 4 and the screw 3. Each screw 3 is respectively threadedly connected to the two screwed sleeves 4 on the same side. The two screws 3 rotate synchronously relative to the screwed sleeves 4 to drive the two sockets 1 to approach or move away along the screw 3. Ultrasonic transmitting components for measuring the flue gas flow are respectively detachably provided at the upper and lower ends of each socket 1.

[0021] In the present invention, through the setting that one side surface of the socket 1 is an arc-shaped concave structure and the opposite side is a flat structure, it can be installed not only on a circular flue but also on a square flue, making the adaptability of this product wide; through the cooperative setting of the connecting plate 2, the screw 3, and the screwed sleeve 4, the screw 3 or the screwed sleeve 4 can be rotated synchronously as required to drive the two sockets 1 in the same group to move closer or farther away, so as to adjust the distance between the sockets 1 according to flues of different sizes; through the setting of the detachable ultrasonic transmitting components, the convenience of device disassembly, installation, and maintenance can be increased.

[0022] In another specific embodiment based on the above, slots are provided at both the upper and lower ends of the socket 1, and a plug rod fixing mechanism 10 is provided in each slot. A plug rod 9 is connected to each ultrasonic transmitting component, and the ultrasonic transmitting component is detachably installed in the plug rod fixing mechanism 10 through the plug rod 9. The plug rod fixing mechanism 10 is used to clamp the plug rod 9.

[0023] As shown in the atta Figure 3 ched figure, in a further specific embodiment based on the above, a fixing groove is provided on the plug rod 9. The plug rod fixing mechanism 10 includes a guide rod 11, a stop block 12, a sliding block 13, a spring 14, and a fixing block 15. Two guide rods 11 are symmetrically and fixedly installed in the slot. A distance for inserting the plug rod 9 is reserved between the two guide rods 11. A sliding through hole corresponding to the guide rod 11 is provided on the side surface of the sliding block 13, and the sliding blocks 13 are respectively slidably installed on the guide rods 11. Fixing blocks 15 that can be inserted into the fixing groove are respectively provided on one side of the two sliding blocks 13 facing each other. Springs 14 are respectively connected between the other sides of the two sliding blocks 13 and the side walls of the adjacent slots close to them. The spring 14 is used to drive the sliding block 13 to drive the fixing block 15 to insert into the fixing groove.

[0024] Therefore, during use, the two sliding blocks 13 can be driven to move away from each other, and then the insertion rod 9 is correspondingly inserted between the two guide rods 11. Subsequently, the two sliding blocks 13 are released. Under the action of the spring 14, the sliding blocks 13 slide along the guide rods 11 until the fixing blocks 15 thereon are inserted into the fixing grooves of the insertion rod 9, thereby completing the convenient installation of the ultrasonic emission assembly and the insertion rod 9.

[0025] Among them, in a further specific embodiment based on the above, a stop block 12 is fixedly installed at the end of the guide rod 11. A spacing for only the insertion rod 9 to be inserted is reserved between the stop blocks 12 of the two guide rods 11. Among them, the diameter of the stop block 12 is greater than the diameter of the guide rod 11. In this way, it can not only prevent the sliding block 13 from slipping off the guide rod 11, but also use the stop blocks 12 on both sides to limit and clamp the insertion rod 9.

[0026] In another specific embodiment based on the above, a sliding block limiting mechanism 16 is further included. The end of the sliding block 13 extends out of the slot. The sliding block limiting mechanism 16 is correspondingly installed on the socket 1 for the insertion rod fixing mechanism 10, and is used to connect the end of the sliding block 13 extending out of the slot and limit the movement of the sliding block 13. In this way, the sliding block limiting mechanism 16 can be used as needed to keep the sliding block 13 in a state where the fixing block 15 thereon is separated from or inserted into the insertion rod 9.

[0027] As shown in the attached Figure 4 Among them, in a further specific embodiment based on the above, the sliding block limiting mechanism 16 includes a support bar 17 and a limit bolt 18. The support bar 17 is fixedly installed on the end face of the socket 1 corresponding to the sliding block 13 respectively, and a threaded hole is opened on the support bar 17. A threaded hole is opened at the end of the sliding block 13 extending out of the slot, which facilitates the screwing of the limit bolt 18. The limit bolt 18 is used to threadedly connect the threaded holes of the sliding block 13 and the support bar 17 respectively. In this way, after the sliding block 13 is moved to a specified position as needed, the corresponding support bar 17 can be connected through the limit bolt 18, so as to keep the sliding block 13 in a state where the fixing block 15 thereon is separated from or inserted into the insertion rod 9.

[0028] Among them, the insertion rod 9 is provided with a direction adjusting mechanism 23 that can rotate 360° horizontally in the middle position, and is connected to the ultrasonic emission assembly through the direction adjusting mechanism 23, and is used to rotate and adjust the installation direction of the ultrasonic emission assembly when installed in a rectangular flue and a circular flue.

[0029] As shown in the attached Figure 5As shown, in another specific embodiment based on the above, it further includes a screw sleeve anti - detachment mechanism 19. The screw sleeve anti - detachment mechanism 19 is installed on the outside of the screw sleeve 4. The screw sleeve anti - detachment mechanism 19 includes a disc 20, an anti - detachment bolt 21, and an additional block 22. The disc 20 is installed on the outside of the screw sleeve 4. An additional block 22 is provided on the side of the connecting plate 2 away from the screw sleeve 4. A screw groove that fits the anti - detachment bolt 21 is provided inside the additional block 22, facilitating the screwing of the end of the anti - detachment bolt 21. Openings corresponding to the anti - detachment bolt 21 are provided on the side walls of both the connecting plate 2 and the disc 20. The end of the anti - detachment bolt 21 passes through the openings of the disc 20 and the connecting plate 2 and is screwed into the additional block 22. In this way, the reliability of the structural connection can be increased, and disassembly and assembly are facilitated.

[0030] Among them, in a further specific embodiment based on the above, the disc 20 is installed on the outside of the screw sleeve 4 through a bearing, and the screw sleeve 4 can rotate relative to the disc 20. In this way, during use, the corresponding screw sleeve 4 can be rotated as needed to drive and adjust the distance between the two socket seats 1.

[0031] In another specific embodiment based on the above, a first anti - slip pad is bonded to the surface of the arc - shaped concave structure of the socket seat 1, and a second anti - slip pad is bonded to the surface of the planar structure of the socket seat 1. In this way, the stability during installation and use can be increased.

[0032] In another specific embodiment based on the above, the ultrasonic emission assembly includes a first ultrasonic emission assembly 5, a second ultrasonic emission assembly 6, a third ultrasonic reception assembly 7, and a fourth ultrasonic reception assembly 8, all of which are respectively inserted into the socket seat 1; the first ultrasonic emission assembly 5 includes a first mounting seat, a first protective shell, and a first ultrasonic emitter. The first protective shell is sleeved on the first ultrasonic emitter, and the first ultrasonic emitter is fixedly installed on the first mounting seat. The first mounting seat is installed at the upper end of the socket seat 1 on one side. The second ultrasonic emission assembly 6 includes a second mounting seat, a second protective shell, and a second ultrasonic emitter. The second protective shell is sleeved on the second ultrasonic emitter, and the second ultrasonic emitter is fixedly installed on the second mounting seat. The second mounting seat is installed at the lower end of the socket seat 1 on the same side. The third ultrasonic reception assembly 7 includes a third mounting seat, a third protective shell, and a third ultrasonic receiver. The third protective shell is sleeved on the third ultrasonic receiver, and the third ultrasonic receiver is fixedly installed on the third mounting seat. The third mounting seat is installed at the upper end of the socket seat 1 on the other side. The second ultrasonic reception assembly 8 includes a fourth mounting seat, a fourth protective shell, and a fourth ultrasonic receiver. The fourth protective shell is sleeved on the fourth ultrasonic receiver, and the fourth ultrasonic receiver is fixedly installed on the fourth mounting seat. The fourth mounting seat is installed at the lower end of the socket seat 1 on the same side.

[0033] In this solution, the above-mentioned first ultrasonic transmitting component 5, second ultrasonic transmitting component 6, third ultrasonic receiving component 7, and fourth ultrasonic receiving component 8 can all adopt existing technologies.

[0034] When the device of the present invention is in use: when encountering a circular flue, the side with the arc-shaped concave structure of the socket 1 is attached to the circular flue, and the screw 3 is passed through the two connecting plates 2, and the threaded sleeve 4 is screwed on the outside of the screw 3, so that the product can be installed on the circular flue. When encountering a square flue, the side with the planar structure of the socket 1 is attached to the square flue, and the screw 3 is passed through the two connecting plates 2, and the threaded sleeve 4 is screwed on the outside of the screw 3; then adjust the installation directions of the first ultrasonic transmitting component 5, second ultrasonic transmitting component 6, third ultrasonic receiving component 7, and fourth ultrasonic receiving component 8, so that the product can also be installed on the square flue, making the adaptability of the product wide.

[0035] Subsequently, the first ultrasonic transmitter of the first ultrasonic transmitting component 5 and the second ultrasonic transmitter of the second ultrasonic transmitting component 6 are started simultaneously. When the ultrasonic wave advances in the fluid flow direction, its speed becomes faster. When the ultrasonic wave advances against the fluid flow direction, its speed becomes slower. The velocity of the fluid can be obtained according to the time difference of the ultrasonic waves received by the third ultrasonic receiver of the third ultrasonic receiving component 7 and the fourth ultrasonic receiver of the fourth ultrasonic receiving component 8, and then the instantaneous flow rate can be obtained according to the cross-sectional area of the flow path. Multi-point measurement makes the measurement accuracy high.

[0036] When the first ultrasonic transmitting component 5 or the second ultrasonic transmitting component 6 or the third ultrasonic receiving component 7 or the fourth ultrasonic receiving component 8 fails, the sliding block 13 of the sliding plug fixing mechanism 10 will squeeze the spring 14, so that the end of the fixing block 15 can be removed from the fixing groove of the plug 9, and the sliding block 13 corresponds to the support bar 17 of the sliding block limiting mechanism 16. Then rotate the limit bolt 18 so that the end of the limit bolt 18 is screwed into the internal threaded sleeve of the sliding block 13, which can keep the spring 14 in a squeezed state. At this time, the plug 9 can be removed, thus facilitating the repair or replacement of the faulty first ultrasonic transmitting component 5 or the second ultrasonic transmitting component 6 or the third ultrasonic receiving component 7 or the fourth ultrasonic receiving component 8. At the same time, the end of the anti-loosening bolt 21 of the threaded sleeve anti-loosening mechanism 19 is passed through the disc 20 and the connecting plate 2 and screwed into the additional block 22, so that the threaded sleeve 4 is not likely to fall off, which can improve the stability of the product after installation; it can also be set as needed to provide a support bar 17 for holding the fixing block 15 inserted into the sliding block 13 of the plug 9 after the plug 9 is installed, thereby increasing the stability of the plug 9 after installation.

[0037] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "rear" cited in the invention are only for the sake of clarity in narration, rather than to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0038] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. An ultrasonic flue gas flow measurement device, characterized in that: The invention comprises a socket (1), a connecting plate (2), a screw rod (3), a screw sleeve (4) and a plurality of ultrasonic emission components. One side of the socket (1) is a curved concave structure, and the other side opposite thereto is a flat structure. The side walls on both sides of the curved concave structure of the socket (1) are respectively fixedly connected with a connecting plate (2). The connecting plates (2) are each provided with a screw sleeve (4). Two sockets (1) form a group, and at least one group of two sockets (1) are arranged in mirror symmetry. The connecting plates (2) on the same side of the two sockets (1) are respectively penetrated by one of the screw rods (3). Each screw rod (3) is respectively threadedly connected to two screw sleeves (4) on the same side. The two screw rods (3) rotate synchronously relative to the screw sleeves (4) to drive the two sockets (1) to move closer to or farther away from each other along the screw rods (3). The upper and lower ends of each socket (1) are respectively provided with ultrasonic emission components for measuring the flue gas flow rate in a detachable manner.

2. The ultrasonic flue gas flow measurement device according to claim 1, characterized in that: The socket (1) is provided with slots at both upper and lower ends, and a plug rod fixing mechanism (10) is provided in each of the slots. The ultrasonic emitting assembly is connected to a plug rod (9), and the ultrasonic emitting assembly is detachably mounted in the plug rod fixing mechanism (10) via the plug rod (9). The plug rod fixing mechanism (10) is used to clamp the plug rod (9).

3. The ultrasonic flue gas flow measurement device according to claim 2, characterized in that: The insertion rod (9) is provided with a fixing groove, and the insertion rod fixing mechanism (10) comprises a guide rod (11), a stopper (12), a sliding block (13), a spring (14) and a fixing block (15). Two guide rods (11) are symmetrically fixedly installed in the slot, and a spacing for inserting the insertion rod (9) is reserved between the two guide rods (11). The sliding blocks (13) are slidably installed on the guide rods (11), and the two sliding blocks (13) are provided with fixing blocks (15) that can be plugged into the fixing groove on opposite sides. The two sliding blocks (13) are connected to springs (14) on opposite sides of the two sliding blocks and the adjacent slotted side walls, and the springs (14) are used to drive the sliding blocks (13) to drive the fixing blocks (15) to be inserted into the fixing groove.

4. The ultrasonic flue gas flow measurement device according to claim 3, characterized in that: A stopper (12) is also fixedly mounted on the end of the guide rod (11), and a space is reserved between the stoppers (12) of the two guide rods (11) for the insertion of the insertion rod (9).

5. The ultrasonic flue gas flow measurement device according to claim 3, characterized in that: It also includes a sliding block limiting mechanism (16), wherein the end of the sliding block (13) extends out of the slot, and the sliding block limiting mechanism (16) is mounted on the sleeve seat (1) corresponding to the plug rod fixing mechanism (10), and is used to connect the end of the sliding block (13) extending out of the slot and limit the movement of the sliding block (13).

6. The ultrasonic flue gas flow measurement device according to claim 5, characterized in that: The sliding block limiting mechanism (16) comprises a support bar (17) and a limiting bolt (18); the support bars (17) are respectively fixedly mounted on the end surface of the sleeve seat (1) corresponding to the sliding block (13); a threaded hole is formed on the support bar (17); an end portion of the sliding block (13) extending out of the slot is provided with a threaded hole; the limiting bolt (18) is used to be threadedly connected to the threaded hole of the sliding block (13) and the threaded hole of the support bar (17).

7. The ultrasonic flue gas flow measurement device according to claim 1, characterized in that: The invention also comprises a screw sleeve anti-slipping mechanism (19), the screw sleeve anti-slipping mechanism (19) being mounted on the outer side of the screw sleeve (4), the screw sleeve anti-slipping mechanism (19) comprising a disc (20), an anti-slipping bolt (21) and an additional block (22), the disc (20) being mounted on the outer side of the screw sleeve (4), the additional block (22) being provided on a side of the connecting plate (2) away from the screw sleeve (4), the additional block (22) being provided with a screw groove matching the anti-slipping bolt (21) inside, the side walls of the connecting plate (2) and the disc (20) being provided with openings corresponding to the anti-slipping bolt (21), the end of the anti-slipping bolt (21) passing through the openings of the disc (20) and the connecting plate (2) and being screwed into the additional block (22).

8. The ultrasonic flue gas flow measurement device according to claim 7, characterized in that: The disc (20) is mounted on the outside of the threaded sleeve (4) via a bearing, and the threaded sleeve (4) can rotate relative to the disc (20).

9. The ultrasonic flue gas flow measurement device according to claim 1, characterized in that: A first anti-skid pad is bonded to the surface of the arc-surface concave structure of the sleeve seat (1), and a second anti-skid pad is bonded to the surface of the plane structure of the sleeve seat (1).

10. The ultrasonic flue gas flow measurement device according to claim 1, characterized in that: The ultrasonic transmitting assembly comprises a first ultrasonic transmitting assembly (5), a second ultrasonic transmitting assembly (6), a third ultrasonic receiving assembly (7) and a fourth ultrasonic receiving assembly (8); the first ultrasonic transmitting assembly (5) comprises a first mounting seat, a first protective shell and a first ultrasonic transmitter; the first protective shell is sleeved on the first ultrasonic transmitter; the first ultrasonic transmitter is fixedly mounted on the first mounting seat; the first mounting seat is mounted on the upper end of the sleeve seat (1) on one side; the second ultrasonic transmitting assembly (6) comprises a second mounting seat, a second protective shell and a second ultrasonic transmitter; the second protective shell is sleeved on the second ultrasonic transmitter; the second ultrasonic transmitter is fixedly mounted on the first mounting seat; The second ultrasonic receiving assembly (8) comprises a third mounting seat, a third protective shell and a third ultrasonic receiver, the third protective shell is sleeved on the third ultrasonic receiver, the third ultrasonic receiver is fixedly mounted on the third mounting seat, and the third mounting seat is mounted on the upper end of the sleeve seat (1) on the other side; the second ultrasonic receiving assembly (8) comprises a fourth mounting seat, a fourth protective shell and a fourth ultrasonic receiver, the fourth protective shell is sleeved on the fourth ultrasonic receiver, the fourth ultrasonic receiver is fixedly mounted on the fourth mounting seat, and the fourth mounting seat is mounted on the lower end of the sleeve seat (1) on the same side.

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