Smoke flow rate and flow velocity comparison device capable of adjusting smoke flow rate in translation mode and adjusting method

Abstract

The invention relates to the technical field of smoke adjustment, in particular to a smoke flow and flow velocity comparison device capable of adjusting smoke in a translation mode and an adjusting method.The smoke flow and flow velocity comparison device comprises a smoke outlet plate arranged at the front end of a pipeline and an air outlet formed in the smoke outlet plate and further comprises a pitot tube, a driving mechanism, a shielding plate and an adjusting mechanism; the driving mechanism is installed at the pitot tube, the shielding plate is installed above the smoke outlet plate, the adjusting mechanism is located on one side of the shielding plate, the pitot tube detects and transmits the air volume to the driving mechanism, and the smoke discharging speed is monitored in real time through the pitot tube method. And different circulation paths are formed when the flue gas is initially discharged and excessive in discharge capacity through separate cavity transmission, so that the discharge capacity of the flue gas is reduced in a manner of prolonging the flow paths of the flue gas.

Description

Technical Field

[0001] The invention relates to the technical field of smoke regulation, in particular to a smoke flow rate comparison device capable of translationally regulating the flow rate of smoke and a regulation method. Background Art

[0002] The translatable and adjustable smoke flow and velocity comparison device is a device specially designed to monitor and adjust the smoke flow and velocity. It is usually equipped with a translation adjustment mechanism, which can adjust the position of the detection point as needed, so as to achieve accurate comparison of the smoke flow and velocity at different positions.

[0003] During the adjustment process, if the flue gas exceeds the measurement threshold, the translation mechanism will be used to adjust the precise movement of the detection point in the horizontal or vertical direction. Since the flow meter detection requires a certain reaction time, the detection data transmission also requires a certain amount of time. At this time, the flue gas will escape outward at an originally uneven flow rate. The measured data cannot reflect the actual situation of the flue gas changes, which will lead to inaccurate flow rate data and flue gas emission data, making it difficult to adjust the flue gas emissions in time, further causing environmental pollution.

[0004] In order to solve the above problems, a variety of solutions have been proposed in the prior art, such as accurately measuring the internal flue gas flow rate by changing the diameter of the flue gas outlet or by ultrasonic means. However, the data transmission time of the detection and the start-up time of the flue gas regulating equipment cannot be ignored. When a sudden flue gas emission abnormality occurs, it is difficult to adjust the flue gas emission in time according to the change in the flue gas flow rate.

[0005] Based on this, in order to solve the problem that it is difficult to adjust the smoke gas discharge volume in time to reduce pollution when the smoke gas discharge volume is abnormal due to the long data transmission time of smoke detection and the startup time of the smoke gas control equipment, the present invention designs a smoke flow rate comparison device and adjustment method that can be translated and adjusted. Summary of the invention

[0006] The present invention provides a translationally adjustable flue gas flow rate comparison device and adjustment method, which solves the problem that it is difficult to adjust the flue gas discharge volume in time to reduce pollution when the flue gas discharge volume is abnormal due to the long data transmission time of the flue gas detection and the startup time of the flue gas adjustment equipment. The flue gas emission speed is monitored in real time through the Pitot tube method, and different flow paths are formed in the initial stage and when the discharge volume is too large through the split-chamber transmission, thereby reducing the flue gas emission by extending the smoke flow path.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a translationally adjustable smoke flow rate comparison device, comprising a smoke outlet plate provided at the front end of a pipeline and an air outlet provided on the smoke outlet plate, and also comprising a Pitot tube, a driving mechanism, a baffle plate, and an adjusting mechanism. The Pitot tube is installed below the smoke outlet plate, the driving mechanism is installed at the Pitot tube, the baffle plate is installed above the smoke outlet plate, the adjusting mechanism is located on one side of the baffle plate, the Pitot tube detects and transmits the air volume to the driving mechanism, the driving mechanism drives the baffle plate to move unidirectionally by increasing the gas flow rate in the Pitot tube, the baffle plate drives the adjusting mechanism to reduce the outflow of smoke in the smoke flow duct, the Pitot tube can perform real-time detection of the smoke discharged upward through the air outlet, on the one hand, the detection result can be transmitted to the data platform, and on the other hand, it is used to start other devices, thereby forming timely internal adjustments.

[0009] Preferably, the number of the Pitot tubes is equal to the number of smoke outlets to be measured, sensors are provided at the bends of the Pitot tubes, and the number of baffles is equal to that of the Pitot tubes, thereby being able to adapt to real-time monitoring of multiple pipelines.

[0010] Preferably, the driving mechanism includes an air duct, a membrane box, an offset hole and a bellows; the air duct is connected to the end of the Pitot tube, the membrane box is installed above the smoke outlet plate, the membrane box is communicated with the other end of the air duct, the offset hole corresponds to the air outlet, and the bellows is installed between the offset hole and the air outlet. By extending the exhaust path of the smoke, the exhaust amount of the smoke per unit time is reduced, thereby achieving control of the smoke exhaust amount.

[0011] Preferably, the adjustment mechanism includes a lever, a connecting shaft, a telescopic rod, a fixed rod, a driving plate, a rotating handle and a misaligned plate, the lever is installed above the membrane box, the connecting shaft is installed below the other end of the lever, the telescopic rod is installed at the other end of the connecting shaft, the fixed rod is installed on the telescopic rod, the driving plate is hingedly installed at the bottom end of the telescopic rod, the rotating handle is installed at the driving plate, the misaligned plate is hingedly installed on the smoke outlet plate, and the misaligned plate is connected to the rotating handle, thereby achieving the blocking of smoke at the air outlet and the bellows, thereby reducing the emission of smoke.

[0012] Preferably, the bellows has a double-layer structure, and is divided into an inner tube and an outer tube. A deflection layer is distributed between the outer tube and the inner tube, providing a transmission cavity between the double layers of the bellows to reduce the emission of smoke per unit time.

[0013] Preferably, the diameter of the circle where the top of the membrane box is located is greater than the diameter of the circle where the bottom of the membrane box is located, so that the movement of the membrane box can easily drive the movement of the lever.

[0014] Preferably, an expansion layer is installed on the upper edge of the outer tube, and the initial position of the expansion layer is located on the inner folded surface of the outer tube. The cross-section of the expansion layer is the same as the cross-section of the gap in the outer tube. With the shielding of the expansion layer, the flow direction of the smoke can be changed, thereby extending the time from the smoke passing through the air outlet to complete discharge, thereby reducing the exhaust volume of the staggered holes per unit time.

[0015] Preferably, the volume value of the gap space between the outer tube and the inner tube is equal to twice the volume value of the space inside the inner tube, and an air guide plate is installed at the bottom between the outer tube and the inner tube; the edge thickness value of the air guide plate is greater than the center thickness value, and the projection surface of the air guide plate is equal to half of the bottom area of ​​the gap between the outer tube and the inner tube. First, it can block the gap between the outer tube and the inner tube. At this time, when the gas flows upward through the air outlet, it can limit the flow path of the gas, and then flow upward through the air outlet, and the air guide plate changes the air intake between the bellows. On the basis of reducing the air intake, it can extend the flow time of the gas in the bellows and reduce the emission per unit time; second, it can play a guiding role, and guide the wind from the free direction to the gap between the air outlet and the bottom of the bellows in a constrained manner, thereby reducing the resistance at the air outlet, so that the smoke can be discharged more smoothly.

[0016] Preferably, one end of the baffle layer is connected to the inner wall of the outer tube, and the other end of the baffle layer is connected to the side of the inner tube facing the outer tube. The baffle layer is folded, and the bottom of the folded surface at the edge of the baffle layer is shorter than the folded surface in the center. As the corrugated tube unfolds, the baffle layer gradually unfolds, thereby shielding the smoke entering the air outlet.

[0017] A method for adjusting a flue gas flow rate comparison device that can be adjusted in translation is applicable to any of the above-mentioned flue gas flow rate comparison devices that can be adjusted in translation, and comprises the following steps:

[0018] S1: When the flue gas is transmitted to the Pitot tube, part of the flue gas is absorbed into the Pitot tube through the Bernoulli principle, and the change of gas pressure is sensed by the sensor set in the Pitot tube. When the pressure does not change, the flue gas emission speed is normal and the emission volume is qualified;

[0019] S2: When the flue gas velocity increases, the sensor in the pitot tube senses the increase in gas pressure and transmits it to the outside through an electrical signal, thereby knowing that the flue gas velocity has changed at this time;

[0020] S3: When the dynamic pressure of the pitot tube increases, the pressure of the diaphragm box connected to it through the air guide pipe increases synchronously, driving the shielding plate to move upward. At this time, the shielding plate will stretch the bellows and increase the travel distance of the smoke from the air outlet to the offset hole;

[0021] S4: When the pressure of the diaphragm box increases, the top will move upward, driving one end of the lever to move upward. At this time, the other end of the lever moves downward, pushing the connecting shaft and the telescopic rod to rotate, so that the telescopic rod drives the offset plate through the driving plate to block the air outlet; at the same time, when the bellows expands upward, it will drive the baffle to expand, thereby extending the flow path of the gas in the bellows.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention proposes a flue gas flow rate comparison device that can be translated and adjusted. Through the cooperation of a driving mechanism and an adjusting mechanism, the driving mechanism responds quickly under the detection and transmission of the pitot tube, thereby driving and controlling other structures. As the flue gas flow detected by the pitot tube gradually increases, the driving mechanism can drive other mechanisms to change. Under the action of the driving mechanism, the adjusting mechanism changes the size of the air intake of the air outlet, and at the same time changes the discharge amount and discharge speed of the flow rate; thereby extending the path of the flue gas outflow and reducing the speed of the flue gas outflow, thereby reducing the amount of smoke exhaust, achieving normal flue gas discharge, and avoiding environmental pollution.

[0024] 2. The present invention proposes a smoke flow rate comparison device that can be translated to adjust the smoke flow rate. When the membrane box rises due to the influence of dynamic pressure, it will drive one end of the lever hinged to the membrane box to move upward. At this time, a fixed column supporting the lever is installed on the smoke outlet plate. As the membrane box moves upward, one end of the lever moves upward, while the other end moves downward, thereby pushing the connecting shaft in contact with it to move downward, and the connecting shaft drives one end of the telescopic rod connected to it to move obliquely downward. At this time, the telescopic rod is hinged to the fixed rod, and the other end of the telescopic rod rotates upward around the fixed rod. The telescopic movement of the telescopic rod is used to compensate for the distance change caused by its telescopic movement, so that the telescopic rod drives the drive plate hinged to it to move and pushes the rotating handle, thereby pushing the end of the offset plate hinged to the smoke outlet plate, thereby achieving the blocking of smoke at the air outlet and the bellows, thereby reducing the emission of smoke.

[0025] 3. The present invention proposes a method for adjusting a flue gas flow rate comparison device that can be translated and adjusted. The method detects the flow velocity of the flue gas at the air outlet in real time, and then automatically adjusts the exhaust volume of the flue gas. Specifically, the method increases the smoke travel distance and reduces the diameter of the smoke exhaust port, so as to timely adjust the exhaust volume of the flue gas per unit time and reduce environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the specific implementation mode or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are one implementation mode of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the driving mechanism of the present invention;

[0029] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0030] Figure 4 It is a schematic diagram of the regulating mechanism of the present invention;

[0031] Figure 5 is a bottom view of the present invention;

[0032] Figure 6 It is a half-section schematic diagram of the present invention;

[0033] Figure 7 is a half-section schematic diagram of another viewing angle of the present invention;

[0034] Figure 8 It is a flow chart of the method of the present invention.

[0035] In the figure: 1. pipeline; 2. smoke outlet plate; 3. air outlet; 4. Pitot tube; 5. driving mechanism; 51. air guide tube; 52. membrane box; 53. offset hole; 54. bellows; 541. inner tube; 542. outer tube; 543. baffle layer; 544. expansion layer; 6. shielding plate; 7. adjusting mechanism; 71. lever; 72. connecting shaft; 73. telescopic rod; 74. fixing rod; 75. driving plate; 76. rotating handle; 77. offset plate. DETAILED DESCRIPTION

[0036] In order to better understand the above solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figure 1-8 As shown, the present invention provides a translationally adjustable smoke flow rate comparison device, comprising a smoke outlet plate 2 provided at the front end of a pipe 1 and an air outlet 3 provided on the smoke outlet plate 2, and also comprising a Pitot tube 4, a driving mechanism 5, a baffle plate 6, and an adjusting mechanism 7. The Pitot tube 4 is installed below the smoke outlet plate 2, the driving mechanism 5 is installed at the Pitot tube 4, the baffle plate 6 is installed above the smoke outlet plate 2, the adjusting mechanism 7 is located on one side of the baffle plate 6, the Pitot tube 4 detects and transmits the air volume to the driving mechanism 5, the driving mechanism 5 drives the baffle plate 6 to move unidirectionally by increasing the gas flow rate in the Pitot tube 4, and the baffle plate 6 drives the adjusting mechanism 7 to reduce the outflow of smoke in the smoke flow channel.

[0038] The smoke at the bottom of the initial pipe 1 will flow upward through the air outlet 3 on the smoke outlet plate 2. The air outlet 3 restricts the smoke emission inside the pipe 1 and also provides a flow path for the smoke. With the setting of the pitot tube 4, the pitot tube 4 can perform real-time detection of the smoke discharged upward through the air outlet 3. On the one hand, the detection result can be transmitted to the data platform, and on the other hand, it is used to start other devices, thereby forming timely internal adjustments;

[0039] The driving mechanism 5 responds quickly under the detection transmission of the Pitot tube 4, thereby driving and controlling other structures. As the flue gas flow detected by the Pitot tube 4 gradually increases, the driving mechanism 5 can drive other mechanisms to change, thereby extending the flue gas outflow path and reducing the flue gas outflow speed, thereby reducing the amount of flue gas exhaust, achieving normal flue gas discharge and avoiding environmental pollution.

[0040] The baffle plate 6 provides a component that moves synchronously with the driving mechanism 5. As the baffle plate 6 moves upward, it can clearly increase the distance between it and the air outlet 3, so that when the smoke is discharged, the offset holes 53 on the baffle plate 6 and the air outlet 3 can form a new flow channel, which on the one hand increases the distance the smoke needs to flow out, thereby achieving the effect of reducing the smoke emission. On the other hand, by increasing the resistance to the outflow of smoke, when the smoke flows outward, it can reduce the smoke flow rate and reduce the emission when the resistance is large.

[0041] The regulating mechanism 7 changes the size of the orifice under the action of the driving mechanism 5, and simultaneously changes the discharge volume and discharge speed of the flow.

[0042] The number of the Pitot tubes 4 is equal to the number of the air outlets 3 to be measured, sensors are provided at the bends of the Pitot tubes 4 , and the number of the shielding plates 6 is equal to the number of the Pitot tubes 4 .

[0043] Different pipes 1 may correspond to different numbers of air outlets 3. As the smoke in each pipe 1 is transmitted and discharged, the Pitot tube 4 in each pipe 1 can be monitored in real time, and then the smoke speed of the internal smoke passing through the air outlet 3 can be adjusted in a targeted manner. On the one hand, the sensor can sense the pressure change, and on the other hand, it is through the pressure transmission method that the flow rate at the air outlet 3 can be adjusted.

[0044] The driving mechanism 5 includes an air guide tube 51, a membrane box 52, a dislocation hole 53 and a bellows 54; the air guide tube 51 is connected to the end of the pitot tube 4, the membrane box 52 is installed above the smoke outlet plate 2, the membrane box 52 is connected to the other end of the air guide tube 51, the dislocation hole 53 corresponds to the air outlet 3, and the bellows 54 is installed between the dislocation hole 53 and the air outlet 3;

[0045] The air guide tube 51 balances the pressure in the diaphragm box 52 and the Pitot tube 4. When the flow rate increases, the Pitot tube 4 transmits the increased dynamic pressure to the diaphragm box 52, so that the dynamic pressure inside the ink cartridge increases, so that the baffle plate 6 can be gradually lifted, and then the offset hole 53 rises, and the corrugated layer between the offset hole 53 and the air outlet 3 changes from a compressed state to a stretched state, and then the exhaust path of the smoke is extended, thereby reducing the exhaust amount of smoke per unit time, thereby achieving the control of the exhaust amount of smoke.

[0046] The adjusting mechanism 7 comprises a lever 71, a connecting shaft 72, a telescopic rod 73, a fixed rod 74, a driving plate 75, a rotating handle 76 and a dislocation plate 77. The lever 71 is mounted above the membrane box 52, the connecting shaft 72 is mounted below the other end of the lever 71, the telescopic rod 73 is mounted at the other end of the connecting shaft 72, the fixed rod 74 is mounted on the telescopic rod 73, the driving plate 75 is hingedly mounted at the bottom end of the telescopic rod 73, the rotating handle 76 is mounted on the driving plate 75, the dislocation plate 77 is hingedly mounted on the smoke outlet plate 2, and the dislocation plate 77 is connected to the rotating handle 76.

[0047] When the diaphragm box 52 rises under the influence of dynamic pressure, it will drive one end of the lever 71 hinged to the diaphragm box 52 to move upward. At this time, a fixed column supporting the lever 71 is installed on the smoke outlet plate 2. As the diaphragm box 52 moves upward, one end of the lever 71 moves upward, while the other end moves downward, thereby pushing the connecting shaft 72 in contact with it to move downward. The connecting shaft 72 drives one end of the telescopic rod 73 connected to it to move obliquely downward. At this time, the telescopic rod 73 is hinged to the fixed rod 74, so the other end of the telescopic rod 73 rotates upward around the fixed rod 74. The extension and contraction of the telescopic rod 73 is used to compensate for the distance change caused by its extension and contraction, so that the telescopic rod 73 drives the drive plate 75 hinged to it to move, and pushes the rotating handle 76, thereby pushing the end of the offset plate 77 hinged to the smoke outlet plate 2, thereby achieving the blocking of smoke at the air outlet 3 and the bellows 54, thereby reducing the emission of smoke.

[0048] The bellows 54 is a double-layer structure, and is divided into an inner tube 541 and an outer tube 542 . A baffle layer 543 is distributed between the outer tube 542 and the inner tube 541 .

[0049] The inner tube 541 and the outer tube 542 have different bending angles, and the internal gas flows in a different way. The baffle layer 543 can flow the smoke along the direction of the baffle layer 543 in the initial state, thereby providing a transmission cavity between the double layers of the bellows 54, reducing the smoke emission per unit time.

[0050] The diameter of the circle where the top of the membrane box 52 is located is larger than the diameter of the circle where the bottom of the membrane box 52 is located. At this time, when the membrane box 52 rises, it will gradually drive the lever 71 to move. If the upper and lower distances of the membrane box 52 are the same, the movement of the membrane box 52 will not be able to quickly drive the lever 71 to move, thereby realizing the normal operation of the adjustment mechanism 7.

[0051] An expansion layer 544 is installed on the upper edge of the outer tube 542. The initial position of the expansion layer 544 is located on the inner folded surface of the outer tube 542. The cross section of the expansion layer 544 is the same as the cross section of the gap in the outer tube 542. When the bellows 54 is not unfolded, the expansion layer 544 fills the gap inside the tube, thereby preventing the flow path of the smoke from being too long in the initial state. Therefore, compared with the bellows 54 after unfolding, the amount of smoke emission will not be affected.

[0052] After the bellows 54 is unfolded, the top of the expansion layer 544 is connected to the inner wall of the outer tube 542, and the distance between the inner tube 541 and the outer tube 542 becomes smaller, and the expansion layer 544 just fits the outer wall of the inner tube 541, thereby forming a blocking block. With the blocking of the expansion layer 544, the flow direction of the smoke can be changed, thereby extending the time from the smoke passing through the air outlet 3 to complete discharge, thereby reducing the exhaust volume of the offset hole 53 per unit time.

[0053] The volume value of the gap space between the outer tube 542 and the inner tube 541 is equal to twice the volume value of the space inside the inner tube 541, and an air guide plate is installed at the bottom between the outer tube 542 and the inner tube 541; the edge thickness value of the air guide plate is greater than the center thickness value, and the projection surface of the air guide plate is equal to half of the bottom area of ​​the gap between the outer tube 542 and the inner tube 541; the air guide plate here has the following functions: first, it can block the gap between the outer tube 542 and the inner tube 541, and at this time, when the gas flows upward through the air outlet 3, it can limit the flow path of the gas, and then it will flow upward through the air outlet 3, and the air guide plate changes the air intake between the bellows 54, and on the basis of reducing the air intake, it can extend the flow time of the gas in the bellows 54 and reduce the emission per unit time.

[0054] Secondly, it can play a guiding role, directing the wind from a free direction to flow to the gap between the air outlet 3 and the bottom of the bellows 54 in a constrained manner, thereby reducing the resistance at the air outlet 3 and allowing the smoke to be discharged more smoothly.

[0055] The air guide plate is embedded in the smoke outlet plate 2 , and a gap for accommodating the air guide plate is provided between the outer tube 542 and the inner tube 541 .

[0056] One end of the baffle layer 543 is connected to the inner wall of the outer tube 542, and the other end of the baffle layer 543 is connected to the side of the inner tube 541 facing the outer tube 542. The baffle layer 543 is folded, and the bottom of the folded surface at the edge of the baffle layer 543 is shorter than the folded surface in the center. When it is not unfolded, the folded surface is small and will not have a great impact on the smoke circulation. As the corrugated tube 54 unfolds, the baffle layer 543 gradually unfolds, thereby blocking the smoke entering the air outlet 3.

[0057] A method for adjusting a flue gas flow rate comparison device that can be adjusted in translation is applicable to any of the above-mentioned flue gas flow rate comparison devices that can be adjusted in translation, and comprises the following steps:

[0058] S1: When the flue gas is transmitted to the Pitot tube 4, part of the flue gas is absorbed into the Pitot tube 4 by the Bernoulli principle, and the change of gas pressure is sensed by the sensor arranged in the Pitot tube 4. When the pressure does not change, the flue gas emission speed is normal and the emission volume is qualified;

[0059] S2: When the flue gas velocity increases, the sensor in the pitot tube 4 senses the increase in gas pressure and transmits it to the outside through an electrical signal, thereby knowing that the flue gas velocity has changed at this time;

[0060] S3: When the dynamic pressure of the pitot tube 4 increases, the pressure of the membrane box 52 connected to it through the air guide pipe 51 increases synchronously, driving the shielding plate 6 to move upward. At this time, the shielding plate 6 will stretch the bellows 54, increasing the travel distance of the smoke from the air outlet 3 to the offset hole 53;

[0061] S4: When the pressure of the membrane box 52 increases, the top will move upward, driving one end of the lever 71 to move upward. At this time, the other end of the lever 71 moves downward, pushing the connecting shaft 72 and the telescopic rod 73 to rotate, so that the telescopic rod 73 drives the offset plate 77 through the driving plate 75 to block the air outlet 3; at the same time, when the bellows 54 is expanded upward, it will drive the deflector to expand, thereby extending the flow path of the gas in the bellows 54.

[0062] When it is necessary to compare the flow rate of flue gas, the flue gas is transmitted to the Pitot tube 4, and part of the flue gas is absorbed into the Pitot tube 4 by the Bernoulli principle. The change of gas pressure is sensed by the sensor arranged in the Pitot tube 4. When the pressure does not change, the flue gas emission speed is normal and the emission volume is qualified.

[0063] When the flue gas velocity increases, the sensor in the pitot tube 4 senses the increase in gas pressure and transmits it to the outside through an electrical signal, thereby knowing that the flue gas velocity has changed at this time; the air guide tube 51 balances the pressure in the diaphragm box 52 and the pitot tube 4. When the flue gas velocity increases, the pitot tube 4 transmits the pressure to the diaphragm box 52 under the condition of increased dynamic pressure, so that the dynamic pressure inside the ink cartridge increases, so that the baffle plate 6 can be gradually lifted, and then the offset hole 53 rises, and the corrugated layer between the offset hole 53 and the air outlet 3 changes from a compressed state to a stretched state. When the diaphragm box 52 rises under the influence of the dynamic pressure, it will drive the hinged part connected to the diaphragm box 52 to move upward. One end of the lever 71 moves upward, and the other end moves downward, which in turn pushes the connecting shaft 72 in contact with it to move downward, and the connecting shaft 72 drives one end of the telescopic rod 73 connected thereto to move obliquely downward. At this time, the telescopic rod 73 is hinged to the fixed rod 74, and the other end of the telescopic rod 73 rotates upward around the fixed rod 74. The extension and retraction of the telescopic rod 73 is used to compensate for the distance change caused by its extension and retraction, so that the telescopic rod 73 drives the driving plate 75 hinged thereto to move, and pushes the rotating handle 76, thereby pushing the end of the offset plate 77 hinged to the smoke outlet plate 2, thereby forming a shielding for the air outlet 3.

[0064] The basic principles and beneficial effects of the present invention are shown and described above. At the same time, the present invention is not limited to the above embodiments. Without departing from the effects and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements all fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A smoke flow rate comparison device capable of translationally adjusting the flow rate of smoke, comprising a smoke outlet plate (2) provided at the front end of a pipe (1) and an air outlet (3) provided on the smoke outlet plate (2), characterized in that: It also comprises a Pitot tube (4), a driving mechanism (5), a shielding plate (6), and an adjusting mechanism (7); the Pitot tube (4) is installed below the smoke outlet plate (2); the driving mechanism (5) is installed at the Pitot tube (4); the shielding plate (6) is installed above the smoke outlet plate (2); the adjusting mechanism (7) is located on one side of the shielding plate (6); the Pitot tube (4) detects and transmits the air volume to the driving mechanism (5); the driving mechanism (5) drives the shielding plate (6) to move in one direction by increasing the gas flow rate in the Pitot tube (4); and the shielding plate (6) drives the adjusting mechanism (7) to reduce the outflow of the internal smoke of the smoke duct (1).

2. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 1 is characterized in that: The number of the Pitot tubes (4) is equal to the number of air outlets (3) to be measured, sensors are provided at the bends of the Pitot tubes (4), and the number of the shielding plates (6) and the Pitot tubes (4) is equal.

3. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 1 is characterized in that: The driving mechanism (5) comprises an air guide tube (51), a membrane box (52), an offset hole (53) and a bellows (54); the air guide tube (51) is connected to the end of the pitot tube (4), the membrane box (52) is installed above the smoke outlet plate (2), the membrane box (52) is connected to the other end of the air guide tube (51), the offset hole (53) corresponds to the air outlet (3), and the bellows (54) is installed between the offset hole (53) and the air outlet (3).

4. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 3 is characterized in that: The adjusting mechanism (7) comprises a lever (71), a connecting shaft (72), a telescopic rod (73), a fixed rod (74), a driving plate (75), a rotating handle (76) and a dislocation plate (77); the lever (71) is mounted above the membrane box (52); the connecting shaft (72) is mounted below the other end of the lever (71); the telescopic rod (73) is mounted at the other end of the connecting shaft (72); the fixed rod (74) is mounted on the telescopic rod (73); the driving plate (75) is hingedly mounted on the bottom end of the telescopic rod (73); the rotating handle (76) is mounted on the driving plate (75); the dislocation plate (77) is hingedly mounted on the smoke outlet plate (2); and the dislocation plate (77) is connected to the rotating handle (76).

5. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 3 is characterized in that: The bellows (54) is a double-layer structure. The bellows (54) is divided into an inner tube (541) and an outer tube (542). A baffle layer (543) is distributed between the outer tube (542) and the inner tube (541).

6. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 4 is characterized in that: The diameter of the circle where the top of the membrane box (52) is located is greater than the diameter of the circle where the bottom of the membrane box (52) is located.

7. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 5 is characterized in that: An expansion layer (544) is installed on the upper edge of the outer tube (542); the initial position of the expansion layer (544) is located on the inner folded surface of the outer tube (542); and the cross section of the expansion layer (544) is the same as the cross section of the inner space of the outer tube (542).

8. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 7 is characterized in that: The volume value of the gap space between the outer tube (542) and the inner tube (541) is equal to twice the volume value of the space inside the inner tube (541), and an air guide plate is installed at the bottom between the outer tube (542) and the inner tube (541); the edge thickness value of the air guide plate is greater than the center thickness value, and the projection surface of the air guide plate is equal to half the bottom area of ​​the gap between the outer tube (542) and the inner tube (541).

9. The device for comparing flue gas flow rate and velocity that can be adjusted in translation according to claim 8 is characterized in that: One end of the baffle layer (543) is connected to the inner wall of the outer tube (542), and the other end of the baffle layer (543) is connected to the side of the inner tube (541) facing the outer tube (542). The baffle layer (543) is folded, and the bottom of the folded surface at the edge of the baffle layer (543) is shorter than the folded surface at the center.

10. A method for adjusting a flue gas flow rate comparison device that can be adjusted in translation, applicable to any one of the flue gas flow rate comparison devices that can be adjusted in translation according to claims 1-9, characterized in that: The following steps are involved: S1: When the flue gas is transmitted to the Pitot tube (4), part of the flue gas is absorbed into the Pitot tube (4) by the Bernoulli principle, and the change of gas pressure is sensed by the sensor arranged in the Pitot tube (4). When the pressure does not change, the flue gas emission speed is normal and the emission volume is qualified; S2: When the smoke velocity increases, the sensor in the pitot tube (4) senses the increase in gas pressure and transmits it to the outside through an electrical signal, thereby knowing that the smoke velocity has changed at this time; S3: When the dynamic pressure of the pitot tube (4) increases, the pressure of the membrane box (52) connected to it through the air guide tube (51) increases synchronously, driving the shielding plate (6) to move upward. At this time, the shielding plate (6) will stretch the bellows (54), increasing the travel distance of the smoke from the air outlet (3) to the offset hole (53); S4: When the pressure of the membrane box (52) increases, the top will move upward, driving one end of the lever (71) to move upward. At this time, the other end of the lever (71) moves downward, pushing the connecting shaft (72) and the telescopic rod (73) to rotate, so that the telescopic rod (73) drives the offset plate (77) through the driving plate (75) to block the air outlet (3); at the same time, when the bellows (54) is expanded upward, it will drive the baffle plate to expand, thereby extending the flow path of the gas in the bellows (54).

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