Flue gas flow detection device for thermal power plant

Abstract

The invention relates to the technical field of flue gas flow detection equipment, in particular to a thermal power plant flue gas flow detection device, which comprises a flue gas pipe, an outer mounting plate, an inner mounting plate, an arc-shaped inner clamping plate, a dehumidification assembly and a cooling assembly, and is characterized in that the outer mounting plate is mounted on the outer wall of the flue gas pipe, and a detection ring is mounted on the outer mounting plate; the inner mounting plate is mounted on the inner wall of the flue gas pipe, the arc-shaped inner clamping plate is slidably connected to the side, away from the flue gas pipe, of the inner mounting plate, the dehumidification assembly is mounted on the side, away from the inner mounting plate, of the arc-shaped inner clamping plate, and the cooling assembly is mounted on the inner wall of the inner mounting plate. By arranging the dehumidification assembly, the accuracy and the reliability of a flue gas flow detection result are improved. And the cooling assembly is arranged, so that the to-be-detected flue gas is always maintained in a stable temperature interval, and the detection precision is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas flow detection equipment, in particular to a flue gas flow detection device for a thermal power plant. Background Art

[0002] With the introduction and popularization of the concept of environmental economics, the importance of flue gas flow monitoring in thermal power plants has also increased. From the perspective of environmental protection, monitoring flue gas flow can accurately grasp the total amount of pollutant emissions from thermal power plants, which is of great significance for ensuring compliance with national and local environmental protection standards, reducing air pollution, and protecting public health and the ecological environment. It also helps to grasp greenhouse gas emissions to respond to climate change. In terms of production operations, flue gas flow is closely related to combustion efficiency. Flue gas monitoring can enable users to understand the combustion status and adjust combustion parameters in a timely manner, thereby improving fuel utilization, reducing energy consumption, and saving costs. At the same time, by monitoring abnormal changes in flue gas flow, it can detect equipment failures or unstable operations and ensure equipment safety.

[0003] Existing flue gas flow detection devices in thermal power plants are often installed by plugging an outer mounting plate onto the outer side of the outer wall of the flue gas pipe of the thermal power plant, overlapping a fixed plate on the right side of the outer mounting plate, plugging a flow meter on the right side of the fixed plate, plugging the outer wall on the left side of the flow meter into one side of the detection ring, and fixing the inner mounting plate on the left side of the inner wall of the flue gas pipe of the thermal power plant. When connecting the outer mounting plate with the detection ring and the flue gas pipe of the thermal power plant, first place the rubber pad group on the outer wall on the right side of the flue gas pipe of the thermal power plant, then the outer mounting plate can be plugged into the outer wall of the flue gas pipe of the thermal power plant, plug the screw into the outer mounting plate, and use a tool to rotate the screw so that the left side of the outer wall of the screw is threadedly connected to the right side of the outer wall of the flue gas pipe of the thermal power plant, and then the outer mounting plate can be fixed to the outer wall of the flue gas pipe of the thermal power plant so that the detection ring can be installed.

[0004] In the prior art, although the installation of the inner and outer mounting plates achieves the effect of quick installation of the detection device, it is difficult to effectively process the water vapor in the smoke when detecting the flow rate of smoke with high humidity. As a result, the high-humidity smoke causes water vapor to condense on the sensor surface of the measuring device, affecting the performance of the sensor and thus causing inaccurate measurement results. In addition, humidity also affects the density and viscosity of the smoke, further affecting the accuracy of the flow measurement results. Therefore, how to prevent high-humidity flue gas from condensing water vapor on the sensor surface and thereby improve the flue gas detection accuracy has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides a flue gas flow detection device for a thermal power plant, which is used to solve the problem of how to prevent high-humidity flue gas from condensing water vapor on the sensor surface, thereby improving the flue gas detection accuracy.

[0006] The present invention provides a flue gas flow detection device for a thermal power plant, comprising: Flue pipe, An outer mounting plate is mounted on the outer wall of the flue gas pipe, and a detection ring is mounted on the outer mounting plate; Inner mounting plate, installed on the inner wall of the flue pipe; The arc-shaped inner clamping plate is slidably connected to the side of the inner mounting plate away from the smoke pipe; The dehumidification component is installed on the side of the arc-shaped inner card plate away from the inner mounting plate; The cooling assembly is installed on the inner wall of the inner mounting plate.

[0007] In some embodiments, the dehumidification assembly includes: The fixed support ring is installed on one side of the arc-shaped inner clamping plate; The lifting support ring is slidably connected to the fixed support ring; The mounting ring is mounted on the inner ring of the lifting support ring, and the dehumidification net is detachably connected to the inner ring of the mounting ring; There are multiple groups of lifting support rings and mounting rings arranged in the vertical direction.

[0008] In some embodiments, the dehumidification assembly further comprises: A screw rod is installed on the lowermost lifting support ring, and one end of the screw rod passes through the multiple lifting support rings in sequence along the vertical direction and is threadedly connected to the fixed support ring; The first motor is installed on the lowermost lifting support ring, and the output end is connected to the other end of the lead screw.

[0009] In some embodiments, the dehumidification assembly further comprises: There are multiple groups of engaging circular blocks, and the engaging circular blocks are installed at the bottom of the lifting support ring; There are multiple sets of clamping components, and the clamping components are installed on the upper side of the lifting support ring.

[0010] In some embodiments, the snap assembly includes: Fixed base, installed on the lifting support ring; Two sets of first springs are provided, and one end of the first spring is connected to the fixed base; an extension plate, the bottom of which is connected to the other end of the first spring; One side of the clamping arc block is connected to the side surface of the extension plate, and the bottom of the clamping arc block is rotatably connected to the fixed base.

[0011] In some embodiments, the dehumidification assembly further comprises: An abutment bar is installed on a side of the lifting support ring close to the inner mounting plate; The limiting component is installed on the inner mounting plate, and the limiting component abuts against the abutting bar.

[0012] In some embodiments, the limiting assembly includes: A rotating gear is arranged on one side of the inner mounting plate; A fixing rod is provided on the inner mounting plate, and one end of the fixing rod is rotatably connected to the rotating gear; A first limiting block is installed on the fixing rod; A second limiting block is installed on the fixing rod; an abutment block, mounted on a side of the rotating gear close to the fixed rod; A fixed block is provided on one side of the rotating gear and abuts against the rotating gear; One end of the second spring is connected to a side of the fixing block away from the rotating gear, and the other end is connected to the inner mounting plate.

[0013] In some embodiments, the cooling assembly includes: The supporting round frame is installed at the bottom of the inner mounting plate, and the outer ring is connected to the smoke pipe; The cooling arc plates are installed on the inner circle of the supporting frame and are provided in multiple groups; Cooling pipeline, installed inside the cooling arc plate; a water inlet pipe connected to one end of the cooling pipe; The water outlet pipe is connected to the other end of the cooling pipeline.

[0014] In some embodiments, the water outlet pipe comprises: a first water outlet pipe, one end of which is connected to the water inlet pipe; a second water outlet pipe, one end of which is connected to the other end of the first water outlet pipe; a third water outlet pipe, one end of which is connected to the other end of the second water outlet pipe; Pipeline control mechanism, installed on the water inlet pipe.

[0015] In some embodiments, the pipeline control mechanism further comprises: The ball valves are provided in multiple groups and are respectively installed on the first water outlet pipe; a second motor, drivingly connected to the ball valve; The ball valve includes: Inner ball block; a water channel is provided inside; The outer spherical shell is sleeved on the outside of the inner spherical block and has a slot on its surface; A connecting rod, one end of which passes through the outer spherical shell and is connected to the inner spherical block, and is driven by the second motor; The bevel gear is connected to the other end of the connecting rod, and the bevel gear is meshed with the bevel gear of another set of ball valves.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention can adsorb and separate moisture in the flue gas by setting a dehumidification component, thereby avoiding the difficulty in effectively treating the flue gas when the humidity of the flue gas is high, and preventing water vapor in the flue gas from adhering to the outer wall of the detection ring and affecting the detection results, thereby improving the accuracy and reliability of the flue gas flow detection results.

[0017] 2. The present invention has a structure in which, except for the bottom end of the bottommost lifting support ring, all the lifting support rings are fixedly installed with a locking round block, and except for the top end of the topmost lifting support ring, all the lifting support rings are fixedly installed with a fixed base, and a pair of locking arc blocks are rotatably installed on the top end of the fixed base. An extension plate is fixedly installed on one side of the locking arc block, and the extension plate and the fixed base are connected by a second spring. This structural design can strengthen the connection strength between the lifting support rings when removing or replacing the dehumidification net, making the installation and disassembly of the dehumidification net more convenient.

[0018] 3. The present invention provides a cooling assembly, and multiple temperature sensors are installed in the vertical direction on the inner mounting plate, so that the device of the present invention can perform layered cooling treatment on high-temperature flue gas. By setting the maximum temperature threshold and the minimum temperature threshold, if the temperature of a certain layer exceeds the maximum temperature threshold, the cooling pipeline is connected through the corresponding ball valve for cooling. When the temperature drops to the minimum temperature threshold, the ball valve rotates and closes, so that the flue gas to be tested is always maintained in a stable temperature range, further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a smoke flow detection device for a thermal power plant according to the present invention from one perspective; Figure 2 yes Figure 1 A cross-sectional schematic diagram of a flue gas flow detection device for a thermal power plant is shown; Figure 3 yes Figure 1 A cross-sectional schematic diagram of a dehumidification component in a flue gas flow detection device for a thermal power plant is shown; Figure 4 yes Figure 3 An enlarged view of point A in a flue gas flow detection device for a thermal power plant is shown; Figure 5 yes Figure 1 The figure shows a schematic cross-sectional structure diagram of a dehumidification component in a flue gas flow detection device for a thermal power plant from another perspective.

[0020] Figure 6 yes Figure 5 An enlarged view of point B in a flue gas flow detection device for a thermal power plant is shown; Figure 7 yes Figure 1 The schematic diagram of the structure of the cooling pipeline in a flue gas flow detection device of a thermal power plant is shown; Figure 8 yes Figure 1 The figure shows a schematic diagram of the structure of a ball valve in a flue gas flow detection device for a thermal power plant.

[0021] In the accompanying drawings, 1, flue gas pipe; 2, outer mounting plate; 3, inner mounting plate; 4, arc-shaped inner clamping plate; 5, dehumidification assembly; 51, fixed support ring; 52, lifting support ring; 53, mounting ring; 54, screw; 55, first motor; 56, engaging circular block; 57, engaging assembly; 571, fixed base; 572, first spring; 573, extension plate; 574, engaging arc block; 58, abutting bar; 59, limiting assembly; 591, rotating gear; 592, fixing rod; 593, first limiting block; 594, second limiting block; 595, Abutment block; 596, fixing block; 597, second spring; 6, cooling assembly; 61, supporting frame; 62, cooling arc plate; 63, cooling pipeline; 64, water inlet pipe; 65, water outlet pipe; 651, first water outlet pipe; 652, second water outlet pipe; 653, third water outlet pipe; 654, pipeline control mechanism; 6541, ball valve; 65411, inner ball block; 65412, water trough; 65413, outer spherical shell; 65414, slot; 65415, connecting rod; 65416, bevel gear; 6542, second motor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] As shown in the background technology, the existing flue gas flow detection device of a thermal power plant is often achieved by plugging an outer mounting plate onto the outer side of the outer wall of the thermal power plant flue gas pipe, overlapping a fixed plate on the right side of the outer mounting plate, plugging a flow meter on the right side of the fixed plate, plugging the outer wall on the left side of the flow meter into one side of the detection ring, and fixing the inner mounting plate on the left side of the inner wall of the thermal power plant flue gas pipe. When connecting the outer mounting plate with the detection ring and the thermal power plant flue gas pipe, first place the rubber pad group on the outer wall on the right side of the thermal power plant flue gas pipe, then the outer mounting plate can be plugged into the outer wall of the thermal power plant flue gas pipe, plug the screw into the outer mounting plate, and use a tool to rotate the screw so that the left side of the outer wall of the screw is threadedly connected to the right side of the outer wall of the thermal power plant flue gas pipe, then the outer mounting plate can be fixed to the outer wall of the thermal power plant flue gas pipe to install the detection ring. In the prior art, although the installation of the inner and outer mounting plates achieves the effect of quick installation of the detection device, it is difficult to effectively process the water vapor in the smoke when detecting the flow rate of smoke with high humidity. As a result, the high-humidity smoke causes water vapor to condense on the sensor surface of the measuring device, affecting the performance of the sensor and thus causing inaccurate measurement results. In addition, humidity also affects the density and viscosity of the smoke, further affecting the accuracy of the flow measurement results. Therefore, how to prevent high-humidity flue gas from condensing water vapor on the sensor surface and thereby improve the flue gas detection accuracy has become a technical problem that needs to be urgently solved by those skilled in the art.

[0024] To solve the above problems, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The present invention provides a flue gas flow detection device for a thermal power plant, comprising a flue gas pipe 1, an outer mounting plate 2, an inner mounting plate 3, an arc-shaped inner clamping plate 4, a dehumidification component 5 and a cooling component 6. The outer mounting plate 2 is mounted on the outer wall of the flue gas pipe 1, a detection ring is mounted on the outer mounting plate 2, the inner mounting plate 3 is mounted on the inner wall of the flue gas pipe 1, the arc-shaped inner clamping plate 4 is slidably connected to the side of the inner mounting plate 3 away from the flue gas pipe 1, the dehumidification component 5 is mounted on the side of the arc-shaped inner clamping plate 4 away from the inner mounting plate 3, and the cooling component 6 is mounted on the inner wall of the inner mounting plate 3.

[0025] Specifically, a dehumidification component is provided in the flue gas flow detection device of the present invention to dehumidify high-humidity flue gas, and by providing multiple layers of dehumidification nets with lower pore density, the influence of the flue gas flow detection device on the normal flow rate of the flue gas is reduced, thereby improving the accuracy of the flue gas flow detection results.

[0026] Furthermore, the flue gas flow detection device in the prior art only inserts the detection ring into the flue when performing flue gas flow detection. When the humidity of the flue gas is high, it is difficult to effectively process the flue gas, causing the water vapor in the flue gas to adhere to the outer wall of the detection ring, affecting the detection results. When the flue gas flow detection device uses the dehumidification component 5 of the present invention, the moisture in the flue gas can be adsorbed and separated, thereby improving the accuracy and reliability of the flue gas flow detection results.

[0027] Preferably, the dehumidification component 5 includes: a fixed support ring 51, a lifting support ring 52 and an installation ring 53. The fixed support ring 51 is installed on one side of the arc-shaped inner clamping plate 4. The lifting support ring 52 is slidably connected to the fixed support ring 51. The installation ring 53 is installed on the inner ring of the lifting support ring 52, and the dehumidification net is detachably connected to the inner ring of the installation ring 53. The lifting support ring 52 and the installation ring 53 are both arranged in multiple groups along the vertical direction.

[0028] Specifically, in order to reduce the influence of the dehumidification net on the flue gas flow rate after the dehumidification component 5 is set, multiple lifting support rings 52 and mounting rings 53 are provided according to actual conditions. In addition, the hole density of the dehumidification net increases layer by layer from bottom to top. This design can make the flue gas slow down the flow rate step by step when passing through the dehumidification net, avoiding the situation where the flow rate drops rapidly when the flue gas suddenly encounters the dehumidification net, which will produce a large impact force and pressure change, which may cause the flue gas flow to be unstable or even turbulent, affecting the measurement accuracy and normal operation of the equipment. In addition, the step-by-step deceleration can also improve the contact effect between water vapor and the dehumidification net, thereby improving the separation effect of the flue gas, improving the dryness of the flue gas, and reducing the influence of moisture on subsequent equipment measurements. In order to reduce the influence on the flue gas flow rate while ensuring water absorption, the dehumidification net in this embodiment can use materials such as silica gel and molecular sieve, and the hole density is greater than 20 holes / cm 2 And less than 100 pores / cm 2 .

[0029] Preferably, the dehumidification component 5 also includes: a screw rod 54 and a first motor 55, the screw rod 54 is installed on the lowest lifting support ring 52, and one end of the screw rod 54 passes through multiple groups of lifting support rings 52 in sequence along the vertical direction and is threadedly connected to the fixed support ring 51, the first motor 55 is installed on the lowest lifting support ring 52, and the output end is connected to the other end of the screw rod 54.

[0030] Specifically, when the dehumidification net needs to be replaced, such as when the flow measurement is performed for a long time and the dehumidification net absorbs a lot of moisture and impurities, or when the flue gas flow detection is stopped, in order not to affect the normal circulation of the flue, the dehumidification net needs to be removed from the flue gas flow detection device. At this time, the first motor 55 can be started so that the first motor 55 drives the screw rod 54 to rotate, and the screw rod 54 drives the bottom lifting support ring 52 to move upward, and the bottom lifting support ring 52 then abuts and pushes the upper lifting support ring 52, thereby pushing all the lifting support rings 52 to one side of the detection port of the flue gas pipe 1, making it convenient for the staff to replace the installation ring 53 and the dehumidification net.

[0031] Preferably, the dehumidification component 5 also includes: a snap-fit circular block 56 and a snap-fit component 57, the snap-fit circular block 56 is provided in multiple groups, and the snap-fit circular block 56 is installed at the bottom of the lifting support ring 52, and the snap-fit component 57 is provided in multiple groups, and the snap-fit component 57 is installed on the upper side of the lifting support ring 52.

[0032] Preferably, the locking assembly 57 includes: a fixed base 571, a first spring 572, an extension plate 573 and a locking arc block 574. The fixed base 571 is installed on the lifting support ring 52. The first spring 572 is provided in two groups, and one end is connected to the fixed base 571. The bottom of the extension plate 573 is connected to the other end of the first spring 572. One side of the locking arc block 574 is connected to the side of the extension plate 573, and the bottom of the locking arc block 574 is rotatably connected to the fixed base 571.

[0033] Specifically, when the first motor 55 drives the lifting support ring 52 to move upward through the screw rod 54, the engaging arc block 574 abuts against the engaging circular block 56. At this time, the engaging circular block 56 drives the engaging arc block 574 to rotate in the direction close to the first spring 572. The engaging arc block 574 drives the extension plate 573 to move. The extension plate 573 squeezes the first spring 572 so that the first spring 572 undergoes elastic deformation and accumulates elastic potential energy. When the engaging circular block 56 moves to the bottom end of the engaging arc block 574, the first spring 572 releases its elastic potential energy, deforms and pushes the extension plate 573 to move. The extension plate 573 drives the first spring 572 to move, so that the first spring 572 abuts against the engaging circular block 5 6, the engaging circular blocks 56 are clamped on both sides to strengthen the connection strength between the two adjacent lifting support rings 52, so that when the flue gas flow detection is started, or after the dehumidification net is replaced, the mounting ring 53 is sequentially engaged with the lifting support ring 52, and the first motor 55 is started at this time, so that the first motor 55 drives the screw rod 54 to rotate, so that the screw rod 54 drives the lifting support ring 52 of the bottom layer to move downward, and the lifting support ring 52 drives the upper lifting support ring 52 to move through the fixed base 571, the engaging arc block 574 and the engaging circular block 56. Furthermore, in order to layer the lifting support rings 52 and provide support when multiple lifting support rings 52 move.

[0034] Preferably, the dehumidification component 5 also includes: an abutment bar 58 and a limiting component 59, the abutment bar 58 is installed on the side of the lifting support ring 52 close to the inner mounting plate 3, the limiting component 59 is installed on the inner mounting plate 3, and the limiting component 59 abuts against the abutment bar 58.

[0035] Preferably, the limiting assembly 59 includes: a rotating gear 591, a fixed rod 592, a first limiting block 593, a second limiting block 594, an abutting block 595, a fixed block 596 and a second spring 597. The rotating gear 591 is arranged on one side of the inner mounting plate 3, the fixed rod 592 is arranged on the inner mounting plate 3, and one end of the fixed rod 592 is rotatably connected to the rotating gear 591. The first limiting block 593 is installed on the fixed rod 592, the second limiting block 594 is installed on the fixed rod 592, the abutting block 595 is installed on the side of the rotating gear 591 close to the fixed rod 592, the fixed block 596 is arranged on one side of the rotating gear 591 and abuts against the rotating gear 591. One end of the second spring 597 is connected to the side of the fixed block 596 away from the rotating gear 591, and the other end is connected to the inner mounting plate 3.

[0036] Specifically, the rotating gear 591 can be connected to the inner mounting plate 3 in the form of a sliding connection. When the lifting support ring 52 drives the mounting ring 53 to move, the mounting ring 53 drives the abutment bar 58 to move, so that the abutment bar 58 abuts against one side of the rotating gear 591 and drives the rotating gear 591 to rotate. The rotating gear 591 drives the abutment block 595 to move. When the abutment block 595 moves from one side of the first limit block 593 to the side of the second limit block 594, the second limit block 594 hinders the movement of the abutment block 595, thereby hindering the rotation of the rotating gear 591. At this time, the abutment bar 58 will stop when it moves to the side of the rotating gear 591, thereby realizing the stratification of the mounting ring 53, so that a certain distance is maintained between each layer of dehumidification nets, which can provide a certain moving space for the flue gas and prevent the flue gas from passing through more dehumidification nets multiple times in a short period of time, thereby causing a greater impact on the flow rate of the flue gas, and thus affecting the accuracy of the detection results.

[0037] Furthermore, a plurality of first limiting blocks 593 and second limiting blocks 594 are provided, and the lengths of arc segments between the first limiting blocks 593 and the second limiting blocks 594 in each layer are different.

[0038] One cm closer 2 In the step, the arc length between the first limit block 593 and the second limit block 594 is set to S, S=(Nn)×S×360 / A; Wherein N is the total number of the first limit blocks 593 and the second limit blocks 594 (N is an integer greater than 1), n is the number of layers of the first limit blocks 593 and the second limit blocks 594 from top to bottom (n is an integer less than N and greater than 0), S is the length of the arc segment between the two sides of the abutment block 595, and A is the number of teeth on the outside of the rotating gear 591. This design allows each rotating gear 591 to be locked after passing a certain number of mounting rings 53, and to block the last mounting ring 53 that passes through, thereby achieving precise stratification of multiple mounting rings 53 and the dehumidification net.

[0039] The second limit block 594 is used to prevent the rotating gear 591 from rotating.

[0040] Furthermore, in this embodiment, the shape of the fixed block 596 is set to be the same as the shape of the tooth block on the outside of the rotating gear 591. With this design, the first motor 55 can drive the lifting support ring 52 to move through the screw rod 54, so that when the mounting ring 53 moves upward, the mounting ring 53 drives the abutment bar 58 to move, and the abutment bar 58 drives the rotating gear 591 to rotate in the opposite direction, so that the rotating gear 591 can also push the fixed block 596 to move in the direction close to the second spring 597 at this time, avoiding the fixed block 596 from hindering the reverse rotation of the rotating gear 591, so that the rotating gear 591 can drive the abutment block 595 to reset when the dehumidification net moves upward.

[0041] Furthermore, in order to improve the fixing effect of the fixed block 596 on the rotating gear 591, a pair of fixed blocks 596 and a second spring 597 are provided on both sides of the rotating gear 591. Each pair of fixed blocks 596 and the second spring 597 are symmetrically arranged about the axis of the rotating gear 591. This design can make the fixed blocks 596 on both sides apply uniform thrust to the rotating gear 591, thereby further improving the stability of the rotating gear 591.

[0042] Preferably, the cooling assembly 6 includes: a supporting circular frame 61, a cooling arc plate 62, a cooling pipeline 63, a water inlet pipe 64 and a water outlet pipe 65. The supporting circular frame 61 is installed at the bottom of the inner mounting plate 3, and the outer ring is connected to the flue gas pipe 1. The cooling arc plate 62 is installed on the inner ring of the supporting circular frame 61, and multiple groups are provided. The cooling pipeline 63 is installed inside the cooling arc plate 62. The water inlet pipe 64 is connected to one end of the cooling pipeline 63, and the water outlet pipe 65 is connected to the other end of the cooling pipeline 63.

[0043] Preferably, the water outlet pipe 65 includes: a first water outlet pipe 651, a second water outlet pipe 652, a third water outlet pipe 653 and a pipeline control mechanism 654, one end of the first water outlet pipe 651 is connected to the water inlet pipe 64, one end of the second water outlet pipe 652 is connected to the other end of the first water outlet pipe 651, one end of the third water outlet pipe 653 is connected to the other end of the second water outlet pipe 652, and the pipeline control mechanism 654 is installed on the water inlet pipe 64.

[0044] Specifically, in order to avoid the detection of flue gas temperature being too high, which causes the flue gas volume to expand and leads to an inflated measurement result, and the pressure change caused by the flue gas volume expansion will also affect the flow rate and flow of the flue gas itself, thereby further affecting the accuracy of the measurement result, in this embodiment, a cooling component is provided, and when the flow rate of high-temperature flue gas is detected, the coolant can enter the cooling pipeline 63 from the water inlet pipe 64, and flow out through the first water outlet pipe 651, the second water outlet pipe 652 and the third water outlet pipe 653, so as to cool the flue gas on the inner side of the cooling arc plate 62, thereby improving the accuracy of the flue gas measurement results.

[0045] Furthermore, the number of cooling pipes 63 is the same as the number of mounting rings 53, and the position of each group of cooling pipes 63 is surrounded on one side of the lifting support ring 52, thereby enhancing the cooling effect at the dehumidification net, thereby enhancing the condensation effect of moisture in the flue gas, facilitating the dehumidification net to absorb moisture, and thereby enhancing the dehumidification efficiency of the dehumidification component.

[0046] Preferably, the pipeline control mechanism 654 further includes: a ball valve 6541 and a second motor 6542 . The ball valve 6541 is provided in multiple groups and is respectively installed on the first water outlet pipe 651 . The second motor 6542 is transmission-connected to the ball valve 6541 .

[0047] The ball valve 6541 includes: an inner ball block 65411, an outer ball shell 65413, a connecting rod 65415 and a bevel gear 65416. A water trough 65412 is provided inside the inner ball block 65411. The outer ball shell 65413 is sleeved on the outside of the inner ball block 65411 and has a straight groove 65414 on the surface. One end of the connecting rod 65415 passes through the outer ball shell 65413 and is connected to the inner ball block 65411, and is driven by the second motor 6542. The bevel gear 65416 is connected to the other end of the connecting rod 65415, and the bevel gear 65416 is engaged with the bevel gear 65416 of another set of ball valves 6541.

[0048] Specifically, a temperature sensor is provided on the inner side of each lifting support ring 52, and a ball valve 6541 is installed at the top of the cooling pipe 63 and the end of the first water outlet pipe 651 away from the second water outlet pipe 652. Through the cooperation of the temperature sensor, the ball valve 6541 and the second motor 6542, when high-temperature flue gas passes through the bottom lifting support ring 52, the bottom temperature sensor detects that the flue gas temperature is higher than the maximum temperature threshold. At this time, the bottom temperature sensor sends a signal to control the operation of the external cooling component 6, so that the water-cooled liquid flows into the bottom cooling pipe 63 through the water inlet pipe 64, and flows out through the bottom first water outlet pipe 651, the second water outlet pipe 652 and the third water outlet pipe 653.

[0049] Furthermore, when high-temperature flue gas passes through the non-bottom-layer lifting support ring 52, the temperature sensor there detects that the flue gas temperature is higher than the maximum temperature threshold. At this time, the temperature sensor sends a signal to the second motor 6542 at the next layer and controls the second motor 6542 to start. The second motor 6542 drives the connecting rod 65415 to rotate ninety degrees, the connecting rod 65415 drives the bevel gear 65416 to rotate, the bevel gear 65416 drives the inner ball block 65411 to rotate, and the inner ball block 65411 drives the water trough 65412 to rotate, thereby making the outer wall of the cooling pipe 63 The water trough 65412 is rotated to one side of the straight groove 65414, and the water trough 65412 on the outer wall of the first water outlet pipe 651 is rotated away from the side of the straight groove 65414, so that the lower layer cooling pipeline 63 is connected with the cooling pipeline 63 of this layer, so that the coolant cools the high-temperature flue gas of this layer. This design allows the cooling component to perform cooling treatment layer by layer, avoiding the situation where only the temperature of the flue gas in the lower layer needs to be cooled, while the temperature of the flue gas in the higher layer does not need to be cooled, and the cooling component still performs cooling treatment on this place, so that the moisture content in the flue gas at this place is reduced. It is easy to condense on the inner wall of the device, thereby generating water droplets attached to the inner wall of the device, which affects the life of the device and the measurement results. Furthermore, in order to prevent over-cooling, in addition to setting the maximum temperature threshold, the temperature sensor in this embodiment also sets a minimum temperature threshold. When the flue gas temperature at a certain location is lower than the minimum temperature threshold, the temperature sensor will send a signal to control the second motor 6542 of the lower layer to operate in reverse, thereby disconnecting the lower cooling pipeline 63 from the cooling pipeline 63 of the current layer, and at the same time open the valve of the first water outlet pipe 651 of the lower layer, so that the coolant no longer flows through the current layer area. When the bottom temperature sensor detects that the flue gas temperature at the bottom layer is lower than the minimum temperature threshold, the bottom stability sensor will send a signal to shut down the water cooling circulation device. It should be noted that in order to prevent the temperature above from being too high and the temperature below has returned to normal, and the connected ball valve 6541 or water cooling circulation device is directly closed below, resulting in the cooling component 6 being unable to cool the higher-level flue gas normally, the adjustment component is set so that the ball valve 6541 on this layer can only be closed after the ball valve 6541 on the upper layer is closed, thereby improving the stability and reliability of the adjustment component.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A flue gas flow detection device for a thermal power plant, characterized in that: include: Flue gas pipe (1), An outer mounting plate (2) is mounted on the outer wall of the flue gas pipe (1), and a detection ring is mounted on the outer mounting plate (2); An inner mounting plate (3) mounted on the inner wall of the flue gas pipe (1); An arc-shaped inner clamping plate (4) is slidably connected to a side of the inner mounting plate (3) away from the smoke pipe (1); A dehumidification component (5) is mounted on a side of the arc-shaped inner clamping plate (4) away from the inner mounting plate (3); A cooling assembly (6) is mounted on the inner wall of the inner mounting plate (3).

2. The flue gas flow detection device for a thermal power plant according to claim 1, characterized in that: The dehumidification component (5) comprises: A fixed support ring (51) is mounted on one side of the arc-shaped inner clamping plate (4); A lifting support ring (52) is slidably connected to the fixed support ring (51); A mounting ring (53) is mounted on the inner ring of the lifting support ring (52), and a dehumidification net is detachably connected to the inner ring of the mounting ring (53); The lifting support ring (52) and the mounting circular ring (53) are both provided in multiple groups along the vertical direction.

3. The flue gas flow detection device for a thermal power plant according to claim 2, characterized in that: The dehumidification component (5) further includes: A screw rod (54) is mounted on the lowermost lifting support ring (52), and one end of the screw rod (54) passes through the plurality of lifting support rings (52) in sequence along the vertical direction and is threadedly connected to the fixed support ring (51); The first motor (55) is mounted on the lowermost lifting support ring (52), and the output end is connected to the other end of the screw rod (54).

4. The flue gas flow detection device for a thermal power plant according to claim 2, characterized in that: The dehumidification component (5) further includes: Multiple groups of engaging circular blocks (56) are provided, and the engaging circular blocks (56) are installed at the bottom of the lifting support ring (52); The engaging components (57) are provided in multiple groups, and the engaging components (57) are installed on the upper side of the lifting support ring (52).

5. The flue gas flow detection device for a thermal power plant according to claim 4, characterized in that: The snap-fit assembly (57) comprises: A fixed base (571) is mounted on the lifting support ring (52); Two sets of first springs (572) are provided, and one end of the first spring is connected to the fixed base (571); an extension plate (573), the bottom of which is connected to the other end of the first spring (572); One side of the locking arc block (574) is connected to the side surface of the extension plate (573), and the bottom of the locking arc block (574) is rotatably connected to the fixed base (571).

6. The flue gas flow detection device for a thermal power plant according to claim 2, characterized in that: The dehumidification component (5) further includes: an abutment bar (58) mounted on a side of the lifting support ring (52) close to the inner mounting plate (3); A limiting assembly (59) is mounted on the inner mounting plate (3), and the limiting assembly (59) abuts against the abutting strip (58).

7. The flue gas flow detection device for a thermal power plant according to claim 6, characterized in that: The limiting component (59) includes: A rotating gear (591) is provided on one side of the inner mounting plate (3); A fixing rod (592) is provided on the inner mounting plate (3), and one end of the fixing rod (592) is rotationally connected to the rotating gear (591); A first limiting block (593) is mounted on the fixing rod (592); A second limiting block (594) is mounted on the fixing rod (592); an abutment block (595) mounted on a side of the rotating gear (591) close to the fixing rod (592); A fixed block (596) is provided on one side of the rotating gear (591) and abuts against the rotating gear (591); A second spring (597) has one end connected to a side of the fixing block (596) away from the rotating gear (591), and the other end connected to the inner mounting plate (3).

8. The flue gas flow detection device for a thermal power plant according to claim 1, characterized in that: The cooling assembly (6) comprises: A supporting circular frame (61) is mounted on the bottom of the inner mounting plate (3), and the outer ring is connected to the smoke pipe (1); Cooling arc plates (62) are mounted on the inner ring of the supporting frame (61), and are provided in multiple groups; A cooling pipeline (63) is installed inside the cooling arc plate (62); a water inlet pipe (64) connected to one end of the cooling pipe (63); The water outlet pipe (65) is connected to the other end of the cooling pipeline (63).

9. The flue gas flow detection device for a thermal power plant according to claim 8, characterized in that: The water outlet pipe (65) comprises: A first water outlet pipe (651), one end of which is connected to the water inlet pipe (64); A second water outlet pipe (652), one end of which is connected to the other end of the first water outlet pipe (651); A third water outlet pipe (653), one end of which is connected to the other end of the second water outlet pipe (652); The pipeline control mechanism (654) is installed on the water inlet pipe (64).

10. The flue gas flow detection device for a thermal power plant according to claim 9, characterized in that: The pipeline control mechanism (654) further includes: Ball valves (6541) are provided in multiple groups and are respectively installed on the first water outlet pipe (651); A second motor (6542) is transmission-connected to the ball valve (6541); The ball valve (6541) comprises: Inner ball block (65411); a water channel (65412) is provided inside; The outer spherical shell (65413) is sleeved on the outside of the inner spherical block (65411) and has a slot (65414) on its surface; A connecting rod (65415), one end of which passes through the outer spherical shell (65413) and is connected to the inner spherical block (65411), and is driven by a second motor (6542); The bevel gear (65416) is connected to the other end of the connecting rod (65415), and the bevel gear (65416) is engaged with the bevel gear (65416) of another set of the ball valves (6541).

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