Flue gas humidity monitoring device for thermal power generating unit

Abstract

The invention discloses a thermal power generating unit flue gas humidity monitoring device, which comprises a cylinder piece inserted into a pipeline; a cylinder is axially connected into the cylindrical part in a sliding manner; a sliding part is connected in the cylinder in a sliding manner; the sliding part can slide in the cylinder in the radial direction. Wherein after the sliding part slides in the cylinder in the radial direction, the cylinder and the sliding part form a mounting channel, and the humidity detector can be fixed in the pipeline through the mounting channel; the installation channel can be opened only by pressing the cylinder, the humidity detector is convenient to install, the blocking part can further reduce smoke leakage in the installation process, meanwhile, when the smoke detector needs to be disassembled, the cylinder, the sliding part and the blocking part can be reset by directly pulling out the smoke detector, then the smoke monitoring port can be closed in time, smoke leakage is reduced, and the smoke detection efficiency is improved. And the humidity detector can be quickly disassembled and assembled, so that when monitoring points need to be increased or changed, more convenience and quickness can be realized, and the monitoring operation efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of flue gas humidity monitoring technology, and in particular to a flue gas humidity monitoring device for thermal power units. Background Technology

[0002] Flue gas humidity is a key parameter affecting the accurate measurement of flue gas pollutant concentration and emission flow rate. In power plants, multiple flue gas monitoring ports are pre-installed on the exhaust channels of burners and boilers. Staff can obtain flue gas humidity data through these monitoring ports to monitor the combustion process and combustion status.

[0003] Although the monitoring ports of the smoke exhaust duct are equipped with humidity monitoring devices at fixed locations, in actual applications, in order to further improve the accuracy of humidity monitoring, it is often necessary to temporarily add monitoring points, adjust the distribution of existing devices, or carry out temporary testing through the monitoring ports.

[0004] Since unused flue gas monitoring ports are usually sealed, they need to be unsealed before the above operations can be performed to insert the flue gas humidity detector. Currently, these monitoring ports generally use flange seals, which are not convenient to open and close. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the existing sealing method is inconvenient to operate.

[0006] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a flue gas humidity monitoring device for thermal power units, including a cylindrical component that is inserted into a pipe; The cylindrical component is axially slidably connected to a cylinder; the cylinder is slidably connected to a sliding part; the sliding part can slide radially within the cylinder; When the sliding part slides radially in the cylinder, the cylinder and the sliding part form an installation channel, through which the humidity detector can be fixed in the pipe.

[0007] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units described in this invention: the upper and lower ends of the sliding part are provided with parallel inclined surfaces, and the cylinder is provided with an inclined groove that matches the inclined surfaces.

[0008] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units of the present invention: the cylinder is provided with an installation hole, and the sliding part is provided with a through groove. When the sliding part moves radially, the installation hole and the through groove correspond to form an installation channel.

[0009] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units described in this invention: the bottom of the cylinder is further provided with a sealing part, which can seal the bottom end of the installation channel.

[0010] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units of the present invention: the inner wall of the cylindrical part is further provided with a positioning part, and the bottom end of the cylinder is provided with a locking part. When the positioning part and the locking part are engaged, the position of the cylinder is fixed and the installation channel is in a connected state.

[0011] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units of the present invention: a limiting member is provided on the inner wall of the cylindrical part, the limiting member is connected to the sliding part, and the limiting member restricts the sliding part to move only radially.

[0012] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units of the present invention: the positioning part includes a hinge seat fixedly disposed on the inner wall of the cylindrical part, a rotating block is rotatably connected to the hinge seat, and a limiting plate is fixedly disposed on the top of the hinge seat.

[0013] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units according to the present invention: the locking part includes a fixing plate located below the cylinder, a plurality of connecting plates are connected between the fixing plate and the cylinder, a ring is sleeved on the outside of the connecting plate, and a plurality of second elastic plates are provided between the ring and the fixing plate.

[0014] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units of the present invention: a conical groove is provided at the top of the sealing part, and a guide is connected between the sealing part and the cylinder.

[0015] In a preferred embodiment of the flue gas humidity monitoring device for thermal power units according to the present invention: the guide member includes a fixed rod fixedly disposed on the sealing part, a fixed block fixedly disposed at the bottom of the cylinder, and the fixed rod is slidably connected to the fixed block; The top of the sealing part is fitted to the bottom of the cylinder, and a second elastic element is sleeved on the outside of the fixing rod.

[0016] The beneficial effects of this invention are as follows: when flue gas monitoring is not required, the flue gas monitoring port is fully sealed by the sealing part and the sliding part to prevent flue gas leakage. When flue gas monitoring is required, the installation channel can be opened simply by pressing the cylinder, facilitating the installation of the humidity detector. The sealing part can further reduce flue gas leakage during the installation process. At the same time, when the flue gas detector needs to be disassembled, it can be directly pulled out to reset the cylinder, sliding part, and sealing part, thereby enabling the flue gas monitoring port to be closed in time and reducing flue gas leakage. The quick disassembly and assembly of the humidity detector makes it more convenient and faster to add or change monitoring points, greatly improving the efficiency of monitoring operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 An installation diagram of the present invention is shown; Figure 2 A cross-sectional view of the cylindrical component in this invention is shown; Figure 3 A schematic diagram of the sealing part in this invention is shown; Figure 4 A cross-sectional view of the cylinder in this invention is shown; Figure 5 A schematic diagram of the positioning part in this invention is shown. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figure 1 - Figure 5 This embodiment provides a flue gas humidity monitoring device for thermal power units, including a cylindrical component 1, which is inserted into a pipe; The cylindrical component 1 is axially slidably connected to a cylinder 11; a sliding part 12 is slidably connected in the cylinder 11; the sliding part 12 can slide radially in the cylinder 11; When the sliding part 12 slides radially in the cylinder 11, the cylinder 11 and the sliding part 12 form an installation channel, through which the humidity detector can be fixed in the pipe. The cylindrical component 1 is a cylindrical tube with both ends open. One end of the cylindrical component 1 is provided with a flange. The sliding part 12 is movably connected to the interior of the cylindrical component 1, so that the sliding part 12 can move radially in the cylindrical component 1. When flue gas monitoring is required, the cylindrical component 1 is inserted into the pipe of the flue gas monitoring port. By aligning the flange of the cylindrical component 1 with the flange of the flue gas monitoring port, and then fixing the two with bolts, the cylindrical component 1 is installed in the flue gas monitoring port. In the initial state, the sliding part 12 and the installation channel section in the cylinder 11 are misaligned, which can close the flue gas monitoring port. When the humidity detector needs to be installed, the cylinder 11 is pressed down to make the sliding part 12 slide radially inside, thereby opening the installation channel. At this time, the humidity detector is inserted into the flue gas monitoring port through the installation channel to monitor the flue gas.

[0021] Furthermore, the sliding part 12 has parallel inclined surfaces 121 at its upper and lower ends, and the cylinder 11 has an inclined groove 111 that matches the inclined surface 121. The inner wall of the inclined groove 111 in the cylinder 11 is in contact with the inclined surface 121 of the sliding part 12. At the same time, the cylinder 11 is provided with moving cavities 113 on both sides of the inclined groove 111. The moving cavities 113 can provide sufficient space for the movement of the sliding part 12. Since the inclined surface 121 is in contact with the inclined groove 111 and the sliding part 12 is restricted to moving only radially, when the cylinder 11 moves downward, the sliding part 12 moves along the guide of the inclined groove 111. At this time, the top and bottom ends of the sliding part 12 move in the moving cavity 113.

[0022] Furthermore, the cylinder 11 has a mounting hole 112 and the sliding part 12 has a through groove 122. When the sliding part 12 moves radially, the mounting hole 112 and the through groove 122 correspond to form a mounting channel. The mounting hole 112 is located in the middle of the cylinder 11. A through groove 122 is provided at one end of the sliding column. The diameter of the through groove 122 shall not be less than the diameter of the mounting hole 112, so that after the sliding part 12 moves, the through groove 122 and the mounting hole 112 can form a through mounting channel. The position of the through groove 122 and the mounting hole 112 overlaps with the position of the inclined groove 111. When the through groove 122 and the mounting hole 112 are misaligned, the inclined surface 121 of the sliding part 12 is completely attached to the inner wall of the inclined groove 111, so that the top and bottom ends of the sliding part 12 can be sealed by the sliding part 12, thereby achieving the effect of sealing the flue gas monitoring port and preventing the leakage of flue gas after the flue gas sensor is pulled out.

[0023] Furthermore, a limiting member 13 is provided on the inner wall of the cylindrical part 1. The limiting member 13 is connected to the sliding part 12. The limiting member 13 restricts the sliding part 12 to move only radially. The limiting member 13 includes two sets of sleeves 131 fixedly disposed on the inner wall of the cylindrical part 1. The sleeves 131 are located in the moving cavity 113. A sliding rod 132 is slidably connected in the sleeves 131. The ends of the two sets of sliding rods 132 are fixedly connected to the cylinder 11 on opposite sides. Through the connection between the sliding rods 132 and the cylinder 11, the sleeves 131 can limit the movement of the sliding part 12. The sliding part 12 can only slide radially in the cylinder 11. A first elastic member 133 is fixedly disposed in one of the sleeves 131. The end of the first elastic member 133 abuts against the sliding rod 132. The first elastic member 133 is located on the side away from the through groove 122.

[0024] In the initial state, the cylindrical component 1 is fixedly connected to the pipe of the flue gas monitoring port via a flange, and the through groove 122 and the mounting hole 112 are misaligned. When the humidity detector needs to be installed, the cylinder 11 is pressed down. Due to the limiting effect of the sleeve 131 and the guiding effect of the inclined surface 121 on the sliding part 12, when the cylinder 11 moves downward, the sliding part 12 moves towards the side closer to the first elastic member 133. At the same time, the end of the sliding rod 132 abuts against the first elastic member 133 and contracts until the through groove 122 and the mounting hole 112 are axially overlapped. At this time, the installation channel is opened. Pressing down on the cylinder 11 keeps the installation channel open. When the channel is opened, the humidity detector is inserted into the installation channel. At this time, the humidity detector can extend into the flue gas monitoring port to monitor the flue gas. The humidity detector can be fixed to the top of the cylinder 11 by bolts or other means. When the humidity detector is pulled out of the installation channel, the first elastic element 133 can push the sliding part 12 to reset through the slide rod 132. Through the cooperation of the moving part and the cylinder 11, the cylinder 11 can slide upward to reset. This makes it easy to install the humidity detector, and when the humidity detector needs to be temporarily removed, it can also automatically seal the flue gas detection port to prevent flue gas leakage.

[0025] In some embodiments, the bottom of the cylinder 11 is also provided with a sealing part 2, which can seal the bottom end of the installation channel. The sealing part 2 is located at the bottom end of the mounting hole 112. By sealing the bottom end of the installation channel with the sealing part 2, the installation channel can be kept closed at the bottom before the humidity detector is inserted into the flue gas monitoring port, thereby further reducing the emission of flue gas from the flue gas monitoring port.

[0026] Furthermore, a conical groove 21 is provided at the top of the sealing part 2, and a guide member 22 is connected between the sealing part 2 and the cylinder 11. In this embodiment, there are two sets of sealing parts 2. The two sets of sealing parts 2 are symmetrically slidably connected to the bottom of the cylinder 11 through the guide member 22. When the two sets of sealing parts 2 are combined, they can completely cover the bottom end of the mounting hole 112, thereby sealing the bottom end of the mounting hole 112. At the same time, the top of both sets of sealing parts 2 is provided with a conical groove 21. When the two sets of sealing parts 2 are combined, the conical groove 21 closes into an inverted cone shape. After the installation channel is opened, when the humidity detector is inserted into the flue gas monitoring port, its end abuts against the inner wall of the conical groove 21, thereby causing the two sets of sealing parts 2 to move away from each other. This allows the sealing part 2 to prevent the flue gas from escaping while also facilitating the installation of the humidity detector.

[0027] Furthermore, the guide member 22 includes a fixing rod 221 fixedly mounted on the sealing part 2, and a fixing block 222 fixedly mounted on the bottom of the cylinder 11, with the fixing rod 221 slidably connected to the fixing block 222; wherein, the top of the sealing part 2 is in contact with the bottom of the cylinder 11, and a second elastic member 223 is sleeved on the outside of the fixing rod 221; Two sets of sealing parts 2 are fixedly connected to a fixing rod 221 on the side that is far apart. The fixing rod 221 passes through both sides of the fixing block 222. The two ends of the second elastic member 223 abut against the sealing part 2 and the fixing block 222 respectively. Due to the fit between the top of the sealing part 2 and the cylinder 11, and the limitation of the fixing rod 221 by the fixing block 222, the sealing part 2 moves horizontally. In the initial state, the second elastic element 223 pushes the two sets of sealing parts 2 to merge, so that the sealing parts 2 can cooperate with the sliding part 12 to double-seal the flue gas monitoring port, improving the sealing performance of the flue gas monitoring port. After the cylinder 11 moves downward and the installation channel is opened, the sealing parts 2 remain closed, further reducing the leakage of flue gas during installation. When the humidity detector enters the flue gas monitoring port through the installation channel, the end of the humidity detector abuts against the conical groove 21, causing the two sets of sealing parts 2 to move in opposite directions. At this time, the second elastic element 223 is abutted and contracted by the sealing parts 2, thus completing the installation of the humidity detector. When the humidity detector is disassembled, when the end of the humidity detector enters the installation channel, the second elastic element 223 pushes the sealing parts 2 to reset and close the flue gas monitoring port. By sealing the flue gas monitoring port simultaneously with the sliding part 12, the sealing performance of the flue gas monitoring port is improved. At the same time, the sealing parts 2 can further reduce the leakage of flue gas during the disassembly and assembly of the humidity detector.

[0028] In some embodiments, the inner wall of the cylindrical part 1 is also provided with a positioning part 3, and the bottom end of the cylinder 11 is provided with a locking part 4. When the positioning part 3 and the locking part 4 are engaged, the position of the cylinder 11 is fixed and the installation channel is in a connected state. The positioning part 3 is located below the cylinder 11. When the cylinder 11 is pressed down, the locking part 4 can engage with the positioning part 3, and Genorui fixes the position of the cylinder 11, keeping the installation channel open. This eliminates the need to continuously press the cylinder 11 during the installation of the humidity detector, making it easier for operators to install the humidity detector.

[0029] Furthermore, the positioning part 3 includes a hinge seat 31 fixedly disposed on the inner wall of the cylindrical part 1, a rotating block 32 rotatably connected to the hinge seat 31, and a limiting plate 33 fixedly disposed on the top of the hinge seat 31. The hinge seat 31 has a mounting cavity, and a rotating block 32 is rotatably connected to the end of the mounting cavity. A limiting plate 33 is located at the end of the hinge seat 31 and at the top of the rotating block 32. The limiting plate 33 can limit the maximum rotation angle of the rotating block 32. A first elastic piece 34 is fixedly provided on the inner wall of the mounting cavity away from the rotating block 32. The limiting part can abut against the other side of the rotating block 32. The first elastic piece 34 abuts against one side of the rotating block 32. Through the abutment of the first elastic piece 34 and the cooperation of the limiting plate 33, the position of the rotating block 32 can be limited when there is no external force.

[0030] Furthermore, the locking part 4 includes a fixing plate 41 located below the cylinder 11. Multiple sets of connecting plates 42 are connected between the fixing plate 41 and the cylinder 11. A ring 43 is sleeved on the outer side of the connecting plate 42. Multiple sets of second elastic pieces 44 are provided between the ring 43 and the fixing plate 41. The fixing plate 41 is located above the rotating block 32, so that the fixing plate 41 can contact the rotating block 32 during the movement of the cylinder 11. The two ends of the connecting plate 42 are fixedly connected to the fixing plate 41 and the cylinder 11 respectively. There are gaps between the multiple sets of connecting plates 42. The fixing rod 221 can pass through the multiple sets of connecting plates 42 and abut against the rotating block 32. The inner wall of the ring 43 fits against the outer side of the connecting plate 42, so that the ring 43 is limited by the connecting plate 42 and can only slide longitudinally. The two ends of the second elastic piece 44 are fixedly connected to the fixing plate 41 and the ring 43 respectively. In use, when pressing the cylinder 11 to open the mounting channel, the locking part 4 moves downward with the cylinder 11. During the movement of the locking part 4, the edge of the fixing plate 41 abuts against one side of the rotating block 32, causing the rotating block 32 to rotate away from the fixing plate 41. At this time, the rotating block 32 abuts against the first elastic piece 34 and deforms. When the cylinder 11 moves into place and the mounting channel is opened, continue pressing the cylinder 11 downward until it can no longer move. At this time, the mounting hole 112 and the through groove 122 are misaligned, and the ring 43 completely passes through the rotating block 32, and the first elastic piece 34 returns to its original position. The rotating block 32 is pushed to rotate. After rotating, the rotating block 32 is located above the ring 43. When it can no longer push the cylinder 11, it no longer applies force to it. The first elastic element 133 pushes the sliding part 12 to reset, thereby causing the cylinder 11 to move upward. After the cylinder 11 moves upward a certain distance, the ring 43 and the bottom end of the rotating block 32 come into contact. At this time, the rotation is blocked by the limiting plate 33 and cannot rotate upward. The position of the cylinder 11 is fixed. The mounting hole 112 and the through groove 122 overlap axially, and the mounting channel is opened. The second elastic element 223 under the ring 43 is in an undeformed state. After the installation channel is opened, the fixing rod 221 is located on one side of the rotating block 32. The humidity detector is inserted into it. When the humidity detector passes the sealing part 2, the two sets of sealing parts 2 are pushed to move away from each other. At this time, the fixing rod 221 slides and abuts against the rotating block 32, pushing the rotating block 32 to rotate away from the connecting plate 42. When the rotating block 32 rotates, it abuts against the ring 43 and moves downward. When the ring 43 moves downward, it abuts against the second elastic plate 44 and deforms. When the rotating block 32 rotates completely away from the ring 43, the second elastic plate 44 pushes the ring 43 to move upward and reset. The first elastic plate 34 pushes the rotating block 32 to reset. However, at this time, since the height of the ring 43 after reset is higher than the bottom of the rotating block 32, the rotating block 32 can only be pushed by the first elastic plate 34 to abut against the edge of the fixing plate 41. The rotating block 32 can no longer lock the position of the cylinder 11. When the humidity detector needs to be disassembled, simply pull it upwards. At this time, since the cylinder 11 is no longer locked, the first elastic element 133 pushes the sliding part 12 to reset, causing the cylinder 11 to rise and reset, the installation channel to be closed, and the sealing part 2 is also reset under the push of the guide 22, so that the flue gas monitoring port can be sealed in time.

[0031] When flue gas monitoring is not required, the flue gas monitoring port is fully sealed by the sealing part 2 and the sliding part 12 to prevent flue gas leakage. When flue gas monitoring is required, the installation channel can be opened simply by pressing the cylinder 11, which facilitates the installation of the humidity detector. The sealing part 2 can further reduce flue gas leakage during the installation process. At the same time, when the flue gas detector needs to be disassembled, it can be directly pulled out to reset the cylinder 11, the sliding part 12, and the sealing part 2, thereby enabling the flue gas monitoring port to be closed in time and reducing flue gas leakage. The quick disassembly and assembly of the humidity detector makes it more convenient and faster to add or change monitoring points, greatly improving the efficiency of monitoring operations.

[0032] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A device for monitoring the humidity of flue gas from a thermal power unit, characterized in that: include, A cylindrical component (1) is inserted into a pipe; The cylindrical component (1) is axially slidably connected to a cylinder (11); a sliding part (12) is slidably connected in the cylinder (11); the sliding part (12) can slide radially in the cylinder (11); When the sliding part (12) slides radially in the cylinder (11), the cylinder (11) and the sliding part (12) form an installation channel, through which the humidity detector can be fixed in the pipe.

2. The flue gas humidity monitoring device for thermal power units according to claim 1, characterized in that: The sliding part (12) has parallel inclined surfaces (121) at its upper and lower ends, and the cylinder (11) has an inclined groove (111) that matches the inclined surface (121).

3. The flue gas humidity monitoring device for thermal power units according to claim 2, characterized in that: The cylinder (11) has an installation hole (112), and the sliding part (12) has a through groove (122). When the sliding part (12) moves radially, the installation hole (112) and the through groove (122) correspond to form an installation channel.

4. The flue gas humidity monitoring device for thermal power units according to claim 3, characterized in that: The bottom of the cylinder (11) is also provided with a sealing part (2), which can seal the bottom of the installation channel.

5. The flue gas humidity monitoring device for thermal power units according to claim 4, characterized in that: The inner wall of the cylindrical component (1) is also provided with a positioning part (3), and the bottom end of the cylinder (11) is provided with a locking part (4). When the positioning part (3) and the locking part (4) are engaged, the position of the cylinder (11) is fixed and the installation channel is in a connected state.

6. The flue gas humidity monitoring device for thermal power units according to claim 5, characterized in that: The inner wall of the cylindrical part (1) is provided with a limiting member (13), which is connected to the sliding part (12). The limiting member (13) restricts the sliding part (12) to move only radially.

7. The flue gas humidity monitoring device for thermal power units according to claim 6, characterized in that: The positioning part (3) includes a hinge seat (31) fixedly disposed on the inner wall of the cylindrical part (1), a rotating block (32) is rotatably connected to the hinge seat (31), and a limiting plate (33) is fixedly disposed on the top of the hinge seat (31).

8. The flue gas humidity monitoring device for thermal power units according to claim 7, characterized in that: The locking part (4) includes a fixing plate (41) located below the cylinder (11), and multiple sets of connecting plates (42) are connected between the fixing plate (41) and the cylinder (11). A ring (43) is sleeved on the outside of the connecting plate (42), and multiple sets of second elastic pieces (44) are provided between the ring (43) and the fixing plate (41).

9. The flue gas humidity monitoring device for thermal power units according to claim 4 or 5, characterized in that: The top of the sealing part (2) is provided with a conical groove (21), and a guide (22) is connected between the sealing part (2) and the cylinder (11).

10. The flue gas humidity monitoring device for thermal power units according to claim 9, characterized in that: The guide member (22) includes a fixing rod (221) fixedly mounted on the sealing part (2), and a fixing block (222) fixedly mounted on the bottom of the cylinder (11). The fixing rod (221) is slidably connected to the fixing block (222). The top of the sealing part (2) is attached to the bottom of the cylinder (11), and a second elastic element (223) is sleeved on the outside of the fixing rod (221).

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