Pipeline assembly

Abstract

The utility model discloses a pipeline assembly. The technical problem that in the prior art, part of pipelines in an existing flue gas treatment system are prone to being blocked by large particles is solved. The pipeline assembly comprises a first box body, a second box body and a grating plate. An air inlet pipe and an air outlet pipe are arranged at the two ends of the first box body. The grating plate is arranged in the first box body, and the grating plate is located between the air inlet pipe and the air outlet pipe so as to divide the first box body into an air inlet bin and an air outlet bin; the second box body is arranged below the first box body, and the second box body is communicated with the air inlet bin through a through hole. Large-particle blockages can be collected and removed, the risk that the flue gas pipeline is blocked is reduced, and the device is easy to install.

Description

Technical Field

[0001] This application belongs to the technical field of dust removal equipment components, specifically relating to a pipeline component. Background Technology

[0002] Most thermal power plants employ a wet acid removal + SCR (Selective Catalytic Reduction) external denitrification process to treat the flue gas generated after boiler combustion. The treated flue gas is then sent to a bag filter, where dust adheres to the filter. When the bag filter is backflushed, the dust is pneumatically conveyed into the ash conveying pipeline and transported to a silo for centralized processing. During the acid removal process, large particles often appear due to process limitations. These particles enter the ash conveying pipeline along with the dust during pneumatic conveying. These large particles tend to accumulate at pipeline bends, eventually causing narrowing of the pipeline, affecting the ash removal efficiency, and in severe cases, clogging the entire pipeline, causing the pneumatic ash removal system to stop working, and ultimately affecting the stable operation of the waste-to-energy power plant. Summary of the Invention

[0003] To address the technical problem that some pipes in current flue gas treatment systems are easily clogged by large particles, this application provides a pipe assembly.

[0004] In a first aspect of this application, a pipe assembly is provided, comprising:

[0005] The first housing has an air inlet pipe and an air outlet pipe at both ends;

[0006] A grating plate is disposed in the first housing, and the grating plate is located between the air inlet pipe and the air outlet pipe to divide the first housing into an air inlet chamber and an air outlet chamber.

[0007] The second housing is located below the first housing, and the second housing is connected to the air intake chamber through a through hole.

[0008] In some embodiments, the piping assembly further includes a baffle disposed in the first housing or the second housing, the baffle being operable to open and close the through hole.

[0009] In some embodiments, a rotating shaft is provided near the through hole in the first housing, a baffle is provided on the rotating shaft, and a driving member is connected to the rotating shaft. The driving member drives the rotating shaft to rotate, thereby causing the baffle to open and close the through hole.

[0010] In some embodiments, the second housing is provided with an arc-shaped channel, and when the driving member drives the rotating shaft to rotate, the baffle rotates within the arc-shaped channel.

[0011] In some embodiments, the through hole is a square hole, and the radius of the arc-shaped channel is equal to the radius of the baffle when it rotates.

[0012] In some embodiments, the grille is disposed on the rotating shaft, and the included angle between the grille and the baffle is 90°. When the baffle divides the first housing into an air inlet chamber and an air outlet chamber, the baffle blocks the through hole. When the grille is rotated to cover the through hole, the baffle is located inside the second housing.

[0013] In some embodiments, the drive element is a handle, and the outer wall of the first or second housing is also provided with a plurality of stops so that the handle can be kept in a serpentine position.

[0014] In some embodiments, a ash discharge pipe is provided at the bottom of the second box.

[0015] In some embodiments, the side wall of the second housing is provided with an observation hole.

[0016] In some embodiments, both the air inlet pipe and the air outlet pipe are provided with flanges.

[0017] According to one or more embodiments of this application, the pipeline assembly blocks particles larger than the aperture of the grid plate. Large particles that cannot pass through the grid plate will eventually fall under the action of gravity and eventually fall into the second box. At this time, the blocking of large particles is completed, and large particles will not enter other pipes of the pipeline system, so as not to cause blockage of the pipeline system. This is conducive to the long-term good operation of the entire pipeline system. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a pipe assembly in one or more embodiments of this application is shown.

[0019] Figure 2 It shows Figure 1 A schematic diagram of the pipe assembly in the diagram.

[0020] Explanation of reference numerals in the attached drawings: 1-First box, 11-Inlet chamber, 12-Outlet chamber, 2-Inlet pipe, 3-Outlet pipe, 4-Grate plate, 5-Second box, 51-Arc-shaped channel, 52-Observation hole, 53-Ash discharge pipe, 6-Flange, 7-Baffle, 8-Rotating shaft, 9-Handle, 10-Stop. Detailed Implementation

[0021] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Please see Figure 1 and Figure 2 According to a first aspect of this application, a pipe assembly is provided, including a first housing 1, a second housing 5, and a grating plate 4. An air inlet pipe 2 and an air outlet pipe 3 are provided at both ends of the first housing 1. The grating plate 4 is disposed inside the first housing 1 and is located between the air inlet pipe 2 and the air outlet pipe 3 to divide the first housing 1 into an air inlet chamber 11 and an air outlet chamber 12. The second housing 5 is disposed below the first housing 1, and the second housing 5 is connected to the air inlet chamber 11 through a through hole 13.

[0023] The first housing 1 serves as a channel for gas passage, with the inlet pipe 2 and outlet pipe 3 used for connection to pipes in the piping system. A grid plate 4 is located between the inlet pipe 2 and outlet pipe 3, dividing the space within the first housing 1 into an inlet chamber 11 and an outlet chamber 12. The first housing 1 can be a straight pipe or a curved pipe. The inlet pipe 2 and outlet pipe 3 can be located at opposite ends of the first housing 1 or at adjacent ends, allowing the piping assembly of this embodiment to be installed at both straight sections and bends in the piping system.

[0024] When large particles of impurities enter the first chamber 1 from the air inlet pipe 2, the grid plate 4 will block particles with a diameter larger than the aperture of the grid plate 4. The large particles of impurities that cannot pass through the grid plate 4 will eventually fall under the action of gravity and eventually fall into the second chamber 5. At this time, the blocking of large particles of impurities is completed. Large particles of impurities will not enter other pipes of the pipeline system, so they will not cause blockage of the pipeline system and will help the entire pipeline system maintain good operation for a long time.

[0025] By connecting the inlet pipe 2 and the outlet pipe 3 to the piping system, the piping assembly can be installed in the existing piping system. This can be achieved by cutting the existing piping and then installing the piping assembly through welding or a detachable connection. Therefore, in some embodiments, both the inlet pipe 2 and the outlet pipe 3 are equipped with flanges 6. Similarly, corresponding flanges 6 are provided at the locations within the piping system where the piping assembly of this embodiment is installed. The piping assembly can be installed onto the piping system by connecting bolts to the flanges 6.

[0026] In some embodiments, a discharge pipe 53 is provided at the bottom of the second chamber 5. The discharge pipe 53 is equipped with a valve, which can be opened periodically to remove large particulate impurities stored in the second chamber 5. Of course, to facilitate operators in understanding the amount of impurities accumulated in the second chamber 5, in some embodiments, an observation hole 52 is provided on the side wall of the second chamber 5. The observation hole is equipped with a transparent light-transmitting element, allowing operators to observe the total amount of large-diameter impurities stored in the second chamber 5 through the observation hole 52 to determine whether it is necessary to open the discharge pipe 53.

[0027] Considering that the air entering the first housing 1 from the air inlet pipe 2 may affect large-diameter impurities in the second housing 5, in some embodiments, the pipe assembly also includes a baffle 7 disposed in the first housing 1 or the second housing 5, the baffle 7 being operable to open and close the through hole 13.

[0028] Specifically, when baffle 7 blocks the through hole 13, the airflow entering the first chamber 1 cannot enter the second chamber 5. At the same time, after the airflow passes through the grid plate 4, the large particles of impurities blocked by the grid plate 4 will eventually fall onto baffle 7. Periodically removing baffle 7 from the through hole 13 allows the large particles of impurities on baffle 7 to fall into the second chamber 5 through the through hole 13. Once most of the impurities have fallen into the second chamber 5, baffle 7 can be used to block the through hole 13 again.

[0029] For example, in some embodiments, the baffle 7 can be slidably disposed on the bottom wall of the first housing 1 along the gas flow direction of the first housing 1 and located below the grille plate 4. The reciprocating movement of the baffle 7 can open and close the through hole 13. As the baffle 7 moves towards the air outlet chamber 12, the impurities accumulated on the baffle 7 will be blocked by the bottom end of the grille plate 4. After most of the baffle 7 has moved into the air outlet chamber 12, the impurities will fall into the second housing 5. The baffle 7 can block the through hole 13 by moving towards the air inlet chamber 11. The movement of the baffle 7 can be driven by a hydraulic mechanism.

[0030] Please see Figure 2 In some embodiments, a rotating shaft 8 is provided near the through hole 13 in the first housing 1, and a baffle 7 is provided on the rotating shaft 8. The rotating shaft 8 is connected to a driving component, and the driving component drives the rotating shaft 8 to rotate so that the baffle 7 can open and close the through hole 13.

[0031] That is, the through hole 13 is opened and closed by rotating the baffle 7. After the driving component drives the baffle 7 to rotate towards the second box 5, the impurities accumulated on the top surface of the baffle 7 will fall down along the inclined surface of the baffle 7 under the action of gravity.

[0032] In some embodiments, the second housing 5 is provided with an arc-shaped channel 51, and when the drive member drives the rotating shaft 8 to rotate, the baffle 7 rotates within the arc-shaped channel 51.

[0033] Understandably, when impurities fall into the arc-shaped channel 51, the arc-shaped channel 51 will act as a buffer, which can reduce the dust caused by the impurities falling into the second box 5.

[0034] In some embodiments, the through hole 13 is a square hole, and the radius of the arc-shaped channel 51 is equal to the radius of the baffle 7 when it rotates. The curvature of the arc-shaped channel 51 does not exceed π / 2. Due to the combined constraint of the arc-shaped channel 51 and the baffle 7, the falling of impurities on the baffle 7 is affected by the rotational speed of the shaft 8. By controlling the rotational speed of the shaft 8, the falling of impurities can be controlled, further reducing dust emission. When the baffle 7 rotates into the second housing 5 and moves away from the arc-shaped channel 51, impurities will fall through the gap between the arc-shaped channel 51 and the baffle 7, eventually leaving the arc-shaped channel 51 and falling to the bottom of the second housing 5.

[0035] Considering that large-diameter impurities may easily remain on the grating plate 4 during long-term use, in some embodiments, the grating plate 4 is disposed on the rotating shaft 8, and the included angle between the grating plate 4 and the baffle 7 is 90°. When the baffle 7 divides the first housing 1 into the air inlet chamber 11 and the air outlet chamber 12, the baffle 7 blocks the through hole 13; when the grating plate 4 rotates to cover the through hole 13, the baffle 7 is located inside the second housing 5.

[0036] That is, during the rotation of the baffle 7 driven by the driving component, the grille 4 will also rotate together. When the baffle 7 is rotated to a vertical position, the grille 4 will contact the through hole 13. Impurities on the grille 4 will fall into the arc-shaped channel 51 or the second housing 5 under the action of gravity. In addition, through small-angle reciprocating rotation, the grille 4 can strike the bottom wall of the first housing 1 around the through hole 13, so that the impurities on the grille 4 can fall off the grille 4 under the action of inertia. When the driving component drives the baffle 7 to reset and block the through hole 13, the grille 4 will also reset to the initial position and continue to filter the gas entering the first housing 1 from the intake pipe 2.

[0037] The driving component can be a motor or a handle 9. In some embodiments, the driving component is a handle 9, and the outer wall of the first housing 1 or the second housing 5 is also provided with a plurality of stop members 10 so that the handle 9 can be kept in a set position. The set position can be the position where the baffle 7 covers the through hole, or the position where the baffle 7 is located inside the second housing 5. For example, when the operator drives the rotating shaft 8 to rotate by the handle 9 and the baffle 7 finally covers the through hole 13, the handle 9 is connected to the stop member 10. The stop member 10 limits the handle 9 and keeps the handle 9 in the current position, so that the rotating shaft 8 does not rotate. Correspondingly, the baffle 7 will also remain in the position of covering the through hole 13.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A pipe assembly, characterized in that, include: The first housing has an air inlet pipe and an air outlet pipe at both ends; A grating plate is disposed in the first housing, and the grating plate is located between the air inlet pipe and the air outlet pipe to divide the first housing into an air inlet chamber and an air outlet chamber. The second housing is located below the first housing, and the second housing is connected to the air intake chamber through a through hole.

2. The pipe assembly according to claim 1, characterized in that, The pipe assembly also includes a baffle plate disposed in the first housing or the second housing, the baffle plate being operable to open and close the through hole.

3. The pipe assembly according to claim 2, characterized in that, The first housing has a rotating shaft near the through hole, the baffle is disposed on the rotating shaft, and the rotating shaft is connected to a driving component. The driving component drives the rotating shaft to rotate, which causes the baffle to open and close the through hole.

4. The pipe assembly according to claim 3, characterized in that, The second housing is provided with an arc-shaped channel. When the driving component drives the rotating shaft to rotate, the baffle rotates within the arc-shaped channel.

5. The pipe assembly according to claim 4, characterized in that, The through hole is a square hole, and the radius of the arc-shaped channel is equal to the radius of the baffle when it rotates.

6. The pipe assembly according to claim 5, characterized in that, The grating plate is disposed on the rotating shaft, and the included angle between the grating plate and the baffle is 90°. When the baffle divides the first box into an air inlet chamber and an air outlet chamber, the baffle blocks the through hole; when the grating plate rotates to cover the through hole, the baffle is located inside the second box.

7. The pipe assembly according to claim 3, characterized in that, The driving component is a handle, and the outer wall of the first or second housing is also provided with multiple stop components so that the handle can be kept in a set position.

8. The pipe assembly according to any one of claims 1-7, characterized in that, The bottom of the second box is equipped with an ash discharge pipe.

9. The pipe assembly according to any one of claims 1-7, characterized in that, The second housing has an observation hole on its side wall.

10. The pipe assembly according to any one of claims 1-7, characterized in that, Both the air inlet pipe and the air outlet pipe are equipped with flanges.

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