Noise reduction blind plate and emptying pipeline comprising same

Abstract

The utility model provides a noise reduction blind plate and a blow-down pipeline comprising the same, the noise reduction blind plate is installed on a synthesis gas blow-down pipeline behind a coal gasification scrubber tower, the noise reduction blind plate comprises a noise reduction pore plate, the noise reduction pore plate comprises a plurality of noise reduction holes formed in the center of the noise reduction pore plate, and the noise reduction holes are communicated with the noise reduction pore plate. The noise reduction pore plate is used for limiting the flow of a medium in the emptying pipeline or reducing sudden pressure change of the medium in the emptying pipeline, and the noise reduction pore plate sealing surface is arranged on the edge of the noise reduction pore plate; and the blind plate comprises a blind plate sealing face arranged on the edge of the blind plate, the blind plate is used for blocking flowing of a medium in the emptying pipeline, and the noise reduction hole plate and the blind plate are installed at the same site of the emptying pipeline. The synthesis gas emptying pipeline can be arranged in the compact gasification frame under the condition that large-scale transformation is not carried out, so that the number of pipe fittings used on the device pipeline is reduced by three, the flange welding amount and the installation workload during construction are reduced, meanwhile, a potential leakage point is also eliminated, and the production efficiency is improved. And a reference scheme is provided for technical upgrading of devices of the same type.

Description

Technical Field

[0001] The utility model relates to the technical field of process noise reduction, in particular to a noise reduction blind plate and a vent pipeline containing the same. Background Art

[0002] In the coal gasification process, to address the sudden decrease in the syngas receiving capacity of downstream units, a syngas vent line is typically installed at the outlet of the scrubber. The safety vent line features an automatic valve with a noise-reducing orifice plate and an "8" blind plate. Applied behind the vent automatic valve on the large-diameter vent line of a process unit, the noise-reducing orifice plate can limit the flow of process media through the automatic vent valve, increase the pressure downstream of the vent automatic valve, reduce sudden changes in vent line pressure at the valve, and adjust the flow pattern of process media in the vent line, ultimately reducing noise and vibration in the unit. The "8" blind plate is also commonly used on large-diameter vent lines. Normally, the full-diameter end is used to occupy the gap to keep the line unobstructed. When the unit needs to be isolated for shutdown and maintenance, a blind plate of equal thickness is replaced at the other end to cut off the line and isolate the unit.

[0003] In the actual vent line layout of the device, it is usually necessary to install both a noise reduction orifice plate and an 8-shaped blind plate after the automatic control valve of the safety vent line. The noise reduction orifice plate is arranged after the pipe diameter diffusion section of the automatic control valve, and two large-diameter flanges are required to install the noise reduction orifice plate. The 8-shaped blind plate is arranged after the noise reduction orifice plate, and two large-diameter flanges are also required to install it. Due to the large diameter of the synthesis gas vent line, the above-mentioned equipment is huge, making it difficult to arrange it in the compact gasification unit required by the owner. In addition, this design solution requires a large investment in the vent line and places high demands on the layout and construction of the vent line. At the same time, the connection surface of the large-diameter flange also increases the potential risk of leakage. Utility Model Content

[0004] In view of this, the utility model provides a noise reduction blind plate and a vent pipeline containing the same, which solves the disadvantages of the prior art that the synthesis gas vent pipeline is difficult to arrange in a compact gasification device, and the noise reduction orifice plate is arranged behind the valve pipe diameter diffusion section, and two large-diameter flanges are required to install the noise reduction orifice plate. The 8-shaped blind plate is arranged behind the noise reduction orifice plate, and two large-diameter flanges are also required to install it, which leads to a large investment in this part of the vent pipeline. At the same time, the connection surface of the large-diameter flange also increases the potential leakage risk. Technical problems.

[0005] According to the first aspect of the utility model, the utility model provides a noise reduction blind plate, which is installed on the synthesis gas venting pipeline after the coal gasification scrubber, and the venting pipeline is installed with a venting automatic control valve and a manual switch valve, and the installation position of the noise reduction blind plate is located between the venting automatic control valve and the manual switch valve, and the noise reduction blind plate includes: a noise reduction orifice plate, the noise reduction orifice plate includes a plurality of noise reduction holes opened in the center of the noise reduction orifice plate, the noise reduction holes are used to limit the flow of the medium in the venting pipeline or reduce the pressure mutation of the medium in the venting pipeline, and a noise reduction orifice plate sealing surface arranged at the edge of the noise reduction orifice plate; a blind plate, the blind plate includes a blind plate sealing surface arranged at the edge of the blind plate, the blind plate is used to block the flow of the medium in the venting pipeline; wherein the thickness of the blind plate sealing surface is the same as the thickness of the noise reduction orifice plate sealing surface; the noise reduction orifice plate and the blind plate are installed at the same position of the venting pipeline.

[0006] In a possible implementation, the noise reduction blind plate further includes a flange, and the noise reduction orifice plate sealing surface of the noise reduction orifice plate and the blind plate sealing surface of the blind plate are sealingly connected to the flange.

[0007] In a possible implementation, the noise reduction blind plate further includes a fastener, which fixes the noise reduction orifice plate and the blind plate to the vent pipeline.

[0008] In a possible implementation, the noise reduction blind plate further includes a gasket, which is provided at the connection between the flange, the noise reduction orifice plate sealing surface of the noise reduction orifice plate, and the blind plate sealing surface of the blind plate.

[0009] In a possible implementation, the gasket is made of a graphite wound gasket.

[0010] In one possible implementation, a reducing pipe is further installed on the vent pipeline. The reducing pipe is installed on the side of the vent automatic control valve close to the noise reduction blind plate. One end of the reducing pipe is connected to the vent automatic control valve, and the other end of the reducing pipe is connected to the vent pipeline.

[0011] In a possible implementation, the noise reduction blind plate further includes: a connecting plate, one end of which is fixedly connected to the noise reduction orifice plate, and the other end of which is fixedly connected to the blind plate;

[0012] According to the second aspect of the utility model, the utility model provides a vent pipeline of a coal gasification washing tower, on which a noise reduction blind plate as described above is provided, and the noise reduction blind plate includes a noise reduction orifice plate and a blind plate, and the noise reduction orifice plate and the blind plate are installed at the same position between the vent automatic control valve and the manual switch valve.

[0013] In one possible implementation, the noise reduction blind plate is used as follows: when the coal gasification scrubber device is operating normally, the noise reduction orifice plate end of the noise reduction blind plate is installed on the vent pipeline to reduce the noise and vibration of the device; when the device needs to be isolated, the noise reduction orifice plate end is removed and the blind plate end of the noise reduction blind plate is installed to cut off the vent pipeline.

[0014] In one possible implementation, when the diameter of the vent line is above DN200, no connecting plate is provided between the noise reduction orifice plate and the blind plate; when the diameter of the vent line is below DN200, a connecting plate is provided between the noise reduction orifice plate and the blind plate.

[0015] The utility model provides a noise reduction blind plate and a vent pipeline containing the same, the noise reduction blind plate being installed on the synthesis gas vent pipeline after the coal gasification scrubber, the vent pipeline being installed with a vent automatic control valve and a manual switch valve, the installation position of the noise reduction blind plate being located between the vent automatic control valve and the manual switch valve, the noise reduction blind plate comprising: a noise reduction orifice plate, the noise reduction orifice plate comprising a plurality of noise reduction holes opened in the center of the noise reduction orifice plate, the noise reduction holes being used to limit the flow of a medium in the vent pipeline or to reduce a sudden pressure change of the medium in the vent pipeline, and a noise reduction orifice plate sealing surface being arranged at the edge of the noise reduction orifice plate; a blind plate, the blind plate comprising a blind plate sealing surface arranged at the edge of the blind plate, the blind plate being used to block the flow of the medium in the vent pipeline; wherein the thickness of the blind plate sealing surface is the same as the thickness of the noise reduction orifice plate sealing surface; the noise reduction orifice plate and the blind plate are installed at the same position of the vent pipeline. The utility model installs the noise reduction orifice plate and the blind plate at the same position of the vent pipeline, so that the synthesis gas vent pipeline can be arranged in a compact gasification device, and the number of pipe fittings used in the device pipeline is reduced by 3, thereby reducing the investment in this part of the device, reducing the flange welding amount and installation workload during construction, and also eliminating a potential leakage point. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows a schematic structural diagram of a noise reduction blind plate provided by an embodiment of the present utility model;

[0017] Figure 2 The figure shows a side view of the connection between the noise reduction blind plate and the flange provided by one embodiment of the utility model;

[0018] Figure 3 The figure shows a schematic diagram of the connection between the noise reduction blind plate and the flange provided by one embodiment of the utility model;

[0019] Figure 4 The figure shows a structural schematic diagram of a noise reduction blind plate provided by another embodiment of the present utility model;

[0020] Figure 5Shown is a schematic diagram of the installation structure of the noise reduction blind plate provided in one embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Noise reduction blind plate; 11. Noise reduction orifice plate; 111. Noise reduction hole; 112. Noise reduction orifice plate sealing surface; 12. Blind plate; 121. Blind plate sealing surface; 13. Connecting plate;

[0023] 2. Flange; 3. Fasteners; 4. Gasket; 5. Automatic control valve; 6. Reducing pipe; 7. Manual switch valve; 8. Vent pipeline. DETAILED DESCRIPTION

[0024] In the description of the present invention, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present invention, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, movement situation, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or equipment that includes a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or equipment.

[0025] In addition, references to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the 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.

[0027] In order to cope with the sudden drop in the ability of the downstream unit of the coal gasification process to receive synthesis gas, the synthesis gas vent line is usually set at the outlet of the scrubber. There are automatic control valves with noise reduction orifice plates and 8-shaped blind plates on the safety vent line. The noise reduction orifice plate is mostly used after the diffusion section of the vent automatic control valve on the large-diameter vent line of the process device. The installation of the noise reduction orifice plate can increase the pressure after the valve, reduce the sudden change of the vent line pressure on the valve, and can also modify the flow form of the process medium in the vent line, and ultimately achieve the purpose of reducing the noise and vibration of the device; the 8-shaped blind plate is usually installed behind the noise reduction orifice plate. The gasket end is usually used to occupy the position to keep the pipeline unobstructed. When the isolation device is required, the blind plate end of the same thickness at the other end is replaced to cut off the pipeline to isolate the device. In the layout of the synthesis gas vent line, the noise reduction orifice plate and the 8-shaped blind plate will be installed at the same time after the vent valve of the large-diameter vent pipeline. The noise reduction orifice plate is arranged after the diffusion section of the valve vent valve pipe diameter. The 8-shaped blind plate is arranged behind the noise reduction orifice plate and is also clamped and installed by two large-diameter flanges. These devices are large in size and have high procurement and construction costs, resulting in a large space occupation and investment for this part of the vent pipeline, and also puts forward higher requirements for the layout and construction of the vent pipeline. At the same time, the connection surface of the large-diameter flange has a potential leakage risk because both the noise reduction orifice plate and the 8-shaped blind plate need to be connected with the flange to form a connection surface. Therefore, in order to reduce the investment in the device and facilitate the layout and construction of the pipeline, the noise reduction orifice plate and the blind plate are combined into one component, so that the synthesis gas vent pipeline can be arranged in a compact gasification device, and the vent pipeline can reduce one layout content during design.

[0028] Figure 1 The figure shows a schematic structural diagram of a noise reduction blind plate provided by an embodiment of the present utility model; Figure 4 The figure shows a structural schematic diagram of a noise reduction blind plate provided by another embodiment of the present utility model; Figure 5 FIG. 1 is a schematic diagram of the installation structure of the noise reduction blind plate provided by an embodiment of the present invention; Figure 1 As shown, combined Figure 4 as well as Figure 5The noise reduction blind plate 1 is installed on the synthesis gas venting pipeline 8 after the coal gasification scrubber. The venting pipeline 8 is installed with a venting automatic control valve 5 and a manual switch valve 7. The venting automatic control valve 5 and the manual switch valve 7 are arranged in sequence along the flow direction of the synthesis gas. The installation position of the noise reduction blind plate 1 is located between the venting automatic control valve 5 and the manual switch valve 7. The noise reduction blind plate 1 includes: a noise reduction orifice plate 11, and the noise reduction orifice plate 11 includes a plurality of noise reduction holes 111 opened in the center of the noise reduction orifice plate 11. The noise reduction holes 111 are used to limit the flow rate of the medium in the venting pipeline 8 or reduce the medium in the venting pipeline 8. pressure mutation, and the noise reduction orifice plate sealing surface 112 arranged on the edge of the noise reduction orifice plate 11; the blind plate 12, the blind plate 12 includes a blind plate sealing surface 121 arranged on the edge of the blind plate 12, and the blind plate 12 is used to block the flow of the medium in the vent pipeline 8; the connecting plate 13, one end of the connecting plate 13 is fixedly connected to the noise reduction orifice plate 11, and the other end of the connecting plate 13 is fixedly connected to the blind plate 12; wherein, the thickness of the blind plate sealing surface 121 is the same as the thickness of the noise reduction orifice plate sealing surface 112; the noise reduction orifice plate 11 and the blind plate 12 are installed at the same position of the vent pipeline 8. By installing the noise reduction orifice plate and the blind plate at the same location on the vent line 8, the synthesis gas vent line can be arranged in a compact gasification device, and the number of pipe fittings used in the device pipeline is reduced by 3. Specifically, the noise reduction orifice plate 11 and the two flanges connected to the noise reduction orifice plate 11 on the vent line 8 are reduced, which reduces the investment in this part of the device, reduces the flange welding amount and installation workload during construction, and also eliminates a potential leakage point. It also provides a reference solution for the technical upgrade of similar devices.

[0029] In a possible implementation, the noise reduction blind plate 1 also includes a flange 2, and the noise reduction orifice sealing surface 112 of the noise reduction orifice 11 and the blind plate sealing surface 121 of the blind plate 12 are sealed and connected to the flange 2. Specifically, the flange 2 is used for connection between pipe ends, and the flange 2 is used to fix the noise reduction orifice 11 or the blind plate 12 to the vent pipeline 8. During the specific construction and installation process, the two ends of the noise reduction orifice sealing surface 112 are first aligned with the flange, and then the flange is aligned with the vent pipeline 8 for installation. In the compact gasification device, the length of the automatic control valve 5 to the 8-shaped blind plate is within 5 meters. If the noise reduction orifice plate and the 8-shaped blind plate are set at the same time within 5 meters, not only the investment is large, but also higher requirements are placed on the layout and construction of the vent pipeline. At the same time, two connection surfaces are formed, so that The vent pipeline has a potential leakage risk. The utility model combines the noise reduction orifice plate 11 and the blind plate 12 into one component, which can reduce the space occupied by the vent pipeline while reducing one layout content in the design of the vent pipeline, thereby improving the flexibility of the vent pipeline layout, while also reducing the number of pipe fittings used, reducing the investment in this part of the device, and reducing the amount of flange welding and installation workload during construction. Since the noise reduction orifice plate 11 and the blind plate 12 are combined into one component, only this one pipe fitting needs to be installed during the construction process, eliminating one potential leakage point.

[0030] Figure 2 The figure shows a side view of the connection between the noise reduction blind plate and the flange provided by one embodiment of the utility model; Figure 3 The figure shows a schematic diagram of the connection between the noise reduction blind plate and the flange provided by an embodiment of the present invention; Figure 2-3 As shown, the noise reduction blind plate 1 also includes a fastener 3, which fixes the noise reduction orifice plate 11 and the blind plate 12 on the vent pipeline 8. In this embodiment, the fastener 3 can be a fully threaded stud and nut, which fixes the noise reduction orifice plate 11 and the blind plate 12 on the vent pipeline 8.

[0031] In one possible implementation, the noise reduction blind plate 1 also includes a gasket 4, which is arranged at the connection between the flange 2 and the noise reduction orifice plate sealing surface 112 of the noise reduction orifice plate 11 and the blind plate sealing surface 121 of the blind plate 12. The flange 2 and the noise reduction orifice plate 11 are sealed by the gasket 4 to prevent leakage of the device vent pipeline.

[0032] In one possible implementation, the gasket 4 is made of graphite wound gasket. As a sealing material under high pressure, high temperature, high corrosion and other working conditions, the graphite wound gasket can reduce leakage of the device vent pipeline and prevent energy waste and environmental pollution.

[0033] In one possible implementation, a reducing pipe 6 is also installed on the vent pipeline 8. The reducing pipe 6 is installed on the side of the vent automatic control valve 5 close to the noise reduction blind plate 1. One end of the reducing pipe 6 is connected to the vent automatic control valve 5, and the other end of the reducing pipe 6 is connected to the vent pipeline 8.

[0034] In one possible implementation, the noise reduction blind plate further includes a connecting plate 13, one end of which is fixedly connected to the noise reduction orifice plate 11, and the other end of which is fixedly connected to the blind plate 12. Specifically, the noise reduction orifice plate 11 and the blind plate 12 can be arranged as one piece or as separate pieces, depending on the size of the vent line 8 and usage requirements. When the vent line 8 has a diameter of DN200 or larger, the noise reduction orifice plate 11 and the blind plate 12 are arranged separately. When the vent line has a diameter of DN200 or smaller, the noise reduction orifice plate 11 and the blind plate 12 can be arranged as one piece.

[0035] The utility model also provides a vent line for a coal gasification scrubber, on which a noise reduction blind plate is provided. The noise reduction blind plate includes a noise reduction orifice plate 11 and a blind plate 12. The noise reduction orifice plate 11 and the blind plate 12 are installed at the same location between the vent automatic control valve 5 and the manual switch valve 7. By installing the noise reduction orifice plate 11 end and the blind plate 12 end of the noise reduction blind plate at the same location between the vent automatic control valve 5 and the manual switch valve 7, the material and construction amount of the vent line can be reduced, the layout content of the vent line can be reduced, a potential leakage point is eliminated, the vent line layout is made more flexible, and on-site construction and installation are made more convenient.

[0036] The utility model also provides a method for using the noise reduction blind plate. When the coal gasification scrubber device is operating normally, the noise reduction orifice plate end of the noise reduction blind plate is installed on the vent pipeline 8 to reduce the noise and vibration of the device; when the device needs to be isolated, the noise reduction orifice plate end is removed, and the blind plate end of the noise reduction blind plate is installed to cut off the vent pipeline 8. When the vent pipeline diameter is above DN200, the vent pipeline diameter is large, which is inconvenient to operate during use. The noise reduction orifice plate 11 and the blind plate 12 can be set separately, and no connecting plate 13 is provided between the noise reduction orifice plate 11 and the blind plate 12. When the vent pipeline diameter is below DN200, in order to prevent the noise reduction orifice plate 11 and the blind plate 12 from being lost, the noise reduction orifice plate 11 and the blind plate 12 can be set as one piece, and a connecting plate 13 is provided between the noise reduction orifice plate 11 and the blind plate 12.

[0037] The noise reduction blind plate 1 of the present invention is constructed as a noise reduction orifice plate 11 for noise reduction and a blind plate 12 for isolation. The process venting pipeline is respectively arranged with an automatic control valve 5, a reducing pipe 6, a noise reduction blind plate 1, and a manual switch valve 7 according to the flow direction of the medium. When the device is operating normally, the noise reduction orifice end of the noise reduction blind plate is installed on the venting pipeline 8 to reduce the sudden change of the pressure drop before the plate and adjust the flow form of the process medium in the venting pipeline 8, thereby finally achieving the purpose of reducing the noise and vibration of the device. When the device needs to be isolated, such as when the device is installed When the equipment fails and needs to be repaired, the noise reduction orifice plate end needs to be removed and the blind plate end of the noise reduction blind plate needs to be installed to achieve the cutoff of the vent pipeline 8 and the sealing of the device. Compared with the traditional solution, the synthesis gas vent pipeline is arranged in a compact gasification device, which reduces one layout content on the vent pipeline of the device and the number of pipe fittings used by 3, reducing the material and construction volume of the vent pipeline and eliminating one potential leakage point. At the same time, fewer equipment also makes the vent pipeline layout more flexible and the on-site construction and installation more convenient.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A noise reduction blind plate, characterized in that: The noise reduction blind plate is installed on the synthesis gas venting pipeline (8) after the coal gasification scrubber. The venting pipeline (8) is installed with a venting automatic control valve (5) and a manual switch valve (7). The installation position of the noise reduction blind plate is located between the venting automatic control valve (5) and the manual switch valve (7). The noise reduction blind plate (1) includes: A noise reduction orifice plate (11), the noise reduction orifice plate (11) comprising a plurality of noise reduction holes (111) provided at the center of the noise reduction orifice plate (11), the noise reduction holes (111) being used to limit the flow of a medium in a vent line (8) or to reduce a sudden pressure change of the medium in the vent line (8), and a noise reduction orifice plate sealing surface (112) provided at an edge of the noise reduction orifice plate (11); A blind plate (12), the blind plate (12) comprising a blind plate sealing surface (121) provided at an edge of the blind plate (12), the blind plate (12) being used to block the flow of a medium in the vent line (8); The thickness of the blind plate sealing surface (121) is the same as the thickness of the noise reduction orifice sealing surface (112); and the noise reduction orifice (11) and the blind plate (12) are installed at the same location of the vent line (8).

2. The noise reduction blind plate according to claim 1, characterized in that: The noise reduction blind plate (1) further comprises a flange (2), and the noise reduction orifice plate sealing surface (112) of the noise reduction orifice plate (11) and the blind plate sealing surface (121) of the blind plate (12) are sealedly connected to the flange (2).

3. The noise reduction blind plate according to claim 2, characterized in that: The noise reduction blind plate (1) further comprises a fastener (3), wherein the fastener (3) fixes the noise reduction orifice plate (11) and the blind plate (12) on the venting pipeline (8).

4. The noise reduction blind plate according to claim 3, characterized in that: The noise reduction blind plate (1) further comprises a gasket (4), which is arranged at the connection between the flange (2), the noise reduction orifice plate sealing surface (112) of the noise reduction orifice plate (11), and the blind plate sealing surface (121) of the blind plate (12).

5. The noise reduction blind plate according to claim 4, characterized in that: The material of the gasket (4) is a graphite wound gasket.

6. The noise reduction blind plate according to claim 1, characterized in that: A reducing pipe (6) is also installed on the venting pipeline (8). The reducing pipe (6) is installed on a side of the venting automatic control valve (5) close to the noise reduction blind plate (1). One end of the reducing pipe (6) is connected to the venting automatic control valve (5), and the other end of the reducing pipe (6) is in communication with the venting pipeline (8).

7. The noise reduction blind plate according to claim 1, characterized in that: The noise reduction blind plate further comprises: a connecting plate (13), one end of the connecting plate (13) is fixedly connected to the noise reduction orifice plate (11), and the other end of the connecting plate (13) is fixedly connected to the blind plate (12).

8. A vent line for a coal gasification scrubber, characterized in that: The vent pipeline is provided with a noise reduction blind plate as described in any one of claims 1 to 7, and the noise reduction blind plate includes a noise reduction orifice plate (11) and a blind plate (12), and the noise reduction orifice plate (11) and the blind plate (12) are installed at the same position between the vent automatic control valve (5) and the manual switch valve (7).

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