Natural gas filter for gas turbine power plant

Abstract

The utility model discloses a natural gas filter for a gas turbine power plant, which comprises a main pipeline, a sleeve protruding out of the pipe wall is arranged on the pipe wall of the main pipeline, a filter sleeve for primarily filtering natural gas is inserted from an end opening of the sleeve, and a limit seat opposite to the sleeve is fixed inside the main pipeline. The limiting seat is provided with a mounting groove for accommodating the filtering sleeve and limiting the filtering sleeve, the joint between the outer wall of the filtering sleeve and the opening in the end part of the sleeve is sealed, the upper half part of the filtering sleeve is positioned in the sleeve, the lower half part of the filtering sleeve extends into the main pipeline, and a top port of the filtering sleeve is provided with a sleeve cover for sealing the port; and a filtering seat for filtering natural gas again is arranged in the filtering sleeve. The natural gas filter for the gas turbine power plant solves the problems that an existing device is low in filtering efficiency and inconvenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas filters, in particular to a natural gas filter for a gas turbine power plant. Background Art

[0002] In gas turbines, large solid particles in natural gas will directly cause the burner nozzle to be blocked, and in serious cases, the gas turbine blades will be damaged. Small solid particles will also cause wear on the gas turbine system equipment and damage the valve sealing surface on the pipeline, causing leakage. Tiny droplets mixed in natural gas will cause unstable combustion and damage equipment, so natural gas needs to be filtered.

[0003] Chinese patent CN214972639U discloses a natural gas filter for a gas turbine power plant, comprising a pipeline, a valve body and a filter, one side of the pipeline is fixedly connected to the valve body, a filter is installed inside the valve body, one end of the filter is fixedly connected to a first mounting plate, a filter tube is detachably connected inside the filter, a spiral structure is fixedly connected to the periphery of the filter tube, filter holes are provided on the filter tube and the spiral structure, one end of the filter tube is communicated with the pipeline, and by providing a conical filter tube and a spiral structure, the area of ​​natural gas filtration can be increased and the filtering effect can be improved.

[0004] However, the setting of the spiral structure and the filter tube is that the filter tube is directly impacted by the natural gas and is easily damaged by collision with solids in the natural gas. The setting of the spiral structure may cause solids to gather at the outlet of the spiral structure, thereby causing blockage of the outlet and affecting the filtering efficiency. At the same time, due to the setting of the filter, it is inconvenient to remove the filter, making it inconvenient to clean or replace the filter, which is not conducive to the secondary use of the filter and is costly. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a natural gas filter for a gas turbine power plant, which solves the problems of low filtering efficiency and inconvenient installation and disassembly of the prior art devices.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a natural gas filter for a gas turbine power plant, which includes a main pipeline, a sleeve protruding from the pipe wall is provided on the pipe wall of the main pipeline, a filter sleeve for primary filtering of natural gas is inserted from the end opening of the sleeve, a limiting seat relative to the position of the sleeve is fixedly installed inside the main pipeline, a mounting groove for accommodating the filter sleeve and limiting the filter sleeve is provided on the top surface of the limiting seat, the connection between the outer wall of the filter sleeve and the end opening of the sleeve is sealed, the upper half of the filter sleeve is located inside the sleeve, and the lower half extends into the main pipeline, the top port of the filter sleeve is provided with a cylinder cover for closing the port, and the filter seat for secondary filtering of natural gas is provided inside the filter sleeve.

[0007] Preferably, the main pipe axis is perpendicular to the casing axis.

[0008] Preferably, first filter holes are evenly distributed on the wall of the filter sleeve, the pore size of the first filter holes is generally 1±0.2mm, preferably 1±0.1mm, the spacing between adjacent filter holes is 1±0.2mm, preferably 1±0.1mm, the filter seat is provided with second filter holes, the pore size of the second filter holes is 0.5±0.1mm, the hole spacing is 0.5±0.1mm, the first filter holes are distributed in the middle and lower part of the filter sleeve, that is, preferably only the lower half of the filter sleeve extending into the main pipeline is provided with the first filter holes.

[0009] Preferably, the long axis of the filter seat is consistent with the long axis of the filter sleeve, the filter seat comprises two inwardly concave and spaced (preferably symmetrical) arc plates, two side plates respectively connecting the adjacent ends of the two arc plates, and a filter plate arranged between the two arc plates, the two side plates are respectively close to or in contact with the inner walls of both sides of the filter sleeve, the arc plate of the filter seat is provided with a second filter hole, the filter plate is provided with a third filter hole, the aperture of the third filter hole is 0.5±0.1mm, and the hole spacing is 0.5±0.1mm. The two inwardly concave arc plates are arranged to deviate from the longitudinal section of the main pipeline (i.e., at a certain angle with the longitudinal section of the main pipeline, such as 30-90 degrees intersecting), preferably approximately located in the cross-sectional direction of the main pipeline, so that the natural gas from one end of the main pipeline needs to flow through the arc plate and the filter plate.

[0010] Preferably, the bottom surface of the filter plate is flush with the bottom of the filter sleeve, the top surface of the filter plate is flush with the top of the filter sleeve, the two sides of the filter plate are connected to the two side plates respectively, and the filter surface of the filter plate is set to deviate from the longitudinal section of the installation groove (the filter surface and the longitudinal section are at a certain angle), preferably located roughly in the cross-sectional direction of the installation groove, so that the natural gas from one end of the main pipeline needs to flow through the filter surface. The curved plate increases the filter area and prevents solid accumulation and clogging.

[0011] Preferably, the top of the filter sleeve protrudes from the upper opening of the sleeve, so that the filter sleeve can be easily removed from the sleeve, thereby facilitating its cleaning or replacement.

[0012] Preferably, the outer diameter of the filter sleeve is consistent with the inner diameter of the sleeve (for example, equal to or slightly smaller than the inner diameter of the sleeve), the bottom of the filter sleeve is closed and connected with an insertion rod, and the bottom wall of the mounting groove is provided with a hole groove for inserting the insertion rod.

[0013] Preferably, the filter sleeve and the sleeve cover are connected by threads, the top of the filter sleeve extends out from the upper opening of the sleeve, and the bottom surface of the sleeve cover is in contact with the top surface of the sleeve, so that the outer diameter of the sleeve cover is consistent with the outer diameter of the sleeve, and the wall thickness of the sleeve cover is preferably consistent or the same as the wall thickness of the sleeve, so that the filter sleeve and the sleeve can be more conveniently sealed, thereby facilitating the filtering of natural gas.

[0014] Preferably, a sealing ring is installed at the connection between the sleeve and the cylinder cover. The material of the sealing ring may be, for example, rubber material or silicone material, which can improve the sealing performance, prevent air leakage, and improve the safety of the device.

[0015] Preferably, the outer shell of the filter sleeve is made of steel material, which can prevent the filter sleeve from being deformed due to the impact of solids in the natural gas and increase the service life of the device.

[0016] Preferably, the limit seat is a cylindrical block, the axial direction of the limit seat is consistent with the axial direction of the main pipe, the installation groove is a through groove that penetrates the main pipe on both sides of the filter sleeve, the outer diameter of the limit seat is equal to or slightly smaller than the inner diameter of the main pipe, and the outer periphery of the limit seat is close to the inner wall of the main pipe.

[0017] Preferably, the mounting groove is a concave groove opened in the cylindrical block, the top end of the mounting groove is open, the filter sleeve is inserted into the mounting groove through the top end opening, the mounting groove includes two side walls and a bottom wall, the distance between the two side walls is equal to or slightly larger than the outer diameter of the filter sleeve, the bottom wall is provided with a hole groove opposite to the position of the insertion rod, when the filter sleeve is pushed into the mounting groove and abuts against the bottom groove wall, the insertion rod of the filter sleeve is just inserted into the hole groove, so that the filter sleeve can be limited and fixed to prevent it from shaking and affecting the filtering effect of natural gas.

[0018] The utility model provides a natural gas filter for a gas turbine power plant. It has the following beneficial effects:

[0019] 1. The utility model provides a natural gas filter for a gas turbine power plant. Through the arrangement of a limit seat, a mounting groove and a sleeve, the filter sleeve can be placed inside the mounting groove and the sleeve through the sleeve, so as to facilitate filtering of natural gas. The top of the filter sleeve protrudes from the sleeve, which is convenient for installation and disassembly, thereby facilitating cleaning or replacement of the filter device and reducing the cost of use; the filter sleeve and the sleeve cover are connected by threads, and the filter sleeve and the sleeve are sealed, so as to facilitate filtering of natural gas; the gap between the sleeve and the sleeve cover is equipped with a sealing ring to improve the sealing performance, prevent gas leakage, and improve the safety of the device;

[0020] 2. At the same time, through the setting of the filter sleeve, filter seat and filter plate, the solids in the natural gas first collide with the filter sleeve, forming a protective barrier relative to the filter seat to prevent the filter seat from being damaged and extend the service life of the device. The arc plate not only increases the filtering area, but also prevents solids from gathering and clogging, thereby improving the filtering efficiency and enhancing the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the natural gas filter for a gas turbine power plant of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure inside the main pipeline of the natural gas filter for a gas turbine power plant of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the casing of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the limit seat of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the filter seat of the utility model.

[0026] Reference numerals:

[0027] 1. Main pipeline; 2. Casing; 3. Limit seat, 31. Outer periphery of limit seat; 4. Mounting groove, 41. Side wall, 42. Bottom wall; 5. Filter sleeve; 6. Hole groove; 7. Insert rod; 8. First filter hole; 9. Filter seat, 91. Arc plate, 92. Side plate; 10. Second filter hole; 11. Filter plate; 12. Third filter hole; 13. Cylinder cover; 14. Sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the implementation scheme of the utility model to clearly and completely describe the technical solutions in the implementation scheme of the utility model. Obviously, the described implementation scheme is only a part of the implementation scheme of the utility model, not all of the implementation schemes, and the various features in the various implementation schemes can be combined arbitrarily. Based on the implementation scheme in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] like Figure 1-5 As shown: a natural gas filter for a gas turbine power plant, which includes a main pipeline 1, a sleeve 2 protruding from the pipe wall is provided on the pipe wall of the main pipeline 1, a filter sleeve 5 for primary filtering of natural gas is inserted from the end opening of the sleeve 2, a stopper 3 opposite to the position of the sleeve 2 is fixedly installed (for example, fixed by bonding) inside the main pipeline 1, and the stopper 3 is provided with a mounting groove 4 for accommodating the filter sleeve 5 and limiting the filter sleeve 5, the connection between the outer wall of the filter sleeve 5 and the end opening of the sleeve 2 is sealed, the upper half of the filter sleeve 5 is located inside the sleeve 2, and the lower half extends into the main pipeline 1, the top port of the filter sleeve 5 is provided with a barrel cover 13 for closing the port, and the filter sleeve 5 is provided with a filter seat 9 for re-filtering natural gas. Through the arrangement of the stopper 3, the mounting groove 4, and the sleeve 2, the filter sleeve 5 with adapted specifications can be placed inside the mounting groove 4 and the sleeve 2 through the sleeve 2, and then the natural gas can be filtered, and the installation and disassembly are convenient, so that the filter device can be cleaned or replaced to reduce the cost of use.

[0030] In a further embodiment, a plurality of first filter holes 8 are evenly distributed on the wall of the filter sleeve, and a plurality of second filter holes 10 are provided on the filter seat 9, preferably evenly distributed. The first filter holes have a pore size of 1 mm and a pore spacing of 1 mm, and the second filter holes have a pore size of 0.5 mm and a pore spacing of 0.5 mm.

[0031] In a further embodiment, the long axis of the filter seat 9 is consistent with the long axis of the filter sleeve 5, and the filter seat 9 includes two arc plates 91 that are recessed inward and arranged at intervals, two side plates 92 that connect the adjacent ends of the two arc plates 91, and a filter plate 11 disposed between the two arc plates 91, and the two side plates 92 are respectively close to or in contact with the inner walls of both sides of the filter sleeve 5, and the arc plate 91 of the filter seat is provided with a second filter hole 10, preferably a plurality of second filter holes 10 are uniformly provided on the entire arc plate 91 of the filter seat, and the filter plate 11 is provided with a plurality of third filter holes 12, preferably a plurality of third filter holes 12 are uniformly provided, and the aperture of the third filter hole is 0.5 mm, and the hole spacing is 0.5 mm. The arc plate 91 is arranged to deviate from the longitudinal section of the main pipeline (i.e., it is at a certain angle with the longitudinal section of the main pipeline, such as 30-90 degrees intersecting), and is preferably located approximately in the cross-sectional direction of the main pipeline, so that the natural gas from one end of the main pipeline needs to flow through the arc plate 91 and the filter plate 11. By setting the filter sleeve 5, the filter seat 9 and the filter plate 11, the solids in the natural gas will not collide with the filter seat 9 before, thus preventing the filter seat 9 from being damaged and increasing the service life of the device. The arc plate 91 not only increases the filtering area, but also prevents solids from gathering and clogging, thereby improving the filtering efficiency and filtering effect.

[0032] In another embodiment, the bottom of the filter plate 11 is flush with the bottom of the filter sleeve 5 , the top surface of the filter plate 11 is flush with the top of the filter sleeve 5 , and both sides of the filter plate 11 are connected to the two side plates 92 respectively.

[0033] In another embodiment, the outer diameter of the filter sleeve 5 is consistent with the inner diameter of the sleeve 2, the bottom of the filter sleeve 5 is closed and connected with the insertion rod 7, and the bottom wall 42 of the installation groove 4 is provided with a hole groove 6 for inserting the insertion rod 7. When the filter sleeve 5 is pushed into the installation groove 4 and abuts against the bottom wall 42, the insertion rod 7 of the filter sleeve 5 is just inserted into the hole groove 6, so that the filter sleeve 5 can be limited and fixed to prevent it from shaking and affecting the filtering effect of natural gas.

[0034] In another embodiment, the filter sleeve 5 and the cartridge cover 13 are connected by threads, and the top of the filter sleeve 5 extends out from the upper opening of the casing 2, so that when the cartridge cover 13 seals the filter sleeve 5, the bottom surface of the cartridge cover is in contact with the top surface of the casing 2. Preferably, the outer diameter of the cartridge cover 13 is consistent with or the same as the outer diameter of the casing 2, and the wall thickness of the cartridge cover is also preferably consistent with or the same as the wall thickness of the casing.

[0035] In a further embodiment, a sealing ring 14 is installed at the connection between the sleeve 2 and the cylinder cover 13. The material of the sealing ring 14 can be, for example, a rubber material or a silicone material, which can improve the sealing performance, prevent air leakage, and improve the safety of the device.

[0036] In another embodiment, the limit seat 3 is a cylindrical block, the axial direction of the limit seat 3 is consistent with the axial direction of the main pipe 1, the mounting groove 4 is a notch on the cylindrical block, the mounting groove 4 is a through groove that penetrates the main pipe 1 on both sides of the filter sleeve 5, the outer diameter of the limit seat 3 is equal to or slightly smaller than the inner diameter of the main pipe 1, and the outer periphery 31 of the limit seat is close to the inner wall of the main pipe 1.

[0037] In another embodiment, the mounting groove 4 is a U-shaped groove opened in the cylindrical block, the top end of the mounting groove 4 is open, and the filter sleeve 5 is inserted into the mounting groove 4 through the top end opening. The mounting groove 4 includes two side walls 41 and a bottom wall 42, and the distance between the two side walls 41 is equal to or slightly larger than the outer diameter of the filter sleeve 5.

[0038] The working principle and use process of the utility model are as follows: when the device is required to work, the filter sleeve 5 is first pushed into the installation groove 4 and the inside of the sleeve 2 through the sleeve 2, and the hole groove 6 on the limit seat 3 fixes and limits the filter sleeve 5, and then the filter sleeve 5 and the sleeve 2 are sealed by the sleeve cover 13 and the sealing ring 14. When the natural gas is transported, the natural gas first collides with the filter sleeve 5 for filtering, reducing the impact force of the solid in the natural gas, and then the natural gas contacts the arc-shaped filter seat 9 to prevent the filter seat 9 from being damaged. A part of the solid is filtered by the second filter hole 10, and then filtered by the third filter hole 12. Finally, the natural gas filtration is completed, and the solid remains in the interior of the filter sleeve 5, and no clogging occurs.

[0039] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A natural gas filter for a gas turbine power plant, characterized in that: The invention comprises a main pipeline (1), a sleeve (2) protruding from the pipe wall of the main pipeline (1) is provided, a filter sleeve (5) for primary filtering of natural gas is inserted from the end opening of the sleeve (2), a limiting seat (3) is fixedly installed inside the main pipeline (1) and is opposite to the sleeve (2), a mounting groove (4) for accommodating the filter sleeve (5) and limiting the position of the filter sleeve (5) is provided on the top surface of the limiting seat (3), the connection between the outer wall of the filter sleeve (5) and the end opening of the sleeve (2) is sealed, the upper half of the filter sleeve (5) is located inside the sleeve (2), and the lower half extends into the main pipeline (1), the top port of the filter sleeve (5) is provided with a sleeve cover (13) for closing the port, and the filter sleeve (5) is provided with a filter seat (9) for secondary filtering of natural gas inside.

2. The natural gas filter for a gas turbine power plant according to claim 1, characterized in that: The filter sleeve (5) has first filter holes (8) evenly distributed on its wall, and the filter seat (9) is provided with second filter holes (10).

3. The natural gas filter for a gas turbine power plant according to claim 1 or 2, characterized in that: The long axis of the filter seat (9) is consistent with the long axis of the filter sleeve (5). The filter seat (9) comprises two arc-shaped plates (91) which are recessed inwards and arranged at intervals, two side plates (92) respectively connecting the adjacent ends of the two arc-shaped plates (91), and a filter plate (11) arranged between the two arc-shaped plates (91). The two side plates (92) are respectively close to or in contact with the inner walls of the filter sleeve (5) on both sides. The arc-shaped plate (91) of the filter seat (9) is provided with a second filter hole (10), and the filter plate (11) is provided with a third filter hole (12).

4. The natural gas filter for a gas turbine power plant according to claim 3, characterized in that: The bottom of the filter plate (11) is flush with the bottom of the filter sleeve (5), the top surface of the filter plate (11) is flush with the top of the filter sleeve (5), and the two sides of the filter plate (11) are respectively connected to two side plates (92).

5. The natural gas filter for a gas turbine power plant according to claim 1, characterized in that: The outer diameter of the filter sleeve (5) is consistent with the inner diameter of the sleeve (2); the bottom of the filter sleeve (5) is closed and connected to an insertion rod (7); and the bottom wall (42) of the mounting groove (4) is provided with a hole groove (6) for inserting the insertion rod (7).

6. The natural gas filter for a gas turbine power plant according to claim 1, characterized in that: The filter sleeve (5) and the sleeve cover (13) are connected by threads, the top of the filter sleeve (5) protrudes from the upper opening of the sleeve (2), and the bottom surface of the sleeve cover is in matching contact with the top surface of the sleeve (2).

7. The natural gas filter for a gas turbine power plant according to claim 1 or 6, characterized in that: A sealing ring (14) is installed at the connection between the sleeve (2) and the cylinder cover (13).

8. The natural gas filter for a gas turbine power plant according to claim 1, characterized in that: The limit seat (3) is a cylindrical block, the axial direction of the limit seat (3) is consistent with the axial direction of the main pipeline (1), the installation groove (4) is a through groove that penetrates the main pipeline (1) on both sides of the filter sleeve (5), the outer diameter of the limit seat (3) is equal to or slightly smaller than the inner diameter of the main pipeline (1), and the outer peripheral edge (31) of the limit seat is in close contact with the inner wall of the main pipeline (1).

9. The natural gas filter for a gas turbine power plant according to claim 7, characterized in that: The mounting groove (4) is a concave groove opened in the cylindrical block, the top end of the mounting groove (4) is open, and the filter sleeve (5) is inserted into the mounting groove (4) through the top end opening. The mounting groove (4) comprises two side walls (41) and a bottom wall (42), and the distance between the two side walls (41) is equal to or slightly larger than the outer diameter of the filter sleeve (5).

10. The natural gas filter for a gas turbine power plant according to claim 3, characterized in that: The outer shell of the filter sleeve (5) is made of steel; and / or The aperture of the first filter hole is 1±0.2 mm, the aperture of the second filter hole is 0.5±0.1 mm, and the aperture of the third filter hole is 0.5±0.1 mm.

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