CN113775775B

CN113775775B - Gas-solid two-phase flow valve

Info

Publication number: CN113775775B
Application number: CN202111056198.1A
Authority: CN
Inventors: 张寿根; 肖翰; 叶一舟; 萧亚兵
Original assignee: Zhejiang Gute Pneumatic Machinery Co ltd
Current assignee: Zhejiang Gute Pneumatic Machinery Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2023-07-14
Anticipated expiration: 2041-09-09
Also published as: CN113775775A

Abstract

The invention discloses a gas-solid two-phase flow valve, which comprises an upper valve body, a lower valve body, a wear-resistant component and an ash removal device, wherein a valve cavity shell is fixed between the upper valve body and the lower valve body, a valve rod penetrates through the valve cavity shell in a sliding manner, the wear-resistant component is arranged on the upper valve body, and the ash removal device is arranged on a mounting plate.

Description

Gas-solid two-phase flow valve

Technical Field

The invention relates to the technical field of gate valves, in particular to a gas-solid two-phase flow valve.

Background

The pneumatic conveying system for the fly ash is widely applied to the modern coal-fired thermal power generation industry, plays a key role in a thermal power generation unit, mainly conveys a large amount of residual fly ash generated by burning coal materials in time and safely, and ensures the effective work of the whole power generation unit. The pneumatic conveying of the fly ash in the thermal power generating set belongs to the gas-solid two-phase conveying category, and in the gas-solid two-phase conveying process, the key relates to the movement of the fly ash, the collision and the scouring of solid walls and other complex flowing abrasion, and the requirement on the wear resistance of components in a conveying system is extremely high. In addition, in the fly ash pneumatic conveying system, the gas-solid two-phase conveying valve is a key component for controlling the flow direction and the flow rate of a gas-solid two-phase fluid medium, and plays a very important role in the stability and the reliability of the system operation.

At present, in the existing fly ash pneumatic transmission process, solid particles are seriously worn on a runner, regular integral replacement is needed, the replacement cost is high, the operation is complex, the power generation progress is influenced, a large amount of manpower and material resources are wasted, meanwhile, due to the limitation of some installation positions, sometimes a double-flashboard gate valve is required to be vertically installed, in the vertical installation process, the fly ash is often accumulated in a valve cavity, so that the valve is blocked, the valve cannot normally work, the cleaning and maintenance are carried out, a large amount of manpower resources are wasted, and the power generation progress is influenced. For this purpose, we propose a gas-solid two-phase flow valve.

Disclosure of Invention

The invention aims to provide a gas-solid two-phase flow valve so as to solve the problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a gas-solid two-phase flow valve, includes valve body, lower valve body, wear-resisting subassembly and ash removal device, be fixed with the valve pocket shell between upper valve body and the lower valve body, the valve pocket shell slides and runs through there is the valve rod, valve rod one end is connected with drive actuating device, and the other end is fixed with the installation piece, be fixed with the connecting block on the installation piece, the both sides of connecting block are fixed with respectively with upper valve plate and the lower valve plate that corresponds upper valve body and lower valve body laminating, wear-resisting subassembly mainly used strengthens the wear resistance of two-phase flow valve, improves the performance of two-phase flow valve to be convenient for change after wearing and tearing, wear-resisting subassembly installs on the upper valve body, ash removal device mainly used clearance two-phase flow gate valve intracavity accumulational solid particle prevents that the gate valve can't open, ash removal device sets up on the mounting panel.

Preferably, the wear-resisting component comprises a sleeve sleeved with the upper valve body, the sleeve is fixed on the upper valve body through a screw, a sealing ring is fixed at one end of the sleeve, which is close to the valve cavity shell, one side of the sealing ring, which is close to the upper valve plate, is coplanar with one side of the upper valve body, the inner diameters of the sealing ring and the sleeve are smaller than the inner diameter of the lower valve body, so that abrasion of the sealing ring and the sleeve is reduced, the overall service life of the valve is prolonged, meanwhile, the whole valve is not required to be replaced through the split design of the corresponding sleeve and the upper valve body, only the corresponding sleeve and the corresponding sealing ring are required to be replaced, the cost is saved, and the valve is convenient to disassemble.

Preferably, the ash removal device comprises a chute arranged on the lower valve body and two guide rods which are in sliding penetration with the mounting plate, the two guide rods are symmetrically arranged on two sides of the valve rod, one end of each guide rod, which is far away from the mounting plate, is fixedly connected with the inner wall of the valve cavity shell, the two sides of the lower valve body, which are positioned on the chute, are symmetrically provided with cleaning components for cleaning and accumulating solid particles, the mounting plate is fixedly provided with a transition plate, a driving device for driving the cleaning components is arranged on the transition plate, and the crushing and cleaning of the adhesion particles accumulated by the corresponding fly ash are realized through the action of the ash removal device, so that the opening of the corresponding valve is facilitated, the structure is simple, the realization is convenient, and the problem that the valve can not be opened due to the blockage of the traditional gate valve is solved.

Preferably, the cleaning assembly comprises a sliding plate, the sliding plate is attached to the lower valve body, a first sliding groove is formed in the sliding plate, a sliding seat is connected in the first sliding groove in a sliding mode, the sliding seat is connected with a guide rod in a sliding mode, a first waveform block is fixed on one side of the sliding plate, a second waveform block matched with the first waveform block is fixed on the inner wall of the valve cavity shell, a cleaning scraper attached to the lower valve body is fixed on one side of the sliding plate, and a crushing assembly used for crushing stacked and adhered particles is mounted on one side of the sliding plate, so that crushing and cleaning of the adhered particles are achieved through the cleaning assembly.

Preferably, the crushing assembly comprises two supporting plates fixedly connected with the sliding plate, the two supporting plates are rotationally connected with a first rotating rod, a plurality of crushing cutters are fixed on the first rotating rod, a first gear is fixed at one end, close to the valve rod, of the first rotating rod, and the fly ash on the path can be effectively accumulated and adhered to particles to be crushed through rotation of the crushing cutters, so that subsequent cleaning is facilitated, and the crushing assembly is simple in structure.

Preferably, the driving device comprises a driving motor fixedly connected with a supporting plate, the output end of the driving motor is fixedly connected with a second gear, the second gear is meshed with a third gear, a second rotating shaft is fixed on the third gear, a second sliding groove is formed in the sliding plate, two ends of the second rotating shaft are in sliding connection with the corresponding sliding plate through the second sliding groove, fourth gears meshed with the corresponding first gear are symmetrically fixed on the second rotating shaft, two ends of a second transmission shaft are sleeved with first springs, two ends of the first springs are respectively contacted with the corresponding fourth gears and the sliding plate, the tooth width of the fourth gears is larger than that of the first gears, an auxiliary assembly for assisting the sliding plate to move is mounted on the supporting plate, the second gear is driven by the driving motor to rotate through the third gear, the second rotating shaft is further driven to rotate corresponding fourth gears, the first gears are driven to rotate through the corresponding first rotating shafts, the crushing blades are driven to rotate, the solid adhered to be crushed, and the solid can be in a certain crushing process, the fly ash can be well cleaned by the first vibrating plate and the second vibrating plate, and the fly ash particles can be simultaneously cleaned by the aid of the first vibrating plate and the second vibrating plate.

Preferably, the auxiliary assembly comprises sliding holes symmetrically formed in the transition plate, sliding rods fixedly connected with the corresponding sliding plates are slidably connected in the sliding holes, second springs are sleeved on the sliding rods, two ends of each second spring are respectively contacted with the transition plate and the corresponding sliding plate, and the second springs are beneficial to providing continuous pressure towards the side wall of the valve cavity shell for the sliding plates and facilitating long-term effective contact of the first corrugated plate and the second corrugated plate.

Preferably, the cleaning scraper is inclined, so that the broken and cleaned accumulated solid particles can be guided into the chute on the lower valve body, and then the accumulated particles can flow into the lower valve body and then flow into the combustion area of the subsequent thermal power generation.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the inner diameters of the sealing ring and the sleeve are designed to be smaller than the inner diameter of the lower valve body, so that the abrasion of the sealing ring and the sleeve is reduced, the overall service life of the valve is prolonged, meanwhile, through the split type design of the corresponding sleeve and the upper valve body, the whole valve is not required to be replaced during replacement, the cost is saved, the disassembly is convenient, the crushing and cleaning of corresponding fly ash accumulation adhesion particles are realized through the action of the ash removing device, the opening of the corresponding valve is facilitated, and the problem that the valve cannot be opened due to the blockage of the traditional gate valve is solved.

2. The sealing surface is perpendicular to the streamline direction, so that flow scouring is reduced, and a good sealing effect is achieved; the sealing surface compensation spring adopts a disc spring, so that the torque stability in the opening and closing process is ensured, and the service life is prolonged; the packing is overlapped and matched with the filler, and the spring bears the filler structure, so that leakage is effectively eliminated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the ash removal device of the present invention;

FIG. 3 is a schematic view of the wear assembly of the present invention;

FIG. 4 is a schematic view of a cleaning assembly according to the present invention;

FIG. 5 is an enlarged view of area A of FIG. 3;

FIG. 6 is an enlarged view of area B of FIG. 4;

FIG. 7 is an enlarged view of region C of FIG. 4;

fig. 8 is an enlarged view of region D in fig. 6.

In the figure: 1-an upper valve body; 2-a lower valve body; 3-a valve cavity shell; 4-a valve rod; 5-mounting blocks; 6-connecting blocks; 7-upper valve plate; 8-a lower valve plate; 9-a wear assembly; 10-ash removal device; 11-a sleeve; 12-a sealing ring; 13-chute; 14-a guide rod; 15-a cleaning assembly; 16-a transition plate; 17-a driving device; 18-a skateboard; 19-a first chute; 20-a slide; 21-a first waveform block; 22-a second waveform block; 23-cleaning scraper; 24-a crushing assembly; 25-supporting plates; 26-a first rotating lever; 27-a crushing knife; 28-a first gear; 29-a drive motor; 30-a second gear; 31-a third gear; 32-a second rotation axis; 33-a second chute; 34-fourth gear; 35-a first spring; 36-an auxiliary assembly; 37-slide hole; 38-a slide bar; 39-a second spring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a gas-solid two-phase flow valve, includes valve body 1, lower valve body 2, wear-resisting subassembly 9 and ash removal device 10, be fixed with valve pocket shell 3 between upper valve body 1 and the lower valve body 2, valve pocket shell 3 slip runs through has valve rod 4, valve rod 4 one end is connected with the drive execution device, and the other end is fixed with installation piece 5, be fixed with connecting block 6 on the installation piece 5, the both sides of connecting block 6 are fixed with respectively with upper valve plate 7 and lower valve plate 8 that correspond upper valve body 1 and lower valve body 2 laminating, wear-resisting subassembly 9 mainly used reinforcing two-phase flow valve's wear resistance improves two-phase flow valve's performance to be convenient for change after wearing and tearing, wear-resisting subassembly 9 is installed on upper valve body 1, ash removal device 10 mainly used clearance two-phase flow gate valve intracavity piled up solid particle prevents that the gate valve can't open, ash removal device 10 sets up on the mounting panel.

The wear-resisting subassembly 9 includes the sleeve 11 that cup joints with last valve body 1, sleeve 11 passes through the screw fixation on last valve body 1, sleeve 11 is close to the one end of valve pocket shell 3 and is fixed with sealing ring 12, one side that sealing ring 12 is close to upper valve plate 7 and upper valve body 1 one side coplane, sealing ring 12 and sleeve 11's internal diameter all are less than lower valve body 2 internal diameter, help reducing sealing ring 12 and sleeve 11's wearing and tearing, improve the whole life of valve, simultaneously through corresponding sleeve 11 and upper valve body 1 split type design, need not to change whole valve when changing, only need to change corresponding sleeve 11 and corresponding sealing ring 12 can, practice thrift the cost, convenient dismantlement.

The ash removal device 10 comprises a chute 13 arranged on the lower valve body 2 and two guide rods 14 penetrating through the installation plate in a sliding mode, the two guide rods 14 are symmetrically arranged on two sides of the valve rod 4, one end, away from the installation plate, of each guide rod 14 is fixedly connected with the inner wall of the valve cavity shell 3, cleaning components 15 for cleaning accumulated solid particles are symmetrically arranged on two sides of the chute 13 of the lower valve body 2, a transition plate 16 is fixed on the installation plate, a driving device 17 for driving the cleaning components 15 is arranged on the transition plate 16, crushing and cleaning of adhered particles accumulated by corresponding fly ash are achieved through the action of the ash removal device 10, opening of a corresponding valve is facilitated, the structure is simple, implementation is convenient, and the problem that a traditional gate valve blocking valve cannot be opened is solved.

The cleaning assembly 15 comprises a sliding plate 18, the sliding plate 18 is attached to the lower valve body 2, a first sliding groove 19 is formed in the sliding plate 18, a sliding seat 20 is connected in the sliding way in the first sliding groove 19, the sliding seat 20 is connected with the guide rod 14 in a sliding way, a first waveform block 21 is fixed on one side of the sliding plate 18, a second waveform block 22 matched with the first waveform block 21 is fixed on the inner wall of the valve cavity shell 3, a cleaning scraper 23 attached to the lower valve body 2 is fixed on one side of the sliding plate 18, a crushing assembly 24 for crushing accumulated and adhered particles is mounted on one side of the sliding plate 18, and the crushing and cleaning of the adhered particles are realized through the cleaning assembly 15.

The crushing assembly 24 comprises two supporting plates 25 fixedly connected with the sliding plate 18, the two supporting plates 25 are rotationally connected with a first rotating rod 26, a plurality of crushing cutters 27 are fixed on the first rotating rod 26, a first gear 28 is fixed at one end, close to the valve rod 4, of the first rotating rod 26, and the fly ash on the path can be effectively crushed through rotation of the crushing cutters 27, so that subsequent cleaning is facilitated, and the crushing assembly is simple in structure.

The driving device 17 comprises a driving motor 29 fixedly connected with the supporting plate 25, the output end of the driving motor 29 is fixedly connected with a second gear 30, the second gear 30 is meshed with a third gear 31, a second rotating shaft 32 is fixed on the third gear 31, a second sliding groove 33 is formed in the sliding plate 18, two ends of the second rotating shaft 32 are in sliding connection with the corresponding sliding plate 18 through the second sliding groove 33, fourth gears 34 meshed with the corresponding first gears 28 are symmetrically fixed on the second rotating shaft 32, two ends of the second transmission shaft are sleeved with first springs 35, two ends of the first springs 35 are respectively contacted with the corresponding fourth gears 34 and the sliding plate 18, the tooth width of the fourth gears 34 is larger than that of the first gears 28, an auxiliary assembly 36 for assisting the movement of the sliding plate 18 is arranged on the supporting plate 25, the second gears 30 are driven by the driving motor 29, the third gears 31 are further driven to rotate, the second rotating shaft 32 is further driven to rotate corresponding fourth gears 34, the first gears 28 are driven to rotate through the fourth gears 34, and the first gears 28 are further driven to rotate, the corresponding fourth gears 28 are further driven to rotate, the first rotating shafts and the corresponding second rotating shafts are further driven to rotate, the first rotating shafts are further driven to rotate, the second rotating shafts are further, the first rotating shafts are driven to rotate, the corresponding second rotating shafts are further, the second rotating shafts are driven to rotate the corresponding shafts, and rotate the solid crushing shafts, and are further clean and move the solid particles, and are stacked and are in a certain crushing shafts, and are in a certain crushing process, and are simultaneously, and can move, and are used for the crushing and are in the crushing and are move, and are in a certain, and are roll, and are a solid crushing carrier, and are simultaneously, and are move.

The auxiliary assembly 36 comprises slide holes 37 symmetrically formed in the transition plate 16, slide rods 38 fixedly connected with the corresponding slide plates 18 are slidably connected in the slide holes 37, second springs 39 are sleeved on the slide rods 38, two ends of each second spring 39 are respectively contacted with the transition plate 16 and the corresponding slide plate 18, and the second springs 39 are beneficial to providing continuous pressure towards the side wall of the valve cavity shell 3 for the slide plate 18 and facilitating long-term effective contact of the first corrugated plate and the second corrugated plate.

The cleaning scraper 23 is inclined, so that the broken and cleaned accumulated solid particles are guided into the chute 13 on the lower valve body 2, and then the accumulated particles flow into the lower valve body 2 and then the subsequent gas-solid two-phase flow flows to the combustion area of the subsequent thermal power generation.

In this scheme, cleaning device's theory of operation, when needs open the gate valve, drive actuating device drives valve rod 4 and remove, and drive the mounting panel and remove, transition board 16 removes simultaneously, start corresponding driving motor 29 this moment, drive second gear 30 in proper order through driving motor 29, third gear 31 and fourth gear 34 rotate, and drive first gear 28 rotation, drive first axis of rotation and drive corresponding crushing sword 27 rotation, carry out the breakage to piling up the fly ash granule of gluing, simultaneously the removal of valve rod 4 drives the removal of transition board 16, drive slide 18 through slide bar 38 and remove, and under the effect of first wave plate and second wave plate, slide 18 removes the in-process and present the swing of certain range, keep the continuous pressure towards valve pocket shell 3 of slide 18 under the effect of first spring 35 and second spring 39 in the swing in-process, make first wave plate and second wave plate continuous contact, in the swing in-process, first gear 28 can slide relatively on fourth gear 34 this moment, and guarantee corresponding meshing transmission, the broken region of piling up gluing the fly ash granule is along with 18 swing, can more comprehensive and the continuous solid of the scraping blade that the smooth flow of the follow-up particle is realized, and the following thermal power generation is carried out to the smooth flow of the following flow of the smooth flow of particles 23 through the smooth flow of the design to the following to the valve body of the vibration 23.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The gas-solid two-phase flow valve comprises an upper valve body (1) and a lower valve body (2), wherein a valve cavity shell (3) is fixed between the upper valve body (1) and the lower valve body (2), the valve cavity shell (3) is penetrated by a valve rod (4) in a sliding manner, one end of the valve rod (4) is connected with a driving executing device, the other end of the valve rod is fixedly provided with a mounting block (5), a connecting block (6) is fixedly arranged on the mounting block (5), and two sides of the connecting block (6) are respectively fixedly provided with an upper valve plate (7) and a lower valve plate (8) which are attached to the corresponding upper valve body (1) and the lower valve body (2), and the gas-solid two-phase flow valve is characterized by further comprising a wear-resistant component (9), wherein the wear-resistant component (9) is mainly used for enhancing the wear resistance of the two-phase flow valve, improving the service performance of the two-phase flow valve and facilitating replacement after wear; the ash removal device (10), ash removal device (10) mainly used clearance two-phase flow gate valve intracavity piled up solid particle prevents that the gate valve can't open, ash removal device (10) set up on the installation piece, wear-resisting subassembly (9) including sleeve (11) with last valve body (1) cup joint, sleeve (11) pass through the fix with screw on last valve body (1), sleeve (11) are close to valve pocket shell (3) one end fixed with sealing ring (12), one side that sealing ring (12) are close to upper valve plate (7) and last valve body (1) one side coplane, sealing ring (12) and sleeve (11) internal diameter all are less than lower valve body (2) internal diameter, ash removal device (10) are including opening chute (13) and two guide bars (14) that run through with the installation piece slip on lower valve body (2), two guide bars (14) both sides are set up in valve rod (4) symmetry, one end that guide bar (14) kept away from the installation piece all is connected with valve pocket shell (3) inner wall fixed, lower valve body (2) are located chute (13) are provided with on the installation piece (16) and are used for installing solid particle cleaning device (16) on the fixed subassembly (16), cleaning assembly (15) are including slide (18), slide (18) and laminating of lower valve body (2), first spout (19) have been seted up on slide (18), sliding connection has slide (20) in first spout (19), slide (20) and guide bar (14) sliding connection, slide (18) one side is fixed with first waveform piece (21), valve pocket shell (3) inner wall is fixed with and first waveform piece (21) looks adaptation second waveform piece (22), slide (18) one side is fixed with and cleans scraper (23) of laminating of lower valve body (2), slide (18) one side is installed and is used for piling up broken subassembly (24) of gluing granule.

2. A gas-solid two-phase flow valve according to claim 1, wherein: the crushing assembly (24) comprises two supporting plates (25) fixedly connected with the sliding plate (18), the two supporting plates (25) are rotatably connected with a first rotating rod (26), a plurality of crushing cutters (27) are fixed on the first rotating rod (26), and a first gear (28) is fixed at one end, close to the valve rod (4), of the first rotating rod (26).

3. A gas-solid two-phase flow valve according to claim 2, wherein: the driving device (17) comprises a driving motor (29) fixedly connected with the supporting plate (25), a second gear (30) is fixedly connected with the output end of the driving motor (29), a third gear (31) is meshed with the second gear (30), a second rotating shaft (32) is fixed on the third gear (31), a second sliding groove (33) is formed in the sliding plate (18), two ends of the second rotating shaft (32) are in sliding connection with the corresponding sliding plate (18) through the second sliding groove (33), a fourth gear (34) meshed with the corresponding first gear (28) is symmetrically fixed on the second rotating shaft (32), first springs (35) are sleeved at two ends of the second rotating shaft (32), two ends of the first springs (35) are respectively contacted with the corresponding fourth gear (34) and the corresponding sliding plate (18), and the tooth width of the fourth gear (34) is larger than that of the first gear (28), and an auxiliary assembly (36) for assisting the movement of the sliding plate (18) is mounted on the supporting plate (25).

4. A gas-solid two-phase flow valve according to claim 3, wherein: the auxiliary assembly (36) comprises sliding holes (37) symmetrically formed in the transition plate (16), sliding rods (38) fixedly connected with the corresponding sliding plates (18) are slidably connected in the sliding holes (37), second springs (39) are sleeved on the sliding rods (38), and two ends of each second spring (39) are respectively contacted with the transition plate (16) and the corresponding sliding plate (18).

5. The gas-solid two-phase flow valve according to claim 4, wherein: the cleaning scraper (23) is inclined.