CN113775775A

CN113775775A - Gas-solid two-phase flow valve

Info

Publication number: CN113775775A
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: 2021-12-10
Anticipated expiration: 2041-09-09
Also published as: CN113775775B

Abstract

The invention discloses a gas-solid two-phase flow valve, which comprises an upper valve body, a lower valve body, a wear-resistant assembly and a dust 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 assembly is installed on the upper valve body, and the dust removal device is arranged on an installation 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 coal ash pneumatic conveying system is widely applied to the modern coal-fired thermal power generation industry for a long time, plays a key role in a thermal power generating set, and mainly conveys a large amount of coal ash left by coal material combustion in time and safely so as to guarantee the effective work of the whole generating set. The pneumatic conveying of the fly ash in the thermal power generating set belongs to the field of gas-solid two-phase conveying, and in the process of the gas-solid two-phase conveying, the key points relate to various complex flowing abrasion such as fly ash movement, collision and scouring on a solid wall surface and the like, and the requirement on the abrasion resistance of parts in a conveying system is extremely high. In addition, in the pneumatic conveying system for fly ash, the gas-solid two-phase conveying valve is a key component for controlling the flow direction and flow rate of a gas-solid two-phase fluid medium, and plays an important role in the stability and reliability of the system operation.

At present, among the present fly ash pneumatic transmission process, it is serious to have solid particle convection current channel wearing and tearing mainly, need regular overall replacement, the replacement cost is high, and complex operation influences the progress of electricity generation and wastes a large amount of manpower and materials, simultaneously because some mounted position's restriction, double gate board gate valve has sometimes to vertical installation, at the in-process of vertical installation, fly ash piles up often appears in the valve pocket inside, thereby block up the valve, lead to the unable normal work of valve, the cleaning and maintenance, waste a large amount of manpower and resources, influence the electricity generation progress. Therefore, a gas-solid two-phase flow valve is provided.

Disclosure of Invention

The invention aims to provide a gas-solid two-phase flow valve to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a gas-solid two-phase flow valve, includes valve body, lower valve body, wear-resisting subassembly and ash removal device, it is fixed with the valve cavity shell to go up between valve body and the lower valve body, the valve cavity 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 last valve plate and the lower valve plate that corresponds last valve body and lower valve body laminating, wear-resisting subassembly mainly is used for strengthening 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 is installed on last valve body, ash removal device mainly is used for clearing up the solid particle of piling up in the two-phase flow gate valve cavity, prevents that the gate valve can't open, ash removal device sets up on the mounting panel.

Preferably, wear-resisting subassembly includes the sleeve that cup joints with last valve body, the sleeve passes through the screw fixation on last valve body, the sleeve is close to the one end of valve chamber shell and is fixed with the sealing ring, the sealing ring is close to one side and last valve body one side coplane of last valve plate, sealing ring and telescopic internal diameter all are less than down the valve body internal diameter, help reducing sealing ring and telescopic wearing and tearing, improve the whole life of valve, simultaneously through corresponding sleeve and the split type design of last valve body, need not to change whole valve during the change, only need to change corresponding sleeve and corresponding sealing ring can, practice thrift the cost, convenient the dismantlement.

Preferably, ash removal device slides the guide bar that runs through, two including seting up chute and two and mounting panel on the valve body down the guide bar symmetry sets up in the valve rod both sides, the one end that the mounting panel was kept away from to the guide bar all with valve pocket shell inner wall fixed connection, the bilateral symmetry that the valve body is located the chute down is provided with the subassembly that cleans that is used for clearing up and piles up solid particle, be fixed with the cab apron on the mounting panel, cross and install the drive arrangement who is used for the drive to clean the subassembly on the cab apron, through ash removal device's effect, realize that corresponding fly ash piles up the breakage of gluing even granule and clean, help opening of corresponding valve, simple structure realizes conveniently, has solved the unable problem of opening of traditional gate valve jam valve.

Preferably, clean the subassembly and include the slide, slide and lower valve body laminating, first spout has been seted up on the slide, sliding connection has the slide in the first spout, slide and guide bar sliding connection, slide one side is fixed with first wave shape piece, valve pocket shell inner wall is fixed with first wave shape piece looks adaptation second wave shape piece, slide one side is fixed with the scraper that cleans with the laminating of lower valve body, slide one side is installed and is used for carrying out broken subassembly to piling up glutinous granule, realizes corresponding fly ash through cleaning the subassembly and piles up the breakage and the cleaning of glutinous granule.

Preferably, broken subassembly includes two backup pads with slide fixed connection, two the backup pad rotates and is connected with first pivot pole, be fixed with a plurality of broken swoves on the first pivot pole, the one end that first pivot pole is close to the valve rod is fixed with first gear, and the rotation through broken sword can be effectual to the fly ash on the route pile up the glutinous granule and carry out the breakage, helps subsequent cleaing away, simple structure.

Preferably, the driving device comprises a driving motor fixedly connected with the supporting plate, the output end of the driving motor is fixedly connected with a second gear, the second gear is engaged with a third gear, a second rotating shaft is fixed on the third gear, a second chute is arranged on the sliding plate, two ends of the second rotating shaft are slidably connected with corresponding sliding plates through the second chute, fourth gears engaged with corresponding first gears are symmetrically fixed on the second rotating shaft, first springs are sleeved at two ends of the second transmission shaft, two ends of each first spring are respectively contacted with corresponding fourth gears and the corresponding sliding plate, the tooth width of each fourth gear is larger than that of each first gear, an auxiliary component for assisting the sliding plate to move is installed on the supporting plate, the second gear is driven through the driving motor, the third gear rotates, and then the second rotating shaft rotates to drive the corresponding fourth gear, drive first gear through the fourth gear and rotate to rotate through corresponding first axis of rotation and drive broken sword and rotate and will pile up the solid that the adhesion can be smashed, and at the removal in-process of valve rod, through mutually supporting of first wave form board and second wave form board, move forward when realizing maintaining certain swing, carry out breakage and clean the fly ash solid particle on the route, crushing effect is good.

Preferably, the auxiliary assembly is including the symmetry set up the slide opening on the cab apron, equal sliding connection has and corresponds slide plate fixed connection's slide bar in the slide opening, all cup jointed the second spring on the slide bar, the both ends of second spring contact with the slide of cab apron and correspondence respectively, through the effect of second spring, are favorable to providing the pressure of the orientation valve pocket shell lateral wall that lasts for the slide, help the long-term effectual contact of first wave form board and second wave form board.

Preferably, the cleaning scraper is inclined, which helps to guide the crushed and cleaned accumulated solid particles into a chute on the lower valve body, and then the accumulated particles flow into the lower valve body and flow to a subsequent combustion area of thermal power generation along with a subsequent gas-solid two-phase flow.

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 corresponding split type design of the 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 accumulated sticky particles are realized through the action of the ash removal device, the corresponding valve is facilitated to be opened, and the problem that the traditional gate valve is blocked and the valve cannot be opened is solved.

2. The sealing surface of the invention is designed to be vertical to the streamline direction, thus reducing the flow scouring and having good sealing effect; 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; packing and filler stack cooperation, spring bearing filler structure effectively eliminate and reveal.

Drawings

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

FIG. 2 is a schematic view 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 the sweeping assembly of 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 area C of FIG. 4;

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

In the figure: 1-an upper valve body; 2-lower valve body; 3-a valve chamber housing; 4-a valve stem; 5, mounting a block; 6-connecting blocks; 7-upper valve plate; 8-lower valve plate; 9-a wear resistant component; 10-a soot cleaning device; 11-a sleeve; 12-a sealing ring; 13-a chute; 14-a guide bar; 15-a sweeping assembly; 16-a transition plate; 17-a drive device; 18-a skateboard; 19-a first runner; 20-a slide; 21-a first wave shaped block; 22-a second wave shaped block; 23-cleaning scraper; 24-a crushing assembly; 25-a support plate; 26-a first turning lever; 27-a crushing knife; 28-a first gear; 29-a drive motor; 30-a second gear; 31-a third gear; 32-a second axis of rotation; 33-a second runner; 34-a fourth gear; 35-a first spring; 36-an auxiliary component; 37-a slide hole; 38-a slide bar; 39-second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: a gas-solid two-phase flow valve, which comprises an upper valve body 1, a lower valve body 2, a wear-resistant component 9 and a dust cleaning device 10, a valve cavity shell 3 is fixed between the upper valve body 1 and the lower valve body 2, a valve rod 4 penetrates through the valve cavity shell 3 in a sliding manner, one end of the valve rod 4 is connected with the driving execution device, the other end is fixed with a mounting block 5, a connecting block 6 is fixed on the mounting block 5, an upper valve plate 7 and a lower valve plate 8 which are jointed with the corresponding upper valve body 1 and the lower valve body 2 are respectively fixed on the two sides of the connecting block 6, the wear-resistant component 9 is mainly used for enhancing the wear resistance of the two-phase flow valve and improving the service performance of the two-phase flow valve, the wear-resistant component 9 is mounted on the upper valve body 1, the ash removal device 10 is mainly used for cleaning solid particles accumulated in a valve cavity of the two-phase flow gate valve and preventing the gate valve from being opened, and the ash removal device 10 is arranged on the mounting plate.

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, the one end that sleeve 11 is close to valve chamber shell 3 is fixed with sealing ring 12, one side and the coplane of last valve body 1 one side that sealing ring 12 is close to last valve plate 7, sealing ring 12 and sleeve 11's internal diameter all is less than 2 internal diameters of lower valve body, helps reducing the wearing and tearing of sealing ring 12 and sleeve 11, improves the whole life of valve, simultaneously through corresponding sleeve 11 and the split type design of last valve body 1, need not to change whole valve during the change, only need to change corresponding sleeve 11 and corresponding sealing ring 12 can, practice thrift the cost, convenient the dismantlement.

Ash removal device 10 is including offering chute 13 and two guide bar 14 that slide through with the mounting panel on valve body 2 down, two guide bar 14 symmetry sets up in 4 both sides of valve rod, the one end that the mounting panel was kept away from to guide bar 14 all with 3 inner wall fixed connection of valve pocket shell, the bilateral symmetry that valve body 2 is located chute 13 down is provided with and is used for clearing up the subassembly 15 that cleans of piling up solid particle, be fixed with cab apron 16 on the mounting panel, cross and install the drive arrangement 17 that is used for the drive to clean subassembly 15 on the cab apron 16, through ash removal device 10's effect, realize that corresponding fly ash piles up the breakage of gluing even granule and clean, help opening of corresponding valve, simple structure, it is convenient to realize, has solved traditional gate valve and has blockked up the problem that the valve can't open.

Clean subassembly 15 and include slide 18, slide 18 and the laminating of lower valve body 2, first spout 19 has 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 ripples piece

21, 3 inner walls of valve chamber shell are fixed with first ripples piece 21 looks adaptation second ripples piece 22, slide 18 one side is fixed with the scraper 23 that cleans with the laminating of lower valve body 2, slide 18 one side is installed and is used for carrying out broken subassembly 24 to piling up glutinous granule, realizes corresponding fly ash through cleaning subassembly 15 and piles up the breakage and the cleaning of gluing granule.

Broken subassembly 24 includes two backup pads 25 with slide 18 fixed connection, two backup pad 25 rotates and is connected with first rotation pole 26, be fixed with a plurality of broken swoves 27 on the first rotation pole 26, the one end that first rotation pole 26 is close to valve rod 4 is fixed with first gear 28, and the rotation through broken sword 27 can be effectual pile up glutinous granule to the fly ash on the path and carry out the breakage, helps subsequent clearance, simple 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 engaged with a third gear 31, a second rotating shaft 32 is fixed on the third gear 31, a second chute 33 is arranged on the sliding plate 18, two ends of the second rotating shaft 32 are both in sliding connection with the corresponding sliding plate 18 through the second chute 33, fourth gears 34 engaged with the corresponding first gears 28 are symmetrically fixed on the second rotating shaft 32, two ends of the second transmission shaft are both sleeved with first springs 35, two ends of each first spring 35 are respectively in contact with the corresponding fourth gear 34 and the corresponding sliding plate 18, the tooth width of the fourth gear 34 is larger than that of the first gear 28, an auxiliary component 36 used for assisting the sliding plate 18 to move is installed on the supporting plate 25, the driving motor 29 drives the second gear 30, the third gear 31 rotates, so that the second rotating shaft 32 rotates to drive the corresponding fourth gear 34, the fourth gear 34 drives the first gear 28 to rotate, the crushing cutter 27 is driven to rotate through the rotation of the corresponding first rotating shaft, the accumulated and adhered solid can be crushed, and in the moving process of the valve rod 4, the first corrugated plate and the second corrugated plate are matched with each other, so that the forward movement is realized while a certain swing amplitude is maintained, the fly ash solid particles on the path are crushed and cleaned, and the crushing effect is good.

The auxiliary assembly 36 comprises sliding holes 37 symmetrically formed in the transition plate 16, sliding rods 38 fixedly connected with corresponding sliding plates 18 are connected in the sliding holes 37 in a sliding mode, second springs 39 are sleeved on the sliding rods 38, two ends of each second spring 39 are in contact with the transition plate 16 and the corresponding sliding plate 18 respectively, continuous pressure towards the side wall of the valve cavity shell 3 is provided for the sliding plates 18 under the action of the second springs 39, and long-term effective contact of the first corrugated plate and the second corrugated plate is facilitated.

The cleaning scraper 23 is inclined, which helps to guide the broken and cleaned accumulated solid particles into the chute 13 on the lower valve body 2, and then the accumulated particles flow into the lower valve body 2 to flow to the subsequent combustion area of thermal power generation along with the subsequent gas-solid two-phase flow.

In the scheme, the working principle of the cleaning device is that when the gate valve needs to be opened, the actuating device is driven to drive the valve rod 4 to move and drive the mounting plate to move, the transition plate 16 moves simultaneously, at this time, the corresponding driving motor 29 is started, the second gear 30, the third gear 31 and the fourth gear 34 are sequentially driven to rotate through the driving motor 29, the first gear 28 is driven to rotate, the first rotating shaft is driven to rotate, the corresponding crushing cutter 27 is driven to rotate, the accumulated and adhered fly ash particles are crushed, meanwhile, the transition plate 16 is driven to move through the movement of the valve rod 4, the sliding plate 18 is driven to move through the sliding rod 38, under the action of the first wave plate and the second wave plate, the sliding plate 18 swings to a certain extent in the moving process, in the swinging process, the pressure of the sliding plate 18 towards the valve cavity shell 3 is kept continuously under the action of the first spring 35 and the second spring 39, the first corrugated plate and the second corrugated plate are continuously contacted, in the swinging process, the first gear 28 can slide on the fourth gear 34 relatively, corresponding meshing transmission is guaranteed, at the moment, the crushing area of the crushing cutter 27 is expanded along with the swinging of the sliding plate 18, the fly ash can be more comprehensively crushed, adhered solid particles are accumulated, meanwhile, the accumulated particles are scraped by the design of the cleaning scraper 23 and are guided into the chute 13 of the lower valve body 2, and the particles flow to the subsequent combustion area of thermal power generation along with the subsequent gas-solid two-phase flow.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 utility model provides a gas-solid two-phase flow valve, includes valve body (1) and lower valve body (2), it has valve chamber shell (3) to go up to be fixed with between valve body (1) and lower valve body (2), valve chamber shell (3) slide to run through has valve rod (4), valve rod (4) one end is connected with drive executive device, and the other end is fixed with installation piece (5), be fixed with connecting block (6) on installation piece (5), the both sides of connecting block (6) are fixed with respectively and correspond last valve plate (7) and lower valve plate (8) of going up valve body (1) and lower valve body (2) laminating, and its characterized in that still includes:

the wear-resistant component (9), 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, and the wear-resistant component (9) is installed on the upper valve body (1);

the device comprises a dust removing device (10), wherein the dust removing device (10) is mainly used for cleaning solid particles accumulated in a valve cavity of a two-phase flow gate valve and preventing the gate valve from being opened, and the dust removing device (10) is arranged on a mounting plate.

2. A gas-solid two-phase flow valve according to claim 1, wherein: wear-resisting subassembly (9) include sleeve (11) that cup joints with last valve body (1), sleeve (11) are fixed on last valve body (1) through the screw, the one end that sleeve (11) are close to valve chamber shell (3) is fixed with sealing ring (12), one side that sealing ring (12) are close to last valve plate (7) and last valve body (1) one side coplane, the internal diameter of sealing ring (12) and sleeve (11) all is less than down valve body (2) internal diameter.

3. A gas-solid two-phase flow valve according to claim 1, wherein: deashing device (10) are including offering chute (13) and two guide bar (14) that slide and run through with the mounting panel on lower valve body (2), two guide bar (14) symmetry sets up in valve rod (4) both sides, the one end that the mounting panel was kept away from in guide bar (14) all with valve chamber shell (3) inner wall fixed connection, the bilateral symmetry that lower valve body (2) are located chute (13) is provided with cleaning subassembly (15) that are used for the clearance to pile up solid particle, be fixed with cab apron (16) on the mounting panel, install drive arrangement (17) that are used for the drive to clean subassembly (15) on cab apron (16).

4. A gas-solid two-phase flow valve according to claim 3, wherein: clean subassembly (15) including slide (18), slide (18) and lower valve body (2) laminating, 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 ripples piece (21), valve chamber shell (3) inner wall is fixed with first ripples piece (21) looks adaptation second ripples piece (22), slide (18) one side is fixed with cleans scraper (23) with lower valve body (2) laminating, slide (18) one side is installed and is used for carrying out broken subassembly (24) to piling up glutinous granule.

5. A gas-solid two-phase flow valve according to claim 4, wherein: broken subassembly (24) include two backup pad (25) with slide (18) fixed connection, two backup pad (25) are rotated and are connected with first rotation pole (26), be fixed with a plurality of broken sword (27) on first rotation pole (26), the one end that first rotation pole (26) are close to valve rod (4) is fixed with first gear (28).

6. A gas-solid two-phase flow valve according to claim 3, wherein: 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 chute (33) is formed in the sliding plate (18), two ends of the second rotating shaft (32) are connected with the corresponding sliding plate (18) in a sliding mode through the second sliding chute (33), fourth gears (34) meshed with the corresponding first gears (28) are symmetrically fixed on the second rotating shaft (32), first springs (35) are sleeved at two ends of a second transmission shaft, two ends of each first spring (35) are respectively contacted with the corresponding fourth gear (34) and the corresponding sliding plate (18), and the tooth width of each fourth gear (34) is larger than that of the corresponding first gear (28), an auxiliary assembly (36) for assisting the sliding plate (18) to move is arranged on the supporting plate (25).

7. A gas-solid two-phase flow valve according to claim 6, characterized in that: the auxiliary assembly (36) comprises sliding holes (37) symmetrically formed in the transition plate (16), sliding rods (38) fixedly connected with corresponding sliding plates (18) are connected in the sliding holes (37) in a sliding mode, second springs (39) are sleeved on the sliding rods (38), and two ends of each second spring (39) are respectively in contact with the transition plate (16) and the corresponding sliding plate (18).

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