CN209944309U

CN209944309U - Dense phase output system of circulating fluidized bed boiler

Info

Publication number: CN209944309U
Application number: CN201920560318.3U
Authority: CN
Inventors: 石健文; 闫乐乐; 陈喜
Original assignee: SHAANXI COKE CHEMICAL CO Ltd
Current assignee: SHAANXI COKE CHEMICAL CO Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-01-14
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a circulating fluidized bed boiler concentrated phase output system, including the bin pump, the lower surface mounting of bin pump is fixed with the ejection of compact pipeline, the surface of ejection of compact pipeline is connected with the gulp valve through the pressure pipe, the one end of gulp valve is provided with anti-abrasion mechanism, anti-abrasion mechanism includes gas transmission pressure pipe, relief pressure valve, positioning flange, sealed recess, positioning lead screw, through-hole, sealing washer, fastening nut, connecting hole and sealing flange, the one end of gas transmission pressure pipe is connected with the gulp valve; the utility model discloses a relief pressure valve is connected fixedly with gas transmission pressure pipe, establishes the surface at positioning screw through the through-hole cover to the sealing washer earlier, inserts the inside of sealed recess to sealing flange afterwards, makes things convenient for the relief pressure valve to connect the one end of fixing at gas transmission pressure pipe, thereby and can make air supply pressure reduce through the relief pressure valve and make defeated grey speed reduce, reduces the wearing and tearing of fly ash and pipeline to the life of defeated grey pipeline, bleeder valve, ejection of compact pipeline, gulp valve has been prolonged.

Description

Dense phase output system of circulating fluidized bed boiler

Technical Field

The utility model belongs to the technical field of the dense phase output of boiler, concretely relates to circulating fluidized bed boiler dense phase output system.

Background

In the conveying process of the fly ash, the fly ash (with the particle size of 0.1-16 microns) collected by the bag-type dust remover enters the bin pump through the ash hopper through the feed valve, and then the fly ash in the bin pump is fluidized by compressed air from a pipe network and enters the ash warehouse through the ash conveying pipeline and the discharge valve under the action of conveying gas and the air replenishing valve.

In the existing boiler ash conveying process, due to the operation defect of an original feeding ball valve and overlarge air supply pressure, the abrasion of ash and a valve (pipeline) is increased due to the fact that the conveying speed of fly ash is large in the ash conveying process, so that the system is maintained frequently, the use cost of the boiler is increased, the material consumption is increased, and the operation is unstable.

Disclosure of Invention

An object of the utility model is to provide a dense phase output system of circulating fluidized bed boiler to propose the present boiler ash conveying in-process among the above-mentioned background art of solution, because former feeding ball valve operation defect and tonifying qi pressure are too big, thereby it leads to the wearing and tearing of ash and valve (pipeline) to increase to arouse that the system overhauls frequently to make ash conveying in-process fly ash conveying speed big on the large side, increases boiler use cost, thereby leads to the material consumption to increase and move unstable problem.

In order to achieve the above object, the utility model provides a following technical scheme: dense phase output system of circulating fluidized bed boiler, including the storehouse pump, the upside of storehouse pump is connected and is fixed with the ash bucket, the lower surface mounting of storehouse pump is fixed with ejection of compact pipeline, the surface of ejection of compact pipeline is connected with the gulp valve through the pressure pipe, the surface mounting of storehouse pump is fixed with the control box, the one end of gulp valve is provided with wear-resisting mechanism, wear-resisting mechanism includes gas transmission pressure pipe, relief pressure valve, flange, sealed recess, positioning screw, through-hole, sealing washer, fastening nut, connecting hole and sealing flange, the one end and the gulp valve of gas transmission pressure pipe are connected, the other end of gas transmission pressure pipe is connected with the relief pressure valve, the one end of relief pressure valve is connected with total air supply pipe, sealing flange symmetry installation is fixed in the both sides of relief pressure valve, flange symmetry installation is fixed at the both ends of gas transmission pressure pipe, sealed recess is seted, sealed recess and sealing flange phase-match block, the internal surface at sealed recess is fixed in the installation of location lead screw symmetry, the one end of location lead screw runs through the inside of through-hole and connecting hole in proper order and the cover is established and is fixed with fastening nut, the through-hole is equally spaced apart to be established on the surface of sealing washer and the same with the aperture of connecting hole, the surface at sealing flange is established to the connecting hole equally spaced apart, the top of control box is provided with fixed establishment.

Preferably, the fixing mechanism comprises a limiting protrusion, a U-shaped handle, fixing columns, a movable hole, a connecting cover and a threaded rod, the U-shaped handle is fixedly installed at the middle position of the upper surface of the control box, the fixing columns are symmetrically and fixedly installed on the side surfaces of the U-shaped handle, the limiting protrusion is fixedly installed at one end of each fixing column and placed inside the connecting cover, the connecting cover is sleeved on the surface of each fixing column through the movable hole, the movable hole is formed in the side surface of the connecting cover and communicated with the inside of the connecting cover, internal threads are formed in the inner surface of the connecting cover, the threaded rod is symmetrically installed and fixed on the surface of the bin pump and matched with the connecting cover, and external threads are arranged on the outer surface of the threaded rod and matched and screwed with the inner.

Preferably, the top of storehouse pump is provided with the feed inlet, the feed inlet top is connected with double-gate feeding plate valve, the top of double-gate feeding plate valve is connected with the ash bucket.

Preferably, the side surface of the discharge pipeline is connected with an ash conveying pipeline, one end of the ash conveying pipeline is connected with a discharge valve, and one end of the discharge valve is connected with an ash warehouse through a pipeline.

Preferably, the surface of control box is provided with the control button, the control button upside is provided with the display screen.

Preferably, the bottom of the outer surface of the bin pump is symmetrically provided with and fixed with supporting legs, and the bottom ends of the supporting legs are fixed with anti-skid plates.

Preferably, the upper side of the ash bucket is connected with a bag-type dust collector.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a when relief pressure valve and defeated pneumatic tube are connected fixedly, earlier establish the sealing washer on positioning screw's surface through the through-hole cover, insert the inside of sealed recess to sealing flange afterwards, let positioning screw one end through connection hole's inside and cover establish fixed fastening nut simultaneously, make things convenient for the relief pressure valve to connect the one end of fixing at defeated pneumatic tube, improve workman's work efficiency, thereby and can make air supply pressure reduce through the relief pressure valve and make defeated grey speed reduce, reduce the wearing and tearing of fly ash and pipeline, and the defeated grey pipeline has been prolonged, the bleeder valve, the discharge pipeline, the life of gulp valve.

(2) The utility model discloses a connect lid and threaded rod to close fixedly through the screw thread soon and be difficult for droing, increase the fastness of control box on storehouse pump surface, the surface in storehouse pump is placed in the installation of the control box of being convenient for, and anticlockwise rotation connects the lid can dismantle the control box of taking off when the control box damages when needing the maintenance, and can make things convenient for the control box to mention the removal through U type handle, makes things convenient for the control box to dismantle the maintenance and installs fixedly again, improves workman's work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged cross-sectional view of the area a in fig. 1 according to the present invention;

fig. 3 is an enlarged cross-sectional view of the area B in fig. 1 according to the present invention;

fig. 4 is a schematic view of the front view structure of the control box of the present invention;

FIG. 5 is a schematic structural view of the pressurization and depressurization route of the present invention;

in the figure: 1. an ash hopper; 2. a double gate feed plate valve; 3. a bin pump; 4. a discharge pipeline; 5. an ash conveying pipeline; 6. a discharge valve; 7. a gas transmission pressure pipe; 8. a pressure reducing valve; 9. an air supply valve; 10. a control box; 11. positioning the flange; 12. sealing the groove; 13. positioning a screw rod; 14. a through hole; 15. a seal ring; 16. fastening a nut; 17. connecting holes; 18. sealing the flange; 19. a limiting bulge; 20. a U-shaped handle; 21. fixing a column; 22. a movable hole; 23. a connecting cover; 24. a threaded rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution: the dense phase output system of the circulating fluidized bed boiler comprises a bin pump 3, an ash bucket 1 is fixedly connected to the upper side of the bin pump 3, a discharge pipeline 4 is fixedly mounted on the lower surface of the bin pump 3, the surface of the discharge pipeline 4 is connected with an air compensating valve 9 through a pressure pipe, a control box 10 is fixedly mounted on the surface of the bin pump 3, one end of the air compensating valve 9 is provided with an anti-abrasion mechanism, the anti-abrasion mechanism comprises a gas transmission pressure pipe 7, a pressure reducing valve 8, a positioning flange 11, a sealing groove 12, a positioning screw rod 13, a through hole 14, a sealing ring 15, a fastening nut 16, a connecting hole 17 and a sealing flange 18, one end of the gas transmission pressure pipe 7 is connected with the air compensating valve 9, the other end of the gas transmission pressure pipe 7 is connected with the pressure reducing valve 8, one end of the pressure reducing valve 8 is connected with a main gas source pipe, the sealing groove 12 is arranged on the side surface of the positioning flange 11, the sealing groove 12 is matched and clamped with the sealing flange 18, the positioning screw rod 13 is symmetrically installed and fixed on the inner surface of the sealing groove 12, one end of the positioning screw rod 13 sequentially penetrates through the through hole 14 and the inside of the connecting hole 17 and is fixedly sleeved with the fastening nut 16, the through holes 14 are equidistantly arranged on the surface of the sealing ring 15 and are the same as the aperture of the connecting hole 17, the connecting holes 17 are equidistantly arranged on the surface of the sealing flange 18, when the pressure reducing valve 8 is fixedly connected with the gas transmission pressure pipe 7, the sealing ring 15 is firstly sleeved on the surface of the positioning screw rod 13 through the through hole 14, then the sealing flange 18 is inserted into the sealing groove 12, and simultaneously one end of the positioning screw rod 13 penetrates through the inside of the connecting hole 17 and is fixedly sleeved with the fastening nut 16, so that the, and the pressure of the air source can be reduced through the pressure reducing valve 8, so that the ash conveying speed is reduced, the abrasion of the fly ash and the pipeline is reduced, the pressure of the air source is reduced from 0.6MPa and stabilized to 0.35Mp after the transformation, the operation of an ash conveying system is more stable, the system maintenance frequency and the material consumption are greatly reduced, the service lives of the ash conveying pipeline 5, the discharge valve 6, the discharge pipeline 4 and the air supply valve 9 are prolonged, and the top end of the control box 10 is provided with a fixing mechanism.

In this embodiment, preferably, the fixing mechanism includes a limiting protrusion 19, a U-shaped handle 20, a fixing column 21, a movable hole 22, a connecting cover 23 and a threaded rod 24, the U-shaped handle 20 is installed and fixed at the middle position of the upper surface of the control box 10, the fixing column 21 is symmetrically installed and fixed on the side surface of the U-shaped handle 20, the limiting protrusion 19 is installed and fixed at one end of the fixing column 21 and placed inside the connecting cover 23, the connecting cover 23 is sleeved on the surface of the fixing column 21 through the movable hole 22, the movable hole 22 is opened on the side surface of the connecting cover 23 and communicated with the inside of the connecting cover 23, the inner surface of the connecting cover 23 is provided with an internal thread, the threaded rod 24 is symmetrically installed and fixed on the surface of the bin pump 3 and matched with the connecting cover 23, the outer surface of the threaded rod 24 is provided with an external thread and matched and screwed with the inner surface, increase the fastness on storehouse pump 3 surface of control box 10, the surface of placing at storehouse pump 3 is installed to the control box 10 of being convenient for, and anticlockwise swivelling joint lid 23 can dismantle when control box 10 damages needs maintenance and take off control box 10, and can make things convenient for control box 10 to mention the removal through U type handle 20, makes things convenient for control box 10 to dismantle the maintenance and installs fixedly again, improves workman's work efficiency.

In this embodiment, preferably, the top of storehouse pump 3 is provided with the feed inlet, and the feed inlet top is connected with double-gate feed plate valve 2, and the top of double-gate feed plate valve 2 is connected with ash bucket 1, through double-gate feed plate valve 2 leakproofness and stand wear and tear, the ash of the ash bucket 1 inside of being convenient for gets into inside storehouse pump 3.

In this embodiment, preferably, the side surface of the discharge pipeline 4 is connected with an ash conveying pipeline 5, one end of the ash conveying pipeline 5 is connected with a discharge valve 6, and one end of the discharge valve 6 is connected with an ash storehouse through a pipeline, so that materials in an ash conveying system can be conveniently stored in the ash storehouse.

In this embodiment, preferably, the surface of the control box 10 is provided with a control button, and the upper side of the control button is provided with a display screen, so that a worker can operate and control the operation of the bin pump 3 conveniently.

In this embodiment, preferably, the bottom of the outer surface of the bin pump 3 is symmetrically provided with and fixed with supporting legs, and the bottom ends of the supporting legs are fixed with anti-skid plates, which is helpful for increasing the stability of the bin pump 3 on the ground.

In this embodiment, preferably, the upper side of the ash bucket 1 is connected with a bag-type dust collector, which is convenient for purifying flue gas and reaching the emission standard.

The pressure reducing valve of the utility model is DN-40.

The utility model discloses a theory of operation and use flow: the utility model discloses a when using, earlier laminate control box 10 on the surface of storehouse pump 3, let connecting cover 23 cover at threaded rod 24 tip simultaneously, clockwise rotation connects cover 23 to make connecting cover 23 and threaded rod 24 close fixedly soon afterwards, then when letting relief pressure valve 8 be connected fixedly with the one end of gas transmission pressure pipe 7, place sealing washer 15 in the inside of sealed recess 12 earlier, let through-hole 14 cover on positioning screw 13 simultaneously, then insert the inside of sealed recess 12 to sealed flange 18, and let connecting hole 17 with overlap on positioning screw 13, 16 covers fastening nut 16 at positioning screw 13 one end and clockwise rotation fastening nut 16 afterwards, make sealed flange 18 firmly in positioning flange 11's inside, and avoid relief pressure valve 8 and gas transmission pressure pipe 7 junction gas leakage through the leakproofness of sealing washer 15, can use this utility model after the installation is accomplished.

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. Dense phase output system of circulating fluidized bed boiler, including storehouse pump (3), the upside connection of storehouse pump (3) is fixed with ash bucket (1), the under surface mounting of storehouse pump (3) is fixed with ejection of compact pipeline (4), the surface of ejection of compact pipeline (4) is connected with aeration valve (9) through the pressure pipe, the surface mounting of storehouse pump (3) is fixed with control box (10), its characterized in that:

one end of the air compensating valve (9) is provided with an anti-abrasion mechanism, the anti-abrasion mechanism comprises an air conveying pressure pipe (7), a pressure reducing valve (8), a positioning flange (11), a sealing groove (12), a positioning screw rod (13), a through hole (14), a sealing ring (15), a fastening nut (16), a connecting hole (17) and a sealing flange (18), one end of the air conveying pressure pipe (7) is connected with the air compensating valve (9), the other end of the air conveying pressure pipe (7) is connected with the pressure reducing valve (8), one end of the pressure reducing valve (8) is connected with a main air source pipe, the sealing flanges (18) are symmetrically installed and fixed on two sides of the pressure reducing valve (8), the positioning flanges (11) are symmetrically installed and fixed at two ends of the air conveying pressure pipe (7), the sealing groove (12) is arranged on the side face of the positioning flange (11), and the sealing groove (12) is matched and, the internal surface at sealed recess (12) is fixed in the installation of location lead screw (13) symmetry, the one end of location lead screw (13) runs through the inside and the cover of through-hole (14) and connecting hole (17) in proper order and is established and be fixed with fastening nut (16), through-hole (14) are equally spaced apart to be established on the surface of sealing washer (15) and the same with the aperture of connecting hole (17), connecting hole (17) are equally spaced apart to be established on the surface of sealing flange (18), the top of control box (10) is provided with fixed establishment.

2. The circulating fluidized bed boiler dense phase output system of claim 1, wherein: the fixing mechanism comprises a limiting bulge (19), a U-shaped handle (20), a fixing column (21), a movable hole (22), a connecting cover (23) and a threaded rod (24), the U-shaped handle (20) is fixedly installed at the middle position of the upper surface of the control box (10), the fixing column (21) is fixedly installed on the side surface of the U-shaped handle (20) in a symmetrical mode, the limiting bulge (19) is fixedly installed at one end of the fixing column (21) and placed inside the connecting cover (23), the connecting cover (23) is sleeved on the surface of the fixing column (21) through the movable hole (22), the movable hole (22) is formed in the side surface of the connecting cover (23) and communicated with the inside of the connecting cover (23), an internal thread is arranged on the inner surface of the connecting cover (23), the threaded rod (24) is symmetrically installed and fixed on the surface of the bin pump (3) and matched with the connecting cover (23), the outer surface of the threaded rod (24) is provided with external threads and is matched and screwed with the inner surface of the connecting cover (23).

3. The circulating fluidized bed boiler dense phase output system of claim 1, wherein: the top of storehouse pump (3) is provided with the feed inlet, the feed inlet top is connected with double-gate feeding plate valve (2), the top of double-gate feeding plate valve (2) is connected with ash bucket (1).

4. The circulating fluidized bed boiler dense phase output system of claim 1, wherein: the side of discharge pipeline (4) is connected with defeated grey pipeline (5), the one end of defeated grey pipeline (5) is connected with bleeder valve (6), the one end of bleeder valve (6) has the ash storehouse through the pipe connection.

5. The circulating fluidized bed boiler dense phase output system of claim 1, wherein: the surface of the control box (10) is provided with a control key, and the upper side of the control key is provided with a display screen.

6. The circulating fluidized bed boiler dense phase output system of claim 1, wherein: supporting legs are symmetrically and fixedly arranged at the bottom of the outer surface of the bin pump (3), and anti-slip plates are fixed at the bottom ends of the supporting legs.

7. The circulating fluidized bed boiler dense phase output system of one of claims 1-6, wherein: the upper side of the ash bucket (1) is connected with a bag-type dust collector.