CN217675026U

CN217675026U - Combined stranding cage suitable for conveying powder between adjacent boilers

Info

Publication number: CN217675026U
Application number: CN202220553572.2U
Authority: CN
Inventors: 王飞; 王斌; 陈平; 李恒旭; 张志杰
Original assignee: Huaneng Weihai Power Generation Co Ltd
Current assignee: Huaneng Weihai Power Generation Co Ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-10-28
Anticipated expiration: 2032-03-15

Abstract

The utility model discloses a combine hank cage suitable for defeated powder between adjacent boiler, including conveying unit and drive unit, two boilers of conveying unit connection to defeated powder carries out between two boilers, and drive unit is used for driving the screw rod and rotates. The conveying unit comprises a shell, a screw rod arranged in the shell and a discharging assembly arranged below the shell, wherein a feeding hole is formed in the shell. The device of the utility model connects the adjacent boilers through the combined stranding cage to convey the powder, thereby obviously reducing the starting cost of the boilers and saving a large amount of fuel oil; and the stranding cage can convey the powder to two powder bins on average through the arrangement of the material blocking part, the first pipeline and the second pipeline.

Description

Combined twisting cage suitable for conveying powder between adjacent boilers

Technical Field

The utility model relates to a thermal power generating unit powder process technical field, especially a combine hank cage suitable for defeated powder between adjacent boiler.

Background

Along with the year-by-year increase of the proportion of new energy power generation in a power grid in China, the starting and stopping frequency of a thermal power generating unit is greatly improved, the frequent starting and stopping conditions are not considered when most of the thermal power generating units are designed at present, a large amount of fuel oil is consumed in the starting process, the starting and stopping cost of the unit is extremely high, the thermal power generating unit is very unfavorable, in the normal starting process, 8 oil guns need to be put into a 300MW unit, the oil consumption of each oil gun is about 1T/H, the powder exhauster can be started only when the outlet hot air temperature of a boiler air preheater exceeds 100 ℃, the coal mill can be started only after the heating mill lasts for more than half an hour, the coal mill can be generally started for about one hour, a large amount of fuel oil is consumed in the process, and economic operation is influenced.

At present, a self-sufficient method is generally adopted for a powder making system of a thermal power generating unit, namely, the self-sufficient method is used for making powder, the advantages of adjacent furnaces are not reasonably utilized, and the following defects exist under the condition that the unit is frequently started and stopped:

1. the starting cost of the unit is greatly increased, and generally, about 30 tons of fuel oil is consumed for starting one 300MW unit at a time, so that the value is hundreds of thousands;

2. the heating and boosting rate is lower at the initial stage of boiler starting, and the starting time of the unit is prolonged;

3. the requirements of the grid dispatch cannot be responded to quickly.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the above and/or other problems associated with the prior art combined hank cages for transporting flour between adjacent boilers.

Therefore, the utility model aims to solve the problem how to provide a combine hank cage suitable for defeated powder between adjacent boiler.

In order to solve the technical problem, the utility model provides a following technical scheme: a combined stranding cage suitable for conveying powder between adjacent boilers comprises a conveying unit, a feeding unit and a discharging unit, wherein the conveying unit comprises a shell, a screw rod arranged in the shell and a discharging assembly arranged below the shell, and a feeding hole is formed in the shell; the driving unit is arranged on the side surface of the conveying unit and used for driving the screw to rotate; the discharging assembly comprises a material carrying pipeline fixedly connected with the shell, a closing member arranged at the end part of the material carrying pipeline, a discharging pipeline arranged below the closing member, and a material blocking member arranged in the discharging pipeline, the closing member is connected with the material carrying pipeline and the discharging pipeline, and the discharging pipeline comprises a connecting pipeline connected with the closing member, and a first pipeline and a second pipeline which are symmetrically arranged.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the closing part comprises a connecting piece for connecting the material loading pipeline and the connecting pipeline and an inserting plate in sliding fit with the connecting piece.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the connecting piece is provided with a jack, and the inserting plate is matched with the jack.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the inserting plate is an L-shaped plate.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: keep off the material including with connecting tube inner wall articulated baffle, and connect the baffle with the elastic component of connecting tube inner wall, baffle and elastic component symmetry set up, two when the baffle level set up, the terminal surface contacts each other.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the symmetry plane of the baffle and the elastic piece is perpendicular to the symmetry plane of the first pipeline and the second pipeline.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the discharging assembly further comprises a first plugging plate arranged on the first pipeline and a second plugging plate arranged on the second pipeline, the first plugging plate is in sliding fit with the first pipeline, and the second plugging plate is in sliding fit with the second pipeline.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the first plugging plate and the second plugging plate are symmetrically arranged.

As a preferred scheme of defeated combination hank cage of powder between adjacent boiler is applicable to, wherein: the discharging assembly is arranged along the shell in a plurality.

As a preferred scheme suitable for defeated combined hank cage of powder between adjacent boiler, wherein: the driving unit comprises a first gear arranged at the end part of the screw rod, a motor arranged on the side surface of the shell, a second gear connected with the output end of the motor, and a chain connected with the first gear and the second gear.

The utility model discloses beneficial effect does: the adjacent boilers are connected through the combined twisting cage for powder conveying, so that the starting cost of the boilers is obviously reduced, and a large amount of fuel oil can be saved; and the stranding cage can convey the powder to two powder bins on average through the arrangement of the material blocking part, the first pipeline and the second pipeline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor. Wherein:

FIG. 1 is a block diagram of a combined windlass suitable for powder transport between adjacent boilers.

Fig. 2 is a view showing the construction of a driving unit of a combined hank cage suitable for transporting flour between adjacent boilers.

FIG. 3 is a schematic diagram of a discharge assembly of a combined windlass suitable for powder transport between adjacent boilers.

FIG. 4 is a block diagram of the closure of the combined windlass suitable for powder transfer between adjacent boilers.

Fig. 5 is a diagram of a material blocking member of the combined twisting cage suitable for conveying powder between adjacent boilers.

FIG. 6 is a cross-sectional view of a discharge assembly of a combined windlass adapted for powder transport between adjacent boilers.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, other ways of implementing the invention may be devised different from those described herein, and it will be apparent to those skilled in the art that the invention can be practiced without departing from the spirit and scope of the invention.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 6, for the first embodiment of the present invention, this embodiment provides a combined screw conveyor suitable for conveying powder between adjacent boilers, and the combined screw conveyor suitable for conveying powder between adjacent boilers includes conveying unit 100 and driving unit 200, and conveying unit 100 connects two boilers to convey powder between two boilers, and driving unit 200 is used to drive screw 102 to rotate.

Specifically, the conveying unit 100 includes a casing 101, a screw 102 disposed inside the casing 101, and a discharging assembly 103 disposed below the casing 101, where a feeding port 101a is disposed on the casing 101, and the feeding ports 101a are disposed at two ends of the casing 101 and are respectively communicated with powder discharging pipelines of two boilers. The discharging assembly 103 comprises a material loading pipeline 103a fixedly connected with the shell 101, a closing member 103b arranged at the end part of the material loading pipeline 103a, a discharging pipeline 103c arranged below the closing member 103b, and a material blocking member 103d arranged in the discharging pipeline 103c, wherein the closing member 103b is connected with the material loading pipeline 103a and the discharging pipeline 103c, the discharging pipeline 103c comprises a connecting pipeline 103b-3 connected with the closing member 103b, and a first pipeline 103c-1 and a second pipeline 103c-2 which are symmetrically arranged.

The driving unit 200 includes a first gear 201 disposed at an end of the screw 102, a motor 202 disposed at a side of the housing 101, a second gear 203 connected to an output end of the motor 202, and a chain 204 connecting the first gear 201 and the second gear 203.

Further, the closing member 103b comprises a connecting member 103b-1 for connecting the material loading pipeline 103a and the connecting pipeline 103b-3, and an inserting plate 103b-2 in sliding fit with the connecting member 103b-1, wherein the connecting member 103b-1 is provided with a plug hole 103b-11, and the inserting plate 103b-2 is matched with the plug hole 103 b-11. Preferably, the plug board 103b-2 is an L-shaped board, one longer side of the L-shaped board is inserted into the plug hole 103b-11, and the shorter side of the L-shaped board is convenient for an operator to pull out the plug board 103b-2.

Preferably, the baffle 103d includes a baffle 103d-1 hinged to the inner wall of the connecting pipe 103b-3, and an elastic member 103d-2 connecting the baffle 103d-1 and the inner wall of the connecting pipe 103b-3, the baffle 103d-1 and the elastic member 103d-2 are symmetrically arranged, and when the two baffles 103d-1 are horizontally arranged, the end surfaces contact with each other, in this embodiment, the elastic member 103d-2 is a spring, and under the condition of no external force, the baffle 103d-1 will be kept horizontal under the action of the elastic member 103d-2, at this time, the two baffles 103d-1 will block the connecting pipe 103b-3 completely, so that the powder cannot fall down, and when the powder on the baffle 103d-1 is gathered to a certain degree, the weight of the powder will press the baffle 103d-1 to open it, so that the powder can fall down.

Preferably, the symmetry plane of the baffle plate 103d-1 and the elastic member 103d-2 and the symmetry plane of the first duct 103c-1 and the second duct 103c-2 are perpendicular to each other.

It should be noted that, since the screw 102 continuously pushes the powder to move forward, the powder is not uniformly distributed when falling in the material loading pipeline 103a, and the powder is certainly dropped against the side surface of the material loading pipeline 103a, at this time, if the material blocking member 103d is not provided, the powder output by the first pipeline 103c-1 and the second pipeline 103c-2 is certainly different, and by the arrangement of the material blocking member 103d, the powder can be firstly gathered in the material loading pipeline 103a, and when the powder is gathered to a certain weight, the baffle 103d-1 is opened, the powder can fall, and at this time, the powder in the material loading pipeline 103a is relatively uniformly distributed, and then is relatively uniformly divided into two parts by a sharp corner formed at the connection of the first pipeline 103c-1 and the second pipeline 103c-2, so as to achieve the effect of uniform distribution.

Further, the discharging assembly 103 further includes a first blocking plate 103e disposed on the first pipeline 103c-1, and a second blocking plate 103f disposed on the second pipeline 103c-2, where the first blocking plate 103e is in sliding fit with the first pipeline 103c-1, and the second blocking plate 103f is in sliding fit with the second pipeline 103c-2. The first blocking plate 103e and the second blocking plate 103f are symmetrically arranged.

Since there may be multiple powder silos in each boiler unit, there may be multiple hopper assemblies 103 along the housing 101.

The device of the utility model obviously reduces the starting cost of the boiler and saves a large amount of fuel oil; the flexibility of the two units is improved, and interconnection and intercommunication of the pulverizing systems are realized; because the powder can be poured in advance, the powder feeder can be put into operation in advance, and the speed of temperature rise and pressure rise of the boiler is improved, so that the starting time of the unit is obviously reduced; the transformation cost is low, the system maintenance is simple, the operation is convenient, and the practicability is strong; the peak regulation requirement can be quickly responded to and dispatched, and the unit can be quickly started.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a combine hank cage suitable for defeated powder between adjacent boiler which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the conveying unit (100) comprises a shell (101), a screw (102) arranged in the shell (101), and a discharging assembly (103) arranged below the shell (101), wherein a feeding hole (101 a) is formed in the shell (101);

the driving unit (200) is arranged on the side surface of the conveying unit (100) and is used for driving the screw rod (102) to rotate;

the discharging assembly (103) comprises a material carrying pipeline (103 a) fixedly connected with the shell (101), a closing part (103 b) arranged at the end part of the material carrying pipeline (103 a), a discharging pipeline (103 c) arranged below the closing part (103 b), and a material blocking part (103 d) arranged in the discharging pipeline (103 c), wherein the closing part (103 b) is connected with the material carrying pipeline (103 a) and the discharging pipeline (103 c), the discharging pipeline (103 c) comprises a connecting pipeline (103 b-3) connected with the closing part (103 b), and a first pipeline (103 c-1) and a second pipeline (103 c-2) which are symmetrically arranged.

2. A combined windlass as defined in claim 1 adapted for use in the transfer of fines between adjacent boilers, wherein: the closing part (103 b) comprises a connecting piece (103 b-1) for connecting the material loading pipeline (103 a) and the connecting pipeline (103 b-3), and an insert plate (103 b-2) which is matched with the connecting piece (103 b-1) in a sliding way.

3. A combined windlass as defined in claim 2 adapted for use in the transfer of fines between adjacent boilers, wherein: the connecting piece (103 b-1) is provided with a jack (103 b-11), and the inserting plate (103 b-2) is matched with the jack (103 b-11).

4. A combined windlass as defined in claim 3 adapted for use in the transfer of fines between adjacent boilers, wherein: the inserting plate (103 b-2) is an L-shaped plate.

5. A combined windlass as defined in any one of claims 1, 2 or 4, adapted for powder transfer between adjacent boilers, wherein: the material blocking part (103 d) comprises a baffle (103 d-1) hinged with the inner wall of the connecting pipeline (103 b-3) and an elastic part (103 d-2) connected with the baffle (103 d-1) and the inner wall of the connecting pipeline (103 b-3), the baffle (103 d-1) and the elastic part (103 d-2) are symmetrically arranged, and when the two baffles (103 d-1) are horizontally arranged, the end faces are in contact with each other.

6. A combined windlass as defined in claim 5, adapted for powder transfer between adjacent boilers, wherein: the symmetry plane of the baffle plate (103 d-1) and the elastic member (103 d-2) is perpendicular to the symmetry plane of the first conduit (103 c-1) and the second conduit (103 c-2).

7. A combined windlass as defined in claim 6, adapted for powder transfer between adjacent boilers, wherein: the discharging assembly (103) further comprises a first blocking plate (103 e) arranged on the first pipeline (103 c-1) and a second blocking plate (103 f) arranged on the second pipeline (103 c-2), the first blocking plate (103 e) is in sliding fit with the first pipeline (103 c-1), and the second blocking plate (103 f) is in sliding fit with the second pipeline (103 c-2).

8. A combined windlass as defined in claim 7, adapted for powder transfer between adjacent boilers, wherein: the first plugging plate (103 e) and the second plugging plate (103 f) are symmetrically arranged.

9. A combined windlass as defined in claim 8 adapted for use in the transfer of fines between adjacent boilers, wherein: the discharging assembly (103) is arranged along the shell (101) in a plurality.

10. A combined windlass as defined in any one of claims 1, 2, 4, 6, 7 or 9, adapted for powder transfer between adjacent boilers, wherein: the driving unit (200) comprises a first gear (201) arranged at the end part of the screw (102), a motor (202) arranged on the side surface of the shell (101), a second gear (203) connected with the output end of the motor (202), and a chain (204) connecting the first gear (201) and the second gear (203).