CN217031226U

CN217031226U - Thermal power factory lime-ash slag discharge system

Info

Publication number: CN217031226U
Application number: CN202220196696.XU
Authority: CN
Inventors: 刘晓杰
Original assignee: Huaneng Weihai Power Generation Co Ltd
Current assignee: Huaneng Weihai Power Generation Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-07-22
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to the technical field of ash slag discharging, in particular to an ash slag discharging system of a thermal power plant, which is provided with an ash slag bin, wherein the lower end of the ash slag bin is provided with a discharging port, the discharging port is connected with a discharging valve through a discharging pipe, the lower end of the discharging valve is connected with a double-shaft humidifying stirrer through the discharging pipe, the discharging pipe is a short pipe with a round upper part and a round lower part, the discharging pipe is a square pipe, the upper end and the lower end of the square pipe are respectively provided with a flange plate, the front side surface of the square pipe is provided with a cleaning opening, the cleaning opening is provided with a cleaning door, the left end of the cleaning door is hinged with the square pipe through a hinge, the right end of the cleaning door is connected with the square pipe through a locking buckle, the lower end of the square pipe is provided with a blocking rod, a slag blocking alarm component is arranged above the middle part of the square pipe, a vibration anvil is arranged below the middle part of the square pipe and comprises a vibration head and a vibration column, the middle part of the vibration head is connected with the vibration column through the hole, the vibration column passes through the side surface of the square pipe and is connected with the square pipe, has the advantages of simple structure, convenient use, good slag discharging effect, high dredging efficiency and the like.

Description

Thermal power factory lime-ash slag discharge system

Technical Field

The utility model relates to the technical field of ash slag discharging, in particular to an ash slag discharging system of a thermal power plant, which has the advantages of simple structure, convenient use, good slag discharging effect and high dredging efficiency.

Background

As is known, the boiler deslagging system of the power generating unit of the domestic thermal power plant mostly adopts a dry deslagging process at present, the boiler slag is continuously conveyed to a slag bin through a steel belt slag conveyor, the slag bin can store certain capacity of slag, and the slag is periodically discharged through a slag discharging facility. The ash unloading facility consists of a discharging pipe, a discharging valve (a manual door and a pneumatic door), a discharging short joint, a humidifying stirrer and a control system. The process flow is as follows: ash residue bin → discharge pipe → discharge valve → discharge short section → humidifying agitator → loading and outward transportation.

Most ash discharging facilities of power plants have the problem of foreign matter inclusion in ash in different degrees during operation, and the foreign matter mainly comes from the boiler to boiler pipeline abrasionproof cover, heating surface mounting fixture and other equipment accessories etc. in the stove are given first place to, mostly are the metal material, because the long or manufacturing installation quality problem of operating time, drop into the stove bottom after a period, arrange to the ash storehouse through steel band sediment conveyer. In case the metallic foreign matter gets into the humidification mixer along with the lime-ash, the mixer blade that direct contact is rotating, especially pipeline abrasionproof cover is mostly alloy steel wear-resisting material, can let the humidification mixer in the short time because a large amount of blade damage stop work, causes serious faults such as main shaft bending or speed reducer damage even.

Because the sediment can't be effectively arranged because of the blade damage to the mixer before the trouble is stopped transport, along with equipment damage, still can cause whole unloading pipeline to block up the lime-ash simultaneously, can lead to unloading pneumatic door, manual door all can't close when serious, and the system can't keep apart. In addition, because the ash residue increases because of other reasons (furnace internal leakage or artifical water conservancy decoking etc.) water content, dry sediment has become wet sediment, and the wet sediment of caking also often can cause the blanking pipe to block up, and can't quick effectual dredge.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provides the ash residue discharging system of the thermal power plant, which has the advantages of simple structure, convenient use, good slag discharging effect and high dredging efficiency.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

a thermal power factory lime-ash slag discharging system is provided with a lime-ash bin, the lower end of the lime-ash bin is provided with a discharge port, the discharge port is connected with a discharge valve through a discharge pipe, the lower end of the discharge valve is connected with a double-shaft humidifying stirrer through the discharge pipe, the discharge pipe is a short pipe below a top circle, the thermal power factory lime-ash slag discharging system is characterized in that the discharge pipe is a square pipe, the upper end and the lower end of the square pipe are respectively provided with a flange plate, the front side surface of the square pipe is provided with a cleaning opening, a cleaning door is arranged on the cleaning opening, the left end of the cleaning door is hinged with the square pipe through a hinge, the right end of the cleaning door is connected with the square pipe through a locking buckle, the lower end of the square pipe is provided with a blocking rod, the blocking rod is uniformly distributed at the lower end opening of the square ring and fixedly connected with the inner wall of the square pipe, a slag blocking alarm component is arranged above the middle part of the square pipe, the coal blocking alarm component is used for realizing coal blocking alarm, a rapping, a hammering block is arranged below the middle part of the square pipe, the hammering block shakes and beats the head and shake the post including shaking, the head of shaking establish to the disc-shaped, the disc-shaped middle part of shaking the head with shake the post and be connected, shake the post connection shake the middle part of beating the head and with shake first coaxial line connection, the post of shaking pass square tub of side and pass the hole and be connected with square tub, shake the vibration of head realization square venturi tube through the hammering.

The cleaning door is provided with a glass observation window, and the blanking condition in the square tube is observed through the glass observation window.

The locking buckle is a locking bolt, the outer end of the locking bolt is provided with a rotating handle, the inner end of the locking bolt penetrates through a through hole in the cleaning door to be connected with a thread groove in the square pipe, and the cleaning door is tightly pressed on the square pipe through the rotating handle.

The cleaning door is provided with a door handle, and the cleaning door is opened through the door handle.

The slag blocking alarm assembly comprises a rotation-resisting switch, a controller and an alarm lamp, wherein a small impeller at the front end of the rotation-resisting switch extends into a square pipe, the rear end of the rotation-resisting switch is connected to the inner wall of the square pipe, the rotation-resisting switch is connected with the controller, the controller is connected with the alarm lamp and a discharge valve, ash blocks at the small impeller and sends a material blocking signal when the impeller cannot rotate due to increased resistance, the signal is transmitted to the controller, and the controller closes the discharge valve and opens the alarm lamp at the same time, so that the material blocking alarm function is realized.

A protective cover is arranged above a small blade driving rod of the rotation-resistant switch, the protective cover is arc-shaped, the rear end of the arc-shaped protective cover is fixed on the inner wall of the square tube, and the rotation-resistant switch is protected by the arc-shaped cover.

The intercepting rod is set to be the angle steel rod, the tip end of the angle steel rod faces upwards, and the flaring end of the angle steel faces downwards, so that large foreign matters can be intercepted under the condition that slag conveying is not influenced.

Due to the adoption of the structure, the utility model has the advantages of simple structure, convenient use, good slag discharging effect, high dredging efficiency and the like.

Drawings

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

FIG. 2 is a schematic view of the structure of a square tube in the present invention.

Fig. 3 is a diagram of the connection relationship between the rotation-resisting switch and the rapping anvil and the square tube in fig. 2.

FIG. 4 is a view showing the connection of the square pipe with the locking buckle and the cleaning door in FIG. 2.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in the attached drawing, the ash residue discharging system of the thermal power plant is provided with an ash chamber 1, the lower end of the ash chamber 1 is provided with a discharge port, the discharge port is connected with a discharge valve 3 through a discharge pipe 2, the lower end of the discharge valve 3 is connected with a double-shaft humidifying stirrer 5 through the discharge pipe, the discharge pipe 2 is a short pipe below an upper circle, the ash discharging system is characterized in that the discharge pipe is a square pipe 4, the upper end and the lower end of the square pipe 4 are respectively provided with a flange plate 20, the front side surface of the square pipe 4 is provided with a cleaning opening, a cleaning door 6 is arranged on the cleaning opening, the left end of the cleaning door 6 is hinged with the square pipe 4 through a hinge 7, the right end of the cleaning door is connected with the square pipe 4 through a locking buckle, the lower end of the square pipe 4 is provided with a blocking rod 8, the blocking rods 8 are uniformly distributed at the lower end opening of the square ring and fixedly connected with the inner wall of the square pipe 4, a residue blocking alarm component is arranged above the middle part of the square pipe 4, realize the warning of chute blockage through chute blockage warning subassembly, the middle part below of square pipe 4 be equipped with and shake anvil 9, shake and beat anvil 9 including shake beat first 10 and shake post 11, shake and beat first 10 and establish to the disc, the disc shakes the middle part of beating first 10 and is connected with shaking post 11, shake post 11 and connect the middle part of beating first 10 and with shake first 10 coaxial lines and be connected, shake post 11 and pass square 4 side of managing and pass the hole and be connected with square pipe 4, shake through the hammer and beat first 10 vibrations that realize other side's venturi tube 4.

Furthermore, a glass observation window 12 is arranged on the cleaning door 6, and the blanking condition inside the square pipe 4 is observed through the glass observation window 12.

Furthermore, the locking buckle is a locking bolt 13, the outer end of the locking bolt 13 is provided with a rotating handle 14, the inner end of the locking bolt 13 penetrates through the through hole in the cleaning door 6 to be connected with a thread groove 15 in the square pipe 4, and the cleaning door 6 is tightly pressed on the square pipe 4 through the rotating handle 14.

Furthermore, a door handle 16 is arranged on the cleaning door 6, and the cleaning door 6 is opened through the door handle 16.

Further, stifled sediment warning subassembly including hindering and revolve switch 17, controller, alarm lamp 19, the little leaflet wheel that hinders 17 front ends of revolving switch extend in square pipe 4, hinder and revolve the switch 17 rear end and connect on square pipe 4 inner wall, hinder and revolve switch 17 and be connected with the controller, the controller is connected with alarm lamp 19 and discharge valve 3, the lime-ash blocks up to little leaflet wheel department and sends the putty signal when increasing to the unable rotation of impeller, signal transmission gives the controller, the controller closes discharge valve 3 and opens alarm lamp 19 simultaneously, realizes putty alarming function.

Further, a protective cover 18 is arranged above a small impeller driving rod of the rotation-resistant switch 17, the protective cover 18 is arc-shaped, the rear end of the arc-shaped protective cover 18 is fixed on the inner wall of the square tube 4, and the rotation-resistant switch 17 is protected by the arc-shaped cover.

Furthermore, the intercepting rod 8 is set as an angle steel rod, the tip end of the angle steel rod faces upwards, and the flaring end of the angle steel faces downwards, so that larger foreign matters can be intercepted under the condition of not influencing slag conveying.

When the device is used, the discharge valve 3 is opened for discharging, when a slag blocking condition occurs, the small impeller in the rotation-blocking switch 17 is blocked, a signal is transmitted to the controller, the controller closes the discharge valve 3 and simultaneously opens the alarm lamp 19, at the moment, an operator observes the internal condition of the square tube 4 through the glass observation window 12, then the square tube 4 is vibrated through the hammering head 10, the blocked slag is cleared through vibration, and the blockage process is further completed. The angle steel rods are arranged at intervals of 70mm, normal discharging cannot be affected due to too narrow width setting, and the particle size of ash slag after boiler slag discharge is crushed by the slag crusher is smaller than 30mm under normal conditions.

Claims

1. A thermal power factory lime-ash slag-off system is provided with a lime-ash bin, the lower end of the lime-ash bin is provided with a discharge port, the discharge port is connected with a discharge valve through a discharge pipe, the lower end of the discharge valve is connected with a double-shaft humidifying agitator through the discharge pipe, the discharge pipe is a short pipe below a round top, the discharge pipe is a square pipe, the upper end and the lower end of the square pipe are respectively provided with a flange plate, the front side surface of the square pipe is provided with a cleaning opening, the cleaning opening is provided with a cleaning door, the left end of the cleaning door is hinged with the square pipe through a hinge, the right end of the cleaning door is connected with the square pipe through a locking buckle, the lower end of the square pipe is provided with intercepting rods, the intercepting rods are uniformly distributed at the lower end opening of the square ring and fixedly connected with the inner wall of the square pipe, a slag blocking alarm component is arranged above the middle part of the square pipe, the coal blocking alarm component is used for realizing the alarm of coal blocking, a rapping anvil is arranged below the middle part of the square pipe, rapping the hammering block and beating the head and rapping the post including shaking, the head of shaking establish to the disc, the disc shakes the middle part of beating the head and shakes the post and be connected, shake the post connection shake beat the head the middle part and with shake first coaxial line and be connected, the post of shaking pass square pipe side and pass the hole and be connected with square pipe, shake the vibration of head realization other side's venturi tube through the hammering.

2. The ash and slag discharging system of a thermal power plant as claimed in claim 1, wherein the cleaning door is provided with a glass observation window through which the discharged material inside the square tube is observed.

3. The ash slag discharging system of a thermal power plant as claimed in claim 1, wherein the locking fastener is a locking bolt, the outer end of the locking bolt is provided with a rotating handle, the inner end of the locking bolt passes through the through hole of the cleaning door to be connected with the thread groove of the square pipe, and the cleaning door is pressed against the square pipe by rotating the handle.

4. The ash slag discharging system of a thermal power plant as claimed in claim 1, wherein said cleaning door is provided with a door handle, and said door handle is used to open said cleaning door.

5. The ash slag discharging system of a thermal power plant as claimed in claim 1, wherein the ash slag blocking alarm assembly comprises a rotation blocking switch, a controller and an alarm lamp, the small blade wheel at the front end of the rotation blocking switch extends into the square pipe, the rear end of the rotation blocking switch is connected to the inner wall of the square pipe, the rotation blocking switch is connected with the controller, the controller is connected with the alarm lamp and the discharge valve, the ash slag blocks at the small blade wheel and sends a material blocking signal when the resistance increases to the situation that the impeller cannot rotate, the signal is transmitted to the controller, and the controller closes the discharge valve and opens the alarm lamp.

6. The ash and slag discharging system of a thermal power plant according to claim 5, wherein a shield is provided above the small impeller driving rod of the rotation-blocking switch, the shield is arc-shaped, the rear end of the arc-shaped shield is fixed on the inner wall of the square pipe, and the rotation-blocking switch is protected by the arc-shaped shield.

7. The ash and slag discharging system of a thermal power plant as claimed in claim 1, wherein the intercepting bar is a angle steel bar, the tip of the angle steel bar faces upward, the flaring end of the angle steel bar faces downward, and the intercepting of large foreign matters can be realized without affecting slag transportation.