CN106812952B

CN106812952B - Waste incineration power plant flue gas bin export piston strutting arrangement

Info

Publication number: CN106812952B
Application number: CN201710129461.2A
Authority: CN
Inventors: 马进; 钟日钢; 陈思杨; 焦堂财
Original assignee: Shenzhen Energy Environmental Engineering Co Ltd
Current assignee: Shenzhen Energy Environmental Engineering Co Ltd
Priority date: 2017-03-06
Filing date: 2017-03-06
Publication date: 2022-10-25
Anticipated expiration: 2037-03-06
Also published as: CN106812952A

Abstract

At present, the waste incineration power plant adopts the sack cleaner to carry out the flue gas dust removal, will lead to piston cylinder case tenesmus when the ageing damaged, the solenoid valve of compressed air pipe circumstances such as damage appear, makes the bin exit door accident close, causes the flue gas can't pass through the sack cleaner, causes serious influence to the safety and stability operation of whole power plant. The invention provides a waste incineration power plant flue gas bin outlet piston supporting device, wherein a tubular supporting sleeve seat is arranged on a piston rod of a piston, the supporting sleeve seat can be opened or closed, the supporting sleeve seat is sleeved on the piston rod and is positioned between an upper top plate of a flue gas bin and a shaft shoulder of the piston rod after being opened, the supporting sleeve seat upwards supports the piston rod through the shaft shoulder to prevent the piston rod from falling, and the purpose is to prevent a movable core rod of the piston from falling down to lead the flue gas outlet to be accidentally closed under the conditions that a compressed air main pipe leaks air, an electromagnetic valve fails, a compressed air pipe at the tail part of a lifting valve head of an air cylinder is damaged, and the like, so that the normal operation of waste incineration is influenced.

Description

Waste incineration power plant flue gas bin export piston strutting arrangement

Technical Field

The invention relates to a waste incineration flue gas treatment device, in particular to a waste incineration power plant flue gas bin outlet piston supporting device.

Background

At present, a bag-type dust remover is adopted in a waste incineration power plant for removing dust from smoke, and the smoke generated during waste incineration enters a smoke bin from a smoke inlet after passing through the bag-type dust remover and is then discharged from a smoke bin outlet. However, because the outlet area temperature is higher when the bag-type dust collector operates, the compressed air pipe of the cylinder piston is easy to age and damage when working at a high temperature for a long time, and in addition, the air pressure of the cylinder piston is lower due to the damage of the electromagnetic valve or the leakage of the compressed air main pipe and other reasons, the valve core cannot be kept in a lifting state, the outlet valve of the chamber can be closed due to the falling of the valve core self weight and other reasons, smoke cannot pass through the bag-type dust collector, even causes the tripping of main fuel (MFT for short in English) in serious cases, and seriously affects the safe and stable operation of the whole power plant.

Disclosure of Invention

Aiming at the defects, the invention provides a flue gas chamber outlet piston supporting device of a waste incineration power plant, wherein a tubular supporting sleeve seat is arranged on a piston rod of a piston, the supporting sleeve seat can be opened or included, the supporting sleeve seat is sleeved on the piston rod and is positioned between an upper top plate of a flue gas chamber and a shaft shoulder of the piston rod after being opened, the piston rod is upwards supported by the supporting sleeve seat through the shaft shoulder to prevent the piston rod from falling down, and the invention aims to prevent a movable core rod of the piston from falling down to lead the flue gas outlet to be accidentally closed under the conditions of air leakage of a compressed air main pipe, failure of an electromagnetic valve, damage of a compressed air pipe at the tail part of a lifting valve head of an air cylinder and the like, thereby influencing the normal operation of waste incineration.

The technical scheme includes that the smoke chamber outlet piston supporting device for the waste incineration power plant comprises a smoke chamber and a piston, wherein the piston is arranged at the top of the smoke chamber, the piston rod penetrates through an upper top plate of the smoke chamber, a smoke outlet is formed in a lower bottom plate of the smoke chamber, an outlet cover plate is arranged at the smoke outlet and is driven by the piston rod to open or close the smoke outlet.

According to the preferable scheme, the support sleeve seat is provided with a hinge, and the first half pipe and the second half pipe are connected through the hinge.

In a preferred embodiment of the present invention, a buffer seat is further disposed on an upper side of the support sleeve seat.

In a preferred embodiment of the present invention, a support seat is further provided at a lower side of the support sleeve seat.

In a preferred embodiment of the present invention, the support sleeve is further provided with a locking member, and the support sleeve is closed and then fastened by the locking member.

In a preferable aspect of the present invention, the support shoe is further provided with a strap, and the support shoe is closed and then tightened and fixed by the strap.

The invention has the beneficial effects that: the invention provides a piston supporting device for a flue gas chamber outlet of a waste incineration power plant, wherein a piston rod of a piston is provided with a tubular supporting sleeve seat, so that the phenomenon that the flue gas outlet is accidentally closed due to the fact that the piston rod of a cylinder piston drops due to the reduction of air pressure can be effectively prevented, the flue gas outlet can be always in a normally open state in the operation process, and the safe and stable operation of a power plant is ensured.

Description of the drawings:

fig. 1-3 are schematic views of installation structures in the prior art, wherein fig. 2 and 3 are schematic views of internal structures, fig. 2 is a schematic view of a smoke outlet when opened, and fig. 3 is a schematic view of a smoke outlet when accidentally closed due to a reduction in air pressure of a piston of a cylinder.

Fig. 4-8 are schematic structural views of a first embodiment of the present invention. Fig. 4 is a schematic view of an installation structure, fig. 5 is a schematic view of an opening structure when the support sleeve seat is installed, and fig. 6, 7 and 8 are enlarged schematic views of the support sleeve seat structure. Fig. 7 and 8 are schematic structural views of the support socket when the support socket is closed, fig. 7 is a schematic structural view of fig. 6 after the support socket is rotated by 180 degrees, and fig. 8 is a schematic structural view of the support socket when the support socket is opened.

Fig. 9 is an enlarged schematic structural view of a second embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1, a piston rod, 1.1 an outlet cover plate and 1.2 shaft shoulders;

2. the flue gas device comprises a flue gas chamber, a 2.1 flue gas inlet, a 2.2 flue gas outlet, a 2.3A flue gas chamber upper top plate, a 2.3B flue gas chamber lower bottom plate and a 2.4 flue gas chamber cavity;

3 sleeve seats, 3A left sleeve seat, 3B right sleeve seat, 3.1 locking components, 3.2 hinges (hinges), 3.3 buffer seats, 3.3A left buffer seat, 3.3B right buffer seat, 3.4 bearing seats, 3.4A left bearing seat, 3.4B right bearing seat and 3.5 sleeve holes;

4, a binding belt.

Detailed Description

Fig. 1-3 are schematic views of installation structures in the prior art, wherein fig. 2 and 3 are schematic views of internal structures, fig. 2 is a schematic view of a smoke outlet when opened, and fig. 3 is a schematic view of a smoke outlet when accidentally closed due to a reduction in air pressure of a piston of a cylinder. It can be seen from the figure that the waste incineration power plant adopts the bag-type dust remover to remove the flue gas, and the flue gas during waste incineration enters the flue gas bin 2 from the flue gas inlet 2.1 after passing through the bag-type dust remover and then is discharged from the flue gas bin outlet 2.2. In the prior art, the outlet of the flue gas bin of the waste incineration power plant is controlled to be opened or closed by a piston, the structure of the flue gas bin comprises a flue gas bin 2 and a piston, the piston is arranged at the top of the flue gas bin 2, a piston rod 1 penetrates through an upper top plate 2.2A of the flue gas bin, a flue gas outlet 2.2 is arranged on a lower bottom plate 2.3B of the flue gas bin 2, an outlet cover plate 1.1 is arranged at the flue gas outlet 2.2, the outlet cover plate 1.1 is driven by the piston rod 1, and the flue gas outlet 2.2 is opened or closed when the piston rod 1 moves up and down.

Fig. 2 shows that, under normal conditions, the piston rod 1 is kept in a lifting state, and the flue gas outlet 2.1 is always kept in an opening state, so that flue gas can enter the flue gas inlet 2.1 through the bag-type dust remover and then is discharged from the flue gas outlet 2.2, and the smooth proceeding of waste incineration is ensured.

The problem is that, as shown in fig. 3, in daily operation, because the temperature of the outlet valve body area is high when the bag-type dust collector operates, the compressed air pipe used at the tail of the lifting valve head of the air cylinder is made of plastic, the compressed air pipe is easy to age and damage when operating at high temperature for a long time, and in addition, the air pressure in the air cylinder is low due to the damage of the electromagnetic valve or the leakage of the compressed air main pipe, the piston rod 1 cannot be kept in a lifting state, the smoke outlet 2.1 is closed due to the falling of the valve core and the piston rod due to the self weight, the smoke cannot pass through the bag-type dust collector, and in severe cases, even the main fuel trip (MFT for short, which is the core content of boiler safety protection, after the boiler MFT acts, the primary air system, the secondary air system, the feeding grate is completely stopped, and the steam turbine trips), and the safe and stable operation of the whole power plant is seriously influenced.

Fig. 4-8 are schematic structural views of a first embodiment of the present invention. Fig. 4 is a schematic view of an installation structure, and fig. 6, 7 and 8 are enlarged schematic views of a support sleeve seat structure. Fig. 7 and 8 are schematic structural views of the support socket when the support socket is closed, fig. 7 is a schematic structural view of fig. 6 after the support socket is rotated by 180 degrees, and fig. 8 is a schematic structural view of the support socket when the support socket is opened.

In the figure, the piston supporting device for the smoke chamber outlet of the waste incineration power plant comprises a smoke chamber 2 and a piston, wherein the piston is arranged at the top of the smoke chamber 2, a piston rod 1 penetrates through an upper top plate 2.2A of the smoke chamber, a smoke outlet 2.2 is arranged on a lower bottom plate 2.3B of the smoke chamber 2, an outlet cover plate 1.1 is arranged at the smoke outlet 2.2, the outlet cover plate 1.1 is driven by the piston rod 1, and the smoke outlet 2.2 is opened or closed when the piston rod 1 moves up and down. Different from the prior art, in the embodiment, the tubular supporting sleeve seat 3 is arranged on the piston rod 1 of the piston, the supporting sleeve seat 3 is formed by enclosing a first half pipe 3A and a second half pipe 3B, a pipe hole 3.5 is formed after the first half pipe 3A and the second half pipe 3B are enclosed, the supporting sleeve seat 3 can be opened or enclosed, the first half pipe 3A and the second half pipe 3B are enclosed to form a complete supporting pipe 3, the supporting sleeve seat 3 is sleeved on the piston rod 1 and located between the top plate 2.3A of the smoke chamber and the shaft shoulder 1.2 of the piston rod 1 after being opened, the supporting sleeve seat 3 plays a supporting role for the piston rod 1, and the supporting sleeve seat 3 upwards supports the piston rod 1 through the shaft shoulder 1.2 to prevent the piston rod from falling down.

Fig. 7 shows that, in this example, the support sleeve seat 3 is further provided with a hinge 3.2, and the first half pipe 3A and the second half pipe 3B are connected through the hinge 3.2 to realize opening or closing.

Fig. 5, 6 and 7 show that in this embodiment, a buffer seat 3.3 is further disposed on the upper side of the support sleeve seat 3, and the buffer seat is surrounded by a left buffer seat 3.3A and a right buffer seat 3.3B. The buffer seat 3.3 can be made of colloid resilience materials, and the buffer seat 3.3 plays a role in buffering when in contact with the shaft shoulder 1.2. The invention prompts that the buffer seat should be made of heat-resistant materials.

Fig. 5, 6 and 7 show that in this example, a support base 3.4 is further provided at the lower side of the support sleeve base 3, and the support base 3.4 is surrounded by a left support base 3.4A and a right support base 3.4B. The supporting seat 3.4 increases the stress area between the supporting sleeve seat 3 and the upper top plate 2.3A of the flue gas chamber.

Fig. 5, 6 and 7 show that in this example, the support sleeve 3 is further provided with a locking member 3.1, and the support sleeve 3 is closed and then fastened by the locking member 3.1.

The figure shows that the smoke outlet 2.2 is always in a forced opening state due to the arrangement of the supporting sleeve seat 3 on the piston rod. Even if the compressed air pipe works at high temperature for a long time, the air leakage is easy to age and damage, the problem that the smoke outlet is accidentally closed due to the falling of the piston rod can be effectively avoided, and the operation safety is ensured. In daily operation, the supporting sleeve seat 3 is buckled and fixed by the locking component 3.1 after being closed, so that the piston rod 1 is prevented from dropping. When the machine is stopped for maintenance and the smoke outlet needs to be closed, the locking component 3.1 of the support sleeve seat 3 can be opened, and the support sleeve seat 3 is detached, so that the equipment can be maintained.

Fig. 9 is an enlarged schematic structural view of a second embodiment of the present invention. In the figure, it is shown that, unlike the first embodiment of the invention, the strap 4 replaces the locking member 3.1 in this case. In daily operation, the supporting sleeve seat 3 is wrapped and then is clamped and fixed by the bridle 4. When the machine is stopped for maintenance and the smoke outlet needs to be closed, the strap 4 can be cut off and then the support sleeve seat 3 is detached, so that the equipment can be maintained. The invention suggests that the band should be made of a heat resistant material.

Claims

1. The utility model provides a msw incineration power plant flue gas bin export piston strutting arrangement, includes flue gas bin and piston, the piston sets up flue gas bin top, the piston rod of piston passes from the roof on the flue gas bin the lower floor of flue gas bin sets up the exhanst gas outlet sets up the export apron, the export apron realizes opening or closing of exhanst gas outlet by piston rod drive, characterized by set up tubulose supporting sleeve seat on the piston rod of piston, the supporting sleeve seat is formed by first half pipe and the half pipe inclusion of second, the supporting sleeve seat can be opened or the inclusion, cup joint after the supporting sleeve seat is opened and be located between flue gas bin roof and the piston rod shaft shoulder on the piston rod, then the inclusion is fixed, constitute a complete stay tube behind first half pipe, the half pipe inclusion, the supporting sleeve seat upwards holds up the piston rod through the shaft shoulder and prevents the piston rod falls down.

2. The waste incineration power plant flue gas bin outlet piston supporting device as claimed in claim 1, wherein a hinge is arranged on the supporting sleeve seat, and the first half pipe and the second half pipe are connected through the hinge.

3. The device for supporting the piston at the outlet of the flue gas bin of the waste incineration power plant as claimed in claim 1, wherein a buffer seat is further arranged on the upper side of the support sleeve seat.

4. The device as claimed in claim 1, wherein a supporting seat is further provided at a lower side of the supporting sleeve seat.

5. The waste incineration power plant flue gas bin outlet piston supporting device as claimed in claim 1, wherein a locking member is further arranged on the supporting sleeve seat, and the supporting sleeve seat is buckled and fixed by the locking member after being closed.

6. The device as claimed in claim 1, wherein the support sleeve seat is further provided with a belt, and the support sleeve seat is clamped and fixed by the belt after being wrapped.