CN212227095U

CN212227095U - Explosion vent for thermal power plant

Info

Publication number: CN212227095U
Application number: CN202020747709.9U
Authority: CN
Inventors: 邓克海
Original assignee: Yancheng Baoze Power Petrochemical Machinery Manufacturing Co ltd
Current assignee: Yancheng Baoze Power Petrochemical Machinery Manufacturing Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-25
Anticipated expiration: 2030-05-08

Abstract

The utility model relates to the technical field of boilers, and an explosion vent is used in thermal power plant is disclosed, including the tobacco pipe body, the top movable mounting of tobacco pipe body has first sealing washer, the top of tobacco pipe body and the top movable mounting who is located first sealing washer have the base, the base passes through connecting bolt and tobacco pipe body swing joint, the top movable mounting of base has the second sealing washer, the positive fixed mounting of base has the fixing base, the left side fixed mounting of fixing base has the core bar that runs through and extend to the fixing base right side, the outer wall of core bar has cup jointed the slide cartridge that quantity is two. This explosion vent for thermal power plant releases elastic potential energy and drives two slide cartridges through reset spring and keeps away from each other, and first slope spigot on the slide cartridge and the second inclined plane interact on the rotary drum and drive the rotary drum rotatory, and the rotary drum drives the apron through the connecting block and resets and closed with the base, reaches simple and convenient automatic re-setting's effect.

Description

Explosion vent for thermal power plant

Technical Field

The utility model relates to a boiler technical field specifically is an explosion vent is used in thermal power plant.

Background

Thermal power plants are classified into coal-fired thermal power plants, oil-fired thermal power plants, gas thermal power plants and the like according to the types of fuels, and also classified into power plants and thermal power plants according to the functions, and the power plants only produce and supply electric energy to users; the thermal power plant can supply heat energy besides producing and supplying electric energy to users, and can be divided into regional thermal power plants, local thermal power plants and mobile train power stations according to service scale, the installed capacity of the regional power plant is large, the regional power plant is generally built near a fuel base such as a large coal mine, also called as a pithead power plant, the electric energy is supplied to the users through a long-distance power transmission line, because the high-temperature flue gas entering the waste heat boiler during fuel combustion often contains a certain amount of combustible components such as hydrocarbon, carbon monoxide and tiny carbon granules, when the combustible mixtures flow through a flue which is not smooth in ventilation and is relatively closed, the deflagration phenomenon is very easy to occur once encountering a fire source, especially when the combustible mixtures are gathered at a certain position of the flue, the deflagration is easy to occur when encountering the fire source, the pressure in the waste heat boiler or a local area in the flue is suddenly increased, so that accidents are caused, and therefore, explosion doors are necessary to be, when deflagration occurs, the explosion-proof door is automatically opened to release pressure so as to reduce the impact damage of deflagration to the waste heat boiler and the flue and ensure the safe operation of the waste heat boiler.

Traditional explosion vent does not generally have the automatic re-setting function to staff's the amount of labour has been increased, because under the unstable condition of the inside atmospheric pressure of flue, and cause the condition of incident easily to take place through artifical the resetting, partial explosion vent though can reset, but explosion vent rotation amplitude is big and lead to the explosion vent to damage easily and cause the condition emergence that manufacturing cost is high with stop device striking, so propose an explosion vent for thermal power plant and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an explosion vent is used in thermal power plant, possess advantages such as security performance height, solved traditional explosion vent and generally not have the automatic re-setting function to staff's the amount of labour has been increased, because under the unstable condition of the inside atmospheric pressure of flue, and through the condition emergence that manual reset caused the incident easily, partial explosion vent though can reset, but explosion vent rotation range is big and lead to the explosion vent to damage easily and cause the problem that the condition that manufacturing cost is high takes place with stop device striking.

(II) technical scheme

For the purpose that realizes above-mentioned security performance is high, the utility model provides a following technical scheme: an explosion vent for a thermal power plant comprises a smoke tube body, wherein a first sealing ring is movably mounted at the top of the smoke tube body, a base is movably mounted at the top of the smoke tube body and positioned above the first sealing ring, the base is movably connected with the smoke tube body through a connecting bolt, a second sealing ring is movably mounted at the top of the base, a fixed seat is fixedly mounted at the front of the base, a core rod penetrating through and extending to the right side of the fixed seat is fixedly mounted at the left side of the fixed seat, two sliding cylinders are sleeved on the outer wall of the core rod, limiting blocks corresponding to the sliding cylinders are fixedly mounted at the front and the back of the core rod, opposite sides of the sliding cylinders are fixedly connected through a return spring, rotary cylinders corresponding to the sliding cylinders are movably mounted at the opposite sides of the outer wall of the core rod and positioned on the opposite sides of the sliding cylinders, and a connecting block is, the back fixed mounting of connecting block has the apron that corresponds with the base.

Preferably, the top of base and tobacco pipe body all seted up the mounting groove that corresponds with connecting bolt, connecting bolt's quantity is twelve, twelve connecting bolt is circular array distribution on the base.

Preferably, the first sealing ring and the second sealing ring are annular concave-convex rubber rings, and the inner diameter of the first sealing ring is larger than that of the second sealing ring.

Preferably, the top of tobacco pipe body and the bottom of base all set up the first ring channel that corresponds with first sealing washer, the top of base and the bottom of apron all set up the second ring channel that corresponds with the second sealing washer.

Preferably, a first inclined sliding surface is arranged on the reverse side of the sliding cylinder, and a second inclined sliding surface meshed with the first inclined sliding surface is arranged on the opposite side of the rotating cylinder.

Preferably, the inner wall of the sliding cylinder is provided with a limiting groove corresponding to the limiting block, and the two sliding cylinders and the two rotating cylinders are symmetrically distributed on the outer wall of the core rod.

(III) advantageous effects

Compared with the prior art, the utility model provides an explosion vent is used in thermal power plant possesses following beneficial effect:

the explosion door for the thermal power plant achieves the effect of simple and convenient multiple sealing by primarily sealing the smoke tube body and the base through the first sealing ring and secondarily sealing the base and the cover plate through the second sealing ring, thereby avoiding the occurrence of the situation that the explosion door leaks air due to poor sealing and causes harmful gas and dust in high-temperature smoke to enter the atmosphere to pollute the environment and also avoiding the situation that the operation efficiency of equipment is reduced due to the leakage of a flue, when the internal air pressure of the smoke tube body reaches a certain value, the internal air pressure of the smoke tube body drives the cover plate and the connecting block to rotate around the core rod and causes the internal part of the smoke tube body to be communicated with the outside, thereby achieving the effect of simple and convenient pressure relief, meanwhile, the cover plate drives the rotary drum to rotate through the connecting block in the rotating process, the second inclined sliding surface on the rotary drum interacts with the first inclined sliding surface on the sliding drum and drives the two sliding drums to approach each other, sliding barrel compression reset spring makes reset spring produce elastic potential energy, under the condition that the inside atmospheric pressure of tobacco pipe body reduces gradually, reset spring release elastic potential energy and drive two sliding barrels and keep away from each other, first slope spigot on the sliding barrel and the second inclined plane interact on the rotary drum and drive the rotary drum rotatory, the rotary drum passes through the connecting block and drives the apron and restore to the throne and be closed with the base, reach simple and convenient automatic re-setting's effect, thereby avoid causing the condition emergence of incident through artifical the reseing under the unstable condition of the inside atmospheric pressure of flue, the security performance of this explosion vent has further been improved, make this explosion vent facilitate promotion.

Drawings

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

FIG. 2 is a sectional view of the structure of the present invention;

fig. 3 is an enlarged view of a position a in the structure diagram 1 of the present invention.

In the figure: the smoke tube comprises a smoke tube body 1, a first sealing ring 2, a base 3, a connecting bolt 4, a second sealing ring 5, a fixed seat 6, a core rod 7, a sliding cylinder 8, a limiting block 9, a return spring 10, a rotating cylinder 11, a connecting block 12 and a cover plate 13.

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. 1-3, an explosion vent for thermal power plants comprises a smoke tube body 1, a first seal ring 2 is movably mounted at the top of the smoke tube body 1, a base 3 is movably mounted at the top of the smoke tube body 1 and above the first seal ring 2, the base 3 is movably connected with the smoke tube body 1 through a connecting bolt 4, mounting grooves corresponding to the connecting bolt 4 are respectively formed at the top of the base 3 and the top of the smoke tube body 1, the number of the connecting bolts 4 is twelve, the twelve connecting bolts 4 are distributed on the base 3 in a circular array, a second seal ring 5 is movably mounted at the top of the base 3, the first seal ring 2 and the second seal ring 5 are annular concave-convex rubber rings, the inner diameter of the first seal ring 2 is larger than the inner diameter of the second seal ring 5, a fixed seat 6 is fixedly mounted at the front of the base 3, a core rod 7 penetrating through and extending to the right side of the fixed seat 6 is fixedly mounted at, the outer wall of the core bar 7 is sleeved with two sliding cylinders 8, the front and the back of the core bar 7 are fixedly provided with limiting blocks 9 corresponding to the sliding cylinders 8, the opposite sides of the sliding cylinders 8 are fixedly connected through a return spring 10, the outer wall of the core bar 7 and the opposite sides of the sliding cylinders 8 are movably provided with rotary cylinders 11 corresponding to the sliding cylinders 8, the opposite sides of the sliding cylinders 8 are provided with first inclined sliding surfaces, the opposite sides of the rotary cylinders 11 are provided with second inclined sliding surfaces engaged with the first inclined sliding surfaces, the inner wall of the sliding cylinders 8 is provided with limiting grooves corresponding to the limiting blocks 9, the two sliding cylinders 8 and the rotary cylinders 11 are symmetrically distributed on the outer wall of the core bar 7, the top of the rotary cylinder 11 is fixedly provided with a connecting block 12, the back of the connecting block 12 is fixedly provided with a cover plate 13 corresponding to the base 3, the top of the smoke tube body 1 and the bottom of the base 3 are provided with first annular grooves corresponding to the first sealing rings, the top of the base 3 and the bottom of the cover plate 13 are both provided with a second annular groove corresponding to the second sealing ring 5, the smoke tube body 1 and the base 3 are primarily sealed by the first sealing ring 2, and the base 3 and the cover plate 13 are secondarily sealed by the second sealing ring 5, so that the simple and convenient multiple sealing effect is achieved, thereby avoiding the occurrence of the situation that the explosion door leaks air due to poor sealing and causes harmful gas and dust in high-temperature smoke to enter the atmosphere to pollute the environment, and simultaneously avoiding the situation that the operation efficiency of the equipment is reduced due to the leakage of a flue, when the internal air pressure of the smoke tube body 1 reaches a certain value, the internal air pressure of the smoke tube body 1 drives the cover plate 13 and the connecting block 12 to rotate around the core rod 7, and the internal of the smoke tube body 1 is communicated with the outside, so that the simple and convenient pressure relief effect is achieved, meanwhile, the cover plate 13 drives the rotary drum 11 to rotate through the, the second slope slip surface on the rotary drum 11 interacts with the first slope slip surface on the sliding barrel 8 and drives two sliding barrels 8 to be close to each other, the sliding barrel 8 compresses the reset spring 10 and enables the reset spring 10 to generate elastic potential energy, under the condition that the air pressure in the smoke tube body 1 is gradually reduced, the reset spring 10 releases the elastic potential energy and drives the two sliding barrels 8 to be away from each other, the first slope slip surface on the sliding barrel 8 interacts with the second slope surface on the rotary drum 11 and drives the rotary drum 11 to rotate, the rotary drum 11 drives the cover plate 13 to reset through the connecting block 12 and is closed with the base 3, the effect of simple and convenient automatic resetting is achieved, the condition that safety accidents are caused by manual resetting under the condition that the air pressure in the smoke channel is unstable is avoided, the safety performance of the explosion-proof door is further improved, and the explosion-proof door is convenient to popularize.

In conclusion, the explosion vent for the thermal power plant primarily seals the smoke tube body 1 and the base 3 through the first sealing ring 2, secondarily seals the base 3 and the cover plate 13 through the second sealing ring 5 to achieve the effect of simple and convenient multiple sealing, thereby avoiding the occurrence of the situation that the explosion vent leaks due to poor sealing and causes harmful gas and dust in high-temperature smoke to enter the atmosphere to pollute the environment, and simultaneously avoiding the situation that the operation efficiency of equipment is reduced due to the leakage of a flue, when the internal air pressure of the smoke tube body 1 reaches a certain value, the internal air pressure of the smoke tube body 1 drives the cover plate 13 and the connecting block 12 to rotate around the core rod 7, the internal part of the smoke tube body 1 is communicated with the outside, so that the effect of simple and convenient pressure relief is achieved, meanwhile, the cover plate 13 drives the rotary drum 11 to rotate through the connecting block 12 in the rotation process, the second inclined sliding surface on the rotary drum 11 interacts with the first inclined sliding surface on the sliding drum 8 and drives the two sliding drums 8 to lean against each other Nearly, the sliding cylinder 8 compresses the reset spring 10 and makes the reset spring 10 generate elastic potential energy, under the condition that the air pressure in the smoke tube body 1 is gradually reduced, the reset spring 10 releases the elastic potential energy and drives the two sliding cylinders 8 to be away from each other, a first inclined sliding surface on the sliding cylinder 8 interacts with a second inclined surface on the rotating cylinder 11 and drives the rotating cylinder 11 to rotate, the rotating cylinder 11 drives the cover plate 13 to reset and is closed with the base 3 through the connecting block 12, the simple and convenient automatic resetting effect is achieved, the condition that safety accidents are caused by manual resetting under the condition that the air pressure in the smoke channel is unstable is avoided, the safety performance of the explosion-proof door is further improved, the explosion-proof door is convenient to popularize, the problem that the traditional explosion-proof door does not have an automatic resetting function generally is solved, the labor capacity of workers is increased, under the condition that the air pressure in the smoke, and the condition that the safety accident is easily caused by manual reset is generated, and although part of the explosion-proof door can be reset, the explosion-proof door has large rotation amplitude and is easy to damage due to the collision with a limiting device, so that the production cost is high.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 an explosion vent for thermal power plant, includes tobacco pipe body (1), its characterized in that: a first sealing ring (2) is movably mounted at the top of the smoke tube body (1), a base (3) is movably mounted at the top of the smoke tube body (1) and positioned above the first sealing ring (2), the base (3) is movably connected with the smoke tube body (1) through a connecting bolt (4), a second sealing ring (5) is movably mounted at the top of the base (3), a fixed seat (6) is fixedly mounted at the front of the base (3), a core rod (7) which penetrates through and extends to the right side of the fixed seat (6) is fixedly mounted at the left side of the fixed seat (6), two sliding cylinders (8) are sleeved on the outer wall of the core rod (7), limiting blocks (9) corresponding to the sliding cylinders (8) are fixedly mounted at the front and the back of the core rod (7), and the opposite sides of the sliding cylinders (8) are fixedly connected through a reset spring (10), the outer wall of the core rod (7) and the back side of the sliding cylinder (8) are movably provided with a rotating cylinder (11) corresponding to the sliding cylinder (8), the top of the rotating cylinder (11) is fixedly provided with a connecting block (12), and the back of the connecting block (12) is fixedly provided with a cover plate (13) corresponding to the base (3).

2. The thermal power plant explosion vent as defined in claim 1, wherein: the mounting grooves corresponding to the connecting bolts (4) are formed in the tops of the base (3) and the smoke tube body (1), the number of the connecting bolts (4) is twelve, and the twelve connecting bolts (4) are distributed on the base (3) in a circular array mode.

3. The thermal power plant explosion vent as defined in claim 1, wherein: the first sealing ring (2) and the second sealing ring (5) are annular concave-convex rubber rings, and the inner diameter of the first sealing ring (2) is larger than that of the second sealing ring (5).

4. The thermal power plant explosion vent as defined in claim 1, wherein: the top of tobacco pipe body (1) and the bottom of base (3) all set up the first ring channel that corresponds with first sealing washer (2), the second ring channel that corresponds with second sealing washer (5) is all seted up to the top of base (3) and the bottom of apron (13).

5. The thermal power plant explosion vent as defined in claim 1, wherein: the reverse side of the sliding cylinder (8) is provided with a first inclined sliding surface, and the opposite side of the rotating cylinder (11) is provided with a second inclined sliding surface meshed with the first inclined sliding surface.

6. The thermal power plant explosion vent as defined in claim 1, wherein: the inner wall of the sliding cylinder (8) is provided with a limiting groove corresponding to the limiting block (9), and the two sliding cylinders (8) and the rotary cylinder (11) are symmetrically distributed on the outer wall of the core rod (7).