CN214404739U

CN214404739U - A trip valve for flammable nonstandard gas combustion ware

Info

Publication number: CN214404739U
Application number: CN202120318828.7U
Authority: CN
Inventors: 方戴立; 仲伟沧; 吴瑞和; 方士兴
Original assignee: Jiangyin Deer Thermal Energy Machinery Co ltd
Current assignee: Jiangyin Deer Thermal Energy Machinery Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-10-15
Anticipated expiration: 2031-02-04

Abstract

The utility model provides a trip valve for flammable non-mark gas combustion ware, its simple structure is reliable, can guarantee various non-mark gas combustion device's performance, and is both safe and reliable, including the trip valve casing, the both ends of trip valve casing are provided with medium entry and medium export respectively, be provided with the seal receptacle in the trip valve casing on, be located the top of seal receptacle is provided with actuating mechanism, actuating mechanism's lower extreme stretches into be connected with the sealed lid subassembly in the trip valve casing, actuating mechanism can drive the sealed lid subassembly removes, the sealed lid subassembly can with the seal receptacle cooperation is sealed, will two cavitys are blocked into to the inner chamber of trip valve casing.

Description

A trip valve for flammable nonstandard gas combustion ware

Technical Field

The utility model relates to a combustor technical field, concretely relates to trip valve for flammable nonstandard gas burner.

Background

In order to respond to the national calls for cost saving, consumption reduction and circular economy, waste heat utilization is carried out on various industrial combustible low-heat-value waste gases, and the emission of the waste gases reaches the environmental protection standard, in particular to the development and development of various combustible non-standard gas burners such as coke oven crude gas, blast furnace gas, coal bed and petrochemical gas, producer gas, converter gas, methane, hydrogen, purge gas, calcium carbide furnace tail gas, mixed gas and the like, the waste heat utilization system is widely used for various industrial boilers, power station boilers, organic heat carrier furnaces, heating furnaces, annealing furnaces, kilns, specially designed industrial furnaces, lithium bromide direct-fired machines and other thermal equipment in various industries, and good economic benefits and social benefits are obtained for wide use units.

The domestic large-caliber valve which can be suitable for the medium function is limited by the valve shell, because the common middle-low pressure valve shell is a casting part, the valve body with the large caliber needs a large mould and casting equipment, the market demand is small, the thickness needed by the large casting needs to be increased, the qualification rate is low, the casting process can also cause environmental pollution, the production cost is very high, a multi-way valve bank parallel connection mode has to be adopted, the valve bank can form a complex flow resistance to be increased, the occupied space is large, and the safety and reliability of a control system are greatly reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a trip valve for flammable nonstandard gas burner, its simple structure is reliable, can guarantee various nonstandard gas burner's performance, and is not only safe but also reliable.

The technical scheme is as follows: the utility model provides a trip valve for flammable nonstandard gas combustion ware, includes the shut-off valve casing, the both ends of shut-off valve casing are provided with medium entry and medium export respectively, be provided with the seal receptacle in the shut-off valve casing on, be located the top of seal receptacle is provided with actuating mechanism, actuating mechanism's lower extreme stretches into be connected with the seal cover subassembly in the shut-off valve casing, actuating mechanism can drive the removal of seal cover subassembly, the seal cover subassembly can with the seal receptacle cooperation is sealed, will two cavitys are blocked into to the inner chamber of shut-off valve casing.

Further, the trip valve casing includes the main barrel, the both ends welded connection of main barrel has the reducing joint, welded connection has entry flange and outlet flange respectively in the outside of reducing joint, corresponds actuating mechanism on the trip valve casing and is equipped with the installation barrel, is provided with actuating mechanism mounting flange on the installation barrel, installation barrel and main barrel welded connection, actuating mechanism mounting flange and installation barrel welded connection, actuating mechanism passes through the actuating mechanism mounting panel and installs on the actuating mechanism mounting flange.

Furthermore, the actuating mechanism comprises a spring cylinder, a spring is arranged in the spring cylinder, the spring pushes a piston towards the lower part of the spring cylinder, an inflation inlet is further formed in the spring cylinder, an air outlet is formed in the upper end of the spring cylinder, the piston can be pushed to jack towards the interior of the spring cylinder by inflation through the inflation inlet, the piston is connected with a cylinder shaft extending towards the exterior of the spring cylinder, and the front end of the cylinder shaft is connected with the sealing cover assembly through a shaft connecting piece.

Further, the sealed lid subassembly includes sealed lid guiding axle, the lower extreme of sealed lid guiding axle is provided with sealed lid mount pad, the cover is equipped with the sealing washer on the sealed lid mount pad, and the end cover dress is in on the sealing washer and will the lateral surface of sealing washer exposes, the end cover passes through the bolt will the sealing washer is fixed on the sealed lid mount pad, the lateral surface of sealing washer is the conical surface of invering from supreme down.

Further, the sealing ring comprises an elastic main body, a metal supporting piece is arranged inside the elastic main body, and an opening is formed in the elastic main body corresponding to the metal supporting piece.

Further, the actuating mechanism mounting panel pass through coupling bolt with actuating mechanism mounting flange fixed connection, the actuating mechanism mounting panel with be equipped with sealed step between the actuating mechanism mounting flange, be equipped with sealed the pad on the sealed step.

Furthermore, the actuating mechanism mounting plate is provided with a mounting bracket, the spring cylinder is fixed at the upper end of the mounting bracket through a bolt, the mounting bracket is provided with a shaft seal corresponding to the sealing cover guide shaft, and the actuating mechanism mounting plate is also provided with a guide sleeve corresponding to the sealing cover guide shaft.

Further, the seal receptacle sets up on the seal receptacle mount pad, the seal receptacle mount pad is fixed through dividing the chamber barrel in the trip valve casing, the seal receptacle mount pad with welded connection divides between the chamber barrel, the seal receptacle mount pad lower extreme still be provided with support round steel with the trip valve casing is connected.

Further, the seal receptacle is connected with the seal receptacle mounting seat in a welding manner.

The utility model discloses a trip valve of flammable nonstandard gas combustion ware, it drives sealed lid subassembly and seal receptacle cooperation through setting up actuating device, under actuating device's spring cylinder's effect, the valve that sealed lid subassembly and seal receptacle are constituteed is the normally closed valve, only when needing the air feed, through aerifing to the spring cylinder, drive sealed lid subassembly and seal receptacle separation through the spring cylinder, the gas is introduced from gas supply system and is burnt in through trip valve to the nozzle, in case unusual the emergence, can cut off the air feed of spring cylinder, under the effort of spring, sealed lid subassembly motion is sealed with the seal receptacle cooperation, the valve is closed rapidly, prevent accidents such as explosion of burning, good reliability.

Drawings

FIG. 1 is a schematic view of a shut-off valve for a combustible non-standard gas burner of the present invention;

FIG. 2 is a schematic semi-sectional view of another shut-off valve for a combustible non-standard gas burner of the present invention;

FIG. 3 is a schematic view of the shut-off valve of the present invention when open;

fig. 4 is a schematic view of the seal seat of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, it should be noted that the drawings provided in the present embodiment illustrate only the basic idea of the present invention in a schematic manner, and only the components related to the present invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of each component may be changed at will in actual implementation, and the component layout form may be more complicated.

The burner is composed of a burner (connected with a valve group and a pipeline) arranged on a heat utilization device, an air supply valve group (arranged in a pipeline system close to the burner), a filter, a heater, a pipeline, a combustion fan, a control system and the like, a stop valve is a key functional component and a safety performance component for supplying air to the burner in the gas combustion device, the gas can be introduced into the burner from the air supply system to be combusted only when the valve is opened, if an abnormality occurs, the valve needs to be closed rapidly, and safety accidents such as combustion explosion and the like are prevented;

see fig. 1 to 4, to the relatively poor problem of current trip valve reliability, the utility model discloses a trip valve for flammable nonstandard gas burner, including trip valve casing 1, the both ends of cutting off valve casing 1 are provided with medium entry 2 and medium export 3 respectively, be provided with seal receptacle 4 in the cutting off valve casing 1, on cutting off the valve casing, the top that is located the seal receptacle is provided with actuating mechanism 5, actuating mechanism 5's lower extreme stretches into the interior sealed lid subassembly 6 that is connected with of trip valve casing, actuating mechanism 5 can drive sealed lid subassembly 6 and remove, sealed lid subassembly 6 can be sealed with the cooperation of seal receptacle 4, the inner chamber that will cut off valve casing 1 blocks into two cavitys.

Specifically in this embodiment, trip valve casing 1 includes main barrel 101, the both ends welded connection of main barrel 101 has reducer union 102, the outside welded connection of reducer union 102 has inlet flange 103 and outlet flange 104 respectively, it is equipped with installation barrel 7 to correspond actuating mechanism on the trip valve casing 1, be provided with actuating mechanism mounting flange 8 on the installation barrel 7, installation barrel 7 and main barrel 101 welded connection, actuating mechanism mounting flange 8 and installation barrel 7 welded connection, actuating mechanism passes through actuating mechanism mounting panel 9 and installs on actuating mechanism mounting flange 8.

The utility model discloses a trip valve casing adopts the carbon steel of weldable, alloy steel, the stainless steel, duplex steel, non ferrous metal is seamless or welding steel pipe or steel sheet, system main barrel 101 is rolled up, rolling or forging or system reducer union 102, entry flange 103 and outlet flange 104, actuating mechanism mounting flange 8 adopts the welding, adopt pressure design to calculate the wall thickness optimization, the pressing force container requires to weld, after-welding stress relief heat treatment, proof quality such as nondestructive test, the various casting of this kind of full welded structure valve body fungible and the valve body of forging, reduce environmental pollution.

Specifically, the actuating mechanism 5 comprises a spring cylinder 501, a spring 502 is arranged in the spring cylinder 501, the spring 502 pushes a piston 503 towards the lower part of the spring cylinder 501, an air charging port 504 is further arranged on the spring cylinder, an air outlet 505 is arranged at the upper end of the spring cylinder, the piston 503 can be pushed to lift towards the spring cylinder by inflating through the air charging port 504, the piston 503 is connected with a cylinder shaft 506 extending out of the spring cylinder, and the front end of the cylinder shaft 506 is connected with the sealing cover assembly 6 through a shaft connecting piece.

Specifically, in this embodiment, the sealing cover assembly 6 includes the sealing cover guide shaft 601, the lower end of the sealing cover guide shaft 601 is provided with the sealing cover mounting seat 602, the sealing cover mounting seat 602 is sleeved with the sealing ring 603, the sealing end cover 604 covers the sealing ring 603 and exposes the outer side surface of the sealing ring 603, the sealing end cover 604 fixes the sealing ring 603 on the sealing cover mounting seat 602 through the bolt, the outer side surface of the sealing ring 603 is an inverted conical surface from bottom to top, the outer side surface of the sealing ring 603 is a part matched with the sealing seat 4, the outer side surface of the sealing ring 603 is an inverted conical surface from bottom to top, so that the sealing ring can better contact with the sealing seat 4, the sealing effect is improved, the sealing performance of the valve is ensured, and the reliability of the cut-off valve is improved.

The sealing structure has the advantages that the conical sealing ring and the sealing seat are matched for sealing, good guiding can be carried out in the sealing process, the sealing contact area is large, the sealing surface is not easy to damage and accurate in alignment, sealing is more reliable and durable, the sealing structure is particularly used for containing impurities, the impurities are not easy to attach firmly when the sealing surface is coated with lubricating grease during component media, the sealing surface is always in a high-temperature state, the impurities attached to the sealing surface are not easy to harden firmly, and in the sealing and closing process, the impurities are cleaned to realize normal sealing performance.

In an embodiment of the present invention, the sealing ring 603 includes an elastic body 6031, a metal support 6032 is disposed inside the elastic body, and the elastic body 6031 is provided with an opening 6033 corresponding to the metal support 6032.

The metal support 6032 prevents the seal from generating plastic deformation and sealing failure, and after the metal support 6032 is added inside, the elasticity and the sealing surface recovery performance of the seal are ensured, and the reliability and the durability of the metal support 6032 are improved.

In the embodiment of the invention, the actuator mounting plate 9 is fixedly connected with the actuator mounting flange 8 through a connecting bolt, a sealing step 10 is arranged between the actuator mounting plate and the actuator mounting flange, and a sealing gasket 11 is arranged on the sealing step 10 and used for further ensuring the sealing performance of the cut-off valve.

In the embodiment of the present invention, the actuator mounting plate 9 is provided with a mounting bracket 12, the spring cylinder 501 is fixed at the upper end of the mounting bracket 12 by a bolt, the mounting bracket 12 is provided with a shaft seal 13 corresponding to the seal cover guide shaft, and the actuator mounting plate 9 is further provided with a guide sleeve 14 corresponding to the seal cover guide shaft 601. The arrangement of the guide sleeve can ensure that the sealing cover component does not generate directional deviation in the moving process, and the sealing reliability of the cut-off valve is ensured.

The utility model discloses an in the embodiment, seal receptacle 4 sets up on seal receptacle mount pad 15, seal receptacle mount pad 15 is fixed in trip valve casing 1 through dividing chamber barrel 16, welded connection between seal receptacle mount pad 15 and the branch chamber barrel 16, seal receptacle mount pad 15 lower extreme still is provided with support round steel 17 and is connected with the trip valve casing, seal receptacle 4 and 15 welded connection of seal receptacle mount pad, the inside all welded structural design that adopts of trip valve, the reliability that the trip valve is sealed has been ensured, avoid the possibility that gas leakage takes place, the safety effect is good.

The following description explains the operation of the trip valve switch of the present invention:

1. when the valve needs to be opened, compressed air is injected from the inflation inlet to push the piston to move upwards, the spring in the cylinder is compressed, the piston drives the cylinder shaft, the shaft connecting piece and the sealing cover component to move upwards together, the sealing ring leaves the sealing seat, and the valve is opened;

2. after the valve is opened, the sealing piston does not move any more, compressed air pushes the sealing piston all the time, the conical surface seal is separated from the sealing seat by a certain distance, and a gas medium passes through the space between the conical surface seal and the sealing seat;

3. when the valve needs to be closed, compressed air is switched through the external multi-way valve, the air injection into the cylinder body is stopped, the compressed air is converted into outward exhaust, after the compressed air pushing the piston is removed, the compressed spring rebounds to push the piston downwards, the cylinder shaft, the shaft connecting piece and the sealing cover component are driven to move downwards together, the conical surface formed by the sealing ring falls back to the sealing surface of the sealing seat in a sealing mode, the medium is blocked by the conical surface seal and the sealing seat, and the valve is closed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A trip valve for a combustible non-standard gas burner, characterized in that: including the shut-off valve casing, the both ends of shut-off valve casing are provided with medium entry and medium export respectively, be provided with the seal receptacle in the shut-off valve casing on, be located the top of seal receptacle is provided with actuating mechanism, actuating mechanism's lower extreme stretches into be connected with the sealed lid subassembly in the shut-off valve casing, actuating mechanism can drive sealed lid subassembly removes, the sealed lid subassembly can with the seal receptacle cooperation is sealed, will the inner chamber of shut-off valve casing blocks into two cavitys.

2. A shut-off valve for a combustible non-standard gas burner according to claim 1, characterized in that: the trip valve casing includes the main barrel, the both ends welded connection of main barrel has the reducing joint, welded connection has entry flange and outlet flange respectively in the outside of reducing joint, corresponds actuating mechanism on the trip valve casing and is equipped with the installation barrel, is provided with actuating mechanism mounting flange on the installation barrel, installation barrel and main barrel welded connection, actuating mechanism mounting flange and installation barrel welded connection, actuating mechanism passes through the actuating mechanism mounting panel and installs on the actuating mechanism mounting flange.

3. A shut-off valve for a combustible non-standard gas burner according to claim 2, characterized in that: the actuating mechanism comprises a spring cylinder, a spring is arranged in the spring cylinder, the spring pushes a piston out of the spring cylinder, an inflation inlet is further formed in the spring cylinder, an air outlet is formed in the upper end of the spring cylinder, the piston can be pushed to lift towards the spring cylinder through inflation of the inflation inlet, the piston is connected with a cylinder shaft extending towards the outside of the spring cylinder, and the front end of the cylinder shaft is connected with the sealing cover assembly through a shaft connecting piece.

4. A shut-off valve for a combustible non-standard gas burner according to claim 3, characterized in that: the sealing cover assembly comprises a sealing cover guide shaft, a sealing cover mounting seat is arranged at the lower end of the sealing cover guide shaft, a sealing ring is sleeved on the sealing cover mounting seat, a sealing end cover is arranged on the sealing ring and exposes the outer side surface of the sealing ring, the sealing end cover is fixed on the sealing cover mounting seat through a bolt, and the outer side surface of the sealing ring is an inverted conical surface from bottom to top.

5. A shut-off valve for a combustible non-standard gas burner according to claim 4, characterized in that: the sealing ring comprises an elastic main body, a metal supporting piece is arranged inside the elastic main body, and an opening is formed in the elastic main body corresponding to the metal supporting piece.

6. A shut-off valve for a combustible non-standard gas burner according to claim 2, characterized in that: the actuating mechanism mounting panel pass through coupling bolt with actuating mechanism mounting flange fixed connection, the actuating mechanism mounting panel with be equipped with sealed step between the actuating mechanism mounting flange, be equipped with sealed the pad on the sealed step.

7. A shut-off valve for a combustible non-standard gas burner according to claim 4, characterized in that: the actuating mechanism mounting plate is provided with a mounting support, the spring air cylinder is fixed at the upper end of the mounting support through a bolt, the mounting support is provided with a shaft seal corresponding to the sealing cover guide shaft, and the actuating mechanism mounting plate is further provided with a guide sleeve corresponding to the sealing cover guide shaft.

8. A shut-off valve for a combustible non-standard gas burner according to claim 1, characterized in that: the seal receptacle sets up on the seal receptacle mount pad, the seal receptacle mount pad is fixed through dividing the chamber barrel in the trip valve casing, the seal receptacle mount pad with welded connection divides between the chamber barrel, seal receptacle mount pad lower extreme still be provided with support round steel with the trip valve casing is connected.

9. A shut-off valve for a combustible non-standard gas burner according to claim 8, characterized in that: the sealing seat is connected with the sealing seat mounting seat in a welding mode.