CN115370457A - High-temperature exhaust explosion-proof valve - Google Patents
High-temperature exhaust explosion-proof valve Download PDFInfo
- Publication number
- CN115370457A CN115370457A CN202211053811.9A CN202211053811A CN115370457A CN 115370457 A CN115370457 A CN 115370457A CN 202211053811 A CN202211053811 A CN 202211053811A CN 115370457 A CN115370457 A CN 115370457A
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- Prior art keywords
- explosion
- valve
- proof valve
- pipe
- proof
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/087—Other arrangements or adaptations of exhaust conduits having valves upstream of silencing apparatus for by-passing at least part of exhaust directly to atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N2410/14—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of excessive pressure, e.g. using a safety valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a high-temperature exhaust explosion-proof valve which comprises an explosion venting pipe, fixing ribs, supporting ribs and a valve cover, wherein the fixing ribs are arranged on one side of the explosion venting pipe, the supporting ribs are symmetrically arranged on the front side and the rear side of the fixing ribs, one ends of the supporting ribs are fixedly connected with the valve cover, bolts penetrate between the other ends of the supporting ribs and the fixing ribs, nuts are arranged on the outer side surfaces of the bolts, and a margin is reserved between the nuts and the supporting ribs, so that the two supporting ribs rotate around the bolts.
Description
Technical Field
The invention relates to the technical field of internal combustion engines, in particular to a high-temperature exhaust explosion-proof valve.
Background
When a gaseous fuel engine fails to fire or otherwise malfunctions in a cylinder, unburned combustible mixtures may be present in the exhaust pipe, which may cause a sharp rise in pressure in the exhaust pipe once ignited. Therefore, an exhaust explosion-proof valve is arranged on the exhaust pipeline, and the pressure in the exhaust pipeline is released in time, so that the safe operation of the gas fuel engine is ensured.
In the prior art, patent number 201910151151X discloses an exhaust emission system for a dual-fuel engine, when the pressure in a main exhaust pipe is greater than a set value, an anti-explosion protection sheet is broken, so that gas in the main exhaust pipe can enter a standby exhaust pipe through a connecting pipeline, but after an anti-explosion valve with the structure acts, the anti-explosion sheet needs to be switched, detached and replaced, the operation and maintenance cost is increased, the structure is complex, the switching of the anti-explosion sheet needs time, and the continuous and safe operation of the gas fuel engine cannot be ensured in the time of switching the anti-explosion sheet and recovering the normal operation of the system; in addition, the blast pipe explosion-proof valve that patent number 201710412133.3 discloses in addition, the valve block passes through the pressure effect of spring, open the valve block when compressed air reaches the specified value, carry out the pressure release to the engine, but engine exhaust temperature is up to 600 ℃, the spring can appear the problem that became invalid under high temperature direct action for a long time, if can not in time discover and change, will bring the potential safety hazard, influence gas fuel engine's safe operation, consequently, need for a high temperature resistant, need not to tear open and trade and can not become invalid explosion-proof valve at high temperature state urgently.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a high-temperature exhaust explosion-proof valve which can not lose efficacy under the action of high temperature of engine exhaust and can automatically reset, so that the problems in the background art can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high temperature exhaust explosion-proof valve, is including letting out the booster, fixed muscle, brace rod and valve gap, let out the booster setting in connecting pipe department, the one end and the gas fuel engine exhaust return bend of connecting pipe are connected, and the other end and the spark arrester of connecting pipe are connected, let out the upper end of booster and be provided with the valve gap, one side of letting out the booster is provided with fixed muscle, bilateral symmetry is provided with the brace rod around fixed muscle, the one end and the valve gap fixed connection of brace rod, the cross-under has the bolt between the other end of brace rod and the fixed muscle, the lateral surface of bolt is provided with the nut, leave the surplus between nut and the brace rod for two brace rods rotate around the bolt.
As a preferred technical solution of the present invention, the gravity of the valve cover and the two support ribs is the same as the acting force applied to the explosion-proof valve when the explosion-proof valve reaches the opening condition, which is specifically expressed as:
G＝F
G＝ρ×V×g
in the formula:
g is the gravity of valve gap and two brace rods, unit: n;
f-acting force applied when the explosion-proof valve reaches an opening condition, unit: n;
rho-density, the density of the main body material of the explosion-proof valve is 7850kg/m 3 ；
V is the volume of valve cover and two support ribs, unit: m is 3 ；
g is gravity acceleration, and 9.8N/kg is taken;
the opening pressure of the explosion-proof valve is the ratio of acting force to acting area when the explosion-proof valve reaches the opening condition, and the acting area of the explosion-proof valve is the sectional area of the inner wall of the explosion venting pipe, which is specifically expressed as:
P＝F/S＝G/S
s＝π×D 2 /4
in the formula:
p-opening pressure of explosion-proof valve, unit: pa;
s-action area, namely the sectional area of the inner wall of the explosion venting pipe, unit: m is a unit of 2 ；
Pi-circumference ratio, taking 3.14;
d, the inner diameter of the explosion venting pipe.
According to a preferable technical scheme of the invention, a valve seat is arranged on the outer side face of the upper end of the explosion venting pipe, a dovetail groove is arranged on the lower end face of the valve cover, a sealing strip is arranged in the dovetail groove, and the valve cover and the valve seat are sealed through the sealing strip.
As a preferable technical scheme of the invention, the sealing strip is made of high-temperature-resistant flexible materials.
In a preferred embodiment of the present invention, the nut is fixed to an outer surface of the bolt by spot welding.
As a preferred technical scheme of the invention, the explosion venting pipe is a straight pipe.
Compared with the prior art, the invention has the beneficial effects that: this explosion-proof valve of high temperature exhaust simple structure, it is reliable, can not become invalid under the engine exhaust high temperature effect, through set up the brace rod on the valve gap, and pass the bolt in the one end of brace rod, make the brace rod rotate around the bolt, explosion-proof valve can rely on gravity automatic re-setting after the action, do not influence the continuous safe operation of gas fuel engine, and the vulnerable spare part that easily becomes invalid of irrelevant key on this explosion-proof valve, when guaranteeing the continuous safe operation of engine, the fortune dimension cost has been reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an exhaust explosion-proof valve;
FIG. 3 is a top view of FIG. 2;
fig. 4 is a structural schematic diagram of the valve cover.
In the figure: the gas fuel engine explosion relief device comprises 1 fixing rib, 2 supporting ribs, 3 valve covers, 301 dovetail grooves, 4 sealing strips, 5 valve seats, 6 explosion relief pipes, 7 bolts, 8 nuts, 9 gas fuel engine exhaust elbow pipes, 10 connecting pipes and 11 flame arresters.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments (for convenience of description and understanding, the upper side of fig. 1 is described as the upper side below). All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high temperature exhaust explosion-proof valve, including letting out the detonation tube 6, fixed muscle 1, brace rod 2 and valve gap 3, let out detonation tube 6 and set up in connecting pipe 10 department, the one end and the gas fuel engine exhaust return bend 9 of connecting pipe 10 are connected, the other end and the spark arrester 11 of connecting pipe 10 are connected, the upper end of letting out detonation tube 6 is provided with valve gap 3, one side of letting out detonation tube 6 is provided with fixed muscle 1, bilateral symmetry is provided with brace rod 2 around fixed muscle 1, the one end and the valve gap 3 fixed connection of brace rod 2, bolt 7 has been worn to have connect between the other end of brace rod 2 and the fixed muscle 1, the lateral surface at bolt 7 is fixed through the mode of spot welding to nut 8, leave the surplus between nut 8 and the brace rod 2, make two brace rods 2 rotate around bolt 7.
The outer side face of the upper end of the explosion venting pipe 6 is provided with a valve seat 5, the sealing strip 4 cannot fall off after the explosion-proof valve acts, the lower end face of the valve cover 3 is provided with a dovetail groove 301, the sealing strip 4 is arranged in the dovetail groove 301, the valve cover 3 and the valve seat 5 are sealed through the sealing strip 4, the sealing strip 4 is made of high-temperature-resistant flexible materials, high temperature can be borne, and the sealing strip 4 cannot be damaged by high temperature.
In order to ensure that the valve cover 3 is tightly attached to the valve seat 5 when the explosion-proof valve does not act, the joint surface of the valve seat 5 and the valve cover 3 adopts a high-precision machining process.
The explosion venting pipe 6 is a straight pipe for connection to the exhaust pipe of the gas fuel engine through a connecting pipe 10 of different structure and size.
The gravity of the valve cover 3 and the two support ribs 2 is the same as the acting force borne by the explosion-proof valve when the explosion-proof valve reaches the opening condition, and the gravity is specifically represented as follows:
G＝F
G＝ρ×V×g
in the formula:
g is the gravity of valve gap and two brace rods, unit: n;
f, acting force borne by the explosion-proof valve when the explosion-proof valve reaches an opening condition, unit: n;
rho-density, the density of the main body material of the explosion-proof valve is 7850kg/m 3 ；
V is the volume of valve cover and two support ribs, unit: m is 3 ；
g is gravity acceleration, and 9.8N/kg is taken;
the opening pressure of the explosion-proof valve is the ratio of the acting force to the acting area when the explosion-proof valve reaches the opening condition, and the acting area of the explosion-proof valve is the sectional area of the inner wall of the explosion venting pipe 6, which is specifically expressed as:
P＝F/S＝G/S
s＝π×D 2 /4
in the formula:
p-opening pressure of the explosion-proof valve, unit: pa;
s-action area, namely the sectional area of the inner wall of the explosion venting pipe, unit: m is 2 ；
Pi-circumference ratio, 3.14;
d, the inner diameter of the explosion venting pipe.
In order to ensure the safety of the exhaust pipe of the gas engine, the opening pressure of the high-temperature exhaust explosion-proof valve is not more than 10kPa, carbon steel Q235 is used as the material of the valve cover 3 and the supporting rib 2, and the gravity G of the valve cover 3 and the supporting rib 2 is according to the formula: g = ρ × V × G =7850 × 4.52 × 10 -3 9.8, the gravity G of the valve cover 3 and the support rib 2 is about 347.7N; the action area S of the high-temperature exhaust valve, namely the sectional area of the inner wall of the explosion venting pipe 6,
according to the formula: s = π × D 2 /4＝3.14×0.215 2 /4, the cross-sectional area S of the inner wall of the explosion venting pipe 6 is about 0.036m 2 (ii) a The gravity G of the valve cover 3 and the supporting rib 2 is equal to the acting force F borne by the high-temperature exhaust explosion-proof valve when the high-temperature exhaust explosion-proof valve reaches an opening condition; the opening pressure P of the high-temperature exhaust explosion-proof valve is the ratio of the acting force F and the acting area S when the high-temperature exhaust explosion-proof valve reaches the opening condition, and according to the formula: p = F/S = G/S =347.7/0.036, and the opening pressure P of the high-temperature exhaust explosion-proof valve is about 9.6kPa.
When the gas fuel engine normally runs, the tail gas of the engine is discharged to a safe area through the exhaust elbow 9, the connecting pipe 10 and the flame arrester 11, when the ignition of the gas fuel engine fails or other faults occur in one cylinder, the unburned combustible mixture in the exhaust elbow 9 of the gas fuel engine is ignited to cause the pressure in the exhaust pipe to be rapidly increased, when the pressure in the exhaust pipe reaches the opening pressure of the high-temperature exhaust explosion-proof valve of 9.6kPa, the high-temperature exhaust explosion-proof valve acts, the valve cover 3 is opened to release the pressure in the exhaust pipe, the pressure in the exhaust pipe is recovered to be normal, the valve cover 3 is closed under the action of the gravity of the valve cover 3 and the supporting rib 2, and the engine normally runs.
The invention has simple and reliable structure, can resist the high temperature of the engine exhaust pipe, adopts a flip structure, has mechanical gravity type explosion prevention, can quickly reset after the high temperature exhaust explosion prevention valve acts, can open and close the valve cover 3 for cyclic use, and ensures the continuous and safe operation of the gas fuel engine.
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 (6)
1. The utility model provides a high temperature explosion-proof valve that exhausts, is including letting out burst pipe (6), fixed muscle (1), brace rod (2) and valve gap (3), let out burst pipe (6) and set up in connecting pipe (10) department, the one end and the gaseous fuel engine exhaust return bend (9) of connecting pipe (10) are connected, and the other end and the spark arrester (11) of connecting pipe (10) are connected, its characterized in that: the explosion venting pipe is characterized in that a valve cover (3) is arranged at the upper end of the explosion venting pipe (6), a fixing rib (1) is arranged on one side of the explosion venting pipe (6), supporting ribs (2) are symmetrically arranged on the front side and the rear side of the fixing rib (1), one end of each supporting rib (2) is fixedly connected with the valve cover (3), a bolt (7) is connected between the other end of each supporting rib (2) and the fixing rib (1) in a penetrating mode, a nut (8) is arranged on the outer side face of the bolt (7), and a surplus is reserved between the nut (8) and the supporting ribs (2) to enable the two supporting ribs (2) to rotate around the bolt (7).
2. A high temperature exhaust explosion-proof valve as defined in claim 1, wherein: the valve cover (3) and the two support ribs (2) are the same as the acting force exerted when the explosion-proof valve reaches the opening condition, and the specific expression is as follows:
G＝F
G＝ρ×V×g
in the formula:
g is the gravity of valve gap and two brace rods, unit: n;
f, acting force borne by the explosion-proof valve when the explosion-proof valve reaches an opening condition, unit: n;
rho-density, the density of the main body material of the explosion-proof valve is7850kg/m 3 ；
V is the volume of valve cover and two support ribs, unit: m is a unit of 3 ；
g is gravity acceleration, and 9.8N/kg is taken;
the opening pressure of the explosion-proof valve is the ratio of acting force to acting area when the explosion-proof valve reaches the opening condition, and the acting area of the explosion-proof valve is the sectional area of the inner wall of the explosion venting pipe (6), and is specifically expressed as:
P＝F/S＝G/S
s＝π×D 2 /4
in the formula:
p-opening pressure of the explosion-proof valve, unit: pa;
s-action area, namely the sectional area of the inner wall of the explosion venting pipe, unit: m is a unit of 2 ；
Pi-circumference ratio, taking 3.14;
d, the inner diameter of the explosion venting pipe.
3. A high temperature exhaust explosion-proof valve as defined in claim 1, wherein: the explosion venting pipe is characterized in that a valve seat (5) is arranged on the outer side face of the upper end of the explosion venting pipe (6), a dovetail groove (301) is formed in the lower end face of the valve cover (3), a sealing strip (4) is arranged in the dovetail groove (301), and the valve cover (3) and the valve seat (5) are sealed through the sealing strip (4).
4. A high temperature exhaust explosion-proof valve as defined in claim 3, wherein: the sealing strip (4) is made of high-temperature-resistant flexible materials.
5. A high temperature exhaust explosion-proof valve as defined in claim 1, wherein: the nut (8) is fixed on the outer side surface of the bolt (7) in a spot welding mode.
6. A high temperature exhaust explosion-proof valve as defined in claim 1, wherein: the explosion venting pipe (6) is a straight pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211053811.9A CN115370457A (en) | 2022-08-30 | 2022-08-30 | High-temperature exhaust explosion-proof valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211053811.9A CN115370457A (en) | 2022-08-30 | 2022-08-30 | High-temperature exhaust explosion-proof valve |
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| Publication Number | Publication Date |
|---|---|
| CN115370457A true CN115370457A (en) | 2022-11-22 |
Family
ID=84069487
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211053811.9A Pending CN115370457A (en) | 2022-08-30 | 2022-08-30 | High-temperature exhaust explosion-proof valve |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671060A (en) * | 1984-03-07 | 1987-06-09 | Wilkens Robert G | Explosion-protected diesel engine |
| CN101614146A (en) * | 2009-08-01 | 2009-12-30 | 煤炭科学研究总院太原研究院 | Anti-explosion diesel engine |
| CN101649762A (en) * | 2009-07-30 | 2010-02-17 | 煤炭科学研究总院太原研究院 | Exhaust device of anti-explosion diesel engine |
| CN103233799A (en) * | 2013-05-08 | 2013-08-07 | 昆山晋桦豹胶轮车制造有限公司 | High-power explosion-proof diesel engine |
| CN203879588U (en) * | 2014-04-11 | 2014-10-15 | 南车玉柴四川发动机股份有限公司 | High-power dual-fuel locomotive engine exhaust explosion protection system |
| CN105275682A (en) * | 2014-07-04 | 2016-01-27 | 无锡国煤重工机械有限公司 | Explosion-proof diesel engine |
| CN107120185A (en) * | 2017-06-07 | 2017-09-01 | 广西九壹动力科技有限公司 | Gas engine peculiar to vessel |
| CN210106692U (en) * | 2019-04-25 | 2020-02-21 | 江苏天佳环保科技有限公司 | Vertical explosion-proof valve |
| CN210661534U (en) * | 2019-01-17 | 2020-06-02 | 江苏羚羊水泥工程技术有限公司 | Novel cylinder type explosion-proof valve |
| CN215258042U (en) * | 2021-04-13 | 2021-12-21 | 秦皇岛中青冶金阀门有限公司 | High-temperature explosion-proof valve capable of being opened and closed automatically |
-
2022
- 2022-08-30 CN CN202211053811.9A patent/CN115370457A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671060A (en) * | 1984-03-07 | 1987-06-09 | Wilkens Robert G | Explosion-protected diesel engine |
| CN101649762A (en) * | 2009-07-30 | 2010-02-17 | 煤炭科学研究总院太原研究院 | Exhaust device of anti-explosion diesel engine |
| CN101614146A (en) * | 2009-08-01 | 2009-12-30 | 煤炭科学研究总院太原研究院 | Anti-explosion diesel engine |
| CN103233799A (en) * | 2013-05-08 | 2013-08-07 | 昆山晋桦豹胶轮车制造有限公司 | High-power explosion-proof diesel engine |
| CN203879588U (en) * | 2014-04-11 | 2014-10-15 | 南车玉柴四川发动机股份有限公司 | High-power dual-fuel locomotive engine exhaust explosion protection system |
| CN105275682A (en) * | 2014-07-04 | 2016-01-27 | 无锡国煤重工机械有限公司 | Explosion-proof diesel engine |
| CN107120185A (en) * | 2017-06-07 | 2017-09-01 | 广西九壹动力科技有限公司 | Gas engine peculiar to vessel |
| CN210661534U (en) * | 2019-01-17 | 2020-06-02 | 江苏羚羊水泥工程技术有限公司 | Novel cylinder type explosion-proof valve |
| CN210106692U (en) * | 2019-04-25 | 2020-02-21 | 江苏天佳环保科技有限公司 | Vertical explosion-proof valve |
| CN215258042U (en) * | 2021-04-13 | 2021-12-21 | 秦皇岛中青冶金阀门有限公司 | High-temperature explosion-proof valve capable of being opened and closed automatically |
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