CN211097176U

CN211097176U - Fire arrester

Info

Publication number: CN211097176U
Application number: CN201921937187.2U
Authority: CN
Inventors: 蒋毅
Original assignee: Wuxi Hushan Chemical Equipment Co ltd
Current assignee: Wuxi Hushan Chemical Equipment Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-28
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a fire arrestor relates to safety device technical field, and its technical scheme main points are: including the spark arrester body, the spark arrester body is equipped with hinders fire chamber, air inlet, gas outlet, back-fire relief disc, and the back-fire relief disc is equipped with spring, couple, and the spark arrester body is equipped with closing device, and closing device includes closing disc, wind spring, fixed axle, and the closing disc is equipped with the perforation, and the closing disc is equipped with the recess, and the cell wall of recess is equipped with the hanging hole, and the spark arrester body is equipped with and supports the ring, and the firearm body is equipped with access hole, closure plate, reserve venthole, blast pipe, and the blast pipe is equipped with the back. By arranging the sealing device and the spring, after detonation is generated in the flame arrester, petroleum gas is blocked, so that the flame arrester is not easy to damage due to continuous combustion in the flame arrester; through arranging the access hole, the fire arrestor is convenient for personnel to overhaul the interior of the fire arrestor; through setting up blast pipe, reserve venthole, make this spark arrester's air inlet sealed the back, the petroleum gas can be followed reserve venthole and discharged.

Description

Fire arrester

Technical Field

The utility model relates to a safety device technical field, in particular to spark arrester.

Background

Flame arrestors are widely used in storage tanks for petroleum and petroleum products. When a tank storing a light petroleum product is exposed to an open fire or a lightning strike, a fire may be caused. Flame arresters are used in order to prevent this risk. It is a safety device used to stop the spread of flames (deflagrations or explosions) of flammable gases and flammable liquid vapors. Consists of a fire retardant core, a fire retardant device shell and accessories.

The prior Chinese utility model with the publication number of CN208611633U discloses a flame arrester, which comprises a first shell and a second shell, wherein the first shell and the second shell are symmetrically arranged, the first shell and the second shell are connected through a hexagon nut and a full-thread stud, a fire-arresting layer is arranged at the intersection of the first shell and the second shell, the fire-arresting layer comprises a stainless steel flat plate strip and a corrugated strip, and the corrugated strip is wound in the stainless steel flat plate strip; the corrugated strip is pressed into a first stripe and a second stripe by a die.

The above prior art solutions have the following drawbacks: when the inside detonation that produces of this spark arrester, still can pass through the back-fire relief layer by the petroleum gas in the storage tank, because petroleum gas is flammable, easily causes the sustained combustion in the spark arrester, damages the spark arrester.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fire arrester, this fire arrester is inside to produce after the detonation, makes the petroleum gas be difficult for continuing the burning and damaging this fire arrester inside this fire arrester.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a flame arrester, includes the flame arrester body, the flame arrester body is equipped with fire-retardant chamber, air inlet, gas outlet, the flame arrester body is equipped with and is used for the fire-retardant dish with air inlet, gas outlet separation, the fire-retardant dish is located fire-retardant intracavity, characterized by: a spring and a hook are fixedly arranged on the surface of the fire retardant plate facing the air inlet, the end part of the spring is fixedly connected with the fire retardant device body, the elastic direction of the spring is along the thickness direction of the fire retardant disc, the fire retardant device body is provided with a sealing device, the sealing device is positioned between the air inlet and the fire retardant disc, the sealing device comprises a sealing disc hooked on the hook, a coil spring and a fixed shaft fixedly connected with the fire retardant body, the sealing disk can be driven by the elasticity of the coil spring to rotate to seal the air inlet, the sealing disk is provided with a through hole for the fixed shaft to pass through, the coil spring is nested on the fixed shaft and has contraction elasticity, two ends of the coil spring are respectively fixedly connected with the fixed shaft and the inner wall of the through hole, the wall of the closed disc facing the fire-retardant disc is provided with a groove, and the wall of the groove is provided with a hanging hole for the end part of the hook to extend into;

when the interior of the fire-retardant cavity is detonated, the spring contracts, the end part of the hook is separated from the hanging hole, and the closed disc is driven by the coil spring to rotate to close the air inlet.

Through above-mentioned technical scheme, the spring has the buffering weakening effect to the impact force that the detonation produced, make the back-fire relief dish not fragile, when the detonation takes place inside the back-fire relief cavity, because the impact force that the detonation produced makes the back-fire relief dish move towards the air inlet, the spring shrink, the tip of couple deviates from the motion of back-fire relief dish, the tip of couple breaks away from the hanging hole, it is fixed that the closing dish is not being drawn by the couple hook, the wind spring replies, the closing dish receives the effect of wind spring shrink elasticity to rotate the answer normal position and seal the air inlet, with the petroleum gas separation, avoid detonation back petroleum gas continuation burning, cause the damage to the spark arrester.

Preferably, the flame arrester body is provided with a support ring which is used for being tightly pressed against the disc surface of the flame-retardant disc, which is far away from the spring, and the outer annular wall of the support ring is fixedly connected with the cavity wall of the flame-retardant cavity.

Through the technical scheme, the fire retardant disc can be tightly propped against the supporting ring due to the arrangement of the supporting ring, so that the fire retardant disc is not easily affected by slight vibration to vibrate up and down, and the stability of the fire retardant disc is improved.

Preferably, the circumferential side wall of the closing disk is provided with an elastic rubber layer.

Through the technical scheme, the sealing effect of the sealing disc on the air inlet is better due to the arrangement of the elastic rubber layer.

Preferably, the flame arrester body is equipped with the access hole, is used for the confined closure plate of access hole, the closure plate passes through bolt and flame arrester body fixed connection, the access hole is located between fire blocking dish and the closure plate.

Through above-mentioned technical scheme, the setting of access hole is convenient for personnel to closing device's maintenance and reset.

Preferably, the circumferential side wall of the closing plate is provided with a sealing ring for sealing a gap between the closing plate and the inner wall of the access opening.

Through above-mentioned technical scheme, the setting of sealing washer can prevent that the petroleum gas from leaking to the external world through the clearance between the inner wall of closing plate and access hole.

Preferably, the outer wall of the flame arrester body is provided with a mounting groove for the embedded installation of the closing plate.

Through above-mentioned technical scheme, the setting of mounting groove makes the fixed connection of closing plate and spark arrester body more stable.

Preferably, the flame arrester body is provided with a spare air outlet and an exhaust pipe communicated with the spare air outlet, and the spare air outlet is positioned below the fixed shaft;

when the closed disk is hooked on the hook, the standby air outlet hole is closed by the side wall of the closed disk.

Through the technical scheme, the arrangement of the exhaust pipe and the sealing device of the air inlet cup are adopted, and when the sealing device of the air inlet cup is sealed, petroleum gas can be conveyed to the outside from the exhaust pipe of the standby air outlet transmission channel.

Preferably, the exhaust pipe is provided with a fire retardant piece, the exhaust pipe is blocked by the fire retardant piece, and the material of the fire retardant piece is the same as that of the fire retardant disc.

Through above-mentioned technical scheme, the setting up of back-fire relief spare makes the blast pipe also have the ability of back-fire relief, prevents that flame from getting into in the storage tank from the blast pipe.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

by arranging the sealing device and the spring, after detonation is generated in the flame arrester, petroleum gas is blocked, so that the flame arrester is not easy to damage due to continuous combustion in the flame arrester;

through arranging the access hole, the fire arrestor is convenient for personnel to overhaul the interior of the fire arrestor;

through setting up blast pipe, reserve venthole, make this spark arrester's air inlet sealed the back, the petroleum gas can be followed reserve venthole and discharged.

Drawings

FIG. 1 is a perspective view of a flame arrestor of an embodiment;

fig. 2 is a sectional view of the embodiment.

In the figures, 1, flame arrestor body; 11. a support ring; 12. a ring groove; 13. an access hole; 14. a closing plate; 15. a seal ring; 16. mounting grooves; 17. an exhaust pipe; 171. a firestop element; 18. a spare air outlet hole; 2. a fire retarding cavity; 3. an air inlet; 4. an air outlet; 5. a fire retardant tray; 51. a spring; 52. hooking; 6. a closure device; 61. a closing disk; 611. perforating; 612. a groove; 613. hanging holes; 62. a coil spring; 63. and fixing the shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a flame arrester, including flame arrester body 1, flame arrester body 1 is equipped with and hinders fire chamber 2, air inlet 3, gas outlet 4, and flame arrester body 1 is equipped with and is used for the fire stopping dish 5 with

air inlet

3, 4 separation in the gas outlet, and fire stopping dish 5 is current technique, and fire stopping dish 5 is located and hinders fire chamber 2.

Hinder quotation of fire stopping disc 5 towards air inlet 3 and set firmly spring 51, couple 52, spring 51 is close to the avris that hinders quotation 5, spring 51 is equipped with a plurality ofly along the circumference interval of back-fire stopping disc 5, spring 51's tip and flame arrester body 1 fixed connection, flame arrester body 1 is equipped with and is used for and hinders quotation that deviates from spring 51 of quotation 5 and offsets ring 11, it is located between gas outlet 4 and the back-fire stopping disc 5 to support ring 11, support ring 11's outer rampart and the chamber wall fixed connection in back-fire relief chamber 2, it forms annular groove 12 with the inner wall in back-fire relief chamber 2 to support ring 11, spring 51 is located annular groove 12, back-fire stopping disc 5 offsets with the cell wall of annular 12, spring 51 has outer elasticity that expands and supports back-fire stopping disc 5 tightly on supporting ring 11, make and hinder quotation 5 difficult rocking.

The elastic direction of the spring 51 is along the thickness direction of the fire retardant disc 5, the fire retardant device body 1 is provided with a sealing device 6, the sealing device 6 is located between the air inlet 3 and the fire retardant disc 5, the sealing device 6 comprises a sealing disc 61 hooked on the hook 52, a coil spring 62 and a fixing shaft 63, two ends of the fixing shaft 63 are fixedly connected with the inner wall of the air inlet 3, the sealing disc 61 is circular, the axial direction of the fixing shaft 63 is along the radial direction of the sealing disc 61, the sealing disc 61 can be driven by the elastic force of the coil spring 62 to rotate to seal the air inlet 3, a through hole 611 for the fixing shaft 63 to penetrate through is formed in the side wall of the sealing disc 61, the axial direction of the through hole 611 is along the radial direction of the sealing disc 61, an elastic rubber layer is arranged on the circumferential side wall of the sealing disc. The coil spring 62 is nested on the fixed shaft 63, the coil spring 62 has contractive elasticity, when the closing disc 61 is parallel to the fire retardant disc 5, the coil spring 62 is in a normal state, two ends of the coil spring 62 are fixedly connected with the outer wall of the fixed shaft 63 and the inner wall of the through hole 611 respectively, the wall of the closing disc 61 facing the fire retardant disc 5 is provided with a groove 612 for the hook 52 to extend into, the wall of the groove 612 is provided with a hanging hole 613 for the end of the hook 52 to extend into, the length direction of the groove 612 is along the radial direction of the closing disc 61, the axial direction of the hanging hole 613 is the same as the length direction of the groove 612, the hanging hole 613 is positioned on the wall of the groove 612 close to the side of the closing disc 61, and the length of the;

when detonation occurs in the flame retardant cavity 2, the spring 51 is compressed and contracted, the end of the hook 52 moves away from the flame retardant disc 5, the end of the hook 52 is separated from the hanging hole 613, the closed disc 61 is not hooked and fixed by the hook 52, the coil spring 62 is restored, the closed disc 61 rotates under the action of the contraction elastic force of the coil spring 62 to restore the original position and seal the air inlet 3, and the petroleum gas is blocked to avoid the damage to the flame retardant device caused by the continuous combustion of the petroleum gas after the detonation.

Flame arrester body 1 is equipped with access hole 13, is used for closing plate 14 with access hole 13 confined, and closing plate 14 passes through bolt and 1 fixed connection of flame arrester body, and

access hole

13 and 2 intercommunications of hindering the fire chamber, and access hole 13 are located and hinder between fire tray 5 and the closing tray 61, and the setting up of access hole 13 is convenient for personnel to the maintenance and the reseing of closing device 6. The circumferential side wall of the closing plate 14 is provided with a sealing ring 15 for closing a gap between the closing plate 14 and the inner wall of the access opening 13. The provision of the sealing ring 15 prevents leakage of petroleum gas to the outside through the gap between the closure plate 14 and the inner wall of the access opening 13. The outer wall of the flame arrester body 1 is provided with a mounting groove 16 in which the closure plate 14 is fitted. The shape of the mounting slots 16 corresponds to the shape of the closure plate 14. The provision of mounting slots 16 provides a more stable secure connection of the closure plate 14 to the flame arrestor body 1.

The flame arrester body 1 is provided with a standby air outlet 18 and an exhaust pipe 17 communicated with the standby air outlet 18, the standby air outlet 18 is positioned on the inner wall of the air outlet 4 below the fixed shaft 63, when the sealing disc 61 is hooked on the hook 52, the standby air outlet 18 is sealed by the side wall of the sealing disc 61, and the exhaust pipe 17 is fixedly connected with the flame arrester body 1. When the sealing disk 61 is driven by the contraction elastic force of the coil spring 62 to rotate and reset, the sealing disk 61 is far away from the standby air outlet hole 18, the standby air outlet hole 18 is not closed, the exhaust pipe 17 is arranged, and when the air inlet 3 cup sealing device 6 is closed, the petroleum gas can be conveyed to the outside from the standby air outlet hole 18 to the exhaust pipe 17.

The blast pipe 17 sets firmly back-fire relief member 171, and back-fire relief member 171 is cylindrically, and the lateral wall of back-fire relief member 171 is hugged closely with the pipe wall of blast pipe 17, and back-fire relief member 171's material is the same with back-fire relief disc 5's material, and back-fire relief member 171's setting makes blast pipe 17 also have the ability of back-fire relief, prevents that flame from getting into in the storage tank from blast pipe 17.

Through setting up closing device 6, spring 51, this spark arrester is inside to produce the detonation back, with the petroleum gas separation, makes it be difficult for continuing burning and damaging this spark arrester inside this spark arrester. Through setting up access hole 13, make things convenient for personnel to overhaul this spark arrester inside. By arranging the exhaust pipe 17 and the spare air outlet 18, after the air inlet 3 of the flame arrester is sealed, petroleum gas can be discharged from the spare air outlet 18.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a flame arrester, includes spark arrester body (1), spark arrester body (1) is equipped with hinders fire chamber (2), air inlet (3), gas outlet (4), spark arrester body (1) is equipped with and is used for hindering fire dish (5) with air inlet (3), gas outlet (4) separation, hinder fire dish (5) and be located and hinder fire chamber (2), characterized by: the flame retardant device is characterized in that a spring (51) and a hook (52) are fixedly arranged on the disc surface of the flame retardant disc (5) facing the air inlet (3), the end part of the spring (51) is fixedly connected with the flame retardant device body (1), the elastic direction of the spring (51) is along the thickness direction of the flame retardant disc (5), the flame retardant device body (1) is provided with a sealing device (6), the sealing device (6) is positioned between the air inlet (3) and the flame retardant disc (5), the sealing device (6) comprises a sealing disc (61) hooked on the hook (52), a coil spring (62) and a fixing shaft (63) fixedly connected with the flame retardant device body (1), the sealing disc (61) can be driven by the elastic force of the coil spring (62) to rotate to seal the air inlet (3), the sealing disc (61) is provided with a through hole (611) for the fixing shaft (63) to pass through, and the coil spring (62) is nested on the fixing shaft, the coil spring (62) has contraction elasticity, two ends of the coil spring (62) are fixedly connected with the inner walls of the fixing shaft (63) and the through hole (611) respectively, a groove (612) is formed in the wall, facing the fire retardant disc (5), of the closed disc (61), and a hanging hole (613) for the end portion of the hook (52) to extend into is formed in the wall of the groove (612);

when detonation occurs inside the fire retardant cavity (2), the spring (51) contracts, the end part of the hook (52) is separated from the hanging hole (613), and the closing disc (61) is driven by the coil spring (62) to rotate so as to close the air inlet (3).

2. A flame arrestor as defined in claim 1, wherein: the flame arrester body (1) is provided with a support ring (11) which is used for being tightly pressed against the disc surface of the flame arresting disc (5) departing from the spring (51), and the outer ring wall of the support ring (11) is fixedly connected with the cavity wall of the flame arresting cavity (2).

3. A flame arrestor as defined in claim 1, wherein: the circumferential side wall of the closed disk (61) is provided with an elastic rubber layer.

4. A flame arrestor as defined in claim 1, wherein: flame arrester body (1) is equipped with access hole (13), is used for closing plate (14) with access hole (13) confined, closing plate (14) pass through bolt and flame arrester body (1) fixed connection, access hole (13) are located between fire stopping dish (5) and closing dish (61).

5. A flame arrestor as defined in claim 4, wherein: and a sealing ring (15) used for sealing a gap between the closing plate (14) and the inner wall of the access hole (13) is arranged on the circumferential side wall of the closing plate (14).

6. A flame arrestor as defined in claim 4, wherein: the outer wall of the flame arrester body (1) is provided with a mounting groove (16) for embedding and mounting the closing plate (14).

7. A flame arrestor as defined in claim 1, wherein: the flame arrester body (1) is provided with a standby air outlet (18) and an exhaust pipe (17) communicated with the standby air outlet (18), and the standby air outlet (18) is positioned below the fixed shaft (63);

when the closing disc (61) is hooked on the hook (52), the side wall of the closing disc (61) closes the spare air outlet hole (18).

8. A flame arrestor as defined in claim 7, wherein: the exhaust pipe (17) is provided with a fire retardant part (171), the exhaust pipe (17) is blocked by the fire retardant part (171), and the material of the fire retardant part (171) is the same as that of the fire retardant disc (5).