CN201093183Y - Water sealing type fire retardant blowout device - Google Patents

Abstract

The utility model relates to a water sealed fire retardant explosion release device, which is used for the field of the inflammable and explosion hazard gas long-distance pipeline transportation. The device mainly comprises a fire arrestor and an explosion release implement, under the general transportation condition, combustive and explosion hazard gases flow from an inlet pipe to an outlet pipe through the fire arrestor and the explosion release implement, when the gases in the pipeline of the outlet pipe explode or burn, shock wave generated by explosion releases explosion pressure through an explosion release piece; at the same time, sparkle generated by the explosion reaches the fire-arresting aim through sealed water, thereby ensuring that the explosion or the burning cannot be transferred to the pipeline of the inlet pipe, and finally reaching the aim of protecting the transfer pipeline at the inlet end and the accessory equipment. The utility model combines fire-arresting and explosion release functions together, thereby perfecting the function of products; and the utility model is provided with a water level control device and a compensating mechanism, realizes automatic monitoring, automatically compensates sealed water in real time, and ensures the reliability of fire-arresting.

Description

Water-sealed fire arresting and explosion venting device

technical field

The utility model relates to long-distance pipeline transportation of inflammable and explosive gases, in particular to a water-sealed fire arresting and explosion venting device for gas transportation pipelines.

Background technique

At present, the devices used to prevent combustion and explosion of flammable, explosive, harmful gases or material conveying pipelines are relatively single, either only for fire arresting, or only for explosion venting. For fire-stopping devices, some use water-sealing devices to cut off the communication between gas and other systems, forcing the gas to flow in one direction and fire-stopping combustible gases. The widely used water-sealing devices are simple overflow tanks and Foam sieve plate structure, they have the advantages of simple structure and convenient use, but they have the disadvantages that they are not self-explosion-proof, and the amount of liquid is large when the gas comes out of the tank, especially for combustible gases with unstable flow. The water seal will form a gas column and cause the water seal to lose its fire resistance, so they are not suitable for the separation of combustible gases and fire and explosion protection. At present, the explosion venting facilities of the gas system mainly use bursting discs made of thin aluminum plates. When an explosion occurs inside the equipment, the thrust generated by the combustion of gas will be used to tear the bursting discs to achieve the purpose of explosion venting. Chinese patent ZL02278066.1 prevents fire by filling water in the water-sealed tank, and installs an explosion-proof plate on the head of the water-sealed tank body to prevent the explosion of the water tank body. Explosion-proof plates are all arranged on the top of the water-sealed tank body, and the area of the explosion-proof plates is limited, so the explosion-venting area is also limited. Therefore, the pressure relief effect is relatively poor.

Utility model content

The purpose of the utility model is to provide a water-sealed fire arresting and explosion venting device which integrates fire arresting and explosion protection and has good fire arresting and explosion proof effects.

In order to achieve the above object, the technical scheme of the utility model is as follows: a water-sealed fire arresting and explosion venting device, including a flame arrester, which is composed of a fire arrester, an air inlet pipe, an air outlet pipe, sealing water and an inlet and outlet pipe. One end of the air inlet pipe is located outside the fire arresting tank, and the other end extends into the fire arresting tank and is inserted below the surface of the sealing water. , an exhaust pipe is installed in the explosion venting tank, the mouth of the upper end of the exhaust pipe faces the top of the explosion venting tank, and is supported in the explosion venting tank by the right support body, and the lower end of the exhaust pipe extends Out of the middle and upper sidewall of the explosion venting tank; on the top surface of the explosion venting tank body, an explosion venting pipe is provided, which communicates with the explosion venting tank, and the mouth of the explosion venting pipe is provided with a blasting The bursting disc is clamped by a clamp, and the bottom side wall of the explosion venting tank is provided with a water inlet valve and a drain valve, and the bottom of the explosion venting tank communicates with the bottom of the fire arresting tank through the water inlet and outlet pipes; A water level gauge is arranged on the outer wall of the cupping tank. Under normal transportation conditions, flammable and explosive gases flow from the intake pipe to the exhaust pipe through the fire arresting and explosion venting device. When the gas in the exhaust pipe explodes or burns, the shock wave generated by the explosion releases the explosion pressure through the explosion venting plate; at the same time, the explosion The generated sparks are sealed with water to achieve the purpose of fire resistance, so that the explosion or combustion will not be transmitted to the intake pipe, and finally achieve the purpose of protecting the intake end delivery pipeline and auxiliary equipment.

In order to make the utility model have the functions of automatic water replenishment and water release, ensure that the water level is kept within the normal working range meeting the requirements of fire resistance, and have an alarm function, a water level controller is provided at the connection between the inlet and outlet water pipes and the explosion-venting tank. The water level controller includes a water level sensor and a controller, and the controller is connected with a water inlet valve and a water discharge valve.

The above-mentioned air outlet pipe is connected to the explosion-venting tank through a flange, and a copper mesh is arranged between the two flanges. The copper mesh can block the flame or spark generated by the explosion, so that the flame or spark entering the flame arrester It is very small, which is beneficial to increase the fire resistance effect.

Since a gas column will be formed when a large amount of gas passes through the water seal, the water seal will lose its fire resistance. Therefore, a metal mesh is installed above the liquid surface of the sealing water in the fire resistance tank to prevent the generation of water column.

Beneficial effects: the utility model combines the functions of fire retardant and explosion venting together, so that the function of the product is improved; and the utility model is provided with a water level control device and a compensation device, which realizes automatic monitoring and real-time automatic replenishment of sealing water, Make sure the fire stop is reliable.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a view along A-A direction in Fig. 1 .

Detailed ways

The utility model is further described below in conjunction with accompanying drawing and embodiment:

As shown in Figure 1 and Figure 2, the utility model is mainly composed of a flame arrester and an explosion vent. 7, the explosion venting device includes an explosion venting tank 5, an exhaust pipe 11, an explosion venting pipe 2, a bursting disc 3, a water inlet valve 10a and a drain valve 10b, one end of the air inlet pipe is located outside the fire arresting tank 1, and the other end Stretch in the flame arresting tank 1, and insert below the liquid level of sealing water 8, the depth of inserting the liquid level is determined according to specific conditions, the metal mesh 12 that is evenly distributed with round holes is arranged on the liquid surface of sealing water, and this metal mesh can be iron Net, for 12 covering on the sealing water, the part outer wall of described inlet pipe 6 inserting tank body is fixed with left support frame 9a, and this left support frame 9a is fixed on the inner wall of fire-stop tank 1, and the outer wall of described fire-stop tank 1 A water level gauge 7 is installed on it, the sealing water 8 can be water, and any other liquid that is incompatible with the gas; the upper part of the fire arresting tank 1 is welded with an outlet pipe 14, and the outlet pipe 14 is welded to the explosion vent The pipes on the upper part of the tank 5 are connected by flanges, and a copper mesh 13 is installed between the two flanges. The upper part of the explosion venting tank 5 is inserted into the exhaust pipe 11, and the mouth of the upper end of the exhaust pipe 11 faces the explosion venting tank. 5, and is supported in the explosion venting tank 5 by the right support body 9b, the lower end nozzle of the exhaust pipe 11 stretches out the middle and upper side wall of the explosion venting tank 5; in the explosion venting tank 5 The top surface of the tank body is provided with an explosion venting pipe 2, which communicates with the explosion venting tank 5, and the mouth of the explosion venting pipe 2 is provided with a bursting disc 3, which is clamped by a flange 4 A water inlet valve 10a and a water discharge valve 10b are installed on the side wall of the bottom of the detonator 5 .

Further as shown in Figure 1, on the side wall of the bottom of the fire retardant tank 1, there is a water inlet and outlet pipe 15, the water inlet and outlet pipe 15 is connected to one end of the water level sensor 10c, and the other end of the water level sensor 10c is connected to the explosion venting tank 5, and the water level sensor 10c The detected water level signal is transmitted to the controller 10d, and the controller 10d controls the opening and closing of the water inlet valve 10a and the water discharge valve 10b.

The working principle of the utility model is as follows: under normal conveying conditions, combustible and explosive gas passes through the sealing water 8 from the inlet pipe, enters the explosion-venting tank 5 through the outlet pipe 14, and finally enters the delivery end through the exhaust pipe 11, and is taken away by the gas into the The water in the explosion-venting tank 5 condenses and gathers in the explosion-venting tank 5 in the explosion-venting tank 5. Since the bottoms of the fire-stopping tank 1 and the explosion-venting tank 5 are connected, this part flows back into the fire-stopping tank 1 at last; When the gas in the exhaust pipe explodes or burns, the shock wave generated by the explosion will break through the explosion venting sheet. Since the explosion venting pipe is exposed in the atmosphere, the sparks and heat generated by the explosion will be quickly dissipated in the atmosphere to achieve the effect of explosion venting. Purpose, at the same time, the sparks produced by the explosion are first blocked by the copper mesh 13, and part of the flame and sparks are extinguished, and then the flames and sparks enter the sealing water, where they are completely extinguished to achieve the purpose of fire resistance, so that the explosion or combustion does not It will be transmitted to the intake pipe pipeline, and finally achieve the purpose of protecting the intake end delivery pipeline and ancillary equipment.

Claims (6)

1. water-sealed type back-fire relief explosion venting device, comprise flame trap, this flame trap is by back-fire relief jar (1), suction tude (6), steam outlet pipe (14), sealing water (8) and turnover water pipe (15) are formed, described suction tude (6) one ends are positioned at outside the back-fire relief jar (1), the other end stretches in the back-fire relief jar (1), and insert described sealing water (8) below the liquid level, it is characterized in that: described back-fire relief jar (1) is connected with the venting of dust explosion jar (5) that communicates with it by the steam outlet pipe on the sidewall (14), in this venting of dust explosion jar (5) outlet pipe (11) is installed, the mouth of pipe of this outlet pipe (11) upper end is towards the top of venting of dust explosion jar (5), and be supported in the described venting of dust explosion jar (5) by right support (9b), the lower end mouth of pipe of this outlet pipe (11) stretches out the middle and upper part sidewall of described venting of dust explosion jar (5); End face at described venting of dust explosion jar (5) tank body is provided with detonating fusee (2), this detonating fusee (2) communicates with venting of dust explosion jar (5), the mouth of pipe of described detonating fusee (2) is provided with rupture disk (3), this rupture disk (3) is by retaining member (4) clamping, described venting of dust explosion jar (5) bottom sidewall is provided with inlet valve (10a) and drain valve (10b), and the bottom of described venting of dust explosion jar (5) is communicated with described back-fire relief jar (1) bottom by turnover water pipe (15); Described back-fire relief jar (1) outer wall is provided with fluviograph (7).

2. water-sealed type back-fire relief explosion venting device according to claim 1, it is characterized in that: described turnover water pipe (15) is provided with level sensor (10c) with venting of dust explosion jar (5) connecting part, this level sensor (10c) is connected with controller (10d), and this controller (10d) links with described inlet valve (10a) and drain valve (10b) simultaneously.

3. water-sealed type back-fire relief explosion venting device according to claim 1 is characterized in that: described steam outlet pipe (14) is connected by flange with described venting of dust explosion jar (5), is provided with copper mesh (13) between two flange plates.

4. water-sealed type back-fire relief explosion venting device according to claim 1 is characterized in that: described retaining member (4) is a flange plate.

5. water-sealed type back-fire relief explosion venting device according to claim 1 is characterized in that: sealing water (8) liquid level top is provided with wire netting (12) in the described back-fire relief jar (1).

6. water-sealed type back-fire relief explosion venting device according to claim 1 is characterized in that: the left support (9a) of described suction tude (6) bottom on being fixed on back-fire relief jar (1) inwall is supported in the described back-fire relief jar (1).

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