CN212730773U - Automatic abluent gas dry-type back-fire relief device - Google Patents

Abstract

The utility model provides an automatic abluent gas dry-type back-fire relief device, relate to back-fire relief device technical field, which comprises a housin, dismantle the window, the filter screen, overflow dirty groove and cleaning system, the both ends of casing are air inlet and gas outlet respectively, be provided with the filter screen more than 2 layers between air inlet and the gas outlet, the both sides of filter screen or leeward side are provided with the mount, still be provided with a plurality of dismantlement windows on the casing and dismantle the window flange, cleaning system includes the water pump, the water pipe, pipe connection ware, shower nozzle and nozzle connector, the water pump leads to pipe and the shower nozzle that pipe connection ware set up on to the filter screen supplies water, the shower nozzle is arranged to the middle part water spray along the outer lane border of filter screen, be provided with the overflow dirty groove on the casing, the valve discharge of. The device solves the technical problem that the fire arrestor filter screen needs to be disassembled for cleaning, and has the advantages of high efficiency and safety.

Description

Automatic abluent gas dry-type back-fire relief device

Technical Field

The utility model belongs to the technical field of back-fire relief device technique and specifically relates to a gas dry-type back-fire relief device that can self-cleaning.

Background

The high gas mine is widely distributed, and with the national importance on coal mine safety and environmental protection and the development and utilization of clean energy, the development and utilization of gas in the high gas mine become an important component of the current clean energy. The main components of the gas are alkanes, most of which are methane, and a small part of ethane, propane and butane, and also contain small amounts of chemical substances such as: hydrogen sulfide, carbon dioxide, nitrogen, water, and the like. In general, gas is present in coal and rock formations in the form of gas. After being extracted, the high-concentration gas is directly used as fuel to be supplied to factories and communities as energy for production and life. The low-concentration gas is compressed and used as a raw material to generate power. Methane in the gas is a greenhouse gas, and the greenhouse effect of the methane is 21 times that of carbon dioxide, so that the reutilization of the gas not only can improve the economic benefit, but also can play a role in protecting the environment.

The gas is generally extracted from the underground to a pump station through a pipeline in a mechanical negative pressure extraction mode, and then is conveyed to a gas power station through the pipeline by the gas pump station. Because the gas is attached to the coal bed and the rock stratum, the gas contains a large amount of suspended matters such as coal bed, dust and the like in the extraction and transportation process. Especially, in the pipeline from a gas pump station to a gas power station, in order to ensure the safety of gas power generation, a fire-retardant safety device needs to be added in a conveying pipeline according to the industrial standard.

At present, a dry fire retardant device and a water source fire retardant explosion venting device are commonly used in gas energy utilization. However, since the gas power station has certain requirements on the gas concentration and pressure, in order to avoid the water from generating certain resistance to the gas transmission process, a water source fire-retarding explosion-venting device is not easy to be adopted under general conditions. The dry-type back-fire relief device that often adopts large-scale flange casing to add the filter screen and constitutes, because the gas pipeline has certain requirement to the leakproofness, this kind of dry-type back-fire relief device often links at dry-type back-fire relief device and gas input port and delivery outlet link in-process and use a large amount of nuts, dismantles the nut and must consume 8 a plurality of hours at monthly maintenance in-process. The fire-retardant filter screen is arranged in the shell of the fire-retardant device, and the fire-retardant device can be disassembled and cleaned only by disassembling the fire-retardant device from the gas conveying pipeline after stopping gas transmission and disconnecting the pipeline when the device is disassembled and washed or replaced. Meanwhile, two layers of filter screens which are in close contact with the shell are laid in the dry flame arrester shell, and since gas contains a large amount of suspended dust, the gas is extremely easy to accumulate on the filter screens and is gradually compacted, gas pipeline gas conveying is unsmooth, operation of a gas pump station extraction pump is affected in severe cases, coal mine safety production is affected, the filter screens are difficult to clean, and three or four people's manpower is consumed to clean. A shovel has to be used for cleaning a little bit in the cleaning process, and then water is used for cleaning.

Because the cleaning of the dry flame arrestor filter screen requires disassembly and is not regularly cleaned automatically, a flame arrestor that can clean the dry flame arrestor periodically is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the spark arrester filter screen washing needs to be dismantled, provide high-efficient, safe, spark arrester that can regularly clear up, the utility model provides an automatic abluent gas dry-type back-fire relief device, concrete technical scheme is as follows.

An automatic cleaning gas dry-type fire retardant device comprises a shell, a disassembly window, a filter screen and an overflow dirt groove, wherein an air inlet and an air outlet are respectively arranged at two ends of the shell, more than 2 layers of filter screens are arranged between the air inlet and the air outlet, the cleaning device also comprises a cleaning system, the cleaning system is provided with a water pump, a water pipe, a pipeline connector, a spray head and a spray head connector, the water pump supplies water to the spray head arranged on the filter screen through the water pipe and the pipeline connector, the spray heads are respectively arranged on the spray head connector arranged along the boundary of the outer ring of the filter screen, and the spray heads all; the shell is provided with a sewage overflow groove, and the cleaned sewage is discharged through a valve below the sewage overflow groove; and fixing frames are arranged on two sides or the leeward side of the filter screen.

Preferably, the housing is further provided with a plurality of detaching windows and detaching window flanges.

Preferably, the holder is in a grid or a rice grid shape.

It is also preferred that the water pipe enters the housing from the air outlet side of the housing, the water pipe is fixed to the housing by welding, and a valve is provided on the water pipe outside the housing.

Preferably, the maximum water pressure to which the spray head is subjected is 10 Mpa.

It is also preferable that the filter screen and the fixing frame are fixed by a clamping groove pin, and the fixing frame and the shell are fixed by welding.

The utility model has the advantages that the gas dry fire-retardant device can realize self cleaning, a cleaning system is arranged, water is pumped by a water pump, a spray head is used for cleaning a filter screen, and the cleaned sewage is directly discharged through a sewage overflow groove to realize one-time cleaning; the cleaning consumes less time and does not need to manually disassemble the flame arrester; because mine gas usually contains coal dust during extraction, a filter screen is easy to be dirty and blocked, and normal gas transmission can be ensured only by frequent cleaning; the fixing frames are arranged on the two sides of the filter screen, so that the damage of the air volume to the filter screen can be avoided; in addition, the device also has the advantages of high efficiency, safety and capability of being cleaned regularly.

Drawings

FIG. 1 is a schematic top view of a self-cleaning gas dry firestop device;

FIG. 2 is a schematic cross-sectional view of a self-cleaning gas dry firestop device;

in the figure: 1-an air inlet; 2-a connecting flange; 3-disassembling the window; 4-a flange cover; 5-air outlet; 6-a spray head; 7-a water pipe; 8-a flange groove; 9-filtering the screen; 10-a sewage overflow tank; 11-water pump.

Detailed Description

Referring to fig. 1 to 2, the present invention provides a dry type self-cleaning gas fire retardant device, which has the following embodiments.

The utility model provides an automatic abluent gas dry-type back-fire relief device specifically includes the casing, dismantles window 3, filter screen 9 and overflow dirty groove 10, and the both ends of casing are air inlet 1 and gas outlet 5 respectively, are provided with filter screen 9 more than 2 layers between air inlet 1 and the gas outlet 5. Automatic abluent gas dry-type back-fire relief device still includes cleaning system, and cleaning system has water pump 11, water pipe 7, pipe connector, shower nozzle 6 and shower nozzle connector, and water pump 11 supplies water to the shower nozzle 6 that sets up on the filter screen 9 through water pipe 7 and pipe connector, and shower nozzle 6 is installed respectively on the shower nozzle connector of arranging along the outer lane border of filter screen 9, and shower nozzle 6 all sprays water to the filter screen middle part. Be provided with overflow dirty groove 10 on the casing, the valve discharge of sewage through overflow dirty groove 10 below after the clearance, overflow dirty groove 10 sets up in 1 one side of air inlet of casing, and overflow dirty groove 10 department can also set up the sewage memory, when wasing filter screen 9, abluent sewage flows into the sewage memory, installs the valve simultaneously in the bottom of overflow dirty groove, in time discharges sewage, closes when not needing to wash, prevents that gas from spilling over. The both sides of filter screen 9 or leeward side are provided with the mount, still are provided with a plurality of dismantlement windows 3 on the casing and dismantle the window flange, set up the dismantlement window blind flange 4 rather than the matching on the dismantlement window, dismantle window 3 and dismantle window blind flange 4 and pass through flange bolt and connect.

The mount is the check formula or rice check formula, utilizes the mount can avoid the filter screen at the gas transportation in-process, because the coal dust of accumulation on the filter screen, leads to the problem that resistance grow filter screen deformation damage. In the self-cleaning gas dry fire-retardant device, the number of the filter screens 9 is selected according to factors such as gas drainage, pressure and the like, 2 or more filter screens are arranged to filter sundries and related dust in gas under normal conditions, the mesh number of the filter screens is adjustable according to production conditions, and the shape and the size of the filter screens 9 are matched with the inner diameter of a shell of the dry fire-retardant device and are in close contact with the periphery of the shell. Because gas is through pressure transmission, in order to increase the stability of filter screen, need arrange the mount in the front and back both sides of filter screen, according to the size of filter screen, this kind of mount can set to "nine palace check" pattern and "rice style of calligraphy" pattern, the mid portion at the filter screen sets up the fixed pin draw-in groove, thereby the filter screen of being convenient for is fixed, opposite side mount beading is in the casing of dry-type back-fire relief device, set up the draw-in groove pin in the intermediate position, it is direct to fix with the filter screen draw-in groove, it is firm to ensure.

Furthermore, the shell can be changed into one part from two parts, nuts are prevented from being used for fastening, grooves are formed in the top of the shell, a flange cover is machined and manufactured, the flange cover is opened when the filter screen is replaced, the flange cover is closed during daily production, the flange cover ensures the tightness after fastening, and the sealing can be achieved by adding a gasket. Increase at the left and right sides of filter screen and indulge the muscle slide, set up the draw-in groove in the left and right sides of casing, with filter screen disect insertion draw-in groove, increase rings simultaneously on the top of filter screen, conveniently propose the filter screen when being convenient for change the filter screen, the filter screen is evenly arranged, and in order to ensure the filter effect, the number of pieces of filter screen should be more than 5.

A water pipe 7 enters the shell from the air outlet side of the shell, the water pipe is fixed on the shell through welding, a valve is arranged on the water pipe outside the shell, and the maximum water pressure borne by the spray head 6 is 10 Mpa. The water pipe is installed specifically by opening the air outlet end of the shell, connecting the water pipe with the dry fire retardant device through a precision welding technology, arranging a valve at the outer end of the water pipe, closing the water pipe when not being washed, preventing gas from overflowing, and opening the water pipe again during washing; meanwhile, a circle of atomizing nozzles are arranged in the shell of the dry type fire retardant device, the nozzles can bear the pressure of 0-10MPa, the nozzles are connected with a water pipe entering the shell, a water pump 11 is connected with the water pipe 7 through a pipeline connector, and a circle of nozzles are arranged to clean sundries on a filter screen in all directions, so that the design and use requirements are met.

The cleaning system can also comprise an opening at the air outlet end of the shell, a water pipe is connected with the dry fire retardant device through a precision welding technology, and a valve is arranged at the outer end of the water pipe and is in a closed state when not being washed so as to prevent gas from overflowing and is opened again during washing; meanwhile, the rotary disk is arranged in the shell of the dry fire retardant device, the water pipe provides power, the water pipe is divided into two parts in the shell, one part provides rotary power for the rotary disk, the other part is used for cleaning the filter screen, the water pipe is arranged on the rotary disk, and the water pipe can clean the filter screen in an all-around manner, so that the cleaning quality is guaranteed.

The gas dry-type fire retardant device capable of being automatically cleaned is opened within a set time period every day, and the cleaning pipeline is closed in other times, so that the fire retardant device is guaranteed to be in a dry state in most of time. The automatic cleaning water source is derived from a standby large bucket in a gas power station, the small water pump is placed in the automatic cleaning water source, a water pump switch is arranged, a timing module is added, the dry-type fire retardant device can be automatically cleaned regularly, and the water pump can be used by a self-contained power supply or an external power supply.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims (6)

1. An automatic cleaning gas dry-type fire retardant device comprises a shell, a disassembly window, a filter screen and an overflow dirt groove, wherein an air inlet and an air outlet are respectively arranged at two ends of the shell, more than 2 layers of filter screens are arranged between the air inlet and the air outlet, and the device is characterized by also comprising a cleaning system, wherein the cleaning system is provided with a water pump, a water pipe, a pipeline connector, a spray head and a spray head connector; the shell is provided with a sewage overflow groove, and the cleaned sewage is discharged through a valve below the sewage overflow groove; and fixing frames are arranged on two sides or the leeward side of the filter screen.

2. A self-cleaning gas dry firestop device as claimed in claim 1, wherein said housing is further provided with a plurality of removable windows and removable window flanges.

3. A self-cleaning gas dry fire barrier as claimed in claim 1, wherein the holder is of a tessellated or tessellated form.

4. A self-cleaning gas dry fire barrier as claimed in any one of claims 1 to 3, wherein the water pipe enters the housing from the outlet side of the housing, the water pipe is secured to the housing by welding, and a valve is provided in the water pipe outside the housing.

5. A self-cleaning gas dry fire barrier as claimed in claim 4, wherein the sprinkler head is subjected to a maximum water pressure of 10 MPa.

6. The self-cleaning gas dry type fire retardant device as claimed in claim 1 or 3, wherein the filter screen and the fixing frame are fixed by a slot pin, and the fixing frame and the housing are fixed by welding.

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