CN201399168Y - A new gas pipeline flame arrester - Google Patents

Abstract

The utility model discloses a novel gas pipeline flame arrester, which comprises a shell, the shell is provided with a gas inlet and a gas outlet, and a fire retardant layer arranged on the cross section of the gas passage in the shell, the fire retardant layer consists of Composed of metal fiber fabric or metal fiber sintered felt, a new type of gas pipeline flame arrester with the structure of the utility model, the cross section of the gas channel in the shell is provided with a fire-retardant layer composed of metal fiber fabric or metal fiber sintered felt, metal fiber fabric Or metal fiber sintered felt does not affect the flow direction of gas transportation, and metal fiber fabric or metal fiber sintered felt has good fire resistance and heat absorption performance, when the flame caused by gas combustion or other reasons passes through the fire barrier layer , the metal fiber fabric or metal fiber sintered felt quickly cools the high-temperature gas to the flame extinguishing temperature, so that the flame is automatically extinguished, which improves the safety of gas pipeline network transportation, and the entire flame arrester has a simple structure and low cost.

Description

A new gas pipeline flame arrester

technical field

The utility model relates to a flame arrester, in particular to a novel gas pipeline flame arrester which is mainly used in coal mine gas pipelines and can also be used in other combustible gas pipelines.

Background technique

At present, the gas pumped out of most mines is transported by pipeline, and the output end of the pipeline is connected to the user. The gas in the pipeline is easy to burn and explode when heated, which means there are certain safety hazards, especially for low-concentration gas that is too low in pressure and mixed with air. , the output gas combustion has a higher probability of tempering. In order to prevent the backfire caused by the output gas combustion or flames caused by other reasons from propagating in the gas pipeline, and to prevent the occurrence of gas combustion and explosion in the pipeline, a flame arrester is usually installed in the pipeline. The old-fashioned metal mesh flame arrester that is still in use has a simple and practical structure, but its fire-retardant performance is not good; the newer corrugated plate flame arrester has good fire-retardant performance, but the stainless steel corrugated plate has a small thermal conductivity and poor heat dissipation. improved fire resistance performance.

Therefore, it is necessary to develop a new type of flame arrester for gas pipelines. The flame arrester does not change the flow direction of the gas, and can quickly extinguish the flame caused by the backfire or other reasons caused by the gas combustion when it passes through the flame arrester, improving the quality of the gas pipeline network. The safety and reliability of gas transportation require simple structure, easy manufacture and low cost.

Utility model content

In view of this, the utility model proposes a new type of gas pipeline flame arrester, the flame arrester uses metal fiber fabric or metal fiber sintered felt as the fire resistance layer, and uses metal fiber fabric or metal fiber sintered felt labyrinth pore structure and metal fiber excellent Excellent heat insulation and heat conduction performance, which not only improves the fire resistance performance of the flame arrester, but also enables the flame caused by gas combustion to backfire or other reasons to quickly extinguish the fire when it passes through the flame arrester, which improves the safety of gas pipeline network transportation The utility model has the advantages of simple structure, easy manufacture and low cost.

A novel gas pipeline flame arrester provided by the utility model includes a shell, the shell is provided with a gas inlet and a gas outlet, and also includes a fire retardant layer arranged on the cross section of the gas passage in the shell, and the fire retardant layer is composed of Metal fiber fabric or metal fiber sintered felt.

Further, it also includes a support plate fixedly arranged in the housing, air flow holes are arranged on the support plate, and the fire-resistant layer is fixedly arranged on both sides of the support plate;

Further, the casing is a reducing pipe whose diameter gradually decreases from the middle to both ends, and the fire-resistant layer is arranged on the cross-section of the middle section of the reducing pipe;

Further, the housing includes a short-circuit I and a short-circuit II, the short-circuit I is provided with a flange I, and the short-circuit II is provided with a flange II, and the fire-resistant layer is arranged between the end surface of the short-circuit I and the end surface of the short-circuit II Between, and through the flange I and flange II and short I and II fixed connection;

Further, the support plate is an air distribution plate.

The beneficial effects of the utility model are: the gas pipeline flame arrester with the structure of the utility model, the cross section of the gas pipeline in the casing is provided with a fire-retardant layer composed of metal fiber fabric or metal fiber sintered felt, metal fiber fabric or metal fiber sintered felt It does not affect the flow direction of gas transportation, and the metal fiber fabric or metal fiber sintered felt has good fire resistance and heat absorption performance. Or the metal fiber sintered felt quickly cools the high-temperature gas to the flame extinguishing temperature, so that the flame is automatically extinguished, which improves the safety of gas transported by the gas pipe network, and the entire flame arrester has a simple structure and low manufacturing cost.

Description of drawings

The utility model is further described in detail with the following structural drawings and specific embodiments.

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

Figure 2 is a schematic structural view of the support plate.

Detailed ways

Fig. 1 is a structural schematic diagram of the utility model, and Fig. 2 is a structural schematic diagram of a support plate, as shown in the figure: a novel gas pipeline flame arrester includes a shell 3 with a gas inlet and a gas outlet, a fire-blocking layer 1 and A support plate 2 with a plurality of air flow holes 10, the fire-resistant layer 1 is composed of metal fiber fabric or metal fiber sintered felt, and the shell 3 of this embodiment is a reducing tube whose diameter gradually decreases from the middle to both ends , the reducing pipe is composed of a short-circuit I8 and a short-circuit II9, the short-circuit I8 is provided with a flange I4, the short-circuit II9 is provided with a flange II7, the fire-resistant layer 1 is fixedly arranged on both sides of the support plate 2, and the support plate 2 Clamped between flange I4 and flange II7, the contact between the support plate 2 and flange I4 and flange II7 is provided with a sealing gasket 5, and the bolts are inserted into the bolt holes of flange I4 and flange II7 , tighten the nuts, clamp the support plate 2, the other ends of the short-circuit I8 and the short-circuit II9 are respectively provided with flanges 6, and the two flanges 6 are connected with the gas pipeline for transportation.

In this embodiment, the support plate 2 adopts an air distribution plate, and the two sides of the air distribution plate are in a concave structure. Solder fixed.

The device of the present utility model is generally installed near the user's use end. Although the fire retardant layer 1 and the air distribution plate have a certain influence on the passing gas flow rate, the diameter of the middle section of the variable diameter pipe is large and the air flow holes 10 are many, which will not affect the gas flow. When the backfire caused by gas combustion or the flame caused by other reasons passes through the fire-resistant layer 1, the metal fiber fabric or metal fiber sintered felt will quickly cool the high-temperature gas to the flame extinguishing temperature, so that the flame will be automatically extinguished, and the gas pipeline network will increase the efficiency of gas transportation. safety.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (5)

1. novel gas tube spark arrester, comprise housing (3), described housing (3) is provided with gas import and gas export, it is characterized in that: also comprise the flame retardant bed (1) that is arranged on the interior gas channel cross section of housing (3), described flame retardant bed (1) is made up of metal fibre interlacement or metallic fiber sintered felt.

2, a kind of novel gas tube spark arrester according to claim 1, it is characterized in that: also comprise the gripper shoe (2) that is fixedly installed in the housing (3), air-flow through hole (10) is set on the gripper shoe (2), and flame retardant bed (1) is fixedly installed on the two sides of gripper shoe (2).

3. a kind of novel gas tube spark arrester according to claim 1 and 2 is characterized in that: to the diminishing reducer pipe of two ends diameter, flame retardant bed (1) was arranged on the cross section of reducer pipe interlude in the middle of described housing (3) was served as reasons.

4, a kind of novel gas tube spark arrester according to claim 3, it is characterized in that: described housing (3) comprises short circuit I (8) and short circuit II (9), short circuit I (8) is provided with flange I (4), short circuit II (9) is provided with flange II (7), described flame retardant bed (1) is arranged between the end face of the end face of short circuit I (8) and short circuit II (9), and fixedlys connected with short circuit II (9) with short circuit I (8) with flange II (7) by flange I (4).

5, a kind of novel gas tube spark arrester according to claim 4 is characterized in that: described gripper shoe (2) is an air distribution plate.

Images