CN213120111U - Bypass pipeline device of natural gas tunnel kiln combustion system - Google Patents

Abstract

The utility model discloses a natural gas tunnel cave combustion system bypass pipe means, it has solved the problem that the city supplies the natural gas can not directly regard as tunnel cave fuel, its characterized in that: a bypass pipeline device is additionally arranged between a kiln natural gas main pipe and a gas supply station natural gas main pipe, the bypass pipeline device is composed of a bypass main pipe (1) and a bypass standby pipe (2), and the main pipeline for natural gas is used for reducing the pressure of the main natural gas to the pressure suitable for the kiln, stabilizing the pressure and then delivering the pressure to the natural gas main pipe above the kiln by arranging a ball valve, a filter, a pressure gauge, a pressure reducing valve, an electromagnetic valve and the like on the pipeline. Has the advantages of reasonable structure, convenient maintenance, stable pressure reduction, energy conservation, environmental protection and the like, and has wide popularization and application values.

Description

Bypass pipeline device of natural gas tunnel kiln combustion system

Technical Field

The utility model belongs to metallurgical thermal equipment especially relates to a natural gas tunnel cave combustion system bypass pipe device.

Background

The combustion system is a core component of the whole kiln, and directly influences the quality of the product firing. The combustion system is divided into a plurality of main adjusting units, and the natural gas used by each unit is respectively led out from a natural gas main pipeline on the kiln and is sent to each burner of the adjusting unit after passing through a unit manual ball valve and a butterfly valve driven by an electric actuator. Each control unit is provided with an electromagnetic valve, and in the running process of the kiln, if the conditions of power failure, stop of a combustion fan, exceeding of the upper limit and the lower limit of the pressure of a natural gas main pipe and the like are met, the supply of the natural gas of the kiln can be cut off by cutting off the main electromagnetic valve of the natural gas main pipe. The safety device of the combustion system comprises a linkage among a smoke exhaust fan, a combustion-supporting fan and a natural gas main pipe electromagnetic valve, a linkage between an upper limit pressure switch and a lower limit pressure switch and a linkage between a natural gas main pipe electromagnetic valve and an ignition controller and an ignition electromagnetic valve.

At present, most tunnel kilns used by industrial and mining enterprises, particularly refractory material production enterprises, use coal gas as fuel, the coal gas is manufactured by a coal gas producer, the coal gas producer has great air pollution, and the coal gas has the defects of low heat production, insufficient combustion and great pollution during combustion. The natural gas has the advantages of sufficient combustion, high heat productivity, environmental protection and the like, and is increasingly applied to daily production and life along with the gradual enhancement of the quality of life and the environmental awareness of people. Because natural gas belongs to high-pressure fuel gas, the maximum pressure can reach 1MPa, and the pressure of the natural gas used by the tunnel kiln must be reduced to 3-8 KPa, the natural gas directly supplied by a natural gas station cannot be directly used as direct fuel of the tunnel kiln.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a natural gas tunnel cave combustion system bypass pipe device with reasonable structure, convenient maintenance, stable decompression, energy saving and environmental protection for the market.

The technical scheme of the utility model is that: it includes parts such as kiln natural gas is responsible for, combustion-supporting wind pipeline and nozzle, has add bypass pipe device between kiln natural gas is responsible for and the gas supply station natural gas house steward, this bypass pipe device is responsible for and the bypass is equipped with two pipelines of pipe and constitutes, has set gradually first ball valve, first filter, first manometer, first relief pressure valve, second ball valve, second manometer, third ball valve, high limit pressure switch, solenoid valve, diffuse valve and fourth ball valve on being responsible for the bypass. And a first water drain valve, a fifth ball valve, a second filter, a third pressure gauge, a second pressure reducing valve, a sixth ball valve, a seventh ball valve and a second water drain valve are sequentially arranged on the bypass standby pipe. The two ends of the bypass standby pipe are respectively connected with the two ends of the bypass main pipe, a communicating pipe is arranged between the second ball valve of the bypass main pipe and the sixth ball valve of the bypass standby pipe, the air inlet of the bypass main pipe is connected with the natural gas main pipe of the gas supply station, and the air outlet of the bypass main pipe is connected with the kiln natural gas main pipe towards the air port. In order to protect the pipeline valve and the pressure gauge from the influence of backflow of air flow in the kiln when the power is off, the flow direction of the electromagnetic valve is one-way, the electromagnetic valve has a protection function and can protect components such as the pipeline valve and the pressure gauge. The pressure reducing valve is a core component of the device, can reduce the pressure of a natural gas main pipe to the pressure suitable for the kiln, stabilizes the pressure and then sends the pressure to a natural gas main pipe above the kiln, plays a role in reducing and stabilizing the pressure, and ensures the normal production of the kiln.

The utility model has the advantages that: because can make the high-pressure natural gas of natural gas station change into the natural gas that is fit for kiln production needs pressure through the relief pressure valve, make the natural gas can regard as the fuel use of tunnel cave, pipeline valve, manometer can be protected in setting up of one-way solenoid valve the influence of kiln internal gas flow refluence when not receiving the outage, explosion-proof diffusion valve's setting can be guaranteed to have a power failure or break down occasionally when unforeseen, improves personnel operation safety and reduces loss of property. Has the advantages of reasonable structure, convenient maintenance, stable pressure reduction, energy conservation, environmental protection and the like, and has wide popularization and application values.

The present invention will be further explained with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the bypass pipeline structure of the present invention.

In the figure: 1 is the bypass person in charge, 2 is the bypass and is equipped with the pipe, 3 is first ball valve, 4 is first filter, 5 is first manometer, 6 is first relief pressure valve, 7 is the second ball valve, 8 is the second manometer, 9 is the third ball valve, 10 is high limit pressure switch, 11 is the solenoid valve, 12 is the bleed valve, 13 is the fourth ball valve, 14 is the fifth ball valve, 15 is the second filter, 16 is the third manometer, 17 is the second relief pressure valve, 18 is the sixth ball valve, 19 is the seventh ball valve, 20 is the first valve that drains, 21 is the second valve that drains, 22 is communicating pipe.

Detailed Description

As shown in fig. 1, the bypass pipeline device of the natural gas tunnel kiln combustion system comprises a kiln natural gas main pipe, a combustion-supporting air pipeline, a burner and other components, a bypass pipeline device is additionally arranged between the kiln natural gas main pipe and a gas supply station natural gas main pipe, the bypass pipeline device is formed by a bypass main pipe 1 and a bypass standby pipe 2, and a first ball valve 3, a first filter 4, a first pressure gauge 5, a first pressure reducing valve 6, a second ball valve 7, a second pressure gauge 8, a third ball valve 9, a high limit pressure switch 10, an electromagnetic valve 11, a bleeding valve 12 and a fourth ball valve 13 are sequentially arranged on the bypass main pipe. In order to protect the pipeline valve and the pressure gauge from the influence of the reverse flow of the air flow in the kiln when the power is off, the flow direction of the electromagnetic valve 11 is one-way. The bypass standby pipe 2 is sequentially provided with a first water drain valve 20, a fifth ball valve 14, a second filter 15, a third pressure gauge 16, a second pressure reducing valve 17, a sixth ball valve 18, a seventh ball valve 19 and a second water drain valve 21. The two ends of the bypass standby pipe 2 are respectively connected with the two ends of the bypass main pipe 1, a communicating pipe 22 is arranged between the second ball valve 7 of the bypass main pipe and the sixth ball valve 18 of the bypass standby pipe, the air inlet of the bypass main pipe 1 is connected with the natural gas main pipe of the gas supply station, and the air outlet of the bypass main pipe is connected with the air inlet of the kiln natural gas main pipe.

When the utility model is implemented, under the normal production condition, the first ball valve 3 on the bypass main pipe 1 is opened, the natural gas enters the first filter 4 to be filtered, and then impurities are removed, and the first pressure gauge 5 shows the natural gas inlet pressure; the natural gas is depressurized through the first pressure reducing valve 6, the second ball valve 7 and the third ball valve 9 are both in an open state, and the pressure displayed by the second pressure gauge 8 is the natural gas pressure after depressurization. When the third ball valve 9 is in an open state, if the natural gas pressure exceeds the limit, the high limit pressure switch 10 carries out alarm processing. The natural gas after pressure reduction enters an electromagnetic valve 11, the flow direction of the electromagnetic valve is one-way, the electromagnetic valve is opened when being electrified and is automatically closed after being powered off. The bypass standby pipe 2 is closed at this time. When the first ball valve 3, the first filter 4, the first pressure gauge 5, the first pressure reducing valve 6, the second ball valve 7, the second pressure gauge 8, the third ball valve 9 and other components on the main pipe 1 of the bypass have faults and need to be maintained, the fifth ball valve 14, the second filter 15, the third pressure gauge 16, the second pressure reducing valve 17, the sixth ball valve 18 and the seventh ball valve 19 on the standby pipe 2 of the bypass are opened, and the normal production of the kiln is not influenced. The bleed valve 12 is a drain bleed and is activated when servicing the main pipe. The moisture of the natural gas pipeline can be emptied by opening the two water drain valves.

Claims (2)

1. The utility model provides a natural gas tunnel cave combustion system bypass pipe means, it includes that the kiln natural gas is responsible for, combustion-supporting wind pipeline and nozzle, its characterized in that: a bypass pipeline device is additionally arranged between a kiln natural gas main pipe and a gas supply station natural gas main pipe, the bypass pipeline device is composed of a bypass main pipe (1) and a bypass standby pipe (2), and a first ball valve (3), a first filter (4), a first pressure gauge (5), a first pressure reducing valve (6), a second ball valve (7), a second pressure gauge (8), a third ball valve (9), a high limit pressure switch (10), an electromagnetic valve (11), a bleeding valve (12) and a fourth ball valve (13) are sequentially arranged on the bypass main pipe (1); the bypass is equipped with and has set gradually first valve (20) that drains on pipe (2), fifth ball valve (14), second filter (15), third manometer (16), second relief pressure valve (17), sixth ball valve (18), seventh ball valve (19) and second valve (21) that drains, the bypass is equipped with pipe (2) both ends and is responsible for (1) both ends with the bypass respectively and link to each other to being equipped with between pipeline sixth ball valve (18) communicating pipe (22) bypass main pipe second ball valve (7) and bypass, the air inlet that the bypass was responsible for (1) is responsible for with the gas supply station gas house steward and is linked to each other, the gas outlet is responsible for the gas port with the kiln natural gas and is linked to each other.

2. The natural gas tunnel kiln combustion system bypass pipeline device according to claim 1, characterized in that: the flow direction of the electromagnetic valve (11) is one-way, so that a pipeline valve and a pressure gauge are protected from the influence of backflow of air in the kiln when the power is off.

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