阅读说明：本技术 一种间歇充气式可燃气系统 (Intermittent inflatable combustible gas system ) 是由 刘明真 于 2021-09-22 设计创作，主要内容包括：本发明公开的是一种间歇充气式可燃气系统,包括入户管道、单向闸阀、燃气表、增压泵、止回阀、储气罐、单向闸阀、减压阀和用气设备,入户管道的输入端与燃气管道相连接,燃气管道与供气站相连接,供气端内设置有余气回抽组件,单向闸阀的一端与入户管道连接,另一端与燃气表的输入端连接,燃气表的输出端与增压泵的输入端相连接,止回阀和单向闸阀分别装设在储气罐的进气端和出气端,止回阀和单向闸阀可防止余气回抽时产生的倒流,增压泵的输出端与止回阀相连接。本发明每天1次或多次供气,管道内大部分时间无燃气,降低因管道内持续存有燃气形成链锁反应导致的爆燃事故,提高燃气系统的安全性。(The invention discloses an intermittent inflatable combustible gas system, which comprises a household pipeline, a one-way gate valve, a gas meter, a booster pump, a check valve, a gas storage tank, a one-way gate valve, a pressure reducing valve and gas using equipment, wherein the input end of the household pipeline is connected with the gas pipeline, the gas pipeline is connected with a gas supply station, a residual gas pumping-back component is arranged in the gas supply end, one end of the one-way gate valve is connected with the household pipeline, the other end of the one-way gate valve is connected with the input end of the gas meter, the output end of the gas meter is connected with the input end of the booster pump, the check valve and the one-way gate valve are respectively arranged at the gas inlet end and the gas outlet end of the gas storage tank, the check valve and the one-way gate valve can prevent the residual gas from flowing backwards during residual gas pumping, and the output end of the booster pump is connected with the check valve. The invention supplies gas for 1 or more times every day, and most of the time in the pipeline is free of gas, thereby reducing deflagration accidents caused by chain reaction formed by the continuous existence of gas in the pipeline and improving the safety of a gas system.)

1. An intermittent inflatable combustible gas system is characterized in that: the gas supply station is internally provided with a residual gas pumping-back assembly which is used for pumping back and storing residual gas in the gas pipeline; one end of the one-way gate valve with the pipe connection of registering one's residence, the other end with the input of gas table is connected, the output of this gas table with the input of booster pump is connected, check valve and one-way gate valve are installed respectively the inlet end of gas holder with give vent to anger the end, the check valve is used for preventing the refluence that produces when residual gas pumpback, the output of booster pump with the check valve is connected for fill with the gas pressurization store up in the gas holder, the input of relief pressure valve with one-way gate valve connects, the output with gas appliances are connected.

2. An intermittent inflatable combustible gas system according to claim 1, wherein: the air storage tank is any one of a low-pressure air storage tank and a medium-pressure air storage tank.

3. An intermittent inflatable combustible gas system according to claim 1, wherein: the gas supply station adopts 1 or many times of short time gas feed setting every day, just most time does not persist the gas in the gas pipeline.

4. An intermittent inflatable combustible gas system according to claim 1, wherein: the gas pipeline adopts a medium-pressure inlet, and the typical pressure of the gas pipeline is 0.1 MPa.

5. An intermittent inflatable combustible gas system according to claim 1, wherein: the gas pipeline is a natural gas pipeline or a liquefied petroleum gas pipeline.

Technical Field

The invention relates to the field of design and installation of a gas pipe network structure, in particular to an intermittent inflatable combustible gas system.

Background

The combustible gas pipeline system who extensively uses widely at present, because have the combustible gas of continuous transmission in the pipeline, in case a certain node takes place the gas and reveals and ignite, arouse the chain reaction very easily, lead to disastrous accidents such as very serious explosion.

This technical scheme is through carrying out institutional advancement to current gas pipeline network, 1 or many times short time air feed each day, and most time does not have the gas in the pipeline, and greatly reduced has the deflagration accident that the gas formed the chain lock reaction and leads to because of continuously having in the pipeline, improves the security of gas pipe network system.

Disclosure of Invention

The invention discloses an intermittent inflatable combustible gas system, which mainly aims to overcome the defects and shortcomings in the prior art.

The technical scheme adopted by the invention is as follows:

an intermittent inflatable combustible gas system comprises a household pipeline, a one-way gate valve, a gas meter, a booster pump, a check valve, a gas storage tank, a one-way gate valve, a pressure reducing valve and gas using equipment, wherein the input end of the household pipeline is connected with the gas pipeline, the gas pipeline is connected with a gas supply station of the gas system, a residual gas back-pumping assembly is arranged in the gas supply station, and the residual gas back-pumping assembly is used for back-pumping and storing residual gas in the gas pipeline; one end of the one-way gate valve with the pipe connection of registering one's residence, the other end with the input of gas table is connected, the output of this gas table with the input of booster pump is connected, check valve and one-way gate valve are installed respectively the inlet end of gas holder with give vent to anger the end, the refluence that produces when check valve and one-way gate valve can prevent that residual gas pumpback, the output of booster pump with the check valve is connected for fill with the gas pressurization and store up in the gas holder, the input of relief pressure valve with one-way gate valve connects, the output with gas appliances are connected.

Further, the gas tank may be any one of a low pressure gas tank and a medium pressure gas tank.

Furthermore, a safety valve, a pressure gauge and a drain valve are arranged on the air storage tank.

Furthermore, the gas storage tank is 20 liters of 1MPa gas storage tank or 30 liters of 2MPa gas storage tank or any one of other medium-low pressure and small-capacity gas storage tanks, the gas storage tank is 20 liters of 1MPa gas storage tank, the gas storage capacity of the gas storage tank is 0.2 cubic meter, the gas storage tank is 30 liters of 2MPa gas storage tank, and the gas storage capacity of the gas storage tank is 0.6 cubic meter, so that the capacity and the pressure of the gas storage tank can be determined according to the gas consumption.

Furthermore, the gas supply station adopts 1 or many times of short time gas supply setting every day, and most of the time does not remain the gas in the gas pipeline.

Furthermore, the gas pipeline adopts a medium-pressure inlet, and the typical pressure of the gas pipeline is 0.1 MPa.

Furthermore, the gas pipeline is a natural gas pipeline or a liquefied petroleum gas pipeline.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. the invention supplies gas for 1 or more times every day in a short time, no gas exists in the pipeline for most of the time, each user can fill the gas storage tank with enough gas for 1 ton of meal to 1-3 days, the deflagration accident caused by chain reaction formed by the continuous gas stored in the pipeline is greatly reduced, and the safety of a gas system is improved.

2. The invention can realize automatic inflation at the user end by using the inflatable air storage tank.

3. The gas storage tank at the user end of the invention has small capacity, low pressure and small safety risk, can not generate overlarge explosive force, and improves the safety of a gas system.

4. The invention can effectively block the chain lock explosion of the combustible gas by pumping back the residual gas after the gas supply is finished, thereby solving the safety problem of the existing gas system.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, an intermittent inflatable type combustible gas system comprises a gas supply station 1, a gas pipeline 2, a service pipeline 3, a one-way gate valve 4, a gas meter 5, a booster pump 6, a check valve 7, a gas storage tank 8, a one-way gate valve 9, a pressure reducing valve 10 and a gas using device 11. The gas supply station 1 of the gas system is connected with a gas pipeline 2, the input end of the household pipeline 3 is connected with the gas pipeline 2, and a residual gas pumping-back assembly is arranged in the gas supply station 1 and is used for pumping back and storing residual gas in the gas pipeline; one end of one-way gate valve 4 with pipeline 3 of registering one's residence is connected, the other end with the input of gas table 5 is connected, this gas table 5 the output with the input of booster pump 6 is connected, install respectively check valve 7 and one-way gate valve 9 the inlet end of gas holder 8 with give vent to anger the end, the refluence that produces when check valve 7 is used for preventing the residual gas pumpback, the output of booster pump 6 with check valve 7 is connected for fill with the gas pressurization and store up in the gas holder 8, the input of relief pressure valve 10 with one-way gate valve 9 is connected, the output with gas appliances 11 is connected.

Further, the gas tank 8 may be either a low pressure gas tank or a medium pressure gas tank.

Further, the gas storage tank 8 is provided with a safety valve 81, a pressure gauge 82 and a drain valve 83.

Furthermore, the gas storage tank is 20 liters of 1MPa gas storage tank or 30 liters of 2MPa gas storage tank or any one of other medium-low pressure and small-capacity gas storage tanks, the gas storage tank 8 is 20 liters of 1MPa gas storage tank, the gas storage capacity of the gas storage tank is 0.2 cubic meter, the gas storage tank 8 is 30 liters of 2MPa gas storage tank, and the gas storage capacity of the gas storage tank is 0.6 cubic meter, so that the capacity and the pressure of the gas storage tank are determined according to the gas consumption.

Furthermore, the gas supply station 1 adopts a short-time gas supply setting of 1 time or more per day, and most of the time in the gas pipeline 2 does not retain gas.

Furthermore, the gas pipeline 2 adopts a medium-pressure inlet, and the typical pressure is 0.1 MPa.

Furthermore, the gas pipeline 2 is a natural gas pipeline or a liquefied petroleum gas pipeline.

The use process of the invention is as follows:

the household pipeline only transmits combustible gas for a short time every day, and each user is provided with an air storage tank capable of automatically inflating. When the pressure in the house-entering pipeline is enough, the air is automatically inflated. When the pressure in the gas tank reaches or approaches the gas pressure in the pipeline, the valve is automatically closed. The capacity of the automatic inflating tank can be selected to contain the gas consumption for one meal or 1-3 days, or other gas tanks with limited capacity. The gas supply pipe network is when the air feed is ended at every turn, manage to find time with the residual gas in the gas pipeline, and the pipeline of registering one's residence does not have the gas in most time every day like this, and on the other hand the capacity of gas jar is less relatively, even a certain local gas is revealed to catch fire, because the capacity of gas jar is little, can not produce too big explosive force, simultaneously, because most time does not have the gas in the pipeline, consequently can not take place the chain reaction generally to improve gas system's security greatly.

When the automatic inflation tank cannot be fully filled at one time, the automatic inflation tank can automatically continue to inflate at the next air supply time until the automatic inflation tank is fully filled and automatically stops. When the pressure of the automatic inflation tank is reduced, the automatic inflation is carried out again.

The intermittent inflatable combustible gas system of the scheme is connected to gas equipment (a gas stove and the like) through a service pipeline, a one-way gate valve, a gas meter, a booster pump, a check valve (a one-way valve), a gas storage tank, a gas gate valve and a pressure reducing valve. When the pressure of the house is 0.1Mpa (1 atmosphere), the pressure difference between the inside and the outside of the pipeline is close to 0, and the leakage is not easy to generate. Two check valves are used to prevent a backflow phenomenon from occurring when the gas supply line withdraws the surplus gas. The gas storage tank adopts a low-pressure or medium-pressure gaseous storage mode, so that the gas can be conveniently inflated in a household environment. If a 20L 1MPa air storage tank is used, the air storage capacity is 0.2 cubic meter, and the rice can be used for cooking in ordinary families; if a 30L 2MPa gas storage tank is used, the gas storage capacity is 0.6 cubic meter, and the gas storage tank can be used by ordinary families for one day, and so on.

The supercharging coefficient of the booster pump is selected according to the pressure of the gas storage tank and the pressure of the household pipeline, and if the pressure of the gas storage tank is 1MPa and the pressure of the household pipeline is 0.1MPa, the supercharging coefficient is selected to be 10; if the pressure of the gas storage tank is 3MPa and the pressure of the household pipeline is 0.2MPa, the pressure increasing coefficient is 15, and the rest can be done in the same way.

The air supply frequency per day can be determined according to the capacity of the air storage tank arranged in the system, if the air storage tank with the consumption more than one day is generally arranged, the air supply is only required to be carried out once per day, and the air supply is safer at night; if the air storage tank can not provide the air consumption for one day, the air can be supplied for a plurality of times. The gas supply duration is determined according to the time that the gas pipeline end user is filled with 1 tank of gas. The capacity and pressure of the gas storage tank can be increased for large users such as restaurants, dining halls and the like; it is not within the contemplation of the invention that dedicated lines may be used for oversized users, such as boilers or power generation equipment.

The gas supply station of the invention needs to be provided with a device for pumping back the residual gas in the pipeline, and the residual gas in the pipeline is pumped back and stored after the gas supply is finished and is reused in the next gas supply. The equipment can also be equipped to facilitate the maintenance of the pipeline, and the waste of emptying the pipeline is avoided.

As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:

1. the gas system only transmits combustible gas in a short time every day, each user can use the gas storage tank to store the gas amount which can be used for one meal or can be used for 1-3 days and the like, and the gas supply station extracts the residual gas in the gas pipeline through the residual gas back-extraction assembly, so that the chain lock deflagration accident caused by the long-term residual gas in the pipeline is avoided, and the safety of the gas system is improved.

2. The invention can realize automatic inflation at the user end by using the inflatable air storage tank.

3. The gas storage tank at the user end of the invention has small capacity, low pressure and small safety risk, can not generate overlarge explosive force, and improves the safety of a gas system.

4. The invention can effectively block the chain lock of the combustible gas from deflagration and improve the safety of the gas supply system by performing the operation of pumping back the residual gas to the pipeline after the gas supply is finished.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of infringing the present invention.