阅读说明：本技术 一种可燃液体储罐 (Combustible liquid storage tank ) 是由 宋刚 宋鹏 张雪军 张帅 郭玺威 申晓伟 刘葛君 张云 李腾腾 靳智淏 于 2020-06-18 设计创作，主要内容包括：本发明公开一种可燃液体储罐,包括罐体、泄压阀、气封主管、压力反馈结构、压力调节阀和供气设备,泄压阀设置于罐体的顶部,气封主管的输入端和输出端分别与供气设备和罐体内腔的顶部连通,压力调节阀设置于气封主管上,压力反馈结构分别与罐体内腔的顶部和压力调节阀连接；供气设备用于通过气封主管向罐体内腔供入密封气,密封气为不可燃气体；压力反馈结构用于将罐体内腔的压力反馈到压力调节阀；压力调节阀根据压力反馈结构反馈的罐体内腔的压力调节通过气封主管的输出端供入罐体内腔的密封气的压力。本发明提供的可燃液体储罐,即可防止罐体内压力变化造成罐体变形或者损坏,又可避免可燃液体挥发的可燃蒸气发生着火、爆炸等事故。(The invention discloses a combustible liquid storage tank which comprises a tank body, a pressure relief valve, an air seal main pipe, a pressure feedback structure, a pressure regulating valve and air supply equipment, wherein the pressure relief valve is arranged at the top of the tank body; the gas supply equipment is used for supplying sealing gas to the inner cavity of the tank body through the gas seal main pipe, and the sealing gas is non-combustible gas; the pressure feedback structure is used for feeding back the pressure in the inner cavity of the tank body to the pressure regulating valve; the pressure regulating valve regulates the pressure of the sealing air which is supplied into the inner cavity of the tank body through the output end of the air seal main pipe according to the pressure of the inner cavity of the tank body, which is fed back by the pressure feedback structure. The combustible liquid storage tank provided by the invention can prevent the tank body from being deformed or damaged due to the pressure change in the tank body, and can also avoid accidents such as ignition, explosion and the like of combustible vapor volatilized by the combustible liquid.)

1. A combustible liquid storage tank is characterized in that: the pressure relief valve (11) is arranged at the top of the tank body (1), the input end and the output end of the gas seal main pipe (4) are respectively communicated with the gas supply equipment (6) and the top of an inner cavity of the tank body (1), the pressure regulating valve is arranged on the gas seal main pipe (4), and the pressure feedback structure is respectively connected with the top of the inner cavity of the tank body (1) and the pressure regulating valve;

the gas supply equipment (6) is used for supplying sealing gas (34) to the inner cavity of the tank body (1) through the gas seal main pipe (4), and the sealing gas (34) is non-combustible gas;

the pressure feedback structure is used for feeding back the pressure in the inner cavity of the tank body (1) to the pressure regulating valve;

the pressure regulating valve regulates the pressure of the sealing gas (34) which is fed into the inner cavity of the tank body (1) through the output end of the gas seal main pipe (4) according to the pressure of the inner cavity of the tank body (1) fed back by the pressure feedback structure.

2. The combustible liquid storage tank of claim 1 wherein: still include check valve (42), check valve (42) set up in the atmoseal is responsible for (4) on, check valve (42) set up in air supply equipment (6) with between the pressure regulating valve, check valve (42) are used for preventing the gas flow in the jar body (1) that uses to flow to air supply equipment (6).

3. The combustible liquid storage tank of claim 1 wherein: the gas supply equipment (6) is nitrogen gas supply equipment, the sealing gas (34) is nitrogen gas, and the nitrogen gas supply equipment is used for supplying nitrogen gas to the inner cavity of the tank body (1) through the gas seal main pipe (4).

4. The combustible liquid storage tank of claim 1 wherein: the pressure regulating valve is a self-operated regulating valve (41), the pressure feedback structure comprises a pressure feedback pipe (5), two ends of the pressure feedback pipe (5) are respectively communicated with the inner cavity at the top of the tank body (1) and the self-operated regulating valve (41), and the self-operated regulating valve (41) controls the pressure of the sealing gas (34) supplied to the inner cavity of the tank body (1) through the output end of the gas sealing main pipe (4) according to the pressure of the inner cavity at the top of the tank body (1) acquired through the pressure feedback pipe (5).

5. The combustible liquid storage tank of claim 4 wherein: the pressure feedback structure further comprises a pressure gauge (51), the pressure gauge (51) is arranged on the pressure feedback pipe (5), and the pressure gauge (51) is used for detecting the pressure in the pressure feedback pipe (5).

6. The combustible liquid storage tank of claim 5 wherein: the pressure feedback structure further comprises an alarm device (53), wherein the alarm device (53) is communicated with the pressure gauge (51).

7. The combustible liquid storage tank of claim 5 wherein: the pressure feedback structure further comprises a remote display module (52), wherein the remote display module (52) is communicated with the pressure gauge (51).

8. The combustible liquid storage tank of any one of claims 1-7 wherein: the utility model discloses a liquid level gauge, including jar body (1), jar body (1) is last to be provided with level gauge (13), jar body (1) lower part has sample connection (12), sample connection (12) department is provided with the valve, level gauge (13) are used for measuring the liquid level in the jar body (1).

Technical Field

The invention relates to the technical field of liquid storage, in particular to a combustible liquid storage tank.

Background

The storage tank is a container for storing liquid or gas, and is an indispensable and important infrastructure for industries such as petroleum, chemical engineering, grain and oil, food, fire protection, transportation, metallurgy, national defense and the like. With the change of the environmental temperature, the volume of the liquid or gas stored in the tank body of the storage tank changes, which causes the pressure change in the tank body, especially the stored liquid volatilizes due to the temperature rise, the temperature is reduced and the liquid is liquefied, the pressure change in the tank body of the storage tank is large, which easily makes the tank body swell or shrink, which causes the deformation or damage of the tank body, therefore, as shown in fig. 1, the existing storage tank is often provided with a breather valve 2 at the top of the tank body 1 to adjust the pressure in the tank body 1, however, for the existing storage tank provided with the breather valve 2, when the combustible liquid 31 is stored, the combustible liquid 31 volatilizes and forms combustible vapor at the top of the tank body 1, the air sucked through the breather valve 2 is mixed with the combustible vapor formed at the top of the tank body 1 to form a combustible and explosive mixed gas 32, and the combustible explosive mixed gas 32 may catch fire when encountering, Explosion and other safety accidents.

Disclosure of Invention

The invention aims to provide a combustible liquid storage tank which can prevent the tank body from being deformed or damaged due to the pressure change in the tank body, can avoid accidents such as ignition and explosion caused by the mixing of combustible steam volatilized from combustible liquid and air, and has good safety.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention discloses a combustible liquid storage tank which comprises a tank body, a pressure relief valve, an air seal main pipe, a pressure feedback structure, a pressure regulating valve and a gas supply device, wherein the pressure relief valve is arranged at the top of the tank body;

the gas supply equipment is used for supplying sealing gas to the inner cavity of the tank body through the gas seal main pipe, and the sealing gas is non-combustible gas;

the pressure feedback structure is used for feeding back the pressure of the inner cavity of the tank body to the pressure regulating valve;

the pressure regulating valve regulates the pressure of the sealing gas supplied to the inner cavity of the tank body through the output end of the gas seal main pipe according to the pressure of the inner cavity of the tank body fed back by the pressure feedback structure.

The invention has the beneficial effects that: incombustible sealing gas enters the top of the inner cavity of the tank body through the main gas seal pipe, volatile combustible vapor and combustible liquid are sealed at the lower part of the inner cavity of the tank body, the mixing of the combustible vapor and air is avoided, combustion-supporting gas is not contained in the tank body, ignition or explosion can be prevented, when the pressure in the tank body is too high, redundant sealing gas can be discharged through the pressure release valve, the expansion phenomenon of the tank can be avoided, accidents caused by the discharge of the combustible gas to the atmosphere can be avoided, the temperature is reduced, when the pressure in the tank body is changed, the sealing gas is supplied into the tank body through the gas supply equipment, the deformation of the tank body caused by the reduction of the pressure in the tank body can be prevented, the pressure of the inner cavity of the tank body is fed back to the pressure regulating valve by the pressure feedback structure, the pressure of the supplied sealing gas can be regulated in real time, when the pressure in, the deformation phenomenon of the tank body caused by negative pressure in the tank body cannot be supplemented by the air pressure of the supplied sealing air, the balance between the air sealing effect and the pressure in the tank body is favorably ensured, the air sealing is stable, and the safety of the storage tank is good.

Further, still include the check valve, the check valve set up in on the atmoseal is responsible for, the check valve set up in air supply equipment with between the pressure regulating valve, the check valve is used for preventing the internal gas flow direction of jar that uses to the air supply equipment.

The beneficial effect of adopting the further scheme is that: the combustible vapor in the tank body can be prevented from entering a sealed gas supply pipeline and equipment in a reverse flow manner, so that the sealed gas pollution is avoided, and the gas seal is stable.

Further, the gas supply equipment is nitrogen gas supply equipment, the seal gas is nitrogen gas, and the nitrogen gas supply equipment is used for supplying nitrogen gas to the inner cavity of the tank body through the gas seal main pipe.

The beneficial effect of adopting the further scheme is that: nitrogen gas is selected for use to the seal gas, and nitrogen gas density is greater than air density and is less than combustible vapor density, when pouring into nitrogen gas, can discharge the air through the relief valve at jar body top to with combustible vapor isolated in the nitrogen gas below, thoroughly isolated air and combustible gas, and select for use nitrogen gas economic nature good, it is pollution-free to discharge in external atmosphere.

Further, the pressure regulating valve is a self-operated regulating valve, the pressure feedback structure comprises a pressure feedback pipe, two ends of the pressure feedback pipe are respectively communicated with the inner cavity at the top of the tank body and the self-operated regulating valve, and the self-operated regulating valve controls the pressure of the sealing gas supplied to the inner cavity of the tank body through the output end of the gas seal main pipe according to the pressure of the inner cavity at the top of the tank body obtained through the pressure feedback pipe.

The beneficial effect of adopting the further scheme is that: the self-operated regulating valve is communicated with the inner cavity at the top of the tank body through the pressure feedback pipe, the pressure of the inner cavity of the tank body is fed back to the self-operated regulating valve, the self-operated regulating valve automatically regulates the pressure of the output sealing gas according to the pressure of the inner cavity of the tank body, the self-operated regulating valve does not need an external power supply, electric sparks can be avoided, the safety is improved, and the continuous and stable supply of the sealing gas into the tank body can be guaranteed.

Further, the pressure feedback structure further comprises a pressure gauge, the pressure gauge is arranged on the pressure feedback pipe, and the pressure gauge is used for detecting the pressure in the pressure feedback pipe.

The beneficial effect of adopting the further scheme is that: the pressure in the tank body can be conveniently mastered, and the internal condition of the tank body can be effectively monitored.

Further, the pressure feedback structure further comprises an alarm device, and the alarm device is communicated with the pressure gauge.

The beneficial effect of adopting the further scheme is that: when the pressure in the inner cavity of the tank body is in an abnormal state, an alarm can be sent out, and a worker can be reminded of handling the pressure conveniently.

Further, the pressure feedback structure further comprises a far-end display module, and the far-end display module is communicated with the pressure gauge.

The beneficial effect of adopting the further scheme is that: the pressure in the inner cavity of the tank body can be conveniently mastered in the remote monitoring chamber.

Further, be provided with the level gauge on the jar body, jar body lower part has the sample connection, sample connection department is provided with the valve, the level gauge is used for measuring the internal liquid level of jar.

The beneficial effect of adopting the further scheme is that: can master jar internal combustible gas's liquid level through the level gauge, can take a sample and carry out physics and chemistry detection to combustible liquid through the sample connection, can calculate out the weight of the combustible liquid of jar internal storage through the density of the combustible liquid that the level gauge and detected out.

Drawings

FIG. 1 illustrates a prior art tank with a breather valve;

FIG. 2 is a schematic diagram of an embodiment of the present invention;

FIG. 3 is a schematic view of an embodiment of the invention provided with a liquid level gauge;

in the figure: 1. a tank body; 11. a pressure relief valve; 12. a sampling port; 13. a liquid level meter; 2. a breather valve; 31. a combustible liquid; 32. flammable and combustible mixed gas; 33. a combustible vapor; 34. sealing gas; 4. a gas seal main pipe; 41. a self-operated regulating valve; 42. a non-return valve; 5. a pressure feedback tube; 51. a pressure gauge; 52. a remote display module; 53. an alarm device; 6. a gas supply device;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 2, the embodiment of the combustible liquid storage tank disclosed by the invention comprises a tank body 1, a pressure relief valve 11, a main gas seal pipe 4, a pressure feedback structure, a pressure regulating valve and a gas supply device 6, wherein the pressure relief valve 11 is arranged at the top of the tank body 1, the input end and the output end of the main gas seal pipe 4 are respectively communicated with the gas supply device 6 and the top of an inner cavity of the tank body 1, the pressure regulating valve is arranged on the main gas seal pipe 4, the pressure feedback structure is respectively connected with the top of the inner cavity of the tank body 1 and the pressure regulating valve, the bottom of the tank body 1 is provided with a liquid outlet, the liquid outlet is communicated with an output pipeline and is used for;

the gas supply device 6 is used for supplying sealing gas 34 to the inner cavity of the tank body 1 through the gas seal main pipe 4, the sealing gas 34 is non-combustible gas, and the sealing gas 34 can be gas with density larger than air density and smaller than density of combustible vapor 33 volatilized from the combustible liquid 31 stored in the tank body 1;

the pressure feedback structure is used for feeding back the pressure in the inner cavity of the tank body 1 to the pressure regulating valve;

the pressure regulating valve regulates the pressure of the sealing air 34 which is supplied into the inner cavity of the tank body 1 through the output end of the air seal main pipe 4 according to the pressure of the inner cavity of the tank body 1 fed back by the pressure feedback structure;

the pressure release valve 11 is used for discharging the gas in the tank body 1 when the pressure in the inner cavity of the tank body 1 is too high, and preventing the external air from entering the tank body 1 through the pressure release valve 11 when the pressure in the inner cavity of the tank body 1 is too low.

Micro-positive pressure is kept in the tank body 1.

As a further scheme of the above embodiment, the gas seal device further comprises a check valve 42, the check valve 42 is arranged on the gas seal main pipe 4, the check valve 42 is arranged between the gas supply device 6 and the pressure regulating valve, and the check valve 42 is used for preventing the gas in the used tank body 1 from flowing to the gas supply device 6.

Preferably, the gas supply device 6 is a nitrogen gas supply device, the seal gas 34 is nitrogen gas, the nitrogen gas supply device is used for supplying nitrogen gas to the inner cavity of the tank body 1 through the gas seal main pipe 4, and the pressure of the nitrogen gas supplied to the gas seal main pipe 4 by the nitrogen gas supply device is 0.8 Mpa.

Preferably, the pressure regulating valve is a self-operated regulating valve 41, the pressure feedback structure comprises a pressure feedback pipe 5, two ends of the pressure feedback pipe 5 are respectively communicated with the inner cavity at the top of the tank body 1 and the self-operated regulating valve 41, and the self-operated regulating valve 41 controls the pressure of the sealing gas 34 supplied to the inner cavity of the tank body 1 through the output end of the gas seal main pipe 4 according to the pressure of the inner cavity at the top of the tank body 1 obtained through the pressure feedback pipe 5.

As a further scheme of the above embodiment, the pressure feedback structure further includes a pressure gauge 51, the pressure gauge 51 is disposed on the pressure feedback pipe 5, and the pressure gauge 51 is configured to detect a pressure inside the pressure feedback pipe 5.

As a further scheme of the above embodiment, the pressure feedback structure further includes an alarm device 53, the alarm device 53 communicates with the pressure gauge 51, and the alarm device 53 may use one or more of various existing alarm devices such as an audible and visual alarm, a PC alarm, a mobile phone alarm, and the like.

As a further solution to the above embodiment, the pressure feedback structure further includes a remote display module 52, the remote display module 52 is in communication with the pressure gauge 51, and the remote display module 52 may be integrated on a computer in the monitoring room.

As shown in fig. 3, as a further solution of the above embodiment, a liquid level meter 13 is arranged on the tank 1, a sampling port 12 is arranged at the lower part of the tank 1, a valve is arranged at the sampling port 12, and the liquid level meter 13 is used for measuring the liquid level in the tank 1.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.