CN217635052U

CN217635052U - Gas storage tank

Info

Publication number: CN217635052U
Application number: CN202221880885.5U
Authority: CN
Inventors: 贾章椿; 张放; 毛鹏; 刘彬; 孟祥超; 亓建强; 崔伟; 谢广政; 张崇力; 阎琦; 石轶; 姜晓星; 刘畅
Original assignee: Chinalco Shandong Engineering Technology Co ltd
Current assignee: Chinalco Shandong Engineering Technology Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-10-21
Anticipated expiration: 2032-07-21

Abstract

A gas storage tank belongs to the technical field of gas storage tanks. The method is characterized in that: the side part of the tank body (3) is provided with a guide pipe (7), the guide pipe (7) and the tank body (3) form a communicating device, a drain valve (12) is installed in the guide pipe (7), the drain valve (12) is located at the bottom of the tank body (3), a drain valve (11) is further arranged at an outlet of the drain valve (12), a differential pressure transmitter (13) is further arranged outside the tank body (3), two pressure probes of the differential pressure transmitter (13) are respectively installed in sections of the guide pipe (7) located at the bottom and the side part of the tank body (3), the differential pressure transmitter (13) is connected with a controller (9), and the controller (9) is respectively connected with the drain valve (12) and the drain valve (11). In the gas storage tank, the conduit which forms a communicating vessel with the tank body is arranged, so that the influence of the gas pressure in the tank on the pressure at the two probes of the differential pressure transmitter is eliminated, the hydraulic pressure in the tank body is accurately reacted conveniently, and the liquid in the tank body is discharged conveniently.

Description

Gas storage tank

Technical Field

A gas storage tank belongs to the technical field of gas storage tanks.

Background

The gas storage tank is generally used for caching industrial gas, adjusting load, discharging accumulated liquid and oil stains and the like in industrial production. The quality of industrial gas is directly related to the quality of products, and flexible operation of pneumatic equipment is also influenced, so that the quality of industrial gas plays a crucial role in production of the whole enterprise.

The temperature of the industrial gas in the gas storage tank is reduced, saturated liquid can be separated out, and the gas-liquid separation effect is poor because no gas-liquid separation device is arranged in the conventional gas storage tank. In the prior art, a liquid storage tank is usually drained by adopting a manual liquid drainage mode or an electronic timing liquid drainage mode. When manual liquid drainage is adopted, the liquid level in the gas storage tank is difficult to observe, so that the phenomenon that gas carries liquid seriously exceeds the standard due to untimely liquid drainage is easy to cause. When the electronic timing liquid drainage mode is adopted, the liquid drainage time interval is set to be short for ensuring the gas supply quality of most enterprises, so that a large amount of gas is wasted; if the liquid discharge time interval is longer, the gas carrying liquid can also seriously exceed the standard. In the prior art, there is also a technical scheme for realizing liquid discharge control by measuring the pressure in the tank, however, since the pressure in the tank changes greatly, the pressure in the tank may affect the hydraulic pressure, so that it is difficult to achieve an ideal liquid discharge effect no matter the pressure is used as a monitoring object or the hydraulic pressure is used as a monitoring object.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the guide pipe which is arranged to form the communicating vessel with the tank body is provided, the influence of the air pressure in the tank on the pressure of two probes of the differential pressure transmitter is eliminated, the hydraulic pressure in the tank body is accurately reacted conveniently, and the gas storage tank which discharges the liquid in the tank body is convenient.

The utility model provides a technical scheme that its technical problem adopted is: this gas holder, including a jar body, its characterized in that: the lateral part of the tank body is provided with a guide pipe, the two ends of the guide pipe are respectively communicated with the inside of the tank body from the bottom and the upper part of the tank body, a communicating vessel is formed by the guide pipe and the tank body, a drain valve is arranged in the guide pipe and is positioned at the bottom of the tank body, a discharge valve is further arranged at the outlet of the drain valve, a differential pressure transmitter is further arranged outside the tank body, two pressure probes of the differential pressure transmitter are respectively arranged in sections of the guide pipe positioned at the bottom and the lateral part of the tank body, the differential pressure transmitter is connected with a controller, and the controller is respectively connected with the drain valve and the discharge valve.

Preferably, the guide pipe extends vertically downwards from the bottom of the tank body and then is bent horizontally, extends to the outer side of the tank body in the horizontal direction and then vertically upwards extends to the upper part of the tank body along the outer wall of the tank body to be communicated with the inner cavity of the tank body, the drain valve is installed in a vertical section of the guide pipe located at the bottom of the tank body, one of the two pressure probes of the differential pressure transmitter is arranged at the inlet of the drain valve, and the other pressure probe is installed in a vertical section of the guide pipe located at the outer side of the tank body.

Preferably, the two pressure probes of the differential pressure transmitter are equal in height.

Preferably, the middle part of the inner wall of the tank body is provided with a baffle plate which is an annular plate with a thick upper part and a thin lower part, and the periphery of an upper port of the baffle plate is fixed with the inner wall of the tank body.

Preferably, an air inlet pipe is arranged below the tank body, the air inlet pipe vertically extends upwards along the inside of the tank body when entering the inside of the tank body, horizontally bends after extending to the lower port of the baffle plate, vertically bends downwards after horizontally extending to the center of the tank body, and a trumpet-shaped diffusion port is arranged at the outlet of the air inlet pipe.

Preferably, an air inlet regulating valve is installed in the air inlet pipe, and the air inlet regulating valve is connected with the controller.

Preferably, a safety valve interface is arranged at the top of the tank body, a pressure transmitter, a pressure gauge interface and an air outlet are respectively arranged above the periphery of the tank body, and the pressure transmitter is connected with a controller.

Preferably, an observation window is arranged below the tank body.

Preferably, a liquid level switch is further installed in a vertical section of the guide pipe, which is located on the outer side of the tank body, the liquid level switch is located above the pressure probe, and the liquid level switch is connected with the controller.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

in the gas storage tank, the guide pipe which forms a communicating vessel with the tank body is arranged, so that the pressure difference value measured by the two pressure probes of the differential pressure transmitter can be regarded as the pressure difference value caused by the liquid level at the position of the pressure probes, thereby eliminating the influence of the gas pressure of the tank body, and simultaneously, after the liquid discharge valve is opened, the liquid level in the tank body is as high as the liquid level in the guide pipe, so that the liquid level in the tank body can be always remained at a certain height, and the gas in the tank is prevented from being discharged from the guide pipe.

By arranging the baffle plate in the tank body, in the process that moisture doped in industrial gas flows through the baffle plate along with the gas, free liquid can be retained on the surface of the baffle plate and the inner wall of the tank body and cannot pass through the baffle plate. The retained liquid is condensed into water drops and then gradually falls to the bottom of the tank body, thereby completing the gas-liquid separation.

Drawings

Fig. 1 is a schematic view of the structure of the gas storage tank.

Wherein: 1. safety valve interface 2, manometer interface 3, jar body 4, gas outlet 5, diffusion mouth 6, observation window 7, pipe 8, photovoltaic board 9, controller 10, liquid level switch 11, bleeder valve 12, flowing back valve 13, differential pressure transmitter 14, air inlet regulating valve 15, intake pipe 16, baffling board 17, pressure transmitter.

Detailed Description

Fig. 1 is a preferred embodiment of the present invention, and the present invention will be further explained with reference to fig. 1.

As shown in fig. 1, the gas storage tank comprises a tank body 3, a safety valve interface 1 is arranged at the top of the tank body 3, a pressure transmitter 17, a pressure gauge interface 2 and a gas outlet 4 are respectively arranged above the circumference of the tank body 3, and the pressure gauge interface 2 is used for installing a pressure gauge, so that the pressure in the tank body can be conveniently displayed on site. An observation window 6 is also arranged below the tank body 3.

An air inlet pipe 15 is arranged below the tank body 3, the air inlet pipe 15 penetrates through the wall of the tank body 3 from the outside of the tank body 3 and then enters the inner cavity of the tank body 3, an air inlet adjusting valve 14 is installed in the air inlet pipe 15, and the air inlet adjusting valve 14 is located outside the tank body 3. A baffle plate 16 is arranged on the periphery of the middle part of the inner wall of the tank body 3, the baffle plate 16 is an annular plate with a thick upper part and a thin lower part, and the periphery of the upper port of the baffle plate 16 is fixed with the inner wall of the tank body 3. The air inlet pipe 15 extends vertically upwards along the inside of the tank body 3 after entering the inside of the tank body 3, horizontally bends after extending to the lower port of the baffle plate 16, vertically bends downwards after horizontally extending to the center of the tank body 3, and is provided with a horn-shaped diffusion port 5 at the outlet of the air inlet pipe 15.

The bottom of the tank body 3 is provided with a conduit 7, the conduit 7 is bent horizontally after vertically extending downwards from the bottom of the tank body 3, extends to the outer side of the tank body 3 in the horizontal direction, vertically extends upwards to the upper part of the tank body 3 along the outer wall of the tank body 3, and is communicated with the inner cavity of the tank body 3. A liquid discharge valve 12 is arranged on the vertical section of the guide pipe 7 positioned at the bottom of the tank body 3, a differential pressure transmitter 13 is also arranged outside the liquid discharge valve 12, one pressure probe of the differential pressure transmitter 13 is arranged at the inlet of the liquid discharge valve 12, the other pressure probe is arranged in the vertical section of the guide pipe 7 positioned outside the tank body 3, and the two pressure probes are equal in height. A discharge valve 11 is arranged at one end of the horizontal section of the conduit 7 far away from the tank body 3, a liquid level switch 10 is also arranged in the vertical section of the conduit 7 positioned at the outer side of the tank body 3, and the liquid level switch 10 is positioned above the pressure probe.

A controller 9 is also provided outside the tank 3, and the controller 9 can be implemented in a manner known in the art, such as a PLC. The controller 9 is powered by an external power supply (such as 220V commercial power), or by the photovoltaic panel 8, a power signal output end of the photovoltaic panel 8 is connected to a power input end of a solar charging and discharging controller which is conventional in the art, and a power output end of the solar charging and discharging controller is connected to a power supply input end of the controller 9.

The signal output ends of the pressure transmitter 17, the liquid level switch 10 and the differential pressure transmitter 13 are connected to the signal input end of the controller 9, and the signal output end of the controller 9 is connected to the signal input ends of the air intake regulating valve 14, the liquid discharge valve 12 and the bleed valve 11.

The specific working process and working principle are as follows:

industrial gas enters the interior of the tank 3 through an inlet pipe 15 via an inlet regulating valve 14, and the opening degree of the inlet regulating valve 14 is controlled by the controller 9. The industrial gas is output through the diffusion opening 5 after entering the interior of the tank body 3, uniformly flows to the lower part of the tank body 3, and flows upwards after being gathered to a certain degree.

When the industrial gas flows to the baffle plate 16 in the upward flowing process, the industrial gas bypasses the baffle plate 16 along the arrangement direction of the baffle plate 16 and then flows to the upper part of the tank body 3 from the middle opening of the baffle plate 16. And finally flows out through an air outlet 4 at the upper part of the tank body 3. The buffer memory and pressure regulation are realized by the tank body 3 and then the liquid is conveyed to a downstream process. The pressure transmitter 17 detects the pressure in the tank 3 in real time, and the controller 9 adjusts the opening of the air inlet regulating valve 14 according to the pressure value input by the pressure transmitter 17.

During the process of the moisture doped in the industrial gas flowing through the baffle plate 16 along with the gas, the free liquid stays on the surface of the baffle plate 16 and the inner wall of the tank body 3 without passing through the baffle plate 16. The retained liquid is gradually dropped to the bottom of the tank 3 after being condensed into water droplets, thereby completing the gas-liquid separation.

As the liquid is gathered at the bottom of the tank body 3, the pressure at the inlet of the liquid discharge valve 12 is gradually increased, and the upper end of the guide pipe 7 is communicated with the inside of the tank body 3 to form a communicating device with the tank body 3, so that the pressure difference value measured by the two pressure probes of the differential pressure transmitter 13 can be regarded as the pressure difference value caused by the liquid level at the pressure probes, and the influence of the gas pressure in the tank body 3 is eliminated.

When the pressure difference outputted from the pressure transmitter 13 reaches a preset value, the controller 9 controls the drain valve 12 to open, and the liquid inside the tank 3 flows into the conduit 7. Due to the action of the conduit 7, the liquid level in the tank body 3 and the liquid level in the conduit 7 are equal in height, the pressure difference value measured by the differential pressure transmitter 13 is 0, and the controller 9 controls the liquid discharge valve 12 to be closed.

If the liquid level in the conduit 7 rises to the liquid level switch 10, the liquid level switch 10 sends a signal to the controller 9, and after receiving the signal of the liquid level switch 10, the controller 9 controls the liquid discharge valve 12 to be closed and then drives the discharge valve 11 to be opened, so as to discharge the liquid in the conduit 7.

It can be known from the above that, because a communicating vessel is formed between the conduit 7 and the tank 3, the pressure difference value measured by the two pressure probes of the differential pressure transmitter 13 can be regarded as the pressure difference value caused by the liquid level at the pressure probes, thereby eliminating the influence of the gas pressure in the tank 3, and meanwhile, after the liquid discharge valve 12 is opened, the liquid level in the tank 3 is as high as the liquid level in the conduit 7, so that the liquid level in the tank 3 always remains at a certain height, and the gas in the tank 3 is prevented from being discharged from the conduit 7.

Moreover, as can be seen from the above, when the controller 9 controls each execution device, the output basis of the output signal is simply the difference between the input value of each transmitter and the preset value, so that the method can be implemented without the aid of a specific computer program.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An air storage tank, including a tank body (3), characterized in that: the side part of the tank body (3) is provided with a guide pipe (7), two ends of the guide pipe (7) are respectively communicated with the inside of the tank body (3) from the bottom and the upper part of the tank body (3) and form a communicating device with the tank body (3), a drain valve (12) is installed in the guide pipe (7), the drain valve (12) is positioned at the bottom of the tank body (3), a drain valve (11) is further arranged at an outlet of the drain valve (12), a differential pressure transmitter (13) is further arranged outside the tank body (3), two pressure probes of the differential pressure transmitter (13) are respectively installed in sections of the guide pipe (7) positioned at the bottom and the side part of the tank body (3), the differential pressure transmitter (13) is connected with a controller (9), and the controller (9) is respectively connected with the drain valve (12) and the drain valve (11).

2. An air tank according to claim 1, characterized in that: the guide pipe (7) is bent horizontally after vertically extending downwards from the bottom of the tank body (3), extends to the outer side of the tank body (3) in the horizontal direction, then vertically extends upwards to the upper part of the tank body (3) along the outer wall of the tank body (3) to be communicated with the inner cavity of the tank body (3), the drain valve (12) is installed in a vertical section of the guide pipe (7) positioned at the bottom of the tank body (3), one of the two pressure probes of the differential pressure transmitter (13) is arranged at an inlet of the drain valve (12), and the other pressure probe is installed in a vertical section of the guide pipe (7) positioned at the outer side of the tank body (3).

3. An air tank according to claim 2, characterized in that: the two pressure probes of the differential pressure transmitter (13) have the same height.

4. An air tank according to claim 1, characterized in that: a baffle plate (16) is arranged in the middle of the inner wall of the tank body (3), the baffle plate (16) is an annular plate with a thick upper part and a thin lower part, and the periphery of the upper port of the baffle plate (16) is fixed with the inner wall of the tank body (3).

5. An air tank according to claim 4, characterized in that: an air inlet pipe (15) is arranged below the tank body (3), the air inlet pipe (15) vertically extends upwards along the inside of the tank body (3) in the tank body (3), horizontally bends after extending to the lower port of the baffle plate (16), vertically bends downwards after horizontally extending to the center of the tank body (3), and a trumpet-shaped diffusion port (5) is arranged at the outlet of the air inlet pipe (15).

6. An air tank according to claim 5, characterized in that: an air inlet adjusting valve (14) is installed in the air inlet pipe (15), and the air inlet adjusting valve (14) is connected with a controller (9).

7. An air tank according to claim 1, characterized in that: the safety valve interface (1) is arranged at the top of the tank body (3), a pressure transmitter (17), a pressure gauge interface (2) and an air outlet (4) are respectively arranged above the periphery of the tank body (3), and the pressure transmitter (17) is connected with a controller (9).

8. An air tank according to claim 1, characterized in that: an observation window (6) is arranged below the tank body (3).

9. An air tank according to claim 2, characterized in that: a liquid level switch (10) is further installed in a vertical section of the guide pipe (7) located on the outer side of the tank body (3), the liquid level switch (10) is located above the pressure probe, and the liquid level switch (10) is connected with the controller (9).