Non-condensable gas discharging structure of liquefied hydrocarbon storage tank

Abstract

The utility model relates to the technical field of liquefied hydrocarbon storage and discharge, in particular to a liquefied hydrocarbon storage tank non-condensable gas discharge structure which comprises a liquefied hydrocarbon storage tank, a controller is installed on the front face of the liquefied hydrocarbon storage tank, a non-condensable gas discharge pipe is installed at the top of the liquefied hydrocarbon storage tank, a pressure sensor is installed on the front face of the non-condensable gas discharge pipe in an embedded mode, and the pressure sensor is connected with the controller. A first electric control valve is installed at the end, away from the liquefied hydrocarbon storage tank, of the non-condensable gas discharging pipe, a gas flow meter is installed at the other end of the first electric control valve, and a condenser is installed on the right side of the liquefied hydrocarbon storage tank. Therefore, safe discharge after the pressure of the storage tank is monitored and controlled to be reduced to a normal level in the discharge process is ensured, gas-liquid condensation variables of the non-condensable gas in the storage tank are accurately converted and emptied, the safety of the storage tank is prevented from being influenced by pressure fluctuation in the discharge process, the non-condensable gas is prevented from being leaked to the environment for use due to insufficient discharge treatment, and the device is very practical.

Description

Technical Field

[0001] The utility model relates to the technical field of storage and discharge of liquefied hydrocarbons, in particular to a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank. Background Art

[0002] A liquefied hydrocarbon storage tank is a container used to store liquefied hydrocarbons. Liquefied hydrocarbons are hydrocarbon substances that are liquid at room temperature and are usually used as fuels, chemical raw materials, etc. The non-condensable gas in a liquefied hydrocarbon storage tank is mainly composed of the steam generated when the liquefied hydrocarbon evaporates. These steams form non-condensable gases of a certain pressure in the storage tank. The purpose of the non-condensable gas discharge structure of the liquefied hydrocarbon storage tank is to safely and effectively discharge the non-condensable gas in the storage tank, while ensuring that the liquefied hydrocarbons in the storage tank will not leak into the environment.

[0003] In the prior art, when the non-condensable gas is discharged through the non-condensable gas discharge structure of the liquefied hydrocarbon storage tank, a discharge valve is usually installed on the storage tank to discharge the non-condensable gas. The discharge valve does not have a pressure monitoring structure, which makes it inconvenient to monitor and control the discharge process until the pressure of the storage tank drops to a normal level to avoid affecting the safe use of the storage tank due to pressure fluctuations during the discharge process. At the same time, there is no gas-liquid change measurement structure before and after the condenser condenses the non-condensable gas into liquid, which makes it inconvenient to ensure whether the non-condensable gas in the storage tank is condensed and emptied, and there is a risk of leakage to the environment, which in turn affects the safe prevention and control of the non-condensable gas discharge process.

[0004] Therefore, it is necessary to design a non-condensable gas discharge structure for a liquefied hydrocarbon storage tank to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank, so as to improve the non-condensable gas discharge structure with a pressure monitoring structure and a gas-liquid change measurement structure, ensure the safe discharge after the discharge process monitors and controls the storage tank pressure to drop to a normal level and ensure the accurate conversion and emptying of the gas-liquid condensation variable of the non-condensable gas in the storage tank, avoid pressure fluctuations during the discharge process that affect the safety of the storage tank and prevent the non-condensable gas from leaking to the environment due to insufficient discharge treatment, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A non-condensable gas discharge structure for a liquefied hydrocarbon storage tank comprises a liquefied hydrocarbon storage tank, a controller is installed on the front of the liquefied hydrocarbon storage tank, a non-condensable gas discharge pipe is installed on the top of the liquefied hydrocarbon storage tank, a pressure sensor is embedded in the front of the non-condensable gas discharge pipe, a first electrically-controlled valve is installed at one end of the non-condensable gas discharge pipe away from the liquefied hydrocarbon storage tank, a gas flow meter is installed at the other end of the first electrically-controlled valve, a condenser is installed on the right side of the liquefied hydrocarbon storage tank, a condenser is installed inside the condenser, an air inlet pipe and a liquid discharge pipe are respectively provided at both ends of the condenser, a delivery pipe is installed between the air inlet pipe and the gas flow meter, one end of the liquid discharge pipe passes through the outside of the condenser and a second electrically-controlled valve is installed, and a liquid flow meter is installed at the other end of the second electrically-controlled valve.

[0008] As a preferred solution of the utility model, a liquefied hydrocarbon input valve pipe and a liquefied hydrocarbon output valve pipe are installed in sequence from top to bottom on the front side of the liquefied hydrocarbon storage tank.

[0009] As a preferred solution of the utility model, the controller is provided with a display screen and a plurality of control buttons, and the controller is electrically connected to the pressure sensor, the first electrically controlled valve, the gas flow meter, the condenser, the second electrically controlled valve and the liquid flow meter.

[0010] As a preferred solution of the utility model, the upper and lower ends of the back side of the condenser are connected to the right outer wall of the liquefied hydrocarbon storage tank through a mounting frame, and a cooling fan is embedded in the back side of the condenser, wherein the cooling fan is composed of a fan and a refrigeration plate.

[0011] As a preferred solution of the utility model, heat exchange fins are installed inside the condenser and on the front side of the condenser tube.

[0012] As a preferred solution of the utility model, a heat dissipation groove is provided on the front side of the condenser, and a protective net is installed on the outer side of the heat dissipation groove.

[0013] As a preferred solution of the utility model, the end of the liquid flow meter away from the second electric control valve can be connected to the non-condensable gas condensation discharge recovery treatment equipment through a pipeline.

[0014] Beneficial effect: In view of the problem in the prior art that it is impossible to avoid pressure fluctuations during the discharge process, which affects the safety of the storage tank and prevent the non-condensable gas from being insufficiently discharged and leaked to the environment, in the utility model, a non-condensable gas discharge pipe with a pressure sensor is provided to cooperate with a gas flow meter to connect the air inlet pipe of the condenser tube of the condenser, and the liquid flow meter is connected to the second electric control valve through the discharge pipe of the condenser. This facilitates the monitoring and control of the discharge process until the pressure of the storage tank drops to a normal level, so as to avoid the safe use of the storage tank being affected by pressure fluctuations during the discharge process. At the same time, in the process before and after the condenser condenses the non-condensable gas into liquid, a gas-liquid change measurement structure is provided, so as to ensure that the gas-liquid condensation variable of the non-condensable gas in the storage tank is accurately converted and discharged, thereby avoiding the non-condensable gas from being insufficiently discharged and leaked to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall stereogram of a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a condenser in a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a condensable gas discharge pipe, a pressure sensor, a first electric control valve, and a gas flow meter in a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of a second electric control valve and a liquid flow meter in a non-condensable gas discharge structure of a liquefied hydrocarbon storage tank.

[0019] In the figure: 1. liquefied hydrocarbon storage tank; 2. controller; 3. non-condensable gas discharge pipe; 4. pressure sensor; 5. first electric control valve; 6. gas flow meter; 7. delivery pipe; 8. condenser; 81. condenser pipe; 811. air inlet pipe; 812. discharge pipe; 82. cooling fan; 83. heat exchange fins; 84. heat sink; 9. second electric control valve; 10. liquid flow meter. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A non-condensable gas discharge structure of a liquefied hydrocarbon storage tank comprises a liquefied hydrocarbon storage tank 1, a controller 2 is installed on the front of the liquefied hydrocarbon storage tank 1, a liquefied hydrocarbon input valve pipe and a liquefied hydrocarbon output valve pipe are installed on the front of the liquefied hydrocarbon storage tank 1 in sequence from top to bottom, a display screen and a plurality of control buttons are provided on the controller 2, and the controller 2 is electrically connected with a pressure sensor 4, a first electric-controlled valve 5, a gas flow meter 6, a condenser 8, a second electric-controlled valve 9 and a liquid flow meter 10, a non-condensable gas discharge pipe 3 is installed on the top of the liquefied hydrocarbon storage tank 1, a pressure sensor 4 is embedded in the front of the non-condensable gas discharge pipe 3, a first electric-controlled valve 5 is installed at one end of the non-condensable gas discharge pipe 3 away from the liquefied hydrocarbon storage tank 1, a gas flow meter 6 is installed at the other end of the first electric-controlled valve 5, a condenser 8 is installed on the right side of the liquefied hydrocarbon storage tank 1, a condenser pipe 81 is installed inside the condenser 8, and air inlet pipes 81 are respectively arranged at both ends of the condenser pipe 81 1 and the drain pipe 812, a delivery pipe 7 is installed between the air inlet pipe 811 and the gas flow meter 6, one end of the drain pipe 812 passes through the outside of the condenser 8 and is installed with a second electric-controlled valve 9, and the other end of the second electric-controlled valve 9 is installed with a liquid flow meter 10. The non-condensable gas discharge pipe 3 with a pressure sensor 4 is arranged to cooperate with the gas flow meter 6 to connect the air inlet pipe 811 of the condenser pipe 81 of the condenser 8, and the liquid flow meter 10 is connected through the drain pipe 812 of the condenser 8, so as to facilitate the monitoring and control of the discharge process after the pressure of the storage tank drops to a normal level, so as to avoid the pressure fluctuation during the discharge process affecting the safe use of the storage tank. At the same time, in the process before and after the condenser 8 condenses the non-condensable gas into liquid, a gas-liquid change measurement structure is provided, so as to ensure that the gas-liquid condensation variable of the non-condensable gas in the storage tank is accurately converted and emptied, thereby avoiding the non-condensable gas from being insufficiently discharged and leaked to the environment.

[0026] Specifically, the upper and lower ends of the back side of the condenser 8 are connected to the right outer wall of the liquefied hydrocarbon storage tank 1 through a mounting frame, and a cooling fan 82 is embedded in the back side of the condenser 8, wherein the cooling fan 82 is composed of a fan and a refrigeration plate. Heat exchange fins 83 are installed inside the condenser 8 and in front of the condenser tube 81. A heat dissipation groove 84 is opened on the front side of the condenser 8, and a protective net is installed on the outside of the heat dissipation groove 84. The condenser 8 is used to condense the non-condensable gas into liquid, thereby safely and effectively discharging the non-condensable gas in the storage tank.

[0027] Preferably, the end of the liquid flow meter 10 away from the second electric control valve 9 can be connected to the non-condensable gas condensation discharge recovery and processing equipment through a pipeline. The non-condensable gas condensation discharge recovery and processing equipment can condense the non-condensable gas into liquid in the condenser, and further recycle and discharge it, so that the liquid containing harmful substances can be properly treated and disposed of in accordance with relevant laws and regulations.

[0028] In summary, the utility model adds a pressure monitoring structure and a gas-liquid change measurement structure to the non-condensable gas discharge structure, thereby ensuring safe discharge after the discharge process monitors and controls the pressure of the storage tank to a normal level and ensuring accurate conversion and emptying of the gas-liquid condensation variable of the non-condensable gas in the storage tank, thereby avoiding pressure fluctuations during the discharge process that affect the safety of the storage tank and preventing insufficient discharge treatment of non-condensable gas from leaking into the environment. The utility model is very practical.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-condensable gas discharge structure for a liquefied hydrocarbon storage tank, comprising a liquefied hydrocarbon storage tank (1), characterized in that A controller (2) is installed on the front of the liquefied hydrocarbon storage tank (1); a non-condensable gas discharge pipe (3) is installed on the top of the liquefied hydrocarbon storage tank (1); a pressure sensor (4) is embedded in the front of the non-condensable gas discharge pipe (3); a first electric control valve (5) is installed at one end of the non-condensable gas discharge pipe (3) away from the liquefied hydrocarbon storage tank (1); a gas flow meter (6) is installed at the other end of the first electric control valve (5); a cold air flow meter (7) is installed on the right side of the liquefied hydrocarbon storage tank (1); A condenser (8), wherein a condenser (81) is installed inside the condenser (8), an air inlet pipe (811) and a liquid discharge pipe (812) are respectively provided at both ends of the condenser (81), a delivery pipe (7) is installed between the air inlet pipe (811) and the gas flow meter (6), one end of the liquid discharge pipe (812) passes through the outside of the condenser (8) and is installed with a second electric control valve (9), and the other end of the second electric control valve (9) is installed with a liquid flow meter (10).

2. A non-condensable gas discharge structure for a liquefied hydrocarbon storage tank according to claim 1, characterized in that: A liquefied hydrocarbon input valve pipe and a liquefied hydrocarbon output valve pipe are sequentially installed on the front side of the liquefied hydrocarbon storage tank (1) from top to bottom.

3. The non-condensable gas discharge structure of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The controller (2) is provided with a display screen and a plurality of control buttons, and the controller (2) is electrically connected to a pressure sensor (4), a first electrically controlled valve (5), a gas flow meter (6), a condenser (8), a second electrically controlled valve (9) and a liquid flow meter (10).

4. The non-condensable gas discharge structure of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The upper and lower ends of the back side of the condenser (8) are connected to the right outer wall of the liquefied hydrocarbon storage tank (1) through a mounting frame, and a cooling fan (82) is embedded and installed on the back side of the condenser (8), wherein the cooling fan (82) is composed of a fan and a refrigeration plate.

5. The non-condensable gas discharge structure of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: Heat exchange fins (83) are installed inside the condenser (8) and on the front side of the condensation tube (81).

6. The non-condensable gas discharge structure of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: A heat dissipation groove (84) is provided on the front side of the condenser (8), and a protective net is installed on the outside of the heat dissipation groove (84).

7. The non-condensable gas discharge structure of a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The end of the liquid flow meter (10) away from the second electric control valve (9) can be connected to a discharge recovery and treatment device for condensed non-condensable gas through a pipeline.

Images