A buffer regulation system for an oil and gas recovery device

Abstract

This utility model provides a buffer regulation system for an oil and gas recovery device, belonging to the field of oil and gas storage technology. It includes a first blower and a double-layer inflatable membrane storage cabinet. The inlet of the first blower is connected to air. The double-layer inflatable membrane storage cabinet has a heat-insulating and regulating chamber and an oil and gas discharge end. The outlet of the first blower is connected to the heat-insulating and regulating chamber, and the inlet of the oil and gas recovery device is connected to the oil and gas discharge end. This application, through the double-layer inflatable membrane storage cabinet, can increase the stability of the airflow and pressure of the oil and gas recovery device, improve the lifespan and safety of the oil and gas recovery device, and increase the oil and gas processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas storage technology, and more specifically, relates to a buffer regulation system for an oil and gas recovery device. Background Technology

[0002] Oil and gas recovery devices collect volatile organic mixed gases generated during production processes and chemical reactions. Through one or more methods such as absorption, adsorption, and condensation, the oil and gas are transformed from a gaseous state to a liquid state, thereby reducing oil and gas pollution and enabling their reuse.

[0003] Unstable exhaust from the safety valve and vacuum pump supplying oil and gas to the oil and gas recovery unit results in these oil and gas directly entering the unit, requiring frequent adjustments to adapt to changes in gas volume. Gas volume fluctuations lead to insufficient oil and gas recovery, resulting in decreased equipment efficiency and recovery rate. Frequent start-ups and shutdowns or load changes accelerate equipment wear and shorten its lifespan. At the same time, pressure fluctuations may cause frequent activation of the safety valve, increasing safety risks. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a buffer regulation system for an oil and gas recovery device, which aims to solve the problem that the existing safety valve exhaust and vacuum pump exhaust for supplying gas to the oil and gas recovery device are unstable, resulting in the oil and gas recovery device being unable to fully recover oil and gas.

[0005] This utility model is specifically implemented as follows:

[0006] A buffer regulation system for an oil and gas recovery device includes:

[0007] The first fan, the inlet of the first fan is used to connect with the air;

[0008] The double-layer inflatable membrane storage cabinet has a heat-insulating and regulating chamber and an oil and gas discharge end. The outlet of the first fan is connected to the heat-insulating and regulating chamber, and the inlet of the oil and gas recovery device is connected to the oil and gas discharge end.

[0009] Furthermore, the double-layer inflatable membrane storage cabinet is equipped with a pressure regulating valve corresponding to the heat-insulating and regulating chamber, and the input end of the pressure regulating valve extends into the heat-insulating and regulating chamber.

[0010] Furthermore, the double-layer inflatable membrane storage cabinet is equipped with a pressure transmitter corresponding to the heat-insulating and regulating chamber, and the pressure transmitter extends into the heat-insulating and regulating chamber.

[0011] Furthermore, the oil and gas recovery device includes a first heat exchanger, the shell-side inlet of the first heat exchanger serving as the inlet of the oil and gas recovery device, and the first tube-side outlet of the first heat exchanger being connected to one end of a nitrogen pipeline.

[0012] Furthermore, a nitrogen regulating valve is provided between the first tube outlet of the first heat exchanger and the nitrogen pipeline.

[0013] Furthermore, the oil and gas recovery device includes a second heat exchanger, the shell-side inlet of the second heat exchanger is connected to the shell-side outlet of the first heat exchanger, the tube-side inlet of the second heat exchanger is used to connect to one end of the liquid nitrogen pipeline, and the first tube-side outlet of the second heat exchanger is connected to the tube-side inlet of the first heat exchanger.

[0014] Furthermore, a liquid nitrogen regulating valve is provided between the tube inlet of the second heat exchanger and the liquid nitrogen pipeline.

[0015] Furthermore, the oil and gas recovery device includes a storage tank, and the two inlets of the storage tank are connected one-to-one with the second tube outlet of the first heat exchanger and the second tube outlet of the second heat exchanger.

[0016] Furthermore, the oil and gas recovery device includes a second fan, the inlet of which is connected to the shell-side outlet of the second heat exchanger.

[0017] Furthermore, the oil and gas recovery device includes an exhaust stack, the inlet of which is connected to the outlet of the second blower.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this application can increase the stability of the air flow and pressure of the oil and gas recovery device through the double-layer inflatable membrane storage cabinet, improve the life and safety of the oil and gas recovery device, and improve the oil and gas treatment efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the buffer regulation system of an oil and gas recovery device provided in an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. First fan;

[0023] 2. Double-layer inflatable membrane storage cabinet; 21. Insulated and regulating chamber; 22. Pressure regulating valve; 23. Pressure transmitter;

[0024] 3. Oil and gas recovery device; 31. First heat exchanger; 311. Nitrogen regulating valve; 321. Liquid nitrogen regulating valve; 32. Second heat exchanger; 33. Storage tank; 34. Second fan; 35. Exhaust stack. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Reference Figure 1As shown, this utility model provides a technical solution: a buffer regulation system for an oil and gas recovery device, including a first blower 1 and a double-layer inflatable membrane storage cabinet 2; the inlet of the first blower 1 is used to connect with air; the double-layer inflatable membrane storage cabinet 2 has a heat-insulating and regulating chamber 21 and an oil and gas discharge end, the outlet of the first blower 1 is connected to the heat-insulating and regulating chamber 21, and the inlet of the oil and gas recovery device 3 is connected to the oil and gas discharge end.

[0031] For example, the area between the outer shell and the inner membrane of the double-layer inflatable membrane storage cabinet 2 can serve as a temperature-regulating chamber 21.

[0032] In practical applications, the first fan 1 extracts oil and gas and transports it to the insulated and regulating chamber 21 of the double-layer inflatable membrane storage tank 2. As oil and gas continuously enter the insulated and regulating chamber 21, the chamber automatically expands and buffers pressure due to the elasticity of the membrane material, keeping the gas pressure constant. After stabilization, the oil and gas is evenly transported to the oil and gas recovery device 3 through the oil and gas discharge end. The double-layer inflatable membrane storage tank 2 increases the stability of the airflow and pressure of the oil and gas recovery device 3, improves the lifespan and safety of the device, and enhances the oil and gas processing efficiency.

[0033] Reference Figure 1 As shown, in one possible embodiment, the double-layer inflatable membrane storage cabinet 2 is provided with a pressure regulating valve 22 corresponding to the heat preservation and regulating chamber 21, and the input end of the pressure regulating valve 22 extends into the heat preservation and regulating chamber 21.

[0034] In practical applications, the pressure regulating valve 22 monitors the pressure of the insulation regulating chamber 21 in real time. It automatically opens to release pressure when there is overpressure and closes to maintain pressure when there is low pressure. By maintaining the pressure of the insulation regulating chamber 21, the inner and outer membranes of the double-layer inflatable membrane storage cabinet 2 are prevented from over-expanding and rupturing or collapsing and blocking, thus improving the safety of the double-layer inflatable membrane storage cabinet 2.

[0035] Reference Figure 1 As shown, in one possible embodiment, a pressure transmitter 23 is provided in the double-layer inflatable membrane storage cabinet 2 corresponding to the heat preservation and conditioning chamber 21, and the pressure transmitter 23 extends into the heat preservation and conditioning chamber 21.

[0036] In practical applications, the pressure transmitter 23 detects the inner membrane pressure of the double-layer inflatable membrane storage tank 2, so that the oil and gas in the inner membrane are maintained at a preset pressure.

[0037] Reference Figure 1 As shown, in one possible embodiment, the oil and gas recovery device 3 includes a first heat exchanger 31, the shell-side inlet of the first heat exchanger 31 serves as the inlet of the oil and gas recovery device 3, and the first tube-side outlet of the first heat exchanger 31 is used to connect to one end of a nitrogen pipeline.

[0038] In practical applications, oil and gas enter the shell side of the first heat exchanger 31 and exchange heat with liquid nitrogen in the tube side. The nitrogen generated during the heat exchange process can be discharged from the nitrogen pipeline. The liquid nitrogen absorbs the heat of the oil and gas, which initially cools the oil and gas and allows the oil and gas to be recovered.

[0039] Reference Figure 1 As shown, in one possible embodiment, a nitrogen regulating valve 311 is provided between the first tube outlet of the first heat exchanger 31 and the nitrogen pipeline.

[0040] In practical applications, the nitrogen regulating valve 311 can regulate the amount of nitrogen discharged from the nitrogen pipeline.

[0041] Reference Figure 1 As shown, in one possible embodiment, the oil and gas recovery device 3 includes a second heat exchanger 32, the shell-side inlet of the second heat exchanger 32 is connected to the shell-side outlet of the first heat exchanger 31, the tube-side inlet of the second heat exchanger 32 is used to connect to one end of a liquid nitrogen pipeline, and the first tube-side outlet of the second heat exchanger 32 is connected to the tube-side inlet of the first heat exchanger 31.

[0042] In practical applications, the initially cooled oil and gas enter the shell side of the second heat exchanger 32, while liquid nitrogen is introduced into the tube side of the second heat exchanger 32 for rapid vaporization and heat absorption, thus deeply cooling the oil and gas. When replenishing liquid nitrogen, part of the liquid nitrogen enters the tube side of the second heat exchanger 32, and the other part enters the tube side of the first heat exchanger 31. Through the cooperation of the first heat exchanger 31 and the second heat exchanger 32, two-stage cooling can improve cooling efficiency.

[0043] Reference Figure 1 As shown, in one possible embodiment, a liquid nitrogen regulating valve 321 is provided between the tube inlet of the second heat exchanger 32 and the liquid nitrogen pipeline.

[0044] In practical applications, when the liquid nitrogen in the second heat exchanger 32 is insufficient, the liquid nitrogen regulating valve 321 can be opened to replenish the liquid nitrogen in the second heat exchanger 32 to ensure that the second heat exchanger 32 maintains the corresponding cooling temperature.

[0045] Reference Figure 1 As shown, in one possible embodiment, the oil and gas recovery device 3 includes a storage tank 33, and the two inlets of the storage tank 33 are connected one-to-one with the second tube outlet of the first heat exchanger 31 and the second tube outlet of the second heat exchanger 32.

[0046] In practical applications, the condensate from the first heat exchanger 31 and the condensate from the second heat exchanger 32 are stored in the storage tank 33 so that the condensate can be reused.

[0047] Reference Figure 1As shown, in one possible embodiment, the oil and gas recovery device 3 includes a second fan 34, the inlet of which is connected to the shell-side outlet of the second heat exchanger 32.

[0048] In practical applications, the second fan 34 draws the purified exhaust gas from the second heat exchanger 32 to provide power for exhaust gas emission and prevent the accumulation of residual oil and gas.

[0049] Reference Figure 1 As shown, in one possible embodiment, the oil and gas recovery device 3 includes an exhaust stack 35, the inlet of which is connected to the outlet of the second blower 34.

[0050] In practical applications, the purified exhaust gas is discharged at a height of 35 degrees through the exhaust stack.

[0051] Assume the thermal insulation chamber 21 is divided into chamber P1 and chamber P2. The pressure regulation process of the pressure regulating valve 22 is as follows: According to the ideal gas equation pv=nRT, where P: absolute gas pressure, unit: Pascal (Pa); V: gas volume, unit: cubic meter (m³); n: amount of substance of the gas, unit: mole (mol); R: gas constant, value: 8.314 J / (mol·K); T: thermodynamic temperature (absolute temperature), unit: Kelvin (K). An increase in the inner membrane flow rate of the double-layer inflatable membrane storage cabinet 2 → an increase in the gas volume n → if the expansion of the gas volume V in chamber P2 is restricted → the pressure in chamber P2 rises significantly.

[0052] When the inner membrane pressure of the double-layer inflatable membrane storage tank 2 rises above the preset pressure, the pressure in chamber P2 rises → the pressure in chamber P1 rises → the pressure regulating valve 22 opens to release pressure → the pressure in chamber P1 is maintained at the set high value. When the inner membrane pressure of P2 stabilizes at the preset pressure value, the oil and gas recovery device 3 can begin the cooling stage.

[0053] According to the ideal gas equation pv=nRT, a decrease in the inner membrane flow rate leads to a decrease in the gas volume n, which in turn leads to a significant decrease in the pressure of chamber P2.

[0054] When the inner membrane pressure of the double-layer inflatable membrane storage tank 2 drops below the preset pressure, the pressure in chamber P2 decreases → the pressure in chamber P1 decreases → the temperature transmitter and the fan are interlocked, and the first fan 1 blows air → the pressure in chamber P1 increases → the volume of chamber P2 decreases → the pressure in chamber P2 increases. After pressure regulation, when the inner membrane pressure stabilizes at the preset pressure value, the oil and gas recovery device 3 can begin the cooling stage.

[0055] When the amount of oil and gas in the inner membrane of the double-layer inflatable membrane storage cabinet 2 decreases, the outer membrane of the double-layer inflatable membrane storage cabinet 2 is inhaled through the first fan 1, and the inner membrane of the double-layer inflatable membrane storage cabinet 2 maintains the preset pressure of oil and gas.

[0056] When the amount of oil and gas increases, the inner membrane of the double-layer inflatable membrane storage tank 2 expands normally, and the excess air in the outer membrane of the double-layer inflatable membrane storage tank 2 is discharged through the pressure regulating valve 22.

[0057] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A surge regulation system for an oil and gas recovery installation, characterized in that include: The first fan (1) has an inlet for communicating with air; The double-layer inflatable membrane storage cabinet (2) has a heat-insulating and regulating chamber (21) and an oil and gas discharge end. The outlet of the first fan (1) is connected to the heat-insulating and regulating chamber (21), and the inlet of the oil and gas recovery device (3) is connected to the oil and gas discharge end.

2. The buffer regulation system of the oil and gas recovery device according to claim 1, characterized in that, The double-layer inflatable membrane storage cabinet (2) is equipped with a pressure regulating valve (22) corresponding to the heat preservation and regulating chamber (21), and the input end of the pressure regulating valve (22) extends into the heat preservation and regulating chamber (21).

3. The buffer regulation system of the oil and gas recovery device according to claim 1, characterized in that, The double-layer inflatable membrane storage cabinet (2) is equipped with a pressure transmitter (23) corresponding to the heat-insulating and regulating chamber (21), and the pressure transmitter (23) extends into the heat-insulating and regulating chamber (21).

4. The buffer regulation system of the oil and gas recovery device according to claim 1, characterized in that, The oil and gas recovery device (3) includes a first heat exchanger (31), the shell-side inlet of the first heat exchanger (31) serves as the inlet of the oil and gas recovery device (3), and the first tube-side outlet of the first heat exchanger (31) is used to connect to one end of a nitrogen pipeline.

5. The buffer regulation system of the oil and gas recovery device according to claim 4, characterized in that, A nitrogen regulating valve (311) is provided between the first tube outlet of the first heat exchanger (31) and the nitrogen pipeline.

6. The buffer regulation system of an oil and gas recovery device according to claim 5, characterized in that, The oil and gas recovery device (3) includes a second heat exchanger (32), the shell-side inlet of the second heat exchanger (32) is connected to the shell-side outlet of the first heat exchanger (31), the tube-side inlet of the second heat exchanger (32) is used to connect to one end of the liquid nitrogen pipeline, and the first tube-side outlet of the second heat exchanger (32) is connected to the tube-side inlet of the first heat exchanger (31).

7. The buffer regulation system of an oil and gas recovery device according to claim 6, characterized in that, A liquid nitrogen regulating valve (321) is provided between the tube inlet of the second heat exchanger (32) and the liquid nitrogen pipeline.

8. The buffer regulation system of an oil and gas recovery device according to claim 7, characterized in that, The oil and gas recovery device (3) includes a storage tank (33), and the two inlets of the storage tank (33) are connected one-to-one with the second tube outlet of the first heat exchanger (31) and the second tube outlet of the second heat exchanger (32).

9. The buffer regulation system of an oil and gas recovery device according to claim 8, characterized in that, The oil and gas recovery device (3) includes a second fan (34), the inlet of which is connected to the shell-side outlet of the second heat exchanger (32).

10. The buffer regulation system of an oil and gas recovery device according to claim 9, characterized in that, The oil and gas recovery device (3) includes an exhaust stack (35), the inlet of which is connected to the outlet of the second blower (34).

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