Automatic liquid discharge controller of separation container

Abstract

The utility model discloses an automatic drainage controller for a separation container, which belongs to the field of equipment drainage and comprises an outer barrel, an inner barrel is arranged inside the outer barrel, the upper portion of the outer barrel is connected with a magnetic reed floating ball rod, one end of the magnetic reed floating ball rod is exposed outside the outer barrel, and the other end of the magnetic reed floating ball rod is suspended inside the outer barrel. A limiting balance siphon is connected between the outer side wall of the bottom of the inner barrel and the inner side wall of the bottom of the outer barrel, two inner floating balls are arranged in the inner barrel, a discharging valve seat is arranged at the bottom of the inner barrel, an inner barrel discharging opening is formed in the bottom of the discharging valve seat and connected with an inner barrel discharging pipe, and the inner barrel discharging pipe is connected with an outer barrel discharging pipe. And an automatic pressure compensation control valve is arranged on the inner cylinder discharge pipe. The utility model can automatically adjust and control the discharge according to the liquid level, thereby realizing the purpose of discharging liquid without exhausting. In an operation interface of liquid collection and discharge operation required by gas-liquid separation, the defects of labor amount and inaccurate operation caused by manual operation are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of equipment liquid discharge, and in particular relates to an automatic liquid discharge controller for a separation container. Background Art

[0002] The draining of liquid from the separator equipment at the compressor outlet is crucial in the operation of natural gas processing plants. However, extensive research and in-depth review of relevant literature revealed numerous significant deficiencies in existing technologies in this area. Existing technologies are generally complex, involving numerous processes and steps. Equipment installation, commissioning, and daily operation and maintenance all require significant time and effort. This not only increases costs for companies but also places immense pressure on technicians. Existing technologies also suffer from a serious lack of automation. For example, the Kekya processing station is equipped with three air compressors, providing instrument air for the equipment and air for filter element purging during some inspection and maintenance work. However, due to the low liquid content in the air compressor outlet storage tank, there is no level gauge. Consequently, draining the liquid requires operators to open the drain valve every four hours and monitor the sound of the discharge to determine whether the liquid has been drained. This entirely manual process is not only inefficient but also extremely inaccurate. Operators must constantly monitor the draining process; even the slightest oversight can lead to incomplete or excessive draining.

[0003] After modifying the existing technology to use a timer to control the liquid discharge, new problems emerged. Discharge frequently occurred with or without liquid present, making accurate discharge nearly impossible. Furthermore, the discharge of excess gas caused severe splashing in the purge liquid collection tank. This not only resulted in liquid waste but also potentially polluted surrounding equipment and the environment, disrupting normal production. Therefore, an automatic liquid discharge controller for separation vessels was urgently needed. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic liquid discharge controller for a separation container, so as to overcome the shortcomings of the prior art of reliance on manual labor, low efficiency and low accuracy.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] An automatic liquid discharge controller for a separation container includes an outer cylinder, an inner cylinder disposed within the outer cylinder, a magnetic reed float rod connected to the inner wall of the upper portion of the outer cylinder, one end of the magnetic reed float rod exposed outside the outer cylinder, and the other end suspended inside the outer cylinder; a limited position balancing siphon is connected between the outer side wall of the bottom of the inner cylinder and the inner side wall of the bottom of the outer cylinder. The limited position balancing siphon ensures that there is always a sufficient liquid level in the outer cylinder, while ensuring that there is no liquid in the inner cylinder, sealing the discharge port, and realizing intelligent control;

[0007] Two inner floats are arranged inside the inner cylinder body. The configuration of the two inner floats can ensure that there is sufficient gravity to press down and close the discharge outlet in the absence of liquid without affecting the buoyancy of the lower float, thereby preventing leakage and ensuring reliable operation. A discharge valve seat is arranged at the bottom of the inner cylinder body, and an inner cylinder discharge outlet is arranged at the bottom of the discharge valve seat. The inner cylinder discharge outlet is connected to the inner cylinder discharge pipe, and an automatic pressure compensation control valve is arranged on the inner cylinder discharge pipe. The main function of the automatic pressure compensation control valve is to achieve gas-liquid pressure balance, rely on a spring to control the valve closing, rely on liquid thrust to realize the valve opening, and realize opening with liquid and closing without liquid.

[0008] Furthermore, the position-limiting balancing siphon is connected to the outer wall of the bottom of the inner cylinder and extends upward, the top of the position-limiting balancing siphon is higher than the top of the inner cylinder and then extends downward, and the bottom of the position-limiting balancing siphon is lower than the bottom of the inner cylinder but higher than the inner cylinder discharge port.

[0009] Furthermore, the upper end of the reed float rod is connected to an upper float ball, and the lower end of the reed float rod is connected to a lower float ball. The upper float ball is higher than the inner cylinder and higher than the top of the limit balance siphon tube, and the lower float ball is lower than the top of the limit balance siphon tube.

[0010] Furthermore, the diameter of the inner float is smaller than the diameter of the inner cylinder and larger than the diameters of the upper float and the lower float.

[0011] Furthermore, the automatic pressure-compensating control valve includes a control valve inner cavity and a sealing piston; a liquid connection port is provided at one end of the control valve inner cavity, a valve body discharge port is provided at the side of the control valve inner cavity, the sealing piston is provided at the liquid connection port, and a spring is connected to the end of the sealing piston away from the liquid connection port.

[0012] Furthermore, an outer cylinder discharge port is provided at the lower portion of the outer cylinder body, and the outer cylinder discharge port is connected to a solenoid valve.

[0013] Furthermore, the end of the reed float rod exposed outside the outer cylinder is connected to the relay. The reed float rod is used in conjunction with the relay to trigger the solenoid valve to ensure that low voltage drives high voltage and prevent the reed switch from burning out due to high voltage.

[0014] Furthermore, an outer cylinder inlet is provided on the outer side of the top of the outer cylinder.

[0015] Furthermore, an inner cylinder cover is provided on the top of the inner cylinder, and the inner cylinder cover is connected to the top of the inner cylinder by using threads.

[0016] Furthermore, the discharge valve seat is provided with two inner cylinder discharge ports. When the discharge volume is large or quick discharge is required, the two inner cylinder discharge ports can ensure timely discharge of the liquid, avoid excessive pressure inside the inner cylinder body, and improve the reliability and stability of the device; avoid the problem of being unable to continue to use after only one inner cylinder discharge port is blocked.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The present invention provides an automatic liquid discharge controller for a separation container. Through the coordinated cooperation of an outer cylinder, an inner cylinder, a magnetic reed float rod, a position-limiting balancing siphon, a discharge valve seat, and an inner float, when liquid-containing gas enters the outer cylinder, the liquid level gradually rises. When the liquid level approaches the top of the position-limiting balancing siphon, the liquid is pressed into the inner cylinder due to the pressure difference, and the liquid level gradually rises within the inner cylinder. As the liquid level rises, the inner float is lifted up by buoyancy, causing the inner float to detach from the discharge valve seat, and the liquid is discharged from the inner cylinder discharge port provided at the bottom of the discharge valve seat. The present invention utilizes a perfect combination of a magnetic reed float rod, a position-limiting balancing siphon, and an inner float, which can automatically adjust and control the discharge according to the liquid level, achieving the goal of draining liquid without exhausting gas. This reduces the labor and inaccurate operation caused by manual operation in the operation interface for gas-liquid separation operations requiring the collection and discharge of liquid, while also achieving automated and intelligent management. It is not only efficient and fast, but also safe and reliable, providing a technical support for modern management and safe operation and maintenance. The utility model can be applied to the liquid discharge operation of various low-pressure gas-liquid separation containers.

[0019] Specifically, the utility model also adopts an automatic pressure compensation control valve, which relies on a spring to control the valve closing and relies on liquid thrust to realize the valve opening, so that it can be opened with liquid and closed without liquid, thereby achieving gas-liquid pressure balance.

[0020] Specifically, the utility model is also provided with a backup solenoid valve discharge, the outer cylinder discharge outlet is connected to the solenoid valve, and the end of the reed float rod exposed outside the outer cylinder is connected to the relay; when the inner float fails, the reed float rod cooperates with the relay to trigger the solenoid valve to ensure that low voltage drives high voltage, preventing the reed switch from burning out due to high voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of an automatic liquid discharge controller for a separation container in an embodiment of the present utility model.

[0022] Figure 2This is a schematic diagram of an automatic pressure compensation control valve of an automatic liquid discharge controller for a separation container in an embodiment of the present utility model.

[0023] In the figure, 1. Outer cylinder; 2. Inner cylinder; 3. Outer cylinder inlet; 4. Limit balancing siphon; 5. Upper float; 6. Inner cylinder discharge outlet; 7. Inner cylinder discharge pipe; 8. Float rod with magnetic spring; 9. Solenoid valve; 10. Inner cylinder cover; 11. Discharge valve seat; 14. Lower float; 15. Automatic pressure compensation control valve; 16. Inner float; 19. Control valve cavity; 21. Liquid connection port; 22. Valve body discharge outlet; 23. Spring; 24. Sealing piston. DETAILED DESCRIPTION

[0024] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The utility model provides an automatic liquid discharge controller for a separation container, comprising an outer cylinder 1, an outer cylinder inlet 3 is provided on the outer side of the top of the outer cylinder 1, an inner cylinder 2 is provided inside the outer cylinder 1, a magnetic spring float rod 8 is connected to the inner wall of the upper part of the outer cylinder 1, one end of the magnetic spring float rod 8 is exposed outside the outer cylinder 1 and is fixed to the outer cylinder 1 by bolts, and the other end of the magnetic spring float rod 8 is suspended inside the outer cylinder 1; a limited position balancing siphon 4 is connected between the outer side wall of the bottom of the inner cylinder 2 and the inner side wall of the bottom of the outer cylinder 1, and the magnetic spring float rod 8 is connected to the inner wall of the upper part of the outer cylinder 1. The upper end of the ball rod 8 is connected to an upper float 5, and the lower end of the magnetic reed float rod 8 is connected to a lower float 14. The upper float 5 is higher than the top of the inner cylinder 2 and higher than the top of the limit balancing siphon 4, and the lower float 14 is lower than the top of the limit balancing siphon 4. The upper float 5 and the lower float 14 can sense the changes in liquid level. When the liquid level accumulated inside the outer cylinder 1 exceeds the top of the limit balancing siphon 4, the limit balancing siphon 4 produces a siphon phenomenon due to the pressure difference, and sucks the liquid inside the outer cylinder 1 into the inner cylinder 2.

[0027] Two inner floats 16 are provided inside the inner cylinder 2. A double inner float connection is adopted to prevent overturning and increase gravity to facilitate sealing. The diameter of the inner float 16 is smaller than the diameter of the inner cylinder 2 and larger than the diameters of the upper float 5 and the lower float 14. A discharge valve seat 11 is provided at the bottom of the inner cylinder 2. The discharge valve seat 11 is a semicircular valve seat. An inner cylinder discharge port 6 is provided at the bottom of the discharge valve seat 11. The buoyancy of the liquid sucked into the inner cylinder 2 lifts the two inner floats 16 from the bottom of the discharge valve seat 11, so that the inner float 16 and the discharge valve seat 11 are separated and leak out of the inner cylinder discharge port 6. The inner cylinder discharge port 6 is connected to the inner cylinder discharge pipe 7, and the liquid is discharged through the inner cylinder discharge pipe 7.

[0028] An automatic pressure-compensating control valve 15 is provided on the inner tube discharge pipe 7, and the automatic pressure-compensating control valve 15 includes a control valve inner cavity 19 and a sealing piston 24; a liquid connection port 21 is provided at one end of the control valve inner cavity 19, and a valve body discharge port 22 is provided on the side of the control valve inner cavity 19, and the sealing piston 24 is provided at the liquid connection port 21, and a spring 23 is connected to the end of the sealing piston 24 away from the liquid connection port 21; in the initial state, if the pressure is low, the spring 23 is in a naturally extended state, and the sealing piston 24 blocks one end of the control valve inner cavity 19 under the action of the spring 23 to prevent gas from leaking from one end of the control valve inner cavity 19; when a fluid mixed with liquid and gas enters the control valve inner cavity 19, the pressure of the liquid gradually increases with the accumulation of liquid. If the liquid pressure is insufficient to overcome the elastic force of the spring 23 at this time, the sealing piston 24 will remain blocked at one end of the control valve cavity 19, and the liquid will not be discharged from the valve body outlet 22. When the liquid pressure continues to increase and reaches a certain level, the liquid pressure will overcome the elastic force of the spring 23 and push the sealing piston 24 toward one end of the control valve cavity 19. At this time, one end of the control valve cavity 19 opens, and gas enters the control valve cavity 19, interacting with the pressure of the liquid to achieve pressure compensation. At the same time, as the pressure balance is adjusted, the liquid is discharged from the valve body outlet 22 under the action of pressure. The automatic pressure compensation control valve 15 can automatically adjust the entry of gas and the discharge of liquid according to the pressure changes of the fluid, achieving precise control and stable discharge of the gas-liquid mixed fluid.

[0029] In some preferred embodiments of the present invention, the discharge valve seat 11 is provided with two inner cylinder discharge ports 6. When the discharge volume is large or rapid discharge is required, the two inner cylinder discharge ports 6 can ensure timely discharge of the liquid, avoid excessive pressure inside the inner cylinder body 2, and improve the reliability and stability of the device; and avoid the problem of being unable to continue to use after only one inner cylinder discharge port 6 is blocked.

[0030] In some preferred embodiments of the present invention, an inner cylinder cover 10 is provided on the top of the inner cylinder 2. The inner cylinder cover 10 is connected to the top of the inner cylinder 2 by threads, so that the inner float 16 can be easily taken out and cleaned.

[0031] In some preferred embodiments of the present invention, an outer cylinder discharge port is provided at the lower portion of the outer cylinder 1, connected to a solenoid valve 9. The end of the reed float rod 8 exposed outside the outer cylinder 1 is connected to a relay. The solenoid valve 9 relies on the relay to provide a switching signal, and the relay relies on the exposed reed float rod 8 to trigger closure and provide a signal. The relay is placed in the air compressor PLC cabinet. When the inner float 16 becomes stuck and cannot open, or liquid discharge is delayed, the liquid level in the outer cylinder 1 continues to rise and rises to the position of the upper float 5 of the reed float rod 8, triggering the reed float rod 8 to switch, connect the relay power supply, open the solenoid valve 9, and liquid enters the outer cylinder discharge port. The discharge pressure balances the inner float 16, causing it to open synchronously, increasing the discharge volume and achieving the required discharge volume.

[0032] Working principle:

[0033] When working in a liquid-free state, the pressure is balanced and no valve will open; when liquid-containing gas enters the outer cylinder 1 from the outer cylinder inlet 3, the inner float 16 in the inner cylinder 2 falls and automatically combines with the discharge valve seat 11 due to the absence of liquid, and the discharge valve seat 11 and the inner cylinder discharge port 6 are closed under the action of pressure. When the liquid level in the outer cylinder 1 gradually accumulates and slowly rises, when the liquid level approaches the top of the limit-balancing siphon 4, the liquid is pressed into the inner cylinder 2 due to the pressure difference, and the liquid level in the inner cylinder 2 is gradually raised. As the liquid level rises, the inner float 16 is separated from the discharge valve seat 11 under the action of buoyancy, exposing the inner cylinder discharge port 6, and the liquid enters the discharge pipe 7 and enters the automatic pressure compensation control valve 15. When the accumulated energy of the liquid reaches the compression force of the spring 23 in the automatic pressure compensation control valve 15, it pushes the sealing piston 24 to move, realizing The drainage is started, and a siphon effect is generated, which, together with the pressure inside the outer cylinder 1, draws the liquid in the outer cylinder 1 into the inner cylinder 2 through the limit-balancing siphon 4. When the liquid in the outer cylinder 1 is lower than the inlet of the limit-balancing siphon 4, gas enters, the siphon stops, and the outer cylinder 1 continues to accumulate liquid. When there is no liquid in the inner cylinder 2, the inner float 16 returns to the discharge valve seat 11. The discharge valve seat 11 is set to be smaller for convenient sealing and to prevent the suction from being too large to open, and is closed under the action of pressure to stop the drainage; when the inner float 16 is sucked and cannot be opened or the liquid volume increases and the discharge outlet is not discharged in time, the liquid level in the outer cylinder 1 continues to rise and rises to the position of the upper float 5 of the magnetic reed float rod 8, triggering the magnetic reed float rod 8 to switch on the relay power supply, open the solenoid valve 9, and the liquid enters the discharge outlet of the outer cylinder, which pushes the inner float 16 to open and increase the discharge volume at the same time, thereby preventing liquid accumulation.

[0034] Throughout this specification, references to terms such as "some embodiments," "optionally," "further," or "some examples" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic liquid discharge controller for a separation container, characterized in that: The invention comprises an outer cylinder (1), an inner cylinder (2) is arranged inside the outer cylinder (1), a magnetic reed float rod (8) is connected to the upper part of the outer cylinder (1), one end of the magnetic reed float rod (8) is exposed outside the outer cylinder (1), and the other end is suspended inside the outer cylinder (1); a limited position balancing siphon (4) is connected between the outer side wall of the bottom of the inner cylinder (2) and the inner side wall of the bottom of the outer cylinder (1), two inner floats (16) are arranged inside the inner cylinder (2), a discharge valve seat (11) is arranged at the bottom of the inner cylinder (2), an inner cylinder discharge port (6) is arranged at the bottom of the discharge valve seat (11), the inner cylinder discharge port (6) is connected to the inner cylinder discharge pipe (7), and an automatic pressure compensation control valve (15) is arranged on the inner cylinder discharge pipe (7).

2. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: The position-limiting balancing siphon (4) is connected to the outer side wall of the bottom of the inner cylinder (2) and extends upward, the top of the position-limiting balancing siphon (4) is higher than the top of the inner cylinder (2) and then extends downward, and the bottom of the position-limiting balancing siphon (4) is lower than the bottom of the inner cylinder (2) but higher than the inner cylinder discharge port (6).

3. The automatic liquid discharge controller for a separation container according to claim 2, characterized in that: The upper end of the magnetic reed float rod (8) is connected to an upper float ball (5), and the lower end of the magnetic reed float rod (8) is connected to a lower float ball (14). The upper float ball (5) is higher than the top of the inner cylinder (2) and higher than the top of the limit balance siphon (4), and the lower float ball (14) is lower than the top of the limit balance siphon (4).

4. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: The diameter of the inner floating ball (16) is smaller than the diameter of the inner cylinder (2) and larger than the diameters of the upper floating ball (5) and the lower floating ball (14).

5. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: The automatic pressure-compensating control valve (15) comprises a control valve inner cavity (19) and a sealing piston (24); a liquid connection port (21) is provided at one end of the control valve inner cavity (19), a valve body discharge port (22) is provided on the side of the control valve inner cavity (19), the sealing piston (24) is provided at the liquid connection port (21), and a spring (23) is connected to the end of the sealing piston (24) away from the liquid connection port (21).

6. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: An outer cylinder discharge port is provided at the lower portion of the outer cylinder body (1), and the outer cylinder discharge port is connected to a solenoid valve (9).

7. The automatic liquid discharge controller for a separation container according to claim 6, characterized in that: One end of the magnetic reed float rod (8) exposed outside the outer cylinder (1) is connected to a relay.

8. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: An outer cylinder inlet (3) is provided on the outer side of the top of the outer cylinder (1).

9. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: An inner cylinder cover (10) is provided on the top of the inner cylinder (2), and the inner cylinder cover (10) is connected to the top of the inner cylinder (2) by means of threads.

10. The automatic liquid discharge controller for a separation container according to claim 1, characterized in that: The discharge valve seat (11) is provided with two inner cylinder discharge ports (6).

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