CN215932465U

CN215932465U - Liquid level automatic control device of gas-liquid separator

Info

Publication number: CN215932465U
Application number: CN202122719274.4U
Authority: CN
Inventors: 宋秀强; 梁志会; 张岩; 尹莎; 迟小鸣
Original assignee: Jereh Oil and Gas Engineering Corp
Current assignee: Jereh Oil and Gas Engineering Corp
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-03-01
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a liquid level automatic control device of a gas-liquid separator, which comprises a barrel arranged outside the gas-liquid separator and a liquid level switch arranged on the barrel, wherein the barrel is connected with the gas-liquid separator through a communication pipeline, a stop valve is arranged on the communication pipeline, the communication pipeline comprises a low-level pipeline and a high-level pipeline, the liquid level switch comprises a high-level switch and a low-level switch, and the installation height of the high-level switch is lower than the height of the high-level pipeline and/or the installation height of the low-level switch is higher than the height of the low-level pipeline. The utility model realizes the control function of the liquid level of the separator by the connection of the cylinder outside the separator, and solves the problems of insufficient design space and easy interference on the separator shell; when the gas-liquid separator needs to be maintained, the cylinder can be detached for maintenance only by closing the stop valve, the gas-liquid separator is not stopped during maintenance, and meanwhile, the gas-liquid separator is convenient and quick to maintain and low in maintenance cost.

Description

Liquid level automatic control device of gas-liquid separator

Technical Field

The utility model relates to a liquid level automatic control device of a gas-liquid separator, belonging to the technical field of gas-liquid separation equipment.

Background

In the design of a natural gas compressor unit, before gas enters a cylinder for compression, liquid drops contained in the gas need to be separated through a separator, separated liquid can be stored in the separator for a short time and is discharged through a separator blowdown system, a shell of the separator is usually provided with a punching and liquid level switch for controlling the liquid level in the gas-liquid separator, on one hand, the gas-liquid separator serves as skid-mounted equipment, a cylinder body of the separator can be provided with other parts or other external pipelines, so that the space on the shell of the separator is limited, the punching position on the gas-liquid separator is limited, if the hole is punched directly, the problem of interference often occurs, on the other hand, once the liquid level switch has problems and needs to be maintained, the liquid level switch directly arranged on the shell of the gas-liquid separator needs to stop the gas-liquid separator, and then the gas-liquid separator can be maintained, affecting the separation efficiency of the separator.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the automatic liquid level control device of the gas-liquid separator, which has the advantages of simple structure, convenient operation, less occupied space of a separator shell, no need of stopping the gas-liquid separator and convenient maintenance.

The technical scheme for solving the technical problems is as follows: the utility model provides a vapour and liquid separator's liquid level automatic control device, is in including setting up barrel and the setting outside vapour and liquid separator liquid level switch on the barrel, the barrel through the intercommunication pipeline with vapour and liquid separator connects, be equipped with the trip valve on communicating pipe, the intercommunication pipeline includes low level pipeline and high level pipeline, liquid level switch includes high liquid level switch and low liquid level switch, high liquid level switch's mounting height is less than high level pipeline place height and/or low liquid level switch's mounting height is higher than low level pipeline place height.

The liquid level switch has the advantages that in order to further ensure the accuracy of liquid drainage and liquid drainage stopping, the position of the liquid level switch and a pipeline are further optimized, the height difference exists between the installation height of the liquid level switch and the inlet and the outlet of the barrel, the high liquid level switch can contact liquid firstly in the liquid level rising process, the control system receives a signal of the high liquid level switch to control liquid drainage, the liquid drainage is triggered more timely relative to the high liquid level switch arranged in parallel with the pipeline, the liquid level falling process is carried out, and when the liquid level does not reach the low-level pipeline, the low liquid level switch is triggered and sends a signal to the control system to stop the liquid drainage in time. The cylinder body is communicated with the separator, the liquid level switch is not required to be directly arranged on a shell of the separator with limited space, and can be directly arranged on the cylinder body, the control function of the liquid level of the separator is realized through a form structure of connecting the cylinder body outside the separator, and the problems that the design space on the shell of the separator is insufficient and the separator is easy to interfere with other parts are solved; when the barrel structure or the liquid level switch has problems and needs to be maintained, the barrel can be detached for maintenance only by closing the stop valve, the operation of the gas-liquid separator cannot be influenced in the maintenance process, and meanwhile, the maintenance is convenient and fast, and the maintenance cost is low.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the number of the high liquid level switches is two.

Adopt above-mentioned further scheme's beneficial effect to be, set up two high liquid level switches in high-order position on the barrel, the blowdown control signal can alternate, further ensures liquid level control's accuracy and stability, even if one of them liquid level switch goes wrong, can not influence liquid level automatic control yet.

Furthermore, the number of the low liquid level switches is two.

Adopt above-mentioned further scheme's beneficial effect to be, set up two low liquid level switches in the high-order position on the barrel, the blowdown control signal can alternate, further ensures liquid level control's accuracy and stability, even if one of them liquid level switch goes wrong, can not influence liquid level automatic control yet.

Further, still include the barrel holder, the barrel sets up on the barrel holder.

Adopt above-mentioned further scheme's beneficial effect to be, the barrel can support through the pipeline, but long-time the use probably influences the life of pipeline, so support the barrel through addding the barrel holder, extension pipeline life.

Furthermore, a drain valve and an emptying valve are arranged on the barrel body.

The beneficial effect who adopts above-mentioned further scheme is that, concrete blowoff valve setting is in the bottom of barrel, and the atmospheric valve setting can be cleared up in the barrel through blowoff valve and atmospheric valve at the top of barrel, and gas-liquid separator's liquid gets into clean environment in the barrel, can guarantee liquid level switch and detect the accuracy.

Further, the height difference between the high-level switch and the high-level pipeline is 30-70 mm.

The beneficial effect of adopting above-mentioned further scheme is that, the high liquid level of detection that proper amount difference in order to guarantee that high liquid level switch can be accurate, control system can be accurate control vapour and liquid separator fast flowing back.

Further, the height difference between the low-level switch and the low-level pipeline is 30-70 mm.

The beneficial effect of adopting above-mentioned further scheme is that, the low liquid level that the low liquid level switch can be accurate is guaranteed to proper amount of difference in height, and control system can be accurate control gas-liquid separator stop flowing back.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic diagram of the right view structure of the present invention;

in the figure, 1, a cylinder; 2. a high liquid level switch; 3. a low level switch; 4. a high-level pipeline; 5. a low-level pipeline; 6. a shut-off valve; 7. a barrel frame; 8. a blowoff valve; 9. an atmospheric valve; 10. a gas-liquid separator; 11. a high interface; 12. a low interface.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.

As shown in fig. 1-3, a vapour and liquid separator's liquid level automatic control device, including setting up barrel 1 outside vapour and liquid separator 10 and setting up liquid level switch on the barrel 1, barrel 1 through the intercommunication pipeline with vapour and liquid separator 10 connects, be equipped with trip valve 6 on the intercommunication pipeline, the intercommunication pipeline includes low level pipeline 5 and high level pipeline 4, liquid level switch includes high liquid level switch 2 and low liquid level switch 3, high liquid level switch 2's mounting height is less than high level pipeline 4 place height and/or low liquid level switch 3's mounting height is higher than low level pipeline 5 place height.

The high liquid level switch 2 is provided with two. Two high liquid level switches 2 are arranged at a high position on the barrel body 1, a pollution discharge control signal can be selected alternatively, the accuracy and the stability of liquid level control are further ensured, and even if one of the liquid level switches goes wrong, the automatic liquid level control cannot be influenced.

Two low liquid level switches 3 are arranged. Two low liquid level switches 3 are arranged at a high position on the barrel body 1, a pollution discharge control signal can be selected alternatively, the accuracy and the stability of liquid level control are further ensured, and even if one of the liquid level switches goes wrong, the automatic liquid level control cannot be influenced.

The barrel is characterized by further comprising a barrel frame 7, and the barrel body 1 is arranged on the barrel frame 7. The barrel 1 can be supported by a pipeline, but the service life of the pipeline can be influenced by long-time use, so the barrel 1 is supported by additionally arranging the barrel frame 7, and the service life of the pipeline is prolonged.

And a drain valve 8 and an emptying valve 9 are arranged on the barrel body 1. The specific blowoff valve 8 is arranged at the bottom of the barrel body 1, the emptying valve 9 is arranged at the top of the barrel body 1, the interior of the barrel body 1 can be cleaned through the blowoff valve 8 and the emptying valve 9, and the liquid of the gas-liquid separator 10 enters the clean environment in the barrel body 1, so that the detection accuracy of the liquid level switch can be ensured.

The height difference between the high liquid level switch 2 and the high-level pipeline 4 is 30-70 mm. The proper amount of height difference and the proper amount of height difference can be about 50mm, so that the high liquid level switch 2 can accurately detect the high liquid level, and the control system can accurately control the gas-liquid separator 10 to discharge liquid quickly.

The height difference between the low liquid level switch 3 and the low-level pipeline 5 is 30-70 mm. The proper height difference can be about 50mm if so, so that the low liquid level switch 3 can accurately detect the low liquid level of the gas-liquid separator 10, and the control system can accurately control the gas-liquid separator 10 to stop liquid drainage.

The gas-liquid separator 10 is connected with the cylinder 1 through a communicating pipeline, a valve is arranged on the communicating pipeline, only two interfaces, namely a high interface and a low interface, need to be arranged on the shell of the gas-liquid separator 10, the problem of limited space on the shell of the gas-liquid separator 10 is effectively solved, the installation position of the liquid level switch is transferred to the outer side of the shell of the gas-liquid separator 10, the surrounding space is fully utilized, in order to ensure the accuracy and stability of control signals, four interfaces are designed on the cylinder 1, namely two high interfaces 11 and two low interfaces 12, if the four interfaces are directly arranged on the shell of the gas-liquid separator 10, the space is obviously limited, the installation of other parts or pipelines can be hindered, the four interfaces are respectively provided with a high liquid level switch 2 and a low liquid level switch 3, the liquid level switch at the high position outputs a liquid drainage starting signal, and the liquid level switch at the low liquid level outputs a liquid drainage stopping signal, the liquid drainage starting signal and the liquid drainage stopping signal are uniformly transmitted to a control valve of a drainage system of the gas-liquid separator 10 through a PLC control system, and the liquid level in the gas-liquid separator 10 is controlled by controlling the opening and closing of the drainage control valve of the gas-liquid separator 10; when the liquid level in the gas-liquid separator 10 reaches the height of the low connector 12, the liquid flows into the barrel 1 through the low connector 12, and along with the rise of the liquid level in the gas-liquid separator 10, the liquid level in the barrel 1 rises, when the liquid level in the cylinder body 1 reaches the height of the high liquid level switch 2, the high liquid level switch 2 triggers a signal to the PLC, a blowdown control valve of the gas-liquid separator 10 is opened to start liquid discharge, the liquid level is reduced along with the opening, when the liquid level is reduced to the height of the low liquid level switch 3, the low liquid level switch 3 triggers a signal to the PLC, a blowdown control valve of the gas-liquid separator 10 is closed, the separator stops draining liquid, when the structure of the cylinder body 1 and the liquid level switch need to be overhauled, the cylinder body 1 can be disassembled and maintained by directly closing the connected valve stop valve 6, the gas-liquid separator 10 can keep the running state in the maintenance process, and the maintenance cost is low by adopting the control device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a vapour and liquid separator's liquid level automatic control device, its characterized in that is in including setting up barrel (1) and the setting outside vapour and liquid separator liquid level switch on barrel (1), barrel (1) through the intercommunication pipeline with vapour and liquid separator connects, be equipped with trip valve (6) on communicating pipe, the intercommunication pipeline includes low level pipeline (5) and high level pipeline (4), liquid level switch includes high liquid level switch (2) and low liquid level switch (3), the mounting height of high liquid level switch (2) is less than high level pipeline (4) place height and/or the mounting height of low liquid level switch (3) is higher than low level pipeline (5) place height.

2. The automatic liquid level control device of a gas-liquid separator according to claim 1, wherein there are two high level switches (2).

3. The automatic liquid level control device of a gas-liquid separator according to claim 1 or 2, characterized in that there are two low level switches (3).

4. The automatic liquid level control device of a gas-liquid separator according to claim 1, further comprising a cartridge holder (7), wherein the cartridge (1) is disposed on the cartridge holder (7).

5. The automatic liquid level control device of a gas-liquid separator according to claim 1, wherein a blowdown valve (8) and an emptying valve (9) are provided on the cylinder (1).

6. The automatic liquid level control device of a gas-liquid separator according to claim 1, wherein the height difference between the high level switch (2) and the high level pipeline (4) is 30-70 mm.

7. The automatic liquid level control device of a gas-liquid separator according to claim 1, wherein the height difference between the low level switch (3) and the low level pipe (5) is 30-70 mm.