Side-mounted liquid level meter and gas-liquid separator

Abstract

The invention relates to the technical field of gathering and transportation treatment of petroleum and natural gas, in particular to a side-mounted liquid level meter and a gas-liquid separator. The embodiment of the invention provides a side-mounted liquid level meter. The side-mounted liquid level meter comprises a main pipe body, a first connecting pipe, a second connecting pipe and an extension pipe. The main pipe body is arranged on one side of the gas-liquid separation tank; the first connecting pipe is arranged at the upper end of the main pipe body and is communicated with the gas-liquid separation tank; the second connecting pipe is arranged at the lower end of the main pipe body and is communicated with the bottom of the gas-liquid separation tank; one end of the extension pipe is communicated with the second connecting pipe, the other end of the extension pipe is arranged in the gas-liquid separation tank, a liquid taking opening is formed in the other end of the extension pipe, and liquid in the gas-liquid separation tank enters from the liquid taking opening and sequentially enters the main pipe body through the extension pipe and the second connecting pipe, so that the main pipe body detects the liquid level in the gas-liquid separation tank.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas gathering and transportation processing, and particularly relates to a side-mounted liquid level gauge and a gas-liquid separator. Background Art

[0002] In natural gas production and gas storage production, the produced natural gas entering the station yard will carry liquid. Therefore, it needs to enter the gas-liquid separator for gas-liquid separation. After separation, the gas is discharged into the next process, and the liquid remains in the gas-liquid separation tank. A side-mounted liquid level gauge is required to detect the liquid level in the gas-liquid separation tank to ensure that the liquid is discharged regularly. At the same time, with the expansion and production increase of old blocks and the commissioning of new wells and new devices, natural gas often carries impurities in the bottom hole and pipeline (downhole debris, pipeline inner wall rust, sludge, etc.). These impurities enter the gas-liquid separator with the gas and deposit at the bottom of the tank, which will block the bottom connecting pipe of the side-mounted liquid level gauge. Moreover, some impurities enter the measuring cylinder of the side-mounted liquid level gauge and adsorb to the magnetic float and the guided wave radar measuring rod, resulting in inaccurate display of the liquid level gauge, generating false signals, and bringing risks to safe production. Summary of the Invention

[0003] The present application provides a side-mounted liquid level gauge and a gas-liquid separator, which to a certain extent improves the technical problems in the related art that the impurities deposited at the bottom of the gas-liquid separator tank will block the bottom connecting pipe of the side-mounted liquid level gauge, and some impurities enter the measuring cylinder of the side-mounted liquid level gauge and adsorb to the magnetic float and the guided wave radar measuring rod, resulting in inaccurate display of the liquid level gauge, generating false signals, and bringing risks to safe production.

[0004] In a first aspect, a side-mounted liquid level gauge provided by an embodiment of the present application includes:

[0005] A main body, arranged on one side of the gas-liquid separation tank;

[0006] A first connecting pipe and a second connecting pipe. The first connecting pipe is arranged at the upper end of the main body and is communicated with the gas-liquid separation tank; the second connecting pipe is arranged at the lower end of the main body and is communicated with the bottom of the gas-liquid separation tank;

[0007] An extension pipe, one end of which is communicated with the second connecting pipe, and the other end is arranged in the gas-liquid separation tank. The other end of the extension pipe has a liquid taking port. The liquid in the gas-liquid separation tank enters through the liquid taking port and successively enters the main body through the extension pipe and the second connecting pipe, so that the main body detects the liquid level in the gas-liquid separation tank.

[0008] In some embodiments, the extension pipe is vertically arranged, and the liquid taking port is located at 1 / 10 to 1 / 6 of the height of the gas-liquid separation tank.

[0009] In some embodiments, the side-mounted liquid level gauge further includes a shielding member, which is connected to the extension pipe. The projection of the shielding member along the vertical direction covers the liquid taking port, and a plurality of first through holes are provided on the side surface of the shielding member, and the first through holes are communicated with the liquid taking port.

[0010] In some embodiments, the shielding member includes a cover plate and a plurality of support rods spaced apart at the bottom of the cover plate. The cover plate is located above the liquid taking port, and the lower ends of the support rods are connected to the side portion of the extension pipe. The space between every two adjacent cover plates is configured as the first through hole.

[0011] In a second aspect, an embodiment of the present application provides a gas-liquid separator, which includes a gas-liquid separation tank and the side-mounted liquid level gauge described above.

[0012] In some embodiments, the gas-liquid separator further includes a blowdown pipe. The bottom of the gas-liquid separation tank has a blowdown port, and the blowdown port is arranged on one side of the extension pipe. The blowdown pipe is arranged at the lower part of the gas-liquid separation tank and is communicated with the blowdown port. The side-mounted liquid level gauge further includes a suction shell and a third connecting pipe. The suction shell is arranged in the gas-liquid separation tank and surrounds the extension pipe. A liquid taking cavity is formed between the suction shell and the extension pipe, and a plurality of liquid inlet holes communicated with the liquid taking cavity are provided on the periphery of the suction shell. One end of the third connecting pipe is communicated with the liquid taking cavity, and the other end extends into the blowdown pipe through the blowdown port to discharge impurities in the liquid taking cavity into the blowdown pipe.

[0013] In some embodiments, the third connecting pipe includes a first connecting section and a second connecting section arranged at an angle. The second connecting section is arranged below the first connecting section. The first connecting section is communicated with the liquid taking cavity, and the second connecting section extends into the blowdown pipe through the blowdown port.

[0014] In some embodiments, the gas-liquid separator further includes a fixing seat, which is fixedly arranged at the bottom of the gas-liquid separation tank. The fixing seat is provided with a second through hole corresponding to the blowdown port. The third connecting pipe is fixedly arranged in the fixing seat, and the other end of the third connecting pipe extends into the blowdown pipe through the second through hole and the blowdown port in sequence.

[0015] In some embodiments, the gas-liquid separator further includes a drain pipe. The bottom of the gas-liquid separation tank has a drain port, which is disposed on one side of the extension pipe. The drain pipe is disposed at the lower part of the gas-liquid separation tank and communicates with the drain port. The side-mounted liquid level gauge further includes a suction housing and a third connecting pipe. The suction housing is disposed in the gas-liquid separation tank and surrounds the extension pipe. A liquid extraction cavity is formed between the suction housing and the extension pipe, and a plurality of liquid inlet holes communicating with the liquid extraction cavity are provided on the circumferential side of the suction housing. One end of the third connecting pipe communicates with the liquid extraction cavity, and the other end extends into the drain pipe through the drain port to discharge the impurities in the liquid extraction cavity into the drain pipe.

[0016] In some embodiments, the gas-liquid separator further includes an anti-vortex device, which is correspondingly disposed with the drain port, and the third connecting pipe is fixedly disposed in the anti-vortex device.

[0017] The beneficial effects of the present application are as follows:

[0018] A side-mounted liquid level gauge and a gas-liquid separator provided by the present application are provided with an extension pipe. One end of the extension pipe communicates with the second connecting pipe, and the other end is disposed in the gas-liquid separation tank. The other end of the extension pipe has a liquid extraction port. The liquid in the gas-liquid separation tank enters the main pipe body through the liquid extraction port. That is, compared with the related art in which the liquid directly enters the main pipe body from the bottom of the gas-liquid separation tank, the position of the liquid extraction port is raised in the present application. The impurities in the gas-liquid separation tank are mainly deposited at the bottom of the tank, and the higher the position, the fewer the impurities. Therefore, the liquid entering through the liquid extraction port in the present application carries fewer impurities, thereby improving the blockage problem of the side-mounted liquid level gauge and the problem of inaccurate liquid level display in the related art to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0020] Figure 1 Structural schematic diagram of the gas-liquid separator provided by the embodiment of the present application Figure 1 。

[0021] Figure 2 For Figure 1 Partial side view.

[0022] Figure 3 For Figure 1 Partial enlarged view.

[0023] Figure 4 Structural schematic diagram of the gas-liquid separator provided by the embodiment of the present application Figure 2 。

[0024] Description of the reference numerals:

[0025] 1 - Gas - liquid separator, 100 - Side - mounted liquid level gauge, 110 - Main pipe body, 120 - First connecting pipe, 130 - Second connecting pipe, 140 - Extension pipe, 141 - Liquid extraction port, 150 - Shielding member, 151 - Cover plate, 152 - Support rod, 153 - First through - hole, 160 - Suction shell, 161 - Liquid inlet hole, 200 - Gas - liquid separation tank, 210 - Drain port, 220 - Drain pipe, 230 - Third connecting pipe, 231 - First connecting section, 232 - Second connecting section, 240 - Fixed seat, 241 - Second through - hole, 250 - Liquid discharge port, 260 - Liquid discharge pipe, 270 - Anti - vortex device. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0027] It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0028] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] In natural gas production and storage in gas storage caverns, the produced natural gas entering the station will carry liquids. Therefore, it needs to enter a gas-liquid separator for gas-liquid separation. After separation, the gas is discharged and enters the next process, while the liquid remains in the gas-liquid separation tank. A side-mounted level gauge is required to detect the liquid level in the gas-liquid separation tank to ensure that the liquid is discharged regularly. A side-mounted level gauge is a common device for measuring the liquid level in a liquid container. Through the action of electromagnetic force, it can realize the function of remotely transmitting liquid level data. At the same time, with the expansion and production increase of old blocks and the commissioning of new wells and new devices, natural gas often carries impurities at the bottom of the well and in the pipeline (downhole debris, rust on the inner wall of the pipeline, sludge, etc.). These impurities enter the gas-liquid separator with the gas and deposit at the bottom of the tank.

[0031] In the related art, the connecting pipe orifice of the side-mounted level gauge and the gas-liquid separation tank is also located at the bottom of the tank. Therefore, when the liquid in the gas-liquid separation tank enters the side-mounted level gauge through the connecting pipe orifice, a large amount of impurities will also enter the connecting pipe orifice, thus causing blockage of the connecting pipe. Moreover, some impurities will adsorb onto the magnetic float and the guided wave radar measuring rod after entering the measuring cylinder of the side-mounted level gauge, resulting in inaccurate display of the level gauge and generating false signals, bringing risks to safe production.

[0032] Since the sewage outlet of the gas-liquid separator is far from the connecting pipe orifice of the level gauge, opening the sewage pipeline during operation cannot remove the impurities at the connecting pipe orifice of the level gauge, and it is also impossible to stop the operation of the gas-liquid separator to clean the impurities. Therefore, during production operation, the bottom drain valve of the measuring cylinder of the level gauge is usually opened, and the high-pressure liquid in the gas-liquid separator is used for on-site discharge and flushing to solve the blockage problem of the connecting pipe of the gas-liquid separator. Then, the drain valve of the measuring cylinder is closed. However, this operation not only has safety risks, but also the external discharge of condensate oil and impurities does not meet environmental protection requirements.

[0033] In order to improve the problems in the related art to a certain extent, the embodiments of the present application provide a side-mounted level gauge and a gas-liquid separator, which raise the liquid taking orifice of the side-mounted level gauge and the gas-liquid separation tank from the bottom of the tank to the middle of the tank. Since the impurities in the gas-liquid separation tank are mainly deposited at the bottom of the tank, and the higher the position, the fewer the impurities, the liquid entering through the liquid taking orifice in the present application will carry fewer impurities, thus improving the blockage problem of the side-mounted level gauge and the problem of inaccurate level gauge display in the related art to a certain extent.

[0034] Next, the embodiments of the present application will be described with reference to the accompanying drawings:

[0035] Combined with Figures 1 - 3, A side-mounted liquid level gauge 100 provided by an embodiment of the present application includes a main pipe body 110, a first connecting pipe 120, a second connecting pipe 130, and an extension pipe 140. The main pipe body 110 is disposed on one side of the gas-liquid separation tank 200; the first connecting pipe 120 is disposed at the upper end of the main pipe body 110 and communicates with the gas-liquid separation tank 200; the second connecting pipe 130 is disposed at the lower end of the main pipe body 110 and communicates with the bottom of the gas-liquid separation tank 200; one end of the extension pipe 140 communicates with the second connecting pipe 130, and the other end is disposed in the gas-liquid separation tank 200, and the other end of the extension pipe 140 has a liquid taking port 141. The liquid in the gas-liquid separation tank 200 enters through the liquid taking port 141 and successively enters the main pipe body 110 through the extension pipe 140 and the second connecting pipe 130, so that the main pipe body 110 detects the liquid level in the gas-liquid separation tank 200.

[0036] In the gas-liquid separation tank 200, impurities are mainly deposited at the bottom of the tank under the influence of gravity, and the higher the position, the fewer the impurities. The liquid taking port 141 is the inlet for the liquid in the gas-liquid separation tank 200 to enter the main pipe body 110. In the embodiment of the present application, through the setting of the extension pipe 140, the liquid taking port 141 is raised from the original bottom of the tank to the middle of the tank, so that the impurities carried by the liquid entering through the liquid taking port 141 are greatly reduced, and thus to a certain extent, the purity of the liquid phase in the second connecting pipe 130 is ensured, and the occurrence of blockage, misalignment, and failure accidents of the side-mounted liquid level gauge 100 is improved.

[0037] The vertical height of the extension pipe 140 in the gas-liquid separation tank 200 is the raising height of the liquid taking port 141. The extension pipe 140 can be vertically arranged to make the height of the liquid taking port 141 higher without changing the length of the extension pipe 140, so as to further reduce the impurities entering the liquid taking port 141. Of course, the height of the liquid taking port 141 shall not be higher than the lower limit of the controlled liquid level height in the gas-liquid separation tank 200 to maintain the original liquid level control range. Specifically, the liquid taking port 141 can be located at 1 / 10 to 1 / 6 of the height of the gas-liquid separation tank 200.

[0038] One end of the extension pipe 140 can communicate with the second connecting pipe 130 by being directly inserted into the second connecting pipe 130, so as to facilitate the installation and disassembly of the extension pipe 140 by the operator. Of course, the extension pipe 140 and the second connecting pipe 130 can also be connected by means such as flange connection, and no limitation is made thereto.

[0039] It should be noted that the various electromagnetic components for detecting the liquid surface are disposed in the main pipe body 110. The structures and working principles of the main pipe body 110, the first connecting pipe 120, and the second connecting pipe 130 are the same as those of any side-mounted liquid level gauge 100 in the prior art, and will not be elaborated herein.

[0040] In some embodiments, in order to further reduce the impurities entering the liquid taking port 141, the side-mounted liquid level gauge 100 further includes a shielding member 150. The shielding member 150 is connected to the extension pipe 140. The vertical projection of the shielding member 150 covers the liquid taking port 141, and a plurality of first through holes 153 are provided on the side surface of the shielding member 150. The first through holes 153 are communicated with the liquid taking port 141, so that the liquid in the gas-liquid separation tank 200 enters the liquid taking port 141 through the first through holes 153.

[0041] Since the impurities in the liquid are generally deposited from top to bottom to the bottom of the tank, the liquid taking method in which the liquid flows from top to bottom into the liquid taking port 141 will cause the liquid to carry more impurities. After the shielding member 150 is provided, since the vertical projection of the shielding member 150 covers the liquid taking port 141, the liquid will not flow into the liquid taking port 141 from top to bottom, but enters the liquid taking port 141 from the first through holes 153 on the side, so that the impurities entering the liquid taking port 141 can be further reduced, and the blockage problem of the side-mounted liquid level gauge 100 and the problem that the liquid level gauge display is inaccurate due to impurities can be better improved.

[0042] It is worth mentioning that the overall size of the plurality of first through holes 153 cannot be too small, and sufficient liquid taking space needs to be ensured to ensure the detection efficiency of the side-mounted liquid level gauge 100.

[0043] In some embodiments, the shielding member 150 includes a cover plate 151 and a plurality of support rods 152 spaced apart from the bottom of the cover plate 151. The cover plate 151 is located above the liquid taking port 141. The lower ends of the support rods 152 are connected to the side of the extension pipe 140. The interval between every two adjacent cover plates 151 is configured as the first through hole 153.

[0044] The cover plate 151 and the support rods 152 can be integrally provided. The support rods 152 can be directly welded to the upper end of the extension pipe 140, that is, the cover plate 151, the support rods 152 and the extension pipe 140 are an integral body, which can improve the integration degree.

[0045] For a side-mounted liquid level gauge 100 provided in this application, since an extension pipe 140 is provided, one end of the extension pipe 140 is communicated with the second connecting pipe 130, the other end is arranged in the gas-liquid separation tank 200, and the other end of the extension pipe 140 has a liquid taking port 141. The liquid in the gas-liquid separation tank 200 enters the main body 110 through the liquid taking port 141. That is, compared with the related art in which the liquid directly enters the main body 110 from the bottom of the gas-liquid separation tank 200, in this application, the position of the liquid taking port 141 is raised, and the impurities in the gas-liquid separation tank 200 are mainly deposited at the bottom of the tank. The higher the position, the fewer the impurities. Therefore, the liquid entering through the liquid taking port 141 in this application will carry fewer impurities, and thus to a certain extent, the blockage problem of the side-mounted liquid level gauge 100 and the problem that the liquid level gauge display is inaccurate in the related art are improved.

[0046] Based on the same inventive concept, in combination with Figure 1 and Figure 3 , an embodiment of the present application further provides a gas-liquid separator 1, which includes a gas-liquid separation tank 200 and the side-mounted liquid level gauge 100 described above. The beneficial effects of the gas-liquid separator 1 provided by the embodiment of the present application are the same as those of the side-mounted liquid level gauge 100 described above, and will not be elaborated here.

[0047] Of course, the gas-liquid separator 1 further includes an inlet pipe, an outlet pipe, and a multi-stage separation mechanism. The inlet pipe and the outlet pipe are both arranged at intervals and communicated with the top of the gas-liquid separation tank 200. The multi-stage separation mechanism is arranged inside the gas-liquid separation tank 200. Natural gas enters the gas-liquid separation tank 200 through the inlet pipe. After being separated by the multi-stage separation mechanism, the gas is discharged through the outlet pipe and enters the next process, while the liquid remains in the gas-liquid separation tank 200. The relevant separation components and separation principles in the gas-liquid separator 1 are prior art and will not be elaborated here.

[0048] In some embodiments, in order to prevent the impurity accumulation height at the bottom of the gas-liquid separation tank 200 from being too high and covering the liquid taking port 141, the gas-liquid separator 1 further includes a sewage discharge pipe 220. The bottom of the gas-liquid separation tank 200 has a sewage discharge port 210, and the sewage discharge port 210 is used to drain the sewage in the gas-liquid separation tank 200. The sewage discharge port 210 is arranged on one side of the extension pipe 140. The sewage discharge pipe 220 is arranged at the lower part of the gas-liquid separation tank 200 and communicated with the sewage discharge port 210. The side-mounted liquid level gauge 100 further includes a suction shell 160 and a third connecting pipe 230. The suction shell 160 is arranged in the gas-liquid separation tank 200 and surrounds the extension pipe 140. Both ends of the suction shell 160 can be connected to the extension pipe 140 so as to form a liquid taking cavity between the suction shell 160 and the extension pipe 140. A plurality of liquid inlet holes 161 communicated with the liquid taking cavity are arranged on the circumferential side of the suction shell 160. Thus, the liquid in the gas-liquid separation tank 200 can enter the liquid taking cavity through the liquid inlet holes 161. One end of the third connecting pipe 230 is communicated with the liquid taking cavity, and the other end extends into the sewage discharge pipe 220 through the sewage discharge port 210. Thus, the impurities in the liquid taking cavity can be discharged into the sewage discharge pipe 220 through the third connecting pipe 230, thereby reducing the impurities in the liquid around the extension pipe 140 and avoiding the accumulation of impurities around the extension pipe 140, resulting in more impurities entering the liquid taking port 141.

[0049] Moreover, since the sewage discharge port 210 is used for sewage discharge, after the sewage discharge port 210 is opened, the flow rate of the liquid will increase when flowing into the sewage discharge port 210, and a vortex will be formed under the interaction of inertia and viscous force, thereby generating suction on the surrounding liquid, making the flow rate of the liquid in the third connecting pipe 230 increase, and further accelerating the discharge efficiency of the impurities in the liquid taking cavity, and further reducing the impurities entering the liquid taking port 141.

[0050] In some embodiments, the third connecting pipe 230 includes a first connecting section 231 and a second connecting section 232 arranged at an angle. The second connecting section 232 is disposed below the first connecting section 231. The first connecting section 231 communicates with the liquid extraction cavity, and the second connecting section 232 extends into the sewage discharge pipe 220 through the sewage discharge port 210.

[0051] Since the second connecting section 232 is disposed below the first connecting section 231, that is, after the liquid in the liquid extraction cavity enters the second connecting section 232 through the first connecting section 231, it will naturally flow into the sewage discharge pipe 220 under the action of gravity and be discharged together with other sewage. Specifically, to accelerate the flow rate of the liquid in the second connecting section 232, the first connecting section 231 and the second connecting section 232 can be vertically arranged.

[0052] In some embodiments, in order to fix the third connecting pipe 230, the gas-liquid separator 1 further includes a fixing seat 240. The fixing seat 240 is fixedly arranged at the bottom of the gas-liquid separation tank 200. The fixing seat 240 is provided with a second through hole 241, and the second through hole 241 is correspondingly arranged with the sewage discharge port 210. The third connecting pipe 230 is fixedly arranged in the fixing seat 240, and the other end of the third connecting pipe 230 extends into the sewage discharge pipe 220 through the second through hole 241 and the sewage discharge port 210 in sequence.

[0053] Since the third connecting pipe 230 is arranged in the liquid, in order to prevent the third connection from being affected by the buoyancy of the liquid and leaving the preset position, the fixing seat 240 is used to fix the third connecting pipe 230. The fixing seat 240 can be bonded to the tank wall of the gas-liquid separator 1 with casting glue to achieve fixation.

[0054] Combined with Figure 4 , in some embodiments, the gas-liquid separator 1 further includes a liquid discharge pipe 260. The bottom of the gas-liquid separation tank 200 has a liquid discharge port 250. The liquid discharge port 250 is arranged on one side of the extension pipe 140. The liquid discharge pipe 260 is arranged at the lower part of the gas-liquid separation tank 200 and communicates with the liquid discharge port 250; the side-mounted liquid level gauge 100 further includes a suction shell 160 and a third connecting pipe 230. The suction shell 160 is arranged in the gas-liquid separation tank 200 and surrounds the extension pipe 140. A liquid extraction cavity is formed between the suction shell 160 and the extension pipe 140, and a plurality of liquid inlet holes 161 communicating with the liquid extraction cavity are arranged on the peripheral side of the suction shell 160; one end of the third connecting pipe 230 communicates with the liquid extraction cavity, and the other end extends into the liquid discharge pipe 260 through the liquid discharge port 250 to discharge the liquid or impurities in the liquid extraction cavity into the liquid discharge pipe 260.

[0055] That is, the bottom of the gas-liquid separation tank 200 is provided with a sewage discharge port 210 and a liquid discharge port 250 at the same time. The sewage discharge port 210 is used to manually open and discharge sewage when impurities accumulate, and the liquid discharge port 250 is used to automatically discharge the liquid in the gas-liquid separation tank 200 regularly to achieve continuous utilization. Since both the sewage discharge port 210 and the liquid discharge port 250 are used to discharge liquid, the sundries in the liquid extraction cavity can be discharged either through the sewage discharge port 210 or through the liquid discharge port 250, and no restriction is imposed on this.

[0056] In some embodiments, the gas-liquid separator 1 further includes an anti-vortex device 270. The anti-vortex device 270 is correspondingly arranged with the liquid discharge port 250, and the third connecting pipe 230 is fixedly arranged in the anti-vortex device 270.

[0057] The anti-vortex device 270 is used to prevent vortices, reduce pipeline and equipment damage, and noise pollution. The anti-vortex device 270 is an inherent structure at the liquid discharge port 250 of the gas-liquid separator 1. Therefore, when the sundries in the liquid extraction cavity are discharged through the liquid discharge port 250, the anti-vortex device 270 can be directly used to fix the third connecting pipe 230, so that there is no need to additionally set a fixing seat 240, reducing the manufacturing cost and the labor amount of the operators.

[0058] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0059] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A side-mounted liquid level gauge, characterized in that: include: The main pipe is arranged on one side of the gas-liquid separation tank; A first connecting pipe and a second connecting pipe, wherein the first connecting pipe is disposed at the upper end of the main pipe body and communicates with the gas-liquid separation tank; and the second connecting pipe is disposed at the lower end of the main pipe body and communicates with the bottom of the gas-liquid separation tank; An extension tube, one end of which is connected to the second connecting tube, and the other end of which is arranged in the gas-liquid separation tank, and the other end of the extension tube has a liquid intake port, the liquid in the gas-liquid separation tank enters through the liquid intake port, and the extension tube and the second connecting tube enter the main body in turn, so that the main body can detect the liquid level in the gas-liquid separation tank.

2. The side-mounted liquid level gauge according to claim 1, characterized in that: The extension tube is arranged vertically, and the liquid intake port is located at 1 / 10 to 1 / 6 of the height of the gas-liquid separation tank.

3. The side-mounted liquid level gauge according to claim 1, characterized in that: The side-mounted liquid level gauge also includes a shielding member, which is connected to the extension tube. The shielding member covers the liquid intake port along its vertical projection, and a plurality of first through holes are provided on the side surface of the shielding member, which are connected to the liquid intake port.

4. The side-mounted liquid level gauge according to claim 3, characterized in that: The shielding member includes a cover plate and a plurality of support rods spaced apart at the bottom of the cover plate, the cover plate is located above the liquid intake port, the lower ends of the support rods are connected to the sides of the extension tube, and the interval between each two adjacent cover plates is configured as the first through hole.

5. A gas-liquid separator, characterized in that: It comprises a gas-liquid separation tank and a side-mounted liquid level gauge as described in any one of claims 1 to 4.

6. The gas-liquid separator according to claim 5, characterized in that: The gas-liquid separator also includes a drain pipe, the bottom of the gas-liquid separation tank is provided with a drain port, the drain port is arranged on one side of the extension tube, the drain pipe is arranged at the lower part of the gas-liquid separation tank and is connected with the drain port; the side-mounted liquid level gauge also includes a suction shell and a third connecting pipe, the suction shell is arranged in the gas-liquid separation tank and is surrounded by the extension tube, a liquid collection cavity is formed between the suction shell and the extension tube, and a plurality of liquid inlet holes connected with the liquid collection cavity are arranged on the circumference of the suction shell; one end of the third connecting pipe is connected with the liquid collection cavity, and the other end extends into the drain pipe through the drain port to discharge impurities in the liquid collection cavity into the drain pipe.

7. The gas-liquid separator according to claim 6, characterized in that: The third connecting pipe includes a first connecting section and a second connecting section arranged at an angle, the second connecting section is arranged at the lower part of the first connecting section, the first connecting section is connected to the liquid collection cavity, and the second connecting section extends into the sewage pipe through the sewage outlet.

8. The gas-liquid separator according to claim 6, characterized in that: The gas-liquid separator also includes a fixed seat, which is fixedly arranged at the bottom of the gas-liquid separation tank. The fixed seat is provided with a second through hole, and the second through hole is arranged corresponding to the sewage outlet. The third connecting pipe is fixedly arranged in the fixed seat, and the other end of the third connecting pipe extends into the sewage pipe through the second through hole and the sewage outlet in sequence.

9. The gas-liquid separator according to claim 5, characterized in that: The gas-liquid separator also includes a drain pipe, the bottom of the gas-liquid separation tank has a drain port, the drain port is arranged on one side of the extension tube, and the drain pipe is arranged at the lower part of the gas-liquid separation tank and is connected with the drain port; the side-mounted liquid level gauge also includes a suction shell and a third connecting pipe, the suction shell is arranged in the gas-liquid separation tank and is surrounded by the extension tube, a liquid collection cavity is formed between the suction shell and the extension tube, and a plurality of liquid inlet holes connected with the liquid collection cavity are arranged on the circumference of the suction shell; one end of the third connecting pipe is connected with the liquid collection cavity, and the other end extends into the drain pipe through the drain port to discharge impurities in the liquid collection cavity into the drain pipe.

10. The gas-liquid separator according to claim 9, characterized in that: The gas-liquid separator further comprises an anti-vortex device, the anti-vortex device is arranged corresponding to the liquid discharge port, and the third connecting pipe is fixedly arranged in the anti-vortex device.

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