49 results about "Liquid-ring pump" patented technology

The invention provides a turbine pump and liquid ring pump series combination system and a control method thereof. Comprising a turbine pump, a condenser, a liquid ring pump, a heat exchanger, a steam-water separator, a control cabinet, a first variable frequency motor, a second variable frequency motor, a first pressure transmitter, a second pressure transmitter, a third pressure transmitter, a first temperature transmitter, a second temperature transmitter, a liquid level transmitter, a first electric control switch valve, a second electric control switch valve and a first electric control regulating valve. And a second electric control regulating valve and other components and related pipelines. By the adoption of the system formed by connecting the turbine pump (the front-stage pump) and the liquid ring pump (the rear-stage pump) in series and the control method of the system and monitoring the feature points of the front-stage pump and the rear-stage pump, the working conditions of the front-stage pump and the rear-stage pump can be adjusted in time, the phenomena of surge, stall, cavitation and the like are avoided, and therefore the energy consumption of the system is reduced, and the stability of the system is remarkably improved.

The utility model provides a vacuum breaking water stop valve. The vacuum breaking water stop valve comprises a valve body and a partition plate. The partition plate divides the internal space of the valve body into an air outlet channel and an air inlet channel, an outlet of the air outlet channel is located on one side of the bottom of the valve body, and an inlet of the air inlet channel is located on the other side of the top of the valve body. A connecting channel opening for communicating the air inlet channel with the air outlet channel is formed in the partition plate; a water return hole is formed in one side, close to the bottom of the valve body, of the partition plate; a floater is arranged below the connecting channel opening, and a connecting rod penetrating through the connecting channel opening is arranged above the floater; a vacuum breaking chamber is arranged at the top of the valve body, a vent hole is formed in a shell of the vacuum breaking chamber, and a connecting rod inlet and a sealing module for sealing the connecting rod inlet are arranged at the bottom of the vacuum breaking chamber; the upper end of the connecting rod penetrates through the connecting rod inlet and is fixedly connected with the sealing module. In the using process, vacuum breaking and water stopping can be automatically and rapidly achieved, water or other liquid is effectively prevented from damaging the liquid ring pump, and therefore the reliability of vacuum water diversion equipment is improved, and the service life of the vacuum water diversion equipment is prolonged.

To prevent a backflow of fluid while suppressing cavitation.SOLUTION: A liquid-sealing pump includes: a casing having a columnar cavity formed therein; an impeller having a plurality of blades attached inside the casing in an eccentric manner; a port part for covering an end of the casing; and a check valve assembly provided communicating with the cavity and having a check valve for preventing an outflow of liquid from the cavity. Air is sucked and compressed by repeating expansion and compression of the air sealed in a space surrounded by the blades and an air-liquid interface of a liquid return flow generated by rotating the liquid sealed inside the casing by the impeller. An air suction port, an air discharge port, and a cavitation suppressing hole are formed in the port part. The cavitation suppressing hole communicates the cavity with the check valve assembly.SELECTED DRAWING: Figure 1

This application provides a kiln tail high-temperature gas sampling and analysis instrument, comprising: a sampling probe assembly for inserting into the kiln tail flue to extract a high-temperature gas-sludge mixture; the sampling probe assembly includes a coaxially arranged outer sleeve and sampling tube, both of which are equipped with independent closed-loop cooling circuits; a pretreatment assembly connected to the outlet of the sampling probe assembly, including a pre-separation tank for preliminary gas-liquid-solid separation of the extracted gas-sludge mixture; and a purification and drying assembly connected to the pretreatment assembly, including a liquid ring pump, at least one ball filter, a gas-water separator, and a refrigerated air dryer for deep purification, moisture separation, and drying of the gas; the liquid ring pump is used to deliver the gas-sludge mixture at a high flow rate. This application solves the problems of traditional samplers being unable to withstand high-temperature shock, prone to clogging, requiring frequent maintenance, susceptible to sample contamination, and having slow response speed.

Systems and methods are provided for regenerating a bed containing absorbed and / or adsorbed CO2 using a low value steam stream. The steam stream can have a pressure of 10 kPa-a to 50 kPa-a and a temperature of 46° C. to 81° C. The steam stream can be used to displace CO2 from the bed, resulting in formation of a low pressure stream including water vapor and CO2. The stream containing water vapor and CO2 is then passed through a liquid ring pump that includes an associated ring cooler. The ring pump provides the suction necessary to draw the low value steam stream through the bed to displace the CO2. Due to the nature of operation of the liquid ring pump, the majority of water in the steam containing H2O and CO2 can be removed within the liquid ring pump, resulting in production of a stream comprising 90 vol % or more of CO2 at a pressure of 90 kPa-a or more. An example of a bed that can be regenerated using a low value steam stream is a bed that corresponds to a liquid amine that is coated on / covering / impregnated into a porous solid, so that the liquid amine remains substantially in place during a cycle of sorption and desorption of CO2.

This invention relates to the field of polyglycolic acid (PGA) synthesis technology, and more particularly to a PGA polymerization devolatilization system, comprising a steam jet vacuum system, a mixing condenser, a liquid ring pump, and a utility system. The steam jet vacuum system is connected at its inlet to the PGA polymerization reaction system and at its outlet to the mixing condenser inlet, used to separate unreacted monomers and low-molecular-weight byproducts and other volatiles. The mixing condenser gas outlet is connected to the liquid ring pump inlet, where condensable components are liquefied through condensation, and non-condensable gases are discharged. The liquid ring pump extracts non-condensable gases to maintain the system vacuum. The utility system integrates power steam pipelines, condensing medium pipelines, and insulation medium pipelines, providing power, condensation, and insulation support for each component. Through multi-stage jet compression, spray condensation, and insulation synergistic operation, the system improves mass transfer efficiency and process control precision, effectively removes volatiles, and enhances the purity, biodegradability, and mechanical properties of the PGA product.

The invention discloses a smoke abatement device capable of treating smoke of a roots pump testboard. The smoke abatement device is used in the roots pump testboard. The smoke abatement mechanism is connected with the roots pump test bench through a smoke collecting pipe. The smoke abatement mechanism comprises a rack, a smoke abatement device and a smoke abatement device, a liquid ring pump; a gas-water separator; the first connecting pipe is connected with the liquid ring pump and the gas-water separator; a second connecting pipe is connected with the gas-water separator and a cooler; a third connecting pipe is connected with the cooler and the liquid ring pump, one end of a fourth connecting pipe is connected with the liquid ring pump, and the other end of the fourth connecting pipe is connected with an external water supply device; a first control valve is positioned on the third connecting pipe; the second control valve is located on the fourth connecting pipe, and the controller is connected with the first control valve and the second control valve. The liquid ring pump, the first connecting pipe, the gas-water separator, the second connecting pipe, the cooler, the third connecting pipe and the liquid ring pump are connected into a whole in a closed loop mode.

The utility model provides an integrated end cover and a liquid ring pump. The integrated end cover comprises an end cover body and an accommodating cavity which is concavely arranged from the inner side of the end cover body. The end cover body is provided with an exhaust channel, an air suction channel, a first airflow channel and a second airflow channel which communicate with the containing cavity. The first airflow channel is communicated with the second airflow channel, and an inlet of the first airflow channel and an outlet of the second airflow channel are both located between 121 and an outlet of the air suction channel. The first airflow channel is used for absorbing gas flowing through the inlet of the exhaust channel, and the second airflow channel is used for exhausting gas entering from the first airflow channel. Through the arrangement, gas which is not completely emptied at the exhaust channel can be further exhausted effectively, so that the gas is prevented from flowing from the high-pressure exhaust channel to the low-pressure suction channel, and the suction capacity of the next suction cycle is guaranteed.

The utility model discloses a smoke abatement device capable of treating smoke of a roots pump testboard. The smoke abatement device is used in the roots pump testboard. The smoke abatement mechanism is connected with the roots pump test bench through a smoke collecting pipe. The smoke abatement mechanism comprises a rack, a smoke abatement device and a smoke abatement device, a liquid ring pump; a gas-water separator; the first connecting pipe is connected with the liquid ring pump and the gas-water separator; a second connecting pipe is connected with the gas-water separator and a cooler; a third connecting pipe is connected with the cooler and the liquid ring pump, one end of a fourth connecting pipe is connected with the liquid ring pump, and the other end of the fourth connecting pipe is connected with an external water supply device; a first control valve is positioned on the third connecting pipe; the second control valve is located on the fourth connecting pipe, and the controller is connected with the first control valve and the second control valve. The liquid ring pump, the first connecting pipe, the gas-water separator, the second connecting pipe, the cooler, the third connecting pipe and the liquid ring pump are connected into a whole in a closed loop mode.

A system comprising: a liquid ring pump; a separator coupled to an exhaust outlet of the liquid ring pump; a valve module, the valve module being coupled to the separator via a first drainage line and coupled to the liquid ring pump via a second drainage line, the valve module comprising a first valve arranged along the first drainage line and a second valve arranged along the second drainage line; and a controller configured to control the valves.

The utility model relates to the field of vacuum unit equipment, and discloses a filter type heat exchanger for a liquid ring pump, which comprises a heat exchanger main body, a mounting cylinder, a filter cylinder, a filter cylinder sealing cover, a pipeline I, a movable joint, a liquid inlet pipe and a pipeline II. In the operation process of the liquid ring pump, the effect of filtering impurities doped in circulating liquid can be achieved, the impurities are prevented from entering a pump cavity of the liquid ring pump, negative influences on the liquid ring pump are avoided, and therefore the service life of the liquid ring pump is prolonged.

The utility model relates to the technical field of flexible foam polyether polyol processing and production, in particular to a flexible foam polyether polyol reaction kettle vacuum unit which comprises a reaction kettle main body, an initiator input pipe is arranged at the top end of the reaction kettle main body, an epoxypropane input pipe is arranged on one side of the initiator input pipe, and an epoxypropane output pipe is arranged on the other side of the epoxypropane input pipe. A vacuum pipeline is arranged on one side of the epoxypropane input pipe and connected with a vacuum buffer tank, the vacuum buffer tank is connected with an input port of a roots pump, an output port of the roots pump is connected with a liquid ring pump, an output port of the liquid ring pump is connected with a spiral heat exchange assembly, an output port of the spiral heat exchange assembly is connected with a high-temperature storage tank, and the high-temperature storage tank is connected with a vacuum pump. An output port of the high-temperature storage tank is connected with a circulating pump, an output port of the circulating pump is provided with a connecting pipe, and by means of the structure of the spiral pipe, the liquid inlet pipe, the liquid outlet pipe, the high-temperature storage tank, the circulating pump and the connecting pipe, the problems that a traditional vacuum unit is low in waste gas waste heat recovery rate, lacks a preheating mechanism for raw materials and is serious in energy waste are solved.

The invention relates to a liquid ring pump (1) configured to circulate a fluid through a fluid circuit and comprising: a cylindrical body (2) having a liquid ring at the periphery of the inner volume (20); and at least one impeller (3) rotatably mounted eccentrically in the cylindrical body (2), the impeller (3) comprising a plurality of cavities (32), each being defined between two adjacent blades (31). The liquid ring pump (1) comprises an upstream sealing wall (4), fixedly connected to an upstream face (33) of the impeller (3), and a downstream sealing wall (5), fixedly connected to a downstream face (34) of the impeller (3), these walls being configured to close each cavity (32) of the impeller (3) respectively upstream and downstream. At least the upstream sealing wall (4) has a diameter (De) strictly smaller than a diameter (Dr) of the impeller (3), the diameter (De) of the upstream sealing wall (4) being determined so as to form, in the configuration of use, an intake duct (6) for the fluid (F) between an outer peripheral boundary (41) of the upstream sealing wall (4) and an inner peripheral boundary (Ll) of the liquid ring (W).

A method for removing active particles from a vacuum environment (14) in which a process gas is conveyed from the vacuum environment (14) by means of a vacuum pump (21, 22). A process gas is conducted between a vacuum environment (14) and a vacuum pump (21, 22) through a first filter (31) and a second filter (32) in order to filter active particles from the process gas. Particles are discharged from the first filter (31) and the second filter (32) by means of a liquid ring pump (35). In a first stage of the method, the first filter (31) is active and the second filter (32) is passive, and in a second stage of the method, the first filter (31) is passive and the second filter (32) is active. In a first stage, a process gas is conducted through a first filter (31) and a liquid ring pump (35) discharges particles from a second filter (32). In a second stage, the process gas is conducted through the second filter (32), and the liquid ring pump (35) discharges particles from the first filter (31). The invention further relates to a device for removing active particles from a vacuum environment and to a process system for producing monocrystalline silicon ingots.

The utility model belongs to the technical field of polyester production equipment, and particularly relates to an energy-saving and anti-blocking vacuum system for polyester production, which comprises a three-stage steam jet pump, a liquid ring pump, a first ethylene glycol liquid seal tank, a second ethylene glycol liquid seal tank, a heat exchanger and an ethylene glycol recycling tank, the third-stage steam jet pump comprises a first-stage spray tower, a second-stage spray tower and a third-stage spray tower which are communicated in sequence, the first-stage spray tower and the second-stage spray tower are both communicated with the first ethylene glycol liquid seal tank, the third-stage spray tower is communicated with the second ethylene glycol liquid seal tank, ethylene glycol in the second ethylene glycol liquid seal tank enters the ethylene glycol recycling tank, and the second-stage spray tower is communicated with the third-stage spray tower. Part of ethylene glycol in the first ethylene glycol liquid seal tank enters the ethylene glycol recycling tank, part of ethylene glycol enters the heat exchanger, and ethylene glycol cooled by the heat exchanger returns to the third-stage steam-jet pump; and the pipeline between the heat exchanger and the third-stage steam-jet pump is communicated with a flushing pipeline. The vacuum system for polyester production can solve the problems that an existing vacuum system for polyester production wastes heat and is easy to block.

The utility model belongs to the technical field of liquid ring pumps, in particular to a double-support single-side dynamic seal liquid ring pump, which is characterized in that two ends of a pump body are fixedly connected with a front distribution plate and a rear distribution plate respectively, the front end of the front distribution plate is fixedly connected with a front side cover, and the rear end of the rear distribution plate is fixedly connected with a rear side cover; a rolling bearing or a first sliding bearing and a dynamic seal are arranged between the bearing seat and the pump shaft, the front side cover and the rear side cover are respectively provided with an air inlet and an air outlet, a second sliding bearing is arranged between the rear side cover and the pump shaft and arranged in a sliding bearing cavity of the rear side cover, and a sliding bearing gland is arranged at the tail end of the pump shaft. A sealing gland is arranged at the rear end of the rear side cover and fixedly connected with the rear side cover, and a static seal is arranged between the sealing gland and the rear side cover. According to the utility model, a non-driving end is changed into static sealing, so that the sealing effect is better and the cost is low; and the sliding bearing can be fully lubricated and flushed, the heating of the bearing is reduced, and the service life of the sliding bearing is prolonged.

The invention relates to a liquid ring pump (1) configured to circulate a fluid through a fluid circuit and comprising: a cylindrical body (2) defining an internal volume (20) filled with an operating liquid which, when in a use configuration, forms a liquid ring at the periphery of the internal volume (20); and at least one drive member (9) mounted eccentrically and in such a way as to be able to rotate in the cylindrical body (2), the drive member (9) comprising an impeller (3) comprising a plurality of cavities (32), each being defined between two adjacent blades (31). The drive member (9) comprises at least one plurality of upstream openings (91) for the fluid (F) to flow through the impeller (3), at least one plurality of downstream openings, for distributing the fluid (F), and at least one plurality of circulation channels each formed between an upstream opening (91) and a downstream opening, the angular positions of which are offset.

This invention provides a magnetically levitated shaftless liquid ring pump, comprising an end cover, a distribution plate, a pump body, and an impeller. The impeller is disposed within the pump body, the distribution plate is located at the front end of the impeller and is fixedly connected to the pump body, the end cover is located at the front end of the distribution plate and is fixedly connected to the pump body, and the end cover has a working fluid inlet. It also includes a magnetically levitated drive and a permanent magnet rotor module. The permanent magnet rotor module is disposed at the rear end of the impeller, and its front end is fixedly connected to the rear end of the impeller. The magnetically levitated drive is disposed at the rear end of the permanent magnet rotor module, and its front end is fitted onto the outer circumference of the permanent magnet rotor module. An isolation sealing cover is provided between the pump body and the magnetically levitated drive. This invention significantly reduces the risk of accidents during the operation of the liquid ring pump, greatly improves the stability and reliability of the liquid ring pump, and increases the efficiency of equipment operation. It eliminates the need for regular inspection and replacement of grease or lubricating oil; the equipment occupies less space, installation and maintenance are simpler, and the start-up cost is lower.

The invention discloses a multi-mode vacuum-pumping system for a plasma graphitization process, which relates to the technical field of vacuum acquisition and mainly comprises a high vacuum pump unit, a liquid ring pump unit, a vacuum main pipeline, a switching valve group and a system controller, the high vacuum pump unit and the liquid ring pump unit are connected in parallel to the vacuum main pipeline through the switching valve group, and the vacuum main pipeline is used for connecting the process reaction cavity. And the controller can control the switching valve group to switch the communication path according to the process requirement or the real-time pressure, and controls the start and stop of each pump. The high vacuum pump unit comprises at least two stages of vacuum pumps connected in series, the liquid ring pump unit is used for establishing and maintaining micro-negative pressure, and the high vacuum pump unit, the liquid ring pump unit and the switching valve group can be integrated on a common base. The method comprises the steps of mode switching, high-vacuum air exhaust and micro-negative pressure control, and a redundancy emergency mechanism is further arranged. The system is flexible in switching and accurate in control, can adapt to the requirements of each stage of the plasma graphitization process, and improves the stability and safety of the process.

A vacuum pump system 10 comprises a plurality of serially connected pump stages 12 arranged in parallel. An inlet 14 of each pump stage is connectable to a recipient. An outlet 26 of each pump stage is connected via a manifold 28 to an inlet 32 of an exhaust pump 30. The exhaust pump may be a dry pump, particularly a multistage roots pump, or a condenser pump, particularly a liquid ring pump. The pump stages and the exhaust pump may be arranged inside a housing. A pump control system and the exhaust pump may be inside a facility space of the housing. A controller 40 may control the fluid flow through and / or past the exhaust pump. A bypass 36 may be connected to the manifold to selectively bypass the exhaust pump and controlled by the controller. The controller may control a speed of the exhaust pump. Each pump stage may be a multistage pump stage comprising a plurality of pumps arranged in series, and may comprise a primary booster pump 20, particularly a mechanical booster pump, a secondary booster pump 22 and a backing pump 24, particularly a multistage dry pump. The vacuum pump system may be connected to a chamber of an extreme ultraviolet lithography vacuum system or a direct-air capture system. [Include figure 1]

The present invention belongs to the technical field of liquid ring pumps, and specifically relates to a key sealing device and sealing method for a rotary shell type liquid ring pump, comprising a bracket, a base mounted on the bracket, a pump casing assembled on one side of the base, a sealing shell provided on the side of the pump casing close to the base, and the sealing shell being located on the outside of the base, a bearing provided between the base and the sealing shell, and the base and the pump casing being sealed using any one of the following four sealing structures: a first sealing structure is sealed by a dynamic sealing structure, a second sealing structure is sealed by a magnetic fluid sealing structure, a third sealing structure is sealed by a sealing ring structure, and a fourth sealing structure is sealed by a combination of the above three sealing structures. The present invention can help achieve beneficial effects such as low starting torque, low friction resistance, and high sealing performance, thereby enabling the rotary shell type liquid ring pump to operate with low resistance and high efficiency.

The present application belongs to the technical field of liquid ring pump, especially to a liquid ring pump eccentricity adjusting method, comprising the following steps: step 1, setting the fixing mechanism at both ends of the pump body of the liquid ring pump into a flange plate form, eccentrically setting the inner cavity of the pump body of the liquid ring pump and the fixing mechanism at both ends thereof, the eccentricity value being a, then the maximum total eccentricity E1 of the liquid ring pump = e + a; step 2, calculating the optimal rotation angle through a formula, calculating the corresponding number of bolt holes C = α × Z / 360; step 3, rotating the liquid ring pump by the corresponding number of bolt holes C, thereby obtaining the optimal eccentricity value E2 = e + b, wherein b = a * cos (C * β). The present application adjusts the optimal installation angle, thereby realizing the adjustment of the optimal eccentricity value, and thereby realizing that the liquid ring pump can achieve the optimal working efficiency under different working speeds; the limit working point suction capacity of the liquid ring pump is greatly improved, and the working efficiency is also greatly improved.

The invention discloses an integrated universal tool jig for disassembling and assembling an impeller of a liquid ring vacuum pump and a using method of the integrated universal tool jig. The tool jig comprises a central shaft screw rod, an inclined disc, a disc-shaped protection plate and at least two countersunk head locking bolts, wherein the central shaft screw rod, the inclined disc, the disc-shaped protection plate and the countersunk head locking bolts can be disassembled and assembled. The two faces of the inclined disc are a large round face and a small round face respectively, an inclined slope face is arranged between the large round face and the small round face, a through screw hole penetrating through the large round face and the small round face is formed in the inclined disc, and the center shaft screw can be inserted into the through screw hole. When the impeller is disassembled, the small circular surface of the inclined disc faces the impeller, and when the impeller is installed, the large circular surface of the inclined disc faces the impeller. According to the liquid ring vacuum pump impeller disassembling and assembling integrated universal tool jig, the functions of disassembling and assembling the impeller are integrated, disassembling and assembling of liquid ring pumps of different sizes can be met, and the tool jig can also be used for maintaining many other devices.

The utility model relates to liquid ring pump processing technical field especially relates to a kind of liquid ring pump spare and part processing platform, this liquid ring pump spare and part processing platform includes gantry, two openings are set in the gantry, rotatable placing plate is provided in each opening, placing plate side is rotatably connected by first rotating shaft and first bearing seat, placing plate other side is rotatably connected by second rotating shaft and second bearing seat, first rotating shaft is connected by driving gear and push assembly. Sliding plate is slid along by telescopic member driving tooth plate, by the meshing of tooth plate and driving gear, drive first rotating shaft to rotate, and then drive placing plate to rotate, the inclination angle of placing plate can be accurately adjusted, ensure that angle is accurate when inclined hole is processed, avoid the damage of spare part due to angle deviation.

The invention relates to an X-shaped twisted impeller for a liquid ring pump, which comprises a hub, a plurality of X-shaped twisted blades are arranged on the hub, the blade profile of each X-shaped twisted blade is equally divided into six axial sections (a, b, c, d, e and f) with different radiuses from the hub to a rim, and the axial section a at the hub of each X-shaped twisted blade and the axial section f at the rim of each X-shaped twisted blade form an X-shaped structure. The blade inlet angle of each axial section at different radiuses is the same as the inlet relative liquid flow angle at the position of the axial section, and the blade inlet angle of each axial section is equal to the blade outlet angle. According to the technical scheme of the invention, the designed X-shaped twisted blade impeller can effectively reduce the impact loss of an air inlet and an air outlet and reduce flow separation by selecting proper blade molded lines and accurately controlling the twisting angles of the inlet and the outlet at different section positions of the blades, so that the hydraulic loss in the working process is reduced, and the service life of the impeller is prolonged. And the working stability and efficiency of the liquid ring pump are improved.

The invention relates to a method for removing reactive particles from a vacuum environment (14), in which a process gas is conveyed from the vacuum environment (14) by means of a vacuum pump (21, 22). The process gas is passed between the vacuum environment (14) and the vacuum pump (21, 22) through a first filter (31) and a second filter (32) to filter reactive particles from the process gas. A liquid ring pump (35) is used to discharge particles from the first filter (31) and the second filter (32). In a first phase of the method, the first filter (31) is active and the second filter (32) is passive; in a second phase of the method, the first filter (31) is passive and the second filter (32) is active. In the first phase, the process gas is passed through the first filter (31) and the liquid ring pump (35) discharges particles from the second filter (32). In the second phase, the process gas is passed through the second filter (32) and the liquid ring pump (35) discharges particles from the first filter (31). The invention also relates to a device for removing reactive particles from a vacuum environment and to a process system for producing monocrystalline silicon ingots.

The utility model belongs to the technical field of gas-water separation, and particularly relates to a simple self-control liquid level gas-water separator, which comprises a tank body, a gas outlet arranged on the upper end face of the tank body, a water replenishing port arranged in the middle of the front side and a vacuum pump water supply port arranged on the lower portion of the front side. An overflow port is formed in the middle of the back surface of the tank body; the air outlet, the air inlet and the overflow port are respectively provided with a standard upper connector and a standard lower connector which are sealed in a butt-clamping mode, and the water supplementing port is provided with a floater type automatic water supplementing switch which is arranged in the tank body. The automatic water replenishing tank is simple in structure, light in weight, convenient to install and low in manufacturing and production cost, and the float type automatic water replenishing switch and the overflow port are installed in the tank, so that the liquid level in the tank is automatically controlled; the tank body is made of a plastic material and has certain transparency, so that the internal liquid level condition is easy to check, and the tank body is particularly suitable for liquid ring pump units with simple working conditions, such as vacuum priming devices.

A liquid ring pump (1) configured to circulate a fluid in a fluid circuit and comprising: a cylindrical body (2) defining an internal volume (20) filled with a working fluid forming, in an operating configuration, a liquid ring around the periphery of the internal volume (20); and at least one drive element (9) mounted rotatably offset within the cylindrical body (2), the drive element (9) comprising an impeller (3) having a plurality of cavities (32), each being defined between two adjacent impellers (31). The drive element (9) includes at least a plurality of upstream openings (91) for the circulation of the fluid (F) in the impeller (3), at least a plurality of downstream openings for the distribution of the fluid (F), and at least a plurality of circulation channels formed each between an upstream opening (91) and a downstream opening whose angular positions are offset. (Shortcut figure: Figure 3)

The invention belongs to the technical field of light hydrocarbon recovery, and particularly relates to a method for optimizing gas components by highly recovering C3 + light hydrocarbons, which comprises the following steps of: S1, intensively collecting high C3 + fuel gas by using a coking device, atmospheric and vacuum distillation, gasoline hydrogenation, diesel oil refining and a diesel oil modification device; s2, the fuel is fed into an inlet liquid separation tank through a liquid ring pump, liquid phase components in the fuel are removed, gas phase components are gathered and conveyed into a coking absorption tower through an aerostatic press, the gas phase components sequentially pass through a heat exchanger, an outlet liquid separation tank and an absorption tower, the tower top gas phase components enter a coking rerecovery tower, and C3 and above C3 components in gas are absorbed; s3, tower top dry gas is discharged into a gas system or enters a desulfurization device. According to the invention, the loss of efficient components is reduced, and the economic benefit is improved; the phenomenon that the fuel gas carries liquid is avoided, so that the fuel gas does not need liquid cutting operation any more, and the safety risk is reduced; the dry gas feeding proportion of the gas recovery device is increased, and the hydrogen yield is increased.

A liquid ring pump (1) configured to circulate a fluid in a fluid circuit and comprising: a cylindrical body (2) defining an internal volume (20) filled with a working fluid forming, in an operating configuration, a liquid ring around the periphery of the internal volume (20); and at least one drive element (9) mounted rotatably offset within the cylindrical body (2), the drive element (9) comprising an impeller (3) having a plurality of cavities (32), each being defined between two adjacent impellers (31). The drive element (9) includes at least a plurality of upstream openings (91) for the circulation of the fluid (F) in the impeller (3), at least a plurality of downstream openings for the distribution of the fluid (F), and at least a plurality of circulation channels formed each between an upstream opening (91) and a downstream opening whose angular positions are offset. (Shortcut figure: Figure 3)