CN217813929U - Oil injection screw compressor unit - Google Patents
Oil injection screw compressor unit Download PDFInfo
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- CN217813929U CN217813929U CN202222018049.2U CN202222018049U CN217813929U CN 217813929 U CN217813929 U CN 217813929U CN 202222018049 U CN202222018049 U CN 202222018049U CN 217813929 U CN217813929 U CN 217813929U
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Abstract
The utility model discloses an oil spout screw compressor unit, a serial communication port, include: the oil cooler is connected with the oil pump, the oil filter, the driving motor, the air suction filter, the control box and the control loop in sequence; the height of the input end of the oil separator is lower than that of the output end of the compressor, the control loop is arranged on the pipeline and consists of a plurality of pipeline valves and a plurality of sensors, and the control loop can control the opening and closing of each pipeline valve according to data fed back by each sensor so as to adjust the oil supply temperature, the oil supply pressure difference and the load of the compressor; the control box is connected with the control loop, and the control box can preset parameters of all sensors of the control loop. The problems that the traditional screw compressor unit is inconvenient to control manually and affects efficiency are solved; the problem that the existing compressor unit, the arrangement scheme from the compressor to the oil separator or the piping scheme is unreasonable, so that a large amount of lubricating oil is stored in the exhaust pipe after the compressor unit is stopped, and the compressor unit cannot be started again smoothly is solved.
Description
Technical Field
The utility model relates to a screw compressor unit field especially relates to an oil spout screw compressor unit.
Background
The screw compressor has many advantages such as reliable operation, long service life, convenient operation, etc., and is widely used in the fields of petrochemical industry and natural gas treatment, such as compression of gases such as propylene, propane and natural gas, and refrigeration systems such as propane, propylene and freon.
The adjustment of the oil supply temperature control, the oil supply pressure difference and the compressor load of the traditional screw compressor unit all needs manual control, and the manual control has a great deal of inconvenience and influences the working efficiency.
In the existing compressor unit products, due to the fact that the arrangement scheme from the compressor to the oil separator is unreasonable or the piping scheme is unreasonable, oil of the compressor is difficult to discharge, a large amount of lubricating oil is stored in the exhaust pipe after the compressor is stopped, and the compressor cannot be started smoothly again.
Disclosure of Invention
The utility model provides an oil spout screw compressor unit to overcome traditional screw compressor unit fuel feeding control by temperature change, fuel feeding pressure differential, the adjustment of compressor load, all need manual control, manual control has a great deal of inconvenience, influence work efficiency, and some compressor unit products that have now, because the compressor is unreasonable to the scheme of arranging of oil separator or the piping scheme is unreasonable, lead to the compressor to arrange the oil difficulty, shut down the interior a large amount of lubricating oil that has of back blast pipe, the problem of the unable smooth start once more.
In order to realize the purpose, the technical scheme of the utility model is that:
an oil-injected screw compressor unit, comprising: the oil cooling device comprises a compressor, an oil separator, an oil cooler, an oil pump, an oil filter, a driving motor, an air suction filter, a control box and a control loop;
the output end of the suction filter is connected with the input end of the compressor, the input end of the suction filter is communicated with an air source, and the driving motor is used for driving the compressor;
the input end of the oil separator is lower than the output end of the compressor, the input end of the oil separator is connected with the output end of the compressor through a pipeline, the gas path output end of the oil separator is communicated with a next-stage gas recovery processing device, and the lubricating oil output end of the oil separator is connected with the input end of the oil cooler through a pipeline;
the input end of the oil pump is connected with the output end of the oil cooler through a pipeline, the output end of the oil pump is connected with the input end of the oil filter through a pipeline, and the output end of the oil filter is connected with the lubricating oil input end of the compressor through a pipeline;
the control loop is arranged on the pipeline and consists of a plurality of pipeline valves and a plurality of sensors, and can control the opening and closing of each pipeline valve according to data fed back by each sensor so as to regulate the oil supply temperature, the oil supply pressure difference and the load of the compressor;
the control box is connected with the control loop, and parameters of each sensor of the control loop can be preset by the control box.
Further, the compressor and the driving motor are arranged on a fine machining rack.
Further, the gradient of a pipeline between the input end of the oil separator and the output end of the compressor is 0.5% -1.0%.
Furthermore, an exhaust check valve is arranged at the output end of the gas path of the oil separator, and an air suction check valve is arranged at the input end of the air suction filter.
Furthermore, the oil separator is provided with an oil return pipeline, the oil return pipeline is connected with the input end of the compressor, and the oil return pipeline is provided with an oil return valve with adjustable opening and an oil return sight glass.
Further, the control loop comprises an oil supply temperature control loop, an oil supply pressure difference control loop and a compressor load control loop;
the oil supply temperature control loop is arranged on a pipeline between the input end of the oil pump and the output end of the oil cooler, and the oil supply pressure difference control loop comprises an oil supply temperature control valve and an oil supply temperature sensor;
the oil supply pressure difference control loop is arranged on a pipeline between the output end of the oil filter and the lubricating oil input end of the compressor, the oil supply pressure difference control loop is connected with the oil separator, and the oil supply pressure difference control loop comprises an oil supply pressure difference control valve and an oil supply pressure sensor;
the compressor load control loop is arranged on a pipeline between the output end of the oil filter and a slide valve of the compressor, the compressor load control loop is connected with the input end of the compressor, and the compressor load control loop comprises a capacity control electromagnetic valve and a suction pressure sensor.
Further, the oil pump is configured as one-use-one-standby.
Further, the oil filter is configured as a one-use-one-standby configuration.
Furthermore, the compressor, the driving motor, the control box, the pipeline valves and the sensors are all explosion-proof.
The utility model has the advantages that:
the control loop is arranged on the pipeline and consists of a pipeline valve and a sensor, the control loop controls the opening and closing of the pipeline valve according to data fed back by the sensor so as to control the oil supply temperature, the oil supply pressure difference and the compressor load, and the parameters of the control loop sensor are preset by the control box, so that the oil supply temperature, the oil supply pressure difference and the compressor load can be automatically adjusted according to the preset parameters, and the problems that the oil supply temperature control, the oil supply pressure difference and the compressor load of the traditional screw compressor unit are all required to be manually controlled, manual control is inconvenient and the working efficiency is affected are solved; the input height of oil separator is less than the output height of compressor, and oil separator's input passes through the pipeline with the output of compressor and links to each other, has solved some current compressor unit products, because the arrangement scheme of compressor to oil separator is unreasonable or the piping scheme is unreasonable, leads to the compressor to drain oil difficultly, has a large amount of lubricating oil in the exhaust pipe after shutting down, the problem of unable smooth start once more.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic flow chart of an oil injection screw compressor unit disclosed by the utility model;
fig. 2 is a schematic structural view of a compressor and a driving motor of an oil-injected screw compressor unit, which are arranged on an oil separator according to the present invention;
fig. 3 is a schematic structural view of a compressor and a driving motor of an oil-injected screw compressor unit, which are arranged on a common frame;
fig. 4 is a front view of a first finishing frame of an oil injection screw compressor unit according to the present disclosure;
fig. 5 is a top view of a first finishing frame of an oil-injected screw compressor unit according to the present invention;
fig. 6 is a front view of a second finishing frame of an oil-injected screw compressor unit according to the present disclosure;
fig. 7 is a top view of a second finishing frame of an oil-injected screw compressor unit according to the present invention;
fig. 8 is a schematic diagram of an oil supply temperature control loop of an oil injection screw compressor unit according to the present invention;
fig. 9 is a schematic diagram of an oil supply pressure difference control loop of an oil injection screw compressor unit according to the present invention;
fig. 10 is a schematic diagram of a compressor load control loop of an oil-injected screw compressor unit according to the present disclosure;
FIG. 11 is a schematic diagram of an oil pump and oil filter of an oil injected screw compressor package according to the present disclosure;
in the figure: 1. the compressor comprises a compressor body 1-1, a compressor mechanism seat welding reinforcing plate 1-2, a first compressor mechanism seat supporting plate 1-3, a first ribbed plate 1-4, a second ribbed plate 1-5, a third ribbed plate 1-6, a first compressor mechanism seat cover plate 1-7, a second compressor mechanism seat supporting plate 1-8, a second compressor mechanism seat cover plate 2, an oil separator 3, an oil cooler 4-1, a first oil pump 4-2, a second oil pump 5, an oil filter 6-1, an oil supply temperature control valve 6-2, an oil supply pressure difference control valve 7 and a driving motor, 7-1, a welding reinforcing plate of a driving motor mechanism seat, 7-2, a welding reinforcing plate of the driving motor mechanism seat, 7-3, a first ribbed plate of the driving motor mechanism seat, 7-4, a second ribbed plate of the driving motor mechanism seat, 7-5, a cover plate of the first driving motor mechanism seat, 7-6, a support plate of the second driving motor mechanism seat, 7-7, a cover plate of the second driving motor mechanism seat, 8, an air suction filter, 9-1, an air suction check valve, 9-2, an exhaust check valve, 10, an oil return valve, 11, an oil return sight glass, 12, a capacity control electromagnetic valve, 13, a control box, A and a public rack.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
The embodiment provides an oil injection screw compressor unit, including: the oil-injection type compressor comprises a compressor 1, an oil separator 2, an oil cooler 3, an oil pump, an oil filter 5, a driving motor 7, an air suction filter 8, a control box 13 and a control loop, wherein FIG. 2 is a structural schematic diagram of an oil-injection screw compressor unit with the compressor 1 and the driving motor 7 directly arranged on the oil separator 2, FIG. 3 is a structural schematic diagram of an oil-injection screw compressor unit with the compressor 1 and the driving motor 7 arranged on a common frame, and a flow schematic diagram of the oil-injection screw compressor unit is shown in FIG. 1;
the output end of the suction filter 8 is connected with the input end of the compressor 1, the input end of the suction filter 8 is communicated with an air source, and the driving motor 7 is used for driving the compressor 1;
the height of the input end of the oil separator 2 is lower than that of the output end of the compressor 1, the input end of the oil separator 2 is connected with the output end of the compressor 1 through a pipeline, the output end of the gas circuit of the oil separator 2 is communicated with a next-stage gas recovery processing device, the gas recovery processing device is downstream equipment of a compressor set and comprises but is not limited to a gas storage tank connected with a cooler or gas separation equipment connected with the cooler, the lubricating oil output end of the oil separator 2 is connected with the input end of the oil cooler 3 through a pipeline, the oil cooler 3 is a shell-and-tube heat exchanger, and circulating water is used as a cooling medium;
the input end of the oil pump is connected with the output end of the oil cooler 3 through a pipeline, the output end of the oil pump is connected with the input end of the oil filter 5 through a pipeline, and the output end of the oil filter 5 is connected with the lubricating oil input end of the compressor 1 through a pipeline;
the control loop is arranged on the pipeline and consists of a plurality of pipeline valves and a plurality of sensors, and can control the opening and closing of each pipeline valve according to data fed back by each sensor so as to adjust the oil supply temperature, the oil supply pressure difference and the load of the compressor;
the control box 13 is connected with a control loop, and the control box 13 can preset parameters of all sensors of the control loop.
In the existing compressor unit products, due to the fact that the arrangement scheme from the compressor to the oil separator is unreasonable or the piping scheme is unreasonable, oil of the compressor is difficult to discharge, a large amount of lubricating oil is stored in the exhaust pipe after the compressor is stopped, and the compressor cannot be started smoothly again. Through the input of reasonable adjustment oil separator 2 and the output height of compressor 1, can ensure that the compressor oil extraction is smooth and easy, and the compressor is shut down the back and inside lubricating oil that can not store up of blast pipe simultaneously, can guarantee to shut down the back and start smoothly once more.
In a particular embodiment, the compressor 1 and the drive motor 7 are provided on a fine-machined frame. The conventional compressor and the frame of the driving motor are directly welded by adopting a steel structure, and the mounting surface is not subjected to finish machining. The low flatness and roughness of the frame can cause the compressor to vibrate greatly in actual operation, the service life of the compressor is seriously attenuated, and the maintenance cost is increased. The compressor and the driving motor are arranged on the same fine-machined rack, so that the vibration of the compressor and the transmission of the vibration can be reduced.
As shown in fig. 4 and 5, the compressor 1 and the driving motor 7 are disposed on the first finishing frame on the oil separator 2, and the compact arrangement can save the space occupied by the compressor set, the first finishing frame uses the oil separator 2 as a supporting base, and the first finishing frame includes a first compressor mechanism seat and a first driving motor mechanism seat;
the first compressor mechanism seat is formed by assembling and welding a compressor mechanism seat welding reinforcing plate 1-1, a first compressor mechanism seat supporting plate 1-2, a first rib plate 1-3, a second rib plate 1-4, a third rib plate 1-5 and a first compressor mechanism seat cover plate 1-6, and the first rib plate 1-3, the second rib plate 1-4 and the third rib plate 1-5 are used as reinforcing ribs to ensure that the first compressor mechanism seat has enough strength and improve the anti-vibration capability of the first compressor mechanism seat;
the first driving motor mechanism seat is formed by assembling and welding a driving motor mechanism seat welding reinforcing plate 7-1, a driving motor mechanism seat welding reinforcing plate 7-2, a driving motor mechanism seat first rib plate 7-3, a driving motor mechanism seat second rib plate 7-4 and a first driving motor mechanism seat cover plate 7-5, and the driving motor mechanism seat first rib plate 7-3 and the driving motor mechanism seat second rib plate 7-4 are taken as reinforcing ribs to ensure that the first driving motor mechanism seat has enough strength and improve the anti-vibration capability of the first driving motor mechanism seat;
and after all welding works are finished, the machine tool is used for carrying out finish machining and boring treatment on the whole upper surface of the rack, so that the requirements on dimensional accuracy and surface roughness are met.
As shown in fig. 6 and 7, the compressor 1 and the driving motor 7 are arranged on a second finishing machine frame on a common frame a formed by welding H-shaped steel, the common frame is arranged on a ground structure, and the common frame has better anti-vibration effect, the second finishing machine frame takes the common frame a as a supporting base, and the second finishing machine frame comprises a second compressor mechanism seat and a second driving motor mechanism seat;
the second compressor mechanism seat is formed by assembling and welding a second compressor mechanism seat supporting plate 1-7 and a second compressor mechanism seat cover plate 1-8, and the second compressor mechanism seat supporting plate 1-7 is used as a reinforcing rib to ensure that the second compressor mechanism seat has enough strength and improve the anti-vibration capability;
the second driving motor mechanism seat is formed by assembling and welding a second driving motor mechanism seat supporting plate 7-6 and a second driving motor mechanism seat cover plate 7-7, and the second driving motor mechanism seat supporting plate 7-6 is used as a reinforcing rib to ensure that the second compressor mechanism seat has enough strength and improve the anti-vibration capability;
and after all welding works are finished, the machine tool is used for carrying out finish machining and boring treatment on the whole upper surface of the rack, so that the requirements on dimensional accuracy and surface roughness are met.
In a particular embodiment, the gradient of the pipe between the input of the oil separator 2 and the output of the compressor 1 is between 0.5% and 1.0%. The method is suitable for obtaining the pipeline with the gradient of 0.5 percent through limited experiments.
In the specific embodiment, the gas path output end of the oil separator 2 is provided with an exhaust check valve 9-2, and the input end of the suction filter 8 is provided with a suction check valve 9-1. The check valves are arranged at the air inlet end and the air outlet end of the compressor unit, so that the compressor can be effectively prevented from reversing when the compressor is stopped.
In a specific embodiment, the oil separator 2 is provided with an oil return pipeline, the oil return pipeline is connected to an input end of the compressor 1, and the oil return pipeline is provided with an oil return valve 10 with an adjustable opening degree and an oil return sight glass 11. The oil return valve plays a role in safety protection and constant-pressure overflow, oil return enters the compressor along with air intake of the compressor through the oil return pipeline, the oil return sight glass is of a swing type, actual oil return conditions can be observed conveniently, and the opening degree of the oil return valve is determined according to the actual oil return conditions.
In a particular embodiment, the control circuits include an oil supply temperature control circuit, an oil supply differential pressure control circuit, and a compressor load control circuit;
the oil supply temperature control loop is arranged on a pipeline between the input end of the oil pump and the output end of the oil cooler 3, and as shown in fig. 8, the oil supply pressure difference control loop comprises an oil supply temperature control valve 6-1 and an oil supply temperature sensor; the oil supply temperature sensor and the oil supply temperature control valve 6-1 form a control loop to accurately control the oil supply temperature, when the oil supply temperature is higher than the set value of the sensor, an opening a of the oil supply temperature control valve is large, and an opening b of the oil supply temperature control valve is small, so that the flow of lubricating oil passing through the oil cooler is increased, and the oil supply temperature is further reduced; when the oil supply temperature is lower than a set value, the opening b of the oil supply temperature control valve is opened greatly, and the opening a is closed slightly, so that the flow of lubricating oil passing through the oil cooler is reduced, and the oil supply temperature is increased;
the oil supply pressure difference control loop is arranged on a pipeline between the output end of the oil filter 5 and the lubricating oil input end of the compressor 1, the oil supply pressure difference control loop is connected with the oil separator 2, and as shown in fig. 9, the oil supply pressure difference control loop comprises an oil supply pressure difference control valve 6-2 and an oil supply pressure sensor; the oil supply pressure sensor and the oil supply differential pressure control valve 6-2 form a control loop to accurately control the oil supply differential pressure, when the oil supply differential pressure is higher than a set value, the oil supply differential pressure control valve 6-2 is opened greatly, the flow rate of lubricating oil which bypasses the oil separator is increased, the flow rate of the lubricating oil which passes through the compressor is reduced, and the oil supply differential pressure is further reduced; when the oil supply pressure difference is lower than the set value, the oil supply pressure difference control valve 6-2 is closed, the flow of the lubricating oil which bypasses the oil separator is reduced, the flow of the lubricating oil which passes through the compressor is increased, and the oil supply pressure difference is further improved.
The compressor load control circuit is arranged on a pipeline between the output end of the oil filter 5 and a slide valve of the compressor 1, the compressor load control circuit is connected with the input end of the compressor 1, and the compressor load control circuit comprises a capacity control electromagnetic valve 12 and a suction pressure sensor.
The compressor adopts a slide valve to carry out capacity adjustment, power is from oil pressure on an oil supply loop, and the air quantity bypassed to an air inlet in a compression cavity is further controlled through the axial movement of the slide valve in the compressor shell, so that the stepless adjustment of the load of the compressor is realized, and the highest efficiency of the compressor can be kept when the compressor is partially loaded.
As shown in fig. 10, the suction pressure sensor and the capacity control solenoid valve 12 form the control loop, the capacity control solenoid valve 12 is a three-position four-way electromagnetic directional valve, the movement of the valve core is realized by the suction force of the electromagnet, the on-off of the oil path is changed, and the three-position four-way electromagnetic directional valve is provided with four oil ports P, T, a and B;
when the suction pressure is higher than a set value, the capacity control electromagnetic valve 12 is loaded, P and B of the three-position four-way electromagnetic directional valve are conducted, A and T are conducted simultaneously, a slide valve in the compressor carries out loading action, and the suction volume is increased;
when the suction pressure is lower than a set value, the capacity control electromagnetic valve 12 is unloaded, P and A of the three-position four-way electromagnetic reversing valve are conducted, B and T are conducted simultaneously, and a slide valve in the compressor carries out the unloading action to reduce the suction volume.
The utility model discloses can the accurate control fuel feeding temperature, can the accurate control fuel feeding pressure differential, can the accurate control compressor load, have safe and reliable's advantage, control circuit has ensured that the compressor obtains the optimum lubrication and cooling, makes the compressor keep the maximum efficiency when the part load, has prolonged the life of compressor.
In a specific embodiment, the oil pump is configured as a one-use-one-standby configuration. As shown in fig. 11, the oil pump includes a first oil pump 4-1 and a second oil pump 4-2, and the oil pumps are configured as a single-use and a backup, so that normal oil supply can be ensured when a fault occurs or maintenance is required.
In the specific embodiment, the oil filter 5 is configured as a one-use-one-standby. As shown in fig. 11, the oil filter 5 is configured as a one-use-one-standby so that it can be replaced without shutdown.
In the embodiment, the compressor 1, the driving motor 7, the control box 13, the pipeline valves and the sensors are all explosion-proof. The utility model discloses an explosion-proof compressor, explosion-proof driving motor, explosion-proof control box, explosion-proof instrument, explosion-proof control valve, explosion-proof sensor and no spark shaft coupling guard shield.
In the technical fields of petrochemical industry, natural gas treatment and the like, because flammable and explosive gas possibly exists in production places, if a common compressor unit is adopted, the flammable and explosive gas can be detonated due to electric sparks or high temperature, so that explosion accidents are generated, and serious consequences of casualties, factory buildings and equipment damage can be generated. Therefore, explosion-proof compressor trains are of critical importance for these workplaces. The matched electric appliance, the instrument and the control component adopt explosion-proof types, so that accidents can be effectively avoided.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (9)
1. An oil-injected screw compressor unit, comprising: the oil cooling system comprises a compressor (1), an oil separator (2), an oil cooler (3), an oil pump, an oil filter (5), a driving motor (7), an air suction filter (8), a control box (13) and a control circuit;
the output end of the suction filter (8) is connected with the input end of the compressor (1), the input end of the suction filter (8) is communicated with an air source, and the driving motor (7) is used for driving the compressor (1);
the height of the input end of the oil separator (2) is lower than that of the output end of the compressor (1), the input end of the oil separator (2) is connected with the output end of the compressor (1) through a pipeline, the gas path output end of the oil separator (2) is connected with a next-stage gas recovery processing device, and the lubricating oil output end of the oil separator (2) is connected with the input end of the oil cooler (3) through a pipeline;
the input end of the oil pump is connected with the output end of the oil cooler (3) through a pipeline, the output end of the oil pump is connected with the input end of the oil filter (5) through a pipeline, and the output end of the oil filter (5) is connected with the lubricating oil input end of the compressor (1) through a pipeline;
the control loop is arranged on the pipeline and consists of a plurality of pipeline valves and a plurality of sensors, and can control the opening and closing of each pipeline valve according to data fed back by each sensor so as to regulate the oil supply temperature, the oil supply pressure difference and the load of the compressor;
the control box (13) is connected with a control loop, and the control box (13) can preset parameters of all sensors of the control loop.
2. An oil injected screw compressor group according to claim 1, characterized in that the compressor (1) and the driving motor (7) are arranged on a fine machining frame.
3. An oil-injected screw compressor group according to claim 1, characterized in that the gradient of the line between the input of the oil separator (2) and the output of the compressor (1) is 0.5-1.0%.
4. An oil-injected screw compressor unit according to claim 1, characterized in that the gas path output of the oil separator (2) is provided with a gas discharge check valve (9-2), and the input of the gas suction filter (8) is provided with a gas suction check valve (9-1).
5. An oil-injected screw compressor unit according to claim 1, characterized in that the oil separator (2) is provided with an oil return line, which is connected to the input of the compressor (1) and which is provided with an oil return valve (10) with an adjustable opening and an oil return sight glass (11).
6. An oil-injected screw compressor unit according to claim 1, wherein the control circuit includes an oil supply temperature control circuit, an oil supply pressure difference control circuit, and a compressor load control circuit;
the oil supply temperature control loop is arranged on a pipeline between the input end of the oil pump and the output end of the oil cooler (3), and the oil supply pressure difference control loop comprises an oil supply temperature control valve (6-1) and an oil supply temperature sensor;
the oil supply differential pressure control loop is arranged on a pipeline between the output end of the oil filter (5) and the lubricating oil input end of the compressor (1), the oil supply differential pressure control loop is connected with the oil separator (2), and the oil supply differential pressure control loop comprises an oil supply differential pressure control valve (6-2) and an oil supply pressure sensor;
the compressor load control loop is arranged on a pipeline between the output end of the oil filter (5) and a slide valve of the compressor (1), the compressor load control loop is connected with the input end of the compressor (1), and the compressor load control loop comprises a capacity control electromagnetic valve (12) and a suction pressure sensor.
7. An oil-injected screw compressor assembly according to claim 1, wherein the oil pump is configured on a one-to-one basis.
8. An oil-injected screw compressor assembly according to claim 1, characterized in that the oil filter (5) is configured as a one-use-one-standby.
9. An oil-injected screw compressor unit according to claim 1, characterized in that the compressor (1), the drive motor (7), the control box (13) and the line valves and sensors are of explosion-proof type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222018049.2U CN217813929U (en) | 2022-08-02 | 2022-08-02 | Oil injection screw compressor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222018049.2U CN217813929U (en) | 2022-08-02 | 2022-08-02 | Oil injection screw compressor unit |
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| CN217813929U true CN217813929U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222018049.2U Active CN217813929U (en) | 2022-08-02 | 2022-08-02 | Oil injection screw compressor unit |
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| CN (1) | CN217813929U (en) |
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- 2022-08-02 CN CN202222018049.2U patent/CN217813929U/en active Active
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