阅读说明：本技术 一种节能型油冷螺杆空气压缩机 (Energy-saving oil-cooling screw air compressor ) 是由 盛昌国 于 2019-08-19 设计创作，主要内容包括：本发明公开了一种节能型油冷螺杆空气压缩机,包括储气罐体,储气罐体上设有支撑架；支撑架上设有第一空气压缩机、第二空气压缩机和第三空气压缩机,还设有第一换热装置、第二换热装置和第三换热装置；储气罐体上设有进气装置、压力表和出气装置；节能型油冷螺杆空气压缩机外接有油冷装置,油冷装置包括冷凝器和蒸发器；冷凝器和蒸发器之间设置有油冷却器；该油冷却器上设置有冷却介质供给及自动调节组件,油冷却器与压缩机油箱组件相连接。本发明的空气压缩机中的各压缩机可并联工作,也可以串联工作,能耗低,压缩效率高,使用寿命长,安全隐患少；且其油冷装置具有结构合理简单、装配简便,可延长轴承使用寿命和便于维护。(the invention discloses an energy-saving oil-cooled screw air compressor, which comprises an air storage tank body, wherein a support frame is arranged on the air storage tank body; the supporting frame is provided with a first air compressor, a second air compressor, a third air compressor, a first heat exchange device, a second heat exchange device and a third heat exchange device; the gas storage tank body is provided with a gas inlet device, a pressure gauge and a gas outlet device; the energy-saving oil-cooled screw air compressor is externally connected with an oil cooling device, and the oil cooling device comprises a condenser and an evaporator; an oil cooler is arranged between the condenser and the evaporator; the oil cooler is provided with a cooling medium supply and automatic adjusting assembly, and the oil cooler is connected with an oil tank assembly of the compressor. The compressors in the air compressor can work in parallel or in series, so that the energy consumption is low, the compression efficiency is high, the service life is long, and the potential safety hazard is less; and the oil cooling device has the advantages of reasonable and simple structure, simple and convenient assembly, prolonged service life of the bearing and convenient maintenance.)

1. the utility model provides an energy-saving oil cooling screw air compressor which characterized in that: comprises that

the gas storage tank comprises a gas storage tank body (1), wherein a support frame (11) is arranged on the gas storage tank body (1);

The supporting frame (11) is provided with a first air compressor (21), a second air compressor (22) and a third air compressor (23), and is also provided with a first heat exchange device (31), a second heat exchange device (32) and a third heat exchange device (33);

The gas storage tank body (1) is provided with a gas inlet device (14), a pressure gauge (15) and a gas outlet device (16);

The first heat exchange device (31) is provided with a closed accommodating cavity, a vent pipe extending in a curved manner is arranged in the accommodating cavity, and a first air inlet (311) and a first air outlet (312) of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a first water outlet (313) and a first water inlet (314) communicated with the accommodating cavity are respectively arranged near the first air inlet (311) and the first air outlet (312);

The second heat exchange device (32) is provided with a closed accommodating cavity, a vent pipe extending in a curved manner is arranged in the accommodating cavity, and a second air inlet (321) and a second air outlet (322) of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a second water outlet (323) and a second water inlet (324) communicated with the accommodating cavity are respectively arranged near the second air inlet (321) and the second air outlet (322);

the third heat exchange device (33) is provided with a closed accommodating cavity, a vent pipe extending in a curve is arranged in the accommodating cavity, and a third air inlet (331) and a third air outlet (332) of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a third water outlet (333) and a third water inlet (334) communicated with the accommodating cavity are respectively arranged near the third air inlet (331) and the third air outlet (332);

The first air compressor (21) comprising a fourth air inlet (211), a fifth air inlet (212) and a fourth air outlet (213); the second air compressor (22) comprising a sixth air inlet (221), a seventh air inlet (222) and a fifth air outlet (223); the third air compressor (23) comprises an eighth air inlet (231), a ninth air inlet (232) and a sixth air outlet (233);

the energy-saving oil-cooled screw air compressor is externally connected with an oil cooling device (5), and the oil cooling device (5) comprises a condenser and an evaporator; an oil cooler (55) is arranged between the condenser and the evaporator; the oil cooler (55) is provided with a cooling medium supply and automatic adjustment assembly, and the oil cooler (55) is connected with a compressor oil tank assembly; the oil cooler (55) comprises a first heat exchange assembly and a second heat exchange assembly which are independent of each other; refrigerant pipelines are connected between the cooling medium supply and automatic adjustment assembly and the oil cooler (55), and the refrigerant pipelines are a first refrigerant pipeline and a second refrigerant pipeline.

2. the energy saving oil cooled screw air compressor of claim 1, wherein: the cooling medium supply and automatic adjustment assembly comprises a first stop valve (51) and a ball valve (53), and the first stop valve (51) and the ball valve (53) are arranged on the first refrigerant pipeline; one end of the first stop valve (51) is connected with the condenser, and a cooling medium drying and filtering component (52) is arranged between the other end of the first stop valve (51) and one end of the ball valve (53); a second stop valve (54) is arranged at the joint of the other end of the ball valve (53) and the first heat exchange assembly; the cooling medium supply and automatic adjustment assembly further comprises an expansion valve (56), and the expansion valve (56) is arranged on the second refrigerant pipeline; one end of the expansion valve (56) is connected with the ball valve (53), and the other end of the expansion valve (56) is provided with a temperature sensing part; the first refrigerant pipeline and the second refrigerant pipeline are arranged in parallel; the second refrigerant pipeline is communicated with the second heat exchange assembly and is connected with the evaporator; the first refrigerant line is in communication with the first heat exchange assembly and is connected to the evaporator.

3. the energy saving oil cooled screw air compressor of claim 1, wherein: the compressor oil tank assembly comprises a compressor oil tank, and a lubricating oil path is arranged between the compressor oil tank and the oil cooler (55); the lubricating oil way is connected with the first heat exchange assembly and the second heat exchange assembly in series respectively; the lubricating oil path comprises a compressor bearing oil supply pipeline and a compressor bearing oil return pipeline which are mutually communicated with the compressor oil tank, and the temperature sensing component is fixedly arranged on the compressor bearing oil supply pipeline.

4. the energy saving oil cooled screw air compressor of claim 1, wherein: the fourth air outlet (213) is in communication with the first air inlet (311), the first air outlet (312) is in communication with the sixth air inlet (221), and the fifth air outlet (223) is in communication with the second air inlet (321); the second air outlet (322) is communicated with the eighth air inlet (231), the sixth air outlet (233) is communicated with the third air inlet (331), and the third air outlet (332) is communicated with the air inlet device (14); the first air outlet (312) and the second air outlet (322) are both also in communication with the air intake device (14).

5. The energy saving oil cooled screw air compressor of claim 1, wherein: control valves are arranged at the first air inlet (311), the first air outlet (312), the second air inlet (321), the second air outlet (322), the third air inlet (331), the third air outlet (332), the fourth air inlet (211), the fifth air inlet (212), the fourth air outlet (213), the sixth air inlet (221), the seventh air inlet (222), the fifth air outlet (223), the eighth air inlet (231), the ninth air inlet (232) and the sixth air outlet (233); and control valves are arranged at the first water outlet (313), the first water inlet (314), the second water outlet (323), the second water inlet (324), the third water outlet (333) and the third water inlet (334).

6. The energy saving oil cooled screw air compressor of claim 1, wherein: a plurality of first blocking pieces (315) are arranged on the inner side wall of the accommodating cavity of the first heat exchange device (31) and positioned at two sides of the extending direction of the vent pipe arranged in the accommodating cavity at intervals in a staggered manner; a plurality of second blocking pieces (325) are arranged on the inner side wall of the accommodating cavity of the second heat exchange device (32) and positioned at two sides of the extending direction of the vent pipe arranged in the accommodating cavity at intervals in a staggered manner; and a plurality of third baffle plates (335) are arranged on the inner side wall of the accommodating cavity of the third heat exchange device (33) and positioned at two sides of the extending direction of the vent pipe arranged in the accommodating cavity at intervals in a staggered manner.

7. The energy saving oil cooled screw air compressor of claim 1, wherein: the first air compressor (21), the second air compressor (22) and the third air compressor (23) are all electrically connected with the control box (4).

8. the energy saving oil cooled screw air compressor of claim 1, wherein: the bottom of the gas storage tank body (1) is provided with a universal wheel mounting seat (12); the universal wheel mounting seat (12) is detachably connected with a universal wheel (121); the number of the universal wheels (121) is 4.

9. The energy saving oil cooled screw air compressor of claim 1, wherein: one end of the gas storage tank body (1) is provided with a handle (13); the air inlet device (14) and the air outlet device (16) comprise air pipes and one-way valves; a filter box is also arranged on a breather pipe of the air inlet device (14).

10. the energy saving oil cooled screw air compressor of claim 1, wherein: the first heat exchange device (31), the second heat exchange device (32) and the third heat exchange device (33) are sequentially stacked.

Technical Field

the invention relates to the field of compressors, in particular to an energy-saving oil-cooled screw air compressor.

Background

The screw compressor is composed of a pair of parallel, intermeshing female and male screws, and is one of the most widely used rotary compressors. Both single screw and twin screw, and what is commonly referred to as a screw compressor is a twin screw compressor. The screw compressor can be of a dry type or a wet type, the dry type is that no liquid is sprayed in a working cavity, and compressed gas is not polluted, the wet type is that lubricating oil or other liquid is sprayed in the working cavity to cool the compressed gas, sealing is improved, a female rotor, a male rotor and a bearing can be lubricated to realize self transmission, and then oil or other liquid impurities in compressed air are removed through a high-precision filter to obtain high-quality compressed gas. The dry type screw is generally used in occasions with extremely high requirements on gas quality and has small requirements on gas quantity, the dry type screw has a complex structure, is difficult to maintain, and has high noise and high manufacturing cost; the wet type air conditioner is wide in application, simple in structure, easy to maintain, stable and reliable and is commonly used in aerodynamic engineering.

However, the currently used screw air compressor has the following problems:

1. because the temperature of the air after being compressed step by step is continuously increased, and the air with high compression temperature in the next stage needs more power consumption, in order to reduce the air temperature and the compression power consumption, a segmented intercooling structure is often adopted in an air system of a multistage centrifugal air compressor. In summer, the temperature of air is higher, so that the temperature of the air passing through the centrifugal air compressor is higher, if the exhaust temperature of the air compressor is high for a long time, the temperature of the whole centrifugal air compressor is increased, and thus, the parts in the centrifugal air compressor are damaged, the service life of the centrifugal air compressor is influenced for a long time, and great potential safety hazards also exist;

2. The cooling device has a complex structure, is internally arranged in the compressor, is inconvenient to replace and maintain, and has poor cooling effect.

Based on the above situation, the invention provides an energy-saving oil-cooled screw air compressor, which can effectively solve the above problems.

disclosure of Invention

The invention aims to provide an energy-saving oil-cooled screw air compressor. The compressors in the air compressor can work in parallel or in series, so that the energy consumption is low, the compression efficiency is high, the service life is long, and the potential safety hazard is less; and the oil cooling device has the advantages of reasonable and simple structure, simple and convenient assembly, prolonged service life of the bearing and convenient maintenance.

The invention is realized by the following technical scheme:

An energy-saving oil-cooled screw air compressor comprises

The gas storage tank body is provided with a support frame;

The supporting frame is provided with a first air compressor, a second air compressor, a third air compressor, a first heat exchange device, a second heat exchange device and a third heat exchange device;

The gas storage tank body is provided with a gas inlet device, a pressure gauge and a gas outlet device;

the first heat exchange device is provided with a closed accommodating cavity, a vent pipe extending in a curve manner is arranged in the accommodating cavity, and a first air inlet and a first air outlet of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a first water outlet and a first water inlet which are communicated with the accommodating cavity are respectively arranged near the first air inlet and the first air outlet;

The second heat exchange device is provided with a closed accommodating cavity, a vent pipe extending in a curve is arranged in the accommodating cavity, and a second air inlet and a second air outlet of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a second water outlet and a second water inlet which are communicated with the accommodating cavity are respectively arranged near the second air inlet and the second air outlet;

The third heat exchange device is provided with a closed accommodating cavity, a vent pipe extending in a curve is arranged in the accommodating cavity, and a third air inlet and a third air outlet of the vent pipe respectively penetrate out of one opposite side of the accommodating cavity; a third water outlet and a third water inlet communicated with the accommodating cavity are respectively arranged near the third air inlet and the third air outlet;

the first air compressor comprises a fourth air inlet, a fifth air inlet and a fourth air outlet; the second air compressor comprises a sixth air inlet, a seventh air inlet and a fifth air outlet; the third air compressor includes an eighth air inlet, a ninth air inlet, and a sixth air outlet;

The energy-saving oil-cooled screw air compressor is externally connected with an oil cooling device, and the oil cooling device comprises a condenser and an evaporator; an oil cooler is arranged between the condenser and the evaporator; the oil cooler is provided with a cooling medium supply and automatic adjustment assembly and is connected with an oil tank assembly of the compressor; the oil cooler comprises a first heat exchange assembly and a second heat exchange assembly which are independent of each other; refrigerant pipelines are connected between the cooling medium supply and automatic adjustment assembly and the oil cooler and comprise a first refrigerant pipeline and a second refrigerant pipeline.

In the energy-saving oil-cooled screw air compressor, the first air compressor, the second air compressor and the third air compressor are matched with the first heat exchange device, the second heat exchange device and the third heat exchange device, so that the energy-saving oil-cooled screw air compressor can work in parallel (the air inflow of (large) compressed gas is accelerated, or a plurality of air compressors are switched to work to extend the service life of the energy-saving oil-cooled screw air compressor), and can also work in series (the pressure of the compressed air can be improved); set up first heat transfer device, second heat transfer device and third heat transfer device and carry out multiple heat transfer for air compressor's energy consumption reduces, makes the compression efficiency of air improve, the inside part of effectual protection air compressor, and increase air compressor's life, eliminated original potential safety hazard.

the (integral) oil cooler of the oil cooling device in the energy-saving oil-cooled screw air compressor is connected with the refrigerant pipeline in parallel and is connected with the lubricating oil way in series, so that the heat exchange area of the oil cooler can be effectively increased, and the energy consumption is reduced; the temperature sensing component is fixedly arranged on an oil supply pipeline of a compressor bearing, and the expansion valve can automatically adjust the amount of cooling medium liquid supply of the oil cooler according to the oil outlet temperature, so that the load of the integral oil cooler and the temperature difference between the oil supply pipeline of the compressor bearing and an oil return pipeline of the compressor bearing are changed, the oil temperature of the compressor is kept within a design range when the compressor operates in a cooling working condition or a heating working condition, the bearing is fully cooled and lubricated, and the bearing is prevented from being damaged; the device has the characteristics of simple and reasonable structure, long service life, low cost and convenience in processing and production.

According to the energy-saving oil-cooled screw air compressor, the first heat exchange device is arranged between the first air compressor and the second air compressor, the second heat exchange device is arranged between the second air compressor and the third air compressor, the third heat exchange device is arranged between the third air compressor and the air inlet device, and multiple heat exchange is performed, so that the pressure of compressed air is increased, the compressed space after each compression is cooled first, the temperature of gas is reduced, the energy consumption of the air compressor is reduced, the compression efficiency of the air is improved, parts in the air compressor are effectively protected, the service life of the air compressor is prolonged, and the original potential safety hazard is eliminated.

preferably, the cooling medium supply and automatic adjustment assembly includes a first cut-off valve and a ball valve, the first cut-off valve and the ball valve being disposed on the first refrigerant pipe; one end of the first stop valve is connected with the condenser, and a cooling medium drying and filtering component is arranged between the other end of the first stop valve and one end of the ball valve; a second stop valve is arranged at the joint of the other end of the ball valve and the first heat exchange assembly; the cooling medium supply and automatic regulation assembly also comprises an expansion valve, and the expansion valve is arranged on the second refrigerant pipeline; one end of the expansion valve is connected with the ball valve, and the other end of the expansion valve is provided with a temperature sensing part; the first refrigerant pipeline and the second refrigerant pipeline are arranged in parallel; the second refrigerant pipeline is communicated with the second heat exchange assembly and is connected with the evaporator; the first refrigerant line is in communication with the first heat exchange assembly and is connected to the evaporator.

Preferably, the compressor oil tank assembly comprises a compressor oil tank, and a lubricating oil path is arranged and connected between the compressor oil tank and the oil cooler; the lubricating oil way is connected with the first heat exchange assembly and the second heat exchange assembly in series respectively; the lubricating oil path comprises a compressor bearing oil supply pipeline and a compressor bearing oil return pipeline which are mutually communicated with the compressor oil tank, and the temperature sensing component is fixedly arranged on the compressor bearing oil supply pipeline.

Preferably, the fourth air outlet is communicated with the first air inlet, the first air outlet is communicated with the sixth air inlet, and the fifth air outlet is communicated with the second air inlet; the second air outlet is communicated with the eighth air inlet, the sixth air outlet is communicated with the third air inlet, and the third air outlet is communicated with the air inlet device; the first air outlet and the second air outlet are both communicated with the air inlet device.

Preferably, control valves are arranged at the first air inlet, the first air outlet, the second air inlet, the second air outlet, the third air inlet, the third air outlet, the fourth air inlet, the fifth air inlet, the fourth air outlet, the sixth air inlet, the seventh air inlet, the fifth air outlet, the eighth air inlet, the ninth air inlet and the sixth air outlet; and control valves are arranged at the first water outlet, the first water inlet, the second water outlet, the second water inlet, the third water outlet and the third water inlet.

Preferably, a plurality of first blocking pieces are arranged on the inner side wall of the accommodating cavity of the first heat exchange device and positioned on two sides of the extending direction of the vent pipe arranged in the accommodating cavity at intervals in a staggered manner; a plurality of second blocking pieces are arranged on the inner side wall of the accommodating cavity of the second heat exchange device at intervals in a staggered manner and positioned at two sides of the extending direction of the vent pipe arranged in the accommodating cavity; and a plurality of third baffle plates are arranged on the inner side wall of the accommodating cavity of the third heat exchange device and positioned at two sides of the extending direction of the vent pipe arranged in the accommodating cavity at intervals in a staggered manner.

Preferably, the first air compressor, the second air compressor and the third air compressor are all electrically connected with the control box.

preferably, the bottom of the gas storage tank body is provided with a universal wheel mounting seat; the universal wheel mounting seat is detachably connected with a universal wheel; the number of the universal wheels is 4.

Preferably, one end of the gas storage tank body is provided with a handle; the air inlet device and the air outlet device both comprise air pipes and one-way valves; and a filter box is also arranged on the breather pipe of the air inlet device.

Preferably, the first heat exchange device, the second heat exchange device and the third heat exchange device are sequentially stacked.

Compared with the prior art, the invention has the following advantages and beneficial effects:

in the energy-saving oil-cooled screw air compressor, the first air compressor 21, the second air compressor 22 and the third air compressor 23 are matched with the first heat exchange device 31, the second heat exchange device 32 and the third heat exchange device 33, so that the energy-saving oil-cooled screw air compressor can work in parallel (the air inflow of (large) compressed gas is accelerated, or the service life of the energy-saving oil-cooled screw air compressor is prolonged by switching the work of a plurality of air compressors), and can also work in series (the pressure of the compressed air can be improved); set up first heat transfer device 31, second heat transfer device 32 and third heat transfer device 33 and carry out multiple heat transfer for air compressor's energy consumption reduces, makes the compression efficiency of air improve, the inside part of effectual protection air compressor, and increase air compressor's life, eliminated original potential safety hazard.

the (integral) oil cooler of the oil cooling device 5 in the energy-saving oil-cooled screw air compressor is connected with the refrigerant pipeline in parallel and is connected with the lubricating oil way in series, so that the heat exchange area of the oil cooler can be effectively increased, and the energy consumption is reduced; the temperature sensing component is fixedly arranged on an oil supply pipeline of a compressor bearing, and the expansion valve can automatically adjust the amount of cooling medium liquid supply of the oil cooler according to the oil outlet temperature, so that the load of the integral oil cooler and the temperature difference between the oil supply pipeline of the compressor bearing and an oil return pipeline of the compressor bearing are changed, the oil temperature of the compressor is kept within a design range when the compressor operates in a cooling working condition or a heating working condition, the bearing is fully cooled and lubricated, and the bearing is prevented from being damaged; the device has the characteristics of simple and reasonable structure, long service life, low cost and convenience in processing and production.

According to the energy-saving oil-cooled screw air compressor, the first heat exchange device is arranged between the first air compressor and the second air compressor, the second heat exchange device is arranged between the second air compressor and the third air compressor, the third heat exchange device is arranged between the third air compressor and the air inlet device, and multiple heat exchange is performed, so that the pressure of compressed air is increased, the compressed space after each compression is cooled first, the temperature of gas is reduced, the energy consumption of the air compressor is reduced, the compression efficiency of the air is improved, parts in the air compressor are effectively protected, the service life of the air compressor is prolonged, and the original potential safety hazard is eliminated.

drawings

FIG. 1 is a schematic view of the structure of the present invention (omitting the oil cooling device and other parts);

FIG. 2 is a schematic perspective view (I) (omitting the oil cooling device and other parts);

FIG. 3 is a schematic perspective view (II) (omitting the oil cooling device and other parts);

FIG. 4 is a right view of the structure of the present invention (omitting the oil cooling device and other parts of the structure);

FIG. 5 is a schematic structural diagram of an oil cooling device according to the present invention;

FIG. 6 is a schematic structural diagram of a first heat exchange device according to the present invention;

FIG. 7 is a schematic structural diagram of a second heat exchange device according to the present invention;

Fig. 8 is a schematic structural diagram of a third heat exchange device according to the present invention.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Unless otherwise stated, the technical features (components/elements of the present invention) of the air inlet device 14 and the air outlet device 16, etc., in the present invention, are obtained from conventional commercial sources or manufactured by conventional methods, and the specific structure, operation principle, control manner and spatial arrangement manner that may be involved are all conventional choices in the art, which should not be considered as the innovative point of the present invention, and it is understood by those skilled in the art that the present invention is not further specifically described in detail.