Air separation compressor used for operating in low-temperature environment

Abstract

The utility model relates to an air separation compressor used for operating in a low-temperature environment, which comprises a compressor cylinder body provided with an air inlet allowing air to enter and an air outlet allowing air to be discharged, and further comprises a guide vane driving mechanism heating assembly which comprises an annular pipe and a conduction pipe. The annular pipe is axially mounted on the outer surface of a compressor cylinder body of the air inlet side guide vane, and a plurality of air outlet holes are formed in the annular pipe towards the air inlet side guide vane; the first end of the conduction pipe is communicated with the annular pipe, and the second end of the conduction pipe is mounted on the air outlet side; three compression sections are arranged in the compressor cylinder body and used for compressing a working medium for multiple times, the first compression section is connected with the air inlet, the third compression section is connected with the air outlet, the second compression section is arranged between the first compression section and the third compression section, and a guide vane is arranged at an inlet of the first compression section. The problem that the compressor inlet guide vane driving mechanism of the air separation device in the low-temperature environment is prone to freezing and does not act is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air separation device technical field, specifically, relate to a kind of air separation compressor for running in low temperature environment. BACKGROUND

[0002] Air separation device is the device of air separation into oxygen, nitrogen, argon and other gases, is widely used in metallurgy, chemical industry, electronics, medical treatment and other industries.

[0003] Air separation device compressor inlet pipeline and inlet guide vane drive mechanism position is frosted and iced when environmental temperature is lower than-10 ℃, winter temperature is lower than-30 ℃ in Xinjiang local area, leading to the inlet guide vane drive mechanism of air separation compressor in winter low temperature environment is stuck in the process of running and triggers unit protection interlock trip, air separation system is parked, air separation device transports nitrogen, argon supply interruption, affect the normal production of subsequent system. SUMMARY

[0004] The utility model solves the technical problems that the inlet guide vane drive mechanism of prior art air separation compressor in low temperature environment is prone to freeze and inaction.

[0005] To solve the above technical problems, according to the utility model provides a kind of air separation compressor for running in low temperature environment.The air separation compressor includes compressor cylinder, with the gas inlet for gas to enter and the gas outlet for gas to discharge, wherein, still including guide vane drive mechanism heating assembly, the guide vane drive mechanism heating assembly includes annular pipe and conducting pipe, the annular pipe is axially installed on the outer surface of the compressor cylinder of the inlet side guide vane, and a plurality of gas outlets are formed on the annular pipe towards the inlet side guide vane drive mechanism;The first end of the conducting pipe is communicated with the annular pipe, and the second end of the conducting pipe is installed at the gas outlet side.

[0006] Preferably, the annular pipe is a closed circular pipe.

[0007] Preferably, the annular pipe is divided into a first section and a second section, the first section and the second section are connected by a pipe connecting piece to form a closed circular ring, and the flange is installed on the outer surface of the compressor cylinder of the inlet side guide vane.

[0008] Preferably, the first section and the second section are the same semicircular shape.

[0009] Preferably, the pipe connecting piece is a flange or a loose thread.

[0010] Preferably, the material of the annular pipe is stainless steel or carbon steel.

[0011] Preferably, a valve is installed on the conducting pipe for controlling the opening and closing of the conducting pipe.

[0012] Preferably, the compressor cylinder has three compression sections inside for multiple compression of the working medium, wherein the first compression section is connected with the gas inlet, the third compression section is connected with the gas outlet, the second compression section is arranged between the first compression section and the third compression section, and the first compression section inlet is provided with guide vanes.

[0013] Preferably, the air separation compressor further comprises a rotor arranged in the compressor cylinder.

[0014] Preferably, the air separation compressor further comprises a heat exchange mechanism arranged in the compressor cylinder for multiple cooling of the compressed gas.

[0015] Compared with the prior art, the technical scheme provided by the embodiment of the utility model has at least the following beneficial effects:

[0016] During the operation of the air separation compressor, the hot air after three-stage or two-stage compression has a temperature higher than 96 DEG C and a pressure greater than or equal to 0.51 MPa, the conducting pipe guides the hot air to the annular pipe, the hot air is sprayed out through the multiple gas outlets to heat the surface of the guide vane driving mechanism and the compressor cylinder near the guide vane driving mechanism, and the surface temperature of the guide vane driving mechanism and the compressor cylinder near the guide vane driving mechanism on the gas inlet side is kept above 0 DEG C, so that icing and frosting do not occur, and thus the problem that the guide vane driving mechanism of the compressor inlet of the air separation device in a low-temperature environment is prone to freezing and inaction is avoided.

[0017] The guide vane driving mechanism heating assembly has simple structure and is easy to manufacture, is suitable for directly modifying the existing compressor, has low cost and good effect, is also suitable for the air separation compressor with adjustable guide vanes and multiple-stage compression, and has wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings of the embodiments will be briefly introduced below, and obviously, the drawings described below only relate to some embodiments of the utility model, rather than limit the utility model.

[0019] Figure 1 It is a structure schematic view of an air separation compressor for operation in a low-temperature environment provided by the embodiment 1;

[0020] Figure 2 It is a side view of the air separation compressor of the embodiment 1; Figure 1

[0021] Figure 3 It is a top view of the air separation compressor of the embodiment 1; Figure 1

[0022] Figure 4 It is a side view of the air separation compressor of the embodiment 2;​​Figure 1 Structure diagram of the guide vane driving mechanism heating assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of the present application.

[0024] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the common meanings thereof by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the description of the present patent application and claims are not intended to denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" and similar terms do not denote a quantity limitation, but denote the existence of at least one.

[0025] Embodiment 1

[0026] With reference to Figures 1 to 4 The embodiment provides a kind of air separation compressor for low temperature environment, including compressor cylinder 1, with the gas inlet 11 for gas to enter and the gas outlet 12 for gas to discharge.

[0027] The compressor cylinder 1 has 3 compression sections, for multiple compression of working substance, wherein, first compression section is connected with the gas inlet 11, third compression section is connected with the gas outlet 12, second compression section is arranged between the first compression section and the third compression section.The first compression section, second compression section and third compression section are all equipped with guide vane.

[0028] The air separation compressor further includes guide vane driving mechanism heating assembly 2, and the guide vane driving mechanism heating assembly 2 includes annular pipe 21 and conducting pipe 22.

[0029] The annular pipe 21 is axially mounted on the outer surface of the compressor cylinder 1 of the inlet guide vane, that is, the outer surface of the compressor cylinder 1 between the air inlet 11 and the first compression section, and a plurality of air outlet holes 212 are formed on the annular pipe 21 towards the air inlet side guide vane driving mechanism, that is, a plurality of air outlet holes 212 are formed on the annular pipe 21 towards the first compression section. Specifically, the annular pipe 21 is divided into a first section 213 and a second section 214, which are the same semicircular shape and have heat transfer performance. The first section 213 and the second section 214 are connected by a pipe connecting piece 215 to form a closed circular ring. The pipe connecting piece 215 is a flange or a live joint thread. The pipe connecting piece 215 is mounted on the outer surface of the compressor cylinder 1 between the air inlet 11 and the first compression section. The material of the annular pipe 21 is stainless steel or carbon steel, and the pipe diameter is preferably DN15. The number of air outlet holes 212 is 30 to 60, and the diameter is 2 mm. The diameter of the closed circular ring formed by the annular pipe 21 is greater than the diameter of the compressor cylinder 1 between the air inlet 11 and the first compression section, and is preferably 350 to 650 mm.

[0030] The first end of the conducting pipe 22 communicates with the annular pipe 21, and the second end of the conducting pipe is mounted on the air outlet 12 side, that is, the second end of the conducting pipe 22 is mounted between the third compression section and the air outlet 12. Specifically, the first section 213 is provided with an opening to communicate with the conducting pipe 22. The conducting pipe preferably has a heat preservation performance material. Preferably, a valve is mounted on the conducting pipe 22 for controlling the opening and closing of the conducting pipe 22.

[0031] The air separation compressor further comprises a rotor arranged in the compressor cylinder 1.

[0032] The air separation compressor further comprises a heat exchange mechanism arranged in the compressor cylinder 1 for cooling the compressed gas multiple times. The specific structure is referred to the prior art.

[0033] During operation of the air separation compressor, the temperature of the hot air after three-stage compression is higher than 96℃, and the pressure is greater than or equal to 0.51MPa. The conducting pipe 22 guides the hot air to the annular pipe 21, and the hot air is sprayed out through the plurality of air outlet holes 212 to heat the surface of the guide vane driving mechanism and the nearby compressor cylinder 1, so that the surface temperature of the guide vane driving mechanism and the nearby compressor cylinder of the first compression section is maintained above 0℃, and icing and frosting do not occur. Therefore, the problem of the compressor inlet guide vane driving mechanism of the air separation device in low temperature environment being prone to freezing and not working is avoided.

[0034] Compared with the prior art, the guide vane driving mechanism heating assembly has simple structure, is easy to manufacture, is suitable for directly modifying the existing compressor, has low cost and good effect.

[0035] Embodiment 2

[0036] The embodiment provides another air separation compressor for operation in a low-temperature environment, which is basically the same as the embodiment 1, except for the following differences:

[0037] The annular pipe 21 is a closed circular pipe, which is communicated with the first end of the conducting pipe 22, and the annular pipe 21 further comprises a mounting frame, which is axially mounted on the outer surface of the compressor cylinder 1 between the air inlet 11 and the first compression section.

[0038] The compressor cylinder 1 has two compression sections for twice compression of the working medium, wherein the first compression section is connected with the air inlet 11, the second compression section is connected with the air outlet 12, and the first compression section is connected with the second compression section. The temperature of the hot air after the two-stage compression is still higher than 96 DEG C, and the pressure is greater than or equal to 0.51 MPa.

[0039] In addition to the advantages of the embodiment 1, the flange connection is reduced in the embodiment, and the processing and installation are easy; and the embodiment is also suitable for two-stage compression and other air separation compressors equipped with adjustable guide vane multi-stage compression.

[0040] The above only describes the exemplary embodiments of the present application, and is not used to limit the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. An air separation compressor for operation in low-temperature environments, comprising a compressor cylinder having an inlet for gas entry and an outlet for gas discharge, characterized in that, It also includes a guide vane drive mechanism heating assembly, which includes an annular tube and a conductive tube. The annular tube is axially installed on the outer surface of the compressor cylinder of the guide vane on the inlet side. Multiple air outlet holes are opened on the annular tube facing the guide vane drive mechanism on the inlet side. The first end of the conductive tube is connected to the annular tube, and the second end of the conductive tube is installed on the air outlet side. The compressor cylinder has three compression sections for compressing the working fluid multiple times. The first compression section is connected to the air inlet, the third compression section is connected to the air outlet, and the second compression section is located between the first and third compression sections. The inlet of the first compression section is provided with guide vanes.

2. The air separation compressor according to claim 1, characterized in that, The annular pipe is a closed circular pipe.

3. The air separation compressor according to claim 1, characterized in that, The annular pipe is divided into a first section and a second section. The first section and the second section are connected by a pipe connector so that the annular pipe is a closed ring. The flange is installed on the outer surface of the compressor cylinder of the air inlet side guide vane.

4. The air separation compressor according to claim 3, characterized in that, The first segment and the second segment are the same semi-circular shape.

5. The air separation compressor according to claim 3, characterized in that, The pipe connector is a flange or a threaded union.

6. The air separation compressor according to claim 1, characterized in that, The annular tube is made of stainless steel or carbon steel.

7. The air separation compressor according to claim 1, characterized in that, A valve is installed on the transmission pipe to control its opening and closing.

8. The air separation compressor according to claim 1, characterized in that, The air separation compressor also includes a rotor disposed within the compressor cylinder.

9. The air separation compressor according to claim 1, characterized in that, The air separation compressor also includes a heat exchange mechanism disposed within the compressor cylinder for repeatedly cooling the compressed gas.

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