Sealing and vacuumizing structure of carbon dioxide compressor

Abstract

The utility model discloses a sealed vacuumizing structure of a carbon dioxide compressor, and relates to the field of compressors. A flow guide hole is formed in an air seal of the carbon dioxide compressor, a vacuum transmitting pipe extending to the outside of the carbon dioxide compressor is connected and installed in the flow guide hole, a vacuum transmitter is connected and installed at one end of the vacuum transmitting pipe, and an exhaust pipe is connected and installed at the air outlet end of the vacuum transmitter. The vacuum transmitting tube is connected and mounted on the side wall of the vacuum transmitter, the bottom end of the vacuum transmitter is also connected and mounted with an air inlet tube, and one end of the air inlet tube is communicated with a clean air source. Clean gas provided by a source enters from a gas inlet pipe, the gas inlet amount is adjusted through a needle valve, then the clean gas enters a vacuum emitter, negative pressure is formed in a flow guide hole in a gas seal through high-speed circulating gas flow, leaked carbon dioxide gas is sucked out along with the negative pressure, and the leaked carbon dioxide gas enters a gas aftertreatment device through an exhaust pipe; therefore, the carbon dioxide gas leaked from the compressor can be recovered.

Description

Technical Field

[0001] The utility model belongs to the field of compressors, and more specifically, it particularly relates to a vacuum pumping structure for the seal of a carbon dioxide compressor. Background Art

[0002] The main function of a carbon dioxide compressor is to increase the pressure of carbon dioxide gas to meet the reaction conditions of a high-pressure system. After the compressor starts, CO2 gas enters the interior of the compressor, and through the high-speed rotation of the impeller, the gas is compressed. However, when the impeller rotates at high speed, gas leakage will occur. Even if labyrinth seals or carbon ring seals are used for sealing, there will still be gas leakage, resulting in waste of CO2 gas and prone to carbon pollution. Summary of the Utility Model

[0003] In view of the problems in the related art, the present utility model proposes a vacuum pumping structure for the seal of a carbon dioxide compressor to overcome the above-mentioned technical problems existing in the prior related art.

[0004] To solve the above technical problems, the present utility model is realized through the following technical solutions:

[0005] The present utility model is a vacuum pumping structure for the seal of a carbon dioxide compressor, which is applied to a carbon dioxide compressor. A diversion hole is provided on the gas seal of the carbon dioxide compressor, and a vacuum emission tube extending to the outside of the carbon dioxide compressor is connected and installed in the diversion hole. One end of the vacuum emission tube is connected and installed with a vacuum emitter, and the air outlet end of the vacuum emitter is connected and installed with an exhaust pipe.

[0006] Further, the vacuum emission tube is connected and installed on the side wall of the vacuum emitter, and an intake pipe is also connected and installed at the bottom end of the vacuum emitter.

[0007] Further, one end of the intake pipe is communicated with a clean gas source.

[0008] Further, a needle valve is connected and installed between the vacuum emitter and the intake pipe.

[0009] Further, one end of the vacuum emission tube is connected and installed with a three-way joint, and the vacuum emission tube is connected with two sub-conduits through the three-way joint, and the two sub-conduits are respectively communicated with the diversion holes on the gas seals at both ends of the carbon dioxide compressor.

[0010] The present utility model has the following beneficial effects:

[0011] 1. In the present utility model, a diversion hole is opened on the gas seal of the carbon dioxide compressor, and a vacuum emission tube is inserted into the diversion hole. By providing clean gas, it enters from the intake pipe, and the intake volume is adjusted through a needle valve. Then it enters the vacuum emitter, and through the high-speed flowing air current, a negative pressure is formed in the diversion hole inside the gas seal. Then the leaked carbon dioxide gas is sucked out and enters the gas post-treatment device through the exhaust pipe, so that the leaked carbon dioxide gas of the compressor can be recovered. It can not only prevent the waste of carbon dioxide gas, but also prevent the carbon dioxide gas from leaking into the air and causing carbon pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 Schematic three-dimensional structure diagram of the vacuum pumping structure of the present utility model;

[0014] Figure 2 Schematic side structure diagram of the vacuum pumping structure of the present utility model;

[0015] Figure 3 For the present utility model Figure 2 Cross-sectional view of the A-A section;

[0016] Figure 4 For the present utility model Figure 3 Schematic diagram of the enlarged partial structure at I;

[0017] Figure 5 For the present utility model Figure 3 Schematic diagram of the enlarged partial structure at II.

[0018] In the figure: 1. Exhaust pipe; 2. Vacuum emitter; 3. Needle valve; 4. Vacuum emission tube; 5. Three-way joint; 6. Sub-duct; 7. Intake pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the utility model.

[0021] Please refer to Figures 1-5 As shown, the present utility model is a sealing vacuum pumping structure for a carbon dioxide compressor, which is applied to a carbon dioxide compressor. A diversion hole is provided in the gas seal of the carbon dioxide compressor, and a vacuum emission tube 4 extending to the outside of the carbon dioxide compressor is connected and installed in the diversion hole. One end of the vacuum emission tube 4 is connected and installed with a vacuum emitter 2, and the air outlet end of the vacuum emitter 2 is connected and installed with an exhaust pipe 1; the vacuum emission tube 4 is connected and installed on the side wall of the vacuum emitter 2, and an intake pipe 7 is also connected and installed at the bottom end of the vacuum emitter 2; one end of the intake pipe 7 is communicated with a clean gas source;

[0022] When the carbon dioxide compressor is working, the clean gas source sends gas into the vacuum emitter 2 through the intake pipe 7, and then transports it to the gas post-treatment device through the exhaust pipe 1. When the gas flows through the vacuum emitter 2, a negative pressure is formed inside the vacuum emitter 2 due to the gas flow, so that the vacuum emitter 2 sucks the diversion hole in the gas seal of the carbon dioxide compressor through the vacuum emission tube 4 to form a negative pressure, and then the leaked carbon dioxide gas is sucked out accordingly, and successively passes through the vacuum emission tube 4, the vacuum emitter 2 and the exhaust pipe 1 and enters the gas post-treatment device to recover the leaked carbon dioxide gas.

[0023] Specifically, a needle valve 3 is connected and installed between the vacuum emitter 2 and the intake pipe 7, and the flow rate of the gas flow from the origin into the vacuum emitter 2 can be adjusted through the needle valve 3, so as to adjust the negative pressure suction of the vacuum emitter 2 and the suction force for the leaked carbon dioxide gas.

[0024] Specifically, one end of the vacuum emission tube 4 is connected and installed with a tee joint 5, and the vacuum emission tube 4 is connected with two branch conduits 6 through the tee joint 5. The two branch conduits 6 are respectively communicated with the diversion holes on the gas seals at both ends of the carbon dioxide compressor. The vacuum emission tube 4 is connected with the gas seals at both ends of the carbon dioxide compressor through the cooperation of the tee joint 5 and the two branch conduits 6, so that the sealing vacuum pumping mechanism can recover the carbon dioxide gas leaked at both ends of the carbon dioxide compressor at the same time.

[0025] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0026] The preferred embodiments of the utility model disclosed above are only used to help illustrate the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the utility model, so that those skilled in the relevant technical field can well understand and utilize the utility model.

Claims

1. A sealing and vacuuming structure for a carbon dioxide compressor, which is applied to a carbon dioxide compressor, and is characterized in that: A diversion hole is provided on the gas seal of the carbon dioxide compressor, and a vacuum emission tube (4) extending to the outside of the carbon dioxide compressor is connected and installed in the diversion hole. One end of the vacuum emission tube (4) is connected and installed with a vacuum emitter (2), and the air outlet end of the vacuum emitter (2) is connected and installed with an exhaust pipe (1).

2. The vacuum pumping structure for sealing a carbon dioxide compressor according to claim 1, wherein: The vacuum emission tube (4) is connected and installed on the side wall of the vacuum emitter (2), and an intake pipe (7) is also connected and installed at the bottom end of the vacuum emitter (2).

3. A carbon dioxide compressor sealing and vacuuming structure according to claim 2, characterized in that: One end of the intake pipe (7) is communicated with a clean gas source.

4. A carbon dioxide compressor sealing and vacuuming structure according to claim 2, characterized in that: A needle valve (3) is connected and installed between the vacuum emitter (2) and the intake pipe (7).

5. A carbon dioxide compressor sealing and vacuuming structure according to claim 1, characterized in that: One end of the vacuum emission tube (4) is connected and installed with a tee joint (5), and the vacuum emission tube (4) is connected with two sub-conduits (6) through the tee joint (5). The two sub-conduits (6) are respectively communicated with the diversion holes on the gas seals at both ends of the carbon dioxide compressor.

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