Dimethyl ether compressor

Abstract

The utility model relates to the technical field of compressor equipment, in particular to a dimethyl ether compressor which comprises a compressor body, a compressor shell is installed on the outer wall of the compressor body, a support is installed on the shell wall of the compressor shell through bolts, and a base is connected to the bottom of the support through fixing bolts. A cavity groove of the compressor body is provided with a compressor cylinder body, the outer wall of the compressor cylinder body is connected with an O-shaped ring in a sleeved mode, a cylinder opening of the compressor cylinder body is connected with a gasket, the O-shaped ring is located in a ring groove of the gasket, and the compressor body is of a double-layer arrangement structure. The gasket and the O-shaped ring for sealing the compression part are prevented from being made of conventional nitrile rubber buna materials and are made of polytetrafluoroethylene materials, the polytetrafluoroethylene materials have good corrosion resistance, and therefore the service life of the gasket and the service life of the O-shaped ring are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor equipment, in particular to a dimethyl ether compressor. Background Art

[0002] Against the backdrop of the country vigorously promoting the upgrading and transformation of the coking industry and eliminating backward production capacity, energy conservation and environmental protection and the promotion of new processes and new energy for the transformation of coal chemical industry are the current general trend. Among them, the coke oven gas to ethanol project is a key national strategic task. Because traditional ethanol production is refined from grain, ethanol production consumes a large amount of grain, which is an undesirable refining method. The new process for producing ethanol from coke oven gas developed by Dalian Institute of Chemical Physics has been successfully trial-produced in China, opening the market for the use of new coal chemical processes to produce ethanol. The large reciprocating compressors that require a variety of compression media for its matching have brought new challenges and opportunities to our company.

[0003] When the existing dimethyl ether compressor is in operation, due to the physical property that the dimethyl ether compression medium is easily liquefied, the liquefied dimethyl ether is not easy to be smoothly introduced into the separator, thereby reducing the operating efficiency of the dimethyl ether compressor. In addition, the dimethyl ether compression medium in the existing coal-to-ethanol dimethyl ether compression is corrosive to rubber. The gaskets and O-rings used for sealing the compression part are not made of conventional nitrile rubber materials, causing the gaskets and O-rings to be easily corroded. In addition, the intermediate sleeve of the large reciprocating piston compressor is a thin-walled cylindrical casting used to connect the fuselage and the cylinder to transmit large-tonnage alternating gas loads. The traditional circular sleeve has insufficient rigidity, which increases the vibration of the unit and may even cause fracture accidents in severe cases. For this reason, we propose a dimethyl ether compressor to improve the dimethyl ether compressor and increase the strength of the intermediate sleeve. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a dimethyl ether compressor.

[0005] The technical solution adopted by the utility model to solve its technical problems is a dimethyl ether compressor, which includes a compressor body, a compressor shell installed on the outer wall of the compressor body, a bracket installed on the shell wall of the compressor shell by bolts, a base connected to the bottom of the bracket by fixing bolts, a compressor cylinder body installed on the cavity groove of the compressor body, an O-ring sleeved on the outer wall of the compressor cylinder body, a gasket connected to the cylinder mouth of the compressor cylinder body, the O-ring is located in the ring groove of the gasket, and the compressor body adopts a double-layer arrangement structure.

[0006] By adopting the above technical solution and taking into account the physical property of dimethyl ether as a compressed medium that is easily liquefied, the compressor body adopts a double-layer layout structure, raising the intercooler to more than 3 meters, so that the cooler outlet is higher than the separator inlet, so that once liquefied dimethyl ether is available, it can be smoothly introduced into the separator. After connecting the bracket to the base with fixing bolts, the bracket is connected to the compressor housing at the compressor body to achieve the improvement of the compressor body. Considering that the dimethyl ether compressed medium is corrosive to rubber, the gaskets and O-rings used in the compression part seal are not made of conventional nitrile rubber, but are instead made of polytetrafluoroethylene (PTFE). PTFE has excellent corrosion resistance, thereby extending the service life of the gaskets and O-rings.

[0007] Specifically, a connecting cylinder is connected to the cavity of the compressor body.

[0008] By adopting the above technical solution, it is convenient to connect the connecting tube.

[0009] Specifically, the connecting cylinder has a stepped square cross-section, and the connecting surface between the connecting cylinder surface and the compressor body is changed to a square flange cross-section connection.

[0010] By adopting the above technical solution, the stiffness of the connecting tube is significantly enhanced compared to the conventional circular connecting tube, the ability to resist alternating loads is strong, and the vibration of the unit is small.

[0011] Specifically, an air inlet is provided on the compressor body, and an air outlet is provided on the compressor body.

[0012] By adopting the above technical solution, air can be easily taken in through the air inlet and easily exhausted through the air outlet.

[0013] Specifically, the material of the O-ring and the material of the gasket are both polytetrafluoroethylene.

[0014] By adopting the above technical solution, the polytetrafluoroethylene material has good corrosion resistance.

[0015] Beneficial effects of the utility model:

[0016] (1) The dimethyl ether compressor described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is the main figure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the compressor body of the present utility model;

[0020] Figure 3This is a schematic diagram of the compressor cylinder structure of the present utility model;

[0021] In the figure: 1. Compressor body; 2. Bracket; 3. O-ring; 4. Gasket; 5. Compressor cylinder; 6. Compressor casing; 7. Air inlet; 8. Exhaust port; 9. Fixing bolt; 10. Base; 11. Connecting tube. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] As an embodiment of the present invention, Figure 1 、 Figure 2 and Figure 3 As shown, the dimethyl ether compressor described in the present invention includes a compressor body 1, a compressor shell 6 is installed on the outer wall of the compressor body 1, a bracket 2 is installed on the shell wall of the compressor shell 6 by bolts, and the bottom of the bracket 2 is connected to the base 10 by fixing bolts 9. A compressor cylinder 5 is installed at the cavity of the compressor body 1, an O-ring 3 is sleeved on the outer wall of the compressor cylinder 5, a gasket 4 is connected to the cylinder mouth of the compressor cylinder 5, and the O-ring 3 is located in the ring groove of the gasket 4. The compressor body 1 adopts a double-layer arrangement structure.

[0024] During use, due to the physical property of dimethyl ether, a compressed medium that is easily liquefied, the compressor body 1 adopts a double-layer layout structure, raising the intercooler to more than 3 meters, so that the cooler outlet is higher than the separator inlet, so that once liquefied dimethyl ether is available, it can be smoothly introduced into the separator. After connecting the bracket 2 and the base 10 with fixing bolts 9, the bracket 2 is connected to the compressor housing 6 at the compressor body 1 to achieve the elevation of the compressor body 1. Considering that the dimethyl ether compressed medium is corrosive to rubber, the compression section sealing gasket 4 and O-ring 3 avoid using conventional nitrile rubber material and instead use polytetrafluoroethylene material. Polytetrafluoroethylene material has excellent corrosion resistance, thereby extending the service life of gasket 4 and O-ring 3.

[0025] like Figure 1 As shown, a connecting cylinder 11 is connected to the cavity of the compressor body 1.

[0026] When in use, it is convenient to connect the connecting tube 11.

[0027] like Figure 1 As shown, the connecting cylinder 11 is in a stepped square cross-section, and the connecting surface between the connecting cylinder surface and the compressor body 1 is changed to a square flange cross-section connection.

[0028] When in use, the connecting tube 11 has significantly enhanced rigidity compared to a conventional circular connecting tube, has a strong ability to resist alternating loads, and has low unit vibration.

[0029] like Figure 1 As shown, the compressor body 1 is provided with an air inlet 7 and the compressor body 1 is provided with an air outlet 8.

[0030] When in use, air is easily taken in through the air inlet 7 and air is easily exhausted through the air outlet 8 .

[0031] like Figure 2 As shown, the material of the O-ring 3 and the material of the gasket 4 are both polytetrafluoroethylene.

[0032] When in use, polytetrafluoroethylene material has good corrosion resistance.

[0033] When the utility model is in use, the physical property of dimethyl ether compressed medium being easily liquefied is taken into consideration. The compressor body 1 adopts a double-layer arrangement structure, elevating the intercooler to more than 3m, so that the cooler outlet is higher than the separator inlet, so that once liquefied dimethyl ether is available, it can be smoothly introduced into the separator. After the bracket 2 and the base 10 are connected by fixing bolts 9, the bracket 2 is connected to the compressor housing 6 at the compressor body 1 to achieve the improvement of the compressor body 1. Considering that the dimethyl ether compressed medium is corrosive to rubber, the gasket 4 and O-ring 3 used for the compression part seal avoid using conventional nitrile rubber materials and instead use polytetrafluoroethylene materials. Polytetrafluoroethylene materials have good corrosion resistance, thereby increasing the service life of the gasket 4 and O-ring 3. The connecting tube 11 has a stepped square cross-section. Compared with the conventional circular connecting tube, the connecting tube 11 has significantly enhanced rigidity, strong resistance to alternating loads, and low vibration of the unit.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Dimethyl ether compressor, characterized by: The invention comprises a compressor body (1), wherein a compressor shell (6) is installed on the outer wall of the compressor body (1), a bracket (2) is installed on the shell wall of the compressor shell (6) by means of bolts, a base (10) is connected to the bottom of the bracket (2) by means of fixing bolts (9), a compressor cylinder (5) is installed in the cavity of the compressor body (1), an O-ring (3) is sleeve-connected to the outer wall of the compressor cylinder (5), a gasket (4) is connected to the cylinder mouth of the compressor cylinder (5), the O-ring (3) is located in the ring groove of the gasket (4), and the compressor body (1) adopts a double-layer arrangement structure.

2. The dimethyl ether compressor according to claim 1, characterized in that: A connecting cylinder (11) is connected to the cavity of the compressor body (1).

3. The dimethyl ether compressor according to claim 2, characterized in that: The connecting cylinder (11) has a stepped square cross section, and the connecting surface between the connecting cylinder surface and the compressor body (1) is changed to a square flange cross section connection.

4. The dimethyl ether compressor according to claim 1, characterized in that: The compressor body (1) is provided with an air inlet (7) at the body thereof, and the compressor body (1) is provided with an air outlet (8) at the body thereof.

5. The dimethyl ether compressor according to claim 1, characterized in that: The material of the O-ring (3) and the material of the gasket (4) are both polytetrafluoroethylene.

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