Filler cooling device for D-type reciprocating compressor

Abstract

The utility model relates to a packing cooling device for a D-type reciprocating compressor, which comprises a piston rod, a flange, a front packing box and a rear packing box are sequentially sleeved on the piston rod, a plurality of packing boxes are arranged between the front packing box and the rear packing box, and a cooling medium inlet and a cooling medium outlet which penetrate through the flange and the front packing box are respectively arranged on the flange. A first cooling ring is clamped between the front packing box and the packing box, a second cooling ring and a first cooling ring which are sequentially arranged according to an odd-even sequence are arranged between the packing boxes, and a third cooling ring is clamped between the packing box and the rear packing box; one side of each of the first cooling ring, the second cooling ring and the third cooling ring is provided with an inflow channel communicated with the cooling medium inlet, and the other side of each of the first cooling ring, the second cooling ring and the third cooling ring is provided with a backflow channel communicated with the cooling medium outlet. The packing box is reasonable in structure, through the arrangement of the inflow channel and the backflow channel, cooling media can make full contact with the packing box during cooling work, the heat exchange area is increased, and meanwhile heat exchange is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a packing cooling device for a D-type reciprocating compressor. Background Art

[0002] The main function of the compressor packing device is to seal the gap between the cylinder and the piston rod to prevent gas from leaking from the cylinder to the body area. The packing device plays a key role in the overall efficiency and safety of the compressor. During compression, the piston rod will perform high-speed reciprocating motion, which will cause serious frictional heat generation. Therefore, a matching cooling device is required. The existing cooling device is usually an axial single-channel device with a small heat exchange area and uneven heat exchange. When used, it may cause problems such as reduced compressor efficiency and excessive aging of the packing box. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a packing cooling device for a D-type reciprocating compressor.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a packing cooling device for a D-type reciprocating compressor, comprising a piston rod, a flange, a front packing box and a rear packing box are sequentially sleeved on the piston rod, a plurality of packing boxes are arranged between the front packing box and the rear packing box, the flange is respectively provided with a cooling medium inlet and a cooling medium outlet which penetrate the flange and the front packing box, a first cooling ring is sandwiched between the front packing box and the packing box, a second cooling ring and a first cooling ring which are sequentially arranged in an odd-even order are arranged between the packing boxes, a third cooling ring is sandwiched between the packing box and the rear packing box, one side of the first cooling ring, the second cooling ring and the third cooling ring are each provided with an inlet channel communicating with the cooling medium inlet, and the other side is provided with a return channel communicating with the cooling medium outlet, the paths of the inlet channel and the return channel are both circular, and the path diameter of the return channel is smaller than the path diameter of the inlet channel.

[0005] Preferably, the first cooling ring, the second cooling ring and the third cooling ring are each provided with a block for changing the flow direction of the cooling medium, and a buffer device is provided on one side of the block to reduce the possibility of backflow of the cooling medium due to direct collision of the water flow with the block.

[0006] Preferably, the buffer device includes a fixed block, one side of the fixed block is fixedly connected to the stopper by a reset spring, a cavity is formed between the fixed block and the stopper, a first channel for cooling medium to pass through is opened in the cooling ring and on one side of the stopper, a second channel is opened on one side of the first channel and on the side wall of the cavity, the end of the second channel is connected to the first channel, the stopper is arc-shaped, when the cooling medium collides with the stopper, the stopper will compress the reset spring, at this time, both the first channel and the second channel can pass the cooling medium, reducing the possibility of cooling medium reflux.

[0007] The beneficial effects of the present utility model are as follows. Through the settings of the inflow channel and the return channel, the cooling medium can be in full contact with the stuffing box during the cooling operation, increasing the heat exchange area and making the heat exchange more uniform. This effectively improves the working efficiency of the compressor and extends the service life of the stuffing box. Additionally, the buffer device can reduce the possibility of the cooling medium flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0009] Figure 1 is the front view of the present utility model;

[0010] Figure 2 is the left view of the first cooling ring of the present utility model;

[0011] Figure 3 is the right view of the first cooling ring of the present utility model;

[0012] Figure 4 is the left view of the second cooling ring of the present utility model;

[0013] Figure 5 is the right view of the second cooling ring of the present utility model;

[0014] Figure 6 is the left view of the third cooling ring of the present utility model;

[0015] Figure 7 is the right view of the third cooling ring of the present utility model;

[0016] Figure 8 is the top cross-sectional view of the buffer device of the present utility model;

[0017] In the figures, 1. piston rod; 2. flange; 3. front stuffing box; 4. stuffing box; 5. rear stuffing box; 6. second channel; 7. cooling medium inlet; 8. cooling medium outlet; 9. first cooling ring; 10. second cooling ring; 11. third cooling ring; 12. inflow channel; 13. return channel; 14. stop block; 15. fixing block; 16. return spring; 17. first channel; 18. cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] All the features disclosed in this specification, or all the steps in any method or process disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0019] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless specifically recited, may be replaced by other equivalent or alternative features with a similar purpose. That is, unless specifically recited, each feature is only an example of a series of equivalent or similar features.

[0020] As Figure 1-8 shown, a packing cooling device for a D-type reciprocating compressor includes a piston rod 1. A flange 2, a front packing box 3 and a rear packing box 5 are sequentially sleeved on the piston rod 1. A plurality of packing boxes 4 are arranged between the front packing box 3 and the rear packing box 5. The flange 2 is respectively provided with a cooling medium inlet 7 and a cooling medium outlet 8 that penetrate through the flange 2 and the front packing box 3. A first cooling ring 9 is sandwiched between the front packing box 3 and the packing box 4. Second cooling rings 10 and first cooling rings 9 are arranged between the packing boxes 4 in odd and even order respectively. A third cooling ring 11 is sandwiched between the packing box 4 and the rear packing box 5. An inflow channel 12 communicating with the cooling medium inlet 7 is opened on one side of each of the first cooling ring 9, the second cooling ring 10 and the third cooling ring 11, and a return channel 13 communicating with the cooling medium outlet 8 is opened on the other side. The paths of the inflow channel 12 and the return channel 13 are both circular, and the path diameter of the return channel 13 is smaller than that of the inflow channel 12.

[0021] The first cooling ring 9, the second cooling ring 10 and the third cooling ring 11 are all provided with a baffle 14 for changing the flow direction of the cooling medium. A buffer device is arranged on one side of the baffle 14 to reduce the possibility of reverse flow of the cooling medium that may occur when the water flow directly impacts the baffle 14.

[0022] The buffer device includes a fixing block 15. One side of the fixing block 15 is fixedly connected to the baffle 14 through a return spring 16. A cavity 18 is formed between the fixing block 15 and the baffle 14. A first hole 17 for the cooling medium to pass through is opened on one side of the baffle 14 inside the cooling ring. A second hole 6 is opened on the side wall of the cavity 18 on one side of the first hole 17, and the end of the second hole 6 is communicated with the first hole 17. The baffle 14 is arc-shaped. When the cooling medium impacts the baffle 14, the baffle 14 will compress the return spring 16. At this time, both the first hole 17 and the second hole 18 can pass the cooling medium, reducing the possibility of reverse flow of the cooling medium.

[0023] This design is ingenious. Through the arrangement of the inflow channel and the return channel, the cooling medium can be in full contact with the packing box during the cooling operation, increasing the heat transfer area and making the heat transfer more uniform, effectively improving the working efficiency of the compressor and extending the service life of the packing box. In addition, the buffer device can reduce the possibility of reverse flow of the cooling medium.

[0024] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature disclosed in this specification or any new combination thereof, as well as to any new method or process steps disclosed or any new combination thereof.

Claims

1. A stuffing cooling device for a D-type reciprocating compressor, characterized in that: It includes a piston rod (1), on which a flange (2), a front stuffing box (3) and a rear stuffing box (5) are sleeved in sequence. A number of stuffing boxes (4) are arranged between the front stuffing box (3) and the rear stuffing box (5). The flange (2) is respectively provided with a cooling medium inlet (7) and a cooling medium outlet (8) that penetrate through the flange (2) and the front stuffing box (3). A first cooling ring (9) is clamped between the front stuffing box (3) and the stuffing box (4). Second cooling rings (10) and first cooling rings (9) are arranged in sequence according to odd and even orders between the stuffing boxes (4). A third cooling ring (11) is clamped between the stuffing box (4) and the rear stuffing box (5). One side of each of the first cooling ring (9), the second cooling ring (10) and the third cooling ring (11) is provided with an inflow channel (12) communicating with the cooling medium inlet (7), and the other side is provided with a return channel (13) communicating with the cooling medium outlet (8). The paths of the inflow channel (12) and the return channel (13) are both circular, and the path diameter of the return channel (13) is smaller than that of the inflow channel (12).

2. The packing cooling device for a D-type reciprocating compressor according to claim 1, characterized in that: The first cooling ring (9), the second cooling ring (10) and the third cooling ring (11) are all provided with a baffle (14) for changing the flow direction of the cooling medium, and a buffer device is arranged on one side of the baffle (14).

3. The packing cooling device for a D-type reciprocating compressor according to claim 2, characterized in that: The buffer device includes a fixed block (15). One side of the fixed block (15) is fixedly connected to the baffle (14) through a return spring (16). A cavity (18) is formed between the fixed block (15) and the baffle (14). A first hole (17) through which the cooling medium can pass is opened on one side of the baffle (14) inside the cooling ring. A second hole (6) is opened on the side wall of the cavity (18) on one side of the first hole (17), and the end of the second hole (6) is communicated with the first hole (17). The baffle (14) is arc-shaped.

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