A packing seal for a high-pressure reciprocating piston compressor
By using non-contact maze seals in the filler parts of the high-pressure reciprocating compressor, the problem of easy leakage of the filler parts is solved, a more efficient sealing effect is achieved, and the overall efficiency of the compressor is improved.
Patent Information
- Application Number
- CN202421566513.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The filler components of existing high-pressure reciprocating compressors are prone to leakage, resulting in inefficiency of the compressor.
The non-contact maze seal is used to reduce the impact of high-pressure airflow on the seal assembly before the throttling ring group and the sealing ring group, and further reduce leakage through the maze seal of threaded grooves or cogging structures.
It effectively reduces leakage of filler components, reduces economic losses, and improves the efficiency of the compressor.
Smart Images
Figure CN222717025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reciprocating compressor seals, in particular to a packing seal for a high-pressure reciprocating piston compressor. Background Art
[0002] With the increase in global energy consumption and the development of energy science and technology, the requirements for reciprocating compressors are becoming increasingly higher, especially under high pressure conditions. Whether the sealing effect of the packing can be improved and leakage can be reduced is the key to improving the efficiency of the compressor.
[0003] When a traditional reciprocating compressor compresses process gas, the high-pressure gas flows from the cylinder side to the body side. The packing parts are generally equipped with a throttle ring to throttle the high-pressure gas, and then a sealing ring group is used for sealing. The high-pressure gas has a high pressure and a fast flow speed, and the packing parts are subjected to a high impact, so the process gas leaks relatively more. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a packing seal for a high-pressure reciprocating piston compressor, which solves the problem that packing components of the prior high-pressure reciprocating compressor are prone to leakage.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-pressure reciprocating piston compressor packing seal, including a cylinder base and a piston rod arranged in the cylinder base, one side of the cylinder base is the cylinder side, and the other side is the fuselage side, a stuffing tail box and a stuffing box are sequentially arranged on one side of the cylinder base close to the fuselage side, the stuffing tail box and the stuffing box are mounted on the outside of the piston rod, an auxiliary sealing assembly is arranged on the outside of the piston rod, and a sealing assembly is arranged in the stuffing tail box and the stuffing box.
[0006] Preferably, the sealing assembly comprises a throttling ring group arranged in the stuffing tail box and located on one side of the labyrinth seal, and a sealing ring group is arranged in the stuffing box.
[0007] Preferably, the auxiliary sealing assembly includes a labyrinth seal provided between the stuffing box and the piston rod.
[0008] Preferably, the auxiliary sealing assembly comprises a labyrinth seal provided between the cylinder base and the piston rod.
[0009] Preferably, the auxiliary sealing assembly includes a labyrinth seal provided between the cylinder base and the piston rod and between the stuffing box and the piston rod.
[0010] Preferably, the labyrinth seal is a thread groove structure.
[0011] Preferably, the labyrinth seal is a tooth-groove structure.
[0012] Beneficial Effects
[0013] The utility model provides a packing seal for a high-pressure reciprocating piston compressor, which has the following beneficial effects:
[0014] The packing components in the present invention are not only sealed using traditional throttling ring groups and sealing ring groups, but also use non-contact labyrinth seals between the throttling ring groups and the sealing ring groups, thereby solving the impact of high-pressure airflow on the throttling ring groups and the sealing ring groups and reducing the loads on the throttling ring groups and the sealing ring groups. This fundamentally solves the problem, reduces the leakage of process gas in the packing components, reduces economic losses, and improves the efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model from above.
[0017] Figure 3 This is a schematic diagram of the structure of Example 2 of the utility model.
[0018] Figure 4 It is a schematic diagram of the structure of the prior art of the utility model.
[0019] In the figure: 1. Cylinder base; 2. Stuffing tail box; 3. Stuffing box; 4. Throttle ring assembly; 5. Piston rod; 6. Sealing ring assembly; 7. Labyrinth seal. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model provides a technical solution: a packing seal of a high-pressure reciprocating piston compressor, comprising a cylinder seat and a piston rod arranged in the cylinder seat, one side of the cylinder seat is the cylinder side, and the other side is the fuselage side, a stuffing tail box and a stuffing box are arranged in sequence at one side of the cylinder seat close to the fuselage side, the stuffing tail box and the stuffing box are sleeved on the outside of the piston rod, an auxiliary sealing component is arranged on the outside of the piston rod, and a sealing component is arranged in the stuffing tail box and the stuffing box.
[0022] This embodiment is further configured such that the sealing assembly includes a throttling ring group arranged in the stuffing tail box and located on one side of the labyrinth seal, and a sealing ring group is arranged in the stuffing box.
[0023] This embodiment is further configured such that the auxiliary sealing assembly includes a labyrinth seal provided between the stuffing box and the piston rod.
[0024] This embodiment is further configured such that the auxiliary sealing assembly includes a labyrinth seal provided between the cylinder base and the piston rod.
[0025] This embodiment is further configured such that the auxiliary sealing assembly includes a labyrinth seal provided between the cylinder base and the piston rod and between the stuffing box and the piston rod.
[0026] This embodiment is further configured such that the labyrinth seal is a thread groove structure.
[0027] This embodiment is further configured such that the labyrinth seal is a thread groove structure.
[0028] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.
[0029] Embodiment 1: In this embodiment, a non-contact labyrinth seal 7 is arranged between the stuffing tail box 2 and the piston rod 5, and the operation is reliable. Under a certain small gap, a small amount of gas flows from the high-pressure side to the low-pressure side through each throttling point. When passing through each throttling point, the gas converts the pressure energy into kinetic energy. When the gas enters the tooth groove of the labyrinth seal, due to the sudden expansion of the volume, the gas speed drops rapidly, and part of its kinetic energy is converted into heat energy, and the other part is converted into eddy energy. After continuous and uniform throttling and repeated action of the tooth groove vortex chamber, the pressure of the process gas is reduced. Then, the throttling ring group and the sealing ring group in the packing component are sealed to ensure minimal leakage or no leakage of the process gas.
[0030] Embodiment 2: In this embodiment, the labyrinth seal 7 is not provided on the stuffing tail box 2, and a labyrinth seal is provided at the position where the cylinder seat and the piston rod meet.
[0031] Embodiment 3: In this embodiment, a labyrinth seal is provided on the stuffing tail box, and a labyrinth seal is also provided at the position where the cylinder seat and the piston rod meet.
[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A packing seal for a high-pressure reciprocating piston compressor, comprising a cylinder base (1) and a piston rod (5) arranged in the cylinder base (1), wherein one side of the cylinder base (1) is a cylinder side and the other side is a body side, and is characterized in that: A stuffing box (2) and a stuffing box (3) are sequentially arranged in the cylinder base (1) at one side close to the fuselage side. The stuffing box (2) and the stuffing box (3) are mounted on the outside of the piston rod (5). An auxiliary sealing component is arranged on the outside of the piston rod (5). A sealing component is arranged in the stuffing box (2) and the stuffing box (3).
2. A packing seal for a high pressure reciprocating piston compressor according to claim 1, characterized in that: The sealing assembly comprises a throttling ring group (4) arranged in the stuffing tail box (2) and located on one side of the labyrinth seal (7), and a sealing ring group (6) is arranged in the stuffing box (3).
3. A packing seal for a high pressure reciprocating piston compressor according to claim 2, characterized in that: The auxiliary sealing assembly comprises a labyrinth seal (7) arranged between the stuffing box (2) and the piston rod (5).
4. A packing seal for a high pressure reciprocating piston compressor according to claim 2, characterized in that: The auxiliary sealing assembly comprises a labyrinth seal (7) arranged between the cylinder base (1) and the piston rod (5).
5. A packing seal for a high pressure reciprocating piston compressor according to claim 2, characterized in that: The auxiliary sealing assembly comprises a labyrinth seal (7) arranged between the cylinder base (1) and the piston rod (5) and between the stuffing box (2) and the piston rod (5).
6. A packing seal for a high pressure reciprocating piston compressor according to any one of claims 2 to 5, characterized in that: The labyrinth seal (7) is a thread groove structure or a tooth groove structure.