A sealing packing structure for a high-pressure labyrinth compressor

Abstract

This utility model discloses a sealing packing structure for a high-pressure labyrinth compressor, including a packing box and a first packing ring. Several packing boxes abut against each other, and each packing box contains a first packing ring. The key feature is that a spacer ring abuts against the rear end of the rearmost packing box, and a flange cover abuts against the rear end of the spacer ring. A second packing ring is press-fitted between the flange cover and the spacer ring. A leakage channel is formed between the outer circumference of the second packing ring and the flange cover. The corresponding spacer ring has an axial hole communicating with the leakage channel, and the flange cover has a radial hole communicating with the leakage channel. The outer end of the radial hole is a leakage port, which is fitted with a hinged pipe joint. This utility model achieves instantaneous pressure relief of the compressor while meeting the installation requirements of extremely small spaces.

Description

Technical Field

[0001] This utility model relates to an improved invention of a high-pressure labyrinth compressor, and more particularly to an improved invention of a sealing packing structure for a high-pressure labyrinth compressor. Background Technology

[0002] High-pressure vertical labyrinth compressors are key equipment widely used in petroleum, chemical, and natural gas industries. Their main function is to compress gas to a high-pressure state through the reciprocating motion of a piston rod, thereby meeting the industrial demand for high-energy gases. However, under high-pressure environments, the compressor's sealing performance is crucial. Currently, traditional sealing packing structures have the following problems in practical applications: The leakage problem is serious: Under the action of high-pressure gas, the medium can easily leak into the spacer chamber through the sealing packing structure, causing the internal pressure of the spacer chamber to rise rapidly, which may lead to failures such as damage to the spacer chamber and shortened service life of the packing ring.

[0003] Limited pressure relief capacity: The existing structure lacks an effective high-pressure gas venting channel, which cannot discharge leaked high-pressure gas in a timely manner, increasing system risk.

[0004] Limited installation space: In some compact compressor designs, traditional sealing structures are difficult to meet the installation requirements of small spaces, limiting the optimization design of the equipment.

[0005] These problems not only affect the operating efficiency and safety of the compressor, but may also lead to frequent equipment downtime for maintenance, increasing maintenance costs and causing economic losses to the company. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a sealing packing structure for a high-pressure labyrinth compressor that achieves efficient sealing and pressure relief functions within a limited space.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the sealing packing structure of the high-pressure labyrinth compressor includes a packing box and a first packing ring, a plurality of the packing boxes abutting each other front to back, and the first packing ring is pressed into each packing box. The characteristic is that: the rear end of the packing box located at the rearmost end abuts against a spacer ring, the rear end of the spacer ring abuts against a flange cover, a second packing ring is pressed into the flange cover and the spacer ring, a leakage channel is formed between the outer circle of the second packing ring and the flange cover, the corresponding spacer ring is provided with an axial hole communicating with the leakage channel, the flange cover is provided with a radial hole communicating with the leakage channel, the outer end of the radial hole is a leakage port, and the leakage port is equipped with a hinged pipe joint.

[0008] The leakage channel, radial hole, and axial hole are sized to accommodate high-pressure gas release.

[0009] The radial holes are provided in two symmetrical configurations.

[0010] The contact surfaces between the first stuffing boxes, between the first stuffing box and the spacer ring, and between the spacer ring and the flange cover are uniformly contacting ground surfaces.

[0011] The packing box at the front has a shoulder step, and an annular gasket is provided on the shoulder step.

[0012] Both the first packing ring and the second packing ring have built-in springs.

[0013] The beneficial effects of this utility model are that the improved sealing packing structure of the high-pressure labyrinth compressor achieves rapid discharge of high-pressure gas by setting axial holes on the spacer ring, radial holes on the flange cover, and forming a leakage channel between the second packing ring and the flange cover; the leakage port is equipped with a hinged pipe joint for easy connection to an external pressure relief pipeline, ensuring safe discharge of gas to a designated area; the dimensions of the leakage channel, axial holes, and radial holes are rationally designed to meet the instantaneous release requirements of high-pressure gas and prevent equipment damage caused by untimely pressure relief. Attached Figure Description

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0016] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1 The sealing packing structure of this high-pressure labyrinth compressor includes a packing box 1 and a first packing ring 2. Several packing boxes 1 are positioned abutting each other, and each packing box 1 contains a first packing ring 2. The rearmost packing box 1 abuts against a spacer ring 3. The spacer ring 3 has an annular groove on its inner circumference. The rear end of the spacer ring 3 abuts against a flange cover 4. A second packing ring 5 is press-fitted between the flange cover 4 and the spacer ring 3. A leakage channel 6 is formed between the outer circumference of the second packing ring 5 and the flange cover 4. The corresponding spacer ring 3 has an axial hole 7 connecting to the leakage channel 6, and the flange cover 4 has a radial hole 8 connecting to the leakage channel 6. The outer end of the radial hole 8 is a leakage port, which is equipped with a hinged pipe joint 9. The first packing ring 2 and the second packing ring 5 are preferably made of graphite, which has good high-temperature resistance and corrosion resistance, adapts to complex working conditions, and extends service life.

[0017] The working principle of this utility model is that the piston rod can move axially and pass through the sealing packing structure. The piston rod is sealed with the first packing ring 2 and the second packing ring 5. The high-pressure gas leaking from inside and outside the piston chamber passes through the piston rod and the first packing ring 2, enters the annular groove of the spacer ring 3, and passes through the axial hole 7, the leakage channel 6, the radial hole 8, the leakage port, and the pipe connected to the hinged pipe joint 9 in sequence, and releases the pressure to the designated area.

[0018] As a further improved specific implementation, the leakage channel 6, radial hole 8 and axial hole 7 are of a size adapted to the release of high-pressure gas, and are usually enlarged to meet the instantaneous pressure release of high-pressure gas.

[0019] As a further improved implementation, the radial holes 8 are provided in two symmetrical configurations to improve pressure relief efficiency and symmetry, ensure uniform gas discharge, and prevent local pressure concentration.

[0020] As a further improved embodiment, the contact surfaces between the first stuffing boxes 1, between the first stuffing box 1 and the spacer ring 3, and between the spacer ring 3 and the flange cover 4 are uniformly contacting ground surfaces, which significantly improves the fit of the sealing surface and reduces leakage.

[0021] As a further improved specific implementation, the packing box 1 at the front is provided with a shoulder step 10, and an annular gasket 11 is provided on the shoulder step 10. The shoulder step 10 serves to limit the installation of the packing structure, while the annular gasket 11 serves to dampen vibration.

[0022] As a further improved embodiment, both the first packing ring 2 and the second packing ring 5 are equipped with springs. The elastic force of the springs is used to compensate for gap changes caused by wear or vibration, ensuring the continuous stability of the seal.

[0023] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A sealing packing structure for a high-pressure labyrinth compressor, comprising a packing box and a first packing ring, wherein a plurality of the packing boxes abut against each other front to back, and the first packing ring is press-fitted into each packing box, characterized in that: The rear end of the packing box is abutted by a spacer ring, and the rear end of the spacer ring is abutted by a flange cover. A second packing ring is press-fitted between the flange cover and the spacer ring. An air leakage channel is formed between the outer circle of the second packing ring and the flange cover. The corresponding spacer ring is provided with an axial hole that connects to the air leakage channel. The flange cover is provided with a radial hole that connects to the air leakage channel. The outer end of the radial hole is an air leakage port, and the air leakage port is equipped with a hinged pipe joint.

2. The sealing packing structure of the high-pressure labyrinth compressor as described in claim 1, characterized in that: The leakage channel, radial hole, and axial hole are sized to accommodate high-pressure gas release.

3. The sealing packing structure of the high-pressure labyrinth compressor as described in claim 1, characterized in that: The radial holes are provided in two symmetrical configurations.

4. The sealing packing structure of the high-pressure labyrinth compressor as described in claim 1, characterized in that: The contact surfaces between the first stuffing boxes, between the first stuffing box and the spacer ring, and between the spacer ring and the flange cover are uniformly contacting ground surfaces.

5. The sealing packing structure of the high-pressure labyrinth compressor as described in claim 1, characterized in that: The packing box at the front has a shoulder step, and an annular gasket is provided on the shoulder step.

6. The sealing packing structure of the high-pressure labyrinth compressor as described in claim 1, characterized in that: Both the first packing ring and the second packing ring have built-in springs.

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