CN202708065U - Nitrogen-filled packing seal ring with wedge structure - Google Patents
Nitrogen-filled packing seal ring with wedge structure Download PDFInfo
- Publication number
- CN202708065U CN202708065U CN 201220268261 CN201220268261U CN202708065U CN 202708065 U CN202708065 U CN 202708065U CN 201220268261 CN201220268261 CN 201220268261 CN 201220268261 U CN201220268261 U CN 201220268261U CN 202708065 U CN202708065 U CN 202708065U
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- China
- Prior art keywords
- seal ring
- nitrogen
- wedge
- piston rod
- shaped structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a nitrogen-filled packing seal ring with a wedge structure. The nitrogen-filled packing seal ring comprises a packing box sleeved on a piston rod, wherein a first seal ring and a second seal ring are arranged in the packing boxy; the first seal ring and the piston rod are in sliding connection; a nitrogen passage is arranged between the second seal ring and the piston rod; the nitrogen passage is communicated with a nitrogen inlet; the first seal ring and the second seal ring are respectively provided with wedge structures which are matched with each other, and are connected through the wedge structures; and a gap is reserved on the adhesive surface between the first seal ring and the second seal ring. Compared with the prior art, the nitrogen consumption is reduced, and hazardous gas is prevented from leaking to an extend neck cavity in startup and halt, so that the safety of the device and operation can be improved.
Description
Technical field
The utility model relates to the seal arrangement in the conveyor, especially relates to a kind ofly filling the nitrogen packing sealing ring with wedge-shaped structure.
Background technique
Packing seal is called again compression filler (Gland Packings) sealing, is commonly called as packing (Packings).Packing_seal is the most ancient a kind of sealing configuration, in the water lifting machinery of Ancient Times in China, blocks leakage with the method for filling cotton yarn, and the steamer that occurs the earliest in the world also is to adopt this seal form.And 19th century oil and natural gas exploitation technology production and development, make the gland sealed material that new development arranged.To 20th century, packing seal is relatively simple for structure because of it, and the charge is small, wide material sources and obtain the favor of many industrial departments.
Packing seal is mainly used in the motive sealings such as process machine and equipment motion parts in the machinery industry, such as plunger or the piston rod of the rotating shaft sealing of centrifugal pump, compressor, vacuum pump, stirrer, reactor and reciprocating pump, reciprocal compressor, and the spin valve rod of motion valve and the fixedly sealing between the body.
Existing nitrogen-sealed ring and the common the same plane structure that all adopted of cylinder packing sealing ring, require to leave the lateral expansion gap with stuffing box during initial the installation, shortcoming is that the nitrogen consumption is large, and at the driving initial stage and when stopping since sideshake exist, the part process gas can leak in the extend neck along sideshake, exists certain potential safety hazard.
The model utility content
The purpose of this utility model is exactly in order to reduce the nitrogen consumption, to stop hazardous gas to be leaked to the extend neck chamber when driving and shut down, and improves Security and provides a kind of and fill the nitrogen packing sealing ring with wedge-shaped structure.
The purpose of this utility model can be achieved through the following technical solutions:
A kind ofly fill the nitrogen packing sealing ring with wedge-shaped structure, comprise the stuffing box that is enclosed within on the piston rod, be provided with the first seal ring and the second seal ring in the described stuffing box, described the first seal ring and piston rod are slidingly connected, be provided with channel of nitrogen between described the second seal ring and the piston rod, described channel of nitrogen is communicated with nitrogen inlet, described the first seal ring and the second seal ring are equipped with the wedge-shaped structure of working in coordination, and by this wedge-shaped structure connection, the faying surface place between described the first seal ring and the second seal ring is provided with the gap.Described the first seal ring and the second seal ring are equipped with two.
The thermal expansion amount of the first seal ring or the second seal ring during for the compensation operation, reserve certain gap at the first seal ring and the second seal ring faying surface place, when the ring expanded by heating, produce between the wedge-shaped structure of the first seal ring and the second seal ring and slide, compensated the swell increment of the rear generation because the first seal ring or the second seal ring are heated, remain fit-state between the second seal ring and the stuffing box simultaneously, again because the force of sliding friction between the wedge-shaped structure, to the first seal ring generation component radially, the piston rod so that the internal surface of the first seal ring is more fitted has increased sealability.
Compared with prior art, the utility model has reduced the nitrogen consumption, has stoped hazardous gas to be leaked to the extend neck chamber when driving and shut down, and improves the Security of device and operation.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
A kind ofly fill the nitrogen packing sealing ring with wedge-shaped structure, structure as shown in Figure 1, comprise the stuffing box 1 that is enclosed within on the piston rod 4, be provided with the first seal ring 2 and the second seal ring 3 in the stuffing box 1, the first seal ring 2 is slidingly connected with piston rod 4, be provided with channel of nitrogen 8 between the second seal ring 3 and the piston rod 4, channel of nitrogen 8 is communicated with nitrogen inlet 7, the first seal ring 2 and the second seal ring 3 are equipped with the wedge-shaped structure 5 of working in coordination, and by these wedge-shaped structure 5 connections, the faying surface place between the first seal ring 2 and the second seal ring 3 is provided with gap 6.The first seal ring 2 and the second seal ring 3 are equipped with two.
The thermal expansion amount of the first seal ring 2 or the second seal ring 3 during for the compensation operation, reserve certain gap at the first seal ring 2 and the second seal ring 3 faying surface places, when the ring expanded by heating, produce between the wedge-shaped structure 5 of the first seal ring 2 and the second seal ring 3 and slide, compensated the swell increment of the rear generation because the first seal ring 2 or the second seal ring 3 are heated, remain fit-state between the second seal ring 3 and the stuffing box 1 simultaneously, again because the force of sliding friction between the wedge-shaped structure 5, to the first seal ring 2 generations component radially, the piston rod 4 so that internal surface of the first seal ring 2 is more fitted has increased sealability.
Claims (2)
1. one kind is filled the nitrogen packing sealing ring with wedge-shaped structure, comprise the stuffing box that is enclosed within on the piston rod, it is characterized in that, be provided with the first seal ring and the second seal ring in the described stuffing box, described the first seal ring and piston rod are slidingly connected, be provided with channel of nitrogen between described the second seal ring and the piston rod, described channel of nitrogen is communicated with nitrogen inlet, described the first seal ring and the second seal ring are equipped with the wedge-shaped structure of working in coordination, and by this wedge-shaped structure connection, the faying surface place between described the first seal ring and the second seal ring is provided with the gap.
According to claim 1 a kind of with wedge-shaped structure fill the nitrogen packing sealing ring, it is characterized in that described the first seal ring and the second seal ring are equipped with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268261 CN202708065U (en) | 2012-06-07 | 2012-06-07 | Nitrogen-filled packing seal ring with wedge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268261 CN202708065U (en) | 2012-06-07 | 2012-06-07 | Nitrogen-filled packing seal ring with wedge structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708065U true CN202708065U (en) | 2013-01-30 |
Family
ID=47588371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268261 Expired - Lifetime CN202708065U (en) | 2012-06-07 | 2012-06-07 | Nitrogen-filled packing seal ring with wedge structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708065U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329247A (en) * | 2014-10-14 | 2015-02-04 | 上海大隆机器厂有限公司 | Water channel welding type stuffing box |
| CN109630380A (en) * | 2018-12-07 | 2019-04-16 | 山西焦化股份有限公司 | A kind of device reducing the flammable Gas content of feed gas compressor crankcase |
| CN111503271A (en) * | 2020-03-19 | 2020-08-07 | 江苏丰尚智能科技有限公司 | Radial compressing and sealing device |
| CN117450204A (en) * | 2023-12-22 | 2024-01-26 | 江苏耐玛鑫精密机械有限公司 | Nitrogen spring sealing structure and working principle thereof |
-
2012
- 2012-06-07 CN CN 201220268261 patent/CN202708065U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329247A (en) * | 2014-10-14 | 2015-02-04 | 上海大隆机器厂有限公司 | Water channel welding type stuffing box |
| CN109630380A (en) * | 2018-12-07 | 2019-04-16 | 山西焦化股份有限公司 | A kind of device reducing the flammable Gas content of feed gas compressor crankcase |
| CN111503271A (en) * | 2020-03-19 | 2020-08-07 | 江苏丰尚智能科技有限公司 | Radial compressing and sealing device |
| CN117450204A (en) * | 2023-12-22 | 2024-01-26 | 江苏耐玛鑫精密机械有限公司 | Nitrogen spring sealing structure and working principle thereof |
| CN117450204B (en) * | 2023-12-22 | 2024-03-08 | 江苏耐玛鑫精密机械有限公司 | Nitrogen spring sealing structure and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |