CN219197618U - Plunger double-packing seal - Google Patents
Plunger double-packing seal Download PDFInfo
- Publication number
- CN219197618U CN219197618U CN202320350462.0U CN202320350462U CN219197618U CN 219197618 U CN219197618 U CN 219197618U CN 202320350462 U CN202320350462 U CN 202320350462U CN 219197618 U CN219197618 U CN 219197618U
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- Prior art keywords
- packing
- flushing fluid
- plunger
- seal
- filler
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- 238000012856 packing Methods 0.000 title claims abstract description 90
- 238000011010 flushing procedure Methods 0.000 claims abstract description 95
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 210000004907 gland Anatomy 0.000 claims description 32
- 239000000945 filler Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 7
- 238000005461 lubrication Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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- Sealing Devices (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a plunger double-packing seal, which belongs to the technical field of plunger pumps and comprises a plunger and a packing box shell, wherein the plunger is positioned in the middle of the inside of the packing box shell, a plunger double-packing seal mechanism is arranged between the upper end of the circumference of the plunger and the inside of the packing box shell, and one side of the upper end of the packing box shell is provided with a sealing flushing fluid inlet. According to the utility model, the packing seal flushing system is arranged between the sealing flushing fluid inlet and the sealing flushing fluid outlet, flushing fluid is led into the packing box shell from the sealing flushing fluid inlet and is led out from the sealing flushing fluid outlet to the packing seal flushing fluid tank, so that circulation is realized, the original dry friction between the plunger and the packing increases the lubrication of the flushing fluid, heat generated by friction can be timely taken away by the sealing flushing fluid, the plunger is effectively protected, the wearing period of the packing is increased, the leakage state of the main packing assembly can be timely found through monitoring by the remote transmission instrument, and the sudden external leakage event of materials can be effectively avoided.
Description
Technical Field
The utility model relates to the technical field of plunger pumps, in particular to a plunger double-packing seal.
Background
The chemical reactor feed pump is the most important dynamic equipment in various chemical devices, and is mainly used for conveying main materials in the chemical process of hydrogenation, polymerization, vulcanization, nitration and the like. Because the pressure of a part of chemical reactor is 2.0-10.0MPa, the process design mostly adopts a vertical plunger reciprocating pump as a chemical reactor feed pump, and the sealing mode is single-filler sealing. The single-filler seal ensures the service life of the equipment by means of the smoothness of the plunger and the wear resistance and the tightness of filler materials. There are conditions where seal failure is abrupt and daily VOC is leaking. Meanwhile, personnel are not easy to find the leakage trend of the filler in the equipment inspection process, and preventive maintenance cannot be achieved.
There is a need for a plunger double packing seal to address the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a plunger double-packing seal.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a plunger double packing seal, includes plunger and stuffing box casing, the plunger is located the inside centre of stuffing box casing, be provided with plunger double packing seal mechanism between plunger circumference upper end and the inside of stuffing box casing, stuffing box casing upper end one side is provided with sealed flushing fluid entry, and stuffing box casing upper end opposite side is provided with sealed flushing fluid export, and is provided with the packing seal flushing system between sealed flushing fluid entry and the sealed flushing fluid export, packing seal flushing system includes packing seal flushing fluid groove, and packing seal flushing fluid groove entrance point fixed mounting has packing seal flushing fluid pump, be provided with cooler, oil pressure governing valve, teletransmission manometer, on-the-spot manometer, check valve between packing seal flushing fluid groove exit end and the sealed flushing fluid entry, and packing seal flushing fluid groove one side outer wall fixed mounting has on-spot thermometer, and packing seal flushing fluid groove opposite side fixed mounting has on-spot level gauge and teletransmission level gauge.
Preferably, the plunger double-material sealing mechanism comprises a cage ring, a main packing assembly, a main gland, main threads, an auxiliary packing assembly, an auxiliary gland and auxiliary threads.
Preferably, the sealing flushing fluid inlet and the sealing flushing fluid outlet are both located circumferentially outside the cage ring, and the cage ring is located between the main packing assembly and the main gland.
Preferably, the gland flange is fixedly arranged at the top end of the stuffing box shell, and the main gland and the gland flange, and the auxiliary gland and the main gland are rotatably arranged.
Preferably, the other side of the upper end of the outer wall of one end of the packing flushing liquid tank is fixedly provided with an oil filling port, and one side of the upper end of the outer wall of one end of the packing flushing liquid tank is fixedly provided with a breathing port.
Preferably, the lower end of the outer wall of the other side of the packing seal flushing liquid tank is fixedly provided with a sewage outlet.
Preferably, the inlet filter is fixedly arranged at the outlet end of the packing sealed flushing liquid pump.
The beneficial effects of the utility model are as follows:
according to the plunger double-filler seal, a filler seal flushing system is arranged between a seal flushing fluid inlet and a seal flushing fluid outlet, and comprises a filler seal flushing fluid groove, a filler seal flushing fluid pump, a cooler, an oil pressure regulating valve, a remote pressure gauge, an on-site pressure gauge, a one-way valve, a remote temperature gauge, an on-site liquid level gauge, a remote liquid level gauge and an inlet filter, flushing fluid is led into a stuffing box shell from the seal flushing fluid inlet and led out to the filler seal flushing fluid groove from the seal flushing fluid outlet, so that circulation is achieved, original dry friction between the plunger and the filler increases the lubrication of the flushing fluid, heat generated by friction can be timely taken away by the seal flushing fluid, the plunger is effectively protected, the abrasion period of the filler is increased, the leakage state of a main filler component can be timely found through monitoring of the remote instrument, sudden external leakage events of the material can be effectively avoided, meanwhile, the external leakage of VOC gas can be obviously reduced, the problem of maintenance cost can be reduced, and the problem of equipment running risk can be reduced.
Drawings
FIG. 1 is a schematic view of a cross-sectional installation structure of a plunger double-packing seal according to the present utility model;
FIG. 2 is a schematic diagram of a plunger double-packing seal according to the present utility model;
fig. 3 is a schematic structural view of a plunger double-packing sealing cage ring according to the present utility model.
Reference numerals:
1 plunger, 3 gland flange, 4 main gland, 5 stuffing box shell, 6 main stuffing assembly, 7 auxiliary gland, 8 auxiliary screw thread, 9 auxiliary stuffing assembly, 10 main screw thread, 11 cage ring, 12 sealing flushing liquid inlet, 13 sealing flushing liquid outlet, 14 sealing flushing liquid tank, 15 on site thermometer, 16 inlet filter, 17 sealing flushing liquid pump, 18 cooler, 19 oil pressure regulating valve, 20 remote pressure gauge, 21 on site pressure gauge, 22 remote temperature gauge, 23 check valve, 24 oil filler, 25 on site liquid level gauge, 26 remote liquid level gauge, 27 drain, 28 breathing port.
Detailed Description
Referring to fig. 1-3, a plunger double-packing seal comprises a plunger 1 and a packing box shell 5, wherein the plunger 1 is positioned in the middle of the inside of the packing box shell 5, a plunger double-packing seal mechanism is arranged between the upper end of the circumference of the plunger 1 and the inside of the packing box shell 5, a sealing flushing fluid inlet 12 is arranged on one side of the upper end of the packing box shell 5, a sealing flushing fluid outlet 13 is arranged on the other side of the upper end of the packing box shell 5, a packing flushing system is arranged between the sealing flushing fluid inlet 12 and the sealing flushing fluid outlet 13, the packing flushing system comprises a packing flushing fluid tank 14, a packing flushing fluid pump 17 is fixedly arranged at the inlet end of the packing flushing fluid tank 14, a cooler 18, an oil pressure regulating valve 19, a remote pressure gauge 20, a local pressure gauge 21 and a one-way valve 23 are arranged between the outlet end of the packing flushing fluid tank 14 and the sealing flushing fluid inlet 12, a local thermometer 15 is fixedly arranged on the outer wall on one side of the packing flushing fluid tank 14, and a local liquid level gauge 25 and a remote liquid level gauge 26 are fixedly arranged on the other side of the packing flushing fluid tank 14.
In the utility model, the plunger double-material sealing mechanism comprises a cage ring 11, a main packing assembly 6, a main gland 4, main threads 10, an auxiliary packing assembly 9, an auxiliary gland 7 and auxiliary threads 8;
the sealing flushing fluid inlet 12 and the sealing flushing fluid outlet 13 are both positioned on the outer side of the circumference of the cage ring 11, and the cage ring 11 is positioned between the main packing assembly 6 and the main gland 4, so that the cage ring 11 can support the main packing assembly 6 and the main gland 4 and is of a hollow structure so as to facilitate flushing fluid circulation;
the top end of the packing box shell 5 is fixedly provided with a gland flange 3, and the main gland 4 and the gland flange 3, and the auxiliary gland 7 and the main gland 4 are all rotatably arranged, so that the main gland 4 and the gland flange 3 adopt screw compression to seal a main packing component 6, and the auxiliary gland 7 and the main gland 4 adopt screw compression to seal an auxiliary packing component 9;
the other side of the upper end of the outer wall of one end of the packing seal flushing liquid tank 14 is fixedly provided with an oil filling port 24, and one side of the upper end of the outer wall of one end of the packing seal flushing liquid tank 14 is fixedly provided with a breathing port 28;
a drain outlet 27 is fixedly arranged at the lower end of the outer wall of the other side of the packing seal flushing tank 14;
an inlet filter 16 is fixedly arranged at the outlet end of the packing-seal flushing liquid pump 17, so that sundries of flushing liquid are prevented from being led into the packing-seal flushing liquid tank 14, and the quality of the flushing liquid is reduced.
Working principle: the packing flushing system is arranged between the packing flushing fluid inlet 12 and the packing flushing fluid outlet 13, and comprises a packing flushing fluid tank 14, a packing flushing fluid pump 17, a cooler 18, an oil pressure regulating valve 19, a remote pressure gauge 20, a local pressure gauge 21, a one-way valve 23, a remote temperature gauge 22, a local temperature gauge 15, a local liquid level gauge 25, a remote liquid level gauge 26 and an inlet filter 16, flushing fluid is led into the packing box shell 5 from the packing flushing fluid inlet 12, and is led out of the packing flushing fluid outlet 13 to the packing flushing fluid tank 14, so that circulation is performed, the original dry friction between the plunger 1 and packing increases the lubrication of the flushing fluid, heat generated by friction can be timely taken away by the packing flushing fluid, the plunger 1 is effectively protected, the abrasion period of the packing is increased, the leakage state of the main packing assembly 6 can be timely found through remote instrument monitoring, sudden external leakage events of the material can be effectively avoided, meanwhile, the problem of overhauling cost can be obviously reduced, and the problem of equipment running risk can be reduced.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The plunger double-filler seal comprises a plunger (1) and a filler box shell (5), wherein the plunger (1) is positioned in the middle of the inside of the filler box shell (5), a plunger double-filler seal mechanism is arranged between the upper end of the circumference of the plunger (1) and the inside of the filler box shell (5), the plunger double-filler seal is characterized in that one side of the upper end of the filler box shell (5) is provided with a sealing flushing fluid inlet (12), the other side of the upper end of the filler box shell (5) is provided with a sealing flushing fluid outlet (13), a filler seal flushing system is arranged between the sealing flushing fluid inlet (12) and the sealing flushing fluid outlet (13), the filler seal flushing system comprises a filler seal flushing fluid tank (14), a filler seal flushing fluid pump (17) is fixedly arranged at the inlet end of the filler seal flushing fluid tank (14), a cooler (18), an oil pressure regulating valve (19), a remote pressure gauge (20), a local pressure gauge (21) and a one-way valve (23) are arranged between the outlet end of the filler seal flushing fluid tank (14) and the sealing flushing fluid inlet (12), a remote temperature gauge (14) is fixedly arranged at one side of the filler gauge (15), and the other side of the packing seal flushing liquid tank (14) is fixedly provided with an on-site liquid level meter (25) and a remote liquid level meter (26).
2. A plunger double packing seal according to claim 1, characterized in that the plunger double packing mechanism comprises a cage ring (11), a main packing assembly (6), a main gland (4), a main thread (10), an auxiliary packing assembly (9), an auxiliary gland (7), an auxiliary thread (8).
3. A plunger double packing seal according to claim 2, wherein the seal flushing fluid inlet (12) and the seal flushing fluid outlet (13) are both located circumferentially outside the cage ring (11), and the cage ring (11) is located between the main packing assembly (6) and the main gland (4).
4. The plunger double-packing seal according to claim 2, wherein a gland flange (3) is fixedly arranged at the top end of the packing box shell (5), and the main gland (4) and the gland flange (3), the auxiliary gland (7) and the main gland (4) are rotatably arranged.
5. The plunger double-packing seal according to claim 1, wherein the packing seal flushing liquid tank (14) is fixedly provided with a filling port (24) at one end of the outer wall, and a breathing port (28) is fixedly provided at the other end of the outer wall.
6. The plunger double-packing seal according to claim 5, wherein a drain outlet (27) is fixedly arranged at the lower end of the outer wall of the other side of the packing seal flushing liquid tank (14).
7. A plunger double packing according to claim 1, wherein the inlet filter (16) is fixedly mounted at the outlet end of the packing flushing pump (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320350462.0U CN219197618U (en) | 2023-03-01 | 2023-03-01 | Plunger double-packing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320350462.0U CN219197618U (en) | 2023-03-01 | 2023-03-01 | Plunger double-packing seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219197618U true CN219197618U (en) | 2023-06-16 |
Family
ID=86720659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320350462.0U Active CN219197618U (en) | 2023-03-01 | 2023-03-01 | Plunger double-packing seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219197618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605674A (en) * | 2023-12-07 | 2024-02-27 | 阿奥艾斯能源科技成都有限公司 | High-temperature plunger pump hydraulic end structure |
-
2023
- 2023-03-01 CN CN202320350462.0U patent/CN219197618U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605674A (en) * | 2023-12-07 | 2024-02-27 | 阿奥艾斯能源科技成都有限公司 | High-temperature plunger pump hydraulic end structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |