CN203594602U - Gas-liquid mixed transportation single-screw pump provided with dual-end-face mechanical seal - Google Patents
Gas-liquid mixed transportation single-screw pump provided with dual-end-face mechanical seal Download PDFInfo
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- CN203594602U CN203594602U CN201320645678.6U CN201320645678U CN203594602U CN 203594602 U CN203594602 U CN 203594602U CN 201320645678 U CN201320645678 U CN 201320645678U CN 203594602 U CN203594602 U CN 203594602U
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Abstract
The utility model relates to a gas-liquid mixed transportation single-screw pump provided with a dual-end-face mechanical seal. The gas-liquid mixed transportation single-screw pump comprises a pump body and a mechanical seal connected with one end of the pump body, and is characterized in that the mechanical seal adopts the dual-end-face mechanical seal, one sealing end-face is a sealing end-face isolated from an inlet end of the pump body, and the other sealing end-face is a sealing end-face isolated from the outside. According to the utility model, the gas-liquid mixed transportation single-screw pump has the advantages that not only can the sealing property of the mixed transportation pump be greatly increased, the leakage of harmful gases such as hydrogen sulfide in raw oil caused by mechanical sealing leakage and damage can be effectively prevented, and the personal safety of operators can be ensured, but also the dual-end-face mechanical seal is simple in structure and convenient to mount and maintain.
Description
Technical field
The utility model belongs to volume type single screw pump field, particularly relates to a kind of gas-liquid delivery helical rotor pump with double mechanical seal that is applicable to crude oil exploitation.
Background technique
Helical rotor pump is a kind of positive displacement pump, has been widely used at present each industrial fields such as oil, chemical industry, sewage treatment and boats and ships.At oil, chemical field, particularly crude oil exploration industry, in order to improve crude output, to reduce production costs, the application of oil-gas mixed delivery pump (multiphase pump) more and more comes many, and it i.e. energy-conservation, consumption reduction, improves again crude output.Described oil and gas multiphase flow is exactly that the multiphase mixtures such as the crude oil by oil well output, water, rock gas, sand, paraffin are concentrated on to the conveying on same pipeline.The pumping element of traditional helical rotor pump mainly forms by the screw rod as rotor with as the pump block of stator, and rotor is helical metal bar, and stator is with special process pressure injection bonding firmly rubber sleeve on inner wall of metal tube.Because the material of the stator of single screw rod mixing delivery pump is to adopt elastic caoutchouc to make, and be assembled into interference fit between rotor and stator, in the using process of oil gas list screw rod mixing delivery pump, owing to containing a large amount of impurity in crude oil, and mixing pump mechanical seal is a weak link of mixing pump, be easy to like this cause mechanical sealing friction pairs to damage, cause mechanical seal leakage; And in crude oil often with harmful gases such as hydrogen sulfide, and leakage can cause operating personnel's injures and deaths.
Summary of the invention
The utility model for solve the technical problem existing in known technology provide a kind of simple in structure, installation, maintenance is easy and can increase substantially the gas-liquid delivery helical rotor pump with double mechanical seal of mixing pump sealability.
The technological scheme that the utility model is taked for the technical problem existing in solution known technology is:
There is the gas-liquid delivery helical rotor pump of double mechanical seal, comprise the pump housing and the mechanical seal being connected with pump housing one end, described mechanical seal is double mechanical seal, and wherein a seal face is the seal face of isolation pump housing entrance point, and another seal face is the extraneous seal face of isolation.
The utility model can also adopt following technological scheme:
Described double mechanical seal comprises by fastening piece and the affixed seal of the pump housing one end flange, with the affixed sealing gland of seal, is arranged on the rubber bellows seal in seal and is fixed on rubber bellows seal intermediate portion for adjusting Seal cage installation dimension and playing the spacer ring of isolation supporting effect.
Described rubber bellows seal outer cover is equipped with holddown spring.
Described spacer ring is intermetallic spacer ring.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, the i.e. mechanical seal of mixed defeated helical rotor pump adopts double mechanical seal, wherein a seal face is the seal face of isolation pump housing entrance point, another seal face is the extraneous seal face of isolation, so not only can increase substantially the sealability of mixing pump, effectively prevent mechanical seal leakage from damaging and cause the leakage of the harmful gases such as hydrogen sulfide in crude oil, having guaranteed operating personnel's personal safety; And simple in structure, be easy for installation and maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model double-face mechanical sealing structure schematic diagram.
In figure: 1, seal; 2, sylphon seal; 3, holddown spring; 4, spacer ring; 5, mixing pump body; 6, O type circle; 7, sealing gland; 8, lock screw.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 and Fig. 2, have the gas-liquid delivery helical rotor pump of double mechanical seal, comprise mixing pump body 5 and the mechanical seal being connected with mixing pump body one end, described mechanical seal is for adopting double-face mechanical sealing structure.Two seal faces, wherein a seal face is the seal face of isolation mixing pump body entrance point, another seal face is the extraneous seal face of isolation.
Described double seals comprises by fastening piece and the affixed seal 1 of mixing pump body one end flange, with the affixed sealing gland 7 in seal two ends, is arranged on the rubber bellows seal 2 in seal and is fixed on rubber bellows seal intermediate portion for adjusting Seal cage installation dimension and playing the spacer ring 4 of isolation supporting effect.Described sealing gland 7 is fastening by lock screw 8 and seal 1, and O type circle 6 is housed between described sealing gland 7 and seal.
In the present embodiment, the outer cover of described rubber bellows seal 2 is equipped with holddown spring 3.
In the present embodiment, described spacer ring 4 is preferably intermetallic spacer ring.
This mixed defeated helical rotor pump double mechanical seal is with seal lubrication oil pump systems; lubricant oil is transported in the Seal cage of mixed defeated helical rotor pump by seal lubrication oil pump systems; the pressure of lubricant oil will be higher than mixing pump inlet pressure 0.1～0.2MPa, to reach the object of protection double mechanical seal.
Claims (4)
1. one kind has the gas-liquid delivery helical rotor pump of double mechanical seal, comprise the pump housing and the mechanical seal being connected with pump housing one end, it is characterized in that: described mechanical seal is double mechanical seal, wherein a seal face is the seal face of isolation pump housing entrance point, and another seal face is the extraneous seal face of isolation.
2. the gas-liquid delivery helical rotor pump with double mechanical seal according to claim 1, is characterized in that: described double mechanical seal comprises by fastening piece and the affixed seal of the pump housing one end flange, with the affixed sealing gland of seal, is arranged on the rubber bellows seal in seal and is fixed on rubber bellows seal intermediate portion for adjusting Seal cage installation dimension and playing the spacer ring of isolation supporting effect.
3. the gas-liquid delivery helical rotor pump with double mechanical seal according to claim 2, is characterized in that: described rubber bellows seal outer cover is equipped with holddown spring.
4. the gas-liquid delivery helical rotor pump with double mechanical seal according to claim 2, is characterized in that: described spacer ring is intermetallic spacer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645678.6U CN203594602U (en) | 2013-10-18 | 2013-10-18 | Gas-liquid mixed transportation single-screw pump provided with dual-end-face mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645678.6U CN203594602U (en) | 2013-10-18 | 2013-10-18 | Gas-liquid mixed transportation single-screw pump provided with dual-end-face mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594602U true CN203594602U (en) | 2014-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320645678.6U Expired - Fee Related CN203594602U (en) | 2013-10-18 | 2013-10-18 | Gas-liquid mixed transportation single-screw pump provided with dual-end-face mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221414A (en) * | 2015-09-30 | 2016-01-06 | 耐驰（兰州）泵业有限公司 | A kind of multiphase mixed transportation device based on helical rotor pump |
| CN111396307A (en) * | 2020-01-15 | 2020-07-10 | 黄山众拓工业泵制造有限公司 | Single-suction double-screw pump with strong sealing performance |
-
2013
- 2013-10-18 CN CN201320645678.6U patent/CN203594602U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221414A (en) * | 2015-09-30 | 2016-01-06 | 耐驰（兰州）泵业有限公司 | A kind of multiphase mixed transportation device based on helical rotor pump |
| CN111396307A (en) * | 2020-01-15 | 2020-07-10 | 黄山众拓工业泵制造有限公司 | Single-suction double-screw pump with strong sealing performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20161018 |