CN109372738A - A kind of double containment cools down pump head structure of piston pump entirely - Google Patents
A kind of double containment cools down pump head structure of piston pump entirely Download PDFInfo
- Publication number
- CN109372738A CN109372738A CN201811542288.XA CN201811542288A CN109372738A CN 109372738 A CN109372738 A CN 109372738A CN 201811542288 A CN201811542288 A CN 201811542288A CN 109372738 A CN109372738 A CN 109372738A
- Authority
- CN
- China
- Prior art keywords
- pump head
- pump
- plunger
- lip
- entirely
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000000110 cooling liquid Substances 0.000 claims description 21
- 239000002826 coolant Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 230000002146 bilateral effect Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of double containments to cool down pump head structure of piston pump entirely.It is characterized by: two-stage seal assembly is arranged between plunger and pump head, two-stage seal assembly is made of primary seal component and secondary seal component, primary seal component is set between plunger and pump head, secondary seal component is set between plunger and welded part, and pump head, plunger and welded part surround a liquid storage chamber；Left cooling chamber is arranged on the pump head of the secondary periphery of friction of plunger and the formation of primary seal component, and right cooling chamber setting is connected to by setting in the intracorporal cooling duct of pump in pump head right part, left cooling chamber and right cooling chamber.Liquid storage chamber is arranged between two-stage seal assembly in the present invention, the pump intake that a current by pass is connected to metering pump is arranged in liquid storage chamber, this structure can guarantee that sealing structure successively plays sealing function；Left cooling chamber and right cooling chamber are set on pump head, medium can simultaneously effective be cooled down in all directions with plunger motion pair.
Description
Technical field
The present invention relates to a kind of double containments to cool down pump head structure of piston pump entirely.
Background technique
Due to plunger type metering pump by piston reciprocation movement come pumped (conveying) medium, plunger is sealed it is particularly critical, at present
Used sealing structure is the single-stage sealing structure as made of multiple sealing ring stack combinations between its plunger and the pump housing, this
The sealing structure of form due to the deformation of sealing ring, abrasion, causes to leak in use for some time, so that plunger type is measured
The service life of pump shortens dramatically.
And the plunger pump that medium is cryogenic liquid needs to carry out plunger pump pump head effectively to cool down, due to plunger pump pump head knot
Structure is complicated, and current existing cooling device can only cool down the fraction of pump head, it is easy to produce the cryogenic liquid in pump head
Angerization generates adverse effect；Piston reciprocation movement simultaneously, can also generate heat, if not can be carried out effective cooling, a meeting
Plunger and ring wear is set to accelerate and generate liquid leakage, another can transfer heat to the medium Low Temperature Liquid in pump head
Body increases the cryogenic liquid temperature in pump head and generates gasification.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of double containments to cool down plunger pump entirely
The technical solution of header structure.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that: welded part, column are arranged on pump head
Plug is arranged in welded part, two-stage seal assembly is arranged between plunger and pump head, two-stage seal assembly is by primary seal component
It is constituted with secondary seal component, primary seal component is set between plunger and pump head, second level is set between plunger and welded part
Seal assembly, pump head, plunger and welded part surround a liquid storage chamber, and liquid storage chamber is between two-stage seal assembly；It is set on pump head
Left cooling chamber and right cooling chamber are set, the pump head for the secondary periphery of friction that plunger and primary seal component are formed is arranged in left cooling chamber
On, right cooling chamber setting is connected to by setting in the intracorporal cooling duct of pump in pump head right part, left cooling chamber and right cooling chamber.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that setting connection liquid storage on the pump head
The current by pass of chamber.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the pump of the current by pass and pump head
Entrance connection.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the two-stage seal assembly is all made of
O-ring seal or lip-shaped sealed ring, lip-shaped sealed ring are equipped with support ring.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the welded part by interior pressure cap and
Outer pressure cap composition, the primary seal component are close by the first support ring, the first lip-shaped sealed ring, the second support ring and the second lip type
Seal composition, the first support ring, the first lip-shaped sealed ring, the second support ring and the second lip-shaped sealed ring are successively set on pump head
In limit chamber, interior pressure cap and pump head threaded simultaneously touch the second lip-shaped sealed ring；The secondary seal component is by third branch
Pushing out ring and third lip-shaped sealed ring composition, third support ring and third lip-shaped sealed ring are set gradually in the limit chamber of interior pressure cap,
Outer pressure cap and interior pressure cap threaded simultaneously touch third lip-shaped sealed ring；The plunger, interior pressure cap and pump head surround liquid storage chamber.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the left cooling chamber is by being provided with pump
Multiple tracks annular groove and sleeve on head cooperate, and sleeve is arranged in multiple tracks annular groove periphery.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the right cooling chamber is by being provided with pump
The cooling liquid flowing channel and pump head cooling lid of head right part cooperate, and the outside of cooling liquid flowing channel is arranged in pump head cooling lid.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the sleeve weld is arranged in pump head
On, cooling liquid outlet is set on sleeve.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the pump head cooling lid welding setting
On pump head, coolant inlet is set in pump head cooling lid.
A kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that the cooling liquid flowing channel is labyrinth type
Structure.
The present invention uses two-stage sealing structure, and liquid storage chamber is arranged between two-stage seal assembly, is arranged one in liquid storage chamber
A current by pass is connected to the pump intake of metering pump, and this structure can guarantee that two-stage sealing structure successively plays sealing function, i.e.,
After primary seal component is ineffective, the medium of leakage is stored in liquid storage chamber, and the pressure in liquid storage chamber is well below pump
Pressure, such secondary seal component can function well as sealing function, while the medium in liquid storage chamber is flowed back by current by pass
To the pump intake of plunger type metering pump, to accomplish plunger metering pump plunger sealing structure and plunger metering pump same service life.
Left cooling chamber and right cooling chamber is arranged in the present invention on pump head, and left cooling chamber and right cooling chamber are by being arranged in the pump housing
Interior cooling duct connection, coolant liquid can be injected from coolant inlet, be discharged from cooling liquid outlet, to medium and plunger motion
Pair is simultaneously effective cooled down in all directions；In order to increase cooling effect, multiple tracks annular groove, right cooling are set in left cooling chamber
The indoor mazy cooling liquid flowing channel of setting increases heat dissipation area, so both to increase the contact area of coolant liquid and pump head
It ensure that medium will not generate gasification because temperature increases, also ensure that plunger and sealing ring will not accelerate mill because temperature increases
Damage.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is B-B cross-sectional view in Fig. 1；
In figure: 1- plunger；The outer pressure cap of 2-；Pressure cap in 3-；4- third lip-shaped sealed ring；5- third support ring；6-O type sealing ring；
7- liquid storage chamber；The second lip-shaped sealed ring of 8-；The second support ring of 9-；The first lip-shaped sealed ring of 10-；The first support ring of 11-；12- pump
Head；13- current by pass；14- pump intake；15- pump discharge；The left cooling chamber of 16-；The right cooling chamber of 17-；18- sleeve；19- pump head is cold
But it covers；20- coolant inlet；21- cooling liquid outlet；The cooling duct 22-；23- cooling liquid flowing channel.
Specific embodiment
The invention is further explained in the following combination with the attached drawings of the specification:
A kind of double containment cools down pump head structure of piston pump entirely, and the structure of double containment is as follows: welded part, plunger being arranged on pump head 12
1 is arranged in welded part, two-stage seal assembly is arranged between plunger 1 and pump head 12, two-stage seal assembly is by primary seal group
Part and secondary seal component are constituted, and primary seal component is arranged between plunger and pump head, two are arranged between plunger and welded part
Grade seal assembly, pump head, plunger and welded part surround a liquid storage chamber 7, and liquid storage chamber is between two-stage seal assembly.
Preferably, the current by pass 13 of connection liquid storage chamber 7, the pump of current by pass 13 and pump head can be set on pump head 12
Entrance 14 is connected to, and the medium being stored in liquid storage chamber in this way can pass back into pump intake, and such medium would not leak into outside pump,
Compared with structure of the only setting liquid storage chamber without current by pass is arranged, the metering pump service life of the structure increases significantly, from
And accomplish plunger metering pump plunger sealing structure and plunger metering pump same service life.
Preferably, two-stage seal assembly is all made of O-ring seal.
Preferably, two-stage seal assembly is all made of lip-shaped sealed ring, and lip-shaped sealed ring is equipped with support ring.
Preferably, welded part can be set to one or two, lip-shaped sealed ring and support ring can also it is a set of or
Two sets of person.
The present invention uses two-stage sealing structure, and liquid storage chamber is arranged between two-stage seal assembly, is arranged one in liquid storage chamber
A current by pass is connected to the pump intake of metering pump, and this structure can guarantee that two-stage sealing structure successively plays sealing function, i.e.,
After primary seal component is ineffective, the medium of leakage is stored in liquid storage chamber, and the pressure in liquid storage chamber is well below pump
Pressure, such secondary seal component can function well as sealing function, while the medium in liquid storage chamber is flowed back by current by pass
To the pump intake of plunger type metering pump, to accomplish plunger metering pump plunger sealing structure and plunger metering pump same service life.
Cooling structure is as follows entirely: left cooling chamber 16 and right cooling chamber 17 being arranged on pump head 12, left cooling chamber setting exists
On the pump head of the secondary periphery of the friction that plunger and primary seal component are formed, right cooling chamber is arranged in pump head right part, left cooling chamber
It is connected to by setting in the intracorporal cooling duct 22 of pump with right cooling chamber.
Left cooling chamber 16 forms with the multiple tracks annular groove (being not marked in figure) and sleeve 18 being provided on pump head, sleeve
Cooling liquid outlet 21 is arranged multiple tracks annular groove periphery (for example sleeve weld is arranged on pump head) in 18 settings on sleeve；It is right
Cooling chamber 17 is formed from being provided with the cooling liquid flowing channel 23 and pump head cooling lid 19 of pump head right part, and cooling liquid flowing channel 23 can
To be set as maze-type structure, the outside of cooling liquid flowing channel 23 is arranged in pump head cooling lid 19, and (for example the welding of pump head cooling lid is set
Set on pump head), coolant inlet 20 is set in pump head cooling lid 19；Coolant liquid can be injected from coolant inlet 20, from
Cooling liquid outlet 21 is discharged, and simultaneously effective cools down in all directions to medium with plunger motion pair.
When plunger pump work, 1 bilateral reciprocation of plunger, medium enters from pump intake 14, before being extracted out from pump discharge 15,
Coolant liquid just enters right cooling chamber 17 from coolant inlet 20, by labyrinth type cooling liquid flowing channel 23, by cooling duct 22 into
Enter in left cooling chamber 16, is discharged around multiple tracks annular groove from cooling liquid outlet 21, simultaneously effective to medium and plunger motion pair
It is cooled down in all directions.
Left cooling chamber and right cooling chamber is arranged in the present invention on pump head, and left cooling chamber and right cooling chamber are by being arranged in the pump housing
Interior cooling duct connection, coolant liquid can be injected from coolant inlet, be discharged from cooling liquid outlet, to medium and plunger motion
Pair is simultaneously effective cooled down in all directions；In order to increase cooling effect, multiple tracks annular groove, right cooling are set in left cooling chamber
The indoor mazy cooling liquid flowing channel of setting increases heat dissipation area, so both to increase the contact area of coolant liquid and pump head
It ensure that medium will not generate gasification because temperature increases, also ensure that plunger and primary seal component will not add because temperature increases
Speed abrasion.
Embodiment
Two welded parts are arranged in the embodiment, i.e., interior pressure cap and outer pressure cap；It is close that two sets of lip types are arranged in primary seal component
Seal and support ring, i.e. the first lip-shaped sealed ring, the first support ring, the second lip-shaped sealed ring, the second support ring, secondary seal group
A set of lip-shaped sealed ring and support ring, i.e. third lip-shaped sealed ring, third support ring is arranged in part；Cooling structure is not made to become entirely
Change.
Specifically, the first support ring, the first lip-shaped sealed ring, the second support ring and the second lip-shaped sealed ring are successively set on
In the limit chamber of pump head, interior pressure cap and pump head threaded simultaneously touch the second lip-shaped sealed ring；Third support ring and third lip
Type sealing ring is set gradually in the limit chamber of interior pressure cap, and outer pressure cap and interior pressure cap threaded simultaneously touch third lip-type seal
Circle；Plunger, interior pressure cap and pump head surround liquid storage chamber, and liquid storage chamber is connected to the pump intake of metering pump through current by pass.
When installation, the first support ring 11, the first lip-shaped sealed ring 10, the second support ring 9, the second lip-shaped sealed ring 8 are pressed
Fig. 1 is sequentially loaded into pump head 12；O-ring seal 6 on the interior pressure cap 3 and is screwed in pump head 12, interior pressure cap 3 is made to touch the
Two lip-shaped sealed rings 8；Third support ring 5, third lip-shaped sealed ring 4 are sequentially loaded into interior pressure cap 3 by Fig. 1, then screw in outer pressure cap 2
Outer pressure cap 2 is set to touch third lip-shaped sealed ring 4；It is inserted into plunger 1, interior pressure cap 3 is adjusted, in the second support ring 9, the first support ring
The second lip-shaped sealed ring 8 is set to be close to plunger surface, obstruction leakage with the lip edge of the first lip-shaped sealed ring 10 under 11 collective effects
Occur and obtain sealing effect, i.e., the first order seals；Outer pressure cap 2 is adjusted, makes third lip-type seal under the effect of third support ring 5
It encloses 4 lip edges and is close to plunger surface, again serve to sealing effect, is i.e. the second level seals；Pressure cap 3 and pump head 12, plunger 1 in simultaneously
Between form liquid storage chamber 7, and current by pass 13 is set on pump head 12 and connects liquid storage chamber 7, current by pass 13 is connected to metering
The pump intake of pump.
When plunger pump work, 1 bilateral reciprocation of plunger, medium enters from pump intake 14, and pump discharge 15 is extracted out；In medium
Under pressure collective effect, the lip edge of the second lip-shaped sealed ring 8 and the first lip-shaped sealed ring 10 is further adjacent to plunger surface, from
And enhance sealing effect.
When the first order sealing structure that the second lip-shaped sealed ring 8, the first lip-shaped sealed ring 10 and plunger 1 are formed is ineffective
Afterwards, the medium of leakage is stored in liquid storage chamber 7, and the pressure in liquid storage chamber 7 is well below pump pressure, such third lip-shaped sealed ring
4 second level sealing structures formed with plunger 1 can function well as sealing function, while the medium in liquid storage chamber passes through aerial drainage
Channel flows back into the pump intake of plunger type metering pump, and it is outer that such medium would not leak into pump, with only setting liquid storage chamber without
The structure that current by pass is arranged is compared, and the metering pump service life of the structure increases significantly, to accomplish plunger metering pump plunger
Sealing structure and plunger metering pump same service life.
When plunger pump work, 1 bilateral reciprocation of plunger, medium enters from pump intake 14, before being extracted out from pump discharge 15,
Coolant liquid just enters right cooling chamber from coolant inlet, by labyrinth type cooling liquid flowing channel, enters left cooling by cooling duct
In room, it is discharged around multiple tracks annular groove from cooling liquid outlet, medium is simultaneously effective carried out in all directions with plunger motion pair
It is cooling.
Claims (10)
1. a kind of double containment cools down pump head structure of piston pump entirely, it is characterised in that: welded part is arranged on pump head, plunger is arranged in
In welded part, two-stage seal assembly is set, two-stage seal assembly is close by primary seal component and second level between plunger and pump head
Sealing assembly is constituted, and primary seal component is arranged between plunger and pump head, and secondary seal component is arranged between plunger and welded part,
Pump head, plunger and welded part surround a liquid storage chamber, and liquid storage chamber is between two-stage seal assembly；Left cooling chamber is set on pump head
With right cooling chamber, left cooling chamber is arranged on the pump head for the secondary periphery of friction that plunger and primary seal component are formed, right cooling chamber
Setting is connected to by setting in the intracorporal cooling duct of pump in pump head right part, left cooling chamber and right cooling chamber.
2. a kind of double containment according to claim 1 cools down pump head structure of piston pump entirely, it is characterised in that on the pump head
The current by pass of connection liquid storage chamber is set.
3. a kind of double containment according to claim 2 cools down pump head structure of piston pump entirely, it is characterised in that the aerial drainage is logical
Road is connected to the pump intake of pump head.
4. a kind of double containment according to claim 1 cools down pump head structure of piston pump entirely, it is characterised in that the two-stage is close
Sealing assembly is all made of O-ring seal or lip-shaped sealed ring, and lip-shaped sealed ring is equipped with support ring.
5. a kind of double containment according to claim 1 or 2 cools down pump head structure of piston pump entirely, it is characterised in that the crimping
Component is made of interior pressure cap and outer pressure cap, and the primary seal component is by the first support ring, the first lip-shaped sealed ring, the second support
Ring and the second lip-shaped sealed ring composition, the first support ring, the first lip-shaped sealed ring, the second support ring and the second lip-shaped sealed ring according to
Secondary to be arranged in the limit chamber of pump head, interior pressure cap and pump head threaded simultaneously touch the second lip-shaped sealed ring；The second level is close
Sealing assembly is made of third support ring and third lip-shaped sealed ring, and third support ring and third lip-shaped sealed ring set gradually internal pressure
In the limit chamber of cap, outer pressure cap and interior pressure cap threaded simultaneously touch third lip-shaped sealed ring；The plunger, interior pressure cap and pump
Head circumference is at liquid storage chamber.
6. a kind of double containment according to claim 1 or 2 cools down pump head structure of piston pump entirely, it is characterised in that the left side is cold
But room forms with the multiple tracks annular groove and sleeve being provided on pump head, and sleeve is arranged in multiple tracks annular groove periphery.
7. a kind of double containment according to claim 1 or 2 cools down pump head structure of piston pump entirely, it is characterised in that the right side is cold
But room is formed from being provided with the cooling liquid flowing channel and pump head cooling lid of pump head right part, and pump head cooling lid is arranged in coolant liquid
The outside of runner.
8. a kind of double containment according to claim 6 cools down pump head structure of piston pump entirely, it is characterised in that the sleeve weldering
It connects and is arranged on pump head, cooling liquid outlet is set on sleeve.
9. a kind of double containment according to claim 7 cools down pump head structure of piston pump entirely, it is characterised in that the pump head is cold
But lid welding is arranged on pump head, and coolant inlet is arranged in pump head cooling lid.
10. a kind of double containment according to claim 7 cools down pump head structure of piston pump entirely, it is characterised in that the coolant liquid
Runner is maze-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542288.XA CN109372738A (en) | 2018-12-17 | 2018-12-17 | A kind of double containment cools down pump head structure of piston pump entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542288.XA CN109372738A (en) | 2018-12-17 | 2018-12-17 | A kind of double containment cools down pump head structure of piston pump entirely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372738A true CN109372738A (en) | 2019-02-22 |
Family
ID=65374385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542288.XA Pending CN109372738A (en) | 2018-12-17 | 2018-12-17 | A kind of double containment cools down pump head structure of piston pump entirely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761989A (en) * | 2019-11-26 | 2020-02-07 | 中国船舶重工集团公司第七一九研究所 | Medium isolation reciprocating plunger pump and conveying system with same |
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| CN209308943U (en) * | 2018-12-17 | 2019-08-27 | 浙江爱力浦科技股份有限公司 | A kind of double containment cools down pump head structure of piston pump entirely |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202468266U (en) * | 2011-12-21 | 2012-10-03 | 天津市聚能高压泵有限公司 | Hydraulic end part supporting structure for high-pressure plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761989A (en) * | 2019-11-26 | 2020-02-07 | 中国船舶重工集团公司第七一九研究所 | Medium isolation reciprocating plunger pump and conveying system with same |
| CN110761989B (en) * | 2019-11-26 | 2023-09-08 | 中国船舶重工集团公司第七一九研究所 | Medium isolation reciprocating plunger pump and conveying system with same |
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