CN207920841U - A kind of fluid end of reversed suction self-balance type booster pump - Google Patents
A kind of fluid end of reversed suction self-balance type booster pump Download PDFInfo
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- CN207920841U CN207920841U CN201820376660.3U CN201820376660U CN207920841U CN 207920841 U CN207920841 U CN 207920841U CN 201820376660 U CN201820376660 U CN 201820376660U CN 207920841 U CN207920841 U CN 207920841U
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- booster pump
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Abstract
The utility model is related to the fluid ends of a kind of reversed suction self-balance type booster pump, including the pump housing, plunger channel and discharge valve passage are equipped in the pump housing, plunger and dump valve is respectively set in two channels, wherein plunger is a reducing type plunger, using integrated structure design, the plunger major diameter section and plunger path section not waited with outer diameter, and it is equipped with the reciprocating inlet valve of plunger on the end face of big path section reducing, and is equipped with the feed liquor runner that can be communicated with sucking valve chamber in plunger major diameter section.The utility model solves no matter how inlet and outlet pressure changes, and can reach the problem of the high inlet pressure of reaction balance.
Description
Technical field
The utility model is related to reciprocal pump technical fields, more particularly, to a kind of liquid of reversed suction self-balance type booster pump
Power end.
Background technology
The import pressure medium of booster pump is high, using common reciprocating pump, piston reciprocation movement, power end connecting rod bearing shell stress
Direction is identical, and lubricating oil is difficult to enter inside bearing shell, leads to the failure for bearing shell dry grinding damage often occur.That specially designs is reciprocal
Booster pump uses reducing type plunger, has the function of certain high inlet pressure of balance, i.e., in rated range, it is ensured that cross
Head, connecting rod concentric reducer watt, crankshaft handle lubricating oil condition and service life.But because booster pump actually use operating mode variation, i.e., into
Outlet pressure operating mode is usually different from the pressure working condition of design.When practical inlet pressure is low higher than design inlet pressure or supercharging value
When rated value so that plunger moves forward and backward suffered resultant direction always backward, always by one side between bearing shell and bent axle
Active force makes lubricating oil cannot be introduced into bearing shell sliding motion pair, and bearing shell is caused to generate because of oil-free lubrication or lubricated not with crankshaft handle
Fully burn failure of removal.
Invention content
Technical problem to be solved in the utility model is to provide a kind of reversed suction from flat for state of the art
The fluid end of weighing apparatus type booster pump solves no matter how inlet and outlet pressure changes, can reach the difficulty of the high inlet pressure of reaction balance
Topic.
Technical solution is used by the utility model solves above-mentioned technical problem：This reversed suction self-balance type booster pump
Fluid end, including the pump housing is equipped with plunger channel and discharge valve passage in the pump housing, plunger and discharge is respectively set in two channels
Valve uses integrated structure design it is characterized in that the plunger is a reducing type plunger with inlet valve, is not waited with outer diameter
Plunger major diameter section and plunger path section, and be equipped with the reciprocating suction of plunger on the end face of big path section reducing
Enter valve, and is equipped with the feed liquor runner that can be communicated with sucking valve chamber in the plunger major diameter section.
It is further described that the inlet valve includes the inhalation valve being sleeved in plunger path section outer circle and makes the sucking
There is spool the spring to major diameter section side mobile trend, inhalation valve to have the end face to fit with reducing end face, inhalation valve
Fore-aft motion make the feed liquor runner with sucking valve chamber on or off.
It is further described that a baffle ring is also cased in the plunger path section, to limit inlet valve maximum Lift.
It is further described that the spring pocket is in plunger path section outer circle, the both ends of spring withstand on baffle ring and inlet valve
Between core.
It is further described that the plunger is arranged by sealed letter body and forward and backward sealing pair in the plunger channel of the pump housing,
The path section of plunger is located at connect with the power end of booster pump one, and by the plunger, sealed letter body and forward and backward close
Adjutant's Feng plunger channel is enclosed water suction valve chamber, is located at the position that discharge valve passage intersects with plunger channel.
Compared with prior art, the utility model has the advantage of：Reducing type plunger front-rear reciprocation movement does work, it is ensured that
Engine crankshaft bush forms good oil film with bent axle.For effective solution because inlet pressure is excessively high, the suffered resultant force of plunger is always backward, bent
One side stress, lubricating oil cannot be introduced into sliding motion pair always between bearing shell and bent axle, cause engine crankshaft bush and crankshaft handle because
Oil-free lubrication and the key technology difficulty for burning failure.Simultaneously as using reducing type piston structure, import can be made full use of
Pressure energy effectively reduces plunger force suffered by plunger, extends the service life of crosshead, connecting rod concentric reducer etc..
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is conventional outlet pressure balance type reciprocating booster pump operation principle schematic diagram.
Fig. 3 is existing inlet pressure balanced type boosting water injection pump operation principle schematic diagram.
Fig. 4 is the reversed suction self-balance type booster pump operation principle schematic diagram of the utility model.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing embodiment.
It is the structural schematic diagram of the reversed suction self-balance type supercharging pump hydraulic end of the utility model, including pump as shown in Figure 1
Body 1, plunger 2, inlet valve 3, dump valve 4 etc., wherein：
It is equipped with the plunger channel being mutually communicated and discharge valve passage in the pump housing 1, plunger 2 and dump valve 4 is respectively set.This reality
Plunger channel shown in illustration is applied to arrange in central axis with discharge valve passage.
Plunger 2 is located at by sealed letter body, front and back sealing pair etc. in plunger channel, can make front-rear reciprocation movement, and by column
Plunger channel is enclosed water suction valve chamber 30 by plug 2, sealed letter body and forward and backward sealing pair etc., and inlet valve 3 is in sucking valve chamber 30
It is interior.This plunger 2 is a reducing type plunger, and integrated structure design is used with inlet valve 3, it has the plunger major diameter section that outer diameter does not wait
24 and plunger path section 23, plunger path section 23 is located at one to connect with the power end of booster pump, and in plunger major diameter section
It is provided with feed liquor runner 21,22, can be communicated with sucking valve chamber.
Inlet valve 3 is arranged on the big path section reducing end face 25 of plunger 2, is moved with 2 synchronous reciprocating of plunger, it includes
Valve seat 31, inhalation valve 32, baffle ring 33 and spring 34 are sucked, wherein sucking valve seat 31 is located at plunger ring deformation diameter endface,
With plunger integral structure.Inhalation valve 32 is placed in the outer circle of plunger path section 23, and baffle ring 33 is arranged for limiting inlet valve 3
Lift, spring 34 is also placed in the outer circle of plunger path section 23, and both ends are against inhalation valve 32 and baffle ring 33 respectively
Between, make inhalation valve 32 that there is the trend moved to 24 side of major diameter section always.Inhalation valve 32 has and 25 phase of reducing end face
The fore-aft motion of the end face of fitting, inhalation valve 32 makes feed liquor runner 21,22 and sucking 30 on or off of valve chamber.Reducing type column
Plug 2 travels forward, and pumping enters medium, and import high pressure is overcome to do work；Reducing type plunger 2 moves backward, and dump valve 4 is opened,
Under inlet pressure and reciprocator's synergy, supercharging discharge medium, and outlet pressure is overcome to do work.
The utility model uses new design concept, and no matter how inlet and outlet pressure changes, and can reach reaction balance height
Inlet pressure.Inlet valve is arranged on the reducing end face of reducing type plunger, and is moved with plunger synchronous reciprocating, column for its equilibrium principle
The equal stress acting of front-rear reciprocation movement, forward plunger motion are filled in, reducing type plunger overcomes import pressure energy to do work, and plunger is transported backward
Dynamic, the import pressure energy balance portion of reducing type plunger exports pressure energy, and insufficient section is provided by power end reciprocator, to realize
Connecting rod concentric reducer bearing shell good lubrication, therefore, no matter how inlet and outlet pressure changes, the reversed suction self-balance type of the utility model
Booster pump has the function of the high inlet pressure of self-balancing, it is ensured that good lubrication operating mode inside pump power end link bearing shell, prevent it is high into
When mouth pressure, power end link concentric reducer bearing shell leads to the problem of dry grinding damage because of insufficient lubrication.
Utility model and traditional booster pump are now made into a comparative illustration in conjunction with equilibrium principle.
The equilibrium principle that conventional reciprocating booster pump uses：Using outlet pressure as balanced source, need to according to actual use into
The relationship of mouth pressure and outlet pressure, to determine the difference in areas of plunger concentric reducer.There are 4 chambers in the general high voltage pump housing, i.e.,：A—
Low pressure chamber, B-working chamber, C-high pressure chest, D-counter balance pocket.When work, reducing type plunger is reciprocating in the pump housing；Work as change
Diameter formula plunger be suction stroke when, working chamber internal volume increase, so that dump valve is closed, formed local depression, working media into
Under the P1 effects of mouth pressure, inlet valve is opened, into pump housing working chamber B；Since high pressure chest C is connected to through high-pressure hose with counter balance pocket D,
Reducing type plunger rear annular area is acted on by high pressure hydraulic always, and the hydraulic pressure of reducing type plunger front is acted on inlet pressure
Dynamic balance.Conventional outlet pressure balance type reciprocating booster pump operation principle schematic diagram as shown in Figure 2.
Patent of invention CN101603515A discloses inlet pressure balanced type boosting water injection pump, equilibrium principle：With import
Pressure is as balanced source, and the plunger rod of reducing type plunger is identical with balance shank diameter, and no matter how inlet and outlet pressure changes, equal energy
Make reducing plunger absolute stress balance in suction stroke.
Reducing type plunger stress and acting situation：IfStroke is L
Plunger moves backward：Plunger stress F1=0
Do work W1=0
Forward plunger motion：Plunger stress F2=(P2-P1)·S2Impact direction is backward
Do work W2=F2L=(P2-P1)·S2·L
One stroke done total work back and forth：W=W1+W2=(P2-P1)·S2The inlet pressure balanced types of L as shown in Figure 3
Boosting water injection pump operation principle schematic diagram.
The reversed suction self-balance type booster pump operation principle schematic diagram of the utility model is as shown in figure 4, it is used newly
Design concept, no matter how inlet and outlet pressure changes, and can reach the high inlet pressure of reaction balance.Its equilibrium principle, reducing type
Inlet valve is set on the reducing end face of plunger, and is moved with plunger synchronous reciprocating, the equal stress acting of plunger front-rear reciprocation movement.Become
Diameter formula plunger stress and acting situation：IfStroke is L
Plunger moves backward：Plunger stress F3=P2·S2-P1·S1<F2
Different supercharging values can be directed to, ensure resultant direction suffered by plunger always forward by adjusting d1 sizes
Do work W3=F3L=(P2·S2-P1·S1)·L
Forward plunger motion：Plunger stress F4=P1·(S1-S2)<F2Impact direction is backward
Do work W4=F4L=P1·(S1-S2)·L
One stroke done total work back and forth：W'=W3+W4=(P2-P1)·S2L=W
The utility model self-balancing operation principle and conventional reciprocating booster pump equilibrium principle of the outlet pressure as power source
It compares, solves conventional reciprocating booster pump because inlet and outlet pressure operating mode is different from the pressure working condition of design, make high pressure in counter balance pocket
The hydraulic coupling that the inlet pressure in hydraulic coupling and working chamber that medium generates generates is uneven, causes power end to generate heat, bearing liner burnout
Failure problems.
The utility model self-balancing operation principle and inlet pressure balanced type pressurized water injection of the inlet pressure as power source
Pump equilibrium principle is compared, and done total work is identical back and forth for a stroke, and maximum plunger power is smaller, and when work before and after reducing type plunger
Equal stress acting is moved back and forth, makes power end Impact direction alternate change, greatly improves the lubricating condition of bent axle and bearing shell.Together
When, the utility model is not due to having a balancing pole of reducing type plunger front, and inlet valve and reducing type plunger integrated design, therefore
Compact-sized, part is few, small.
Above description is merely a prefered embodiment of the utility model, it is noted that for those of ordinary skill in the art
For, under the premise of not departing from the principles of the present invention, a variety of remodeling or improvement can also be carried out to the utility model, these
It is regarded as within the scope of protection of the utility model.
Claims (5)
1. a kind of fluid end of reversed suction self-balance type booster pump, including the pump housing, the pump housing is interior to be equipped with plunger channel and dump valve
Plunger and dump valve is respectively set in two channels in channel, it is characterised in that：The plunger is a reducing type plunger, is had outer
The plunger major diameter section and plunger path section that diameter does not wait, and be equipped on the end face of big path section reducing and acted as back and forth with plunger one
The inlet valve of movement, and the feed liquor runner that can be communicated with sucking valve chamber is equipped in the plunger major diameter section.
2. fluid end as described in claim 1, it is characterised in that：The inlet valve includes being sleeved in plunger path section outer circle
Inhalation valve and make the inhalation valve have to major diameter section side mobile trend spring, inhalation valve have and reducing end face
The fore-aft motion of the end face to fit, inhalation valve makes the feed liquor runner and sucking valve chamber on or off.
3. fluid end as claimed in claim 2, it is characterised in that：One is also cased in the plunger path section to inhale to limit
Enter the baffle ring of valve maximum opening travel.
4. fluid end as claimed in claim 3, it is characterised in that：The spring pocket is in plunger path section outer circle, spring
Both ends withstand between baffle ring and inhalation valve.
5. such as Claims 1-4 any one of them fluid end, it is characterised in that：The plunger by sealed letter body and before,
Sealing pair is arranged in the plunger channel of the pump housing afterwards, and the path section of plunger is located at one to connect with the power end of booster pump, and
And plunger channel is enclosed water suction valve chamber by the plunger, sealed letter body and forward and backward sealing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376660.3U CN207920841U (en) | 2018-03-14 | 2018-03-14 | A kind of fluid end of reversed suction self-balance type booster pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376660.3U CN207920841U (en) | 2018-03-14 | 2018-03-14 | A kind of fluid end of reversed suction self-balance type booster pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207920841U true CN207920841U (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820376660.3U Active CN207920841U (en) | 2018-03-14 | 2018-03-14 | A kind of fluid end of reversed suction self-balance type booster pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412751A (en) * | 2018-03-14 | 2018-08-17 | 宁波合力机泵股份有限公司 | A kind of fluid end of reversed suction self-balance type booster pump |
-
2018
- 2018-03-14 CN CN201820376660.3U patent/CN207920841U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412751A (en) * | 2018-03-14 | 2018-08-17 | 宁波合力机泵股份有限公司 | A kind of fluid end of reversed suction self-balance type booster pump |
| CN108412751B (en) * | 2018-03-14 | 2024-02-06 | 宁波合力机泵股份有限公司 | Hydraulic end of reverse suction and discharge self-balancing booster pump |
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