CN207437334U - The pump head device of plunger pump - Google Patents
The pump head device of plunger pump Download PDFInfo
- Publication number
- CN207437334U CN207437334U CN201721324850.2U CN201721324850U CN207437334U CN 207437334 U CN207437334 U CN 207437334U CN 201721324850 U CN201721324850 U CN 201721324850U CN 207437334 U CN207437334 U CN 207437334U
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- pump head
- bushing
- suction side
- pump
- inner cavity
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Abstract
The utility model discloses a kind of pump head devices of plunger pump, belong to oil-field flooding technical field.The pump head device includes：Pump head and bushing；The aperture of the suction side of the pump head is more than the aperture of the outlet side of the pump head, and the inner cavity of the suction side of the pump head and the inner cavity of the outlet side of the pump head are stepped；The bushing is tubular, and is bumped into the inner cavity of the suction side of the pump head, and the outer diameter of the bushing is less than the aperture of the pump head suction side, and the internal diameter of the bushing is equal to the aperture of the outlet side of the pump head；With carrying out fluid apertures correspondence position equipped with imbibing hole on the pump head on the bushing.The utility model in the inner cavity of the suction side of pump head by setting bushing, so as to when thorn dehiscence furrow slot or pit occur for the bushing of suction side inner cavity, individually the bushing of suction side inner cavity can be replaced, it is whole without replacing pump head, the labor intensity of operating personnel is reduced, reduces the maintenance cost of plunger pump.
Description
Technical field
The utility model is related to oil-field flooding technical field, more particularly to a kind of pump head device of plunger pump.
Background technology
Recovery process in oil field in order to increase strata pressure, maintains the stable high yield in oil field, often passes through plunger pump
Oilfield sewage is pressurizeed and injects stratum.Since oilfield sewage has corrosivity, the suction side inner wall of plunger pump pump head is be easy to cause
There is 3-5 millimeters of thorn dehiscence furrow slot or irregular pit, cause the close of gasket between the suction side of pump head and outlet side
Envelope property is deteriorated, and so as to which the highly pressurised liquid of the outlet side of pump head be caused to flow backwards the suction side into pump head, makes the outlet side of pump head
Discharge pressure declines, and reduces the pump efficiency of plunger pump.
After there is thorn dehiscence furrow slot or pit in the suction side inner wall of pump head, can by electric welding to thorn dehiscence furrow slot or pit into
Row welding, then the welding position of the suction side inner wall of pump head is polished flat by angle grinder, enhance suction side and the row of pump head
The leakproofness of gasket between outlet.However, after due to polishing, the adhesive strength between welding position and pump head inner wall declines,
And welding position thickness is thinning, causes welding position easy to fall off after high pressure is subject to wash away, at this point, can only be by replacing pump head
Can continue water filling, and replace the operation of pump head, increase the labor intensity of operating personnel, and add the repair of plunger pump into
This.Therefore, there is an urgent need for a kind of pump head device of plunger pump, to reduce the labor intensity of operating personnel, the maintenance cost of plunger pump is reduced
With.
Utility model content
In order to reduce the labor intensity of operating personnel, and reduce the maintenance cost of plunger pump, the utility model provides one
The pump head device of kind plunger pump.The technical solution is as follows：
The utility model provides a kind of pump head device of plunger pump, and the pump head device includes：Pump head and bushing；
The aperture of the suction side of the pump head is more than the aperture of the outlet side of the pump head, and the suction side of the pump head
Inner cavity and the inner cavity of the outlet side of the pump head are stepped；
The bushing is tubular, and is bumped into the inner cavity of the suction side of the pump head, and the outer diameter of the bushing is less than described
The aperture of pump head suction side, the internal diameter of the bushing are equal to the aperture of the outlet side of the pump head；
With carrying out fluid apertures correspondence position equipped with imbibing hole on the pump head on the bushing.
Optionally, the axial depth of the suction side of the pump head is equal to the axial length of the bushing.
Optionally, the pump head device further includes the first O-ring seals；
The outer wall of the bushing is respectively equipped at least one first along the axial of the bushing in the both sides of the imbibing hole
Seal groove is placed with first O-ring seals in each first seal groove.
Optionally, the pump head device further includes the second O-ring seals；
The bushing is equipped with the second seal groove close to the end face of the outlet side of the pump head, is placed in second seal groove
There are second O-ring seals.
Optionally, the pump head device further includes the first positioning key；
The correspondence position of one end of the outlet side of the pump head and the bushing away from the pump head is respectively equipped with the first key
Slot and the second keyway, first positioning key are located in the positioning spline of first keyway and second keyway composition.
Optionally, first positioning key is list structure.
Optionally, the end face of the suction side of the pump head is provided with positioning groove, away from the pump head in the bushing
The second positioning key is provided on the surface of one end of outlet side, second positioning key is located in the positioning groove.
The advantageous effect of technical solution provided by the utility model is：The utility model passes through in the suction side of pump head
Chamber is provided with the bushing of imbibing hole, so as to enter pump head by the imbibing hole come fluid apertures and bushing of pump head in oilfield sewage
In the suction side of pump head thorn dehiscence furrow slot or pit occur for suction side, that is to say that non-thorn dehiscence furrow slot or pit occur for the inner wall of bushing
When, the bushing that can be individually set to the inner cavity of the suction side of pump head is replaced, whole without replacing pump head, so as to reduce
The labor intensity of operating personnel reduces the maintenance cost of plunger pump.
Description of the drawings
Fig. 1 is a kind of structure diagram of the pump head device for plunger pump that the utility model embodiment provides；
Fig. 2 is a kind of overlooking the structure diagram for bushing that the utility model embodiment provides；
Fig. 3 is a kind of backsight structural representation for bushing that the utility model embodiment provides；
Fig. 4 is the overlooking the structure diagram for another bushing that the utility model embodiment provides.
Reference numeral：
1：Pump head；2：Bushing；3：First O-ring seals；4：Second O-ring seals；5：First positioning key；
21：Imbibing hole；22：First seal groove；23：Second seal groove；24：Second keyway；25：Second positioning key.
Specific embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Fig. 1 is a kind of structure diagram of the pump head device for plunger pump that the utility model embodiment provides, referring to Fig. 1,
The plunger pump can include multiple pump head devices, and each pump head device can include pump head 1 and bushing 2；
The aperture of the suction side of pump head 1 is more than the aperture of the outlet side of pump head 1, and the inner cavity of the suction side of pump head 1 and pump
The inner cavity of first 1 outlet side is stepped；Bushing 2 is tubular, and is bumped into the inner cavity of the suction side of pump head 1, the outer diameter of bushing 2
Less than the aperture of 1 suction side of pump head, the internal diameter of bushing 2 is equal to the aperture of the outlet side of pump head 1；With coming on pump head 1 on bushing 2
Fluid apertures correspondence position is equipped with imbibing hole 21.
Wherein, pump head 1 can be horizontal pump head, naturally it is also possible to for the pump head of other forms, the utility model embodiment
This is not limited.
The utility model is by being provided with the bushing of imbibing hole in the inner cavity of the suction side of pump head, so as in oilfield sewage
The suction side of pump head is entered by the imbibing hole come fluid apertures and bushing of pump head, thorn dehiscence furrow slot or recessed occurs in the suction side of pump head
Hole when that is to say that non-thorn dehiscence furrow slot or pit occur for the inner wall of bushing, can individually be set the inner cavity of the suction side of pump head
Bushing is replaced, whole without replacing pump head, so as to reduce the labor intensity of operating personnel, reduces the repair of plunger pump
Expense.
Wherein, after bushing 2 is bumped into the suction side of pump head 1, in plunger pump work, in order to avoid bushing 2 is in pump head 1
Suction side is axially moveable, and so as to which the imbibing hole 21 on the inlet opening and bushing 2 on pump head 1 be caused to misplace, plunger pump is caused to send out
Raw failure, the axial depth of the suction side of pump head 1 can be equal to the axial length of bushing 2.
In the course of work of plunger pump, oilfield sewage may flow into pump head 1 along the seam crossing of inlet opening and imbibing hole 21
Suction side and bushing 2 between gap, so as to which the inner wall to the suction side of pump head 1 causes to corrode, while to the outer wall of bushing 2
It causes to corrode.When inner wall in the suction side of pump head 1 causes corrosion, the highly pressurised liquid of the outlet side of pump head 1 may be caused to flow backwards
Into the suction side of pump head 1, pump efficiency is reduced；Oilfield sewage is carried out at the same time the inner and outer wall of bushing 2 corrosion simultaneously, shortens lining
The service life of set 2.Therefore, referring to Fig. 2 or Fig. 4, pump head device can also include the first O-ring seals 3, the outer wall of bushing 2
At least one first seal groove 22, each first seal groove 22 are respectively arranged in the both sides of imbibing hole 21 along the axial direction of bushing 2
Inside it is placed with the first O-ring seals 3.
At this point, by the cooperation of each first seal groove 22 and corresponding first O-ring seals 3, it can be dirty to avoid oil field
Water flows into the gap between the suction side of pump head 1 and bushing 2 along the seam of inlet opening and imbibing hole 21, and then avoids to pump head 1
The inner wall of suction side cause to corrode and the outer wall of bushing 2 caused to corrode.It further, can also be close by the first O shapes
Seal 3 avoids bushing 2 from being subjected to displacement in the suction side of pump head 1.Certainly, except the outer wall in bushing 2 is being inhaled along the axial direction of bushing 2
The both sides of fluid apertures 21 are respectively arranged with outside at least one first seal groove 22, can also bushing 2 outer wall and along imbibing hole 21
Surrounding at least one first seal groove is set, the utility model embodiment does not limit this.
In the course of work of plunger pump, oilfield sewage is also possible between the contact surface of the outlet side along bushing 2 and pump head 1
Seam crossing flow into the gap between the suction side of pump head 1 and bushing 2, so as to which the inner wall of the suction side to pump head 1 causes to corrode,
Simultaneously the outer wall of bushing 2 is caused to corrode.Therefore, referring to Fig. 3, pump head device can also include the second O-ring seals 4, bushing 2
The second seal groove 23 is equipped with close to the end face of the outlet side of pump head 1, the second O-ring seals 4 are placed in the second seal groove 23.This
When, it, can be to avoid oilfield sewage along bushing 2 by the cooperation of each second seal groove 23 and corresponding second O-ring seals 4
Seam crossing between the contact surface of the outlet side of pump head 1 flows into the gap between the suction side of pump head 1 and bushing 2, and then keeps away
Exempt from that the inner wall of the suction side of pump head 1 is caused to corrode and the outer wall of bushing 2 is caused to corrode.
In the course of work of plunger pump, in order to avoid the inner cavity inserted sleeve 2 of the suction side of pump head 1 radially occurs
It rotates, misplaces so as to cause the inlet opening on pump head 1 and the imbibing hole on bushing 2, plunger pump is caused to break down, referring to
Fig. 1, pump head device can also include the first positioning key 5, the correspondence position of one end of the outlet side of pump head 1 and bushing 2 away from pump head 1
It puts and is respectively equipped with the first keyway and the second keyway 24, the first positioning key 5 is located at the positioning of the first keyway and the second keyway 24 composition
In keyway.
Wherein, the cross section of the positioning spline of the first keyway and the second keyway 24 composition can be circular shape, can also
It is rectangular shape, as long as the sectional area of the first positioning key 5 is more than sectional area, the sectional area more than the second keyway 24 of the first keyway
And less than the sectional area of positioning spline, it that is to say that the first positioning key is located at the positioning of the first keyway and the second keyway 24 composition
In keyway, it is ensured that pump head 1 and bushing 2 will not radially relatively move.
Wherein, the first positioning key 5 is can be with list structure, at this point, the first keyway and the second keyway 24 are respectively in 1 He of pump head
The axial direction of bushing 2 has certain depth.
Certainly, pump head device ensures that pump head 1 and bushing 2 do not occur radially relatively except that can include the first positioning key 5
Mobile outer, the end face of the suction side of pump head 1 can also be provided with positioning groove, at this point, referring to Fig. 4, away from pump head 1 in bushing 2
Outlet side one end surface on be provided with the second positioning key 25, the second positioning key 25 is located in positioning groove.
When bushing 2 is installed, the second positioning key 25 on bushing 2 can be caught in the positioning groove set on pump head 1, kept away
Exempt from pump head 1 and bushing 2 does not relatively move radially, the utility model embodiment does not limit this.
The utility model is by being provided with the bushing of imbibing hole in the inner cavity of the suction side of pump head, by axial along bushing
It the cooperation of at least one first seal groove and the first O-ring seals that are set respectively in imbibing hole both sides and is leaned on by bushing
The cooperation of the second seal groove and the second O-ring seals that the end face of the outlet side of nearly pump head is set, avoids oilfield sewage to pump head
The corrosion of suction side inner wall and liner outer wall extends the service life of bushing 2.Meanwhile in pump head and bushing away from the pump head
Outlet side one end set composition positioning spline the first keyway and the second keyway, with by the first positioning key avoid pump head and
Bushing relatively moves.In plunger pump work, if thorn dehiscence furrow slot or pit occur for the suction side of pump head, bushing that is to say
Inner wall thorn dehiscence furrow slot occurs or during pit, can the bushing of the independent suction side to being bumped into pump head replace, and without more
Pump head entirety is changed, so as to reduce the labor intensity of operating personnel, reduces the maintenance cost of plunger pump.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of pump head device of plunger pump, which is characterized in that the pump head device includes：Pump head and bushing；
The aperture of the suction side of the pump head is more than the aperture of the outlet side of the pump head, and the inner cavity of the suction side of the pump head
It is stepped with the inner cavity of the outlet side of the pump head；
The bushing is tubular, and is bumped into the inner cavity of the suction side of the pump head, and the outer diameter of the bushing is less than the pump head
The aperture of suction side, the internal diameter of the bushing are equal to the aperture of the outlet side of the pump head；
With carrying out fluid apertures correspondence position equipped with imbibing hole on the pump head on the bushing.
2. pump head device as described in claim 1, which is characterized in that the axial depth of the suction side of the pump head is equal to described
The axial length of bushing.
3. pump head device as described in claim 1, which is characterized in that the pump head device further includes the first O-ring seals；
The outer wall of the bushing is respectively equipped at least one first sealing in the both sides of the imbibing hole along the axial of the bushing
Slot is placed with first O-ring seals in each first seal groove.
4. the pump head device as described in claim 1 or 3, which is characterized in that the pump head device further includes the sealing of the 2nd O shapes
Circle；
The bushing is equipped with the second seal groove close to the end face of the outlet side of the pump head, is placed in second seal groove
State the second O-ring seals.
5. the pump head device as described in claim 1-3 is any, which is characterized in that the pump head device further includes the first positioning
Key；
The correspondence position of one end of the outlet side of the pump head and the bushing away from the pump head be respectively equipped with the first keyway and
Second keyway, first positioning key are located in the positioning spline of first keyway and second keyway composition.
6. pump head device as claimed in claim 5, which is characterized in that first positioning key is list structure.
7. the pump head device as described in claim 1-3 is any, which is characterized in that the end face of the suction side of the pump head is provided with
Positioning groove, is provided with the second positioning key in the bushing on the surface of one end of the outlet side away from the pump head, and described the
Two positioning keys are located in the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721324850.2U CN207437334U (en) | 2017-10-16 | 2017-10-16 | The pump head device of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721324850.2U CN207437334U (en) | 2017-10-16 | 2017-10-16 | The pump head device of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437334U true CN207437334U (en) | 2018-06-01 |
Family
ID=62292273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721324850.2U Active CN207437334U (en) | 2017-10-16 | 2017-10-16 | The pump head device of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437334U (en) |
-
2017
- 2017-10-16 CN CN201721324850.2U patent/CN207437334U/en active Active
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