CN205101219U - Plunger pump, plunger pump fluid end and sealed combination valve thereof - Google Patents
Plunger pump, plunger pump fluid end and sealed combination valve thereof Download PDFInfo
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- CN205101219U CN205101219U CN201520887043.6U CN201520887043U CN205101219U CN 205101219 U CN205101219 U CN 205101219U CN 201520887043 U CN201520887043 U CN 201520887043U CN 205101219 U CN205101219 U CN 205101219U
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Abstract
The application discloses the sealed combination valve of plunger pump fluid end is including case, disk seat and leading truck, seal structure between disk seat and the case is linear contact seal, the axis of leading truck and the dead in line of disk seat, case for the direction case moves along the relative disk seat of axis of disk seat. The case and the disk seat of this sealed combination valve adopt linear contact seal structure, therefore, when the removal of the relative disk seat of case is closed, even if the large granule solid material of diverting agent gets into the linear contacting area between case and the disk seat, also can be extruded by the contacting area of case and disk seat, perhaps cuted by linear contacting area, linear contacting area can not preserve solid particle, thereby make sealed combination valve in time close, high -low pressure UNICOM has been avoided, the diverting agent that carries the large granule passes through easily, the emergence of stifled pump phenomenon has been avoided, satisfy the diverting agent and poured into construction requirements into. This application still discloses a plunger pump fluid end and a plunger pump that contains this sealed combination valve.
Description
Technical field
The utility model relates to oilfield machinery engineering liquor pump technical field, particularly a kind of seal combination valve of hydraulic end of plunger pump.Also relate to a kind of hydraulic end of plunger pump and the plunger pump that comprise sealing combination brake switch and proporting.
Background technique
In oil development operation process, especially the exploitation of shale gas, the temporary stall of pressure break is the technical measures in pressing crack construction operation to yield-increasing technology, this technology is exactly that diverting agent good for proportioning is injected underground rock stratum by high pressure pump truck, diverting agent forms temporary transient shutoff to rock stratum intrinsic fracture or man-made fracture, force the man-made fracture turning to formation new in other local crack, maintain again the connectedness of primary fracture, change gas-bearing formation infiltration displacement rule, add new infiltrating area, to reach the object of shale gas volume increase.
The filing provision of diverting agent is high pressure pump truck, and the key components of pump truck are the reciprocating high-pressure plunger pumps producing high pressure, and it is made up of power end and fluid end two-part.The rotary motion of live axle is mainly converted to the to-and-fro motion of plunger by power end, and the fluid end being connected to plunger mainly realizes the cyclically-varying of its cavity volume by the to-and-fro motion of plunger and the switch of valve.Existing fluid end is mainly made up of clack box, valve valve (valve valve is a kind of one-way valve), plunger, sealed packing, spring and spring seat etc.Clack box is made up of suction valve hole, discharge valve hole, plunger hole and blanking cover hole etc., sucks valve hole and discharge in valve hole to be all provided with valve valve.In induction stroke, plunger is extracted out along plunger hole, and the pressure of clack box inner chamber declines rapidly, discharges valve valve and closes, and sucks valve valve and opens, and the pressure reduction sucked inside and outside valve valve causes liquid to enter rapidly clack box inner chamber; At discharge stroke, suck valve valve and close, discharge valve valve and open, clack box fluid pressure increases gradually, opens, fluid pump is sent to high pressure exhaust manifold until discharge valve valve.
Valve valve is specifically made up of valve valve body and valve valve seat, sealed by conical ring sealing surface between valve valve body and valve valve seat, the width of sealing surface is between 12mm ~ 18mm, owing to comprising the irregular solid particle of 1mm to 8mm in diverting agent, in work progress, using high pressure pump truck to carry out infusion adds fashionable, the sealing surface of the valve valve of hydraulic end of plunger pump is very easily empty by oarse-grained diverting agent pad, valve valve is caused not close in time, high low pressure is caused to be communicated with, high pressure liquid stream is caused to enter low-pressure line, cause fracturing blender truck auger, rear pump, pipeline is all by solid material (fracturing sand in fracturing fluid, fiber, stifled particle etc. temporarily) block, low-pressure line is caused to sprain time serious quick-fried, even hurt sb.'s feelings, cause security incident, construction cannot be continued.
In sum, the valve valve how solving hydraulic end of plunger pump is easily empty by diverting agent pad, and the problem that cannot close in time, becomes those skilled in the art's problem demanding prompt solution.
Model utility content
In view of this, the purpose of this utility model is the seal combination valve providing a kind of hydraulic end of plunger pump, to prevent valve empty by diverting agent pad, cannot close in time.
Another object of the present utility model is to provide a kind of hydraulic end of plunger pump comprising above-mentioned seal combination valve, to ensure normally pumping into and pumping of diverting agent.
Another object of the present utility model is to provide a kind of plunger pump comprising above-mentioned hydraulic end of plunger pump.
For achieving the above object, the utility model provides following technological scheme:
A seal combination valve for hydraulic end of plunger pump, comprises spool, valve seat and leading truck; Sealing configuration between described valve seat and described spool is that line contact seals; The dead in line of the axis of described leading truck and described valve seat, described spool, for leading, described spool moves along the axis of described valve seat relative to described valve seat.
Preferably, in above-mentioned seal combination valve, described valve seat offers valve port, described leading truck is arranged in described valve port and also can moves along the axis of described valve seat in described valve port, described leading truck is fixedly connected with described spool, and the end edge line contact of described spool and described valve port seals.
Preferably, in above-mentioned seal combination valve, for being convex in curved surface with the surface of contact of described valve port line contact on described spool, described valve port be that convex annular is to curved surface with the end edge of described spool line contact.
Preferably, in above-mentioned seal combination valve, described valve seat comprises cylindrical seat, step hole is provided with in described cylindrical seat, described spool is spherical valve core, and described leading truck is cage type straight barrel, and the threaded one end of described cage type straight barrel is connected in described cylindrical seat, described spherical valve core is radially positioned in described cage type straight barrel in the shaft section of described cage type straight barrel, and described spherical valve core can seal with described step hole line contact.
Preferably, in above-mentioned seal combination valve, some struts that described cage type straight barrel comprises two ends and is fixedly connected between two described ends.
Preferably, in above-mentioned seal combination valve, described cage type straight barrel close end, one end be provided with can with the rubber pier of described spherical valve core Elastic Contact, for bumper and absorbing shock.
Preferably, in above-mentioned seal combination valve, described valve seat also comprises seal holder ring, described seal holder ring to be arranged in described cylindrical seat and with the end face axial aligned contact of described step hole; The inner ring edge of described seal holder ring is used for and the sealing of described spherical valve core line contact.
Preferably, in above-mentioned seal combination valve, between the outer ring of described seal holder ring and the inwall of described cylindrical seat, be also provided with seal ring.
The utility model additionally provides a kind of hydraulic end of plunger pump, comprise valve housing, plunger, suck one-way valve and discharge one-way valve, described valve housing offers plunger hole, inlet hole and tap hole, described plunger slides and is arranged in described plunger hole, described suction one-way valve is seal-installed in described inlet hole, described discharge one-way valve is seal-installed in described tap hole, described suction one-way valve and described discharge one-way valve are the seal combination valve described in above-mentioned any one, for suction seal combination brake switch and proporting and discharge seal combination valve, the spool of described seal combination valve is connected with described valve housing by Flexible Connector, to abut with described valve seat for making described spool and seal, the unlatching movement direction of the spool of described suction seal combination brake switch and proporting points to described valve housing inside, the unlatching movement direction of the spool of described discharge seal combination valve points to the outside of described valve housing.
The utility model additionally provides a kind of plunger pump, comprises fluid end, and described fluid end is above-mentioned hydraulic end of plunger pump.
Compared with prior art, the beneficial effects of the utility model are:
In the seal combination valve of the hydraulic end of plunger pump that the utility model provides, the sealing configuration between spool and valve seat is line contact sealing, and the movement of spool opposite valve seat is led by leading truck, and the axis of spool is overlapped all the time with the axis of valve seat.Compared with adopting valve valve with the one-way valve of fluid end in prior art, sealing configuration due to valve valve is face sealing, and the width of sealing surface is in 12mm ~ 18mm, the area of sealing surface is larger, large solid particle in diverting agent easily pads between valve valve body and two sealing surfaces of valve valve seat, make Fa Er valve body can not contact sealing in time with the sealing surface of valve valve seat, cause fluid end not close in time.And the spool of seal combination valve in the utility model and valve seat adopt line contact sealing configuration, therefore, when spool opposite valve seat moves closedown, even if the large particle solid material of diverting agent enters the line contact position between spool and valve seat, also can be extruded by the contact position of spool and valve seat, or blocked by line contact position, solid particle can not be retained in line contact position, thus corresponding seal combination valve all can be made to close in time in suction and discharge process, ensure that the normal increase and decrease of fluid end internal volume pressure, avoid high low pressure UNICOM, carry oarse-grained diverting agent and pass through plunger pump smoothly under cavity volume negative pressure and positive pressure, avoid the generation of stifled pump phenomenon, meet diverting agent and inject construction requirement.
The hydraulic end of plunger pump that the utility model provides have employed the seal combination valve in the utility model, therefore, it is possible to close sealing in time, avoids high low pressure and is communicated with, ensure that passing through smoothly of diverting agent.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of a kind of hydraulic end of plunger pump that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the enlarged diagram of the seal combination valve in a kind of hydraulic end of plunger pump of part A in Fig. 1;
The structural representation of the another kind of seal combination valve that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the decomposition texture schematic diagram of the seal combination valve in Fig. 3;
Fig. 5 is the C-C schematic cross-section in Fig. 4.
Wherein, 1 be valve housing, 2 be capping, 3 be suction seal combination brake switch and proporting for discharging seal combination valve, 4,5 be liquid entering hole, 6 be Flexible Connector, 7 be plunger seal assembly, 8 be plunger;
01 be spool, 02 be valve seat, 021 be seal holder ring, 022 be cylindrical seat, 023 be valve port, 024 be step hole, 03 be leading truck, 031 be strut, 04 be seal ring, 05 be screw, 06 for rubber pier.
Embodiment
Core of the present utility model there is provided a kind of seal combination valve of hydraulic end of plunger pump, prevents valve empty by the large particle solid matter backing strap in diverting agent, can close in time, avoids high low pressure and is communicated with.
The utility model additionally provides a kind of hydraulic end of plunger pump comprising sealing combination brake switch and proporting, can close in time, avoids high low pressure and is communicated with.
The utility model additionally provides a kind of plunger pump comprising this hydraulic end of plunger pump, meets the requirement of diverting agent implant operation.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to shown in Fig. 2-Fig. 4, the utility model embodiment provides a kind of seal combination valve of hydraulic end of plunger pump, and hereinafter referred to as seal combination valve, it comprises spool 01, valve seat 02 and leading truck 03; Wherein, the sealing configuration between valve seat 02 and spool 01 is that line contact seals; The dead in line of the axis of leading truck 03 and valve seat 02, spool 01, moves for the axis opposite valve seat 02 of Pilot poppet 01 along valve seat 02, ensures that spool 01 contacts with valve seat 02 when sealing and can not offset, improves airtight quality.
The spool 01 of above-mentioned seal combination valve and the sealing configuration of valve seat 02 are line contact sealing, namely the position that spool 01 contacts with valve seat 02 is a line, contact as face seals and the width of sealing surface is compared with 12mm ~ 18mm with the sealing of valve valve in prior art, seal combination valve in the utility model is when cutting out, large granular materials in diverting agent can not pad between spool 01 and the line contact position of valve seat 02, gap can not be propped up in the sealing contact position of spool 01 and valve seat 02, but large granular materials can be extruded by the line contact position of spool 01 and valve seat 02, or large granular materials is blocked by the line contact position of spool 01 and valve seat 02, thus spool 01 and valve seat 02 can close sealing in time, the high low pressure at seal combination valve two ends is disconnected, plunger pump fluid end cavity volume pressure in suction and discharge process is made normally to increase and reduce, diverting agent can quickly move through plunger pump in time, avoid high pressure liquid stream and enter low-pressure line, cause fracturing blender truck auger, rear pump, pipeline is all by solid material (fracturing sand in fracturing fluid, fiber, stifled particle etc. temporarily) block, more low-pressure line can not be caused to sprain quick-fried, even hurt sb.'s feelings, security incident can not be caused, ensure that construction speed.
As shown in Figure 2, the utility model provides a kind of concrete seal combination valve, the valve seat 02 of seal combination valve offers through valve port 023, leading truck 03 is arranged in valve port 023, the peripheral dimension of leading truck 03 and the interior shape size of valve port 023 are coincide, leading truck 03 can be made to move along the axis of valve seat 02 in valve port 023, one end of leading truck 03 is fixedly connected with one end of spool 01, the axis of spool 01 and the dead in line of leading truck 03, therefore, along with the movement of leading truck 03 in valve port 023, achieve spool 01 opposite valve seat 02 to move along the axis of valve seat 02, when spool 01 is near valve seat 02, spool 01 seals with edge, one end line contact of valve port 023.Leading truck 03 is frame structure, and diverting agent can flow through leading truck 03, and after spool 01 is away from valve seat 02, diverting agent can enter from the import of seal combination valve, to flow through after leading truck 03 from the outlet of seal combination valve out.The movement of leading truck 03 pair of spool 01 serves the effect of guiding, ensure that spool 01 seals with the contact of valve seat 02 and does not offset, there will not be gap, improve sealability.
Further, as shown in Figure 2, the line contact sealing configuration of the present embodiment to spool 01 and valve seat 02 is optimized, for being convex in curved surface with the surface of contact of valve port 023 line contact on spool 01, namely curved surface is outstanding to the periphery of spool, valve port 023 with the end edge of spool 01 line contact be convex annular to curved surface, namely an end margin of valve port 023 is the curved surface of annular, and curved surface protrudes to the outside at valve port 023 edge.When then the convex convex annular to curved surface and valve seat 02 of spool 01 is to curved face contact, form ring-type line contact, outwards formed in the both sides of the linear contact position of ring-type and gradually draw together space, therefore, large particle solid material is when entering seal combination valve, the large particle solid material being positioned at line contact position can be extruded by spool 01 and the close to each other of valve seat 02, even if large particle solid material pads in linear contact position once in a while, because the area of contact at line contact position is very little, under squeezing action between spool 01 and valve seat 02, large granular materials is truncated, thus make the line contact position of spool 01 and valve seat 02 can not there is large particle solid material, achieve the timely closedown sealing of spool 01 and valve seat 02.
As optimization, as shown in Figure 2, the shape of spool 01 is drum shaped body, and namely the end of spool 01 is plane, and periphery wall is elliposoidal face or spherical, thus obtains convex in curved surface.Valve port 023 1 end margin of valve seat 02 is arc-shaped transitional surface, obtains convex annular to curved surface, and the maximum cross-section diameter of spool 01 is greater than the diameter of valve port 023, thus the convex annular of the convex surface of spool 01 and valve port 023 can be made to curved surface line contact.Certainly, spool 01 can also be other shapes, as long as spool 01 has convex in curved surface, valve seat 02 has convex annular to curved surface.Or valve seat 02 has convex annular to curved surface, and spool 01 is cylindrical shape, a cylindrical end margin seals to the same line contact that can realize of curved surface with the convex annular of valve seat 02.Or spool 01 is cylindrical shape, the sealing surface of valve seat is inclined-plane, and a cylindrical end margin and inclined-plane form line contact and seal.Again or, the valve port edge of valve seat is right angle, and the contact end face of spool is inclined-plane, can realize equally line contact sealing.
As shown in Figure 3 and Figure 4, present embodiments provide another kind of seal combination valve, valve seat 02 comprises cylindrical seat 022, step hole 024 is provided with in cylindrical seat 022, spool 01 is spherical valve core, leading truck 03 is cage type straight barrel, the threaded one end of cage type straight barrel is connected in cylindrical seat 022, maintain static, the inside of cage type straight barrel communicates with outside, spherical valve core is placed in cage type straight barrel, and spherical valve core is radially positioned in cage type straight barrel in the shaft section of cage type straight barrel, namely spherical valve core can only move along the axis of cage type straight barrel, the axis of cage type straight barrel and the dead in line of valve seat 02, the diameter of spherical valve core is greater than the edge diameter of step hole 024, spherical valve core can seal with the edge line contact of step hole 024.
Can find out, cage type straight barrel is fixed leading truck 03, and spherical valve core is spacing with under axis guide effect in the radial direction of cage type straight barrel, and the axis along valve seat 02 moves around, and sphere and step hole 024 edge of spherical valve core form line contact.By the guiding of cage type straight barrel, the contact of spherical valve core and step hole 024 is sealed can not be offset, and ensure that sealability.Valve seat 02 in the present embodiment utilizes the spherical of the square edge of step hole 024 and spool 01 to realize line contact and seals.
The present embodiment is optimized cage type straight barrel, some struts 031 that cage type straight barrel comprises two ends and is fixedly connected between two ends, the end, one end of cage type straight barrel is uncovered, spherical valve core can pass in and out cage type straight barrel, the other end is not uncovered, can be closed end, for stopping that spherical valve core passes in and out.The quantity of strut 031 is 3 ~ 6, is four struts 031 in Fig. 5, moves radially as long as can play restriction spherical valve core and to be inside and outsidely communicated with.
During specific works, when spherical valve core and step hole 024 line contact, seal combination valve cuts out, when spherical valve core is away from step hole 024, seal combination valve is opened, diverting agent is seen by the gap between spherical valve core and step hole 024, and flows out from the space between the strut 031 of cage type straight barrel.
Because cage type straight barrel mostly is metal construction, and spherical valve core moves in cage type straight barrel, can impact the end of cage type straight barrel unavoidably, cause vibrations, use for a long time, easily damage.As shown in Figure 3 and Figure 4, for this reason, seal combination valve in the present embodiment also comprises the rubber pier 06 of the end, one end closed being arranged at cage type straight barrel, spherical valve core is when the closed end of cage type straight barrel, directly and rubber pier 06 making contact, carry out bumper and absorbing shock by rubber pier 06, reduce the damage of cage type straight barrel and spherical valve core.
Further, in order to realize the better sealing of spherical valve core and valve seat, as shown in Figure 3 and Figure 4, valve seat 02 in the present embodiment also comprises seal holder ring 021, seal holder ring 021 to be arranged in cylindrical seat 022 and with the end face axial aligned contact of step hole 024, seal holder ring 021 is between cage type straight barrel and the end face of step hole 024, and the uncovered end of cage type straight barrel is crimped on the end face of seal holder ring 021, and the inner ring edge of seal holder ring 021 is used for and the sealing of spherical valve core line contact.Because the uncovered end of cage type straight barrel is threaded with cylindrical seat 022, sealing effect is bad, therefore, arranges seal holder ring 021 between cage type straight barrel and the step hole 024 of cylindrical seat 022, is stashed threaded connection place by seal holder ring 021; In addition, can be regulated the precession degree of depth of cage type straight barrel by the seal holder ring 021 arranging different heights, the degree of depth of cage type straight barrel precession cylindrical seat 022 is darker, then spherical valve core is less away from the distance at the inner ring edge of seal holder ring 021, the maximum opening that seal combination valve is opened is less, then the discharge value restriction of diverting agent is less, otherwise, then larger.Therefore, seal holder ring 021 also has the effect regulating discharge value restriction.
Further, in order to improve sealability, as shown in Figure 3, seal ring 04 is also provided with between the outer ring of the seal holder ring 021 in the present embodiment and the inwall of cylindrical seat 022.
As shown in Figure 1, the utility model embodiment still provides a kind of hydraulic end of plunger pump, comprise valve housing 1, plunger 8, suck one-way valve and discharge one-way valve, valve housing 1 offers plunger hole, inlet hole and tap hole, plunger 8 slides and is arranged in plunger hole, and sealed by plunger seal assembly 7, sucking one-way valve is seal-installed in inlet hole, discharging one-way valve is seal-installed in tap hole, wherein, suction one-way valve and discharge one-way valve are the seal combination valve described by above whole embodiment, be respectively suction seal combination brake switch and proporting 4 and discharge seal combination valve 3, the spool 01 of seal combination valve is connected with valve housing 1 by Flexible Connector 6, Flexible Connector 6 is preferably Compress Spring, the two ends of Compress Spring are connected on spool 01 and valve housing 1 respectively, for applying active force to spool 01, spool 01 is abutted with valve seat 02 seal, the unlatching movement direction of the spool 01 of suction seal combination brake switch and proporting 4 points to valve housing 1 inside, the unlatching movement direction of discharging the spool 01 of seal combination valve 3 points to the outside of valve housing 1.
Working principle and the working procedure of above-mentioned hydraulic end of plunger pump are: be described for the seal combination valve in Fig. 2, before construction, suction seal combination brake switch and proporting 4 is seal-installed in the inlet hole of valve housing 1, particularly, sealed by seal ring 04 between the outer wall and the hole wall of inlet hole of valve seat 02; The unlatching movement direction of the spool 01 of suction seal combination brake switch and proporting 4 points to the inside of valve housing 1, and one end of spool 01 is connected with valve housing 1 inwall by Compress Spring; Discharge seal combination valve 3 is seal-installed in the tap hole of valve housing 1, is also sealed by seal ring 04; The unlatching movement direction of discharging the spool 01 of seal combination valve 3 points to the inside of valve housing 1, and one end of spool 01 is connected with the capping 2 of installing afterwards by Compress Spring.Plunger 8 is adjusted to the correct position of plunger hole.
During construction, be described with direction shown in Fig. 1, plunger 8 is moved to the left, fluid end cavity volume volume increases, in negative pressure state in cavity volume, now, the spool 01 of discharging seal combination valve 3 seals with its valve seat 02 line contact under the elastic force and suction function of Compress Spring, namely closed condition is in, pressure due to negative pressure is greater than the elastic force of Compress Spring, then the spool 01 of suction seal combination brake switch and proporting 4 is mobile to valve housing 1 inside, away from valve seat 02, namely open, the diverting agent carrying large particle solid material enters in hydraulic end of plunger pump by liquid entering hole 5 from suction seal combination brake switch and proporting 4, complete an imbibition process.
Plunger 8 moves right, fluid end cavity volume volume reducing, cavity volume internal pressure increases, now, the spool 01 of suction seal combination brake switch and proporting 4 seals with its valve seat 02 line contact under Compress Spring and volume pressure effect, namely be in closed condition, because volume pressure is greater than the elastic force of Compress Spring, then the spool 01 of discharging seal combination valve 3 moves to the outside of valve housing 1, away from valve seat 02, namely open, diverting agent discharges hydraulic end of plunger pump by discharging seal combination valve 3, completes a discharge opeing process.
Along with the left and right of plunger 8 in plunger hole moves back and forth, diverting agent constantly sucks and discharges, because the spool 01 of seal combination valve and valve seat 02 are line contact sealing, the large particle solid material in diverting agent or be extruded, or be truncated, the line contact position at spool 01 and valve seat 02 can not be padded, avoid high low pressure to be communicated with, therefore, diverting agent easily passes through hydraulic end of plunger pump, avoid the generation that pump blocks up phenomenon, reach the requirement that diverting agent injects construction.
The utility model embodiment still provides a kind of plunger pump, comprises power end and fluid end, wherein, and the hydraulic end of plunger pump of fluid end described by above embodiment.Plunger pump power end operates, and drives the piston reciprocation of fluid end to move, realizes suction and the discharge of diverting agent, completes diverting agent and injects constructing operation.Owing to have employed above-mentioned hydraulic end of plunger pump, therefore, there will not be the high low pressure of fluid end to be communicated with phenomenon, thus ensure that the smooth circulation of diverting agent.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a seal combination valve for hydraulic end of plunger pump, is characterized in that, comprises spool (01), valve seat (02) and leading truck (03); Sealing configuration between described valve seat (02) and described spool (01) is that line contact seals; The dead in line of the axis of described leading truck (03) and described valve seat (02), described spool (01), for leading, described spool (01) moves along the axis of described valve seat (02) relative to described valve seat (02).
2. seal combination valve according to claim 1, it is characterized in that, described valve seat (02) offers valve port (023), described leading truck (03) is arranged in described valve port (023) and also can moves along the axis of described valve seat (02) in described valve port (023), described leading truck (03) is fixedly connected with described spool (01), and described spool (01) seals with the end edge line contact of described valve port (023).
3. seal combination valve according to claim 2, it is characterized in that, for being convex in curved surface with the surface of contact of described valve port (023) line contact on described spool (01), described valve port (023) be that convex annular is to curved surface with the end edge of described spool (01) line contact.
4. seal combination valve according to claim 1, it is characterized in that, described valve seat (02) comprises cylindrical seat (022), step hole (024) is provided with in described cylindrical seat (022), described spool (01) is spherical valve core, described leading truck (03) is cage type straight barrel, the threaded one end of described cage type straight barrel is connected in described cylindrical seat (022), described spherical valve core is radially positioned in described cage type straight barrel in the shaft section of described cage type straight barrel, described spherical valve core can seal with described step hole (024) line contact.
5. seal combination valve according to claim 4, is characterized in that, described cage type straight barrel comprises two ends and is fixedly connected on the some struts (031) between two described ends.
6. seal combination valve according to claim 5, is characterized in that, described cage type straight barrel close end, one end be provided with can with the rubber pier (06) of described spherical valve core Elastic Contact, for bumper and absorbing shock.
7. seal combination valve according to claim 4, it is characterized in that, described valve seat (02) also comprises seal holder ring (021), described seal holder ring (021) to be arranged in described cylindrical seat (022) and with the end face axial aligned contact of described step hole (024); The inner ring edge of described seal holder ring (021) is used for and the sealing of described spherical valve core line contact.
8. seal combination valve according to claim 7, is characterized in that, is also provided with seal ring (04) between the outer ring of described seal holder ring (021) and the inwall of described cylindrical seat (022).
9. a hydraulic end of plunger pump, comprise valve housing (1), plunger (8), suck one-way valve and discharge one-way valve, (1) offers plunger hole to described valve housing, inlet hole and tap hole, described plunger (8) slides and is arranged in described plunger hole, described suction one-way valve is seal-installed in described inlet hole, described discharge one-way valve is seal-installed in described tap hole, it is characterized in that, described suction one-way valve and described discharge one-way valve are the seal combination valve as described in any one of claim 1-7, be respectively suction seal combination brake switch and proporting (4) and discharge seal combination valve (3), the spool (01) of described seal combination valve is connected with described valve housing (1) by Flexible Connector (6), to abut with described valve seat (02) for making described spool (01) and seal, the unlatching movement direction of the spool (01) of described suction seal combination brake switch and proporting (4) points to described valve housing (1) inside, the unlatching movement direction of the spool (01) of described discharge seal combination valve (3) points to the outside of described valve housing (1).
10. a plunger pump, comprises fluid end, it is characterized in that, described fluid end is hydraulic end of plunger pump according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887043.6U CN205101219U (en) | 2015-11-09 | 2015-11-09 | Plunger pump, plunger pump fluid end and sealed combination valve thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520887043.6U CN205101219U (en) | 2015-11-09 | 2015-11-09 | Plunger pump, plunger pump fluid end and sealed combination valve thereof |
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| CN205101219U true CN205101219U (en) | 2016-03-23 |
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| CN201520887043.6U Active CN205101219U (en) | 2015-11-09 | 2015-11-09 | Plunger pump, plunger pump fluid end and sealed combination valve thereof |
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| CN105952633A (en) * | 2016-07-07 | 2016-09-21 | 天津市海盛泵业制造有限公司 | Straight-through combination valve applied to high-pressure reciprocation plunger pump hydraulic end |
| CN107956664A (en) * | 2017-12-05 | 2018-04-24 | 宁波合力机泵股份有限公司 | A kind of detergent slurry delivery pump fluid end |
| CN108051577A (en) * | 2017-12-05 | 2018-05-18 | 徐州果姿电子商务有限公司 | A kind of animal blood component detection apparatus |
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2015
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| CN107956664A (en) * | 2017-12-05 | 2018-04-24 | 宁波合力机泵股份有限公司 | A kind of detergent slurry delivery pump fluid end |
| CN108051577A (en) * | 2017-12-05 | 2018-05-18 | 徐州果姿电子商务有限公司 | A kind of animal blood component detection apparatus |
| CN108051577B (en) * | 2017-12-05 | 2019-10-11 | 陕西宝马生物科技有限公司 | A kind of animal blood component detection apparatus |
| CN108799038A (en) * | 2018-06-06 | 2018-11-13 | 广州富森环保科技股份有限公司 | A kind of super-high-pressure plunger pump fluid end |
| CN108799038B (en) * | 2018-06-06 | 2024-05-07 | 广州富森环保科技股份有限公司 | Ultrahigh pressure plunger pump fluid end |
| CN113123962A (en) * | 2019-12-31 | 2021-07-16 | 中石化石油工程技术服务有限公司 | Ball cage type one-way valve and plunger pump |
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Effective date of registration: 20180723 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: Down-hole job that requires special skills company of Central Plains petroleum works Co., Ltd of China Petrochemical Industry Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100028 Chaoyang District, Beijing Hui Xin Street 6, Twelfth level. Co-patentee before: Down-hole job that requires special skills company of Central Plains petroleum works Co., Ltd of China Petrochemical Industry Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |