CN203394736U - Fluid end device for plunger pump - Google Patents
Fluid end device for plunger pump Download PDFInfo
- Publication number
- CN203394736U CN203394736U CN201320492989.3U CN201320492989U CN203394736U CN 203394736 U CN203394736 U CN 203394736U CN 201320492989 U CN201320492989 U CN 201320492989U CN 203394736 U CN203394736 U CN 203394736U
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- head body
- spool
- plunger
- pump head
- valve
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- Withdrawn - After Issue
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Abstract
The utility model relates to a fluid end device for a plunger pump. The fluid end device comprises a pump head body (3), a combined cartridge valve (12), a packing box (7) and a plunger (10), wherein a suction inlet and a discharge port are formed in the pump head body (3); the combined cartridge valve (12) is arranged in the pump head body (3); a fluid inlet cavity (1213) communicated with the suction inlet and a fluid discharge cavity (1215) communicated with the discharge port are formed between the pump head body (3) and the combined cartridge valve (12); the end face of the packing box (7) clings to the pump head body (3); the plunger (10) can reciprocally move in the packing box (7); the combined cartridge valve (12) comprises a pressing sleeve (1201), a valve element (1206), a suction valve (1208) and a discharge valve (1205). According to the fluid end device, the flow passing performance of the combined cartridge valve and the guide performance among the discharge valve, the suction valve and the valve element are improved; in addition, the fluid end device is simple and compact in structure, high in fluid end volume efficiency, convenient to assemble and disassemble and high in maintenance and replacement speed, and the pump head body is small in overall size.
Description
Technical field
The utility model relates to reciprocating plunger pump field, more particularly, relates to a kind of hydraulic end of plunger pump device.
Background technique
The structure of reciprocating plunger pump comprises two-part, and a part is fluid end, and another part is power end, and fluid end is to carry liquid, mechanical energy is converted to the pressure energy of liquid, is the working portion of reciprocating high-pressure plunger pump.Current common hydraulic end of plunger pump, its valve component is split type valve group and combination brake switch and proporting group.
The fluid end setting type of split type valve group has traditional " L " type, anti-" L " type, " V " type, " Y " type, "+" type fluid end.First, suction valve and the expulsion valve of split-body valve group are arranged apart, and part is many, and complex structure is not easy to assemble, cause and safeguard replacing inconvenience; Secondly, have the phase perforation intersecting in pump head body pressure alternating cavity, during pump work, under alternating pressure frequently, pump head body stress great position is easily impaired, easily reduces its working life; The 3rd, between suction valve, expulsion valve and plunger, can form larger clearance volume, volumetric efficiency still has room for promotion.
Existing combination valve type fluid end has following shortcoming, one, the area of passage of combination brake switch and proporting group is little, for augmented flow need to increase valve plate lift, thereby cause closing velocity, acceleration, impact force, the noise of valve plate and close retardation angle and all can strengthen, have a strong impact on valve group working life and volumetric efficiency; Its two, fluid end all parts connects by many groups bolt, dismounting inconvenience; Its three, combination brake switch and proporting axial dimension is large, causes fluid end pump head body size large, weight increases.
Therefore in the urgent need to a kind of simple and compact for structure, volume is little, safe and reliable, easy accessibility, maintenance rapidly quick, cost is low, the novel combination brake switch and proporting plug-in type hydraulic end of plunger pump device of long service life.
Model utility content
The technical problems to be solved in the utility model is, a kind of hydraulic end of plunger pump device of simple and compact for structure, easy accessibility is provided.
The utility model solves the technological scheme that its technical problem adopts: construct a kind of hydraulic end of plunger pump device, comprise pump head body, plug-in type combination brake switch and proporting, packing box and plunger, described pump head body is provided with suction port and exhaust port, described plug-in type combination brake switch and proporting is arranged in described pump head body, forms the admission chamber being communicated with described suction port and the exhaust chamber being communicated with described exhaust port between described pump head body and described plug-in type combination brake switch and proporting; The end face of described packing box is close to described pump head body, and described plunger can move in described packing box;
Described plug-in type combination brake switch and proporting comprises gland, spool, suction valve and expulsion valve, one end of described spool compresses by described gland, described spool is provided with discharge inclined hole, described gland is provided with flowing hole, described suction valve is inserted into described spool radially inner side, described expulsion valve is sleeved on described spool radial outside, and described suction valve and expulsion valve coordinate with the inside and outside sealing surface at described discharge inclined hole place respectively;
Between described spool and suction valve, be provided with suction spring, between described gland and expulsion valve, be provided with discharge spring;
The end face of described spool contacts with described packing box, and described suction valve, described spool, described plunger and described packing box form active chamber;
When plunger moves the volume increase that causes active chamber, active chamber pressure reduces, and sucks spring pressurized, and suction valve is opened under hydraulic pressure, and liquid enters in active chamber by suction port and the flowing hole on gland of described pump head body; When plunger moves while causing the volume of active chamber to reduce, active chamber pressure increases, and suction valve is at hydraulic pressure and suck under the effect of spring restoring force and close, and discharges spring pressurized, and expulsion valve is opened, and the liquid in active chamber flow to the exhaust port of pump head body; When plunger stops moving, expulsion valve cuts out under the effect of discharge spring restoring force.
In hydraulic end of plunger pump device described in the utility model, one end radial outside of described suction valve is provided with the check ring being threaded with it, the other end coordinates with the inner sealing surface at described discharge inclined hole place, and keep out respectively on described check ring and described spool at the two ends of described suction spring.
In hydraulic end of plunger pump device described in the utility model, described pump head body is run through by short rod, and described short rod two ends are provided with screw thread, and one end is fixed on power end end plate, and the other end is fastened on described pump head body on described power end end plate by nut.
In hydraulic end of plunger pump device described in the utility model, described gland is fixed by supported flange, described supported flange and described pump head body are connected by long draw, described long draw two ends are provided with screw thread, one end is fixedly connected with described power end end plate, and the other end is fastened to described supported flange on described pump head body by nut.
In hydraulic end of plunger pump device described in the utility model, described packing box and described power end end plate Spielpassung, described packing box outer wall is provided with positioning step, and the two ends of described positioning step contact with power end end plate with described pump head body respectively.
In hydraulic end of plunger pump device described in the utility model, between described plunger and described packing box, be provided with black box, described black box is fixed by gland, and described gland is fixed on the end of described packing box.
In hydraulic end of plunger pump device described in the utility model, between described spool and packing box contact end face, be provided with seal ring.
In hydraulic end of plunger pump device described in the utility model, the mobile guide fitting surface of described suction valve and spool is cylinder, the mobile guide fitting surface of described expulsion valve and spool is cylinder, described suction valve is provided with sleeve pipe with holes, described sleeve pipe and spool inwall form guiding movement and coordinate, and described expulsion valve is provided with spool outer wall and forms the cylndrical surface that guiding movement coordinates.
In hydraulic end of plunger pump device described in the utility model, the end face contacting of described suction valve and spool is the conical surface, and the end face contacting of described expulsion valve and spool is the conical surface.
Implement hydraulic end of plunger pump device of the present utility model, there is following beneficial effect:
(1), by moving back and forth of plunger, realize imbibition and discharge opeing process, complete the function of carrying liquid, simple and compact for structure.
(2), plug-in type combination brake switch and proporting is arranged in pump head body as an integral plugged formula, suction valve and expulsion valve horizontal arrangement, adopt plug-in type structure, thus dismounting simple, keep in repair efficient and convenient.
(3), the utility model has improved the overcurrent performance of valve group and the steering capability between suction valve, expulsion valve and spool, the stroke of expulsion valve is short, its closing velocity, acceleration, impact force, noise and close retardation angle and all can reduce, valve body vibrations are reduced, extend working life, and volumetric efficiency improves.
(4), compare with existing level straight-through type combination brake switch and proporting, when plunger front end of the present utility model walks to front dead point, more near suction valve and expulsion valve, reduce greatly the clearance volume of fluid end, improved volumetric efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model hydraulic end of plunger pump device;
Fig. 2 is the plan view of the utility model hydraulic end of plunger pump device;
Fig. 3 is the structural representation of plug-in type combination brake switch and proporting;
Fig. 4 is the part exploded perspective view of plug-in type combination brake switch and proporting.
Embodiment
For technical characteristics of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As Figure 1-Figure 4, hydraulic end of plunger pump device of the present utility model comprises pump head body 3, plug-in type combination brake switch and proporting 12, packing box 7 and plunger 10.
Plug-in type combination brake switch and proporting 12 is arranged in pump head body 3, and the circular end surface of packing box 7 is close to pump head body 3, and plunger 10 can be in the interior movement of packing box 7.Between pump head body 3 and plug-in type combination brake switch and proporting 12, form the admission chamber 1213 being communicated with suction port and the exhaust chamber 1215 being communicated with exhaust port.In the present embodiment, plug-in type combination brake switch and proporting 12 one end contacts with packing box 7, and the other end is given prominence to pump head body end face 3mm, by supported flange 1, compresses, and is convenient to supported flange 1 by 12 compactings of plug-in type combination brake switch and proporting.In the present embodiment, short rod 2 and long draw 17 two ends are provided with screw thread, one end is all fixedly connected with power end end plate 11, wherein short rod 2 connects pump head body 3, the other end is fixed on pump head body 3 on power end end plate 11 by nut, short rod 2 connects supported flange 1 and pump head body 3, and the other end is fastened on supported flange 1 on pump head body 3 by nut.
Packing box 7 parts stretch in power end end plate 11, with power end end plate 11 Spielpassung, can guarantee the coaxality of plunger 10.On packing box 7 outer walls, be provided with positioning step, the two ends of positioning step contact with power end end plate 11 with pump head body 3 respectively, by short rod 2 and long draw 17 tensions, can realize the fixing of packing box 7.
Plug-in type combination brake switch and proporting 12 comprises gland 1201, spool 1206, suction valve 1208 and expulsion valve 1205.One end of spool 1206 compresses by gland 1201, spool 1206 is provided with a plurality of discharge inclined holes 1216, gland 1201 is provided with flowing hole, suction valve 1208 is inserted into spool 1206 radially inner sides, expulsion valve 1205 is sleeved on spool 1206 radial outsides, and suction valve 1208 and expulsion valve 1205 coordinate with the inside and outside sealing surface of discharging inclined hole 1216 places respectively.Between spool 1206 and suction valve 1208, be provided with and suck spring 1212, between gland 1201 and expulsion valve 1205, be provided with and discharge spring 1211.The end face of spool 1206 contacts with packing box 7, and suction valve 1208, spool 1206, plunger 10 and packing box 7 form active chamber 1214.
When plunger 10 moves the volume increase that causes active chamber 1214, active chamber 1214 pressure reduce, suck spring 1212 pressurizeds, suction valve 1208 is opened under hydraulic pressure, and liquid enters in active chamber 1214 by suction port and the flowing hole on gland 1201 of pump head body 3; When plunger 10 moves while causing the volume of active chamber 1214 to reduce, active chamber 1214 pressure increase, suction valve 1208 cuts out under the return action of hydraulic pressure and suction spring 1212, discharge spring 1211 pressurizeds, expulsion valve 1205 is opened, and the liquid in active chamber 1214 is flowed through and discharged the exhaust port of inclined hole 1216 and pump head body 3; When plunger 10 stops moving, expulsion valve 1205 cuts out under the restoring force effect of discharging spring 1211.Above-mentioned feed liquor discharge opeing process moves in circles, and completes the function that pump is carried liquid.
Further, in pump head body 3 chambeies, horizontal linear is arranged shoulder hole, is convenient to removing and installing of plug-in type combination brake switch and proporting 12.Suction port adopts endless track hole, increases imbibing hole area, has reduced pump head body 3 sizes.
Further, gland 1201 is fixed by supported flange 1.One end radial outside of suction valve 1208 is provided with the check ring 1203 being threaded with it, and the other end coordinates with the inner sealing surface at described discharge inclined hole 1216 places, and keep out respectively on check ring 1203 and spool 1206 at the two ends that suck spring 1212.The one end of discharging inclined hole 1216 communicates with active chamber 1214, feed liquor runner 1213 is the paths that formed by the flowing hole of gland 1201, ring runner and spool 1206 intermediate flow channel, and discharge opeing runner 1214 is to be communicated with by discharging inclined hole 1216 and ring runner the path forming.
Further, the mobile guide fitting surface of suction valve 1208 and spool 1206 is cylinder, the mobile guide fitting surface of expulsion valve 1205 and spool 1206 is cylinder, suction valve 1208 is provided with sleeve pipe with holes, sleeve pipe and spool 1206 inwalls form guiding movement and coordinate, and expulsion valve 1205 is provided with spool 1206 outer walls formation guiding movements and coordinates cylndrical surface.Preferably, the end face contacting of suction valve 1208 and spool 1206 is the conical surface, and the end face contacting of expulsion valve 1205 and spool 1206 is the conical surface, is the conical surface of 105 ° in the present embodiment.
Further, between plunger 10 and packing box 7, be provided with black box 8, black box 8 is fixing by gland 9, and gland 9 is fixed on the end of packing box 7.Between spool 1206 and packing box 7, be provided with seal ring 1207, between spool 1206 and pump head body 3, be provided with seal ring 1209, between gland 1201 and pump head body 3, be provided with seal ring 1202 seal rings 1204, between spool 1206 and gland 1201, be provided with seal ring 1210.
The utility model plug-in type combination brake switch and proporting 12 and packing box 7 Renewal process are as follows: dismounting combination brake switch and proporting, first unload supported flange 1, then with special tool, remove plug-in type combination brake switch and proporting 12, then take plug-in type combination brake switch and proporting 12 apart, change corresponding part, the order of assembling plug-in type combination brake switch and proporting 12 is contrary with disassembly sequence, but should repair the part burr that zero-suppresses before assembling, cleans up, is coated with appropriate lubricant oil; Dismounting plunger 10, sealing, remove supported flange 1, with special tool, removes plug-in type combination brake switch and proporting 12, unclamps the clip between small rod and plunger 10, from fluid end rear end, pulls out plunger 10, dismantles gland 9, by leading portion, takes out black box 8.
The utility model adopts plunger hole and pump barrel line style to arrange, suction pipe 13 is independently positioned at outside pump head body 3, and adopt novel plug-in type combination brake switch and proporting 12, compare existing hydraulic end of plunger pump, the liquid that produces high-pressure pulsating circulation is interior without cross friendship hole at active chamber 1214, to falling stress concentration, avoid pump head body 3 fatigue crackings to be of great benefit to, can make pump head body 3 reach feature wear-resistant, long service life, and the linear structure of plug-in type combination brake switch and proporting 12 reduces the clearance volume between plunger 10 and active chamber 1214, has improved volumetric efficiency.Novel plug-in assembled formula combination brake switch and proporting 12 structure compact, easy accessibility, whole valve body and additional device overall length thereof are little, make fluid end overall dimensions little, are conducive to reduce large scale multi-cylinder opposed type plunger pump length dimension, make its occupation of land space little.Expulsion valve 1205 lifts are short, are beneficial to and reduce valve body vibrations, extend pump valve working life.Because its structure is relatively simple, component are few, are therefore easy to dismounting, and dismounting and change suction pipe 13 is also very convenient rapid.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (9)
1. a hydraulic end of plunger pump device, it is characterized in that, comprise pump head body (3), plug-in type combination brake switch and proporting (12), packing box (7) and plunger (10), described pump head body (3) is provided with suction port and exhaust port, described plug-in type combination brake switch and proporting (12) is arranged in described pump head body (3), forms the admission chamber (1213) being communicated with described suction port and the exhaust chamber (1215) being communicated with described exhaust port between described pump head body (3) and described plug-in type combination brake switch and proporting (12); The end face of described packing box (7) is close to described pump head body (3), and described plunger (10) can move back and forth in described packing box (7);
Described plug-in type combination brake switch and proporting (12) comprises gland (1201), spool (1206), suction valve (1208) and expulsion valve (1205), one end of described spool (1206) compresses by described gland (1201), described spool (1206) is provided with discharges inclined hole (1216), described gland (1201) is provided with flowing hole, described suction valve (1208) is inserted into described spool (1206) radially inner side, described expulsion valve (1205) is sleeved on described spool (1206) radial outside, described suction valve (1208) and expulsion valve (1205) respectively with described discharge inclined hole (1216) locate in, external sealed face coordinates,
Between described spool (1206) and suction valve (1208), be provided with and suck spring (1212), between described gland (1201) and expulsion valve (1205), be provided with and discharge spring (1211);
The end face of described spool (1206) contacts with described packing box (7), and described suction valve (1208), described spool (1206), described plunger (10) and described packing box (7) form active chamber (1214);
When plunger (10) moves the volume increase that causes active chamber (1214), active chamber (1214) pressure reduces, suck spring (1212) pressurized, suction valve (1208) is opened under hydraulic pressure, and liquid enters in active chamber (1214) by suction port and the flowing hole on gland (1201) of described pump head body (3); When plunger (10) movement causes the volume of active chamber (1214) to reduce, active chamber (1214) pressure increases, suction valve (1208) cuts out under hydraulic pressure and the restoring force effect of suction spring (1212), discharge spring (1211) pressurized and cause expulsion valve (1205) to be opened, the liquid in active chamber (1214) flow to the exhaust port of pump head body (3); When plunger (10) stops moving, expulsion valve (1205) cuts out under the restoring force effect of discharge spring (1211).
2. hydraulic end of plunger pump device according to claim 1, it is characterized in that, one end radial outside of described suction valve (1208) is provided with check ring (1203), the other end is located inner sealing surface with described discharge inclined hole (1216) and is matched, and keep out respectively on described check ring (1203) and described spool (1206) at the two ends of described suction spring (1212).
3. hydraulic end of plunger pump device according to claim 1, it is characterized in that, described pump head body (3) is run through by short rod (2), described short rod (2) two ends are provided with screw thread, it is upper that one end is fixed on power end end plate (11), and the other end is fastened on described pump head body (3) on described power end end plate (11) by nut.
4. hydraulic end of plunger pump device according to claim 3, it is characterized in that, described gland (1201) is fixed by supported flange (1), described supported flange (1) and described pump head body (3) are connected by long draw (17), described long draw (17) two ends are provided with screw thread, one end is fixedly connected with described power end end plate (11), and the other end is fastened to described supported flange (1) on described pump head body (3) by nut.
5. hydraulic end of plunger pump device according to claim 4, it is characterized in that, described packing box (7) and described power end end plate (11) Spielpassung, described packing box (7) outer wall is provided with positioning step, and the two ends of described positioning step contact with power end end plate (11) with described pump head body (3) respectively.
6. hydraulic end of plunger pump device according to claim 1, it is characterized in that, between described plunger (10) and described packing box (7), be provided with black box (8), described black box (8) is fixing by gland (9), and described gland (9) is fixed on the end of described packing box (7).
7. hydraulic end of plunger pump device according to claim 1, is characterized in that, between described spool (1206) and packing box (7), is provided with seal ring (1207).
8. hydraulic end of plunger pump device according to claim 1, it is characterized in that, the mobile guide fitting surface of described suction valve (1208) and spool (1206) is cylinder, the mobile guide fitting surface of described expulsion valve (1205) and spool (1206) is cylinder, described suction valve (1208) is provided with sleeve pipe with holes, described sleeve pipe and spool (1206) inwall forms guiding movement and coordinates, and described expulsion valve (1205) is provided with spool (1206) outer wall and forms the cylndrical surface that guiding movement coordinates.
9. hydraulic end of plunger pump device according to claim 8, is characterized in that, the end face contacting of described suction valve (1208) and spool (1206) is the conical surface, and the end face contacting of described expulsion valve (1205) and spool (1206) is the conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492989.3U CN203394736U (en) | 2013-08-13 | 2013-08-13 | Fluid end device for plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492989.3U CN203394736U (en) | 2013-08-13 | 2013-08-13 | Fluid end device for plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394736U true CN203394736U (en) | 2014-01-15 |
Family
ID=49906271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492989.3U Withdrawn - After Issue CN203394736U (en) | 2013-08-13 | 2013-08-13 | Fluid end device for plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410721A (en) * | 2013-08-13 | 2013-11-27 | 中国石油化工集团公司 | Fluid end device of plunger pump |
| CN107165797A (en) * | 2017-07-19 | 2017-09-15 | 宁波合力机泵股份有限公司 | It is a kind of to optimize the reciprocating pump that power end is connected with fluid end |
-
2013
- 2013-08-13 CN CN201320492989.3U patent/CN203394736U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410721A (en) * | 2013-08-13 | 2013-11-27 | 中国石油化工集团公司 | Fluid end device of plunger pump |
| CN103410721B (en) * | 2013-08-13 | 2015-10-14 | 中石化石油工程机械有限公司 | Fluid end device of plunger pump |
| CN107165797A (en) * | 2017-07-19 | 2017-09-15 | 宁波合力机泵股份有限公司 | It is a kind of to optimize the reciprocating pump that power end is connected with fluid end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SINOPEC PETROLEUM ENGINEERING MACHINERY CO., LTD. Free format text: FORMER OWNER: SINOPEC GROUP Effective date: 20150107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100728 CHAOYANG, BEIJING TO: 430223 WUHAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150107 Address after: 430223, Hubei, East Lake province Wuhan New Technology Development Zone 77 Optics Valley Avenue, Optics Valley finance port, block A2, 12 Patentee after: Sinopec Petroleum Engineering Machinery Co., Ltd. Patentee after: Research Institute of SINOPEC Petroleum Engineering Machinery Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Research Institute of SINOPEC Petroleum Engineering Machinery Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |