CN206929071U - A kind of modified Valves in Fracturing Pumps - Google Patents
A kind of modified Valves in Fracturing Pumps Download PDFInfo
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- CN206929071U CN206929071U CN201720693660.1U CN201720693660U CN206929071U CN 206929071 U CN206929071 U CN 206929071U CN 201720693660 U CN201720693660 U CN 201720693660U CN 206929071 U CN206929071 U CN 206929071U
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- spring
- valve disc
- axis
- cylindrical
- cluster
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Abstract
The utility model discloses a kind of modified Valves in Fracturing Pumps, it is related to field of petroleum machinery.Including discharge cover, cluster spring, valve disc, sealing ring and valve seat, cylindrical spring of the described cluster spring including at least three sections of diameter differences, length not etc., and the axis of all cylindrical springs is respectively superposed；Described valve disc upper surface is provided centrally with the axis of guide；Cluster spring is placed on the upper surface of valve disc, and the axis of cluster spring overlaps with the axis of the axis of guide, the bottom of all cylindrical springs and the upper surface of valve disc, and the outermost layer spring top of cluster spring contacts with the lower surface of discharge cover.The beneficial effects of the utility model are：When valve disc lift is relatively low, the relatively low impact for advantageously reducing valve disc to valve seat of the rigidity of cluster spring, improve the service life of valve disc, when valve disc lift is higher, the rigidity of cluster spring is higher, reduce angle of lag, be advantageous to improve the volumetric efficiency of fracturing pump, be advantageous to improve the integral working of fracturing pump.
Description
Technical field
The utility model belongs to field of petroleum machinery, and in particular to a kind of Valves in Fracturing Pumps.
Background technology
With the increasingly reduction of petroleum resources, Oil And Gas Exploration And Development difficulty is increasing, the day of Low permeable oil and gas reservoirs
Benefit increases, the emergence of deep-well, ultradeep well so that fracture acidizing technique is more and more important in oil and gas development.Fracturing pump is
Core component in fracture acidizing equipment, extensive utilization and development with fracturing technology, field requirement fracturing pump bears higher
Pressure, bigger shock loading has a more preferable combination property, and wherein volumetric efficiency and service life are to weigh fracturing pump work
Make two important indicators of performance.
Because the condition of work of fracturing pump is very severe, the performance of pump valve greatly constrains fracturing pump integral working
Performance, the wherein seating velocity of valve disc influences obvious on the service life of pump valve, and the seating velocity of valve disc is bigger, and valve disc is to valve
The impact of seat is bigger, and with the cycle movement of plunger, the pressure in pump head body constantly changes, and pump valve is continuous in the course of the work
Keying, valve disc continuous high speed impact valve seat, research has shown that the fatigue impact of valve disc and valve base chamber destroy be that pump valve fails
Main cause, therefore the seating velocity for reducing pump valve will be greatly enhanced the service life of Valves in Fracturing Pumps；It is related through consulting
Documents and materials find that the unlatching of pump valve lags and closed the main reason for hysteresis is influence pressure break pump volumetric efficiency, therefore reduces
The angle of lag of Valves in Fracturing Pumps will greatly improve the volumetric efficiency of fracturing pump.
Found by the research to available data, spring rate is influenceed significantly on the service behaviour of pump valve, and spring rate is got over
Greatly, the seating velocity of valve disc is bigger；Spring rate is smaller, and the angle of lag of pump valve is bigger, and the volumetric efficiency of fracturing pump is lower.Therefore
For above the problem of propose a kind of scheme, i.e., smaller in the rigidity of the opening and closing stage spring of pump valve, now valve disc pair
The impact of valve seat is smaller；As the increase of lift, the rigidity of spring gradually increase after valve disc opening, process of the valve disc in closing
In, i.e., during valve disc lift moves to minimum point by peak, the decrease speed of valve disc is very fast, corresponding angle of lag compared with
It is small, while valve disc, when close to valve seat, spring force is smaller, and the seating velocity of valve disc is relatively low.The program is once realized will be very big
Raising fracturing pump volumetric efficiency and service life.
Existing Valves in Fracturing Pumps typically uses the cylindrical spring of constant rigidity so that pump valve is hit by a bullet in whole work process
Spring constant rigidity, it is unfavorable for the raising of fracturing pump overall performance.
Utility model content
Technical problem to be solved in the utility model, it is to be directed to above-mentioned technical deficiency, there is provided a kind of modified
Valves in Fracturing Pumps, the utility model change pattern of traditional pump valve using the cylindrical spring of constant rate, it is proposed that a kind of group
Spring is closed, the rigidity of the cluster spring changes with the change of valve disc lift；When valve disc lift is relatively low, cluster spring it is firm
Spend relatively low, spring force now is smaller, thus it is ensured that the seating velocity of valve disc is smaller, and then be advantageous to improve valve disc uses the longevity
Life；When valve disc lift is higher, the rigidity of cluster spring is higher, and spring force now is larger, can increase the acceleration of valve disc,
Accelerate the closure of valve disc, and then reduce angle of lag, improve the volumetric efficiency of fracturing pump.
The technical solution adopted in the utility model is：A kind of modified Valves in Fracturing Pumps, including discharge cover, combination bullet are provided
Spring, valve disc, sealing ring and valve seat, described discharge cover are cylindrical structure, and the lower surface for discharging cover is provided with circular cylindrical projection
Platform；Described cluster spring comprises at least the cylindrical spring of three sections of diameter differences, length not etc., the internal diameter and length of each cylindrical spring
Degree successively decreases successively from outside to inside, and the axis of all cylindrical springs is respectively superposed；Described valve disc upper surface is provided centrally with leading
To axle, the lower surface of valve disc is provided with guide grab；Cluster spring is placed on the upper surface of valve disc, and the axis of cluster spring is with leading
Overlapped to the axis of axle, the bottom of all cylindrical springs and the upper surface of valve disc, the outermost layer spring top of cluster spring
Contacted with the lower surface of discharge cover, and the axis for discharging cover overlaps with the axis of cluster spring；Sealing ring is socketed in the side of valve disc
Face；The guide grab of valve disc is placed on the upper surface of the inside of valve seat, sealing ring lower surface and valve seat, and the axis of valve disc with
The axis of valve seat overlaps.
Further optimize the technical program, a kind of lifting platform of modified Valves in Fracturing Pumps is multi-stage stairs structure, lifting
The through hole of screw thread is provided with the middle part of platform, screw thread is provided with the axis of guide of the valve disc, lifting platform passes through spiral shell with the axis of guide
Line coordinates, and the upper surface of lifting platform is respectively arranged with A spring grooves and B spring grooves, each section of internal layer cylindrical spring point of cluster spring
It is not placed in A spring grooves and B spring grooves, the lower surface of lifting platform and described valve disc upper surface.
Further optimize the technical program, a kind of valve disc upper surface of modified Valves in Fracturing Pumps is provided with C spring grooves, group
The outermost layer cylindrical spring bottom for closing spring is placed in C spring grooves.
Further optimize the technical program, a kind of spiral shell of each section of cylindrical spring of the cluster spring of modified Valves in Fracturing Pumps
Away from successively decreasing successively from outside to inside.
Further optimize the technical program, a kind of lower surface cylindrical boss of the discharge cover of modified Valves in Fracturing Pumps
Bottom is socketed a rubber sleeve.
Further optimize the technical program, polishing is passed through in a kind of side of the discharge cover of modified Valves in Fracturing Pumps.
The utility model has following advantage：
1st, the utility model changes pattern of traditional pump valve using the cylindrical spring of constant rigidity, it is proposed that one kind combination
Spring, the rigidity of the cluster spring can change with the change of valve disc lift；When valve disc lift is relatively low, cluster spring
Rigidity is relatively low, and spring force now is smaller, thus it is ensured that the seating velocity of valve disc is smaller, and then advantageously reduces valve disc to valve seat
Impact, improve the service life of valve disc；When valve disc lift is higher, the rigidity of cluster spring is higher, and spring force now is larger,
It can increase the acceleration of valve disc, accelerate the closure of valve disc, and then reduce angle of lag, improve the volumetric efficiency of fracturing pump, therefore
The utility model is advantageous to improve the integral working of fracturing pump；
2nd, for fracturing pump under different operating modes, discharge pressure is different, therefore in the opening-closing process of valve disc, to cluster spring
Stiffness variation require different, lifting platform is coordinated with the axis of guide by screw thread, passes through rotary elevating platform, you can adjusts cluster spring
Internal layer spring height, reach regulation cluster spring stiffness variation requirement, improve use range of the present utility model, favorably
In the versatility for realizing pump valve, standardization, seriation；The A spring grooves and B spring grooves that lifting platform upper surface is set simultaneously can be right
Cluster spring plays positioning and restriction effect, limits the radial-play of cluster spring, is advantageous to improve the stability of cluster spring；
3rd, valve disc upper surface is provided with C spring grooves while positioning and restriction effect is also played to cluster spring, limitation combination
The radial-play of spring, be advantageous to improve the stability of cluster spring；
4th, the cylindrical spring of specification of the same race, the rigidity that pitch gets over big spring is smaller, each section of cylindrical spring of cluster spring
Pitch is successively decreased successively from outside to inside, then rigidity increases successively from outside to inside, is advantageous to make cluster spring rigidity with pump valve lift become
The effect of change is more notable, and then improves the integral working of fracturing pump；
5th, the lower surface cylindrical boss of discharge cover can play position-limiting action to valve disc, while valve disc is in high-speed opening and closing mistake
Impact in journey to discharge cover is larger, and the rubber sleeve of bottom socket can slow down impact, reduce noise and vibration；
6th, discharge cover will be interference fitted with the pump head body of fracturing pump, and the side for discharging cover is advantageous to improve by polishing
Both fit precision, simultaneously because fracturing pump internal pressure is higher, be advantageous to improve sealing property.
Brief description of the drawings
Fig. 1 is sectional view of the present utility model；
Fig. 2 is the structural representation of valve disc of the present utility model；
Fig. 3 is the structural representation of valve seat of the present utility model；
Fig. 4 is the structural representation of discharge cover of the present utility model；
Fig. 5 is the structural representation of lifting platform of the present utility model.
1st, discharge cover；2nd, cluster spring；3rd, valve disc；4th, sealing ring；5th, valve seat；6th, cylindrical boss；7th, the axis of guide；8th, lead
To pawl；9th, lifting platform；10th, A spring grooves；11st, B spring grooves；12nd, C spring grooves；13rd, rubber sleeve.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of modified Valves in Fracturing Pumps, including discharge cover 1, cluster spring 2,
Valve disc 3, sealing ring 4 and valve seat 5, described discharge cover 1 are cylindrical structure, and the lower surface for discharging cover 1 is provided with cylinder
Boss 6；Described cluster spring 2 comprises at least the cylindrical spring of three sections of internal diameter differences, length not etc., the internal diameter of each cylindrical spring
Successively decrease successively from outside to inside with length, and the axis of all cylindrical springs is respectively superposed；The described upper surface of valve disc 3 is centrally disposed
There is the axis of guide 7, the lower surface of valve disc 3 is provided with guide grab 8；Cluster spring 2 is placed on the upper surface of valve disc 3, and cluster spring
2 axis overlaps with the axis of the axis of guide 7, the bottom of all cylindrical springs and the upper surface of valve disc 3, cluster spring 2
Outermost layer spring top contacts with the lower surface of discharge cover 1, and the axis for discharging cover 1 overlaps with the axis of cluster spring 2；Sealing
Circle 4 is socketed in the side of valve disc 3；The guide grab 8 of valve disc 3 is placed on the inside of valve seat 5, and the lower surface of sealing ring 4 is upper with valve seat 5
Surface contacts, and the axis of valve disc 3 overlaps with the axis of valve seat 5；Lifting platform 9 is multi-stage stairs structure, and the middle part of lifting platform 9 is set
Screwed through hole to be put, screw thread is provided with the axis of guide 7 of the valve disc 3, lifting platform 9 is coordinated with the axis of guide 7 by screw thread,
The upper surface of lifting platform 9 is respectively arranged with A spring grooves 10 and B spring grooves 11, each section of internal layer cylindrical spring point of cluster spring 2
It is not placed in A spring grooves 10 and B spring grooves 11, the lower surface of lifting platform 9 and the described upper surface of valve disc 3；Described valve
The upper surface of disk 3 is provided with C spring grooves 12, and the outermost layer cylindrical spring bottom of cluster spring 2 is placed in C spring grooves 12；It is described
The pitch of each section of cylindrical spring of cluster spring 2 is successively decreased successively from outside to inside；The lower surface cylindrical boss of described discharge cover 1
6 bottom is socketed a rubber sleeve 13；Polishing is passed through in the side of described discharge cover 1.
Valve seat 5 when in use, is installed in the valve seat orifice of pressure break pump hydraulic end pump head body, then by the utility model first
Sealing ring 4 is socketed in the side of valve disc 3, the screwed hole at the center of lifting platform 9 is then aligned to the axis of guide 7 of the upper surface of valve disc 3,
Valve disc 3 and lifting platform 9 are installed together by screw thread, according to requirement of the different operating modes to pressure break pump discharge head, rotation rises
Platform 9 is dropped, the height of lifting platform 9 is adjusted, each section of cylindrical spring of cluster spring 2 is sequentially placed into A bullets according to internal diameter is ascending
In spring groove 10, B spring grooves 11 and C spring grooves 12, ensure that the bottom contact of each section of cylindrical spring is stable, by valve disc 3 and combination
Spring 2 is placed on valve seat 5 simultaneously, ensures that the guide grab 8 of valve disc 3 is placed in the inside of valve seat 5, the upper table of sealing ring 4 and valve seat 5
Face is contacted, and the axis of valve disc 3 is overlapped with the axis of valve seat 5, and rubber sleeve 13 is finally socketed in the cylinder of discharge cover 1
The bottom of boss 6, discharge cover 1 is pressed into the pump head body of fracturing pump, makes the lower surface of discharge cover 1 and the outermost of cluster spring 2
Layer cylindrical spring tip contact, and produce certain pretightning force.
When the working conditions change of fracturing pump, it is necessary to produce different discharge pressures, now by the utility model from fracturing pump
Pump head body in take out, remove discharge cover 1 and cluster spring 2, rotary elevating platform 9 to proper height, incite somebody to action this according to above-mentioned steps
Utility model installs, you can realizes the change of the rigidity of cluster spring 2.
Claims (6)
- A kind of 1. modified Valves in Fracturing Pumps, it is characterised in that：Including discharge cover (1), cluster spring (2), valve disc (3), sealing It is cylindrical structure to enclose (4) and valve seat (5), described discharge cover (1), and the lower surface for discharging cover (1) is provided with circular cylindrical projection Platform (6)；Described cluster spring (2) comprises at least the cylindrical spring of three sections of internal diameter differences, length not etc., each cylindrical spring it is interior Footpath and length are successively decreased successively from outside to inside, and the axis of all cylindrical springs is respectively superposed；Described valve disc (3) upper surface center The axis of guide (7) is provided with, the lower surface of valve disc (3) is provided with guide grab (8)；Cluster spring (2) is placed on the upper table of valve disc (3) Face, and the axis of cluster spring (2) overlaps with the axis of the axis of guide (7), the bottom of all cylindrical springs and the upper table of valve disc (3) Face contacts, and the outermost layer spring top of cluster spring (2) contact with the lower surface of discharge cover (1), and discharge the axis for covering (1) and The axis of cluster spring (2) overlaps；Sealing ring (4) is socketed in the side of valve disc (3)；The guide grab (8) of valve disc (3) is placed in valve seat (5) inside, sealing ring (4) lower surface and the upper surface of valve seat (5), and the axis of the axis of valve disc (3) and valve seat (5) Overlap.
- A kind of 2. modified Valves in Fracturing Pumps according to claim 1, it is characterised in that：Including lifting platform (9), lifting platform (9) it is multi-stage stairs structure, is provided with the through hole of screw thread in the middle part of lifting platform (9), on the axis of guide (7) of the valve disc (3) Screw thread is provided with, lifting platform (9) is coordinated with the axis of guide (7) by screw thread, and the upper surface of lifting platform (9) is respectively arranged with A springs Groove (10) and B spring grooves (11), each section of internal layer cylindrical spring of cluster spring (2) are respectively placed in A spring grooves (10) and B spring grooves (11) in, the lower surface of lifting platform (9) and described valve disc (3) upper surface.
- A kind of 3. modified Valves in Fracturing Pumps according to claim 1, it is characterised in that：Described valve disc (3) upper surface C spring grooves (12) are provided with, the outermost layer cylindrical spring bottom of cluster spring (2) is placed in C spring grooves (12).
- A kind of 4. modified Valves in Fracturing Pumps according to claim 1, it is characterised in that：The cluster spring (2) it is each The pitch of section cylindrical spring is successively decreased successively from outside to inside.
- A kind of 5. modified Valves in Fracturing Pumps according to claim 1, it is characterised in that：Under described discharge cover (1) The bottom of surface cylindrical boss (6) is socketed a rubber sleeve (13).
- A kind of 6. modified Valves in Fracturing Pumps according to claim 1, it is characterised in that：The side of described discharge cover (1) Polishing is passed through in face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693660.1U CN206929071U (en) | 2017-06-15 | 2017-06-15 | A kind of modified Valves in Fracturing Pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693660.1U CN206929071U (en) | 2017-06-15 | 2017-06-15 | A kind of modified Valves in Fracturing Pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206929071U true CN206929071U (en) | 2018-01-26 |
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ID=61346379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720693660.1U Expired - Fee Related CN206929071U (en) | 2017-06-15 | 2017-06-15 | A kind of modified Valves in Fracturing Pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206929071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251079A (en) * | 2021-12-15 | 2022-03-29 | 中国地质大学（北京） | High-efficient fracturing unit is adopted in coal bed gas exploitation |
-
2017
- 2017-06-15 CN CN201720693660.1U patent/CN206929071U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114251079A (en) * | 2021-12-15 | 2022-03-29 | 中国地质大学（北京） | High-efficient fracturing unit is adopted in coal bed gas exploitation |
| CN114251079B (en) * | 2021-12-15 | 2022-09-23 | 中国地质大学（北京） | High-efficient fracturing unit is adopted in coal bed gas exploitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180126 Termination date: 20180615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |