CN203023039U - Liquid cavity structure capable of preventing stress concentration for plunger pump valve box - Google Patents
Liquid cavity structure capable of preventing stress concentration for plunger pump valve box Download PDFInfo
- Publication number
- CN203023039U CN203023039U CN 201220743298 CN201220743298U CN203023039U CN 203023039 U CN203023039 U CN 203023039U CN 201220743298 CN201220743298 CN 201220743298 CN 201220743298 U CN201220743298 U CN 201220743298U CN 203023039 U CN203023039 U CN 203023039U
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- CN
- China
- Prior art keywords
- plunger
- plunger pump
- cavity structure
- liquid cavity
- sap cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a liquid cavity structure capable of preventing stress concentration for a plunger pump valve box. The liquid cavity structure capable of preventing stress concentration for a plunger pump valve box comprises a plunger end, wherein a suction gland end is coaxially arranged at the left side of the plunger end; an exhaust end is vertically arranged above the junction of the plunger end and the suction gland end; a pear-shaped suction-end liquid cavity is coaxially formed below the exhaust end; the plunger end, the suction gland end, the exhaust end and the pear-shaped suction-end liquid cavity from a cross structure; and the lower fillet radius of the suction gland end is 5-30 mm. With the adoption of the liquid cavity structure capable of preventing stress concentration for a plunger pump valve box provided by the utility model, the shortages of the prior art are overcome, the strength of a corner at the cross and connected part is enhanced, and the stress concentration at the connected part is eliminated, thus greatly prolonging the service life of a product.
Description
Technical field
The utility model relates to a kind of anti-stress and concentrates plunger pump clack box sap cavity structure, belongs to fracturing work device technique field.
Background technique
The plunger pump clack box is easily worn part indispensable on fracturing unit truck, valve box structure is complicated, because plunger pump is in extremely abominable working environment for a long time, although adopted the very high high-quality steel of cost and retrofit technique, but because traditional sap cavity structure is not ideal, still there is following defective:
As shown in Figure 1, the sap cavity of tradition plunger pump valve case adopts the cross type structure mostly, the central axis of plunger end 2 and suction gland end 1 is on same straight line a, and the central axis of traditional suction side sap cavity 3 and exhaust end 4 is on same straight line b, and straight line a and straight line b intersect vertically.It is less than normal that the rounded corners at position 5 is passed through in the criss-crossing of this cross type structure mutually, easily produces stress and concentrate, and when not reaching 1,000,000 jig frequency frequency, the plunger pump clack box just is very easy to cracking.
Adopt finite element analysis instrument CAE to a certain plunger pump clack box criss-crossing carried out finite element intensity and analysis of Fatigue-life in the place of passing through mutually.Correspondence is tried hard to dynamic queries as can be known, and maximum stress is 587.5MPa, is positioned at criss-crossing and passes through mutually position corner, and the inner chamber average stress is 315.4MPa.Clack box fatigue life on the whole is more than 1,000,000 times, and the clack box bulk strength is enough, but greatly shorten the minimum fatigue life of weak link.Should strengthen the fillet radius that the position is passed through in crucial sap cavity criss-crossing mutually for this reason when designing, concentrate to reduce stress, elimination causes cracking because the place's of passing through stress is concentrated mutually, thus the working life of greatly improving this product.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of simple and reasonable, long service life and can prevents the plunger pump valve box structure that stress is concentrated.
In order to solve the problems of the technologies described above, the technical solution of the utility model is to provide a kind of anti-stress and concentrates plunger pump clack box sap cavity structure, comprise plunger end, suction gland end is same to be located on the left of plunger end, exhaust end is vertical at plunger end and sucks top, gland end joint, it is characterized in that: described exhaust end below is coaxial is provided with pear type suction side sap cavity, described plunger end, sucks gland end, exhaust end and pear type suction side sap cavity forms the cross type structure; Under described suction gland end, fillet radius is 5mm～30mm.
Preferably, under described plunger end, fillet radius is 8mm～40mm.
Preferably, on described plunger end, fillet radius is 5mm～30mm.
Preferably, on described suction gland end, fillet radius is 5mm～30mm.
A kind of anti-stress that the utility model provides concentrates plunger pump clack box sap cavity structure by changing traditional suction side sap cavity structure, and turning, position size is passed through in the increase criss-crossing mutually, having improved criss-crossing passes through mutually the intensity of position corner and has eliminated the stress that passes through mutually the place and concentrated, make the plunger pump clack box can bear for a long time 105MPa with the condition of interior ultrahigh pressure, high strength at repeated alternation and high-corrosion medium, improved the working life of product.
A kind of anti-stress that the utility model provides concentrates plunger pump clack box sap cavity structure to overcome the deficiencies in the prior art, has improved the intensity that position corner is passed through in criss-crossing mutually, has eliminated the stress that passes through mutually the place and concentrates, thereby increased substantially working life of product.
Description of drawings
Fig. 1 is traditional plunger pump valve case schematic diagram;
Fig. 2 concentrates plunger pump clack box sap cavity structural representation for a kind of anti-stress that the utility model provides;
Description of reference numerals
1-sucks the gland end; The 2-plunger end; 3-tradition suction side sap cavity; The 4-exhaust end; The position is passed through in the 5-criss-crossing mutually; 6-pear type suction side sap cavity; A-sucks fillet under the gland end; Fillet under the B-plunger end; Fillet on the C-plunger end; D-sucks fillet on the gland end.
Embodiment
For the utility model is become apparent, hereby with a preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Fig. 2 concentrates plunger pump clack box sap cavity structural representation for a kind of anti-stress that the utility model provides, described a kind of high pressure resistant plunger pump clack box comprises plunger end 2, suction gland end 1 is coaxial to be positioned at plunger end 2 left sides and to be connected with plunger end 2, exhaust end 4 vertically is positioned at plunger end 2 and suction gland end 1 top, joint, pear type suction side sap cavity 5 is coaxial is positioned at exhaust end 4 belows, plunger end 2, sucks gland end 1, exhaust end 4 and pear type suction side sap cavity 5 forms the cross type structures.
Sucking 1 time fillet A radius of gland end is 5mm～30mm, and 2 times fillet B radiuses of plunger end are 8mm～40mm, and on plunger end 2, fillet C radius is 5mm～30mm, and on suction gland end 1, fillet D radius is 5mm～30mm.
A kind of anti-stress that the utility model provides concentrates plunger pump clack box sap cavity structure by changing traditional suction side sap cavity structure, and turning, position size is passed through in the increase criss-crossing mutually, improved criss-crossing and passed through mutually the intensity of position corner and eliminated the stress that passes through mutually the place and concentrated, avoided clack box not reach and ftracture in advance working life.A kind of high pressure resistant plunger pump clack box that the utility model provides can bear 105MPa for a long time with the condition of interior ultrahigh pressure, high strength at repeated alternation and high-corrosion medium, and be improved the working life of product.
Claims (4)
1. an anti-stress is concentrated plunger pump clack box sap cavity structure, comprise plunger end (2), suction gland end (1) is same to be located on the left of plunger end (2), exhaust end (4) is vertical at plunger end (2) and sucks top, gland end (1) joint, it is characterized in that: the coaxial pear type suction side sap cavity (6) that is provided with in described exhaust end (4) below, described plunger end (2), suction gland end (1), exhaust end (4) and pear type suction side sap cavity (6) form the cross type structure; Lower fillet (A) radius of described suction gland end (1) is 5mm～30mm.
2. a kind of anti-stress as claimed in claim 1 is concentrated plunger pump clack box sap cavity structure, it is characterized in that: lower fillet (B) radius of described plunger end (2) is 8mm～40mm.
3. a kind of anti-stress as claimed in claim 2 is concentrated plunger pump clack box sap cavity structure, it is characterized in that: upper fillet (C) radius of described plunger end (2) is 5mm～30mm.
4. a kind of anti-stress as claimed in claim 3 is concentrated plunger pump clack box sap cavity structure, it is characterized in that: upper fillet (D) radius of described suction gland end (1) is 5mm～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743298 CN203023039U (en) | 2012-12-28 | 2012-12-28 | Liquid cavity structure capable of preventing stress concentration for plunger pump valve box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743298 CN203023039U (en) | 2012-12-28 | 2012-12-28 | Liquid cavity structure capable of preventing stress concentration for plunger pump valve box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023039U true CN203023039U (en) | 2013-06-26 |
Family
ID=48647028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743298 Expired - Lifetime CN203023039U (en) | 2012-12-28 | 2012-12-28 | Liquid cavity structure capable of preventing stress concentration for plunger pump valve box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023039U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573615A (en) * | 2013-11-21 | 2014-02-12 | 四机赛瓦石油钻采设备有限公司 | Fluid end of high-pressure plunger pump |
| CN103711688A (en) * | 2014-01-16 | 2014-04-09 | 长江大学 | Self-tightening sealing and stress testing device for self-enhancing of ultrahigh-pressure pump head body |
| CN109296525A (en) * | 2018-12-18 | 2019-02-01 | 中国有色(沈阳)泵业有限公司 | A kind of propulsive liquid of diaphragm pump chamber |
-
2012
- 2012-12-28 CN CN 201220743298 patent/CN203023039U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573615A (en) * | 2013-11-21 | 2014-02-12 | 四机赛瓦石油钻采设备有限公司 | Fluid end of high-pressure plunger pump |
| CN103711688A (en) * | 2014-01-16 | 2014-04-09 | 长江大学 | Self-tightening sealing and stress testing device for self-enhancing of ultrahigh-pressure pump head body |
| CN103711688B (en) * | 2014-01-16 | 2015-09-09 | 长江大学 | The self-tightening sealing of a kind of ultrahigh pressure pump head body self intensification and stress test device |
| CN109296525A (en) * | 2018-12-18 | 2019-02-01 | 中国有色(沈阳)泵业有限公司 | A kind of propulsive liquid of diaphragm pump chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |