CN114837929A - Pump head self-reinforcing device and matching process - Google Patents
Pump head self-reinforcing device and matching process Download PDFInfo
- Publication number
- CN114837929A CN114837929A CN202210424830.1A CN202210424830A CN114837929A CN 114837929 A CN114837929 A CN 114837929A CN 202210424830 A CN202210424830 A CN 202210424830A CN 114837929 A CN114837929 A CN 114837929A
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- pump head
- head body
- pressure
- pressure sealing
- supporting plate
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008569 process Effects 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to the technical field of fracturing pumps, in particular to a pump head self-reinforcing device and a matching process, wherein the pump head self-reinforcing device comprises a test foundation, a mechanical device body, a supercharging device and a pump head body; a pit is arranged in the test foundation, and a protective cover plate is arranged above the pit; the supercharging equipment is arranged on the test foundation and is positioned on one side of the protective cover plate; the mechanical device body is arranged in the pit and comprises a high-pressure sealing tool and a supporting plate; the pump head body is arranged on the supporting plate, the supporting plate penetrates through the vertical plate, the top of the vertical plate is provided with a hydraulic device, and the side face of the vertical plate is provided with a thread locking device; the high-pressure sealing tool is installed in the pump head body through the hydraulic device and the thread locking device, and sealing of the pump head body is achieved. The high-pressure sealing tool is provided with a plurality of high-pressure sealing elements, so that the high-pressure sealing tool can bear higher test pressure; the supercharging equipment can output 700MPa of working pressure to ensure that the test is stably carried out; by reducing the peak stress, the fatigue life of the pump head body is improved.
Description
Technical Field
The invention relates to the technical field of fracturing pumps, in particular to a pump head body self-reinforcing device and a matching process.
Background
The fracturing pump is a key device in a fracturing equipment unit and changes fracturing fluid from low pressure to high pressure to perform fracturing operation. The pump head body is a key core component of the fracturing pump, is a cuboid thick-wall pressure-bearing part with 3 or 5 groups of crisscross hole inner cavities and is subjected to the action of pulse circulating pressure of about 100 times per minute and about 100MPa (the highest pressure can reach 140MPa) during fracturing operation.
In recent years, the demand of China for petroleum and natural gas resources is continuously increased, and the marching towards ultra-low permeability oil fields, coal bed gas, shale gas, deep well oil and gas fields and deep sea oil and gas resources with higher mining difficulty is a new trend for developing fossil energy in China while keeping the stable increase of the conventional oil and gas yield. The oil gas recovery ratio of China is not high, and the oil gas recovery ratio has larger promotion space. The hydraulic fracturing technology is one of the main measures for realizing the reservoir transformation and yield increase and stabilization of an oil field, and can increase the oil gas yield by several times to dozens of times.
At present, the key problems that the development efficiency of ultra-low permeability oil fields, coal bed gas and shale gas is low and the continuous stable production difficulty is high in China are that the reliability of domestic fracturing equipment is relatively low. The most outstanding problem is that the current hydraulic fracturing process needs a fracturing unit with the characteristics of ultrahigh pressure, large displacement and long service life. However, in the existing fracturing pump, the fatigue life of the pressure-bearing inner cavity of the pump head body is short under the ultrahigh pressure working state, and the existing fracturing pump is easy to generate fatigue cracks and even crack and other failure conditions.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a pump head self-reinforcing device and a matching process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a pump head self-reinforcing device comprises a test foundation, a mechanical device body, a supercharging device and a pump head body; a pit is arranged in the test foundation, and a protective cover plate is arranged above the pit; the supercharging equipment is arranged on the test foundation and is positioned on one side of the protective cover plate; the mechanical device body is arranged in the pit and comprises a high-pressure sealing tool and a supporting plate; the pump head body is arranged on the supporting plate, the supporting plate penetrates through the vertical plate, the top of the vertical plate is provided with a hydraulic device, and the side face of the vertical plate is provided with a thread locking device; the high-pressure sealing tool is installed in the pump head body through the hydraulic device and the thread locking device, and sealing of the pump head body is achieved.
Further, a high-pressure sealing element a, a high-pressure sealing element b and a high-pressure sealing element c are arranged in the high-pressure sealing tool, and a plurality of high-pressure seals are arranged in the high-pressure sealing tool, so that the high-pressure sealing tool can bear the test pressure of 500 MPa.
Furthermore, a positioning frame is arranged on the supporting plate, and the pump head body is fixed between the vertical plate and the supporting plate through the positioning frame.
Furthermore, a water inlet and a water outlet are formed in the pump head body, and the supercharging equipment is connected with the water inlet through a high-pressure pipeline.
Furthermore, a plug is arranged at the water discharge port.
Further, the supporting plate is arranged on the elevator, and the height of the supporting plate is adjusted through the elevator.
Furthermore, the protective cover plate is controlled to be opened, closed and closed through a transmission machine and a rack.
The invention has the technical effects that:
compared with the prior art, the pump head body self-reinforcing device and the matching process have the following advantages:
1. the arrangement of the protective cover plate in the test foundation can ensure that casualties are avoided when accidents happen in the test;
2. according to the invention, the pump head body is fixed between the vertical plate and the supporting plate through the positioning frame, so that the pump head body is ensured not to displace in the test process;
3. the high-pressure sealing tool is provided with a plurality of high-pressure sealing elements, and can bear the test pressure of 450 MPa;
4. the supercharging equipment can output 700MPa of working pressure, and the stable test is ensured; 5. the invention can reduce peak stress and prolong the fatigue life of the pump head body.
Drawings
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is a schematic diagram of the main structure of the test base and the pressurizing apparatus of the present invention;
FIG. 3 is a schematic structural diagram of a mechanical device body according to the present invention;
fig. 4 is a schematic structural diagram of the high-pressure sealing tool of the present invention.
In the figure, 1, a test foundation, 2, a mechanical device body, 3, a pressurizing device, 4, a transmission machine, 5, a rack, 6, a protective cover plate, 7, a pit, 8, a supporting plate, 9, a lifter, 10, a vertical plate, 11, a positioning frame, 12, a hydraulic device, 13, a thread locking device, 14, a plug, 15, high-pressure sealing pieces a and 16, high-pressure sealing pieces b and 17, high-pressure sealing pieces c and 18, a high-pressure sealing tool, 19, a pump head body, a water inlet 20 and a water outlet 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the specification.
Example 1:
as shown in fig. 1-4, the pump head self-reinforcing device according to this embodiment includes a test base 1, a mechanical device body 2, a pressure-increasing device 3, and a pump head body 19; the pump head body 19 is provided with a water inlet 20 and a water outlet 21, and the supercharging equipment 3 is connected with the water inlet 20 through a high-pressure pipeline; the plug 14 is arranged at the water outlet 21.
A pit 7 is arranged in the test foundation 1, and a protective cover plate 6 is arranged above the pit 7; supercharging equipment 3 sets up on experimental basis 1, is located protective cover 6 one side.
The mechanical device body 2 is arranged in a pit 7 and comprises a high-pressure sealing tool 18 and a supporting plate 8; the high-pressure seal tool 18 is provided with a high-pressure seal a15, a high-pressure seal b16 and a high-pressure seal c17, and a plurality of high-pressure seals are arranged in the high-pressure seal tool 18, so that the high-pressure seal tool can bear the test pressure of 500 MPa.
The pump head body 19 is arranged on the supporting plate 8, the supporting plate 8 is arranged on the lifter 9 and penetrates through the vertical plate 10, and the lifter 9 is preferably a screw lifter; the top of the vertical plate 10 is provided with a hydraulic device 12, and the side surface of the vertical plate 10 is provided with a thread locking device 13; the high-pressure sealing tool 18 is installed in the pump head body 19 through the hydraulic device 12 and the thread locking device 13, and sealing of the pump head body 19 is achieved.
The supporting plate 8 is provided with a positioning frame 11, and the pump head body 19 is fixed between the vertical plate 10 and the supporting plate 8 through the positioning frame 11.
The protective cover plate 6 is controlled to open and close through the transmission machine 4 and the rack 5. Specifically, one side that lies in protective cover 6 on the experimental basis is provided with driving machine 4 and rack 5, and rack 5 is connected with protective cover 6 one side, and 4 tip of driving machine and 5 meshes with the rack, move in the horizontal direction through 4 drive racks of driving machine, realize opening and closing of protective cover 6. The protective cover plates 6 are arranged in two groups, and each protective cover plate 6 is controlled to be opened, closed and opened through the transmission machine 4 and the rack 5, so that the protective cover plates 6 can be operated conveniently.
The thread locking device adopts the prior art, and the detailed structure of the thread locking device is not described any more.
The matched process flow of the pump head self-reinforcing device comprises the following steps:
(1) loading a high-pressure seal a15, a high-pressure seal b16 and a high-pressure seal c17 into the high-pressure seal tool 18, and then loading the high-pressure seal tool 18 into the pump head body 19;
(2) opening a protective cover plate 6 through a transmission machine 4 and a rack 5, and placing an installed pump head body 19 into a pit 7 in a test foundation 1 through a crane;
(3) after entering the pit 7, the pump head body 19 is placed on a supporting plate 8 of the mechanical device body 2, and the up-and-down movement of the pump head body 19 is controlled by a lifter 9 below the supporting plate 8; after the position of the pump head body 19 is adjusted, the pump head body 19 is placed into the vertical plate 10 by using the supporting plate 8; then the pump head body 19 is fixed between the vertical plate 10 and the supporting plate 8 by using the positioning frame 11;
(4) the hydraulic device 12 above the vertical plate 10 and the thread locking devices 13 on the left and right sides of the vertical plate 10 push the high-pressure sealing piece a15, the high-pressure sealing piece b16 and the high-pressure sealing piece c17 of the pump head body, after the high-pressure sealing is installed in place, the hydraulic device 12 and the thread locking devices 13 reset, and the clamping force of the hydraulic device 12 and the thread locking devices 13 is removed;
(5) the supercharging equipment 3 is connected with a water inlet 20 arranged on a pump head body 19 through a high-pressure pipeline, a water inlet valve of the supercharging equipment 3 is opened, when a water outlet 21 arranged on the pump head body 19 is observed to have liquid flowing out, the water inlet valve of the supercharging equipment 3 is closed, a plug 14 is screwed at the water outlet 21, an automatic control system of the supercharging equipment 3 is opened, the liquid is injected into the pump head body 19, the supercharging equipment 3 stops injecting water after ultrahigh pressure is added into the pump head body 19, and pressure is maintained for 20 min.
(6) And after the pressure maintaining is finished, releasing the pressure, and taking the pump head body 19 out of the pit 7 through the steps to finish the test.
Further, in the step (5), the range of the extra-high pressure added to the interior of the pump head body 19 is preferably 400-.
According to the invention, hydraulic pressure, preferably up to 400-500MPa hydraulic pressure (different pressures of pump head bodies) is slowly applied to the closed inner cavity of the pump head body, so that the material of the inner wall part enters the tensile plastic deformation, and the material of the outer wall still keeps the elastic deformation state; because the plastic deformation can not be recovered, favorable residual compressive stress concentration can be formed at the intersecting line of the inner cavity of the pump head body after pressure relief, and the outer layer material is in a residual tensile stress state; because the inner wall of the pump head body is a crack initiation and expansion region, the existence of the self-reinforced residual compressive stress field can partially offset the working stress of the region, reduce the peak stress and improve the fatigue life of the pump head body.
The above embodiments are only specific examples of the present invention, and the scope of the present invention includes but is not limited to the above embodiments, and any suitable changes or modifications by those of ordinary skill in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.
Claims (10)
1. A pump head body self-reinforcing device is characterized in that: the device comprises a test foundation, a mechanical device body, a supercharging device and a pump head body; a pit is arranged in the test foundation, and a protective cover plate is arranged above the pit; the supercharging equipment is arranged on the test foundation and is positioned on one side of the protective cover plate; the mechanical device body is arranged in the pit and comprises a high-pressure sealing tool and a supporting plate; the pump head body is arranged on the supporting plate, the supporting plate penetrates through the vertical plate, the top of the vertical plate is provided with a hydraulic device, and the side face of the vertical plate is provided with a thread locking device; the high-pressure sealing tool is installed in the pump head body through the hydraulic device and the thread locking device, and sealing of the pump head body is achieved.
2. The pump head body autofrettage apparatus of claim 1, wherein: and a high-pressure sealing piece a, a high-pressure sealing piece b and a high-pressure sealing piece c are arranged in the high-pressure sealing tool.
3. The pump head body autofrettage apparatus according to claim 1, wherein: the supporting plate is provided with a positioning frame, and the pump head body is fixed between the vertical plate and the supporting plate through the positioning frame.
4. The pump head body autofrettage apparatus according to claim 1, wherein: the pump head body is provided with a water inlet and a water outlet, and the supercharging equipment is connected with the water inlet through a high-pressure pipeline.
5. The pump head body autofrettage apparatus according to claim 4, wherein: and a plug is arranged at the water discharge port.
6. The pump head body autofrettage apparatus according to claim 1, wherein: the pallet is placed on a lift.
7. The pump head body autofrettage apparatus of claim 1, wherein: the protective cover plate is controlled to be opened, closed and closed through a transmission machine and a rack.
8. The pump head body autofrettage apparatus according to claim 7, wherein: the protective cover plates are arranged in two groups, and each protective cover plate is controlled to be opened, closed and closed through a transmission machine and a rack.
9. The pump head body self-energizing device according to any one of claims 1-8, wherein: the matched process flow of the pump head self-reinforcing device comprises the following steps:
(1) loading a high-pressure sealing element a, a high-pressure sealing element b and a high-pressure sealing element c into a high-pressure sealing tool, and then loading the high-pressure sealing tool into a pump head body;
(2) opening the protective cover plate and the rack through a transmission machine, and putting the mounted pump head body into a pit in a test foundation through a crane;
(3) after the pump head body enters the pit, the pump head body is placed on a supporting plate of the mechanical device body, and the up-and-down movement of the pump head body is controlled by a lifter below the supporting plate; after the position of the pump head body is adjusted, the pump head body is placed into the vertical plate by using the supporting plate; fixing the pump head body between the vertical plate and the supporting plate by using a positioning frame;
(4) pushing a high-pressure sealing piece a, a high-pressure sealing piece b and a high-pressure sealing piece c of the pump head body into the vertical plate through a hydraulic device above the vertical plate and screw thread locking devices on the left and right sides of the vertical plate, resetting the hydraulic device and the screw thread locking devices after the high-pressure sealing is installed in place, and removing the clamping force of the hydraulic device and the screw thread locking devices;
(5) connecting a supercharging device with a water inlet arranged on a pump head body through a high-pressure pipeline, opening a water inlet valve of the supercharging device, closing the water inlet valve of the supercharging device when a water outlet arranged on the pump head body is observed to have liquid flowing out, screwing a plug at the water outlet, opening an automatic control system of the supercharging device, injecting liquid into the pump head body, adding ultrahigh pressure into the pump head body, stopping water injection of the supercharging device, and maintaining the pressure for 20 min;
(6) and (4) after the pressure maintaining is finished, releasing the pressure, taking out the pump head body from the pit through the steps, and finishing the test.
10. The pump head body autofrettage apparatus according to claim 9, wherein: in the step (5), the range of the ultrahigh pressure applied to the interior of the pump head body is preferably 400-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424830.1A CN114837929A (en) | 2022-04-21 | 2022-04-21 | Pump head self-reinforcing device and matching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424830.1A CN114837929A (en) | 2022-04-21 | 2022-04-21 | Pump head self-reinforcing device and matching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837929A true CN114837929A (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210424830.1A Pending CN114837929A (en) | 2022-04-21 | 2022-04-21 | Pump head self-reinforcing device and matching process |
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| Country | Link |
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| CN (1) | CN114837929A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937555A (en) * | 2012-10-31 | 2013-02-20 | 中北大学 | Transient loading simulation test device and control method for ultrahigh pressure autofrettage structure |
| CN103195699A (en) * | 2013-04-18 | 2013-07-10 | 长江大学 | Pump head self-enhancing seal structure and self-enhancing device for pump head |
| 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 |
| CN104535428A (en) * | 2014-12-24 | 2015-04-22 | 东北石油大学 | Safety protecting device for ultrahigh-pressure water pressure test of downhole tool |
| CN112572206A (en) * | 2020-12-24 | 2021-03-30 | 国网河南省电力公司社旗县供电公司 | Lifting structure and special charging pile for new energy automobile |
| CN215442031U (en) * | 2021-06-30 | 2022-01-07 | 安徽送变电工程有限公司 | Detachable electric foundation pit safety protection cover plate |
-
2022
- 2022-04-21 CN CN202210424830.1A patent/CN114837929A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937555A (en) * | 2012-10-31 | 2013-02-20 | 中北大学 | Transient loading simulation test device and control method for ultrahigh pressure autofrettage structure |
| CN103195699A (en) * | 2013-04-18 | 2013-07-10 | 长江大学 | Pump head self-enhancing seal structure and self-enhancing device for pump head |
| 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 |
| CN104535428A (en) * | 2014-12-24 | 2015-04-22 | 东北石油大学 | Safety protecting device for ultrahigh-pressure water pressure test of downhole tool |
| CN112572206A (en) * | 2020-12-24 | 2021-03-30 | 国网河南省电力公司社旗县供电公司 | Lifting structure and special charging pile for new energy automobile |
| CN215442031U (en) * | 2021-06-30 | 2022-01-07 | 安徽送变电工程有限公司 | Detachable electric foundation pit safety protection cover plate |
Non-Patent Citations (1)
| Title |
|---|
| 李淑芳等: ""柱塞泵液缸自增强工艺研究"", 《石油机械》, pages 184 - 187 * |
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