[go: up one dir, main page]

CN111270060B - High-pressure water jet nozzle and device for reducing full-field welding residual stress - Google Patents

High-pressure water jet nozzle and device for reducing full-field welding residual stress Download PDF

Info

Publication number
CN111270060B
CN111270060B CN202010210306.5A CN202010210306A CN111270060B CN 111270060 B CN111270060 B CN 111270060B CN 202010210306 A CN202010210306 A CN 202010210306A CN 111270060 B CN111270060 B CN 111270060B
Authority
CN
China
Prior art keywords
water jet
jet nozzle
section
main channel
water inlet
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.)
Active
Application number
CN202010210306.5A
Other languages
Chinese (zh)
Other versions
CN111270060A (en
Inventor
罗云
蒋文春
郑红祥
胡效东
杨滨
张玉财
宋明
周凡
陈建飞
任林昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Petroleum East China
Original Assignee
China University of Petroleum East China
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Petroleum East China filed Critical China University of Petroleum East China
Priority to CN202010210306.5A priority Critical patent/CN111270060B/en
Publication of CN111270060A publication Critical patent/CN111270060A/en
Application granted granted Critical
Publication of CN111270060B publication Critical patent/CN111270060B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Nozzles (AREA)

Abstract

本发明提供了一种用于降低全场焊接残余应力的高压水射流喷嘴及装置。高压水射流喷嘴包括进水段、空化段和出水段，进水段包括进水端口和上部空化腔，进水端口为上宽下窄的锥形筒状，通过进水端收缩端口与上部空化腔相通；空化段包括下部空化腔、夹持端和最终引入端上部，最终引入端上部的上段为上宽下窄的锥形筒状，下段为最终引入端口；空化段的上端与进水段的下端相连，将上部空化腔与下部空化腔相接形成完整的空化腔，空化腔直径为进水端收缩端口直径的3～5倍；出水段与夹持端可拆卸相连，将最终引入端上部与最终引入端下部相接形成完整的最终引入端；出口为上窄下宽的椭圆形锥形筒状，出口端半长轴距离为出口端半短轴距离的3～5倍。

Figure 202010210306

The invention provides a high-pressure water jet nozzle and device for reducing the residual stress of full-field welding. The high-pressure water jet nozzle includes a water inlet section, a cavitation section and a water outlet section. The water inlet section includes a water inlet port and an upper cavitation cavity. The upper cavitation cavity is connected; the cavitation section includes the lower cavity cavity, the clamping end and the upper part of the final introduction end, the upper part of the upper part of the final introduction end is a conical cylindrical shape with a wide upper and a narrow lower, and the lower part is the final introduction port; the cavitation section The upper end of the cavitation is connected to the lower end of the water inlet section, and the upper cavitation cavity is connected with the lower cavitation cavity to form a complete cavitation cavity. The holding end is detachably connected, and the upper part of the final introduction end is connected with the lower part of the final introduction end to form a complete final introduction end; the outlet is an oval conical cylindrical shape with a narrow upper and a lower width, and the distance between the semi-major axis of the outlet end is the half-short of the outlet end. 3 to 5 times the axis distance.

Figure 202010210306

Description

High-pressure water jet nozzle and device for reducing full-field welding residual stress
Technical Field
The invention relates to the technical field of full-field welding residual stress reduction, in particular to a high-pressure water jet nozzle and a high-pressure water jet device for reducing the full-field welding residual stress.
Background
Welding is an important joining process in the manufacturing process of the pressure vessel, however, after the welding is completed, the residual stress remained in the welded joint is generated due to the fact that the pressure vessel generates stretching and shrinking deformation due to continuous heating and cooling of a welding temperature field in the welding heat process, and therefore the welding seam of the pressure vessel is restrained. The presence of weld residual stresses has a significant effect on the structural integrity of the pressure vessel, and in particular the presence of residual tensile stresses can accelerate fatigue failure and stress corrosion cracking failure of the welded joint. Therefore, the reasonable residual stress regulation and control method is adopted to reduce the residual tensile stress at the welding joint, and has important significance for ensuring the safe operation of the pressure vessel.
High-pressure water jet peening is a novel surface treatment method for reducing welding residual stress, has the advantages of convenient operation, energy conservation, environmental protection and capability of realizing residual stress elimination operation of welding joints at dead angle positions, and is more and more valued by a plurality of researchers and technicians at present. Research has shown that the residual tensile stress on the surface of the welded joint after high-pressure water jet peening treatment can be reduced to residual compressive stress. However, most of the current high-pressure water jet peening apparatuses are improved by high-pressure water jet apparatuses for cleaning and cutting, and the diameter of a water jet nozzle is often small, resulting in a small area for water jet peening treatment formed on a member to be peened. The number of welding seams of the pressure vessel is large, the area of water jet shot blasting treatment is extremely large, if the traditional water jet nozzle is adopted to treat the welding residual stress of the pressure vessel, the efficiency is too low, and the high efficiency requirement of the modern manufacturing industry at present is not met. If the diameter of the water jet nozzle is simply increased, the water jet pressure is low, and a good residual stress eliminating effect cannot be generated. Therefore, a high-pressure water jet nozzle structure capable of realizing full-field welding residual stress is to be developed, so that the working efficiency of the pressure vessel welding residual stress relieving process is improved.
Disclosure of Invention
Based on the background technology, the invention aims to provide the high-pressure water jet nozzle for reducing the welding residual stress of the full-field welding in order to improve the working efficiency of reducing the welding residual stress of the pressure vessel by high-pressure water jet shot blasting; it is another object of the present invention to provide a high pressure water jet apparatus for reducing full field welding residual stress.
The invention adopts the following technical scheme:
in one aspect, the high-pressure water jet nozzle for reducing the full-field welding residual stress comprises a water inlet section, a cavitation section and a water outlet section, wherein the water inlet section comprises a water inlet port and an upper cavitation cavity, the water inlet port is in a conical cylinder shape with a wide upper part and a narrow lower part, the tail end of the water inlet port is a water inlet end contraction port, and the water inlet port is communicated with the upper cavitation cavity through the water inlet end contraction port;
the cavitation section comprises a lower cavitation cavity, a clamping end and an upper part of a final introduction end, the upper section of the upper part of the final introduction end is in a conical cylinder shape with a wide upper part and a narrow lower part, and the lower section of the upper part of the final introduction end is a final introduction port;
the upper end of the cavitation section is connected with the lower end of the water inlet section, the upper cavitation cavity is connected with the lower cavitation cavity to form a complete cavitation cavity, and the diameter of the cavitation cavity
Figure BDA0002422565970000021
For contracting the diameter of the port at the water inlet end
Figure BDA0002422565970000022
3-5 times of the total weight of the composition;
the water outlet section comprises a final introduction end lower part positioned on the upper section of the water outlet section and an outlet positioned on the lower section of the water outlet section, the water outlet section is detachably connected with the clamping end, and the upper part of the final introduction end is connected with the lower part of the final introduction end to form a complete final introduction end; the outlet is in the shape of an elliptic conical cylinder with a narrow upper part and a wide lower part.
In the technical scheme, high-pressure water enters the water inlet port of the water jet nozzle, then enters the upper cavitation cavity through the water inlet end contraction port and further enters the cavitation cavity, so that the water jet generates a self-cavitation effect, and the striking pressure of the water jet is enhanced.
And the high-pressure water enters the upper part of the final introduction end from the lower cavitation cavity and further enters the final introduction end to reach the outlet of the water jet nozzle.
The water outlet sections of different water jet nozzles are different, which is particularly characterized in that the half-long axis distance a of the outlet end is different from the half-short axis distance b of the outlet end of the water jet nozzle, and the water outlet sections can be adjusted according to requirements in practical application.
Preferably, the water inlet end contraction angle theta of the water inlet port2Is 15-30 degrees; a final lead-in contraction angle theta of an upper section of the final lead-in upper part3Is 90-120 degrees.
Preferably, the water inlet end is constricted in port diameter
Figure BDA0002422565970000023
1-2 mm; the final introduction port diameter
Figure BDA0002422565970000024
0.3 to 0.5 mm.
The technical effect directly brought by the optimized technical scheme is as follows: the jet flow can generate better cavitation in the cavitation cavity and can be smoothly led out to the water outlet section of the jet flow nozzle, so that the ejected jet flow contains certain cavitation bubbles, the impact force of the jet flow on the ejected workpiece is increased, and the residual stress eliminating effect is improved.
Preferably, the half-long axis distance a of the outlet end of the outlet is 3-5 times of the half-short axis distance b of the outlet end; the half-short axial distance b of the outlet end is 1-2 mm.
Preferably, the water inlet section, the cavitation section and the water outlet section are connected by threads and the like; height H of water inlet port110-15 mm; height H of cavitation cavity215-20 mm; single final lead-in height H35-10 mm; height H of outlet end4Is 20-40 mm.
The technical effect directly brought by the optimized technical scheme is as follows: the cavitation jet generated by the cavitation cavity is still the cavitation jet after passing through the water outlet section of the water jet nozzle, so that the stable hitting power of the water jet is ensured; the jetted water jet is distributed in a fan shape, so that the striking force area of the water jet acting on the sprayed workpiece is increased, and the residual stress eliminating efficiency is improved; on the other hand, can dismantle the connection between water inlet section, cavitation section and the play water section, make things convenient for cavitation section maintenance and change to according to the nozzle play water section of different models of actual residual stress elimination operating mode selection for use, realize residual stress elimination under the different welded joint sizes.
As another aspect thereof, a high-pressure water jet device for reducing the residual stress of full-field welding comprises the high-pressure water jet nozzle for reducing the residual stress of full-field welding, and further comprises a water jet nozzle supporting system, a pulse jet generating system and a water jet nozzle main channel;
the water jet nozzle supporting system comprises a water jet peening moving trolley and a water jet nozzle moving supporting frame arranged on the water jet peening moving trolley;
the water jet nozzle main channel is installed on the water jet nozzle moving support frame, one end of the water jet nozzle main channel is connected to a high-pressure water jet water inlet pipeline, the other end of the water jet nozzle main channel is connected with the high-pressure water jet nozzle, and the water jet nozzle moving support frame and the water jet nozzle main channel are driven by the moving of the water jet peening moving trolley to drive the high-pressure water jet nozzle to move.
In the technical scheme, high-pressure water enters the water inlet port of the high-pressure water jet nozzle from the main channel and then enters the upper cavitation cavity through the contraction end, so that the water jet generates a self-cavitation effect, and the striking pressure of the water jet is enhanced.
Furthermore, the high-pressure water jet nozzles are multiple, and each high-pressure water jet nozzle is provided with a water jet nozzle flow control valve.
Furthermore, the main channel of the water jet nozzle comprises a main channel water inlet section, a main channel pulse generation section and a plurality of main channel water outlet sections, the main channel of the water jet nozzle is communicated with each high-pressure water jet nozzle one by one through each main channel water outlet section, the main channel water inlet section is conical with a wide front part and a narrow back part, the high-pressure water jet enters from the main channel water inlet section, then passes through the main channel pulse generation section to generate pulse jet, and finally flows to each single high-pressure water jet nozzle through the main channel water outlet section.
Furthermore, the main channel of the water jet nozzle is also provided with a flow regulating valve for controlling each single high-pressure water jet nozzle, so as to control the opening and closing of each high-pressure water jet nozzle.
Further, the contraction angle theta of the main channel water inlet section1Is 5-10 degrees.
Furthermore, the center distance L between the water outlet sections of the adjacent main channels is 5-10 mm.
In the technical scheme, the high-pressure water jet enters from the water inlet section of the main channel, then passes through the pulse generation section of the main channel to generate pulse jet, and finally flows to each single high-pressure water jet nozzle through the water outlet section of the main channel. And a flow regulating valve for controlling each single high-pressure water jet nozzle is arranged on the main channel of the water jet nozzle, and the opening and closing of each high-pressure water jet nozzle are controlled. The water inlet section of the main channel is conical, and the contraction angle theta of the water inlet section of the main channel1Is 5 degrees to 10 degrees, and the distance L between the water outlet sections of the adjacent main channels is 5mm to 10 mm.
And the pulse jet generation system comprises a pulse generator and an ultrasonic generation device which is connected with the pulse generator in a control way, and the pulse generator is connected with the pulse generation section of the main channel.
The invention has the beneficial effects that:
the regulation and control of the full-field welding residual stress can be realized at one time, and the working efficiency of reducing the welding residual stress of the pressure vessel by high-pressure water jet shot blasting is greatly improved; and the residual stress eliminating effect is good.
Drawings
FIG. 1 is a schematic view of an assembly structure of a high-pressure water jet nozzle;
FIG. 2 is a schematic structural view of a water inlet section;
FIG. 3 is a schematic structural view of a cavitation section;
FIG. 4 is a schematic structural view of a water outlet section;
FIG. 5 is a schematic top view of the outlet end of the outlet;
FIG. 6 is a schematic view of a high pressure water jet apparatus having a high pressure water jet nozzle configuration for treating a weld joint;
fig. 7 is a structural schematic diagram of a main channel of the water jet nozzle.
Wherein 1 is a welding seam; 2 is a heat affected zone; 3 is a residual tensile stress area; 4 is a welding joint sample; 5 is a high-pressure water jet water inlet pipeline; 6 is a water jet nozzle moving support frame; 7 is a pulse generator; 8 is an ultrasonic generating device; 9 is a flow regulating valve; 10 is a main channel of a water jet nozzle; 11 is a water inlet section; 12 is a cavitation section; 13 is a water outlet section; 14 is a water inlet section of the main channel; 15 is a main channel pulse generation section; 16 is a water outlet section of the main channel; 17 is a water inlet port; 18 is an upper cavitation cavity; 19 is a lower cavitation cavity; 20 is a clamping end; 21 is the final lead-in lower part; 22 is an outlet; 23, a water jet peening moving trolley; 24 is a water jet nozzle flow control valve; 25 is the upper part of the final leading-in end;
H1is the height of the water inlet port; h2Is the cavitation chamber height; h3The final lead-in height; h4Is the outlet end height;
θ1the contraction angle of the water inlet section of the main channel is set; theta2Is the contraction angle of the water inlet end; theta3The final lead-in contraction angle;
Figure BDA0002422565970000043
the diameter of the port is contracted for the water inlet end;
Figure BDA0002422565970000041
to the final inlet port diameter;
Figure BDA0002422565970000042
is the diameter of the cavitation cavity;
a is the half-length axial distance of the outlet end; b is the half-short axial distance of the outlet end; l is the distance between the water outlet sections of the adjacent main channels.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
referring to fig. 1 to 4, a high-pressure water jet nozzle for reducing full-field welding residual stress includes a water inlet section 11, a cavitation section 12 and a water outlet section 13, where the water inlet section 11 includes a water inlet port 17 and an upper cavitation cavity 18, the water inlet port 17 is a tapered cylinder with a wide top and a narrow bottom, and the tail end of the water inlet port is a water inlet end contraction port, and the water inlet port 17 is communicated with the upper cavitation cavity 18 through the water inlet end contraction port;
the cavitation section 12 comprises a lower cavitation chamber 19, a holding end 20 and a final introduction end upper part 25, wherein the upper section of the final introduction end upper part 25 is in a conical cylinder shape with a wide upper part and a narrow lower part, and the lower section is a final introduction port;
the upper end of the cavitation section 12 is connected with the lower end of the water inlet section 11, the upper cavitation cavity 18 is connected with the lower cavitation cavity 19 to form a complete cavitation cavity, and the diameter of the cavitation cavity
Figure BDA0002422565970000044
For contracting the diameter of the port at the water inlet end
Figure BDA0002422565970000045
3-5 times of the total weight of the composition;
the water outlet section 13 comprises a final inlet lower part 21 at the upper section and an outlet 22 at the lower section, the water outlet section 13 is detachably connected with the holding end 20, and a final inlet upper part 25 is connected with the final inlet lower part 21 to form a complete final inlet; the outlet 22 is in the shape of an elliptical cone with a narrow top and a wide bottom.
Referring to fig. 2, high-pressure water enters the water inlet port 17 of the water jet nozzle, then enters the upper cavitation cavity 18 through the water inlet end contraction port, and further enters the cavitation cavity, so that the water jet generates a self-cavitation effect, and the striking pressure of the water jet is enhanced.
Referring to fig. 3 and 4, high pressure water enters the final lead-in upper portion 25 from the lower cavitation chamber 19 and further enters the final lead-in to the water jet nozzle outlet 22.
Referring to fig. 5, the water outlet sections 13 of different water jet nozzles are not identical, which is particularly indicated by the fact that the half-length axial distance a of the outlet end is not identical to the half-length axial distance b of the outlet end of the water jet nozzle, and can be adjusted according to requirements in practical application.
As an example, the water inlet end of the water inlet port 17 has a contraction angle θ2Is 15-30 degrees; a final lead-in contraction angle theta of an upper section of the final lead-in upper part 253Is 90-120 degrees.
As one example, further, the water inlet end shrinks the port diameter
Figure BDA0002422565970000051
1-2 mm; the final introduction port diameter
Figure BDA0002422565970000052
0.3 to 0.5 mm.
As an embodiment, the half-long axial distance a of the outlet end of the outlet 22 is 3-5 times of the half-short axial distance b of the outlet end.
As an embodiment, the half-short axial distance b of the outlet end of the outlet 22 is 1-2 mm.
Referring to fig. 1, as an embodiment, the water inlet section 11, the cavitation section 12 and the water outlet section 13 are connected by threads or the like; height H of water inlet port110-15 mm; height H of cavitation cavity215-20 mm; single final lead-in height H35-10 mm; height H of outlet end4Is 20-40 mm.
Referring to fig. 6, a high pressure water jet device for reducing the residual stress of full-field welding comprises any one of the high pressure water jet nozzles for reducing the residual stress of full-field welding, and further comprises a water jet nozzle support system, a pulse jet generation system and a water jet nozzle main channel 10;
the water jet nozzle supporting system comprises a water jet peening moving trolley 23 and a water jet nozzle moving supporting frame 6 arranged on the water jet peening moving trolley 23;
the water jet nozzle main channel 10 is installed on the water jet nozzle moving support frame 6, one end of the water jet nozzle main channel is connected to the high-pressure water jet water inlet pipeline 5, the other end of the water jet nozzle main channel is connected with the high-pressure water jet nozzle, and the water jet nozzle moving support frame 6 and the water jet nozzle main channel 10 are driven to move by the movement of the water jet peening moving trolley 23.
The high-pressure water enters the water inlet port 17 of the high-pressure water jet nozzle from the main channel and then enters the upper cavitation cavity 18 through the contraction end, so that the water jet generates a self-cavitation effect, and the striking pressure of the water jet is enhanced.
As an embodiment, further, the number of the high-pressure water jet nozzles is multiple, and each high-pressure water jet nozzle is provided with a water jet nozzle flow control valve 24.
As an embodiment of the present invention, further, the main channel 10 of the water jet nozzle includes a main channel water inlet section 14, a main channel pulse generation section 15, and a plurality of main channel water outlet sections 16, the main channel 10 of the water jet nozzle is communicated with each high pressure water jet nozzle one by one through each main channel water outlet section 16, the main channel water inlet section 14 is a cone with a wide front and a narrow back, the high pressure water jet enters from the main channel water inlet section 14, then passes through the main channel pulse generation section 15 to generate a pulse jet, and finally passes through the main channel water outlet sections 16 to flow to each single high pressure water jet nozzle.
As an embodiment, the main channel 10 of the water jet nozzle is further provided with a flow regulating valve 9 for controlling each single high-pressure water jet nozzle, so as to control the opening and closing of each high-pressure water jet nozzle.
As one example, the main channel water inlet section 14 has a main channel water inlet section contraction angle θ1Is 5-10 degrees.
As one example, the center-to-center distance L between the water outlet sections 16 of adjacent main channels is 5-10 mm.
Referring to fig. 7, the high pressure water jet enters from the main channel water inlet section 14, then passes through the main channel pulse generation section 15 to generate a pulse jet, and finally flows to each single high pressure water jet nozzle through the main channel water outlet section 16. The main channel 10 of the water jet nozzle is provided with a flow regulating valve 9 for controlling each single high-pressure water jet nozzle, and the opening and the closing of each high-pressure water jet nozzle are controlled. The main channel water inlet section 14 is conical, and the contraction angle theta of the main channel water inlet section1Is 5 degrees to 10 degrees, and the distance L between the water outlet sections of the adjacent main channels is 5mm to 10 mm.
As an embodiment, further, the ultrasonic pulse jet generator system further comprises a pulse jet generating system, wherein the pulse jet generating system comprises a pulse generator 7 and an ultrasonic generating device 8 in control connection with the pulse generator 7, and the pulse generator 7 is connected with a main channel pulse generating section 15.
The operation process of the high-pressure water jet device containing the high-pressure water jet nozzle for processing the welding joint is as follows:
firstly, the welding joint 4 is divided into a welding seam area 1, a heat affected area 2 and a tensile stress area 3, the number of selected nozzles and the flow of a single nozzle are reasonably selected according to the width of each area, the number of the nozzles is selected according to the width of the tensile stress area 3, the flow of the single nozzle is selected according to the tensile stress value, and the flow is controlled by a single water jet nozzle flow control valve 24.
After the number and the flow of the water jet nozzles are selected, other unused water jet flow regulating valves 9 are closed, the height of the high-pressure water jet nozzle from a member to be sprayed is regulated by moving the support frame 6 through the water jet nozzle, the water jet peening moving trolley 23 is started, the high-pressure water jet nozzle moves along the parallel direction of the welding line 1, and after the whole welding line is peened, the treatment of eliminating the residual stress of the whole welding joint is finished.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.

Claims (8)

1.一种用于降低全场焊接残余应力的高压水射流喷嘴，其特征在于，包括进水段(11)、空化段(12)和出水段(13)，所述进水段(11)包括进水端口(17)和上部空化腔(18)，所述进水端口(17)为上宽下窄的锥形筒状，其尾端为进水端收缩端口，进水端口(17)通过进水端收缩端口与上部空化腔(18)相通；1. A high-pressure water jet nozzle for reducing the residual stress of full-field welding, characterized in that it comprises a water inlet section (11), a cavitation section (12) and a water outlet section (13), and the water inlet section (11) ) includes a water inlet port (17) and an upper cavitation cavity (18), the water inlet port (17) is a conical cylindrical shape with a wide upper and a lower narrow, and its tail end is a water inlet shrinking port, and the water inlet port ( 17) communicate with the upper cavitation cavity (18) through the shrink port of the water inlet end; 所述空化段(12)包括下部空化腔(19)、夹持端(20)和最终引入端上部(25)，最终引入端上部(25)的上段为上宽下窄的锥形筒状，下段为最终引入端口；The cavitation section (12) includes a lower cavitation cavity (19), a clamping end (20) and an upper part of the final introduction end (25), and the upper section of the upper part of the final introduction end (25) is a conical cylinder that is wide at the top and narrow at the bottom The lower part is the final introduction port; 空化段(12)的上端与进水段(11)的下端相连，将上部空化腔(18)与下部空化腔(19)相接形成完整的空化腔，空化腔直径
Figure DEST_PATH_BDA0002422565970000021
为进水端收缩端口直径
Figure DEST_PATH_BDA0002422565970000022
的3~5倍；The upper end of the cavitation section (12) is connected with the lower end of the water inlet section (11), and the upper cavitation cavity (18) and the lower cavitation cavity (19) are connected to form a complete cavitation cavity, and the diameter of the cavitation cavity is
Figure DEST_PATH_BDA0002422565970000021
The diameter of the shrink port for the inlet end
Figure DEST_PATH_BDA0002422565970000022
3~5 times of ; 所述出水段(13)包括位于其上段的最终引入端下部(21)和位于其下段的出口(22)，出水段(13)与所述夹持端(20)可拆卸相连，将最终引入端上部(25)与最终引入端下部(21)相接形成完整的最终引入端；所述出口(22)为上窄下宽的椭圆形锥形筒状；The water outlet section (13) includes a lower portion (21) of the final introduction end located in the upper section thereof and an outlet (22) located in the lower section thereof. The upper part (25) of the end is connected with the lower part (21) of the final introduction end to form a complete final introduction end; the outlet (22) is an elliptical conical cylindrical shape with a narrow upper part and a lower width; 所述进水端收缩端口直径
Figure DEST_PATH_BDA0002422565970000023
为1~2mm；所述最终引入端口直径
Figure DEST_PATH_BDA0002422565970000024
为0.3~ 0.5mm；The diameter of the shrinkage port of the inlet end
Figure DEST_PATH_BDA0002422565970000023
1~2mm; the final introduction port diameter
Figure DEST_PATH_BDA0002422565970000024
is 0.3~ 0.5mm; 所述出口(22)的出口端半长轴距离a为出口端半短轴距离b的3~5倍；出口端半短轴距离b为1~2mm。The semi-major axis distance a of the outlet end of the outlet (22) is 3-5 times the semi-minor axis distance b of the outlet end; the semi-minor axis distance b of the outlet end is 1-2 mm. 2.根据权利要求1所述的一种用于降低全场焊接残余应力的高压水射流喷嘴，其特征在于，所述进水端口(17)的进水端收缩角θ 2为15°～30°；所述最终引入端上部(25)的上段的最终引入端收缩角θ 3为90°～120°。2 . The high-pressure water jet nozzle for reducing the residual stress of full-field welding according to claim 1 , wherein the water inlet end constriction angle θ 2 of the water inlet port (17) is 15° to 30° 2. 3 . °; the final lead-in end constriction angle θ3 of the upper section of the upper part (25) of the final lead - in end is 90°˜120°. 3.根据权利要求1所述的一种用于降低全场焊接残余应力的高压水射流喷嘴，其特征在于，进水端口高度H1为10-15mm；空化腔高度H2为15-20mm；最终引入端高度H3为5-10mm；出口端高度H4为20-40mm。3. The high-pressure water jet nozzle for reducing the residual stress of full-field welding according to claim 1 , wherein the height H1 of the water inlet port is 10-15mm; the height H2 of the cavitation cavity is 15-20mm ; The final inlet height H 3 is 5-10mm; the outlet end height H 4 is 20-40mm. 4.一种用于降低全场焊接残余应力的高压水射流装置，其特征在于，包括权利要求1-3任一项所述的用于降低全场焊接残余应力的高压水射流喷嘴，还包括水射流喷嘴支撑系统、脉冲射流发生系统和水射流喷嘴主通道(10)；4. A high-pressure water jet device for reducing full-field welding residual stress, characterized in that it comprises the high-pressure water jet nozzle for reducing full-field welding residual stress according to any one of claims 1-3, and further comprising: a water jet nozzle support system, a pulse jet generation system and a water jet nozzle main channel (10); 所述水射流喷嘴支撑系统包括水射流喷丸移动小车(23)和设置在水射流喷丸移动小车(23)上的水射流喷嘴移动支撑架(6)；The water jet nozzle support system comprises a water jet shot peening moving trolley (23) and a water jet nozzle moving support frame (6) arranged on the water jet shot peening moving trolley (23); 所述水射流喷嘴主通道(10)安装在所述水射流喷嘴移动支撑架(6)上，其一端连接至高压水射流进水管道(5)，另一端与高压水射流喷嘴相连，通过水射流喷丸移动小车(23)的移动带动水射流喷嘴移动支撑架(6)、水射流喷嘴主通道(10)进而带动高压水射流喷嘴移动。The water jet nozzle main channel (10) is installed on the water jet nozzle moving support frame (6), one end of which is connected to the high-pressure water jet water inlet pipe (5), and the other end is connected to the high-pressure water jet nozzle, and the water The movement of the jet peening moving trolley (23) drives the water jet nozzle to move the support frame (6) and the water jet nozzle main channel (10), thereby driving the high pressure water jet nozzle to move. 5.根据权利要求4所述的一种用于降低全场焊接残余应力的高压水射流装置，其特征在于，所述高压水射流喷嘴为多个，每个高压水射流喷嘴上均设有水射流喷嘴流量控制阀(24)；所述水射流喷嘴主通道(10)包括主通道进水段(14)、主通道脉冲发生段(15)和若干个主通道出水段(16)，水射流喷嘴主通道(10)通过每个主通道出水段(16)分别与每个高压水射流喷嘴一一相通，主通道进水段(14)为前宽后窄的圆锥形，高压水射流自主通道进水段(14)进入，而后经主通道脉冲发生段(15)，产生脉冲射流，最后经主通道出水段(16)流至各单个高压水射流喷嘴。5 . The high-pressure water jet device for reducing the residual stress of full-field welding according to claim 4 , wherein there are multiple high-pressure water jet nozzles, and each high-pressure water jet nozzle is provided with water jets. 6 . The jet nozzle flow control valve (24); the water jet nozzle main channel (10) comprises a main channel water inlet section (14), a main channel pulse generation section (15) and several main channel water outlet sections (16), the water jet The main channel (10) of the nozzle is communicated with each high-pressure water jet nozzle one by one through each water outlet section (16) of the main channel, the water inlet section (14) of the main channel is conical with a wide front and a narrow back, and the high-pressure water jet is an independent channel. The water inlet section (14) enters, and then passes through the main channel pulse generation section (15) to generate a pulse jet, and finally flows to each single high-pressure water jet nozzle through the main channel water outlet section (16). 6.根据权利要求5所述的一种用于降低全场焊接残余应力的高压水射流装置，其特征在于，所述水射流喷嘴主通道(10)上还设有控制各自单个高压水射流喷嘴的流量调节阀(9)，用以控制每个高压水射流喷嘴的开启与关闭。6. A high-pressure water jet device for reducing the residual stress of full-field welding according to claim 5, characterized in that, the main channel (10) of the water jet nozzle is further provided with a control respective single high-pressure water jet nozzle The flow regulating valve (9) is used to control the opening and closing of each high-pressure water jet nozzle. 7.根据权利要求5所述的一种用于降低全场焊接残余应力的高压水射流装置，其特征在于，所述主通道进水段(14)的主通道进水段收缩角θ 1为5°～10°；相邻主通道出水段(16)间的中心距L为5-10mm。7. The high-pressure water jet device for reducing the residual stress of full-field welding according to claim 5, wherein the main channel water inlet section contraction angle θ1 of the main channel water inlet section ( 14 ) is 5°～10°; the center-to-center distance L between the water outlet sections (16) of adjacent main passages is 5-10mm. 8.根据权利要求5至7任一项所述的一种用于降低全场焊接残余应力的高压水射流装置，其特征在于，还包括脉冲射流发生系统，所述脉冲射流发生系统包括脉冲发生器(7)和与脉冲发生器(7)控制相连的超声发生装置(8)，所述脉冲发生器(7)与主通道脉冲发生段(15)相连。8. A high-pressure water jet device for reducing residual stress in full-field welding according to any one of claims 5 to 7, characterized in that, further comprising a pulse jet generation system, the pulse jet generation system comprising a pulse generator A generator (7) and an ultrasonic generating device (8) controlled and connected to a pulse generator (7), the pulse generator (7) being connected to the pulse generating section (15) of the main channel.
CN202010210306.5A 2020-03-24 2020-03-24 High-pressure water jet nozzle and device for reducing full-field welding residual stress Active CN111270060B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010210306.5A CN111270060B (en) 2020-03-24 2020-03-24 High-pressure water jet nozzle and device for reducing full-field welding residual stress

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010210306.5A CN111270060B (en) 2020-03-24 2020-03-24 High-pressure water jet nozzle and device for reducing full-field welding residual stress

Publications (2)

Publication Number Publication Date
CN111270060A CN111270060A (en) 2020-06-12
CN111270060B true CN111270060B (en) 2021-11-05

Family

ID=70995816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010210306.5A Active CN111270060B (en) 2020-03-24 2020-03-24 High-pressure water jet nozzle and device for reducing full-field welding residual stress

Country Status (1)

Country Link
CN (1) CN111270060B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112975581B (en) * 2021-02-09 2022-08-09 华东理工大学 Jet flow reinforced polishing integrated device and process
CN112974004B (en) * 2021-02-09 2022-08-09 华东理工大学 Jet nozzle for strengthening surface of limited part of aviation component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060118495A1 (en) * 2004-12-08 2006-06-08 Ilia Kondratalv Nozzle for generating high-energy cavitation
CN103056052B (en) * 2013-01-10 2016-04-06 中国海洋工程公司 A kind of Cavitation jet nozzle
CN108080159A (en) * 2017-12-25 2018-05-29 浙江工业大学 A kind of high pressure cavitation jet combines nozzle
CN109880988A (en) * 2019-01-30 2019-06-14 中国石油大学(华东) A method for eliminating welding residual stress based on high-pressure water jet strengthening technology
CN109702498B (en) * 2019-03-01 2021-02-26 江苏省特种设备安全监督检验研究院 Welding strengthening device based on high-pressure water jet technology

Also Published As

Publication number Publication date
CN111270060A (en) 2020-06-12

Similar Documents

Publication Publication Date Title
CN111270060B (en) High-pressure water jet nozzle and device for reducing full-field welding residual stress
CN109097544A (en) A kind of ultrasound kinetic energy shot-blast unit
US8739589B2 (en) Method and apparatus for surface strengthening of blisk blades
CN113714940A (en) Artificially submerged cavitation jet shot blasting device, working method thereof and combined nozzle
CN107385174B (en) A kind of device and method that material surface is strengthened using cavitating water jet
CN103805760B (en) A kind of method utilizing high-pressure water jet to eliminate welding residual stress
CN107385172A (en) A kind of device strengthened for metal surface cavitation jet
CN114434343A (en) Non-submerged cavitation water jet nozzle structure, strengthening device and application
CN110653667A (en) Laser-induced cavitation auxiliary liquid jet polishing device and nozzle for jet polishing
CN110744457A (en) A high-efficiency double cavitation abrasive jet nozzle
CN114952635A (en) Ultrasonic Cavitation Assisted Submerged Pulsating Air Jet Polishing System
CN217398930U (en) A non-submerged cavitation water jet device for eliminating welding residual stress with high efficiency
CN108672117A (en) A Static Momentum Enhanced Ejector with Adjustable Throat Area
CN112275463A (en) A Novel Self-excited Oscillation Pulse Cavitation Nozzle
CN103586551B (en) A kind of side milling electrode clamping device for high speed arc spraying electric discharge processing
CN112059924A (en) A fluid line jet polishing device and application method thereof
CN209476517U (en) A hand-held spray gun for strengthening welded joints with high-pressure water jets
CN107354289B (en) A kind of equipment reducing weld residual stress using high-pressure water jet
CN217398929U (en) Cavitation water jet device for treating dissimilar steel weld joint
CN112974004B (en) Jet nozzle for strengthening surface of limited part of aviation component
CN112975581B (en) Jet flow reinforced polishing integrated device and process
CN115781532A (en) Low-pressure and high-flow gas-mixed self-excited pulse double cavitation jet generator and cleaning device
CN112589694A (en) Pure water cavitation jet impact strengthening nozzle
CN219985071U (en) Composite cavitation jet nozzle for underwater cleaning robot
CN112609053B (en) Ultrasonic rolling strengthening device and system based on jet flow assistance

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant