CN114178654B - Welding circuit and portable adjustable impact welding machine - Google Patents

Welding circuit and portable adjustable impact welding machine Download PDF

Info

Publication number
CN114178654B
CN114178654B CN202111592791.8A CN202111592791A CN114178654B CN 114178654 B CN114178654 B CN 114178654B CN 202111592791 A CN202111592791 A CN 202111592791A CN 114178654 B CN114178654 B CN 114178654B
Authority
CN
China
Prior art keywords
energy storage
storage module
welding
thermocouple
normally open
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
CN202111592791.8A
Other languages
Chinese (zh)
Other versions
CN114178654A (en
Inventor
何灿阳
韩群霞
毕景良
郗昭
昝元锋
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.)
Nuclear Power Institute of China
Original Assignee
Nuclear Power Institute of 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 Nuclear Power Institute of China filed Critical Nuclear Power Institute of China
Priority to CN202111592791.8A priority Critical patent/CN114178654B/en
Publication of CN114178654A publication Critical patent/CN114178654A/en
Application granted granted Critical
Publication of CN114178654B publication Critical patent/CN114178654B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • 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
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Protection Of Static Devices (AREA)

Abstract

The invention discloses a welding circuit and a portable adjustable impact welding machine, wherein the welding circuit comprises a control module and an energy storage module with an adjustable electric energy value, the control module controls the working state of the energy storage module, and the working state comprises a charging state and a discharging state; when the energy storage module is in a discharging state, the electric energy released by the energy storage module welds an object to be welded to the surface to be welded; the energy storage module comprises a plurality of discharge branches, wherein the discharge branches are connected in parallel, and have the same structure and comprise capacitors and switches which are connected in series. The invention aims to provide a welding circuit and a portable adjustable impact welding machine, which can ensure that the end head of a thermocouple is reliably connected with the surface of a metal to be measured, and can avoid the damage of the thermocouple caused by welding.

Description

Welding circuit and portable adjustable impact welding machine
Technical Field
The invention relates to the technical field of thermal measuring instruments, in particular to a welding circuit and a portable adjustable impact welding machine.
Background
In experimental research, it is often necessary to measure the temperature at multiple points on a metal surface, and it is critical to reliably fix the thermocouple and allow the thermocouple to fully contact the metal surface, while minimizing the effect of the thermocouple on the surface temperature field.
The usual thermocouple surface fixing modes are: surface welding, metal sheet crimping, clamp fixing or adhesive film thermocouple and other methods. The surface welding is to embed the thermocouple into the surface of a preset hole or a measured point and then weld and fix the thermocouple by silver brazing, the thermocouple can be reliably fixed, and the thermocouple can fully contact the metal surface, but the thermocouple is often damaged due to improper welding temperature control, and meanwhile, the surface area occupied by welding is larger, so that the temperature field is influenced to a certain extent; the metal sheet crimping is to press the thermocouple under the stainless steel sheet, discharge through the copper column tip of the spot welder, spot weld the metal sheet to the surface of the apparatus locally, can fix the thermocouple reliably through the multipoint welding, this kind of mode will not damage the thermocouple, can fix the thermocouple reliably, but the thermocouple can not fully contact with surface, and the metal sheet is great to the surface temperature field influence; the clamp fixing mode is suitable for measuring the surface temperature of a pipeline, and is not suitable for a large experimental body, particularly a body with a complex structure; the adhesive film thermocouple cannot be used at higher temperature under the influence of glue, and meanwhile, the adhesive film thermocouple has influence on a temperature field due to larger adhesive area.
Disclosure of Invention
The invention aims to provide a welding circuit and a portable adjustable impact welding machine, which can ensure that the end head of a thermocouple is reliably connected with the surface of a metal to be measured, and can avoid the damage of the thermocouple caused by welding.
The invention is realized by the following technical scheme:
in one aspect of the application, a welding circuit is provided, which comprises a control module and an energy storage module with an adjustable electric energy value, wherein the control module controls the working state of the energy storage module, and the working state comprises a charging state and a discharging state; when the energy storage module is in a discharging state, the electric energy released by the energy storage module welds an object to be welded to the surface to be welded;
the energy storage module comprises a plurality of discharge branches, wherein the discharge branches are connected in parallel, and have the same structure and comprise capacitors and switches which are connected in series.
In the test of a thermodynamic measuring instrument for nuclear power, it is often required to measure the temperature of multiple points on a metal surface, and a common measurement mode at present is to fix a plurality of thermocouples on the metal surface for measurement. How to reliably fix the thermocouple and allow the thermocouple to fully contact the metal surface, and at the same time, reducing the influence of the thermocouple on the surface temperature field as much as possible is a key to accurate temperature measurement.
The thermocouple surface fixing modes commonly used at present are as follows: surface welding, metal sheet crimping, clamp fixing or adhesive film thermocouple and other methods. The surface welding is to embed the thermocouple into the surface of a preset hole or a measured point and then weld and fix the thermocouple by silver brazing, so that the thermocouple can be reliably fixed and can fully contact the metal surface, but the thermocouple is often damaged due to improper welding temperature control, and meanwhile, the surface area occupied by welding is larger, so that the temperature field is influenced to a certain extent; the metal sheet crimping is to press the thermocouple under the stainless steel sheet, discharge through the copper column tip of the spot welder, spot weld the metal sheet to the surface of the apparatus locally, can fix the thermocouple reliably through the multipoint welding, this kind of mode will not damage the thermocouple, can fix the thermocouple reliably, but the thermocouple can not fully contact with surface, and the metal sheet is great to the surface temperature field influence; the clamp fixing mode is suitable for measuring the surface temperature of a pipeline, and is not suitable for a large experimental body, particularly a body with a complex structure; the adhesive film thermocouple cannot be used at higher temperature under the influence of glue, and meanwhile, the adhesive film thermocouple has influence on a temperature field due to larger adhesive area. Based on this, the present application provides a new welding circuit, including energy storage module that energy storage value is adjustable, because the energy that energy storage module stored is adjustable, namely: the discharge energy during welding can be adjusted, so that the discharge energy of the energy storage module can be reasonably adjusted according to the thickness of the thermocouple to be welded and the smoothness of the temperature measuring surface, and the thermocouple can be prevented from falling off easily after being welded with the metal surface due to the fact that the discharge energy is too small during welding of the thermocouple, and the thermocouple is prevented from being damaged after welding due to the fact that the discharge energy is too large. Specifically, the energy storage module in this embodiment includes many discharge branches, and the parallel connection of discharge branches and the structure of discharge branch are the same, all include electric capacity and the switch of establishing ties, therefore, through arranging the combination to the switch of discharge branch, select the size that reasonable quantity electric capacity can be used to control discharge current to reach best welding effect.
Preferably, in order to ensure that the energy storage module is not charged by the control module when discharging; when the energy storage module is charged, no voltage is output at the output end of the energy storage module, so that the personal safety of a user is ensured. The control module in the scheme comprises a power switch, a normally-open self-reset switch, a normally-closed self-reset switch and a relay with three normally-open nodes and one normally-closed node;
the power switch, the normally open self-reset switch, the normally closed self-reset switch and the relay are connected in series to form a closed loop, and the input end of the energy storage module is connected in parallel to the power switchBoth ends of the switch, and a normally open node KA of the relay -1 The normally open self-reset switch is arranged at two ends of the normally open self-reset switch in parallel, and a normally open node KA of the relay -2 Normally open node KA -3 The normally closed node KA of the relay is arranged at the input end of the energy storage module in series -4 The energy storage module is arranged at the output end of the energy storage module in series.
This scheme has set up a button that charges certainly specially when charging, can avoid the control module to switch on the power after direct for energy storage module charges. Through adopting a normally open from reset switch (charge button) SB1, a normally closed from reset switch (discharge button) SB2 and a relay KA of taking a normally closed contact of three normally open contacts, realized pressing charge button SB1 back, the normally open contact of relay is automatic to be closed, normally closed contact is automatic to be disconnected, control module charges for the energy storage module automatically, when charging the automatic stop behind the charging voltage that the potentiometre set for, in-process of charging, because normally closed contact disconnection, the output of energy storage module is uncharged, can ensure user's personal safety. When the discharging button SB2 is pressed, the normally open contact of the relay is automatically opened, the normally closed contact is automatically closed, the control module is disconnected with the energy storage module, the energy storage module outputs energy instantly, and the thermocouple end and the contact surface part are melted instantly by the energy due to the fact that the contact resistance of the thermocouple end and the welded surface is large, so that the thermocouple is welded to the metal surface.
Preferably, the control module further includes a boost rectifier, the input end of the boost rectifier is arranged at two ends of the power switch in parallel, and the first output port of the boost rectifier and the normally open node KA -2 A second output port of the boost rectifier is connected with the normally open node KA -3 And (5) connection.
Because the capacitor has the characteristic of passing alternating current and resisting direct current, the capacitor can charge the energy storage module, the energy storage module can only be charged with direct current, and the commonly used commercial power is 220V alternating current, so that the welding circuit is convenient for a user to use, and the embodiment is also provided with a rectifier for converting the commercial power into direct current; meanwhile, considering the problem that 220V voltage is small and the object to be welded is easy to fall off when the object to be welded is thick thermocouple, iron, nickel, copper, stainless steel and other metals, the rectifier in the embodiment is set as a boost rectifier, and the voltage is boosted during rectification.
Preferably, the device further comprises an adjustable potentiometer, wherein a first static contact of the adjustable potentiometer is connected with a first output port of the boost rectifier, and a second static contact of the adjustable potentiometer is connected with a second output port of the boost rectifier and the normally open node KA -3 The movable contact of the adjustable potentiometer is connected with the normally open node KA -2 And (5) connection.
In the scheme, the charging voltage acting on the energy storage module can be linearly regulated by arranging the adjustable potentiometer, so that a user can reasonably regulate the discharging voltage of the energy storage module according to the thickness of the object to be welded and the surface smoothness of the temperature measurement. Compared with the method that the current output by the energy storage module is regulated only by controlling the quantity of the charging and discharging capacitors, after the adjustable potentiometer is added, the output current of the energy storage module has a larger regulating range, and the application scene is wider. In order to facilitate the user to know the discharging voltage of the current energy storage module, a digital voltmeter is preferably further arranged on the energy storage module in parallel and used for displaying the voltage of the current energy storage module.
Preferably, the safety tube 1FU is further included, and the safety tube 1FU is arranged in series on the control module.
Preferably, the booster rectifier further comprises a fuse tube 2FU, and the fuse tube 2FU is arranged at the input end of the booster rectifier in series.
In this scheme, through setting up insurance tube 1FU and insurance tube 2FU, can avoid damaging the electronic component in the circuit when certain return circuit appears short-circuiting.
Preferably, the control module further comprises an isolation transformer, the power switch is arranged on the primary side of the isolation transformer, and the normally open self-reset switch, the normally closed self-reset switch, the relay, the fuse 1FU and the boost rectifier are arranged on the secondary side of the isolation transformer.
In the scheme, the isolating transformer is arranged, so that the fuse can be prevented from being burnt out when the discharge wire is grounded.
Preferably, the object to be welded is a thermocouple.
In a second aspect of the present application, there is provided a portable adjustable impact welder comprising a housing and a welding rod, wherein a welding circuit as described above is provided in the housing, and wherein an output of the energy storage module is electrically connected to the welding rod copper.
Preferably, the welding rod is provided as a copper pillar.
Compared with the prior art, the invention has the following advantages and beneficial effects:
since the energy stored by the energy storage module is adjustable, namely: the discharge energy during welding can be adjusted, so that the discharge energy of the energy storage module can be reasonably adjusted according to the thickness of the thermocouple to be welded and the smoothness of the temperature measuring surface, and the thermocouple can be prevented from falling off easily after being welded with the metal surface due to the fact that the discharge energy is too small during welding of the thermocouple, and the thermocouple is prevented from being damaged after welding due to the fact that the discharge energy is too large.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
fig. 1 is a schematic diagram of a welding circuit according to the present invention.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The embodiment provides a welding circuit, as shown in fig. 1, which comprises a control module and an energy storage module with an adjustable electric energy value, wherein the control module controls the working state of the energy storage module, and the working state comprises a charging state and a discharging state; when the energy storage module is in a discharging state, the electric energy released by the energy storage module welds the object to be welded to the surface to be welded;
the energy storage module comprises a plurality of discharge branches, the discharge branches are connected in parallel, the structures of the discharge branches are the same, and the discharge branches comprise capacitors and switches which are connected in series, as shown in fig. 1.
In the test of a thermodynamic measuring instrument for nuclear power, it is often required to measure the temperature of multiple points on a metal surface, and a common measurement mode at present is to fix a plurality of thermocouples on the metal surface for measurement. How to reliably fix the thermocouple and allow the thermocouple to fully contact the metal surface, and at the same time, reducing the influence of the thermocouple on the surface temperature field as much as possible is a key to accurate temperature measurement.
The thermocouple surface fixing modes commonly used at present are as follows: surface welding, metal sheet crimping, clamp fixing or adhesive film thermocouple and other methods. The surface welding is to embed the thermocouple into the surface of a preset hole or a measured point and then weld and fix the thermocouple by silver brazing, so that the thermocouple can be reliably fixed and can fully contact the metal surface, but the thermocouple is often damaged due to improper welding temperature control, and meanwhile, the surface area occupied by welding is larger, so that the temperature field is influenced to a certain extent; the metal sheet crimping is to press the thermocouple under the stainless steel sheet, discharge through the copper column tip of the spot welder, spot weld the metal sheet to the surface of the apparatus locally, can fix the thermocouple reliably through the multipoint welding, this kind of mode will not damage the thermocouple, can fix the thermocouple reliably, but the thermocouple can not fully contact with surface, and the metal sheet is great to the surface temperature field influence; the clamp fixing mode is suitable for measuring the surface temperature of a pipeline, and is not suitable for a large experimental body, particularly a body with a complex structure; the adhesive film thermocouple cannot be used at higher temperature under the influence of glue, and meanwhile, the adhesive film thermocouple has influence on a temperature field due to larger adhesive area. Based on this, this embodiment provides a new welding circuit, including the energy storage module that the energy storage value is adjustable, because the energy that the energy storage module stored is adjustable, namely: the discharge energy during welding can be adjusted, so that the discharge energy of the energy storage module can be reasonably adjusted according to the thickness of the thermocouple to be welded and the smoothness of the temperature measuring surface, and the thermocouple can be prevented from falling off easily after being welded with the metal surface due to the fact that the discharge energy is too small during welding of the thermocouple, and the thermocouple is prevented from being damaged after welding due to the fact that the discharge energy is too large. Specifically, the energy storage module in this embodiment includes many discharge branches, and the parallel connection of discharge branches and the structure of discharge branch are the same, all include electric capacity and the switch of establishing ties, therefore, through arranging the combination to the switch of discharge branch, select the size that reasonable quantity electric capacity can be used to control discharge current to reach best welding effect.
Further, in order to ensure that the control module does not charge the energy storage module when the energy storage module discharges; when the energy storage module is charged, no voltage is output at the output end of the energy storage module, so that the personal safety of a user is ensured. The control module in the scheme comprises a power switch SA0, a normally-open self-resetting switch SB1, a normally-closed self-resetting switch SB2 and a relay KA with three normally-open nodes and one normally-closed node;
the power switch SA0, the normally-open self-resetting switch SB1, the normally-closed self-resetting switch SB2 and the relay KA are connected in series to form a closed loop, the input end of the energy storage module is arranged at two ends of the power switch SA0 in parallel, and the normally-open node KA of the relay -1 The normally open nodes KA of the relay KA are arranged at two ends of the normally open self-resetting switch SB1 in parallel -2 Normally open node KA -3 The normally closed node KA of the relay KA is arranged at the input end of the energy storage module in series -4 The energy storage module is connected in series with the output end of the energy storage module.
The scheme realizes that after the charging button SB1 is pressed down, the normally open contact (KA -1 、KA -2 、KA -3 ) Automatic closing, normally closed contact (KA) -4 ) Automatically disconnecting, wherein the control module automatically charges the energy storage module, and automatically stops when the energy storage module is charged to the charging voltage set by the potentiometer; during charging, the normally closed contact (KA -4 ) The output end of the energy storage module is not electrified after disconnection, so that the personal safety of a user can be ensured. When the discharge button SB2 is pressed, the relay KA is normally openedContact (KA) -1 、KA -2 、KA -3 ) Automatic open, normally closed contact (KA) -4 ) The automatic closing, control module and energy storage module disconnection, energy storage module export energy in the twinkling of an eye, because thermocouple end and the surface to be welded contact resistance is great, and the energy can be in the twinkling of an eye the thermocouple end and contact surface part dissolve to weld the thermocouple to the metal surface.
Further, the control module in this embodiment further includes a boost rectifier VT, an input end of the boost rectifier VT is disposed at two ends of the power switch SA0 in parallel, and a first output port of the boost rectifier VT and the normally open node KA -2 The second output port of the boost rectifier VT is connected with the normally open node KA -3 And (5) connection.
Because the capacitor has the characteristic of passing alternating current and resisting direct current, the capacitor can charge the energy storage module, the energy storage module can only be charged with direct current, and the commonly used commercial power is 220V alternating current, so that the welding circuit is convenient for a user to use, and the embodiment is also provided with a rectifier for converting the commercial power into direct current; meanwhile, considering the problem that 220V is smaller in voltage and easy to fall off when the object to be welded is thick thermocouple, iron, nickel, copper, stainless steel and other metals, the rectifier in the embodiment is set as a boost rectifier VT, and the voltage is boosted while rectifying.
Further, the control module in this embodiment further includes an adjustable potentiometer Rp, a first stationary contact of the adjustable potentiometer Rp is connected to the first output port of the boost rectifier, and a second stationary contact of the adjustable potentiometer Rp is connected to the second output port of the boost rectifier and the normally open node KA -3 Movable contact and normally open node KA of adjustable potentiometer Rp -2 And (5) connection.
In the scheme, the charging voltage acting on the energy storage module can be linearly regulated by arranging the adjustable potentiometer Rp, so that a user can further reasonably regulate the discharging voltage of the energy storage module according to the thickness of a to-be-welded object and the surface smoothness of the temperature measurement. Compared with the method that the current output by the energy storage module is regulated only by controlling the quantity of the charge and discharge capacitors, after the adjustable potentiometer Rp is added, the output current of the energy storage module has a larger regulating range, and the application scene is wider. In order to facilitate the user to know the discharging voltage of the current energy storage module, a digital voltmeter SV may be preferably further disposed in parallel on the energy storage module for displaying the voltage of the current energy storage module.
Further, in order to avoid damaging electronic components in the circuit when a short circuit occurs in a certain circuit (control module and/or energy storage module), the embodiment further includes a fuse 1FU and a fuse 2FU, where the fuse 1FU is serially arranged in the control module and the fuse 2FU is serially arranged at the input end of the boost rectifier.
Further, the control module further comprises an isolation transformer T1, the power switch SA0 is arranged on the primary side of the isolation transformer T1, and the normally-open self-reset switch SB1, the normally-closed self-reset switch SB2, the relay KA, the fuse tube 1FU and the boost rectifier VT are arranged on the secondary side of the isolation transformer T1.
In the scheme, the isolating transformer T1 is arranged, so that the fuse tube can be prevented from being burnt when the output end of the energy storage module is grounded.
Further, the object to be welded in the present embodiment is provided as a thermocouple.
Example 2
The embodiment provides a portable adjustable impact welding machine, which comprises a shell and a welding rod, wherein a welding circuit as provided in the embodiment 1 is arranged in the shell, and the output end of an energy storage module is electrically connected with the copper of the welding rod.
Further, the solder stick in the present embodiment is provided as a copper pillar.
In the test of a thermodynamic measuring instrument for nuclear power, it is often required to measure the temperature of multiple points on a metal surface, and a common measurement mode at present is to fix a plurality of thermocouples on the metal surface for measurement. How to reliably fix the thermocouple and allow the thermocouple to fully contact the metal surface, and at the same time, reducing the influence of the thermocouple on the surface temperature field as much as possible is a key to accurate temperature measurement.
The thermocouple surface fixing modes commonly used at present are as follows: surface welding, metal sheet crimping, clamp fixing or adhesive film thermocouple and other methods. The surface welding is to embed the thermocouple into the surface of a preset hole or a measured point and then weld and fix the thermocouple by silver brazing, so that the thermocouple can be reliably fixed and can fully contact the metal surface, but the thermocouple is often damaged due to improper welding temperature control, and meanwhile, the surface area occupied by welding is larger, so that the temperature field is influenced to a certain extent; the metal sheet crimping is to press the thermocouple under the stainless steel sheet, discharge through the copper column tip of the spot welder, spot weld the metal sheet to the surface of the apparatus locally, can fix the thermocouple reliably through the multipoint welding, this kind of mode will not damage the thermocouple, can fix the thermocouple reliably, but the thermocouple can not fully contact with surface, and the metal sheet is great to the surface temperature field influence; the clamp fixing mode is suitable for measuring the surface temperature of a pipeline, and is not suitable for a large experimental body, particularly a body with a complex structure; the adhesive film thermocouple cannot be used at higher temperature under the influence of glue, and meanwhile, the adhesive film thermocouple has influence on a temperature field due to larger adhesive area. Based on this, this embodiment provides a portable adjustable impact welding machine, including energy storage module that energy storage value is adjustable, because energy storage module stores energy adjustable, namely: the discharge energy during welding can be adjusted, so that the discharge energy of the energy storage module can be reasonably adjusted according to the thickness of the thermocouple to be welded and the smoothness of the temperature measuring surface, and the thermocouple can be prevented from falling off easily after being welded with the metal surface due to the fact that the discharge energy is too small during welding of the thermocouple, and the thermocouple is prevented from being damaged after welding due to the fact that the discharge energy is too large. Specifically, the energy storage module in this embodiment includes many discharge branches, and the parallel connection of discharge branches and the structure of discharge branch are the same, all include electric capacity and the switch of establishing ties, therefore, through arranging the combination to the switch of discharge branch, select the size that reasonable quantity electric capacity can be used to control discharge current to reach best welding effect.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (6)

1. The welding circuit is characterized by comprising a control module and an energy storage module with an adjustable electric energy value, wherein the control module controls the working state of the energy storage module, and the working state comprises a charging state and a discharging state; when the energy storage module is in a discharging state, the electric energy released by the energy storage module welds an object to be welded to the surface to be welded; the energy storage module comprises a plurality of discharge branches, wherein the discharge branches are connected in parallel, have the same structure and comprise capacitors and switches which are connected in series; the control module comprises a power switch, a normally open self-reset switch, a normally closed self-reset switch and a relay with three normally open nodes and one normally closed node; the power switch, the normally open self-reset switch, the normally closed self-reset switch and the relay are connected in series to form a closed loop, the input ends of the energy storage modules are arranged at two ends of the power switch in parallel, and normally open nodes KA of the relay are connected in series −1 The normally open self-reset switch is arranged at two ends of the normally open self-reset switch in parallel, and a normally open node KA of the relay −2 Normally open node KA −3 The normally closed node KA of the relay is arranged at the input end of the energy storage module in series −4 The energy storage module is connected in series with the output end of the power supply module; the control module further comprises a boost rectifier, the input end of the boost rectifier is arranged at two ends of the power switch in parallel, and the second output port of the boost rectifier is connected with the normally open node KA −3 Connecting; the adjustable potentiometer is characterized by further comprising an adjustable potentiometer, wherein a first fixed contact of the adjustable potentiometer is connected with a first output port of the boost rectifier, and a second fixed contact of the adjustable potentiometer is connected with a second output port of the boost rectifier and the second output port of the boost rectifier
Normally open node KA −3 The movable contact of the adjustable potentiometer is connected with the normally open node KA −2 Connecting; the object to be welded is a thermocouple.
2. The welding circuit of claim 1, further comprising a fuse 1FU, the fuse 1FU being disposed in series with the control module.
3. A welding circuit according to claim 2, further comprising a fuse 2FU, said fuse 2FU being arranged in series at the input of said boost rectifier.
4. A welding circuit according to claim 3, wherein the control module further comprises an isolation transformer, the power switch being arranged on a primary side of the isolation transformer, the normally open self-reset switch, the normally closed self-reset switch, the relay, the fuse 1FU and the boost rectifier being arranged on a secondary side of the isolation transformer.
5. A portable adjustable impact welding machine, comprising a housing and a welding rod, wherein a welding circuit as claimed in any one of claims 1-4 is arranged in the housing, and the output end of the energy storage module is electrically connected with the welding rod.
6. The portable adjustable impact welder of claim 5, wherein the welding rod is configured as a copper post.
CN202111592791.8A 2021-12-23 2021-12-23 Welding circuit and portable adjustable impact welding machine Active CN114178654B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111592791.8A CN114178654B (en) 2021-12-23 2021-12-23 Welding circuit and portable adjustable impact welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111592791.8A CN114178654B (en) 2021-12-23 2021-12-23 Welding circuit and portable adjustable impact welding machine

Publications (2)

Publication Number Publication Date
CN114178654A CN114178654A (en) 2022-03-15
CN114178654B true CN114178654B (en) 2023-07-04

Family

ID=80544860

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111592791.8A Active CN114178654B (en) 2021-12-23 2021-12-23 Welding circuit and portable adjustable impact welding machine

Country Status (1)

Country Link
CN (1) CN114178654B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1172766C (en) * 2002-04-22 2004-10-27 俞岳皋 Energy-storing multifunctional welding machine
TW201134589A (en) * 2010-04-01 2011-10-16 Hon Hai Prec Ind Co Ltd Welding current generating apparatus
CN201913403U (en) * 2010-12-21 2011-08-03 北京工业大学 Desk-top lightweight digital display and energy storage dual-purpose machine for spot soldering and tin soldering
CN103252569B (en) * 2013-05-27 2016-05-18 北京工业大学 Portable minisize reserve energy spot welding machine
CN203607815U (en) * 2013-09-30 2014-05-21 合肥南南电力保护设备有限公司 Safety protection circuit of energy storage circuit of explosive discharge type large-current rapid on-off device
CN206316530U (en) * 2016-11-30 2017-07-11 岭东核电有限公司 Use for laboratory precision pulse welding machine

Also Published As

Publication number Publication date
CN114178654A (en) 2022-03-15

Similar Documents

Publication Publication Date Title
CN103252569B (en) Portable minisize reserve energy spot welding machine
JP4426693B2 (en) Metal member joining method and reflow soldering method
US4459452A (en) Ball bonding of wire
CN114178654B (en) Welding circuit and portable adjustable impact welding machine
US5021625A (en) Pre-resistance-welding resistance check
US4774449A (en) Transformerless battery charger in combination with a battery, and method of charging a battery
CN209417143U (en) A kind of pulse power test macro
US3423560A (en) Stored energy electric stud welding apparatus
KR100451411B1 (en) Micro-welder
JP4441720B2 (en) Failure point search device
TWM306532U (en) Welding machine
IL127932A (en) Resistance welding with an electrochemical capacitor as the current source
US3050618A (en) Portable spot welding tool
US3657512A (en) Tip welding means
CN217493008U (en) Welding device for quickly welding temperature probe
US2897338A (en) Metal member fusing device
US2871337A (en) Electrical control system for percussion welder
CN215120104U (en) Thermal release mechanism for surge protector
CN215599315U (en) Join in marriage net and protect equipment detection device successively
Eawsakul et al. Development of a Portable Spot Welder
JPH10328838A (en) Capacitor charging/discharging stud welding equipment
CN109725253B (en) Thermal memory test device for control and protection switch electric appliance and application
JP2931871B1 (en) Arc time measuring device for welding machine
CN200995314Y (en) Thermal electric double collision welder
JPS5938875B2 (en) Pressure/release detection device for resistance welding electrodes

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