CN113001048A - Valve welding and air tightness detection integrated device - Google Patents
Valve welding and air tightness detection integrated device Download PDFInfo
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- CN113001048A CN113001048A CN202110117560.5A CN202110117560A CN113001048A CN 113001048 A CN113001048 A CN 113001048A CN 202110117560 A CN202110117560 A CN 202110117560A CN 113001048 A CN113001048 A CN 113001048A
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- 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
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- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
Abstract
The invention belongs to the technical field of valve welding, and particularly relates to a valve welding and air tightness detection integrated device which comprises a workbench, a rotary table, a welding robot, a butt joint mechanism, a control and display mechanism, a mounting frame, an air tightness detection mechanism, a leak source detection mechanism and a water collection table. The method comprises the steps that a first air cylinder is started to drive two first plugs on the left side and the right side of a rotary table to move relatively, two ends of a valve are plugged, an air pump is started, compressed air is injected into the valve through an air inlet pipe and an air groove to be pressurized, meanwhile, the air injected by the valve enters an air outlet pipe through the air groove of the other first plug and then enters a digital display pressure gauge through a pipe opening of the air outlet pipe, the digital display pressure gauge displays an air pressure value, and if the digital display pressure gauge displays that the air pressure value is equal to the air pressure value applied by the air pump, the air tightness of; if the pressure value displayed by the digital display pressure gauge is lower than the pressure value applied by the air pump, the sealing tightness of the welded valve is poor, and air pressure leakage exists.
Description
Technical Field
The invention relates to the technical field of valve welding, in particular to a valve welding and air tightness detection integrated device.
Background
The valve is a pipeline accessory used for opening and closing a pipeline, controlling the flow direction, and adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, has functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflowing and relieving pressure, and can be divided into a shut-off valve, a check valve, an adjusting valve and the like according to the functions.
In the production process of valve, need weld the dress to valve body and disk seat, however, in welding process, defects such as gas pocket, crackle, loose, shrinkage cavity appear easily, and above-mentioned defect is slightly unsettled a bit, need detect, and current valve welding equipment and check out test set are split type, and equipment occupation space is great, has prolonged the production line, and leads to the valve to be comparatively loaded down with trivial details from the welding to the whole process that detects, has consumed a large amount of manpowers and time.
In order to solve the problem, the application provides a valve welding and air tightness detection integrated device.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides an integrated device for valve welding and air tightness detection, which has the advantages of integrating valve welding and detection, shortening the production line and saving labor and time.
(II) technical scheme
In order to solve the technical problems, the invention provides a valve welding and air tightness detection integrated device which comprises a workbench, a rotary table, a welding robot, a butt joint mechanism, a control and display mechanism, a mounting frame, an air tightness detection mechanism, a leak source detection mechanism and a water collection table, wherein the rotary table is arranged in the middle of the workbench, the welding robot and the control and display mechanism are respectively arranged on two sides of the rotary table, and the butt joint mechanism is arranged behind the rotary table;
the top of the workbench is fixedly provided with four mounting frames which are annularly arrayed on the periphery of the rotary table, the two mounting frames which are bilaterally symmetrical relative to the rotary table are provided with air tightness detection mechanisms for performing air detection on welding seams of welded valves, and the two mounting frames which are bilaterally symmetrical relative to the rotary table are provided with leakage point detection mechanisms for performing water detection on leakage points of welded valves;
gas tightness detection mechanism includes two first cylinders, two first end caps, air pump, digital display manometer, intake pipe and outlet duct, two first cylinder difference fixed mounting is on the mounting bracket of the revolving stage left and right sides, and the one end difference fixedly connected with one of two first cylinder piston rods first end cap, air pump and digital display manometer are all installed in the inside of workstation, and the gas transmission end of air pump and digital display manometer connect gas department to be connected with respectively intake pipe and outlet duct, two the gas groove has all been seted up at the middle part of first end cap, two the one end intercommunication valve in gas groove, and intake pipe and outlet duct are connected respectively to the other end in two gas grooves.
Preferably, still be connected with gasbag sealing mechanism on the gas tightness detection mechanism, gasbag sealing mechanism includes support piece, gasbag, air flue, fills gassing equipment and gas-supply pipe, support piece fixed mounting is in the one end of first end cap, the gasbag cladding in support piece the outside and with form the inner chamber between the support piece, the one end intercommunication inner chamber of air flue, and the other end of air flue wear out support piece and first end cap and the gas-supply pipe is connected, the other end of gas-supply pipe with fill the gassing equipment and connect, fill gassing equipment and set up in the inside of workstation.
Preferably, leak source detection mechanism includes two second cylinders, two second end caps, water tank, circulating pump, raceway and wet return, two the second cylinder is fixed mounting respectively on two mounting brackets of revolving stage front and back, and one of the one end difference fixedly connected with of two second cylinder piston rods the second end cap, two the water course has all been seted up at the middle part of second end cap, water tank and circulating pump set up in the inside of workstation, the end of intaking of circulating pump is connected with the bottom of water tank, and the play water end fixedly connected with of circulating pump the raceway, the one end of wet return is connected the top of water tank, two the one end intercommunication valve in water course, and raceway and wet return are connected respectively to the other end of two water courses.
Preferably, the mounting bracket includes mounting, regulating part, bolt and adjustment tank, the mounting passes through screw fixed mounting on the workstation, and the middle part of mounting is equipped with the adjustment tank, the adjustment tank is followed the length direction of mounting upwards runs through the mounting, the regulating part passes adjustment tank fixed mounting on the mounting through the bolt.
A use method of an integrated device for valve welding and air tightness detection comprises the following operation steps:
s1, after welding of the valve is completed, starting a first air cylinder to drive a piston rod to extend, enabling two first plugs on the left side and the right side of a rotary table to move relatively, and plugging two ends of the valve;
s2, starting inflation and deflation equipment, injecting gas into the air passage through the gas conveying pipe, injecting the gas into an inner cavity formed between the air bag and the support piece through the air passage, inflating the air bag, and enabling the inflated air bag to be tightly attached to the inner wall of the valve;
s3, starting an air pump, injecting compressed air into the valve through an air inlet pipe and an air groove to be pressurized, simultaneously, injecting the air injected by the valve into an air outlet pipe through the air groove of the other first plug, then, injecting the air into a digital display pressure gauge through a pipe orifice of the air outlet pipe, and displaying an air pressure value by the digital display pressure gauge; if the digital display pressure gauge shows that the air pressure value is lower than the air pressure value applied by the air pump, the sealing airtightness of the welded valve is poor, and air pressure leakage exists;
s4, if air pressure leaks, rotating the valve by using the rotary table, and starting the second air cylinder to drive the piston rod to extend, so that the two second plugs on the front side and the rear side of the rotary table move relatively to plug the two ends of the valve;
s5, after plugging is completed, a circulating pump is started, the indigo water solution stored in the water tank is injected into the valve through the water conveying pipe and the water channel, along with the increase of water pressure, water flows seep or are ejected through air holes in the valve welding position, the indigo water solution has a certain color, a worker can conveniently determine a leakage point of the valve welding position, and after the leakage point is determined, the welding robot is controlled to perform repair welding.
Preferably, the water collecting platform is arranged at the top of the workbench and surrounds the rotary table, and is used for collecting water leakage during valve leakage point detection.
Preferably, the first plug and the second plug are in a circular truncated cone shape, and a rubber ring is arranged around the peripheries of the first plug and the second plug.
Preferably, the first air cylinder, the air pump, the digital display pressure gauge, the inflation and deflation equipment, the second air cylinder and the circulating pump are all connected with the control and display mechanism through wires.
Preferably, the middle part of gasbag is concave shape, just the gasbag is the silica gel material.
Preferably, the water stored in the water tank is an indigo blue aqueous solution.
The technical scheme of the invention has the following beneficial technical effects:
1. after welding, a first air cylinder is started to drive a piston rod to extend, so that two first plugs on the left side and the right side of a rotary table move relatively, two ends of the valve are plugged, an air pump is started after plugging is completed, compressed air is injected into the valve through an air inlet pipe and an air groove to be pressurized, meanwhile, the air injected by the valve enters an air outlet pipe through an air groove of the other first plug, then enters a digital display pressure gauge through an orifice of the air outlet pipe, the digital display pressure gauge displays an air pressure value, and if the digital display pressure gauge displays that the air pressure value is equal to the air pressure value applied by the air pump, the welding air tightness of the valve is good, and welding defects such as air holes do not exist; if the pressure value displayed by the digital display pressure gauge is lower than the pressure value applied by the air pump, the sealing tightness of the welded valve is poor, and air pressure leakage exists.
2. This valve welding and gas tightness detect integrated device, when utilizing first end cap to carry out the shutoff to the valve and detect, through starting filling and discharging the gas equipment, with gaseous through the gas-supply pipe pour into the air flue into, pour into the inner chamber that forms between gasbag and the support piece into by the air flue again, inflate the gasbag to utilize the gasbag after aerifing to carry out secondary seal between first end cap and the valve, ensure the accuracy that the follow-up gas tightness of valve detected.
3. This valve welding and gas tightness detect integrated device, after utilizing gas tightness detection mechanism to detect out the valve and having the leak source, through the revolving stage with the valve rotation 90 degrees, rethread starts the second cylinder and drives the piston rod extension, thereby make two second end caps relative movement of both sides around the revolving stage, to the shutoff of carrying out at the both ends of valve, after the shutoff is accomplished, start the circulating pump, pass through raceway and water course injection valve with the water in the water tank, along with hydraulic increase, rivers ooze or jet out through the gas pocket that the valve welding department exists, because indigo aqueous solution has certain colour, make things convenient for the staff to confirm the leak source of valve welding department, and can carry out automatic marking to leak source department, make things convenient for work such as subsequent repair welding of valve.
4. This valve welding and gas tightness detect integrated device through set up the adjustment tank on the mounting, the cooperation bolt, conveniently adjusts the height that the regulating part was installed on the mounting to conveniently adjust the mounting height of first end cap and second end cap, and then be convenient for adapt to the detection achievement of different diameter valves.
Drawings
FIG. 1 is a front view of an integrated valve welding and air tightness detection device according to the present invention;
FIG. 2 is a sectional view of the table structure of the present invention;
FIG. 3 is a top view of the air tightness detecting mechanism and the leak detection mechanism of the present invention;
FIG. 4 is a schematic view of the valve welding and airtightness detection integrated apparatus according to the present invention;
FIG. 5 is a front cross-sectional view of a first plug of the present invention;
FIG. 6 is a schematic representation of the bladder configuration of the present invention after inflation;
FIG. 7 is a top cross-sectional view of a second plug construction of the present invention;
fig. 8 is a front cross-sectional view of the mount structure of the present invention.
Reference numerals:
100. a work table; 200. a turntable; 300. a welding robot; 400. a docking mechanism; 500. a control and display mechanism; 600. a mounting frame; 601. a fixing member; 602. an adjustment member; 603. a bolt; 604. an adjustment groove; 700. an air tightness detection mechanism; 701. a first cylinder; 702. a first plug; 703. an air pump; 704. a digital display pressure gauge; 705. an air inlet pipe; 706. an air outlet pipe; 707. an air tank; 710. a support member; 711. an air bag; 712. an airway; 713. an air charging and discharging device; 714. a gas delivery pipe; 800. a missing point detection mechanism; 801. a second cylinder; 802. a second plug; 803. a water channel; 804. a water tank; 805. a circulation pump; 806. a water delivery pipe; 807. a water return pipe; 900. a water collection platform; 1000. a rubber ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Referring to fig. 1-8, the present invention provides a technical solution: the utility model provides a valve welds dress and gas tightness detection integrated device, comprises a workbench 100, revolving stage 200, welding robot 300, docking mechanism 400, control and display mechanism 500, mounting bracket 600, gas tightness detection mechanism 700, leak source detection mechanism 800 and drip station 900, revolving stage 200 installs the middle part at workstation 100, welding robot 300 and control and display mechanism 500 install the both sides at revolving stage 200 respectively, docking mechanism 400 sets up the rear at revolving stage 200, welding robot 300, docking mechanism 400, control and display mechanism 500 are current valve welding equipment.
The top of the workbench 100 is fixedly provided with four mounting frames 600 which are arranged on the periphery of the rotary table 200 in an annular array manner, the two mounting frames 600 which are symmetrical left and right relative to the rotary table 200 are provided with air tightness detection mechanisms 700 for performing air detection on welding seams of the welded valve, and the two mounting frames 600 which are symmetrical front and back relative to the rotary table 200 are provided with leakage point detection mechanisms 800 for performing water detection on leakage points of the welded valve.
The air tightness detection mechanism 700 comprises two first air cylinders 701, two first plugs 702, an air pump 703, a digital display pressure gauge 704, an air inlet pipe 705 and an air outlet pipe 706, wherein the two first air cylinders 701 are respectively and fixedly installed on the installation frames 600 on the left side and the right side of the rotary table 200, the two first air cylinders 701 are used for performing telescopic motion on the first plugs 702, one end of piston rods of the two first air cylinders 701 is respectively and fixedly connected with one first plug 702, the two first plugs 702 are used for plugging and sealing two ends of a valve, the air pump 703 and the digital display pressure gauge 704 are both installed inside the workbench 100, during air tightness detection, the air pump 703 is used for pressurizing the valve, the digital display pressure gauge 704 is used for displaying a pressure value, the air delivery end of the air pump 703 and the air connecting port of the digital display pressure gauge 704 are respectively connected with the air inlet pipe 705 and the air outlet pipe 706, the air groove 707 is used for communicating the air inlet pipe 705, the interior of the valve and the air outlet pipe 706, one end of each of the two air grooves 707 is communicated with the valve, and the other end of each of the two air grooves 707 is respectively connected with the air inlet pipe 705 and the air outlet pipe 706, in the invention, after welding is finished, the first air cylinder 701 is started to drive the piston rod to extend, so that the two first plugs 702 on the left side and the right side of the rotary table 200 move relatively to seal the two ends of the valve, after sealing is finished, the air pump 703 is started to inject compressed air into the valve through the air inlet pipe 705 and the air groove 707 to pressurize, meanwhile, the air injected by the valve enters the air outlet pipe 706 through the air groove 707 of the other first plug 702 and then enters the digital display pressure gauge 704 through the pipe orifice of the air outlet pipe 706, the digital display pressure value by the digital display pressure gauge 704, if the digital display, no welding defects such as air holes and the like; if the pressure value displayed by the digital display pressure gauge 704 is lower than the pressure value applied by the air pump 703, the sealing tightness of the welded valve is poor, and air pressure leakage exists.
Specifically, the air-tightness detection mechanism 700 is further connected with an air bag sealing mechanism, the air bag sealing mechanism comprises a support member 710, an air bag 711, an air passage 712, an inflation and deflation device 713 and an air delivery pipe 714, the support member 710 is fixedly installed at one end of the first plug 702, the support member 710 is used for installing the air bag 711, the air bag 711 covers the outer side of the support member 710 and forms an inner cavity with the support member 710, the air bag 711 is used for improving the sealing performance between the first plug 702 and the valve so as to ensure the accuracy of subsequent air-tightness detection of the air bag, one end of the air passage 712 is communicated with the inner cavity, the other end of the air passage 712 penetrates through the support member 710 and the first plug 702 to be connected with the air delivery pipe 714, the air passage 712 is used for communicating the air delivery pipe 714 with the inner cavity so as to facilitate the injection and extraction of air in the inner cavity, thereby facilitating the inflation and, in the invention, when the valve is plugged and detected by using the first plug 702, the gas is injected into the air passage 712 through the gas pipe 714 by starting the inflation and deflation device 713, and then is injected into an inner cavity formed between the air bag 711 and the support member 710 through the air passage 712 to inflate the air bag 711, and the inflated air bag 711 is tightly attached to the inner wall of the valve to perform secondary sealing between the first plug 702 and the valve, thereby ensuring the accuracy of the subsequent air tightness detection of the valve.
Specifically, the leak detection mechanism 800 includes two second cylinders 801, two second plugs 802, a water tank 804, a circulation pump 805, a water pipe 806 and a water return pipe 807, the two second cylinders 801 are respectively and fixedly mounted on the two mounting brackets 600 at the front and the rear of the turntable 200, the second cylinders 801 are used for extending and retracting the second plugs 802, one ends of piston rods of the two second cylinders 801 are respectively and fixedly connected with one second plug 802, when the leak detection is performed, the second plugs 802 are used for plugging two ends of a valve, a water channel 803 is respectively formed in the middle of each of the two second plugs 802, the water channel 803 is used for communicating the inside of the valve with the water pipe 806 and the water return pipe 807, the water tank 804 and the circulation pump 805 are disposed inside the workbench 100, a water inlet end of the circulation pump 805 is connected with the bottom of the water tank 804, a water outlet end of the circulation pump 805 is fixedly connected with the water pipe 806, one end of the, in the invention, after the air tightness detection mechanism 700 is used for detecting that a leakage point exists on the valve, the valve is rotated by 90 degrees through the rotary table 200, and the piston rod is driven to extend by starting the second air cylinder 801, so that the two second plugs 802 on the front side and the rear side of the rotary table 200 move relatively to plug the two ends of the valve, after the plugging is finished, the circulating pump 805 is started, water in the water tank 804 is injected into the valve through the water pipe 806 and the water channel 803, and along with the increase of water pressure, water flows seep or are ejected through air holes existing in the welding position of the valve, so that the purpose of determining the leakage point of the welding position of the valve is achieved, after the leakage point is determined, the welding robot 300 can be directly connected to perform repair welding on the valve, and the repair welding is very convenient.
It should be noted that the water stored in the water tank 804 is an aqueous solution of indigo, and the molecular formula is C16H10N2O2The colorant is a water-soluble non-azo colorant, and is odorless, nontoxic and harmless, so that the colorant hardly causes damage to the environment and personnel and is safe to use; in the valve welding process, air holes in the valve welding position may be small, water drops easily deviate due to gravity falling, and workers are not convenient to determine the positions of the air holes, therefore, in the invention, water filled into the valve is changed into a colored indigo blue aqueous solution (in other embodiments, the water solution can be an aqueous solution of other coloring agents such as capsanthin, carmine and the like), the workers can conveniently and quickly determine the air holes in the welding seam position by using the color of the indigo blue aqueous solution, and even if the indigo blue aqueous solution falls due to gravity, the initial position of the falling track of the indigo blue aqueous solution is still convenient for the workers to determine, so that the positions of the air holes are convenient to determine, meanwhile, the colored indigo blue aqueous solution can mark the positions of the air holes, and the welding robot 300 can be operated to perform repair welding operation without manually marking subsequently, and the use is more convenient.
Specifically, the mounting frame 600 includes a fixing member 601, an adjusting member 602, a bolt 603 and an adjusting groove 604, the fixing member 601 is fixedly mounted on the workbench 100 through a screw, the adjusting groove 604 is disposed in the middle of the fixing member 601, the adjusting groove 604 upwards penetrates through the fixing member 601 along the length direction of the fixing member 601, the adjusting member 602 passes through the adjusting groove 604 through the bolt 603 and is fixedly mounted on the fixing member 601, when valves with different diameters are required to be detected, the bolt 603 is unscrewed, the height value of the adjusting member 602 on the fixing member 601 is adjusted through the adjusting groove 604, and the bolt 603 is locked again, so that the purpose of adjusting the first plug 702 and the second plug 802 can be achieved, and the valve detection work adapting to the valves with different diameters is facilitated.
A use method of an integrated device for valve welding and air tightness detection comprises the following operation steps:
s1, after welding of the valve is completed, starting a first air cylinder to drive a piston rod to extend, enabling two first plugs on the left side and the right side of a rotary table to move relatively, and plugging two ends of the valve;
s2, starting inflation and deflation equipment, injecting gas into the air passage through the gas conveying pipe, injecting the gas into an inner cavity formed between the air bag and the support piece through the air passage, inflating the air bag, and enabling the inflated air bag to be tightly attached to the inner wall of the valve;
s3, starting an air pump, injecting compressed air into the valve through an air inlet pipe and an air groove to be pressurized, simultaneously, injecting the air injected by the valve into an air outlet pipe through the air groove of the other first plug, then, injecting the air into a digital display pressure gauge through a pipe orifice of the air outlet pipe, and displaying an air pressure value by the digital display pressure gauge; if the digital display pressure gauge shows that the air pressure value is lower than the air pressure value applied by the air pump, the sealing airtightness of the welded valve is poor, and air pressure leakage exists;
s4, if air pressure leaks, rotating the valve by using the rotary table, and starting the second air cylinder to drive the piston rod to extend, so that the two second plugs on the front side and the rear side of the rotary table move relatively to plug the two ends of the valve;
s5, after plugging is completed, a circulating pump is started, the indigo water solution stored in the water tank is injected into the valve through the water conveying pipe and the water channel, along with the increase of water pressure, water flows seep or are ejected through air holes in the valve welding position, the indigo water solution has a certain color, a worker can conveniently determine a leakage point of the valve welding position, and after the leakage point is determined, the welding robot is controlled to perform repair welding.
Specifically, the platform 900 that catchments sets up at the top of workstation 100 and surrounds revolving stage 200 for collect leaking of valve leak point detection time measuring, leak the time measuring at the valve leak point, the condition that the leak point seeped water can appear, in order to prevent ponding on the workstation 100, the platform 900 that catchments through setting up being greater than and surrounding revolving stage 200 collects ponding.
Specifically, the first plug 702 and the second plug 802 are in a truncated cone shape, the rubber ring 1000 is arranged around the first plug 702 and the second plug 802, and the rubber ring 1000 is utilized to buffer the first plug 702 and the second plug 802 when being plugged with a valve, so that the hard contact damage of the first plug 702 and the second plug 802 is avoided, and the sealing performance between the first plug 702 and the valve and between the second plug 802 and the valve is improved.
Specifically, the first air cylinder 701, the air pump 703, the digital display pressure gauge 704, the inflation and deflation equipment 713, the second air cylinder 801 and the circulating pump 805 are all connected to the control and display mechanism 500 through wires, and the digital display pressure gauge 704 is arranged inside the workbench 100 and is connected with the control and display mechanism 500 for the convenience of the degree, and the first air cylinder 701, the air pump 703, the inflation and deflation equipment 713, the second air cylinder 801 and the circulating pump 805 are conveniently controlled and used through the control and display mechanism 500.
Specifically, the middle of the air bag 711 is concave, and the air bag 711 is made of silica gel.
The working principle and the using process of the invention are as follows: the butt joint mechanism 400 is used for butt joint of the valve body and the valve seat, the rotary table 200 and the welding robot 300 are started, the valve body and the valve seat are welded, after the welding is completed, the first air cylinder 701 is started to drive the piston rod to extend, the two first plugs 702 on the left side and the right side of the rotary table 200 move relatively, two ends of the valve are plugged, after the first plugs 702 are tightly connected with the end portions of the valve, the inflation and deflation equipment 713 is started, air is injected into the air passage 712 through the air conveying pipe 714, then the air is injected into an inner cavity formed between the air bag 711 and the supporting piece 710 through the air passage 712, the air bag 711 is inflated, the inflated air bag 711 is tightly connected with the inner wall of the valve, and secondary sealing is performed between the first plugs 702 and the valve;
then, after the sealing is completed, the air pump 703 is started, compressed air is injected into the valve through the air inlet pipe 705 and the air groove 707 to be pressurized, meanwhile, the air injected by the valve enters the air outlet pipe 706 through the air groove 707 of the other first plug 702, and then enters the digital display pressure gauge 704 through the pipe orifice of the air outlet pipe 706, the digital display pressure gauge 704 displays an air pressure value, if the digital display pressure gauge 704 displays that the air pressure value is equal to the air pressure value applied by the air pump 703, the air tightness of the valve welding is good, and welding defects such as air holes and the like do not exist; if the digital display pressure gauge 704 shows that the air pressure value is lower than the air pressure value applied by the air pump 703, the sealing tightness of the welded valve is poor, and air pressure leakage exists;
finally, if no air pressure leakage exists, the next valve welding work is carried out, if air pressure leakage exists, the valve is rotated by 90 degrees by using the rotary table 200, then the second air cylinder 801 is started to drive the piston rod to extend, so that the two second plugs 802 on the front side and the rear side of the rotary table 200 move relatively, the two ends of the valve are plugged, after plugging is completed, the circulating pump 805 is started, water in the water tank 804 is injected into the valve through the water pipe 806 and the water channel 803, along with the increase of water pressure, water flows seep or are ejected through air holes in the valve welding position, the indigo blue water solution has a certain color, a worker can conveniently determine the leakage point of the valve welding position, and after the leakage point is determined, the welding robot 300 is controlled to carry out repair welding.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The valve welding and air tightness detection integrated device is characterized by comprising a workbench (100), a rotary table (200), a welding robot (300), a butt joint mechanism (400), a control and display mechanism (500), an installation frame (600), an air tightness detection mechanism (700), a leak source detection mechanism (800) and a water collection table (900), wherein the rotary table (200) is installed in the middle of the workbench (100), the welding robot (300) and the control and display mechanism (500) are respectively installed on two sides of the rotary table (200), and the butt joint mechanism (400) is arranged behind the rotary table (200);
the top of the workbench (100) is fixedly provided with four mounting frames (600) which are annularly arrayed on the periphery of the rotary table (200), two mounting frames (600) which are bilaterally symmetrical relative to the rotary table (200) are provided with air tightness detection mechanisms (700) for performing air detection on welding seams of welded valves, and two mounting frames (600) which are bilaterally symmetrical relative to the rotary table (200) are provided with leakage point detection mechanisms (800) for performing water detection on leakage points of the welded valves;
the air tightness detection mechanism (700) comprises two first air cylinders (701), two first plugs (702), an air pump (703), a digital display pressure gauge (704), an air inlet pipe (705) and an air outlet pipe (706), the two first air cylinders (701) are respectively and fixedly arranged on the mounting frames (600) on the left side and the right side of the rotary table (200), one end of each piston rod of the two first cylinders (701) is fixedly connected with one first plug (702), the air pump (703) and the digital display pressure gauge (704) are both arranged inside the workbench (100), the air inlet pipe (705) and the air outlet pipe (706) are respectively connected with the air delivery end of the air pump (703) and the air connecting port of the digital display pressure gauge (704), the middle parts of the two first plugs (702) are respectively provided with an air groove (707), one end of each air groove (707) is communicated with a valve, and the other ends of the two air grooves (707) are respectively connected with an air inlet pipe (705) and an air outlet pipe (706).
2. The integrated valve welding and airtightness detection device according to claim 1, the air tightness detection mechanism (700) is also connected with an air bag sealing mechanism, the air bag sealing mechanism comprises a supporting piece (710), an air bag (711), an air passage (712), an air inflation and deflation device (713) and an air conveying pipe (714), the supporting piece (710) is fixedly arranged at one end of the first plug (702), the air bag (711) covers the outer side of the supporting piece (710) and forms an inner cavity with the supporting piece (710), one end of the air passage (712) is communicated with the inner cavity, the other end of the air passage (712) penetrates through the support piece (710) and the first plug (702) to be connected with the air conveying pipe (714), the other end of the air conveying pipe (714) is connected with the air inflation and deflation equipment (713), and the air inflation and deflation equipment (713) is arranged inside the workbench (100).
3. The integrated valve welding and air tightness detection device according to claim 1, wherein the leak detection mechanism (800) comprises two second air cylinders (801), two second plugs (802), a water tank (804), a circulating pump (805), a water pipe (806) and a water return pipe (807), the two second air cylinders (801) are respectively and fixedly installed on the two installation frames (600) at the front and the rear of the rotary table (200), one end of the piston rod of each of the two second air cylinders (801) is respectively and fixedly connected with one second plug (802), the middle parts of the two second plugs (802) are respectively provided with a water channel (803), the water tank (804) and the circulating pump (805) are arranged inside the workbench (100), the water inlet end of the circulating pump (805) is connected with the bottom of the water tank (804), and the water outlet end of the circulating pump (805) is fixedly connected with the water pipe (806), one end of the water return pipe (807) is connected to the top of the water tank (804), one ends of the two water channels (803) are communicated with a valve, and the other ends of the two water channels (803) are respectively connected with a water conveying pipe (806) and the water return pipe (807).
4. The integrated valve welding and air tightness detection device according to claim 1, wherein the mounting frame (600) comprises a fixing member (601), an adjusting member (602), a bolt (603) and an adjusting groove (604), the fixing member (601) is fixedly mounted on the workbench (100) through a screw, the adjusting groove (604) is formed in the middle of the fixing member (601), the adjusting groove (604) penetrates through the fixing member (601) upwards along the length direction of the fixing member (601), and the adjusting member (602) penetrates through the adjusting groove (604) through the bolt (603) and is fixedly mounted on the fixing member (601).
5. The use method of the integrated device for welding and detecting the airtightness of the valve according to claim 1, characterized by comprising the following operation steps:
s1, after welding of the valve is completed, starting a first air cylinder 701 to drive a piston rod to extend, so that two first plugs 702 on the left side and the right side of the rotary table 200 move relatively to plug two ends of the valve;
s2, starting the inflation and deflation equipment 713, injecting gas into the air passage 712 through the gas pipe 714, injecting the gas into an inner cavity formed between the air bag 711 and the support piece 710 through the air passage 712, inflating the air bag 711, and enabling the inflated air bag 711 to be tightly attached to the inner wall of the valve;
s3, starting the air pump 703, injecting compressed air into the valve through the air inlet pipe 705 and the air groove 707 to pressurize, meanwhile, the air injected by the valve enters the air outlet pipe 706 through the air groove 707 of the other first plug 702, and then enters the digital display pressure gauge 704 through the pipe orifice of the air outlet pipe 706, the digital display pressure gauge 704 displays an air pressure value, if the digital display pressure gauge 704 displays that the air pressure value is equal to the air pressure value applied by the air pump 703, the air tightness of the valve welding is good, and welding defects such as air holes and the like do not exist; if the digital display pressure gauge 704 shows that the air pressure value is lower than the air pressure value applied by the air pump 703, the sealing tightness of the welded valve is poor, and air pressure leakage exists;
s4, if air pressure leaks, the valve is rotated by 90 degrees by using the rotary table 200, and the piston rod is driven to extend by starting the second air cylinder 801, so that the two second plugs 802 on the front side and the rear side of the rotary table 200 move relatively to plug the two ends of the valve;
s5, after plugging is completed, a circulating pump 805 is started, the indigo water solution stored in the water tank 804 is injected into the valve through the water conveying pipe 806 and the water channel 803, water flows seep or are ejected through air holes in the valve welding position along with the increase of water pressure, a worker can conveniently determine a leakage point of the valve welding position due to the fact that the indigo water solution has a certain color, and after the leakage point is determined, the welding robot 300 is controlled to perform repair welding.
6. The integrated valve welding and airtightness detection device according to claim 1, wherein the water collection table (900) is disposed on the top of the worktable (100) to surround the turntable (200) and is used for collecting water leakage during valve leakage detection.
7. The integrated valve welding and air tightness detection device according to claim 5, wherein the first plug (702) and the second plug (802) are in a circular truncated cone shape, and a rubber ring (1000) is arranged around the first plug (702) and the second plug (802).
8. The integrated valve welding and air tightness detection device according to claim 5, wherein the first air cylinder (701), the air pump (703), the digital display pressure gauge (704), the air inflation and deflation equipment (713), the second air cylinder (801) and the circulating pump (805) are all connected to the control and display mechanism (500) through wires.
9. The integrated valve welding and air tightness detection device according to claim 5, wherein the middle portion of the air bag (711) is concave, and the air bag (711) is made of silica gel.
10. The integrated valve welding and air tightness detection device according to claim 5, wherein the water stored in the water tank (804) is an indigo blue aqueous solution.
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| CN117086529A (en) * | 2023-10-19 | 2023-11-21 | 江苏江美机电有限公司 | Water pump shell welding device and welding process thereof |
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| CN113001048B (en) | 2022-09-16 |
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