CN107363465B - Gas-liquid separator welding tool and using method thereof - Google Patents
Gas-liquid separator welding tool and using method thereof Download PDFInfo
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- CN107363465B CN107363465B CN201710774187.4A CN201710774187A CN107363465B CN 107363465 B CN107363465 B CN 107363465B CN 201710774187 A CN201710774187 A CN 201710774187A CN 107363465 B CN107363465 B CN 107363465B
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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
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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Abstract
The invention discloses a gas-liquid separator welding tool and a using method thereof, and belongs to the field of tool fixtures. The tool comprises a bottom plate, a guide positioning plate, a limiting baffle and a supporting plate; two upright posts are arranged on the bottom plate; the guide positioning disc is sleeved on the two upright posts, and is provided with a first waist-shaped hole and a positioning hole which penetrate through the upper surface and the lower surface; the limiting baffle and the supporting plate are both positioned below the guiding positioning plate, the limiting baffle is provided with a second waist-shaped hole corresponding to the first waist-shaped hole, and the upper surface of the supporting plate is provided with a positioning groove corresponding to the positioning hole; and a protective air pipe seat is arranged above the guiding and positioning disc, and two protective air pipes are fixed and respectively correspond to the first waist-shaped hole and the positioning hole. The tool can efficiently and accurately complete the welding of the gas-liquid separator, can avoid the oxidation caused by high welding temperature, and saves the pickling after welding. The use method of the invention can position the air inlet pipe, the air outlet pipe and the upper end cover efficiently and precisely to complete the welding of the gas-liquid separator.
Description
Technical Field
The invention belongs to the field of tool fixtures, relates to a tool fixture used in a gas-liquid separator welding process, and particularly relates to a gas-liquid separator welding tool and a using method thereof.
Background
The gas-liquid separator is a device for separating out condensed small liquid drops in saturated gas, and achieves the purpose of recycling condensed liquid or purifying gas phase. The gas-liquid separator installed between the air suction end of the compressor and the evaporator of the air-conditioning refrigeration system can be used for temporarily storing the return liquid of the system, controlling the liquid refrigerant and the lubricating oil to return to the compressor at a safe speed, avoiding hydraulic impact and playing a role in filtering and returning oil.
As shown in fig. 1, the gas-liquid separator generally includes a cylinder 100, an upper end cover 200, a lower end cover 300, an outlet pipe 400, an inlet pipe 500, etc., the upper end cover 200 and the lower end cover 300 are respectively welded at both ends of the cylinder 100, the outlet pipe 400 is composed of an outlet straight pipe section 410 and a U-shaped pipe section 420, the inlet pipe 500 is composed of an inlet straight pipe section 510 and a bent pipe section 520, the U-shaped pipe section 420 and the bent pipe section 520 are located inside the cylinder 100, and one end of each is fixed on the upper end cover 200 and ensures good air tightness, and the outlet straight pipe section 410 and the inlet straight pipe section 510 are located outside the cylinder 100 and are respectively inserted into the U-shaped pipe section 420 and the bent pipe section 520. In the actual welding installation process, the assembly positions of the air outlet pipe 400, the air inlet pipe 500 and the upper end cover 200 are difficult to fix, welding is unstable, the welding technical requirement on a welder is high, the welding speed is low, the phenomena of deflection, infirm, poor air tightness or poor gas protection during welding often occur after welding, the welding precision is influenced, the interior of a product is oxidized, the product requirement can be met only through cleaning treatment of a post-procedure, and the required installation finished product in design cannot be achieved. In addition, in order to prevent the inside of the outlet pipe 400 and the inlet pipe 500 from being oxidized due to high welding temperature, welding needs to be performed in a protective gas environment, and it is difficult to perform gas protection to the welding portion again under the condition that it is difficult to maintain the fixing stability, and the consumption of gas is large and the cost is high.
In view of the above problems, the inventor has previously proposed a solution and applied for a patent with the application numbers: 201510044822.4, published as: 5, month and 13 days 2015, the invention name is: a welding fixture for a gas-liquid separator comprises a first guide pillar, a semicircular supporting block, a guide pillar, an air inlet pipe supporting block, a rotary semicircular supporting block, a second guide pillar, a third guide pillar, a base and a limiting backup plate; the limiting backup plate is fixed on the base; one end of the first guide pillar and one end of the third guide pillar are vertically fixed on the base, and the other end of the first guide pillar and the other end of the third guide pillar are connected with the semicircular supporting block; one end of the second guide post is vertically fixed on the base, and the other end of the second guide post is connected with the rotary semicircular supporting block; the semicircular supporting block and the rotary semicircular supporting block are respectively provided with two semicircular grooves; the semicircular groove of the semicircular supporting block and the semicircular groove of the rotary semicircular supporting block are combined in pairs to form two air outlet pipe fixing holes.
When the air inlet pipe and the air outlet pipe of the gas-liquid separator are welded by adopting the scheme, the semicircular supporting block needs to be rotated relative to the semicircular supporting block, the air outlet pipe is clamped and fixed through the air outlet pipe fixing hole formed between the semicircular supporting block and the semicircular supporting block, and the air inlet pipe is supported by adopting the air inlet pipe supporting block, so that the structure has the advantages of more movable parts, inconvenience in fixing the air inlet pipe and the air outlet pipe, lower positioning precision and firmness in fixing; more importantly, intake pipe 500 can be shorter sometimes in the reality, and its bend section 520 can just in time block the outlet duct fixed orifices between rotatory semicircle tray and the semicircle tray, because the existence of radian, must lead to rotatory semicircle tray and semicircle tray can't be in the same place, just can not fix intake pipe 500 yet. In addition, when the welding fixture is used for welding, the protection gas is difficult to be introduced into the pipe, the specification only indicates that the gas protection is needed, but how to perform the gas protection is not given, and furnace brazing is adopted according to a general mode in the field, so that time and labor are wasted. In summary, it is desirable to provide a tool for fixing an air inlet pipe and an air outlet pipe more conveniently and accurately during welding of a gas-liquid separator, and gas protection can be performed very conveniently, which is a problem to be solved urgently.
Disclosure of Invention
1. Problems to be solved
The invention provides a gas-liquid separator welding tool, which aims to solve the problems that an air inlet pipe and an air outlet pipe are inconvenient to fix, the positioning accuracy is low, the fixation is not firm enough, and a bent pipe section of the air inlet pipe can be clamped between a rotary semicircular supporting block and a semicircular supporting block, so that the rotary semicircular supporting block and the semicircular supporting block cannot be combined together, and the air inlet pipe and the air outlet pipe cannot be fixed due to the movable clamping structure of a welding fixture of the existing gas-liquid separator.
The gas-liquid separator welding tool is additionally provided with a structure which is convenient for gas protection of the gas inlet pipe and the gas outlet pipe during welding, and the internal oxidation caused by high temperature is avoided.
In addition, the invention also provides a using method of the gas-liquid separator welding tool, which can efficiently and accurately position the air inlet pipe, the air outlet pipe and the upper end cover to complete welding of the gas-liquid separator.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A gas-liquid separator welding tool comprises a bottom plate, a guide positioning disc, a limiting baffle and a supporting plate; the bottom plate is provided with two upright posts which are a first upright post and a second upright post respectively; the guide positioning plate is sleeved on the two stand columns, and a first waist-shaped hole and a positioning hole which penetrate through the upper surface and the lower surface are formed in the guide positioning plate; the limiting baffle and the supporting plate are both located below the guiding and positioning disc, the limiting baffle is provided with a second waist-shaped hole, the second waist-shaped hole corresponds to the first waist-shaped hole, the upper surface of the supporting plate is provided with a positioning groove, and the positioning groove corresponds to the positioning hole.
As a further improvement, a boss for clamping the upper end cover is arranged in the middle of the upper end face of the guide positioning plate, and the first kidney-shaped hole and the positioning hole are located on the boss.
As a further improvement, the limit baffle is arranged on the bottom plate, one end of the limit baffle is sleeved on the first upright post and can rotate around the first upright post, and the other end of the limit baffle can be fixedly connected with the bottom plate; the size of the second waist-shaped hole is the same as that of the first waist-shaped hole.
As a further improvement, the support supporting plate is arranged on a second upright post of a guide Kong Taozai arranged at one end of the support supporting plate and can be locked and fixed through a screw; and an adjusting block for limiting and supporting the supporting plate is arranged on the second upright post below the supporting plate.
As a further improvement, the positioning hole is a rectangular hole, and a semicircular hole is formed in one end of the positioning hole.
As a further improvement, the other end of the supporting plate is provided with a sliding groove penetrating through the upper surface and the lower surface of the supporting plate, a sliding block is arranged in the positioning groove, and a locking screw penetrates through the sliding groove and then is connected with the sliding block.
As a further improvement, a protective air pipe seat is arranged on the upright column above the guiding and positioning disc, and two protective air pipes are arranged on the protective air pipe seat and correspond to the first waist-shaped hole and the positioning hole respectively.
As a further improvement, one end of the protective air tube seat is sleeved on the first upright post through a round hole, the other end of the protective air tube seat is provided with an arc clamping groove for clamping the surface of the second upright post, and a magnet is arranged in the arc clamping groove; the protective air pipe seat is provided with two adjusting holes, the two protective air pipes respectively penetrate through the two adjusting holes, and the peripheral surfaces of the adjusting holes are communicated with pin blocking holes; and the protection air pipe is provided with a lower stop pin and an upper stop pin which can pass through the stop pin hole at intervals along the axial direction.
The use method of the gas-liquid separator welding tool comprises the following operation steps:
(1) the protective air pipe seat is opened in a rotating mode, so that the protective air pipe seat is kept away from the blocking of the guide positioning disc;
(2) rotating and adjusting the limiting baffle plate to align the second waist-shaped hole with the first waist-shaped hole on the guiding and positioning disc and fixing the position of the limiting baffle plate; inserting the U-shaped pipe section of the air outlet pipe into the first kidney-shaped hole from the upper part of the guide positioning disc until the bottom of the U-shaped pipe section is inserted into the second kidney-shaped hole of the limiting baffle plate and is limited and blocked; meanwhile, the two ends of the upper side of the U-shaped pipe section are blocked and limited by the first kidney-shaped hole, so that the U-shaped pipe section is kept in a vertical state;
(3) rotating and adjusting the supporting plate to align the positioning groove with the positioning hole on the guiding and positioning disc; inserting the bent pipe section of the air inlet pipe into the positioning hole from the upper part of the guide positioning disc until the lower end of the bent pipe section abuts against the positioning groove of the support supporting plate; the movable sliding block is propped against the end face of the lower end opening of the bent pipe section, and when the upper end opening of the bent pipe section is adjusted to be in a horizontal state, the sliding block is locked and fixed through a locking screw;
(4) the upper end cover is buckled on a boss of the guide positioning disc, the upper position and the lower position of the guide positioning disc along the upright post are adjusted, one end of the U-shaped pipe section penetrates through a reserved hole in the upper end cover, and the position of the guide positioning disc is fixed when the welding position of the upper end cover relative to the U-shaped pipe section is adjusted;
(5) loosening the adjusting block, adjusting the position of the supporting support plate up and down to enable the upper end of the bent pipe section to penetrate through a hole reserved in the upper end cover, adjusting the position of the upper end of the bent pipe section, extending out of the upper end cover, to meet design requirements, locking the adjusting block, and meanwhile, locking and fixing the supporting support plate;
(6) inserting the lower end of the air outlet straight pipe section of the air outlet pipe into an upper end opening of the U-shaped pipe section, and inserting the lower end of the air inlet straight pipe section of the air inlet pipe into an upper end opening of the bent pipe section;
(7) the protection air pipe seat is closed in a rotating mode, and the arc clamping groove of the protection air pipe seat is clamped on the surface of the second upright post; lifting and rotating the protection air pipes to enable the lower baffle pins to be aligned to the baffle pin holes in the protection air pipe seat, putting down the protection air pipes, enabling the lower baffle pins to penetrate through the baffle pin holes until the lower ends of the two protection air pipes are respectively inserted into the upper end openings of the air outlet straight pipe section and the air inlet straight pipe section, and enabling the upper baffle pins on the protection air pipes to be clamped on the upper surfaces of the protection air pipe seat to enable the protection air pipes to be positioned;
(8) connecting a protective gas pipe with a protective gas source, introducing protective gas into the gas outlet pipe and the gas inlet pipe, and welding the welding part;
(9) after welding is finished and cooling is carried out, the introduction of the protective gas is stopped; lifting and rotating the protection air pipe to enable the lower blocking pin to be aligned to the blocking pin hole in the protection air pipe seat, enabling the lower blocking pin to penetrate through the blocking pin hole, then placing the protection air pipe, and enabling the lower blocking pin to be clamped on the protection air pipe seat; and (5) rotating to open the protective gas pipe seat, and taking down the welded workpiece.
As a further improvement, the step (8) adopts flame brazing for welding, and welding gas adopts natural gas and oxygen, wherein the pressure of the natural gas is 0.08-0.12MPa, and the pressure of the oxygen is 0.3-0.6MPa; the protective gas is protected by inert gas, and the pressure is 0.03-0.06MPa.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) The gas-liquid separator welding tool disclosed by the invention has the advantages that the gas outlet pipe, the gas inlet pipe and the upper end cover of the gas-liquid separator are positioned and fixed through the guide positioning disc in a matching way with the limiting baffle and the supporting plate, the guide positioning disc is used for stably guiding, the limiting baffle and the supporting plate are used for accurately finely adjusting the direction, the gas outlet pipe and the gas inlet pipe are independently fixed, a multipoint adjustable fixing mode is adopted, the gas outlet pipe and the gas inlet pipe are independent and organically combined with each other, the positioning can be conveniently, efficiently and accurately carried out, and the guide positioning disc adopts an integral structure mode, so that the problems that in the prior art, the rotating semicircular supporting block and the semicircular supporting block cannot be combined together due to the fact that the bent pipe section of the gas inlet pipe is clamped between the rotating semicircular supporting block and the semicircular supporting block, and the gas inlet pipe and the gas outlet pipe cannot be fixed are effectively solved;
(2) According to the gas-liquid separator welding tool, the boss on the guide positioning disc can be used for clamping the upper end cover so as to position the upper end cover;
(3) According to the gas-liquid separator welding tool, the limiting baffle and the supporting plate are both adjusted in a rotating and movable mode, and the supporting plate can be adjusted up and down, so that the requirements of gas-liquid separators of different types and specifications on fixing the gas inlet pipe and the gas outlet pipe can be met; the position and pose of the air inlet pipe can be corrected by the adjusting block in the sliding chute of the supporting plate;
(4) According to the gas-liquid separator welding tool, the two protection gas pipes can introduce protection gas into the gas inlet pipe and the gas outlet pipe in the welding process to prevent internal oxidation, the protection gas pipes are fixed on the movable protection gas pipe seat, the positioning and fixing of the gas inlet pipe and the gas outlet pipe are not influenced, the effect of conveniently and rapidly performing gas protection is met, the protection gas is directly introduced into the gas inlet pipe and the gas outlet pipe, the protection is comprehensive, and the gas consumption is small; more importantly, the protective gas pipe can be inserted into the gas inlet pipe and the gas outlet pipe, the gas outlet straight pipe section and the gas inlet straight pipe section can be limited and fixed, and the matching positions of the gas inlet pipe, the gas outlet pipe and the upper end cover can be better fixed;
(5) According to the method, the gas-liquid separator welding tool is used for fixing and welding the gas inlet pipe, the gas outlet pipe and the upper end cover, so that the gas-liquid separator can be welded efficiently and accurately, the welding technology for welders is relatively low, the welding efficiency is improved, acid pickling treatment is not needed after welding, the production cost is reduced, and the product quality is improved;
(6) According to the method, the welding gas adopts natural gas and oxygen, the pressure of the natural gas is 0.08-0.12MPa, the pressure of the oxygen is 0.3-0.6MPa, and the pressure of the shielding gas is 0.03-0.06MPa, so that the welding quality and the welding stability are comprehensively considered, and the welding gas is obtained through long-term exploration, and on the premise of ensuring the welding quality, the problem that the micro-vibration caused by the blowing force of the gas on each part influences the formation and solidification of a welding molten pool to generate micro-cracks inside the welding seam can be avoided.
Drawings
FIG. 1 is a schematic view of a gas-liquid separator;
FIG. 2 is a schematic perspective view of a gas-liquid separator welding tool according to the present invention;
FIG. 3 is a schematic structural view of a gas-liquid separator welding tool according to the present invention;
FIG. 4 is a schematic top view of the welding tool for the gas-liquid separator according to the present invention;
FIG. 5 is a schematic perspective view of a support pallet in the gas-liquid separator welding tool of the present invention;
FIG. 6 is a schematic perspective view of a protective gas tube seat in the gas-liquid separator welding tool of the present invention;
FIG. 7 is a schematic structural view of the gas-liquid separator welding tool without the end cover, and the gas inlet pipe and the gas outlet pipe are positioned and installed when welding;
fig. 8 is a schematic structural diagram of the positioning and installation of the air inlet pipe, the air outlet pipe and the upper end cover when the gas-liquid separator welding tool is used for welding.
The reference numerals in the drawings denote:
100. a barrel; 200. an upper end cover; 300. a lower end cover; 400. an air outlet pipe; 410. a straight gas outlet pipe section; 420. a U-shaped pipe section; 500. an air inlet pipe; 510. an air intake straight pipe section; 520. bending the pipe section;
1. a base plate; 2. a first upright post; 3. a second upright post; 4. a guiding positioning disc; 401. a boss; 402. a first kidney-shaped hole; 403. positioning holes; 404. a semicircular hole; 5. a limit baffle; 501. a second kidney-shaped hole; 6. a support pallet; 601. positioning a groove; 602. an adjusting block; 603. a guide hole; 604. a chute; 605. a slider; 606. locking the screw; 7. a protective gas pipe seat; 701. an adjustment hole; 702. a pin blocking hole; 703. a circular hole; 704. an arc clamping groove; 8. protecting the air pipe; 801. a lower stop pin; 802. an upper stop pin; 9. and a locking block.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying drawings.
Example 1
As shown in fig. 2, 3 and 4, the present embodiment provides a gas-liquid separator welding tool, which mainly includes a bottom plate 1, a guiding and positioning disk 4, a limiting baffle 5 and a supporting pallet 6.
The bottom plate 1 is provided with two vertical cylindrical stand columns, namely a first stand column 2 and a second stand column 3, and the lower ends of the stand columns are in threaded connection with the bottom plate 1. The guide positioning plate 4 is provided with two guide holes which are respectively matched with the two stand columns, the guide positioning plate 4 is sleeved on the two stand columns through the guide holes, communicated threaded holes are formed in the outer sides of the guide holes, and screws penetrate through the threaded holes and can extend into the guide holes, so that the surfaces of the stand columns can be pressed through the screws, and the guide positioning plate 4 is fixed on the stand columns; in addition, the middle of the guiding and positioning disk 4 is provided with a boss 401 protruding upwards, the diameter of the boss 401 is adapted to the opening of the upper end cover 200, so that the upper end cover 200 can be clamped on the boss 401 for positioning, the middle of the boss 401 is provided with a first waist-shaped hole 402 and a positioning hole 403 penetrating through the upper surface and the lower surface of the guiding and positioning disk 4, the first waist-shaped hole 402 and the positioning hole 403 are parallel in the length direction and are communicated with each other, and the purpose of ensuring one-time processing forming during processing and ensuring the accuracy of the relative position is achieved; moreover, the width of the first kidney-shaped hole 402 is adapted to the diameter of the U-shaped pipe section 420 of the air outlet pipe 400, and is slightly larger than the diameter of the U-shaped pipe section 420, so as to be more accurately positioned; the positioning hole 403 is a rectangular hole, one end of which is provided with a tangential semicircular hole 404, and the width of the positioning hole 403 is matched with the diameter of the bent pipe section 520 of the air inlet pipe 500 and is slightly larger than the diameter of the bent pipe section 520.
The limit baffle 5 is positioned below the guide positioning plate 4 and is arranged on the bottom plate 1, one end of the limit baffle is sleeved on the first upright post 2 and can rotate around the first upright post 2, the other end of the limit baffle is provided with a second waist-shaped hole 501 corresponding to the first waist-shaped hole 402, the first waist-shaped hole 402 and the second waist-shaped hole 501 are equal in size, the first waist-shaped hole 402 and the second waist-shaped hole 501 can be aligned up and down by rotating the limit baffle 5, and the limit baffle 5 can be locked on the bottom plate 1 through a screw after alignment. In this embodiment, one side of the limiting baffle 5 is provided with an opening communicated with the second waist-shaped hole 501, and the corresponding bottom plate 1 is provided with a rectangular hole, so that the limiting baffle 5 is just adjusted in place when the opening is aligned with one side of the rectangular hole, and the situation that the position of the limiting baffle 5 needs to be adjusted again every time is avoided.
Referring to fig. 2 and 5, the supporting plate 6 is located below the guiding and positioning plate 4, and has a positioning groove 601 formed on an upper surface thereof, the positioning groove 601 corresponds to the positioning hole 403, and a width of the positioning groove 601 matches with a width of the bent pipe section 520 of the air inlet pipe 500; and support pallet 6 overlaps on second stand 3 through the guiding hole 603 that sets up at its one end to accessible screw locking is fixed, is provided with on the second stand 3 of support pallet 6 below and is used for the spacing regulating block 602 that supports support pallet 6, and regulating block 602 also can be through screw locking on second stand 3, thereby carries on spacingly to support pallet 6 height. It is worth to be noted that, a sliding groove 604 penetrating through the upper and lower surfaces of the supporting plate 6 is formed at one end far away from the guiding hole 603, a sliding block 605 is arranged in the positioning groove 601, and a locking screw 606 penetrates through the lower part of the sliding groove 604 and then is in threaded connection with the sliding block 605, so that the sliding block 605 can slide in the sliding groove 604 and can be positioned through the locking screw 606, when the bent pipe section 520 of the air inlet pipe 500 is positioned, fine adjustment can be performed on the positioning, and the precision of the position direction of the bent pipe section 520 is ensured.
In addition, need be under the protection gas environment in welding process to prevent that inside emergence oxidation under outlet duct 400 and the intake pipe 500 high temperature, the cinder drops and probably blocks up the oil gallery, gets into the compressor in serious time, can block the dead compressor, influences product property ability, so need carry out the pickling after welding and handle, the pickling is handled and is not only wasted time and energy, but also has following problem: the acid washing has great environmental pollution, the requirement of the country on environmental protection is more and more strict at present, the acid washing process is slowly eliminated, and the acid washing is not suitable for the product processing requirement; in the process of pickling, the acid gas has high corrosivity on the workpiece, and the surface of the product is easy to generate corrosion, rust and other defects to influence the performance of the product; the product after acid washing has short rust prevention period and has rust hidden trouble. Therefore, how to effectively perform welding protection is of great importance, and with reference to fig. 2 and 6, in this embodiment, a protection air pipe seat 7 is installed on the upright column above the guiding and positioning disk 4, and two protection air pipes 8 are arranged thereon, and respectively correspond to the first kidney-shaped hole 402 and the positioning hole 403; furthermore, one end of the protection gas tube seat 7 is sleeved on the first upright post 2 through a circular hole 703, the other end of the protection gas tube seat is provided with an arc clamping groove 704 used for being clamped on the surface of the second upright post 3, a magnet is arranged in the arc clamping groove 704, two adjusting holes 701 are formed in the protection gas tube seat 7, the two protection gas tubes 8 respectively penetrate through the two adjusting holes 701, the peripheral surfaces of the adjusting holes 701 are communicated with a blocking pin hole 702, the protection gas tubes 8 are provided with a lower blocking pin 801 and an upper blocking pin 802 which can penetrate through the blocking pin hole 702 at intervals along the axial direction, the connecting parts of the protection gas tube seat 7 and the upright posts are positioned by steps, two upright posts on the upper side of the protection gas tube seat 7 are respectively sleeved with a locking block 9, and can be locked on the upright posts through screws, so that the protection gas tube seat 7 is limited. In the structure, the two protection gas pipes 8 can introduce protection gas into the gas inlet pipe 500 and the gas outlet pipe 400 in the welding process to prevent internal oxidation, the protection gas pipes 8 are fixed on the movable protection gas pipe seat 7, the positioning and fixing of the gas inlet pipe 500 and the gas outlet pipe 400 are not influenced, the effect of conveniently and quickly performing gas protection is also met, the protection gas is directly introduced into the gas inlet pipe 500 and the gas outlet pipe 400, the protection is comprehensive, and the gas consumption is small; more importantly, the protection air pipe 8 can be inserted into the air inlet pipe 500 and the air outlet pipe 400 to limit and fix the air outlet straight pipe section 410 and the air inlet straight pipe section 520, so that the matching positions of the air inlet pipe 500, the air outlet pipe 400 and the upper end cover 200 can be better fixed. In addition, the lower end of the protection air pipe 8 is conical, and after the protection air pipe is inserted into the air inlet pipe 500 and the air outlet pipe 400, the protection air pipe can be matched with the flaring openings of the air inlet pipe 500 and the air outlet pipe 400, so that the positioning is more accurate, and air leakage can be effectively prevented.
Through the design and manufacture of the tool, an oxidation-free welding process is adopted during welding, namely, in the welding process, the inside of the tube is protected by inert gases such as nitrogen, argon and the like, so that the product is prevented from being oxidized in the welding process. After the product is welded and cooled, acid pickling treatment is not needed, the product can directly enter the next working procedure, the working procedure is shortened, the production efficiency is greatly improved, and the energy consumption and the cost are reduced; meanwhile, the whole process is not contacted with corrosive media, so that the rust prevention period of the product is prolonged, and the requirements of national environmental protection policies are met. Through the welding of the tool in the gas-liquid separator, compared with the clamp in the comparison document, the production efficiency is improved from 300/8 hours to 400/8 hours in a shift, 2 pickling personnel can be reduced, and the rust prevention period of the product can be increased by 5-10 days on average.
The operation steps of the tool in the gas-liquid separator welding will be described in detail with reference to fig. 7 and 8. The method comprises the following specific steps:
(1) the protective gas pipe seat 7 is rotated to open, so that the protective gas pipe seat can be kept away from the guide positioning disk 4.
(2) The limiting baffle 5 is rotationally adjusted to enable the second kidney-shaped hole 501 to be aligned with the first kidney-shaped hole 402 on the guiding and positioning disk 4, and the position of the limiting baffle 5 is fixed; the U-shaped pipe section 420 of the air outlet pipe 400 is inserted into the first kidney-shaped hole 402 from the upper part of the guide positioning plate 4 until the bottom of the U-shaped pipe section 420 is inserted into the second kidney-shaped hole 501 of the limit baffle 5 and is limited and blocked; meanwhile, the two ends of the upper side of the U-shaped pipe section 420 are blocked and limited by the first kidney-shaped hole 402, so that the U-shaped pipe section 420 is kept in a vertical state.
(3) Rotating and adjusting the supporting plate 6 to align the positioning groove 601 with the positioning hole 403 on the guiding and positioning disk 4; inserting the bent pipe section 520 of the air inlet pipe 500 into the positioning hole 403 from above the guiding and positioning plate 4 until the lower end of the bent pipe section 520 abuts against the positioning groove 601 of the supporting pallet 6; the sliding block 605 is moved to abut against the end surface of the lower opening of the bent pipe section 520, and when the upper opening of the bent pipe section 520 is adjusted to be in a horizontal state, the sliding block 605 is locked and fixed by the locking screw 606.
(4) The upper end cover 200 is fastened on a boss 401 of the guide positioning disc 4, the upper position and the lower position of the guide positioning disc 4 along the upright column are adjusted, one end of the U-shaped pipe section 420 penetrates through a hole reserved in the upper end cover 200, and when the welding position of the upper end cover 200 relative to the U-shaped pipe section 420 is adjusted, the position of the guide positioning disc 4 is fixed.
(5) And loosening the adjusting block 602, adjusting the position of the support supporting plate 6 up and down to enable the upper end of the bent pipe section 520 to pass through the hole reserved in the upper end cover 200, and locking the adjusting block 602 and locking and fixing the support supporting plate 6 when the position of the upper end of the bent pipe section 520 extending out of the upper end cover 200 is adjusted to meet the design requirement.
(6) The lower end of the straight outlet pipe section 410 of the outlet pipe 400 is inserted into the upper opening of the U-shaped pipe section 420, and the lower end of the straight inlet pipe section 510 of the inlet pipe 500 is inserted into the upper opening of the elbow section 520.
(7) The protection air pipe seat 7 is closed in a rotating mode, the arc clamping groove 704 of the protection air pipe seat 7 is clamped on the surface of the second upright post 3, the attraction is firm through the magnet, and meanwhile, the locking block 9 is locked; lifting and rotating the protection air pipe 8 to enable the lower stop pin 801 to align with the stop pin hole 702 on the protection air pipe seat 7, lowering the protection air pipe 8, enabling the lower stop pin 801 to penetrate through the stop pin hole 702 until the lower ends of the two protection air pipes 8 are respectively inserted into the upper end opening of the air outlet straight pipe section 410 and the upper end opening of the air inlet straight pipe section 510, and enabling the upper stop pin 802 on the protection air pipe 8 to be clamped on the upper surface of the protection air pipe seat 7 to enable the protection air pipe 8 to be positioned; at this time, the conical surface at the lower end of the protection air pipe 8 is matched with the inner conical surface at the hinged position of the air outlet straight pipe section 410 and the air inlet straight pipe section 510, so that the positioning can be well realized, and the air tightness is also good.
(8) The shielding gas pipe 8 is connected to a shielding gas source, and the shielding gas is introduced into the gas outlet pipe 400 and the gas inlet pipe 500, and the welding part is welded. The step adopts flame brazing for welding, natural gas and oxygen are adopted as welding gas, the pressure of the natural gas is 0.08-0.12MPa, and the pressure of the oxygen is 0.3-0.6MPa; the protective gas is protected by inert gas, the air pressure is 0.03-0.06MPa, the quality of the welding seam and the stability of welding are considered comprehensively, and the protective gas is obtained through long-term exploration, so that the problem that the micro-vibration caused by the blowing force of the gas on each part influences the formation and solidification of a welding pool to generate micro-cracks inside the welding seam can be avoided on the premise of ensuring the welding quality. Specifically, in this example, the natural gas pressure was 0.1MPa, the oxygen gas was 0.5MPa, and the inert gas was argon gas, and the gas pressure was 0.04MPa.
(9) After welding is finished and cooling is carried out, the introduction of the protective gas is stopped; lifting and rotating the protection air pipe 8 to enable the lower stop pin 801 to align with the stop pin hole 702 on the protection air pipe seat 7, enabling the lower stop pin 801 to penetrate through the stop pin hole 702, then placing the protection air pipe 8, and enabling the lower stop pin 801 to be clamped on the protection air pipe seat 7; and (5) opening the protective gas pipe seat 7 in a rotating way, and taking down the welded workpiece.
According to the method, the gas-liquid separator welding tool is used for fixing and welding the gas inlet pipe 500, the gas outlet pipe 400 and the upper end cover 200, the gas-liquid separator can be welded efficiently and accurately, the welding technology for welders is relatively low, the welding efficiency is improved, acid pickling treatment is not needed after welding, the production cost is reduced, and the product quality is improved.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. The utility model provides a vapour and liquid separator welding frock, includes bottom plate (1) and direction positioning disk (4), its characterized in that: the device also comprises a limit baffle (5) and a support splint (6); the bottom plate (1) is provided with two upright posts which are respectively a first upright post (2) and a second upright post (3); the guide positioning plate (4) is sleeved on the two upright posts, and is provided with a first waist-shaped hole (402) and a positioning hole (403) which penetrate through the upper surface and the lower surface; the limiting baffle (5) and the supporting plate (6) are both positioned below the guiding and positioning disc (4), the limiting baffle (5) is provided with a second waist-shaped hole (501), the second waist-shaped hole (501) corresponds to the first waist-shaped hole (402), the upper surface of the supporting plate (6) is provided with a positioning groove (601), and the positioning groove (601) corresponds to the positioning hole (403);
a boss (401) for clamping the upper end cover (200) is arranged in the middle of the upper end face of the guide positioning disc (4), and the first waist-shaped hole (402) and the positioning hole (403) are located on the boss (401); the supporting plate (6) is sleeved on the second upright post (3) through a guide hole (603) arranged at one end of the supporting plate and can be locked and fixed through a screw; an adjusting block (602) for limiting and supporting the supporting plate (6) is arranged on the second upright post (3) below the supporting plate (6);
a protective air pipe seat (7) is arranged on the upright column above the guide positioning disc (4), and two protective air pipes (8) are arranged on the protective air pipe seat and respectively correspond to the first waist-shaped hole (402) and the positioning hole (403); one end of the protective air pipe seat (7) is sleeved on the first upright post (2) through a round hole (703) which is formed in the protective air pipe seat, the other end of the protective air pipe seat is provided with an arc clamping groove (704) which is used for being clamped on the surface of the second upright post (3), and a magnet is arranged in the arc clamping groove (704); two adjusting holes (701) are formed in the protective air pipe seat (7), two protective air pipes (8) respectively penetrate through the two adjusting holes (701), and pin blocking holes (702) are communicated with the peripheral surface of each adjusting hole (701); and the protection air pipe (8) is provided with a lower stop pin (801) and an upper stop pin (802) which can pass through the stop pin hole (702) at intervals along the axial direction.
2. The gas-liquid separator welding tool according to claim 1, characterized in that: the limiting baffle (5) is arranged on the bottom plate (1), one end of the limiting baffle is sleeved on the first upright post (2) and can rotate around the first upright post (2), and the other end of the limiting baffle can be fixedly connected with the bottom plate (1); the size of the second waist-shaped hole (501) is the same as that of the first waist-shaped hole (402).
3. The gas-liquid separator welding tool according to claim 1, characterized in that: the positioning hole (403) is a rectangular hole, and one end of the positioning hole is provided with a semicircular hole (404).
4. The gas-liquid separator welding tool according to claim 3, characterized in that: the other end of the supporting plate (6) is provided with a sliding groove (604) penetrating through the upper surface and the lower surface of the supporting plate, a sliding block (605) is arranged in the positioning groove (601), and a locking screw (606) penetrates through the sliding groove (604) and then is connected with the sliding block (605).
5. The use method of the gas-liquid separator welding tool of claim 4, comprising the following operation steps of:
(1) the protective air pipe seat (7) is opened in a rotating way, so that the protective air pipe seat can block the guide positioning disc (4);
(2) the limiting baffle (5) is rotationally adjusted to enable the second waist-shaped hole (501) to be aligned with the first waist-shaped hole (402) in the guiding and positioning disc (4), and the position of the limiting baffle (5) is fixed; inserting the U-shaped pipe section (420) of the air outlet pipe (400) into the first kidney-shaped hole (402) from the upper part of the guide positioning disc (4) until the bottom of the U-shaped pipe section (420) is inserted into the second kidney-shaped hole (501) of the limiting baffle (5) and is limited and blocked; meanwhile, the two ends of the upper side of the U-shaped pipe section (420) are blocked and limited by the first kidney-shaped hole (402), so that the U-shaped pipe section (420) is kept in a vertical state;
(3) rotating and adjusting the supporting plate (6) to align the positioning groove (601) with the positioning hole (403) on the guiding and positioning disc (4); inserting the bent pipe section (520) of the air inlet pipe (500) into the positioning hole (403) from the upper part of the guide positioning disc (4) until the lower end of the bent pipe section (520) abuts against the positioning groove (601) of the support supporting plate (6); the movable sliding block (605) is propped against the end surface of the lower end opening of the bent pipe section (520), and when the upper end opening of the bent pipe section (520) is adjusted to be in a horizontal state, the sliding block (605) is locked and fixed through a locking screw (606);
(4) the upper end cover (200) is fastened on a boss (401) of the guide positioning disc (4), the upper and lower positions of the guide positioning disc (4) along the upright column are adjusted, one end of the U-shaped pipe section (420) penetrates through a hole reserved in the upper end cover (200), and when the welding position of the upper end cover (200) relative to the U-shaped pipe section (420) is adjusted, the position of the guide positioning disc (4) is fixed;
(5) loosening the adjusting block (602), adjusting the position of the supporting plate (6) up and down to enable the upper end of the bent pipe section (520) to penetrate through a reserved hole in the upper end cover (200), and locking the adjusting block (602) when the position of the upper end of the bent pipe section (520) extending out of the upper end cover (200) is adjusted to meet the design requirement, and meanwhile, locking and fixing the supporting plate (6);
(6) inserting the lower end of an air outlet straight pipe section (410) of an air outlet pipe (400) into an upper end opening of a U-shaped pipe section (420), and inserting the lower end of an air inlet straight pipe section (510) of an air inlet pipe (500) into an upper end opening of a bent pipe section (520);
(7) the protective air pipe seat (7) is closed in a rotating mode, and an arc clamping groove (704) of the protective air pipe seat (7) is clamped on the surface of the second upright post (3); lifting and rotating the protection air pipes (8), aligning the lower stop pins (801) with the stop pin holes (702) on the protection air pipe seats (7), lowering the protection air pipes (8), enabling the lower stop pins (801) to penetrate through the stop pin holes (702) until the lower ends of the two protection air pipes (8) are respectively inserted into the upper end openings of the air outlet straight pipe sections (410) and the upper end openings of the air inlet straight pipe sections (510), and enabling the upper stop pins (802) on the protection air pipes (8) to be clamped on the upper surfaces of the protection air pipe seats (7) to position the protection air pipes (8);
(8) connecting the protective gas pipe (8) with a protective gas source, introducing protective gas into the gas outlet pipe (400) and the gas inlet pipe (500), and welding the welding part;
(9) after welding is finished and cooling is carried out, the introduction of the protective gas is stopped; lifting and rotating the protection air pipe (8) to enable the lower stop pin (801) to align to the stop pin hole (702) in the protection air pipe seat (7), enabling the lower stop pin (801) to penetrate through the stop pin hole (702), then placing the protection air pipe (8), and enabling the lower stop pin (801) to be clamped on the protection air pipe seat (7); and (5) rotating to open the protective gas pipe seat (7), and taking down the welded workpiece.
6. The use method of the gas-liquid separator welding tool according to claim 5, characterized by comprising the following steps: the step (8) adopts flame brazing for welding, natural gas and oxygen are adopted as welding gas, the pressure of the natural gas is 0.08-0.12MPa, and the pressure of the oxygen is 0.3-0.6MPa; the protective gas adopts inert gas protection, and the air pressure is 0.03-0.06MPa.
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| CN109158811B (en) * | 2018-09-04 | 2020-09-25 | 浙江摩科机器人科技有限公司 | Gas-liquid separator multi-point MIG welding special fixture |
| CN109759797B (en) * | 2019-03-08 | 2020-10-16 | 青岛开拓隆海制冷配件有限公司 | Gas-liquid separator welding tool manufacturing process |
| CN113251209B (en) * | 2021-05-12 | 2021-09-21 | 蓝箭航天空间科技股份有限公司 | Pipeline sampling method for aerospace carrier |
| CN114018730B (en) * | 2022-01-10 | 2022-03-11 | 西南交通大学 | Convenient speed measurement target device based on solid particles under light gas gun impact loading |
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