CN112658550A - Butt welding auxiliary device for single-side welding and double-side forming of small-diameter circular pipe and construction method - Google Patents
Butt welding auxiliary device for single-side welding and double-side forming of small-diameter circular pipe and construction method Download PDFInfo
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- CN112658550A CN112658550A CN202110001103.XA CN202110001103A CN112658550A CN 112658550 A CN112658550 A CN 112658550A CN 202110001103 A CN202110001103 A CN 202110001103A CN 112658550 A CN112658550 A CN 112658550A
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Abstract
The invention discloses a butt welding auxiliary device for single-side welding and double-side forming of a small-caliber circular tube and a construction method. The construction method fixes the ceramic liner on the inner side of the welding seam of the first round pipe and the second round pipe through the auxiliary device. The invention does not need operators to enter the circular tube, overcomes the size limitation of the small-caliber circular tube, has high assembly degree and improves the welding construction efficiency.
Description
Technical Field
The invention relates to the technical field of butt welding construction of single-side welding and double-side forming of small-caliber circular tubes, in particular to a butt welding auxiliary device for single-side welding and double-side forming of small-caliber circular tubes and a construction method.
Background
In the welding construction of a steel structure, for some parts to be welded with special shapes (such as boiler pressure vessel components), a double-sided welding process cannot be adopted, and only a welding technology of single-sided welding and double-sided forming can be adopted. As shown in fig. 1 and 2, a conventional single-side welding and two-side forming method is to adhere a ceramic liner 4 to the back surfaces of a weld 205 of a first circular tube 201 and a second circular tube 202 by an adhesive tape 204, and then welding is performed on only one side of a steel structure, so that the same welding effect can be achieved on two sides of the steel structure, and the welding efficiency is improved. However, the welding of the steel pipe is limited to a large-diameter steel pipe by the method, and people can enter the ceramic liner 4.
In a building steel structure, steel pipes are mainly used for bearing weight, are not used for storing or transporting materials, have small caliber and cannot be accessed by people, and when butt welding is carried out on the two small-caliber circular steel pipes, workers cannot easily enter the circular steel pipes to stick ceramic liners, so that the conventional single-side welding and two-side forming welding construction cannot be carried out; if the ceramic liner is not pasted and is only fixed through simple physical friction, the ceramic liner is easy to slide in the field welding process, the precision of the splicing interface is not easy to control, and the welding quality of single-side welding and double-side forming is seriously influenced.
In order to accurately and reliably fix the ceramic liner at the butt welding position of two small-size circular steel pipes and facilitate the construction of single-side welding and double-side forming welding, the invention needs to invent a butt welding auxiliary device and a construction method suitable for the single-side welding and double-side forming of the small-size circular steel pipes.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a butt welding auxiliary device for single-side welding and double-side forming of a small-caliber circular tube, which can accurately and reliably assist in fixing a ceramic liner so as to be beneficial to improving the welding quality.
In order to solve the technical problem, the butt welding auxiliary device for the single-side welding and double-side forming of the small-caliber circular tube comprises a main body framework, a ceramic liner, a main limiting device and an auxiliary limiting device, wherein the main body framework comprises a supporting tube and a liner framework arranged in the middle of the supporting tube, the ceramic liner is fixed on the liner framework, and the main limiting device and the auxiliary limiting device are arranged on the supporting tube and are respectively arranged on two sides of the liner framework; the main limiting device comprises a plurality of circular-arc main limiting plates, each main limiting plate is connected with the supporting tube through a plurality of hollow elastic connecting pieces, adjacent main limiting plates are connected through a foldable connecting rod, the connecting rods are located on the inner sides of the main limiting plates, and when the main limiting plates are not subjected to external force, the maximum rotating diameter of all the main limiting plates is larger than the inner diameter of a circular tube to be welded; the cavity of the elastic connecting piece is connected with a first glue injection pipe through a one-way valve, the outer side surface of the main limiting plate is provided with a groove with two blocked ends, the groove is connected with a second glue injection pipe, the first glue injection pipe penetrates through the supporting pipe, and the second glue injection pipe penetrates out of the inner side of the main limiting plate; the auxiliary limiting device comprises a plurality of circular-arc auxiliary limiting plates, each auxiliary limiting plate is connected with the supporting tube through a plurality of auxiliary supporting springs, adjacent auxiliary limiting plates are connected through a foldable connecting rod, the connecting rod is located on the inner side of each auxiliary limiting plate, and when the auxiliary limiting plates are not subjected to external force, the maximum rotary diameter of all the auxiliary limiting plates is larger than the inner diameter of a circular tube to be welded.
In order to facilitate the insertion of the circular tube to be welded, the ends of the main limiting plate and the auxiliary limiting plate, which are far away from the ceramic liner, are connected with tail plates, the tail ends of which shrink towards the direction close to the supporting tube.
In order to facilitate the opening and closing of the adjacent main limiting plate or the auxiliary limiting plate, the connecting rod comprises a first rod body and a second rod body, one end of the first rod body and one end of the second rod body are connected through bolts, one end of the first rod body and one end of the second rod body are respectively connected with lug plates through bolt rotation, and the two lug plates are respectively fixed on the side edges or the inner side surfaces of the two main limiting plates or the auxiliary limiting plates.
In order to treat that the welding pipe has better supporting effect, main limiting plate and vice limiting plate respectively have four, be equipped with axial through-hole on the liner skeleton, the second injecting glue pipe is worn out the back from main limiting plate's inboard and is passed the through-hole of liner skeleton and the inboard of vice limiting plate in proper order and stretch out outside vice stop device.
Hollow elastic connecting piece include the main tributary and prop up the spring and insert the elasticity pipe in the main tributary props up the spring, the main tributary props up the spring and fixes respectively on main limiting plate and stay tube with the both ends of elasticity pipe, be equipped with on the stay tube with the gluey hole of advancing of elasticity pipe intercommunication, first injecting glue pipe advances gluey hole intercommunication with all on the stay tube, the import of check valve setting at the elasticity pipe. The colloid inside the elastic tube is restrained by the spring after being solidified, so that strong support can be provided for the main limiting plate, the maximum static friction force between the main limiting plate and the circular tube to be welded is increased, and the auxiliary device and the circular tube to be welded are effectively and reliably fixed.
In order to facilitate monitoring, a colloid monitoring sensor is arranged in the elastic tube. Through the simple harmonic amplitude of the novel sensor of real-time supervision under different medium states, the solidification state of colloid in the intelligent recognition elastic tube to effectively reduce whole construction cycle, guarantee simultaneously auxiliary device and treat the reliable connection of welding the pipe.
Colloid monitoring sensor include closed housing, the inside piezoceramics piece that contacts from the bottom to the top of casing is equipped with in proper order, metal bar and spring, the spring both sides are equipped with the same coil, the coil is fixed with the casing through the plastics pole, the inside lateral wall of casing is equipped with the signal of telecommunication excitation device with piezoceramics piece electric connection, be equipped with signal collection and wireless transmitting device at the inside lateral wall relative with signal of telecommunication excitation device of casing, be provided with the battery for signal of telecommunication excitation device and signal collection and wireless transmitting device power supply in the casing.
In order to ensure that the entering lengths of all the main limiting plates or all the auxiliary limiting plates are consistent when the auxiliary device enters the steel pipe to be welded and to avoid the auxiliary device from being inclined during installation, the main limiting plate and the auxiliary limiting plates are provided with length scales, and 0 scale of the length scales on the main limiting plate and the auxiliary limiting plate is located at one end adjacent to the ceramic liner.
The invention relates to a construction method for single-side welding and double-side forming of a small-caliber circular tube, which adopts any one of the butt welding auxiliary devices for single-side welding and double-side forming of the small-caliber circular tube in the items 1 to 7, and ceramic liners are fixed on the inner sides of the welding seams of a first circular tube and a second circular tube through the auxiliary devices.
The invention relates to a construction method for single-side welding and double-side forming of a small-caliber circular tube, which adopts the butt welding auxiliary device for single-side welding and double-side forming of the small-caliber circular tube in item 8, and the construction method comprises the following steps: (1) positioning the first circular tube; (2) inserting the auxiliary device main limiting device into the first circular pipe until the central position of the ceramic liner reaches the pipe orifice of the first circular pipe, automatically attaching the main limiting plate entering the first circular pipe to the inner wall of the first circular pipe under the action of the elastic connecting piece, and keeping the length scales of the pipe orifice position of the first circular pipe on all the main limiting plates at the same size position in the inserting process; (3) injecting glue to the second glue injection pipe through the glue injection machine for the first time, so that a proper amount of glue is injected into the groove, and the main limiting plate is bonded with the first circular pipe; (4) injecting glue to the first glue injection pipe through the glue injection machine for the second time, wherein the glue is injected into the inner cavity of the elastic connecting piece; (5) and (3) judging the solidification state of the colloid: adopting a colloid monitoring control and display to receive a signal of a corresponding colloid monitoring sensor, observing the amplitude of the colloid monitoring sensor, and judging that the colloid is in a completely solidified state when the amplitude of the sensor exceeds a threshold value; the colloid monitoring control and display comprises a signal receiving device, a signal processing device and a signal display device, wherein the signal receiving device is used for receiving signals, the signal processing device is used for processing and converting the received electric signals, and then the simple harmonic amplitude of the colloid monitoring sensor is obtained and displayed by the signal display device; when the detection results of all the colloid monitoring sensors are in a complete solidification state, hoisting a second circular tube, inserting an auxiliary limiting device into the second circular tube until the second circular tube is sleeved on the ceramic liner, wherein the first circular tube and the second circular tube have a certain gap, automatically sticking the auxiliary limiting plate entering the second circular tube to the inner wall of the second circular tube under the action of an auxiliary supporting spring, and keeping the length scales of the pipe orifice positions of the second circular tube on all the auxiliary limiting plates at the same size position in the inserting process; (6) and (6) welding.
The invention has the beneficial effects that: the auxiliary device can operate and fix the ceramic liner from the outside, an operator does not need to enter the round pipe, the size limitation of the small-caliber round pipe is overcome, the main limiting device and the auxiliary limiting device are elastically pressed and tightly attached to the corresponding round pipe, and the main limiting device and the corresponding round pipe are fixed through the two layers of bonding protection systems, so that the ceramic liner is accurately positioned, and the integral stability is ensured. The auxiliary device has high assembly degree, and the parts of the auxiliary device are directly installed and used on a welding site after being prefabricated, processed and assembled in a factory. The assembly degree is high, has improved welding efficiency. And the auxiliary device and the two circular pipes to be welded are connected in an inserting mode, glue is injected outside the circular pipes, and construction is simple and convenient.
Drawings
FIG. 1 is a schematic structural view of a conventional single-side welding double-side forming weld joint;
FIG. 2 is a schematic diagram of a conventional round tube single-side welding and double-side forming structure;
FIG. 3 is a schematic view of the welding operation of the present invention;
FIG. 4 is a schematic structural diagram of an auxiliary device according to the present invention;
FIG. 5 is a schematic view of the main skeleton structure of the present invention;
FIG. 6 is a schematic view of the ceramic liner structure of the present invention;
FIG. 7 is a schematic diagram of a main limiting plate according to the present invention;
FIG. 8 is a schematic view of a connecting rod structure of the present invention;
FIG. 9 is a schematic structural view of the elastic tube of the present invention;
FIG. 10 is a schematic diagram of a colloid monitoring sensor according to the present invention;
FIG. 11 is a schematic view of a colloid monitor control and display according to the present invention;
FIG. 12 is a schematic structural view of the glue injection machine of the present invention;
FIG. 13 is a simple harmonic amplitude plot of the sensor in air;
FIG. 14 is a simple harmonic amplitude plot of the sensor when the gel is not fully solidified;
fig. 15 is a graph of the simple harmonic amplitude of the sensor when the gel is fully solidified.
In the figure: the device comprises a main limiting plate 1, a liner framework 2, a supporting tube 3, a ceramic liner 4, a main supporting spring 5, an elastic tube 6, a connecting rod 7, a second glue injection tube 8, a groove 9, a glue inlet hole 10, a length scale 11, a tail plate 12, a bolt 13, a first rod body 14, a bolt 15, an ear plate 16, a one-way valve 17, a glue injection machine 18, a glue monitoring sensor 19, a length scale 20, a second rod body 21, a signal receiving device 22, a signal processing device 23, a pair of limiting plates 24, a signal display device 25, a glue inlet hole 26, a first glue injection tube 27, a pair of supporting springs 28, a shell 101, a coil 102, a spring 103, a miniature battery 104, an electric signal excitation device 105, a signal collection and wireless transmission device 106, a piezoelectric ceramic plate 107, a metal rod 108, a first circular tube 201, a second circular tube 202, an auxiliary device, an adhesive tape 204 and.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The auxiliary device 203 shown in fig. 3-12 is used for a butt welding auxiliary device for single-side welding and double-side forming of a small-diameter circular tube, and comprises a main body framework, a ceramic liner 4, a main limiting device and an auxiliary limiting device, wherein the main body framework comprises a supporting tube 3 and a liner framework 2 arranged in the middle of the supporting tube 3, the ceramic liner 4 is fixed on the liner framework 2, an axial through hole is formed in the liner framework 2, and the main limiting device and the auxiliary limiting device are both arranged on the supporting tube 3 and are respectively arranged on two sides of the liner framework 2; main stop device includes four circular-arc main limiting plate 1, every main limiting plate 1 is connected with stay tube 3 through a plurality of hollow elastic connection spare, hollow elastic connection spare includes main supporting spring 5 and inserts the elasticity pipe 6 in main supporting spring 5, main supporting spring 5 and the both ends of elasticity pipe 6 are fixed respectively on main limiting plate 1 and stay tube 3, be equipped with on the stay tube 3 advance gluey hole 26 with elasticity pipe 6 intercommunication, first injecting glue pipe 27 and all advance gluey hole 26 intercommunications on the stay tube 3. The adjacent main limiting plates 1 are connected through foldable connecting rods 7, the connecting rods 7 are positioned at the inner sides of the main limiting plates 1, and when the main limiting plates 1 are not subjected to external force, the maximum rotating diameter of all the main limiting plates 1 is larger than the inner diameter of the first circular tube 201; the outer side surface of the main limiting plate 1 is provided with a groove 9 with two blocked ends, glue can be prevented from overflowing from two ends of the groove, two glue inlet holes 10 are respectively arranged at two ends of the groove 9, each glue inlet hole 10 is connected with a second glue injection pipe 8, the first glue injection pipe 27 penetrates through the supporting pipe 3, and the second glue injection pipe 8 penetrates out of the inner side of the main limiting plate 1; the auxiliary limiting device comprises a plurality of circular-arc auxiliary limiting plates 24, each auxiliary limiting plate 24 is connected with the supporting tube 3 through a plurality of auxiliary supporting springs 28, adjacent auxiliary limiting plates 24 are connected through foldable connecting rods 7, the connecting rods 7 are located on the inner sides of the auxiliary limiting plates 24, and when the auxiliary limiting plates 24 do not bear external force, the maximum rotating diameter of all the auxiliary limiting plates 24 is larger than the inner diameter of the second circular tube 202. After the second glue injection pipe 8 penetrates out of the inner side of the main limiting plate 1, the through hole of the liner framework 2 and the inner side of the auxiliary limiting plate 24 are sequentially penetrated, and the auxiliary device 203 is extended out of the through hole, the second glue injection pipe 8 is only convenient to see in the display of the second glue injection pipe 8 in fig. 3, and the second glue injection pipe 8 is not in a state of practical application.
The main limit plate 1 is provided with a length scale 11, the auxiliary limit plate 24 is provided with a length scale 20, and the length scale 11 and the 0 scale of the length scale 20 are both positioned at one end adjacent to the ceramic liner 4. The tail plates 12 with the tail ends contracting towards the direction close to the support tube 3 are connected to the ends of the main limit plate and the auxiliary limit plate 24 far away from the ceramic liner 4, so that the tail ends of the tail plates 12 have smaller turning radius and are easy to insert into corresponding circular tubes to be welded. The connecting rod 7 comprises a first rod body 14 and a second rod body 21, one end of the first rod body 14 is connected with one end of the second rod body 21 through a bolt 15, one end of the first rod body 14 and one end of the second rod body 21 are respectively connected with an ear plate 16 in a rotating mode through a bolt 13, and the two ear plates 16 are respectively fixed on the side edges or inner side faces of the two main limiting plates 1 or the auxiliary limiting plate 24.
A colloid monitoring sensor 19 is arranged in the elastic tube 6, a check valve 17 is arranged at the inlet of the elastic tube 6, the colloid monitoring sensor 19 comprises a closed shell 101, a piezoelectric ceramic piece 107, a metal rod 108 and a spring 103 which are contacted with each other are sequentially arranged in the shell 101 from the bottom end to the top end, the piezoelectric ceramic piece 107 is connected with one side of the metal rod 108, the other side of the metal rod 108 is connected with the spring 103, the other side of the spring 103 is connected with the upper wall in the shell 101, the two sides of the spring 103 are provided with the same coil 102, the coil 102 is fixed with the shell 101 through a plastic rod, an electric signal excitation device 105 which is electrically connected with the piezoelectric ceramic piece 107 is arranged on one side wall in the shell 101, a signal collection and wireless transmission device 106 is arranged on the side wall in the shell 101 opposite to the electric signal excitation device 105, and a battery for, the battery is a micro battery 104. The outside of the closed casing 101 is fixedly connected with the inner wall of the elastic tube 6 through a plurality of thin lines, so that the colloid monitoring sensor 19 is suspended in the middle of the orifice of the elastic tube 6, and the colloid monitoring sensor 19 is injected with glue all around. The elastic tube 6 may be a corrugated tube.
The manufacturing method of the auxiliary device 203 is as follows:
a) and (5) preparing. According to the design size, each part of the auxiliary device is prefabricated and processed in a factory, and after the processing is finished, the whole auxiliary device is assembled.
b) And manufacturing and mounting the main limit plate 1. According to a drawing, length scales 11 are marked on each main limit plate 1, and then a groove 9 is formed in each main limit plate 1. And then respectively drilling two glue inlet holes 10 at the bottom of the groove 9 to install the second glue injection pipe 8. After the four main limiting plates 1 are manufactured, the main limiting plates 1 and the supporting tubes 3 are connected into a whole through the plurality of main supporting springs 5 and the elastic tubes 6 and fixed by using super glue. The cross-sectional dimension of main part skeleton and the height of main tributary supporting spring 5 and elastic tube 6 should follow and acquire through calculating according to different projects to guarantee that auxiliary device installs the back that finishes, main limiting plate 1 is located same height with ceramic liner 4. The section size of this device should be greater than the closed circular cross-section of steel construction for spring 5 has certain reaction force to the steel construction inner wall, improves auxiliary device's stability.
c) Mounting of the tail plate 12 of the main limit plate. The tail plate 12 is connected with the main limiting plate 1, a certain slope angle is arranged at the position, so that the tail end of the tail plate 12 is inclined inwards, and the steel structure plays a role in guiding when being butted with an auxiliary device. After the tail plate 12 is finished, the tail plate is directly connected with the tail part of the main limit plate 1 through super glue.
d) The manufacturing and installation of the connecting rod 7, after the installation of the main limiting plate 1 and the tail plate 12 is completed, firstly, the lug plate 16, the first rod body 14 and the second rod body 21 are connected into a whole by the bolts 13 and 15, and then the lug plate 16 is adhered to the side edges of the adjacent main limiting plate 1 and the adjacent tail plate 12 by the super glue. The arrangement of the ear plate 16 ensures that the connecting rod 7 rotates in a plane, and the stability of the auxiliary device is further improved.
e) And (5) mounting the secondary limit plate 24. The size of the auxiliary limiting plate is provided with a drawing for manufacturing, the central position of the outer surface of the auxiliary limiting plate 24 is marked with auxiliary length scales 20, and the joint of the auxiliary limiting plate 24 and the main body framework spring is fixed by using super glue.
f) Mounting of the ceramic liner 4. After the ceramic liner framework is installed, the ceramic liner 4 is adhered to the corresponding position on the ceramic liner framework through the super glue, and the smoothness of the outer surface of the ceramic liner framework is guaranteed. Care is taken to preserve the integrity of the ceramic liner 4 when installing the auxiliary device.
g) And (6) installing a second glue injection pipe 8. And the second glue injection pipe 8 penetrates out of the glue inlet hole 10 and is adhered to the groove 9 through strong glue. Eight second glue injection pipes 8 penetrate out of the whole auxiliary device outside the ceramic liner so as to be connected with the glue injection machine 18.
h) And (6) installing the first glue injection pipe 27. The elastic tube glue injection pipe 27 penetrates the middle of the support tube 3 and penetrates out of the glue inlet hole 26 through a branch pipeline, and one end of the elastic tube glue injection pipe is connected with the elastic tube 6.
The construction method for single-side welding and double-side forming of the small-caliber circular tube in the embodiment adopts the butt welding auxiliary device for single-side welding and double-side forming of the small-caliber circular tube in the embodiment, and the first circular tube and the second circular tube both adopt steel tubes, and the construction method comprises the following steps:
(1) positioning the first circular tube;
(2) inserting a main limiting device of the auxiliary device 203 into the first circular tube 201 until the central position of the ceramic liner reaches the tube orifice of the first circular tube 201, automatically attaching the main limiting plate 1 entering the first circular tube 201 to the inner wall of the first circular tube 201 under the action of the elastic connecting piece, and keeping the length scales of the tube orifice position of the first circular tube 201 on all the main limiting plates 1 at the same size position in the inserting process;
(3) injecting glue for the first time, namely injecting glue into the second glue injection pipe 8 through the glue injection machine 18, so that a proper amount of glue is injected into the groove 9, and the main limiting plate 1 is bonded with the first circular pipe 201;
(4) injecting glue for the second time, namely injecting glue into the first glue injection pipe 27 through the glue injection machine 18, and injecting the glue into the inner cavity of the elastic pipe 6;
(5) after the colloid in the elastic tube 6 is solidified, hoisting the second circular tube 202, inserting the auxiliary limiting device into the second circular tube 202 until the second circular tube 202 is sleeved on the ceramic liner 4, wherein a certain gap is reserved between the first circular tube 201 and the second circular tube 202, the gap is generally controlled to be 5mm, the auxiliary limiting plate 24 entering the second circular tube is automatically attached to the inner wall of the second circular tube 202 under the action of the auxiliary supporting spring 28, and the length scales of the tube opening position of the second circular tube 202 on all the auxiliary limiting plates 24 are kept at the same size position in the inserting process;
the micro battery 104 supplies power to the electric signal excitation device 105, the electric signal excitation device 105 generates electric signal excitation, the piezoelectric ceramic piece 107 generates mechanical vibration under the electric signal excitation, and then the metal rod 108 and the spring 103 are driven to vibrate, so that the whole vibration is driven. In the vibration process, based on the electromagnetic induction principle, the metal rod 108 makes a motion of cutting a magnetic induction line in a magnetic field generated by the electrified coil 102, so that the metal rod 108 generates an induced current, and then a generated electric signal is collected, processed and transmitted to an external colloid monitoring control and display device through the signal collecting and wireless transmitting device 106, wherein the colloid monitoring control and display device comprises a signal receiving device 22, a signal processing device 23 and a signal display device 25, the signal is received through the signal receiving device 22, and the received electric signal is processed and converted through the signal processing device 23, so that the simple harmonic amplitude of the colloid monitoring sensor is obtained and displayed through the signal display device 25.
FIG. 13 is a simple harmonic amplitude plot of a colloid-monitored sensor in air, with less damping produced by the air and less effect on the vibration of the sensor, which has a greater amplitude; FIG. 14 is a graph of the simple harmonic amplitude of the resulting sensor when a gel is poured around the sensor, the damping produced by the flowing gel having a greater effect on the vibration of the sensor, and the resulting sensor having a reduced amplitude; fig. 15 is a simple harmonic amplitude plot of the resulting sensor with the gel fully set, which produces greater damping and a strong resistance to vibration of the sensor, at which time the resulting sensor amplitude is further reduced. And (3) judging the solidification state of the colloid: and opening the colloid monitoring control and display, observing the amplitude of the colloid monitoring sensor, judging that the colloid is in a completely solidified state when the amplitude of the sensor exceeds a threshold value, and installing and positioning the second circular tube 202.
(6) And (6) welding. After the first circular tube 201 and the second circular tube 202 are assembled in place, welding construction is started. During welding, welding is carried out along the central line position of the ceramic liner 4, and after welding is completed, the welding seam is detected, so that the quality of the welding seam is ensured to meet the standard requirement. This welded steel pipe is used for building steel structure, and auxiliary device can be retained in the steel pipe. The plastic material used for the components of the auxiliary device has no influence on the use of the steel pipe.
Before welding, the ceramic liner 4 is attached to the inner walls of the first circular tube 201 and the second circular tube 202, and fig. 2 and 3 only show that the sizes of the pipe openings of the first circular tube 201 and the second circular tube 202 are drawn to be larger for the convenience of seeing the insertion relation between the ceramic liner 4 and the first circular tube 201 and the second circular tube 202.
The glue injected into the first glue injection pipe 27 and the second glue injection pipe 8 by the glue injection machine 18 mainly comprises two components, namely modified epoxy resin and a curing agent, and has the characteristics of environmental protection, quick setting, high strength and strong fluidity, for example, the commercially available YZJ-5 crack repair glue (injection) or YZJ-7 crack sealing glue can be adopted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a two-sided fashioned butt welding auxiliary device of small-bore pipe single face welding which characterized in that: the ceramic gasket is fixed on the gasket framework, and the main limiting device and the auxiliary limiting device are both arranged on the supporting tube and are respectively arranged on two sides of the gasket framework; the main limiting device comprises a plurality of circular-arc main limiting plates, each main limiting plate is connected with the supporting tube through a plurality of hollow elastic connecting pieces, adjacent main limiting plates are connected through a foldable connecting rod, the connecting rods are located on the inner sides of the main limiting plates, and when the main limiting plates are not subjected to external force, the maximum rotating diameter of all the main limiting plates is larger than the inner diameter of a circular tube to be welded; the cavity of the elastic connecting piece is connected with a first glue injection pipe through a one-way valve, the outer side surface of the main limiting plate is provided with a groove with two blocked ends, the groove is connected with a second glue injection pipe, the first glue injection pipe penetrates through the supporting pipe, and the second glue injection pipe penetrates out of the inner side of the main limiting plate; the auxiliary limiting device comprises a plurality of circular-arc auxiliary limiting plates, each auxiliary limiting plate is connected with the supporting tube through a plurality of auxiliary supporting springs, adjacent auxiliary limiting plates are connected through a foldable connecting rod, the connecting rod is located on the inner side of each auxiliary limiting plate, and when the auxiliary limiting plates are not subjected to external force, the maximum rotary diameter of all the auxiliary limiting plates is larger than the inner diameter of a circular tube to be welded.
2. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 1, characterized in that: and the ends, far away from the ceramic liner, of the main limiting plate and the auxiliary limiting plate are both connected with tail plates, the tail ends of which shrink towards the direction close to the supporting tube.
3. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 2, characterized in that: the connecting rod include the first body of rod and the second body of rod, bolted connection is passed through to the one end of the first body of rod and the one end of the second body of rod, the one end of the first body of rod and the one end of the second body of rod respectively are connected with the otic placode through the bolt rotation, two otic placodes are fixed respectively on the side or the medial surface of two main limiting plate or vice limiting plate.
4. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 3, characterized in that: the number of the main limiting plates and the number of the auxiliary limiting plates are four respectively, the liner framework is provided with an axial through hole, and the second glue injection pipe penetrates through the through hole of the liner framework and the inner side of the auxiliary limiting plate in sequence after penetrating out of the inner side of the main limiting plate and then extends out of the auxiliary limiting device.
5. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 1, characterized in that: hollow elastic connecting piece include the main tributary and prop up the spring and insert the elasticity pipe in the main tributary props up the spring, the main tributary props up the spring and fixes respectively on main limiting plate and stay tube with the both ends of elasticity pipe, be equipped with on the stay tube with the gluey hole of advancing of elasticity pipe intercommunication, first injecting glue pipe advances gluey hole intercommunication with all on the stay tube, the import of check valve setting at the elasticity pipe.
6. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 5, characterized in that: and a colloid monitoring sensor is arranged in the elastic tube.
7. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 6, characterized in that: colloid monitoring sensor include closed housing, the inside piezoceramics piece that contacts from the bottom to the top of casing is equipped with in proper order, metal bar and spring, the spring both sides are equipped with the same coil, the coil is fixed with the casing through the plastics pole, the inside lateral wall of casing is equipped with the signal of telecommunication excitation device with piezoceramics piece electric connection, be equipped with signal collection and wireless transmitting device at the inside lateral wall relative with signal of telecommunication excitation device of casing, be provided with the battery for signal of telecommunication excitation device and signal collection and wireless transmitting device power supply in the casing.
8. The small-caliber circular tube single-side welding and double-side forming butt welding auxiliary device according to claim 7, characterized in that: the main limiting plate and the auxiliary limiting plate are both provided with length scales, and 0 scale of the length scales on the main limiting plate and the auxiliary limiting plate is located at one end adjacent to the ceramic liner.
9. A construction method for single-side welding and double-side forming of a small-caliber circular tube is characterized by comprising the following steps of: the butt welding assisting apparatus for single-side welding and double-side forming of a small-caliber circular pipe according to any one of claims 1 to 8, wherein a ceramic liner is fixed to the inside of the weld of the first circular pipe and the second circular pipe by the assisting apparatus.
10. A construction method for single-side welding and double-side forming of a small-caliber circular tube is characterized by comprising the following steps of: the butt welding auxiliary device for single-side welding and double-side forming of the small-caliber circular tube according to claim 8, wherein the construction method comprises the following steps: (1) positioning the first circular tube; (2) inserting the auxiliary device main limiting device into the first circular pipe until the central position of the ceramic liner reaches the pipe orifice of the first circular pipe, automatically attaching the main limiting plate entering the first circular pipe to the inner wall of the first circular pipe under the action of the elastic connecting piece, and keeping the length scales of the pipe orifice position of the first circular pipe on all the main limiting plates at the same size position in the inserting process; (3) injecting glue to the second glue injection pipe through the glue injection machine for the first time, so that a proper amount of glue is injected into the groove, and the main limiting plate is bonded with the first circular pipe; (4) injecting glue to the first glue injection pipe through the glue injection machine for the second time, wherein the glue is injected into the inner cavity of the elastic connecting piece; (5) and (3) judging the solidification state of the colloid: adopting a colloid monitoring control and display to receive a signal of a corresponding colloid monitoring sensor, observing the amplitude of the colloid monitoring sensor, and judging that the colloid is in a completely solidified state when the amplitude of the sensor exceeds a threshold value; the colloid monitoring control and display comprises a signal receiving device, a signal processing device and a signal display device, wherein the signal receiving device is used for receiving signals, the signal processing device is used for processing and converting the received electric signals, and then the simple harmonic amplitude of the colloid monitoring sensor is obtained and displayed by the signal display device; when the detection results of all the colloid monitoring sensors are in a complete solidification state, hoisting a second circular tube, inserting an auxiliary limiting device into the second circular tube until the second circular tube is sleeved on the ceramic liner, wherein the first circular tube and the second circular tube have a certain gap, automatically sticking the auxiliary limiting plate entering the second circular tube to the inner wall of the second circular tube under the action of an auxiliary supporting spring, and keeping the length scales of the pipe orifice positions of the second circular tube on all the auxiliary limiting plates at the same size position in the inserting process; (6) and (6) welding.
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| CN202110001103.XA CN112658550B (en) | 2021-01-04 | 2021-01-04 | Butt welding auxiliary device for single-side welding and double-side forming of small-diameter circular pipe and construction method |
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| CN202110001103.XA CN112658550B (en) | 2021-01-04 | 2021-01-04 | Butt welding auxiliary device for single-side welding and double-side forming of small-diameter circular pipe and construction method |
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| CN112658550B CN112658550B (en) | 2022-03-29 |
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| BR8801526A (en) * | 1987-04-03 | 1988-11-08 | Fischer Ag Georg | APPLIANCE AND PROCESS FOR FUSING THE FIRST AND SECOND CONNECTION END |
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| CN211759517U (en) * | 2020-03-04 | 2020-10-27 | 柳州宝途汽车科技有限公司 | Positioning fixture convenient for carbon tank welding |
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2021
- 2021-01-04 CN CN202110001103.XA patent/CN112658550B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR8801526A (en) * | 1987-04-03 | 1988-11-08 | Fischer Ag Georg | APPLIANCE AND PROCESS FOR FUSING THE FIRST AND SECOND CONNECTION END |
| CN201483185U (en) * | 2009-05-08 | 2010-05-26 | 青岛科技大学 | Magnetic bracket for welding ceramic gasket |
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