CN111806853A - Converter transformer coil assembly transportation tank and assembling and fixing method - Google Patents
Converter transformer coil assembly transportation tank and assembling and fixing method Download PDFInfo
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- CN111806853A CN111806853A CN202010503866.XA CN202010503866A CN111806853A CN 111806853 A CN111806853 A CN 111806853A CN 202010503866 A CN202010503866 A CN 202010503866A CN 111806853 A CN111806853 A CN 111806853A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
- B65D25/10—Devices to locate articles in containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/20—External fittings
- B65D25/24—External fittings for spacing bases of containers from supporting surfaces, e.g. legs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a converter transformer coil assembly transportation tank, which is of a bell jar type structure, has a volume slightly larger than that of a coil assembly and comprises: the transportation tank comprises a square transportation tank bottom and a transportation tank upper tank body, wherein the transportation tank upper tank body is provided with a lower edge which is used for being hermetically buckled with the transportation tank bottom, and a tank body fastening bolt is arranged on the lower edge; the bottom of the transportation tank is provided with a threaded hole with an internal thread corresponding to the position of the fastening bolt of the tank body. The invention also relates to an assembling and fixing method before the transportation of the converter transformer coil assembly transportation tank. The invention solves the problems of the coil group of the field assembled converter transformer that the coil group is compacted before transportation and the coil group is positioned in the tank, ensures the size and the mechanical strength of the coil group after transportation, and has no deformation and displacement after long-distance transportation to the field.
Description
Technical Field
The invention belongs to the technical field of transformer production and manufacturing, and particularly relates to a large-scale field-assembled converter transformer coil assembly transportation tank and an assembling and fixing method before transportation.
Background
With the development of direct current transmission in China, in order to meet the requirement of installing a large converter transformer in a remote area with poor transportation conditions, a transformer body needs to be disassembled into a plurality of parts such as coils and iron cores, and the parts are respectively transported to the site for reassembly.
Because the field assembly type converter transformer has a special structure, the coil components of the field assembly type converter transformer comprise a voltage regulating coil, a network side coil and a valve side coil which are all of independent assembly structures and need to be separately transported. Each converter transformer needs to manufacture a plurality of coil transportation tanks to respectively transport the voltage regulating coil, the network side coil and the valve side coil, so that the transportation cost is greatly increased. In addition, in order to ensure that the coil does not deform in the transportation process, a special fixing and assembling method is required to be adopted, so that the mechanical property of the coil is enhanced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a transport tank of a large-scale decomposed converter transformer coil assembly and an assembling and fixing method before transport. The technical scheme adopted by the invention is as follows:
the utility model provides a converter transformer coil assembly transportation jar, coil assembly transportation jar be bell jar formula structure, the volume of coil assembly transportation jar slightly is greater than the coil assembly, includes: the transportation tank comprises a square transportation tank bottom and a transportation tank upper tank body, wherein the transportation tank upper tank body is provided with a lower edge which is used for being hermetically buckled with the transportation tank bottom, and a tank body fastening bolt is arranged on the lower edge; the bottom of the transport tank is provided with a threaded hole with an internal thread corresponding to the position of the tank body fastening bolt;
the lower cross beam is fixed with the bottom of the transportation tank into a whole through a lower positioning nail, a support frame is fixedly arranged at the central position of the lower cross beam, a lower cushion block is arranged at the position of the lower cross beam far away from the center, a lower cushion plate is arranged between the lower cushion block and the support frame, an end ring is arranged on the lower cushion plate, a pressure regulating coil, a net side coil and a valve side coil are sequentially sleeved outside the support frame from top to bottom, a coil group is formed by sleeving, an upper pressing plate is arranged on the upper surface of the coil group, an upper cushion block is arranged on the periphery of the upper pressing plate, and an upper cross beam is;
an upper positioning piece is fixedly arranged on the upper surface of the upper cross beam, an upper positioning piece is arranged at the contact part of the outer side of the upper cushion block and the upper cross beam, and a lower positioning piece is arranged at the contact part of the outer side of the lower cushion block and the lower cross beam;
a square nut with a threaded hole is welded on the lower part of a flange at the top of the upper tank body of the transport tank, and the position of the square nut corresponds to that of the upper positioning piece; the upper tank body of the transportation tank is buckled and sealed with the bottom of the transportation tank, the fastening bolt of the tank body is screwed, and a full-thread positioning screw rod penetrates through a square nut with a thread hole to jack the upper positioning piece.
According to the converter transformer coil assembly transportation tank, the lower cross beam is fixed with the bottom of the transportation tank, the upper cross beam is fixed with the top of the upper tank body of the transportation tank, and the upper cross beam and the lower cross beam are connected together through the support frame. After the coil assembly is compressed, the coil assembly is tightly supported through the upper cushion block and the lower cushion block, and the coil assembly is guaranteed not to shift and deform in the up-down direction and the side direction through the limiting effect of the upper side positioning piece and the lower side positioning piece.
Preferably, the upper cross beam and the lower cross beam are formed by welding H-shaped steel in a cross shape, and round holes are formed in the cross points of the lower cross beam for the lower positioning nails to penetrate through.
Preferably, the support frame is formed by welding an upper fixing plate, a lower fixing plate and root circle steel.
Preferably, the lower positioning pin comprises: the shank of bolt, the last top-down of shank of bolt sets gradually: thin nuts, thick nuts, steel washers.
Preferably, the upper positioning piece is an inverted T-shaped structure formed by welding 1 steel plate and 1 steel column, and the steel column is a cube formed by welding 4 steel plates in a splicing manner; set up triangle-shaped strengthening rib in the right angle junction outside of steel sheet and steel column, set up the round hole on four angles of steel sheet.
Preferably, the upper cushion block and the lower cushion block are both rectangular parallelepipeds and are bonded by laminated wood.
Preferably, the upper pressing plate and the lower backing plate are both circular rings and are formed by bonding paper plates, and the thickness of the upper pressing plate and the lower backing plate is 80 mm.
Preferably, the upper side positioning piece and the lower side positioning piece are of triangular steel structures, and reinforcing ribs are obliquely arranged.
Preferably, more than two reinforcing ribs are provided on the transport tank in the longitudinal direction and the transverse direction of the outer surface of the tank body, respectively.
A method for assembling and fixing a converter transformer coil assembly transportation tank comprises the following steps:
s1, mounting a lower cross beam, leveling the bottom of the transport tank by using a laser level meter before mounting, lifting the lower cross beam to fall into 4 lower positioning nails of the bottom of the transport tank, and mounting a steel washer and a nut;
s2, mounting a support frame between the upper beam and the lower beam, connecting a lower fixing plate with the thickness of 20mm of the support frame with the lower beam, and fastening the lower fixing plate and the lower beam in place by bolts;
s3, mounting a lower cushion block, and leveling by using a laser level meter;
s4, enclosing a layer of protective paper board outside the support frame, installing a lower backing plate and an end ring, and respectively sleeving a pressure regulating coil, a net side coil and a valve side coil outside the support frame;
s5, installing an upper pressure plate on the upper part of the coil group, installing a protective paper ring, installing an upper cushion block, and connecting the upper cross beam and the support frame by bolts;
s6, arranging a hydraulic cylinder at the intersection of the upper beam, pressing the coil group tightly, installing an adjusting sheet, and binding and fixing the upper cushion block and the adjusting sheet on the upper beam by using a polyester ribbon;
s7, mounting upper/lower side positioning pieces, compacting the gap by using a paper board, and binding the polyester silk ribbon by using the paper board and the side positioning pieces for fixing;
s8, enclosing a layer of 1mm thick paper board on the outer surface of the coil group, uniformly installing 8 laminated wood in the circumferential direction, binding and fixing by using a PET (polyethylene terephthalate) belt, bending the upper and lower outlet ends of the pressure regulating coil and the net side coil in advance to facilitate assembly, binding 2 layers by using crepe paper for protection, and temporarily fixing a lead before hoisting;
s9, mounting an upper positioning piece, and fixing the upper positioning piece on the upper cross beam by using a bolt; buckling the upper tank body of the transport tank, compacting a gap between the upper positioning piece and the top of the upper tank body of the transport tank by using a paperboard, and fastening a tank body fastening bolt of the upper tank body of the transport tank; a full-thread positioning screw rod penetrates through a square nut with a thread hole of a flange at the top of the upper tank body of the transport tank to tightly push against the upper positioning piece;
s10, vacuumizing to 30Pa, and keeping for more than 24 h; filling dry air to the dew point of less than or equal to minus 50 ℃ and the pressure of 35kPa, and performing leakage test for 24 hours;
and S11, installing an automatic air supply device and a nitrogen cylinder.
The method mainly comprises the steps of installing a lower cross beam and a support frame in a transport tank, installing a lower cushion block, a lower base plate and an end ring, sleeving a pressure regulating coil, a net side coil and a valve side coil, installing an upper pressing plate, installing an upper cross beam, an upper side positioning piece and a lower side positioning piece, tightly supporting after pressing a coil group, and fixing and protecting all parts after buckling an upper tank body of the transport tank.
The invention has the beneficial effects that:
the large field assembly converter transformer is of a disassembled structure, and the design structure of the coil group and the alternating current transformer are greatly different. Aiming at the special structure of the coil assembly, in order to meet the transportation requirement, the pressure regulating coil, the net side coil and the valve side coil are sleeved into one coil assembly, and are compressed by a special cross beam and transported by a special transport case.
The large-scale field assembly converter transformer coil assembly transportation tank solves the problems that the coil assembly of the field assembly converter transformer is compressed before transportation, the coil assembly is positioned in the tank, the size and the mechanical strength of the transported coil assembly are ensured, and the large-scale field assembly converter transformer has no deformation and displacement after long-distance transportation to the field, so that the large-scale field assembly converter transformer can be assembled smoothly, the problem that the large-scale field assembly converter transformer is installed in a remote area with poor transportation conditions is solved, the smooth development of direct current transmission is ensured, and the large-scale field assembly converter transformer has a wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are specific embodiments of the invention, and that other drawings within the scope of the present application can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural view of a coil block transport tank according to an embodiment of the present invention;
FIG. 2 is a top view of the bottom of a coil assembly transport tank according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a lower beam according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an upper positioning element according to an embodiment of the present invention;
FIG. 5 is a schematic view of a positioning nail under the bottom of the coil assembly transport tank according to an embodiment of the present invention;
FIG. 6 is a side view of a coil pack transport canister of an embodiment of the present invention;
in the figure, 1-transport tank upper tank body, 2-upper beam, 3-lower beam, 4-support frame, 5-upper positioning piece, 6-first lower positioning nail, 7-first upper positioning piece, 8-lower backing plate, 9-end ring, 10-upper pressing plate, 11-upper cushion block, 12-lower cushion block, 13-coil group, 14-transport tank bottom, 15-second upper positioning piece, 16-first lower positioning piece, 17-second lower positioning piece, 18-second lower positioning nail, 19-third lower positioning nail, 20-fourth lower positioning nail, 21-steel washer, 22-thin nut, 23-thick nut and 24-tank body fastening bolt.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a coil assembly transportation tank according to an embodiment of the present invention. The utility model provides a converter transformer coil pack transport tank, coil pack transport tank be the bell jar structure, the volume slightly is greater than the coil pack, includes: a square transportation tank bottom 14, and a transportation tank upper tank body 1 which can be hermetically buckled with the transportation tank bottom 14. The upper tank body 1 of the transport tank is provided with a lower edge which is used for being hermetically buckled with the bottom 14 of the transport tank, and a tank body fastening bolt 24 is arranged on the lower edge; the bottom 14 of the transport tank is provided with a threaded hole with an internal thread corresponding to the position of the tank body fastening bolt 24.
The lower cross beam 3 is fixed with the transport tank bottom 14 into a whole through a first lower positioning nail 6, a second lower positioning nail 18, a third lower positioning nail 19 and a fourth lower positioning nail 20, so that the lower cross beam 3 is firmly connected with the transport tank bottom 14, and as shown in fig. 2, the bottom plan view of the coil group transport tank is shown.
The lower cross beam 3 is formed by welding H-shaped steel in a cross shape, and round holes are formed in the intersection points for the lower positioning nails to penetrate through. Fig. 3 is a schematic structural diagram of a lower cross beam according to an embodiment of the present invention. The center position of the lower beam 3 is fixedly provided with a support frame 4, 8 corners of the lower beam 3 are respectively provided with a lower cushion block 12, a lower cushion plate 8 is arranged between the lower cushion block 12 and the support frame 4, and an end ring 9 is arranged on the lower cushion plate 8. According to the sequence from the inner diameter to the outer diameter, the pressure regulating coil, the net side coil and the valve side coil are sequentially sleeved outside the support frame 4 from top to bottom, a coil group 13 is formed by sleeving, and the pressure regulating coil, the net side coil and the valve side coil are sequentially arranged from inside to outside in the coil group 13.
An upper pressing plate 10 is arranged on the coil group 13, an upper cushion block 11 is arranged on the periphery of the upper pressing plate 10, finally, the coil group 13 is pressed through an upper beam 2 arranged on the upper cushion block 11, the lower side surface of the upper beam 2 is fixedly connected with the supporting frame 4, and the upper surface of the upper beam 2 is fixedly connected with the upper positioning piece 5. The upper cross beam 2 is formed by welding H-shaped steel in a cross shape, and 8 upper cushion blocks 11 are arranged at positions corresponding to 8 angles of the upper cross beam 2.
A first upper side positioning piece 7 and a second upper side positioning piece 15 are arranged at the contact part of the outer side of the upper cushion block 11 and the upper cross beam 2, and a first lower side positioning piece 16 and a second lower side positioning piece 17 are arranged at the contact part of the outer side of the lower cushion block 12 and the lower cross beam 3.
The supporting frame 4 is formed by welding an upper fixing plate and a lower fixing plate with 4 round steels and is used for connecting the upper cross beam 2 and the lower cross beam 3, and the supporting frame 4, the upper cross beam 2 and the lower cross beam 3 are fixed together by penetrating through the connecting plates through bolts. The lower beam 3 is mounted above the transport tank bottom 14 and is positioned with the transport tank bottom 14. The upper cross beam 2, the lower cross beam 3 and the support frame 4 form a framework together, the coil group is sleeved outside the support frame 4, and the coil group is tightly pressed through the upper cross beam 2 and the lower cross beam 3. The thickness of the upper fixing plate of the support frame 4 is 40mm, and the thickness of the lower fixing plate of the support frame 4 is 20 mm.
The upper cushion block 11 and the lower cushion block 12 are both cuboid and are formed by bonding laminated wood. The lower cushion block 12 is arranged on the lower beam 3 and is pressed by the weight of the coil group, so that the lower cushion block does not need to be fixed; the upper cushion block 11 is arranged between an upper pressing plate 10 at the top of the coil group and the upper crossbeam 2, the upper cushion block 11 is firstly placed on the upper pressing plate 10, then the upper crossbeam 2 is pressed, the gap between the upper cushion block 11 and the upper crossbeam 2 is tightly plugged by an adjusting sheet after the coil group is pressed by a hydraulic cylinder, and finally the upper crossbeam 2 and the upper cushion block 11 are tightly bound by a polyester ribbon after the hydraulic cylinder is decompressed. Because the upper/lower part of the coil group is longer, the upper beam 2 and the lower beam 3 cannot be directly installed with the coil group, and must be raised by a certain height, and the upper cushion block 11 and the lower cushion block 12 are used for adjusting the height. According to the shape characteristics of the upper cross beam 2 and the lower cross beam 3, the upper cushion blocks 11 are arranged below 8 corners of the upper cross beam 2, and 8 pieces are arranged; the lower cushion blocks 12 are arranged on the upper surfaces of 8 corners of the lower cross beam 3, and 8 pieces are arranged.
The upper pressing plate 10 and the lower base plate 8 are both circular rings and are formed by bonding paperboards, the thickness of the upper pressing plate and the lower base plate is 80mm, and the upper pressing plate and the lower base plate are used for supporting the pressure regulating coil, the net side coil and the valve side coil, so that the three coils form an integral coil group, and the integral coil group can be integrally lifted out after being transported. The end ring 9 is made of paper board, and laminated cushion blocks are adhered to the paper board ring and used for guiding oil and supporting the coil.
The upper positioning piece 5 is an inverted T-shaped structure formed by welding 1 steel plate and 1 steel column, and the steel column is a cube formed by welding 4 steel plates in a splicing manner. And a triangular reinforcing rib is arranged on the outer side of the right-angle joint of the steel plate and the steel column. Round holes are arranged at four corners of the steel plate, and the upper positioning piece 5 and the upper cross beam 2 are connected and fixed through 4M 30-80 bolts. Fig. 4 is a schematic structural diagram of an upper positioning element according to an embodiment of the present invention.
The lower part of a flange at the top of the tank body 1 on the transport tank is welded with 4 square nuts with screw holes, and the positions of the square nuts correspond to the steel columns of the upper positioning piece 5. After the transport tank upper tank body 1 and the transport tank bottom 14 are buckled and sealed, the tank body fastening bolt 24 is screwed down, and the transport tank upper tank body 1 and the transport tank bottom 14 are firmly connected into a whole. Penetrate four angles of steel column of setting element 5 in full silk positioning screw top tightly from the square nut department of taking the silk hole, through last setting element 5 and transport tank on jar body 1 the full silk positioning screw cooperation top tightly, the effect is the fastening connection of guaranteeing upper beam 2 and transport tank on jar body 1, prevents to take place the displacement in the transportation.
The first upper side positioning piece 7, the second upper side positioning piece 15, the first lower side positioning piece 16 and the second lower side positioning piece 17 are of triangular steel structures, and reinforcing ribs are obliquely arranged. The first upper positioning piece 7 and the second upper positioning piece 15 are positioning pieces for fixing the coil assembly upper pressing plate 10, and are fixed on the lower surface of the upper cross beam 2 by bolts, so that the coil assembly upper pressing plate 10 and the coil assembly are prevented from transversely shifting, and the number of the positioning pieces is preferably 8. The lower side positioning pieces 16 and the second lower side positioning pieces 17 are positioning workpieces of the lower backing plates 8 and the end rings 9, are fixed on the upper surface of the lower cross beam 3 through bolts, prevent the lower backing plates 8 and the end rings 9 of the coil group from transversely displacing, and the number of the lower positioning pieces and the second lower positioning pieces can be set to be 8 preferably.
In fig. 1, the black vertical line area in the upper half shows the upper end of the voltage regulating coil, which is composed of 16 lines; the black vertical line area at the lower half part shows the lower end of the voltage regulating coil, and the lower end of the voltage regulating coil is composed of 16 lines.
Fig. 5 is a schematic view of a structure of a positioning nail below the bottom of a coil assembly transportation tank according to an embodiment of the invention. The lower locating peg includes: the shank of bolt, the last top-down of shank of bolt sets gradually: thin nut 22, thick nut 23, steel washer 21. The thick/thin nuts are matched and fastened, so that the bolt bar can be well prevented from loosening, the lower cross beam 3 and the bottom 14 of the transportation tank can be firmly fixed, and the integral structure formed by the coil group and the upper/lower cross beams cannot shift during transportation of the tank body.
Fig. 6 is a side view of a coil assembly transportation tank according to an embodiment of the present invention. More than two reinforcing ribs are respectively arranged on the outer surface of the tank body 1 of the transport tank in the longitudinal direction and the transverse direction so as to improve the mechanical strength of the tank body 1 of the transport tank.
As a preferred embodiment, the outer dimension of the tank body 1 on the transport tank is as follows: the diameter of the inner wall is 3950mm, the inner height is 4364mm, the transportation width is 4255mm, the transportation height is 4487mm, and the weight of the tank body is 16.5 t. The tank body can bear the pressure of 133Pa vacuum and 50kPa positive pressure, the function of conveying by filling dry air after vacuumizing can be realized, and the coil is prevented from being damped in the conveying process.
A method for assembling and fixing a transport tank of a converter transformer coil assembly comprises the following steps:
and S1, mounting the lower cross beam.
Before installation, the bottom of the transportation tank is leveled by a laser level meter, the levelness deviation is required to be less than or equal to 1mm, and uneven bottom is leveled by a paperboard strip. The lower lifting beam falls into 4 lower positioning nails at the bottom of the tank, and a steel washer and a nut are installed to be firmly fastened.
And S2, mounting the support frame between the upper cross beam and the lower cross beam, and fastening the support frame in place by using M30X 60 bolts. The direction is noted during the installation, and the bottom plate that support frame thickness is 20mm is connected with the bottom end rail, prevents to adorn reversely.
And S3, mounting a lower cushion block, wherein the height of the cushion block is 340 mm. During installation, the interval between the support frame and the attention device meets the requirement of a drawing. The lower cushion block is relatively heavy, so that the lower cushion block is safe to be lifted and prevented from falling. Marking lines of the inner diameter and the outer diameter of the coil group are marked on the lower cushion block in advance, so that the falling position of the coil group can be observed conveniently. Leveling by a laser level meter, wherein the levelness deviation is less than or equal to 1 mm.
And S4, enclosing a layer of protective paper board outside the support frame, installing a lower backing plate and an end ring, respectively sleeving a pressure regulating coil, a net side coil and a valve side coil for assembly, and tightly sleeving. One person should stand on the support frame when the pressure regulating coil is assembled and falls down, and the observation coil cannot collide with the support frame. When the coil falls to the bottom, the coil falls down according to the marking line of the inner diameter and the outer diameter, so that the eccentricity of the coil is prevented.
And S5, mounting an upper pressing plate on the upper part of the coil group and mounting a protective paper ring. An upper cushion block is arranged at the lower part of the upper cross beam, only an integral cushion block with the height of 330mm is arranged at the moment, the adjusting sheet is not arranged temporarily, and the distance between the upper cushion block and the supporting frame is noticed to meet the requirement of a drawing during installation. The upper cross beam is lifted and placed on the support frame, and the positions of the upper cross beam and the lower cross beam are aligned by the crane weight without being inclined. And connecting the upper cross beam and the supporting frame by using M30-70 bolts, and fastening firmly by using a wrench.
S6, arranging 4 50T hydraulic cylinders at 4 cross points of the upper cross beam, heightening the lower parts of the hydraulic cylinders by using 300 x 300 laminated wood blocks, pressing the coil groups according to the pressure of the single column 917kN, installing adjusting sheets after pressing, and relieving pressure after tightening. The upper cushion block and the adjusting sheet are bound and fixed on the upper cross beam by polyester silk ribbons, so that loosening and displacement in the transportation process are prevented.
S7, installing upper/lower side positioning pieces, compacting the gap by using a paper board, and binding the polyester silk ribbon to fix the paper board and the side positioning pieces.
S8, enclosing a layer of 1mm thick paper board on the outer surface of the coil group to serve as protection, uniformly installing 8 laminated wood parts in the circumferential direction, and binding and fixing the laminated wood parts by using a PET tape. The upper and lower ends of the pressure regulating coil and the net side coil are bent in advance to facilitate assembly, 2 layers are wrapped by crepe paper to be protected, and the lead needs to be temporarily fixed before lifting.
And S9, mounting the upper positioning piece, fixing the upper positioning piece on the upper cross beam by using M30X 80 bolts, and fastening the upper positioning piece in place. And buckling the upper tank body of the transport tank, compacting a gap between the upper positioning piece and the top of the upper tank body of the transport tank by using a paperboard, fastening a tank body fastening bolt of the upper tank body of the transport tank, and ensuring that the upper tank body of the transport tank is fastened and connected with the bottom of the transport tank. The square nuts with the screw holes of 4 of the top flange of the tank body on the transport tank penetrate into the full-screw positioning screw rods, and the four corners of the positioning piece are tightly pressed against each other, so that the fastening of the tank body on the upper cross beam and the transport tank is ensured, and the displacement in transportation is prevented.
And S10, vacuumizing to 30Pa, and keeping for more than 24 h. The dew point of the charged dry air is less than or equal to minus 50 ℃, the dry air is charged to the pressure of 35kPa, and leakage test is carried out for 24 hours.
And S11, installing accessories such as an automatic air supply device, a nitrogen cylinder and the like.
Finally, it is to be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (10)
1. The utility model provides a converter transformer coil assembly transportation jar, coil assembly transportation jar be bell jar formula structure, the volume of coil assembly transportation jar slightly is greater than the coil assembly, its characterized in that includes: the transportation tank comprises a square transportation tank bottom (14) and a transportation tank upper tank body (1), wherein the transportation tank upper tank body (1) is provided with a lower edge which is used for being hermetically buckled with the transportation tank bottom (14), and a tank body fastening bolt (24) is arranged on the lower edge; a threaded hole with an inner thread corresponding to the position of a tank body fastening bolt (24) is arranged on the bottom (14) of the transportation tank;
the lower cross beam (3) is fixed with the bottom (14) of the transportation tank into a whole through a lower positioning nail, a support frame (4) is fixedly arranged at the central position of the lower cross beam (3), a lower cushion block (12) is arranged at the position, far away from the center, of the lower cross beam (3), a lower cushion block (8) is arranged between the lower cushion block (12) and the support frame (4), an end ring (9) is arranged on the lower cushion block (8), a pressure regulating coil, a net side coil and a valve side coil are sequentially sleeved outside the support frame (4) from top to bottom to form a coil group (13), an upper pressing plate (10) is arranged on the coil group (13), an upper cushion block (11) is arranged on the periphery of the upper pressing plate (10), and an upper cross beam (2) is arranged on the upper cushion block (11);
an upper positioning piece (5) is fixedly arranged on the upper surface of the upper cross beam (2), an upper positioning piece is arranged at the contact part of the outer side of the upper cushion block (11) and the upper cross beam (2), and a lower positioning piece is arranged at the contact part of the outer side of the lower cushion block (12) and the lower cross beam (3);
a square nut with a threaded hole is welded on the lower part of a flange at the top of the tank body (1) on the transport tank, and the position of the square nut corresponds to that of the upper positioning piece (5); the upper tank body (1) of the transportation tank is buckled and sealed with the bottom (14) of the transportation tank, the fastening bolt (24) of the tank body is screwed, and a full-thread positioning screw penetrates through the square nut with a thread hole to jack the upper positioning piece (5).
2. The converter transformer coil assembly transport tank of claim 1, wherein the upper cross beam (2) and the lower cross beam (3) are formed by welding H-shaped steel in a cross shape, and round holes are formed in the cross points of the lower cross beam (3) for lower positioning nails to penetrate through.
3. The transportation tank for the coil assembly of the converter transformer according to claim 2, wherein the supporting frame (4) is formed by welding an upper/lower fixing plate and 4 round steels.
4. The transport tank for a converter transformer coil assembly according to claim 3, wherein said lower positioning nail comprises: the shank of bolt, the last top-down of shank of bolt sets gradually: a thin nut (22), a thick nut (23) and a steel washer (21).
5. The transport tank for the converter transformer coil assembly according to claim 4, wherein the upper positioning member (5) is an inverted T-shaped structure formed by welding 1 steel plate and 1 steel column, and the steel column is a cube formed by welding 4 steel plates; set up triangle-shaped strengthening rib in the right angle junction outside of steel sheet and steel column, set up the round hole on four angles of steel sheet.
6. The transportation tank for the coil assembly of the converter transformer according to claim 5, wherein the upper cushion block (11) and the lower cushion block (12) are both rectangular parallelepiped in shape and are bonded and processed by laminated wood.
7. The transportation tank for the converter transformer coil assembly according to claim 6, wherein the upper pressing plate (10) and the lower backing plate (8) are both circular rings and are formed by bonding paperboards, and the thickness of the upper pressing plate and the lower backing plate is 80 mm.
8. The transportation tank for the coil assembly of the converter transformer as claimed in claim 7, wherein the upper positioning member and the lower positioning member are of a triangular steel structure, and reinforcing ribs are obliquely arranged.
9. A transport tank for a converter transformer coil assembly according to any one of claims 1 to 8, characterized in that more than two reinforcing ribs are provided on the transport tank in the longitudinal and transverse directions of the outer surface of the tank body (1).
10. A method for assembling and fixing a transportation tank of a converter transformer coil assembly, characterized in that the transportation tank of a converter transformer coil assembly according to claim 9 is applied, comprising the steps of:
s1, mounting a lower cross beam, leveling the bottom of the transport tank by using a laser level meter before mounting, lifting the lower cross beam to fall into 4 lower positioning nails of the bottom of the transport tank, and mounting a steel washer and a nut;
s2, mounting a support frame between the upper beam and the lower beam, connecting a lower fixing plate with the thickness of 20mm of the support frame with the lower beam, and fastening the lower fixing plate and the lower beam in place by bolts;
s3, mounting a lower cushion block, and leveling by using a laser level meter;
s4, enclosing a layer of protective paper board outside the support frame, installing a lower backing plate and an end ring, and respectively sleeving a pressure regulating coil, a net side coil and a valve side coil outside the support frame;
s5, installing an upper pressure plate on the upper part of the coil group, installing a protective paper ring, installing an upper cushion block, and connecting the upper cross beam and the support frame by bolts;
s6, arranging a hydraulic cylinder at the intersection of the upper beam, pressing the coil group tightly, installing an adjusting sheet, and binding and fixing the upper cushion block and the adjusting sheet on the upper beam by using a polyester ribbon;
s7, mounting upper/lower side positioning pieces, compacting the gap by using a paper board, and binding the polyester silk ribbon by using the paper board and the side positioning pieces for fixing;
s8, enclosing a layer of 1mm thick paper board on the outer surface of the coil group, uniformly installing 8 laminated wood in the circumferential direction, binding and fixing by using a PET (polyethylene terephthalate) belt, bending the upper and lower outlet ends of the pressure regulating coil and the net side coil in advance to facilitate assembly, binding 2 layers by using crepe paper for protection, and temporarily fixing a lead before hoisting;
s9, mounting an upper positioning piece, and fixing the upper positioning piece on the upper cross beam by using a bolt; buckling the upper tank body of the transport tank, compacting a gap between the upper positioning piece and the top of the upper tank body of the transport tank by using a paperboard, and fastening a tank body fastening bolt of the upper tank body of the transport tank; a full-thread positioning screw rod penetrates through a square nut with a thread hole of a flange at the top of the upper tank body of the transport tank to tightly push against the upper positioning piece;
s10, vacuumizing to 30Pa, and keeping for more than 24 h; filling dry air to the dew point of less than or equal to minus 50 ℃ and the pressure of 35kPa, and performing leakage test for 24 hours;
and S11, installing an automatic air supply device and a nitrogen cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503866.XA CN111806853A (en) | 2020-06-05 | 2020-06-05 | Converter transformer coil assembly transportation tank and assembling and fixing method |
| PCT/CN2020/137758 WO2021244009A1 (en) | 2020-06-05 | 2020-12-18 | Coil assembly transportation tank for converter transformer and assembling and fixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503866.XA CN111806853A (en) | 2020-06-05 | 2020-06-05 | Converter transformer coil assembly transportation tank and assembling and fixing method |
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| Publication Number | Publication Date |
|---|---|
| CN111806853A true CN111806853A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010503866.XA Pending CN111806853A (en) | 2020-06-05 | 2020-06-05 | Converter transformer coil assembly transportation tank and assembling and fixing method |
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| Country | Link |
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| CN (1) | CN111806853A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244009A1 (en) * | 2020-06-05 | 2021-12-09 | 山东电力设备有限公司 | Coil assembly transportation tank for converter transformer and assembling and fixing method |
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Application publication date: 20201023 |