CN210594906U - Internal part lifting appliance of high-temperature gas cooled reactor steam generator - Google Patents
Internal part lifting appliance of high-temperature gas cooled reactor steam generator Download PDFInfo
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- CN210594906U CN210594906U CN201921422335.7U CN201921422335U CN210594906U CN 210594906 U CN210594906 U CN 210594906U CN 201921422335 U CN201921422335 U CN 201921422335U CN 210594906 U CN210594906 U CN 210594906U
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Abstract
The utility model discloses a high temperature gas cooled reactor steam generator internal part hanger, which comprises an annular hanging beam, a hanging beam pull rod and a self-locking mechanism which are connected in sequence, wherein the annular hanging beam is connected with a crane hook head and can move the hanger, the self-locking mechanism realizes the lifting of the internal part, the hanger is in a free state, the hook head I and the hook head II can hook the lower edge of a lifting hole under the action of gravity, the lifting of the internal part can be stably realized, after the hanger is lifted to a special position, the hanger is separated from the internal part by tightening the hook head I and the hook head II, the lifting of the internal part is completed, the hanger provided by the utility model solves the problems that the space in a steam generator cylinder is narrow and the internal part lifting assembly is difficult to carry out, the hanger has simple and novel structure, reasonable design, reliable use, high safety factor, convenient disassembly and strong practicability, and the lifting method by adopting the hanger is simple and controllable, and the implementation is easy.
Description
Technical Field
The utility model belongs to the nuclear power field, concretely relates to high temperature gas cooled piles steam generator internals hoist.
Background
The high temperature gas cooled reactor steam generator has no public report of any enterprise worldwide to complete the processing and manufacturing. When internal parts of a nuclear power high-temperature gas cooled reactor steam generator are hoisted and assembled inside the internal parts, the internal parts cannot be operated below the internal parts due to the fact that the space inside the barrel is small, construction difficulty is high, and collision and scraping are prone to occurring, so that hoisting and assembling of the internal parts can not be achieved by using lifting appliances such as lifting belts.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the inventor of the invention has conducted an intensive study, and designs a lifting appliance for internal parts of a high temperature gas cooled reactor steam generator, which comprises an annular lifting beam, a lifting beam pull rod and a self-locking mechanism which are connected in sequence, wherein the annular lifting beam is connected with a crane hook head and can move the lifting appliance, the self-locking mechanism realizes the lifting of the internal parts, the lifting appliance is in a free state, the hook head I and the hook head II of the self-locking mechanism can hook the lower edge of a lifting hole under the action of gravity, the lifting of the internal parts can be stably realized, after the lifting is carried to a special position, the lifting appliance is separated from the internal parts by tightening the hook head I and the hook head II, and the lifting of the internal parts is completed, the lifting appliance provided by the utility model solves the problems that the steam generator cylinder is narrow in space and the internal parts are difficult to be lifted and assembled, the lifting appliance, the dismantlement is convenient, and the practicality is strong, and the hoist and mount method of adopting this hoist is simple controllable, easily realizes to accomplish the utility model discloses.
An object of the utility model is to provide a high temperature gas cooled piles steam generator internals hoist, this hoist is including the annular hanging beam, hanging beam pull rod and the self-locking mechanism that connect gradually.
The annular hanging beam is provided with a hanging beam through hole, the top end of the hanging beam pull rod penetrates through the hanging beam through hole to be connected with the annular hanging beam, the bottom end of the hanging beam pull rod is movably connected with the self-locking mechanism, and the circumference of the internal part is provided with a hanging hole for hanging.
The self-locking mechanism comprises a connecting rod I, a connecting rod II and a connecting rod III, the connecting rod II and the connecting rod III are connected with the connecting rod I, a through hole is formed in the bottom end of the hanging beam pull rod, two through holes are formed in two ends of the connecting rod I respectively, and the connecting rods I are located on opposite surfaces of the through hole in the bottom end of the hanging beam pull rod and are connected with the hanging beam pull rod through a shaft I.
The connecting rods II and III are provided with through holes, are positioned between the two connecting rods I and are connected with the connecting rods I through shafts II.
Wherein, connecting rod II is connected with clip hook I, clip hook I includes top I, elbow I and gib head I, connecting rod III is connected with clip hook II, clip hook II includes top II, elbow II and gib head II, clip hook I is connected with clip hook II.
Wherein, top I is equipped with the through-hole, connecting rod II passes through axle III swing joint with top I, be equipped with the through-hole on the top II, connecting rod III passes through axle IV swing joint with top II, elbow I is connected with elbow II, preferably is connected through axle V, elbow I's crooked direction is opposite with elbow II's crooked direction, gib head I is opposite with gib head II's direction.
The shaft III is further connected with a locking plate, a clamping groove is formed in the locking plate, the width of the clamping groove is larger than the diameter of the shaft IV, when the shaft IV is clamped by the clamping groove of the locking plate, the maximum distance between the hook head I and the hook head II is smaller than the aperture of the inner part hole, when the shaft IV is disengaged from the clamping groove of the locking plate, the distance between the hook head I and the hook head II is larger than the aperture of the inner part hole when the lifting appliance is in a vertical state, and the distance between the hook head I and the hook head II is.
Wherein, self-locking mechanism still includes outer the support, outer support sleeve is established in the outside of pressing from both sides hook I and pressing from both sides hook II, all be equipped with the through-hole on the opposite face of outer support, the through-hole of outer support passes through axle V and is connected with elbow I and elbow II, elbow I and elbow II are located between two through-holes of outer support, the length or the width of outer support are greater than the aperture of hole for hoist and mount lower part.
The clamping hook II comprises a hollow groove, the clamping hook I can enter the hollow groove, the clamping surfaces of the hook head I and the hook head II are perpendicular to the axis of the hoisting hole, a groove is formed in the shaft I, a shaft clamping plate is arranged in the groove and connected with a connecting rod I, a check ring is sleeved on the shaft V, and the check ring is located on the outer side of the outer support.
The utility model discloses the beneficial effect who has does:
(1) the high temperature gas cooled reactor steam generator internal part lifting appliance provided by the utility model is designed with a self-locking mechanism, when the lifting appliance is in a free state, the distance between the hook head I and the hook head is automatically increased due to the action of gravity, the internal part lifting hole is blocked, and the internal part is lifted;
(2) the utility model provides a hanger which is provided with a locking plate, when the hanger is continuously moved downwards, the outer supporting plate is clamped on the upper edge of a hoisting hole, so that the locking plate is easy to clamp a shaft IV, a clamping hook I and a clamping hook II are in a tightening state, and the hanger can be separated from an internal part;
(3) the connection between the hanging beam pull rod and the self-locking mechanism of the lifting appliance provided by the utility model is a movable connection, the height of the hanging beam pull rod is adjustable, the tightening and spreading states of the clamp hook I and the clamp hook II on the self-locking mechanism are controllable, and the realization is easy;
(4) the utility model provides a hoist simple structure, reasonable in design use reliably, and factor of safety is high, and it is convenient to dismantle, adopts the utility model provides a hoist carries out the hoist and mount of internals, and the method is simple controllable, can realize at steam generator and hoist and mount efficiently, can realize accurate hoist and mount.
Drawings
Fig. 1 shows a schematic structural view of an inner part according to a preferred embodiment of the invention;
fig. 2 is a schematic structural view of an annular suspension beam according to a preferred embodiment of the present invention;
fig. 3 is a schematic structural view illustrating a boom link according to a preferred embodiment of the present invention;
fig. 4 is a schematic structural view of a self-locking mechanism according to a preferred embodiment of the present invention;
fig. 5 shows a schematic structural view of a clip I according to a preferred embodiment of the present invention;
fig. 6 shows a schematic structural view of a clip hook II according to a preferred embodiment of the present invention;
fig. 7 shows a schematic structural view of a connecting rod I according to a preferred embodiment of the present invention;
fig. 8 shows a schematic structural view of a connecting rod II according to a preferred embodiment of the present invention;
fig. 9 shows a schematic structural view of a connecting rod III according to a preferred embodiment of the present invention;
fig. 10 shows a schematic structural view of an outer support according to a preferred embodiment of the present invention;
fig. 11 shows a schematic structural view of a shaft I of a preferred embodiment of the present invention;
fig. 12 is a schematic structural view showing a lock plate according to a preferred embodiment of the present invention;
fig. 13 is a schematic structural view of a shaft clamping plate according to a preferred embodiment of the present invention;
fig. 14 shows a schematic structural view of a retainer ring according to a preferred embodiment of the present invention;
fig. 15 shows a schematic structural diagram of a spreader according to a preferred embodiment of the present invention.
The reference numbers illustrate:
100-internals;
200-ring-shaped hanging beam;
300-a self-locking mechanism;
400-column structure;
1-hoisting holes;
2-conical surface structure;
3-reinforcing rib plate;
4-hanging beam through holes;
5-hanging beam pull rod;
6-pin shaft hole;
7-connecting rod I;
8-connecting rod II;
9-connecting rod III;
10-clip hook I;
101-top I;
102-elbow I;
103-hook head I;
11-clip hook II;
111-Top II;
112-elbow II;
113-hook head II;
12-a locking plate;
13-outer support;
14-axis I;
15-axis II;
16-axis V;
17-shaft clamp plate;
18-adjusting the cushion block;
19-a retainer ring.
Detailed Description
The invention is explained in more detail below with reference to the drawings and preferred embodiments. The features and advantages of the present invention will become more apparent from the description.
The utility model discloses in, when carrying out steam generator's installation, need with steam generator internals 100 handling to the steam generator barrel in, and embolia on the cylinder structure 400, after assembling, internals 100 is located between steam generator barrel inner wall and the cylinder structure 400 outer wall, steam generator barrel internals 100 need make the axis of internals 100 and the axis coincidence of barrel and cylinder structure 400 when installing, thereby make internals can assemble smoothly, but because steam generator barrel inner space is narrow and small, only internals top space can utilize, and the unable operation in below, use hoists and the device of the unable realization of internals such as suspender to internals, thereby make the assembly to internals more difficult.
Therefore, in view of the above problems, an aspect of the present invention is to provide a high temperature gas cooled reactor steam generator internals hanger, as shown in fig. 1-15.
According to the utility model discloses, as shown in fig. 1, wherein, fig. 1a is the longitudinal section structure schematic diagram of internals, and fig. 1b is the schematic diagram of overlooking of internals, and fig. 1c is the schematic diagram of the structure of hole for hoist and conical surface, and high temperature gas cooler steam generator internals 100 have cavity discoid structure, and internals 100 has the mounting hole that is used for the hole for hoist 1 and is used for the installation on the circumferencial direction, the mounting hole is located the outside of internals, and the equidistance distributes on the internals circumferencial direction, and the axis of hole for hoist 1 and mounting hole is parallel with the axis of internals.
According to the utility model discloses, the two parts that take over the direction on interior spare 100 divide into interior spare 100 symmetry all are equipped with hole for hoist 1 in the both sides of taking over the direction, and hole for hoist 1 is symmetric distribution about taking over the direction, and preferably, hole for hoist 1's number is 14, is equipped with 7 hole for hoist respectively in the both sides of taking over the direction.
According to the utility model discloses, in same one side of takeover direction, interval between adjacent hole for hoist 1 equals.
According to the utility model discloses, in the same one side of takeover direction, contained angle between the line at the center of two adjacent hole for hoist 1 and internals center equals, and preferred contained angle is 18 ~ 20, more preferably 19.
According to the invention, the hollow part of the inner part has a conical surface structure 2, the conical angle of the conical surface structure 2 being 30-60 °, preferably 40 °. Therefore, the inner diameter of the inner member gradually increases from the upper end to the lower end of the inner member.
According to the utility model relates to an optimized embodiment, the external diameter of internals is 3500 ~ 4000mm, and the internal diameter of internals is 2500 ~ 3200mm, and the thickness of this internals is 220 ~ 260mm, and the degree of depth of hole for hoist is 140 ~ 160mm, preferably 150 mm.
According to the utility model relates to a preferred embodiment, hole for hoist 1 is the counter bore, and the internal diameter on counter bore upper portion is 250mm, and the internal diameter of counter bore lower part is 233 mm.
According to the utility model discloses, design a high temperature gas cooled and pile steam generator internals hoist, realize the hoist and mount to internals, make the steady hoist and mount of internals inside the steam generator barrel, assemble.
According to the utility model discloses, high temperature gas cooled piles steam generator internals hoist including the annular hanging beam 200, hanging beam pull rod 5 and the self-locking mechanism 300 that connect gradually.
According to the utility model discloses, as shown in fig. 2, wherein, fig. 2a is annular hanging beam's main structure schematic diagram of looking, fig. 2b is E-E cross-sectional diagram in fig. 2a, annular hanging beam 200's axis and perpendicular to the ground, preferred annular hanging beam 200's upper end and driving hook are connected, the removal through driving hook realizes annular hanging beam 200's removal, preferred annular hanging beam 200's upper end is connected with driving hook through two round pins axle, make the hoist be connected more firmly with driving hook, thereby realize the steady handling of hoist to internals.
According to the utility model discloses, be equipped with deep floor 3 in annular hanging beam 200's top, preferred deep floor 3 and annular hanging beam top welded connection increase annular hanging beam's intensity. In order to reduce the weight and the strength of the annular hanging beam, a plurality of hollow structures are arranged inside the annular hanging beam.
According to the utility model discloses, be equipped with hanging beam through-hole 4 on the outer circumference of following of annular hanging beam 200, the top of hanging beam pull rod is passed this hanging beam through-hole 4 and is connected with annular hanging beam, and under free state, the axis and the ground vertical of hanging beam pull rod, the plane and the ground parallel of annular hanging beam lower extreme.
According to the utility model discloses preferred embodiment, for the stationarity and the steadiness of guaranteeing the handling, select 8 hole for hoist 1 on the internals to hoist, be equipped with 8 hanging beam through-holes 4 on the annular hanging beam 200, correspondingly, be connected with 8 hanging beam pull rods 5 on the annular hanging beam.
According to a preferred embodiment of the present invention, the ring-shaped hanging beam has a rated load of 200T and is made of Q345B.
According to the utility model discloses preferred embodiment is equipped with the enhancement circle in the top of annular hanging beam through-hole 4, and the enhancement circle is the cylinder structure that internal diameter and through-hole aperture equal, and the enhancement circle is welded connection with annular hanging beam upper surface, and when annular hanging beam was connected with hanging beam pull rod 5, the nut contacted with the enhancement circle.
The utility model discloses in, every enhancement circle increases six plug welds of department and beats double groove, and full penetration welding, butt joint department need carry out radiographic inspection.
According to the utility model discloses, as shown in fig. 3, wherein fig. 3a is the front view schematic diagram of hanging beam pull rod, and fig. 3b is the side view, and the upper end of hanging beam pull rod 5 is equipped with trapezoidal round thread, and the model is TY80 x 10 (trapezoidal round thread external diameter is 80mm, and the pitch is 10mm), and trapezoidal round thread is hoist and mount special screw thread, can guarantee the intensity and the stationarity of hoist and mount. The hanging beam pull rod 5 penetrates through the hanging beam through hole 4, so that the trapezoidal circular thread part is positioned above the hanging beam through hole 4, the upper end of the hanging beam pull rod 5 positioned on the annular hanging beam is connected with the annular hanging beam through two nuts matched with the trapezoidal circular thread, one of the two nuts is a spare nut, the hanging beam pull rod 5 is movably connected with the annular hanging beam, and the length of the hanging beam pull rod 5 positioned below the annular hanging beam can be adjusted through adjusting the nuts.
According to the utility model relates to a preferred embodiment, trapezoidal circle screw thread's length is 400 ~ 600mm, preferably 500mm, and the thickness of nut is 50 ~ 70mm, preferably 60 mm.
According to the utility model discloses, be equipped with round pin shaft hole 6 at the lower extreme of hanging beam pull rod 5, the hanging beam pull rod passes through round pin shaft hole 6 to be connected with self-locking mechanism, preferably swing joint.
According to a preferred embodiment of the present invention, the material of the hanging beam pull rod 5 is 40Cr quenched and tempered with a hardness of HRC-30-35. When the device is used for processing, the horizontal and vertical section flaw detection of the variable-section shaft hole is required. The material of the self-locking mechanism is Q345B.
According to the utility model discloses, the lower extreme and the self-locking mechanism 300 of hanging beam pull rod 5 are connected, preferably swing joint. The number of the hanging beam pull rods 5 corresponds to the number of the self-locking mechanisms 300 one by one, the lower ends of the self-locking mechanisms 300 can extend into hoisting holes of the internal parts, and when the internal parts are hoisted, after the self-locking mechanisms hoist the internal parts, the axis of the internal parts can be parallel to the axis of the steam generator barrel.
According to the present invention, as shown in fig. 4, fig. 4a is a schematic front view structure diagram of the self-locking mechanism, fig. 4B is a side view, fig. 4C is a schematic B-B cross-sectional view in fig. 4B, fig. 4d is a schematic C-C cross-sectional view in fig. 4B, and fig. 4e is a schematic three-dimensional structure diagram of the self-locking mechanism. The self-locking mechanism comprises a connecting rod I7, a connecting rod II8 and a connecting rod III9, wherein the connecting rod II8 and the connecting rod III9 are connected with the connecting rod I7, two ends of the connecting rod I7 are respectively provided with a through hole, the connecting rod II8 is provided with a through hole, and the connecting rod III9 is provided with a through hole.
According to the preferred embodiment of the present invention, as shown in fig. 7-9, fig. 7a is a schematic front view of a connecting rod I, fig. 7b is a schematic sectional view taken along a line a-a of fig. 7a, and fig. 7c is a schematic three-dimensional structure of the connecting rod I. Fig. 8a is a front view of the connecting rod II, fig. 8b is a sectional view taken along line a-a of fig. 8a, and fig. 8c is a three-dimensional structure of the connecting rod II. Fig. 9a is a front view of a connecting rod III, fig. 9B is a sectional view of B-B of fig. 9a, and fig. 9c is a three-dimensional structure of the connecting rod III.
According to the utility model discloses preferred embodiment, connecting rod I7 is equipped with two, the opposite face of the both sides of the through-hole of hanging beam pull rod 5 lower extreme is the plane, the axis of through-hole is perpendicular with the plane, when hanging beam pull rod 5 is connected with self-locking mechanism, the through-hole of hanging beam pull rod 5 bottom is located between two connecting rod I7, the plane of the through-hole both sides of hanging beam pull rod 5 bottom respectively with two connecting rod I7 contacts, and two connecting rod I7 parallel arrangement, the through-hole of hanging beam pull rod 5 bottom is corresponding with the through-hole of the one end on two connecting rod I7, axle I14 passes the through-hole of the one end on connecting rod I7 and the through-hole on hanging beam pull rod 5, realize hanging beam pull rod 5 and connecting rod I7.
According to the present invention, as shown in fig. 11, fig. 11a is a front view of the shaft I, fig. 11B is a sectional view taken along a line a-a of fig. 11a, and fig. 11c is a sectional view taken along a line B-B of fig. 11 a. Still be equipped with the recess on axle I14, be equipped with axle cardboard 17 in the recess, be equipped with two round holes on the axle cardboard 17, axle cardboard 17 is connected through two round holes and connecting rod I7, and preferably fixed connection guarantees the steadiness that axle I14 connects.
According to the utility model discloses preferred embodiment, connecting rod I7 is connected with connecting rod II8 and connecting rod III9 through axle II15, and connecting rod II8 and connecting rod III9 clamp side by side and are located between two connecting rods I7, and axle II15 passes the through-hole of two connecting rod I7 other ends and the through-hole of connecting rod II8 and connecting rod III9, realizes connecting rod I7 and connecting rod II8 and connecting rod III 9.
According to the utility model discloses, connecting rod II8 is equipped with two, and connecting rod III9 is located between two connecting rods II8, the firm of connecting rod II8 and connecting rod III9 of being convenient for.
According to the utility model relates to a preferred embodiment is equipped with the recess on the axle II15, is equipped with axle cardboard 17 in the recess, is equipped with two round holes (bolt hole) on the axle cardboard 17, and the axle cardboard is connected with connecting rod I, realizes the stability that axle II connects.
The utility model discloses in, connecting rod I7 one end is swing joint with the lower extreme of hanging beam pull rod 5, and connecting rod I7's one end can rotate around axle I, and connecting rod I7's the other end also is swing joint with connecting rod II8 and connecting rod III 9's one end, all can rotate around axle II.
According to the utility model, the other end of the connecting rod II8 is connected with one end of the clamping hook I10 through a shaft III, preferably through a pin shaft; the other end of the connecting rod III9 is connected with one end of the clamping hook II11 through a shaft IV, preferably through a pin shaft; clip I10 and clip II 11.
According to the utility model discloses, still be equipped with the recess on axle III, be equipped with axle cardboard 17 in the recess, be equipped with two round holes on the axle cardboard 17, the axle cardboard is connected with connecting rod II through two round holes, and preferably fixed connection guarantees the steadiness that axle III connects.
According to the utility model discloses, still be equipped with the recess on axle IV, be equipped with axle cardboard 17 in the recess, as shown in fig. 13, fig. 13a is the front view schematic diagram of axle cardboard, and fig. 13b is A-A section schematic diagram in fig. 13a, is equipped with two round holes on the axle cardboard 17, and axle cardboard 17 is connected with connecting rod III9 through two round holes, and preferably fixed connection guarantees the steadiness that axle IV connects.
According to the present invention, as shown in fig. 5 and 6, wherein fig. 5a is a front view schematic structure diagram of the clip hook I, and fig. 5b is a three-dimensional schematic structure diagram of the clip hook I. Fig. 6a is a front view, fig. 6b is a side view, fig. 6c is a sectional view taken along line a-a in fig. 6b, and fig. 6d is a three-dimensional structure of the clip hook II. Clip I10 and clip II11 each have an elbow-shaped structure, clip I10 comprising a top I101, an elbow I102 and a hook head I103 connected in series. The top I101 is provided with a through hole, the elbow I102 is provided with a through hole, and the connecting rod II7 is connected with the through hole of the top I101 through a pin shaft.
According to the utility model discloses, clip II11 is equipped with the through-hole on top II111 of clip II11 including top II111, elbow II112 and gib head II113 that connect gradually, clip II11 on the elbow II 112.
According to the utility model discloses preferred embodiment is equipped with the cavity groove on the clip II11, and preferably, the width of cavity groove is greater than the thickness of clip I. More preferably, the clip II is made of two clips I with a certain distance.
According to the invention, the elbow I102 of the clip I10 and the elbow II112 of the clip II11 are movably connected by a shaft V16, preferably by a pin.
According to the utility model discloses, the material of axle I14, axle II15, axle III, axle IV and axle V16 is 40 Cr.
According to the present invention, as shown in fig. 10, wherein fig. 10a is a front view of the outer support, fig. 10b is a schematic sectional view taken along a line a-a in fig. 10a, and fig. 10c is a schematic three-dimensional structural view of the outer support. The self-locking mechanism further comprises an outer support 13, the outer support 13 is sleeved on the outer sides of the clamping hook I10 and the clamping hook II11, the outer support 13 has a hollow structure, and preferably, the outer support 13 has a hollow structure formed by welding two pairs of parallel plates.
According to the preferred embodiment of the present invention, two opposite surfaces of the outer support 13 are provided with through holes, and specifically, the shaft V16 passes through the through holes of the elbow I102 and the elbow II112 and the through holes of the outer support 13 to realize connection, and the through holes of the elbow I102 and the elbow II103 are located between the two through holes of the outer support 13.
According to the utility model discloses, the width or the length of outer support 13 are greater than 1 lower part aperture of hole for hoist and are less than the aperture on 1 upper portion of hole for make outer support 13 can not get into 1 lower part of hole for hoist and can support on 1 upper portion of hole for hoist, when outer support 13 supports on hole for hoist upper portion, can make self-locking mechanism be in free state, thereby be convenient for part or tighten up gib head I and gib head II.
According to the utility model discloses, the bottom of outer support 13 is greater than the degree of depth in the hole of hoisting hole lower part with the distance of gib head I or gib head II bottom to can make gib head I or gib head II can block the outer edge of hole of hoisting hole bottom, realize the handling to internals.
According to a preferred embodiment of the present invention, as shown in fig. 14, fig. 14a is a schematic front view of the retainer ring, and fig. 14b is a schematic sectional view taken along line a-a in fig. 14 a.
According to a preferred embodiment of the invention, a retaining ring 19 is also provided on the shaft V for fixing the shaft V16.
According to the utility model, the hook head I103 of the clip I10 is opposite to the hook head II113 of the clip II11, and the elbow I102 of the clip I10 is opposite to the elbow bending direction of the clip II 111.
The utility model discloses in, when top I101 and top II111 are close to, gib head I103 and gib head II113 are kept away from, and when top I101 was kept away from with top II111, gib head I103 and gib head II113 were close to.
According to the present invention, fig. 12 is a schematic structural view of the lock plate, wherein fig. 12a is a schematic front structural view of the lock plate, and fig. 12b is a sectional view taken along a line a-a in fig. 12 a.
According to the utility model discloses, still be connected with jam plate 12 on axle III, jam plate 12 can be rotatory around axle III, is equipped with the draw-in groove on this jam plate 12, and the width of draw-in groove is greater than axle IV's diameter, and preferably, the difference between the width of draw-in groove and axle IV's diameter is 2 ~ 8mm, preferably 5 mm.
According to the utility model, under the action of gravity, the distance between the top I101 and the top II111 of the self-locking mechanism is reduced, the distance between the hook head I103 and the hook head II113 is increased, and the distance between the hook head I103 and the two ends of the hook head II113 is larger than the aperture of the hoisting hole 1; when the locking plate 12 locks the shaft IV, the distance between the top I101 and the top II111 increases, the distance between the hook head I103 and the hook head II113 decreases, the clip hook I10 can enter the hollow groove of the clip hook II11, and the distance between the hook head I103 and the two ends of the hook head II113 is smaller than the aperture of the hoisting hole 1.
According to the utility model, the clamp hook I is also provided with an adjusting cushion block 18, the adjusting cushion block 18 is positioned at the top I, when the bottom of the outer support 13 is propped against the upper part of the hoisting hole 1, the hanging beam pull rod is continuously moved downwards, the connecting rod II8 and the clamp hook I10 rotate around the shaft III, and when the connecting rod II8 rotates to the adjusting cushion block 18; in the draw-in groove of jam plate 12 can block into axle IV, and jam plate 12 level, adjustment cushion 18 can make double-layered hook I10 and double-layered hook II11 obtain suitable contained angle, ensures that the distance shortens or even reaches the shortest between gib head I103 and the gib head II113 lower extreme, and the two gib heads of being convenient for pass through internals hoisting hole, also can be convenient for block axle IV with jam plate 12 simultaneously.
In the utility model, when the locking plate 12 is out of the shaft IV, the hanger is in a free state, the top I101 and the top II111 are close to each other under the action of gravity of the self-locking mechanism, the distance between the hook head I103 and the hook head II113 is increased, the hook head I103 and the hook head II113 hook the outer edge of the bottom end of the hoisting hole respectively, and the internal part is hoisted by moving the hook head of the crane; through supporting outer support 13 on hole for hoist 1, the hoist moves down, make the distance increase between top I101 and the top II111, when increasing to connecting rod II and adjustment cushion contact, clamp the draw-in groove of jam plate 12 to epaxial IV, the relative position of axle IV and axle III is fixed this moment, for ground, the jam plate is in horizontal position, the jam plate struts self-locking mechanism, specifically, the jam plate struts top I and top II, top I and top II's distance increase, gib head I and gib head II's distance diminishes this moment, be less than the aperture of hole for hoist, thereby make gib head I and gib head II break away from the hole for hoist.
Adopt the high temperature gas cooled reactor steam generator internals hoist method of hoisting to internals include following step:
step 2, connecting the annular hanging beam with a crane hook head, and clamping the shaft IV by the locking plate 12 to enable the clamping hook I10 and the clamping hook II11 to be in a tightened state;
and 4, hoisting the internal part into the steam generator cylinder by the hoisting tool, after the internal part is assembled, clamping the shaft IV by the locking plate 12, tightening the hook head I103 and the hook head II113, lifting the hoisting tool to separate from the internal part, and completing hoisting.
According to the utility model discloses, in step 1, connect gradually annular hanging beam, hanging beam pull rod 5 and self-locking mechanism, the hanging beam through-hole 4 of annular hanging beam is passed to the upper end with hanging beam pull rod 5, through the trapezoidal round threaded connection of two nuts and hanging beam pull rod 5 upper end, realize being connected of hanging beam pull rod 5 and annular hanging beam, guarantee that every hanging beam pull rod 5's length is unanimous to guarantee that internals is the horizontality when carrying out internals hoist and mount, the axis and the perpendicular to ground of internals promptly.
According to the utility model discloses, in step 1, the pin shaft hole 6 of the bottom of hanging beam pull rod 5 is connected through axle I14 with the through-hole of connecting rod I7 on the self-locking mechanism to realize hanging beam pull rod 5 and self-locking mechanism's being connected. The hanging beam pull rods 5 are correspondingly connected with the self-locking mechanisms one by one.
According to the utility model discloses, it is fixed to adopt axle cardboard 12 at axle I14's end, guarantees that hanging beam pull rod 5 and self-locking mechanism do not drop and rotate in a flexible way.
According to the utility model discloses, after preparing or assembling the completion hoist, in step 2, be connected annular hanging beam and driving gib head, the rising or the decline of driving gib head drive annular hanging beam and remove from top to bottom to realize the accurate hoist and mount of internals.
According to the utility model discloses, in step 3, the driving gib head wholly hoists the hoist, locking plate 12 blocks axle IV this moment, top I101 and top II 111's rigidity, gib head I103 and gib head II 113's distance reduces, this distance is less than hole for hoist hole 1's aperture, thereby gib head I103 and gib head II113 of self-locking mechanism lower extreme can stretch into in the hole for hoist 1 that internals correspond, open locking plate 12, make locking plate 12 take off axle IV, 13 blocks in the 1 outside of hole for hoist, make self-locking mechanism be in free state, gib head I103 and gib head II113 block on the outer edge of hole for hoist 1 lower extreme, the driving gib head rises internals and is hoisted.
According to the utility model discloses, in step 4, the driving gib head drives the hoist and when accomplishing the assembly with steam generator internals handling to the steam generator barrel in, when blocking the jam plate 12 axle IV, top I101 and top II111 are strutted, the jam plate 12 is in horizontal position, gib head I103 and gib head II113 that make are in the state of tightening up, distance between the two reduces, be less than the aperture of lifting hole 1, the driving gib head raises the hoist, self-locking mechanism breaks away from with lifting hole 1, thereby the hoist breaks away from with internals, accomplish internals hoist and mount.
The high temperature gas cooled reactor steam generator internal part lifting appliance provided by the utility model is designed with a self-locking mechanism, when the lifting appliance is in a free state, the distance between the hook head I and the hook head II is increased due to the action of gravity, and the lifting hole of the internal part is blocked to realize the lifting of the internal part; the lifting appliance is provided with the locking plate, when the lifting appliance continues to move downwards, the outer support is clamped on the upper edge of the lifting hole, so that the shaft IV can be easily clamped by the locking plate, the clamping hook I and the clamping hook II are in a tightened state, and the lifting appliance can be separated from the inner part; the connection between the hanging beam pull rod and the self-locking mechanism of the lifting appliance provided by the utility model is a movable connection, the height of the hanging beam pull rod is adjustable, the tightening and spreading states of the clamp hook I and the clamp hook II on the self-locking mechanism are controllable, the realization is easy, and the rotation of the lifting appliance is flexible and free; the utility model provides a hoist simple structure, reasonable in design use reliably, and factor of safety is high, and it is convenient to dismantle, adopts the utility model provides a hoist carries out the hoist and mount of internals, and the method is simple controllable, can realize carrying out the hoist and mount of internals under the narrow and small condition in steam generator tube space, and hoist and mount efficiency is high, can realize accurate hoist and mount.
Examples
Example 1
A lifting appliance for internal parts of a high-temperature gas cooled reactor steam generator is characterized in that the internal parts are of hollow disc structures, the cone angle of each cone surface structure is 40 degrees, the outer diameter of each internal part is 3887mm, the inner diameter of the upper end of each internal part is 2948mm, the inner diameter of the lower end of each internal part is 3152mm, 7 lifting holes are respectively distributed in the internal parts on two sides of a connecting pipe direction at equal intervals, the included angle between the centers of two adjacent lifting holes and the connecting line of the centers of the internal parts is 19 degrees on the same side of the connecting pipe direction, and the height. The aperture of the upper part of the hoisting hole is 250mm, and the aperture of the lower part of the hoisting hole is 233 mm.
The upper section of the annular hanging beam is provided with a reinforcing rib plate, 8 hanging beam through holes are arranged on the annular hanging beam, every two through holes form a group, and the included angle between the center of each group of the two through holes and the connecting line of the center of the annular hanging beam is 19 degrees. The length of the trapezoidal round thread is 500mm, and the thickness of the nut is 60 mm.
Example 2
And (3) hoisting the internal part by using the internal part hoisting tool of the high-temperature gas cooled reactor steam generator in the embodiment 1.
Connecting the travelling crane hook head with the annular hanging beam, so that the travelling crane hook head can lift the hanger, inserting a locking plate of the self-locking mechanism into the shaft IV, enabling the locking plate to be in a horizontal position, enabling the top I and the top II to be propped open, reducing the distance between the hook head I and the hook head II, and enabling the hook head I and the hook head II to be in a tightened state;
after the crane hook integrally lifts the lifting appliance, the hook head I and the hook head II of the self-locking mechanism extend into the lifting hole, when the crane hook falls to the outer support and abuts against the upper part of the lifting hole, the hook head I and the hook head II are lower than the bottom end of the lifting hole at the moment, the locking plate is separated from the shaft IV, the self-locking mechanism is in a free state, under the action of gravity, the distance between the hook head I and the hook head II is increased, the hook head I and the hook head II are clamped on the outer edge of the bottom end of the lifting hole, the crane hook head is lifted, and the lifting appliance lifts the internal part;
when the internal part is lifted to the inside of the steam generator barrel to be assembled, the locking plate is clamped with the shaft IV again, the top I of the clamping hook I and the top II of the clamping hook II are propped open, the locking plate is in a horizontal position, the hook head I and the hook head II are in a tightening state, the distance between the locking plate and the hook head II is smaller than the inner diameter of the hoisting hole, the crane hook head raises the lifting appliance, the lifting appliance is separated from the internal part, and the lifting of the internal part is completed.
The present invention has been described in detail with reference to the preferred embodiments and the exemplary embodiments. It should be noted, however, that these specific embodiments are only illustrative explanations of the present invention, and do not set any limit to the scope of the present invention. Without departing from the spirit and scope of the present invention, various modifications, equivalent replacements, or modifications may be made to the technical content and embodiments thereof, which all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.
Claims (10)
1. A lifting appliance for internal parts of a steam generator of a high-temperature gas cooled reactor is characterized by comprising an annular lifting beam, a lifting beam pull rod and a self-locking mechanism which are sequentially connected,
the self-locking mechanism comprises a connecting rod I, a connecting rod II and a connecting rod III which are connected with the connecting rod I, the connecting rod II is connected with the clamping hook I, the connecting rod III is connected with the clamping hook II, the clamping hook I is connected with the clamping hook II,
the clip hook I comprises a top I, an elbow I and a hook head I, the clip hook II comprises a top II, an elbow II and a hook head II,
the top I is provided with a through hole, the connecting rod II is movably connected with the top I through a shaft III, the top II is provided with a through hole, the connecting rod III is movably connected with the top II through a shaft IV, the elbow I is connected with the elbow II through a shaft V,
the shaft III is further connected with a locking plate, a clamping groove is formed in the locking plate, and the width of the clamping groove is larger than the diameter of the shaft IV.
2. The lifting appliance according to claim 1, wherein the annular lifting beam is provided with a lifting beam through hole, the top end of the lifting beam pull rod penetrates through the lifting beam through hole to be connected with the annular lifting beam, the bottom end of the lifting beam pull rod is movably connected with the self-locking mechanism, and the circumference of the internal member is provided with a lifting hole for lifting.
3. The sling according to claim 1, wherein the bottom end of the suspension beam pull rod is provided with a through hole, two ends of each connecting rod I are provided with one through hole, two connecting rods I are respectively arranged at two sides of the through hole at the bottom end of the suspension beam pull rod, and the connecting rods I are connected with the suspension beam pull rod through shafts I.
4. The lifting appliance according to claim 3, wherein the connecting rods II and III are provided with through holes, and the connecting rods II and III are located between the two connecting rods I and connected with the connecting rods I through shafts II.
5. The spreader according to claim 1, wherein the elbow I is bent in a direction opposite to the elbow II, and the hook head I is bent in a direction opposite to the hook head II.
6. The lifting appliance according to claim 1, wherein when the clamping groove of the locking plate clamps the shaft IV, the distance between the hook head I and the hook head II is smaller than the aperture of the hoisting hole of the internal part, and when the clamping groove of the locking plate is separated from the shaft IV and the lifting appliance is in a vertical state, the distance between the hook head I and the hook head II is larger than the aperture of the hoisting hole of the internal part.
7. The spreader according to claim 6, wherein the self-locking mechanism further comprises an outer support sleeved outside the clamp hooks I and II.
8. The lifting appliance according to claim 7, wherein the opposite surfaces of the outer support are respectively provided with a through hole, the through holes of the outer support are connected with the elbow I and the elbow II through a shaft V, and the length or the width of the outer support is larger than the aperture of the lower part of the lifting hole.
9. The spreader according to claim 8, wherein the clip II comprises a hollow slot, and the gripping surfaces of the hook head I and the hook head II are perpendicular to the lifting hole axis when the clip I can enter the hollow slot.
10. The lifting appliance according to claim 3, wherein a groove is arranged on the shaft I, a shaft clamping plate is arranged in the groove and connected with the connecting rod I, and a retaining ring is sleeved on the shaft V and positioned outside the outer support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921422335.7U CN210594906U (en) | 2019-08-29 | 2019-08-29 | Internal part lifting appliance of high-temperature gas cooled reactor steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921422335.7U CN210594906U (en) | 2019-08-29 | 2019-08-29 | Internal part lifting appliance of high-temperature gas cooled reactor steam generator |
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| Publication Number | Publication Date |
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| CN210594906U true CN210594906U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111994781A (en) * | 2020-09-11 | 2020-11-27 | 中国水利水电第十二工程局有限公司 | Hollow block lifting hook |
-
2019
- 2019-08-29 CN CN201921422335.7U patent/CN210594906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111994781A (en) * | 2020-09-11 | 2020-11-27 | 中国水利水电第十二工程局有限公司 | Hollow block lifting hook |
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