CN108320824B - Large-scale container internal reheater introducing device - Google Patents
Large-scale container internal reheater introducing device Download PDFInfo
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- CN108320824B CN108320824B CN201810287884.1A CN201810287884A CN108320824B CN 108320824 B CN108320824 B CN 108320824B CN 201810287884 A CN201810287884 A CN 201810287884A CN 108320824 B CN108320824 B CN 108320824B
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- reheater
- introducing
- bracket
- fixed pulley
- lead
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a large-scale container internal reheater introducing device, which comprises a positioning ring (6) fixed on the outer wall of a container shell (1), wherein fixed pulley blocks are symmetrically arranged on the outer periphery of the positioning ring in the radial direction; the reheater introducing bracket is fixedly connected with the reheater, and then the introducing rope (9) pulls the reheater introducing bracket, and the reheater is horizontally introduced into the shell (1) through vertical traction of the hanging beam (10) and guiding action of the fixed pulley in the fixed pulley block. The device is novel and simple in structure, vertical pulling force of crane hoisting can be converted into horizontal introducing force through the fixed pulley, and operation of introducing multiple groups of reheaters into the large container can be easily and efficiently completed.
Description
Technical Field
The invention relates to a large-scale container internal reheater introducing device, in particular to an introducing auxiliary device of a nuclear power steam-water separation reheater.
Background
The steam-water separation reheater (MSR) is key equipment in a nuclear power conventional island system, a shell of the steam-water separation reheater is internally provided with two primary reheaters and two secondary reheaters, and the reheater is a key component in an MSR product. The weight of the primary reheater and the secondary reheater is about 20 tons, the length is not less than 10m, and the length of the tube bundle part is more 10-15m.
In actual production, the tube bundles are very easy to bend and even damage in the process of lifting and introducing the shell because the lengths of the primary reheater and the secondary reheater are too long; secondly, when the reheater is horizontally lifted to a reheater track in the shell by means of the crown block, the reheater slides to an installation position on the track, the contact area of the reheater and the track is increased along with slow introduction of the reheater, the friction force is gradually increased, and the reheater can be conveyed to the installation position only by means of the horizontal conveying force of the crown block, so that the reheater is difficult to realize.
In addition, for the primary reheater, the primary reheater is connected to an end plate inside the MSR housing, the end plate having a distance of not less than 1m from the housing end. When the crown block is used for introducing the primary reheater, the crown block can only be introduced to the position where the end socket of the primary reheater is flush with the end part of the shell, and the distance of more than 1m is not introduced.
Therefore, the steam-water separation reheater has the advantages of large weight, long length, high introduction precision during installation, severe introduction conditions and urgent installation difficulty of the steam-water separation reheater.
For the reasons, the inventor reforms the prior art, and researches and analyzes and researches the structure and the introduction process of the steam-water separation reheater to find an introduction auxiliary device which has a simple structure, is convenient to operate and can be accurately introduced into the reheater.
Disclosure of Invention
In order to overcome the problems, the inventor has conducted intensive studies and devised a large-scale container internal reheater introducing device and method, the introducing device guides an introducing rope through a positioning ring with a fixed pulley block fixed on the outer wall of a container shell, after a reheater introducing bracket is fixedly connected with a reheater, the introducing rope pulls the reheater introducing bracket, and the reheater is horizontally introduced into the shell through vertical pulling of a hanging beam and guiding action of a fixed pulley in the fixed pulley block. According to the device and the method, the vertical pulling force of the crane is converted into the horizontal introducing force through the fixed pulley, so that the operation of introducing a plurality of groups of reheaters into the large container can be easily and efficiently completed.
In particular, it is an object of the present invention to provide the following two aspects:
in a first aspect, the present invention provides a large vessel internal reheater induction apparatus comprising:
the positioning ring is fixed on the outer wall of the container shell, and fixed pulley blocks are radially and symmetrically arranged on the periphery of the positioning ring;
the reheater introducing bracket is fixedly connected with the reheater, and then is introduced into the rope traction reheater introducing bracket, and the reheater is horizontally introduced into the shell through vertical traction of the hanging beam and guiding action of the fixed pulley in the fixed pulley block.
In a second aspect, the present invention provides a method of introducing a reheater into the interior of a large vessel, the method comprising the steps of:
step 1: the shell is taken as a fulcrum, and a positioning ring of the fixed pulley block is fixedly connected at the center of the outer side of the shell;
step 2: one end of the shell is fixedly connected with the reheater, and the reheater is horizontally lifted onto the reheater track; the introducing rope connects the introducing bracket of the reheater with the hanging beam through the fixed pulley block, slowly lifts the reheater, introduces the reheater to the installation position, and completes the installation of the reheater;
step 3: the reheater on the other side is installed in the same step at the other end of the casing.
The invention has the beneficial effects that:
(1) The device for introducing the reheaters in the large container has novel and simple structure, converts the vertical pulling force of the crane into the horizontal introducing force through the fixed pulley, and can easily and efficiently finish the operation of introducing a plurality of groups of reheaters into the large container;
(2) The large-scale container internal reheater introducing device provided by the invention has high strength, is light and convenient, can be folded, and is convenient to store and reuse;
(3) The large-scale container internal reheater introducing device provided by the invention takes the container shell as the fulcrum, and can mount reheaters from two ends of the shell in sequence, so that the position of the mounting fulcrum does not need to be readjusted, and the mounting process is time-saving and labor-saving.
Drawings
FIG. 1 illustrates a schematic view of the installation location of a steam-water separator reheater according to a preferred embodiment of the present invention;
FIG. 2 shows a schematic drawing of the introduction of a primary reheater into a vessel, according to a preferred embodiment of the present invention;
FIG. 3 shows a schematic drawing of a two-stage reheater introduced into a vessel, according to a preferred embodiment of the present invention;
FIG. 4A illustrates the A-view of FIG. 2, and B illustrates the A-view of FIG. 3;
FIG. 5 shows a schematic view of a retainer ring structure in accordance with a preferred embodiment of the present invention;
FIG. 6 shows a top view of the retainer ring of FIG. 5;
FIG. 7 illustrates a schematic view of a stage reheater lead-in bracket structure in accordance with a preferred embodiment of the present invention;
FIG. 8 is a schematic view showing the construction of a connection frame in a stage reheater lead-in rack according to a preferred embodiment of the present invention;
FIG. 9 shows an A-direction view of the connection frame of FIG. 7;
FIG. 10 illustrates a schematic view of a horizontal lead-in rod in a primary reheater lead-in bracket, in accordance with a preferred embodiment of the present invention;
fig. 11 shows a schematic structural view of a secondary reheater induction stand according to a preferred embodiment of the present invention.
Reference numerals illustrate:
1-shell
2-end plate
3-end socket
4-primary reheater
5-two stage reheater
6-positioning ring
6-1-upper fixed pulley block
6-2-fastener
6-3-lower fixed pulley block
6-4-rib plate
6-5-outer arc plate
6-6-inner arc plate
6-7-connecting plate
7-primary reheater lead-in bracket
7-1-horizontal lead-in rod
7-1-1-lead-in lifting lug
7-1-2-support rod connecting lifting lug I
7-1-3-introducer rod
7-1-4-frame connection lifting lug
7-2-support rod
7-3-connection frame
7-3-1-lead-in connection plate
7-3-2-connecting plate
7-3-3-support rod connecting lifting lug II
7-3-4-Panel
8-two-stage reheater lead-in bracket
8-1-fixing plate
8-2-horizontal lead-in beam
9-lead-in rope
10-hanging beam
11-reheater track
12-Shell Pre-weld
Detailed Description
The invention is illustrated in further detail below by means of the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present invention may be combined with each other as long as they do not collide with each other.
The invention provides a large-scale container internal reheater introducing device which is particularly suitable for auxiliary introduction of a nuclear power steam-water separation reheater.
The length of the shell 1 of the steam-water separation reheater in nuclear power is generally not less than 30 meters, the diameter of the shell is more than 4 meters, and the reheater in a slender shape is installed in the shell. The reheater generally includes a header, a tube sheet, and a tube bundle, and is installed inside the shell 1 in the extending direction of the shell 1. According to different actual demands, a plurality of groups of reheaters with different installation positions can be arranged in the shell 1.
Preferably, as shown in fig. 1, a secondary reheater 5 is disposed on the upper side inside the casing 1, and the seal head of the secondary reheater 5 is disposed outside the casing 1, that is, outside the seal head 3 of the casing 1; a primary reheater 4 is further provided below the secondary reheater 5, and the primary reheater 4 is mounted inside the casing 1 and connected to the end plate 2 inside the casing 1. The end plate 2 and the end part on the same side of the shell 1 are provided with a set distance C, and the distance C is not less than 1 meter.
A plurality of primary reheaters 4 and secondary reheaters 5 may be provided on the same side of the casing 1 as required, and more preferably, the primary reheaters 4 and the secondary reheaters 5 are provided on both sides of the casing 1 along the extending direction of the casing 1.
Because the installation positions and the installation depths of the primary reheater 4 and the secondary reheater 5 in the shell 1 are different, the invention is creatively provided with two introduction parts so as to meet different installation requirements.
According to the present invention, there is provided a large vessel internal reheater introduction apparatus comprising a reheater introduction bracket, a retainer ring 6, an introduction rope 9, and a hanging beam 10.
Wherein, the positioning ring 6 is fixed on the outer wall of the container shell 1, and fixed pulley blocks are symmetrically arranged on the outer periphery of the positioning ring in the radial direction; after the reheater introducing bracket is fixedly connected with the reheater, the introducing rope 9 pulls the reheater introducing bracket, and the reheater is horizontally introduced into the shell 1 through the vertical traction of the hanging beam 10 and the guiding function of the fixed pulley in the fixed pulley block.
In the invention, the introducing rope 9 is a steel wire rope for hoisting; the hanging beam 10 is a supporting beam, the upper end of the supporting beam is provided with a crane lifting point, the lower end of the supporting beam is provided with a lifting point with adjustable distance, the leading-in rope 9 is connected with the lifting point at the lower end, and an object at the lower end of the leading-in rope 9 is lifted and moved through the crane.
Preferably, the positioning ring 6 is a ring-shaped member which is arranged in a split manner, and is connected to the outer wall of the shell 1 in a buckling manner.
The positioning ring 6 can be fixed on any side or the middle part of the shell 1 as required, preferably the positioning ring 6 is fixed at the center of the shell 1, so that reheaters are conveniently and sequentially installed from two ends of the shell 1, the positions of the hanging beam 10 and the positioning ring 6 or the shell 1 do not need to be moved, and time and labor are saved when the reheaters are installed.
Preferably, as shown in fig. 5, the positioning ring 6 is a two semicircular ring-shaped member, and the two semicircular rings are detachably and fixedly connected through the fastening component 6-2. The fastening member 6-2 may be any type of connection known in the art, such as a screw-nut connection.
More preferably, as shown in fig. 6, connecting plates 6-7 are arranged at two sides of the semicircular end part of the positioning ring 6 along the extending direction of the shell 1, bolt holes are arranged on the connecting plates 6-7, and bolts and nuts are fixed on the connecting plates 6-7, so that the positioning ring 6 is connected and fixed.
Since the weight of the casing 1 is large, when the reheater is installed using the positioning ring 6, abrasion may occur to the outer wall of the casing 1 due to friction force, and the positioning ring 6 may be moved. Thus, preferably, a housing preform 12 is provided on the outer wall of the housing 1 at the connection to the retainer ring 6, as shown in fig. 2 and 3. The positioning ring 6 is attached to or fixedly connected with the shell pre-welded piece 12, so that the abrasion of the positioning ring 6 to the shell 1 can be avoided, and the positioning ring 6 can be fixed so as not to displace in the installation process.
The retainer ring 6 is formed by bending and shaping steel plates, and in a preferred embodiment, the retainer ring 6 is formed by welding multiple layers of bent steel plates. For example, as shown in fig. 5, the positioning ring 6 comprises an inner arc plate 6-6, a rib plate 6-4 and an outer arc plate 6-5 from inside to outside. The positioning ring 6 made of multiple layers of welding can reduce the technological difficulty of bending and shaping the steel plate. On the basis that the preparation process can meet the requirements, the positioning ring 6 can also be prepared from a steel plate or other metal plates with single-layer thickness and strength meeting the requirements.
Further, a fixed pulley for guiding the lead-in rope 9 is arranged on the outer wall of the positioning ring 6; more preferably, the fixed pulleys are symmetrically arranged along the radial direction of the outer wall of the positioning ring 6.
In a preferred embodiment, for example, in fig. 5, two groups of fixed pulley blocks are radially symmetrically arranged on the outer walls of the positioning ring 6 at different heights in the vertical direction, wherein the upper fixed pulley block 6-1 is positioned on the outer wall of the upper semicircular ring, and the lower fixed pulley block 6-3 is positioned on the outer wall of the lower semicircular ring.
More preferably, the center distance (as in fig. 5B) between the two fixed pulleys in the upper fixed pulley block 6-1 is smaller than the center distance (as in fig. 5 a) between the two fixed pulleys in the lower fixed pulley block 6-3.
Further, in the upper fixed pulley block 6-1 and the lower fixed pulley block 6-3, the pulley axial direction is perpendicular to the extending direction of the housing 1. Thus, when the lead-in rope 9 is guided and pulled by the pulley, the lead-in rope 9 is parallel to the extending direction of the housing 1.
More preferably, in the upper fixed pulley block 6-1 and the lower fixed pulley block 6-3, a hole for receiving the lead-in rope 9 therethrough is also provided in the partition above the pulleys, preferably through which the lead-in rope 9 passes vertically after guiding by the pulleys. The holes guide and limit the lead-in ropes 9 by 90 degrees, so that the lead-in ropes are vertically connected with the hanging beam 10, and the traction force of the hanging beam 10 is not reduced.
The reheater introducing support comprises a first-stage reheater introducing support 7 connected with the end socket of the first-stage reheater 4 and a second-stage reheater introducing support 8 connected with the end socket of the second-stage reheater 5. After the lead-in bracket is fixedly connected with the reheater, the reheater is horizontally lifted and stably conveyed to a reheater track 11 in the shell 1; and then the reheater is led to the installation position in the shell 1 by the traction force of the lead-in rope 9.
Further, as shown in fig. 7, the primary reheater inlet bracket 7 includes two horizontal inlet rods 7-1, two support rods 7-2 and a connection frame 7-3, and forms a triangle structure with strong bearing performance. Wherein, as shown in fig. 2, the connection frame 7-3 is detachably connected with the plug end of the primary reheater 4.
The connecting frame 7-3, as shown in FIG. 8, comprises two panels 7-3-4 with the same shape, a connecting plate 7-3-2 fixedly connected between the panels 7-3-4, a connecting plate 7-3-1 fixedly connected to one end of the panel 7-3-4 far away from the end socket of the primary reheater 4, and a supporting rod connecting lifting lug two 7-3-3 fixedly connected to the middle part of the outer side of the panel 7-3-4.
Preferably, the connecting frame 7-3 is formed by welding a connecting plate 7-3-1 of a leading-in rod, a plurality of groups of connecting plates 7-3-2, two connecting lifting lugs 7-3-3 of two supporting rods and two panels 7-3-4; more preferably, each part is made of a steel plate having a thickness of 20mm to 50mm.
As shown in fig. 9, a notch adapted to the seal head of the primary reheater 4 is provided in the panel 7-3-4, and the seal head of the primary reheater 4 is accommodated in the notch and detachably connected with the panel 7-3-4. Screw holes are preferably formed in the upper end and the lower end of the notch of the panel 7-3-4 and are fixedly connected with the fixing holes of the seal end of the primary reheater 4 through bolts and nuts.
The connecting frame 7-3 has the advantages of simple structure, light weight, high strength, convenient connection with the primary reheater 4 and reusability.
As shown in fig. 10, the horizontal introducing rod 7-1 includes introducing lifting lugs 7-1-1 and frame connecting lifting lugs 7-1-4 respectively disposed at two ends of the introducing rod 7-1-3, and a supporting rod connecting lifting lug 7-1-2 disposed on the introducing rod 7-1-3 and close to the introducing lifting lug 7-1-1.
Preferably, the lead-in lug 7-1-1, the frame connection lug 7-1-4 and the support rod connection lug 7-1-2 are fixedly connected, for example welded, to the lead-in rod 7-1-3. For ease of recognition, it may be provided that the screw holes introduced into the lifting lugs 7-1-1 are larger than the screw holes in the frame attachment lifting lugs 7-1-4.
More preferably, the introduction rod 7-1-3 is made of a steel pipe, for example, of the specification ofThe leading-in lifting lug 7-1-1, the frame connecting lifting lug 7-1-4 and the supporting rod connecting lifting lug 7-1-2 are made of steel plates, and the thickness of the steel plates is 20 mm-50 mm.
Wherein the frame connection lugs 7-1-4 are connected, preferably detachably connected, to the lead-in bar connection lugs 7-3-1, for example by means of bolts and nuts.
Thus, for the primary reheater lead-in bracket 7, as shown in fig. 7, two detachably connected horizontal lead-in bars 7-1 are symmetrically provided at both sides of the lead-in bar connection plate 7-3-1. Through bracing piece 7-2, its both ends are connected, preferably detachable connection with bracing piece connection lug one 7-1-2 and bracing piece connection lug two 7-3-3 respectively to form two triangle-shaped structures that bearing capacity is strong in first-stage reheat ware introduction support 7, thereby improved the intensity of first-stage reheat ware introduction support 7.
The support rod 7-2 is preferably formed by the specificationThe weight of the primary reheater introduction bracket 7 can be further reduced.
The detachably connected primary reheater lead-in bracket 7 is convenient to install, detach and store, so that the length of each part is reduced, and the storage space is saved; more importantly, when the primary reheater 4 is installed by using the primary reheater introduction bracket 7, the tension of the horizontal introduction rod 7-1 is reduced by deformation generated by the horizontal introduction rod 7-1, the support rod 7-2 and the connecting frame 7-3, and the deformation of the horizontal introduction rod 7-1 is reduced or eliminated, so that the service time of the primary reheater introduction bracket 7 is prolonged.
After the primary reheater introducing bracket 7 is fixedly connected with the primary reheater 4, the primary reheater 4 is horizontally lifted, and when the primary reheater is stably conveyed into the reheater track 11 in the shell 1, the height of the horizontal introducing rod 7-1 is the same as that of the lower fixed pulley block 6-3.
As shown in fig. 2, the primary reheater introduction bracket 7 is connected with the hanging beam 10 by the introduction rope 9 through the lower fixed pulley block 6-3 in the positioning ring 6, the crown block is slowly lifted, the primary reheater 4 is introduced to the installation position, and the installation of the primary reheater 4 is completed. The steam-water separator reheater, i.e. the head 3 of the housing 1, is then installed.
Preferably, as shown in the A diagram of FIG. 4, the center distance of the two fixed pulleys in the lower fixed pulley block 6-3 is equal to the hole distance between the two leading-in lifting lugs 7-1-1 in the primary reheater leading-in bracket 7. In this way, the two leading-in ropes 9 are kept parallel in the process of pulling the primary reheater 4, so that the stress on the two sides of the primary reheater leading-in bracket 7 is balanced, the primary reheater 4 is balanced in stress, and the primary reheater is accurately moved along the direction of the reheater track without deviation.
Since the primary reheater 4 is connected to the end plate 2 inside the casing 1, and the distance C between the end plate 2 and the end on the same side as the casing 1 is not less than 1 meter, the primary reheater 4 can be introduced into the casing 1 when the distance from the introduction lifting lug 7-1-1 in the primary reheater introduction bracket 7 to the fixing hole of the primary reheater 4, i.e., L in fig. 7, is not less than C.
Preferably, the distance from the leading-in lifting lug 7-1-1 of the primary reheater leading bracket 7 to the fixing hole of the primary reheater 4 is larger than the distance from the end to the end plate 2, more preferably, the distance is 10 cm to 30cm, so that the primary reheater 4 can be fully led into the shell 1 through the primary reheater leading bracket 7 by the leading-in rope 9.
Further, the secondary reheater lead-in bracket 8 comprises a fixed plate 8-1 and a horizontal lead-in beam 8-2; as shown in fig. 11, the fixing plate 8-1 is disposed at the middle part of the horizontal introducing beam 8-2, and is provided with a screw hole, and is detachably connected with the end socket of the secondary reheater 5 through the fixing plate 8-1.
The secondary reheater 5 is connected with the end socket 3 of the shell 1, and the end socket of the secondary reheater 5 is positioned on the outer side of the shell 1, so that the secondary reheater 5 can be led into the installation position through horizontal traction of the secondary reheater leading-in bracket 8.
Preferably, lifting lugs are provided at both ends of the horizontal introduction beam 8-2 for hooking the introduction rope 9.
The fixing plate 8-1 is made of a steel plate, and the thickness of the fixing plate is preferably 30 mm-50 mm; more preferably, the horizontal lead-in beam 8-2 is made of channel steel having a specification of 20# to 30 #. The thick secondary reheater lead-in bracket 8 is light in weight and has good strength.
As shown in fig. 3, after the secondary reheater introducing bracket 8 is connected with the secondary reheater 5, the secondary reheater 5 is lifted horizontally, and when the secondary reheater is stably introduced into the reheater track 11 in the shell 1, the height of the horizontal introducing beam 8-2 is the same as that of the upper fixed pulley block 6-1;
preferably, as shown in the diagram B of fig. 4, the center distance of the two fixed pulleys in the upper fixed pulley block 6-1 is equal to the hole-to-hole distance of the connecting hole of the horizontal lead-in beam 8-2 in the secondary reheater lead-in bracket 8. In this way, the two lead-in ropes 9 are kept parallel in the process of pulling the secondary reheater 5, so that the stress on the two sides of the secondary reheater 5 is balanced, and the two lead-in ropes move along the reheater track, and the direction is accurate and not deviated.
By the primary reheater introduction bracket 7 and the secondary reheater introduction bracket 8, the primary reheater 4 and the secondary reheater 5 can be accurately introduced into the casing 1 in parallel to the extending direction of the casing 1 and introduced to the installation position.
The invention also provides a method of introducing a reheater into the interior of a large vessel, the method comprising the steps of:
step 1: the shell 1 is taken as a fulcrum, and a positioning ring 6 of a fixed pulley block is fixedly connected with the center of the outer side of the shell 1.
Preferably, the positioning ring 6 is buckled at the center of the outer wall of the shell 1, and is tightly attached or welded and fixedly connected with the shell pre-welding piece 12, and the fastener 6-2 is screwed to fixedly connect the positioning ring 6 with the shell 1.
Step 2: at one end of the shell 1, a reheater introducing bracket is fixedly connected with the reheater, and the reheater is horizontally lifted onto a reheater track 11; the introducing rope 9 connects the reheater introducing bracket with the hanging beam 10 through the fixed pulley block, slowly lifts the reheater, introduces the reheater to the installation position, and completes the installation of the reheater.
As shown in fig. 1, 4 reheaters, two primary reheaters 4 and two secondary reheaters 5 are provided in the casing 1, and one end of the casing 1 is selected to be introduced into the reheaters.
The end socket of the primary reheater 4 is connected with a primary reheater introducing bracket 7, and the primary reheater 4 is horizontally lifted and stably conveyed to a reheater track 11 in the shell 1;
as shown in fig. 2, two lead-in ropes 9 are connected with a hanging beam 10 through a lower fixed pulley block 6-3 of a positioning ring 6, a primary reheater lead-in bracket 7 is slowly lifted, and the primary reheater 4 is led into an installation position to complete the installation of the primary reheater 4.
The head 3 of the steam-water separator reheater, i.e. the head 3 of the housing 1, is then installed.
The method comprises the steps of connecting a seal end of a secondary reheater 5 with a secondary reheater introducing bracket 8, horizontally hoisting the secondary reheater 5, and stably conveying the secondary reheater 5 to a reheater track 11 in a shell 1;
as shown in fig. 3, two lead-in ropes 9 are connected with a hanging beam 10 through an upper fixed pulley block 6-1 of a positioning ring 6, a secondary reheater lead-in bracket 8 is slowly lifted, and the secondary reheater 5 is led into an installation position to complete the installation of the secondary reheater 5.
Step 3: the reheater on the other side is installed in the same step at the other end of the casing 1.
The invention also provides a method for introducing the reheater into the large container, which takes the container shell as a fulcrum, and can mount the reheater from two ends of the shell in sequence without readjusting the position of the mounting fulcrum, so that the mounting process is time-saving and labor-saving.
The method for introducing the reheaters into the large container can convert the vertical pulling force of crane hoisting into the horizontal introducing force through the fixed pulleys, and can easily and efficiently finish the operation of introducing a plurality of groups of reheaters into the large container.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", etc. are directions or positional relationships based on the operation state of the present invention are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected in common; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the invention can be subjected to various substitutions and improvements, and all fall within the protection scope of the invention.
Claims (10)
1. A large vessel internal reheater lead-in apparatus, comprising:
the positioning ring (6) is fixed on the outer wall of the container shell (1), and fixed pulley blocks are radially and symmetrically arranged on the periphery of the positioning ring;
the reheater introducing bracket is fixedly connected with the reheater, and then is pulled by an introducing rope (9), and the reheater is horizontally introduced into the shell (1) through vertical traction of a hanging beam (10) and guiding action of a fixed pulley in a fixed pulley block;
the reheater introducing bracket comprises a first-stage reheater introducing bracket (7) connected with the end socket of the first-stage reheater (4) and a second-stage reheater introducing bracket (8) connected with the end socket of the second-stage reheater (5);
the primary reheater introducing bracket (7) comprises a connecting frame (7-3), a supporting rod (7-2) and a horizontal introducing rod (7-1) and is connected to form a triangular structure;
the connecting frame (7-3) is detachably connected with the end sealing end of the primary reheater (4);
the connecting frame (7-3) comprises two panels (7-3-4) with the same shape, a connecting plate (7-3-2) fixedly connected between the panels (7-3-4), an introducing rod connecting plate (7-3-1) fixedly connected to one end of the panel (7-3-4) far away from the end socket of the primary reheater (4) and a supporting rod connecting lifting lug II (7-3-3) fixedly connected to the middle part of the outer side of the panel (7-3-4); wherein, a gap matched with the end socket of the primary reheater (4) is arranged in the panel (7-3-4), and the end socket of the primary reheater (4) is accommodated in the gap and detachably connected with the panel (7-3-4);
the horizontal introducing rod (7-1) comprises introducing lifting lugs (7-1-1) and frame connecting lifting lugs (7-1-4) which are respectively arranged at two ends of the introducing rod (7-1-3), and a supporting rod connecting lifting lug I (7-1-2) which is arranged on the introducing rod (7-1-3) and is close to the introducing lifting lug (7-1-1); wherein, the frame connecting lifting lug (7-1-4) is connected with the leading-in rod connecting plate (7-3-1);
the two ends of the support rod (7-2) are respectively connected with the first support rod connecting lifting lug (7-1-2) and the second support rod connecting lifting lug (7-3-3);
the secondary reheater lead-in bracket (8) comprises a fixed plate (8-1) and a horizontal lead-in beam (8-2);
the fixing plate (8-1) is detachably connected with the sealing head of the secondary reheater (5).
2. The introduction device as recited in claim 1, characterized in that the retainer ring (6) is a two-semicircle, opposite-buckling, annular member;
the positioning ring (6) is attached to or fixedly connected with a shell pre-welded piece (12) on the surface of the shell (1).
3. The introducing device according to claim 2, wherein the outer wall of the upper semicircle is provided with a pair of upper fixed pulley blocks (6-1);
the outer wall of the lower semicircle is provided with a pair of lower fixed pulley blocks (6-3).
4. A lead-in device according to claim 3, characterized in that the pulley axial direction in the upper fixed pulley block (6-1) and the lower fixed pulley block (6-3) is perpendicular to the extending direction of the housing (1).
5. The lead-in device according to claim 1, characterized in that the distance from the lead-in lifting lug (7-1-1) in the primary reheater lead-in bracket (7) to the fixing hole of the primary reheater (4) is greater than the distance from the end to the end plate (2).
6. The introducing apparatus as claimed in claim 5, wherein the horizontal introducing rod (7-1) is the same as the lower fixed pulley block (6-3) in height when the primary reheater introducing bracket (7) is fixedly connected with the primary reheater (4) and then is fed into the reheater track (11) inside the casing (1).
7. The lead-in device according to claim 6, characterized in that the center distance of the two fixed pulleys in the lower fixed pulley block (6-3) is equal to the hole distance of the two lead-in lifting lugs (7-1-1) in the primary reheater lead-in bracket (7).
8. The introducing device according to claim 1, wherein the horizontal introducing beam (8-2) has the same height as the upper fixed pulley block (6-1) when the secondary reheater introducing bracket (8) is fixedly connected with the secondary reheater (5) and then introduced into the reheater track (11) inside the casing (1).
9. The lead-in device according to claim 8, characterized in that the center distance of the two fixed pulleys in the upper fixed pulley block (6-1) is equal to the hole-to-hole distance of the connecting hole of the horizontal lead-in beam (8-2) in the secondary reheater lead-in bracket (8).
10. A method of introducing a reheater into a large vessel interior using the large vessel interior reheater introduction apparatus of one of claims 1 to 9, the method comprising the steps of:
step 1: a positioning ring (6) of a fixed pulley block is fixedly connected at the center of the outer side of the shell (1) by taking the shell (1) as a fulcrum;
step 2: at one end of the shell (1), a reheater introducing bracket is fixedly connected with the reheater, and the reheater is horizontally lifted onto a reheater track (11); the introducing rope (9) connects the reheater introducing bracket with the hanging beam (10) through the fixed pulley block, slowly lifts the reheater, introduces the reheater to the installation position, and completes the installation of the reheater;
step 3: the reheater on the other side is installed on the other end of the shell (1) in the same step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287884.1A CN108320824B (en) | 2018-03-30 | 2018-03-30 | Large-scale container internal reheater introducing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287884.1A CN108320824B (en) | 2018-03-30 | 2018-03-30 | Large-scale container internal reheater introducing device |
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| CN108320824A CN108320824A (en) | 2018-07-24 |
| CN108320824B true CN108320824B (en) | 2023-08-25 |
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| CN204573985U (en) * | 2015-04-08 | 2015-08-19 | 上海电气核电设备有限公司 | A kind of device that puts in place for nuclear boiler steam-water separator |
| CN206271429U (en) * | 2016-11-03 | 2017-06-20 | 中国核电工程有限公司 | A kind of fixed structure of the passive heat derives system heat exchanger of nuclear power plant containment shell |
| CN208111099U (en) * | 2018-03-30 | 2018-11-16 | 哈电集团（秦皇岛）重型装备有限公司 | Reheater introducing device inside large container |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4016835A (en) * | 1975-08-01 | 1977-04-12 | Southwestern Engineering Company | Moisture separator-reheater |
| US4485069A (en) * | 1982-01-20 | 1984-11-27 | Westinghouse Electric Corp. | Moisture separator reheater with round tube bundle |
| CN2103408U (en) * | 1991-02-01 | 1992-05-06 | 齐鲁石油化工公司胜利炼油厂 | Wire rope guiding device for detaching and assembling pipe bundle of heat exchanger |
| CN102581526A (en) * | 2012-02-08 | 2012-07-18 | 上海电气电站设备有限公司 | Mounting structure of component in large-sized container |
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| CN108320824A (en) | 2018-07-24 |
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