CN112649289B - Clamping device and fixing mechanism of heat exchange tube - Google Patents
Clamping device and fixing mechanism of heat exchange tube Download PDFInfo
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- CN112649289B CN112649289B CN202011449862.4A CN202011449862A CN112649289B CN 112649289 B CN112649289 B CN 112649289B CN 202011449862 A CN202011449862 A CN 202011449862A CN 112649289 B CN112649289 B CN 112649289B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 238000000429 assembly Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 24
- 238000002474 experimental method Methods 0.000 abstract description 13
- 238000005452 bending Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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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
- Y02E30/30—Nuclear fission reactors
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a clamping device and a fixing mechanism of a heat exchange tube, comprising: the first clamping assembly is used for clamping one end of the heat exchange tube; the second clamping assembly is used for fixing the other end of the heat exchange tube; a fixed mount; the first fixing seat and the second fixing seat are respectively fixed with a first clamping component; the sliding seat is arranged on the fixed frame; and the balance assembly is used for connecting the two heat exchange tubes. In the clamping device, a revolute pair is formed between the sliding rail and the first sliding block, so that the pretightening force generated when the heat exchange tube is screwed down is unloaded, and a test experiment is smoothly carried out; in fixed establishment, two heat exchange tubes of fixed centre gripping simultaneously, and set up balanced subassembly between two heat exchange tubes, avoided the heat exchange tube to produce when the pretension the interference to the experiment, reduced the error of experiment greatly.
Description
Technical Field
The invention relates to the technical field of heat exchange tubes in nuclear power steam generators, in particular to a clamping device and a fixing mechanism of a heat exchange tube.
Background
The heat exchange tube is an indispensable part of the nuclear power steam generator and plays a role in heat exchange in specified temperature, pressure and different media. In a nuclear power station, the U-shaped pipe vibrates in the surface of a bent pipe area due to flow-induced vibration, so that the heat exchange pipe and a support bearing plate are coupled in various friction modes in the operation process, including impact wear, fretting wear, sliding wear and the like. In recent years, cases of contact damage of heat exchange pipes have been gradually discovered, and friction test experiments for heat exchange pipes have been required.
However, in the friction test experiment process of the heat exchange tube, when the clamping and fixing device pre-tensions the heat exchange tube, the heat exchange tube is twisted and bent, so that a test result has a very large error, and finally the test result has no reference value.
Disclosure of Invention
In view of the above disadvantages in the prior art, the present invention provides a clamping device and a fixing mechanism for a heat exchange tube, which are used to solve the problem of an error in a test result caused by the clamping device in the prior art.
The technical scheme adopted by the invention for solving the technical problem is a clamping device of a heat exchange tube, which comprises:
first centre gripping subassembly, it sets up in the one end of heat exchange tube, first centre gripping subassembly includes: a slide rail; the first limiting sliding block and the second limiting sliding block are both arranged on the sliding rail, and the distance between the first limiting sliding block and the second limiting sliding block is adjustable; the first sliding block is used for fixing one end of a heat exchange tube, is arranged on the sliding rail and can slide along the sliding rail between the first limiting sliding block and the second limiting sliding block, and a revolute pair is formed between the first sliding block and the sliding rail;
the second centre gripping subassembly, it sets up in the other end of heat exchange tube, the second centre gripping subassembly includes: a chute; the third limiting slide block and the fourth limiting slide block are both arranged in the sliding groove, and the distance between the third limiting slide block and the fourth limiting slide block is adjustable; the second sliding block is used for fixing the other end of the heat exchange tube, is arranged on the sliding groove and can slide between the third limiting sliding block and the fourth limiting sliding block along the sliding groove;
the first limiting slide block and the second limiting slide block are both provided with first locking bolts, and the sliding between the first limiting slide block/the second limiting slide block and the sliding rail can be locked or unlocked by rotating the first locking bolts;
and the third limiting slide block and the fourth limiting slide block are both provided with second locking bolts, and the second locking bolts are rotated to lock or unlock the third limiting slide block/the fourth limiting slide block and the sliding grooves.
Preferably, the first slider includes: the first body is arranged on the slide rail, can slide along the slide rail and rotates by taking the slide rail as an axis; the first clamping block is fixed on the first body and provided with a first clamping part matched with the outer wall of the heat exchange tube; the second clamping block is connected with the first clamping block through a bolt, and a second clamping part matched with the outer wall of the heat exchange tube is formed in the second clamping block;
the slide rail is cylindricly setting, first body seted up with the recess of slide rail adaptation.
Preferably, the second slider includes: the second body is arranged on the sliding groove and can slide along the sliding groove; the third clamping block is fixed on the second body and provided with a third clamping part matched with the outer wall of the heat exchange tube; the fourth clamping part is in bolted connection with the third clamping part, and the fourth clamping block is provided with a fourth clamping part matched with the outer wall of the heat exchange tube;
the cross-section of spout is the rectangle setting, the second body seted up with the lug of the inner wall laminating of spout.
The utility model provides a fixed establishment of heat exchange tube, includes two clamping device, still includes:
a fixed mount;
the first fixing seat and the second fixing seat are respectively fixed with a first clamping component;
the sliding seat is arranged on the fixed frame, and the relative position between the sliding seat and the fixed frame can be adjusted; two ends of the sliding seat are respectively provided with a second clamping assembly, and the relative positions of the two second clamping assemblies and the sliding seat can be adjusted;
the balance assembly is used for connecting the two heat exchange tubes; the balance assembly includes: the balance rod is provided with a first connecting part, a second connecting part and a third connecting part, the second connecting part is located between the first connecting part and the third connecting part, the first connecting part is connected with one heat exchange tube, the third connecting part is connected with another heat exchange tube, and the second connecting part is used for connecting a power assembly.
Preferably, the fixing frame comprises a cross beam and two vertical seats, and two ends of the cross beam are respectively provided with one vertical seat; the two sides of the cross beam are provided with a plurality of first slotted hole groups along the length direction of the cross beam, and each first slotted hole group comprises two first slotted holes arranged along the height direction of the cross beam.
Preferably, the sliding seat comprises a seat body and two connecting plates connected with the seat body, and two sides of the cross beam are respectively provided with one connecting plate; two second slotted holes are formed in the two connecting plates, and the second slotted holes are fixed to any one first slotted hole group through bolts.
Preferably, the first slot is perpendicular to the second slot; the length of the second slotted hole is larger than the distance between two first slotted holes in the first slotted hole group.
Preferably, the seat body has a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface is arranged opposite to the third side surface, and the second side surface is arranged opposite to the fourth side surface;
the first side face and the third side face are provided with a plurality of third slotted holes along the length direction of the seat body, and the connecting plate is fixed at any position of any third slotted hole through a bolt; the length direction of the third slot hole is vertical to the length direction of the sliding chute;
the second side surface and the fourth side surface are both provided with a plurality of fourth slotted holes along the length direction of the seat body, the second clamping assembly is fixed at any position of any one of the fourth slotted holes through bolts, and the length direction of the fourth slotted hole is vertical to the length direction of the sliding chute.
Preferably, the balance assembly further comprises two linkage blocks, and the two linkage blocks are both provided with a first through hole and a second through hole; the first connecting portion or the third connecting portion is fixed to the first through hole through a bolt, and the middle portion of the heat exchange tube is fixed to the second through hole through a bolt.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the distance between the first limiting slide block and the second limiting slide block is adjustable, and the distance between the third limiting slide block and the fourth limiting slide block is adjustable, so that the amplitude (up-down jumping amplitude) of the two ends of the heat exchange tube in the test process can be controlled, and further, various parameters of the heat exchange tube under different amplitudes can be tested, and the test device with the clamping device is wider in measurable range.
(2) A revolute pair is formed between the sliding rail and the first sliding block, namely the first sliding block can rotate by taking the sliding rail as a shaft, so that two ends of the heat exchange tube cannot be held, the second sliding block cannot be abutted against the inner wall of the sliding groove under the action of a pre-tightening force, and the first sliding block and the second sliding block can freely slide in respective preset ranges; namely, the rotatable connection of the slide rail and the first slide block avoids or reduces the transverse bending of the heat exchange tube, so that the test experiment can be smoothly carried out.
(3) Set up first locking bolt and second locking bolt respectively for the amplitude at heat exchange tube both ends can be adjusted alone, and then the both ends of test heat exchange tube are various parameters under the condition of different amplitudes simultaneously.
(4) A fixing mechanism can fix two heat exchange tubes, and simultaneously, the two heat exchange tubes are connected by a balance rod, and a second connecting part is arranged on the balance rod and used for connecting a power assembly, so that the testing efficiency is improved. The transverse bending forces on the two heat exchange tubes are transmitted to the first connecting part and the third connecting part and are counteracted on the balancing rods, so that the interference of transverse bending generated when the heat exchange tubes are pre-tightened on an experiment is avoided, and the experiment error is greatly reduced; meanwhile, the power assembly and the second connecting portion can be smoothly connected, torsion cannot be generated between the power assembly and the second connecting portion, and the service life of the power assembly and the balance rod is prolonged.
Drawings
FIG. 1 is a schematic structural view of a fixing mechanism in the embodiment;
FIG. 2 is a schematic structural view of a fixing frame according to an embodiment;
FIG. 3 is a schematic structural diagram of a balancing assembly according to an embodiment;
FIG. 4 is a schematic structural diagram of a linkage block in the embodiment;
FIG. 5 is a schematic structural view of a first clamping assembly according to an embodiment;
FIG. 6 is a schematic structural diagram of a first slider in the embodiment;
FIG. 7 is a schematic structural view of a second clamping assembly in accordance with an embodiment;
FIG. 8 is a schematic structural diagram of a second slider in the embodiment;
FIG. 9 is a schematic structural view of the sliding seat and two second clamping assemblies in the embodiment;
fig. 10 is a schematic structural view of the seat body in the embodiment;
FIG. 11 is a schematic structural view of a connection plate in the embodiment;
in the figure:
100. a fixed mount; 110. a cross beam; 111. a first group of slots; 111a, a first slot; 120. a vertical seat;
200. a first clamping assembly; 210. a first fixed seat; 220. a second fixed seat; 230. a slide rail; 240. a first limit slide block; 250. a second limit slide block; 260. a first slider; 261. a first body; 261a, a groove; 262. a first clamping block; 262a, a first clamping part; 263. a second clamping block; 263a, a second clamping part; 270. a first locking bolt;
300. a second clamping assembly; 310. a chute; 320. a third limiting slide block; 330. a fourth limiting slide block; 340. a second slider; 341. a second body; 341a, a bump; 342. a third clamping block; 342a, a third clamping part; 343. a fourth clamping block; 343a and a fourth clamping part; 350. a second locking bolt;
400. a balancing component; 410. a balancing bar; 420. a linkage block; 421. a first through hole; 422. a second through hole;
500. a sliding seat; 510. a base body; 511. a first side surface; 511a, a third slot; 512. a second side surface; 512a, a fourth slot; 513. a third side; 514. a fourth side; 520. a connecting plate; 521. a second slot;
600. a power assembly;
700. a heat exchange tube.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 5 to 8, the present invention discloses a clamping device for a heat exchange tube, comprising:
a first clamping assembly 200 disposed at one end of the heat exchange pipe 700, the first clamping assembly 200 comprising: a slide rail 230; the first limiting slide block 240 and the second limiting slide block 250 are both arranged on the slide rail 230, and the distance between the first limiting slide block 240 and the second limiting slide block 250 is adjustable; the first sliding block 260 is used for fixing one end of the heat exchange tube 700, the first sliding block 260 is arranged on the sliding rail 230 and can slide along the sliding rail 230 between the first limiting sliding block 240 and the second limiting sliding block 250, and a revolute pair is formed between the first sliding block 260 and the sliding rail 230;
a second clamping member 300 disposed at the other end of the heat exchange pipe 700, the second clamping member 300 comprising: a chute 310; the third limiting sliding block 320 and the fourth limiting sliding block 330 are both arranged on the sliding groove 310, and the distance between the third limiting sliding block 320 and the fourth limiting sliding block 330 is adjustable; a second sliding block 340 for fixing the other end of the heat exchange tube 700, wherein the second sliding block 340 is disposed on the sliding groove 310 and can slide along the sliding groove 310 between the third limiting sliding block 320 and the fourth limiting sliding block 330;
the first limit sliding block 240 and the second limit sliding block 250 are both provided with a first locking bolt 270, and the sliding between the first limit sliding block 240/the second limit sliding block 250 and the sliding rail 230 can be locked or unlocked by rotating the first locking bolt 270;
the third limiting sliding block 320 and the fourth limiting sliding block 330 are both provided with a second locking bolt 350, and the sliding between the third limiting sliding block 320/the fourth limiting sliding block 330 and the sliding groove 310 can be locked or unlocked by rotating the second locking bolt 350.
The specific working steps and principle of the embodiment are as follows:
the first clamping assembly 200 clamps any one end of the heat exchange pipe 700, and the second clamping assembly 300 clamps the other end of the heat exchange pipe 700; the first limiting slide 240 and the second limiting slide 250 are arranged to ensure that the first slide 260 (i.e. one end of the heat exchange tube 700) can slide between the first limiting slide 240 and the second limiting slide 250, preferably, the distance between the first limiting slide 240 and the second limiting slide 250 is adjustable, so that the amplitude (the amplitude of vertical run-out) of one end of the heat exchange tube 700 in the test process can be controlled, and further, the distance between the first limiting slide 240 and the second limiting slide 250 can be changed to measure various parameters of the heat exchange tube 700 under different amplitudes, so that the test device with the clamping device can be wider in measurable range; similarly, in the second clamping assembly 300, the third limiting slider 320 and the fourth limiting slider 330 are arranged to enable the other end of the heat exchange tube 700 to freely slide within another preset range, preferably, the distance between the third limiting slider 320 and the fourth limiting slider 330 is adjustable, so that the distance between the third limiting slider 320 and the fourth limiting slider 330 can be changed to measure various parameters of the heat exchange tube 700 under different amplitudes, and the testing device with the clamping device can have a wider measurable range.
Before testing the heat exchange pipe, the heat exchange pipe needs to be fixed and pressed, and the sources for generating pretightening force mainly comprise two sources: firstly, pre-tightening force generated by other equipment for pressing the heat exchange pipe is generated; and secondly, pre-tightening force is generated when the two ends of the heat exchange tube are tightened.
Specifically, when the heat exchange tube 700 is pre-tensioned, the heat exchange tube 700 is bent in the transverse direction (i.e., the heat exchange tube 700 is bent in the direction perpendicular to the length direction of the sliding groove 310 or the sliding rail 230), and the two ends of the heat exchange tube 700 are held back by the transverse bending, so that the second sliding block 340 is pressed against the inner wall of the sliding groove 310 under the action of the pre-tensioning force and cannot slide in the sliding groove 310, and the experiment fails. In this embodiment, a revolute pair is formed between the sliding rail 230 and the first sliding block 260, that is, the first sliding block 260 can rotate around the sliding rail 230, so that the two ends of the heat exchange tube 700 are not held back, that is, the second sliding block 340 is not abutted against the inner wall of the sliding groove 310 under the action of a pre-tightening force, and the first sliding block 260 and the second sliding block 340 can freely slide within respective preset ranges; that is to say, the rotatable connection of the slide rail 230 and the first slide block 260 unloads the pre-tightening force applied to the two ends of the heat exchange tube during tightening, and meanwhile, the situation that the heat exchange tube 700 is bent transversely after being pressed by other settings is avoided or alleviated, so that the test experiment can be smoothly performed.
The sliding unlocking or locking of each limiting slide block is realized through the rotation of the locking bolt, the adjustment of the distance between the first limiting slide block 240 and the second limiting slide block 250 and the adjustment of the distance between the third limiting slide block 320 and the fourth limiting slide block 330 are realized, and the adjustment of the amplitude at the two ends of the heat exchange tube 700 is further realized.
Preferably, since the first locking bolt 270 and the second locking bolt 350 are respectively provided, the amplitudes of both ends of the heat exchange pipe 700 can be independently adjusted, thereby testing various parameters of both ends of the heat exchange pipe 700 at the same time under the condition of different amplitudes.
The first slider 260 includes: a first body 261 disposed on the slide rail 230, wherein the first body 261 can slide along the slide rail 230 and rotate around the slide rail 230; a first clamping block 262 fixed to the first body 261, the first clamping block 262 being provided with a first clamping portion 262a adapted to an outer wall of the heat exchange tube 700; a second clamping block 263, which is connected to the first clamping block 262 by bolts, wherein the second clamping block 263 is provided with a second clamping portion 263a adapted to the outer wall of the heat exchange tube 700;
the slide rail 230 is disposed in a cylindrical shape, and the first body 261 is provided with a groove 261a adapted to the slide rail 230.
The advantage of setting up first clamping part 262a and second clamping part 263a and the two is through bolted connection lies in, it is more convenient to operate when the installation is fixed or demolish heat exchange tube 700, only need the screw rod of rotating bolted connection department can, simultaneously, the screwing up dynamics of heat exchange tube 700 still can be adjusted to the rotating screw rod, the pretightning force that can take the initiative alleviate or avoid because the production when screwing up, and then reduce or eliminate the harmful effects of this pretightning force in to the test procedure of heat exchange tube 700.
The second slider 340 includes: a second body 341 disposed on the sliding groove 310 and slidable along the sliding groove 310; a third clamping block 342 fixed to the second body 341, wherein the third clamping block 342 is provided with a third clamping portion 342a adapted to the outer wall of the heat exchange tube 700; a fourth clamping portion 343a which is bolted to the third clamping portion 342a, and a fourth clamping portion 343a adapted to the outer wall of the heat exchange tube 700 is formed on the fourth clamping block 343;
the cross section of the sliding groove 310 is rectangular, and the second body 341 is provided with a protrusion 341a attached to the inner wall of the sliding groove 310.
Like the first slider 260, in the second slider 340, the third clamping portion 342a and the fourth clamping portion 343a are advantageous in that: the operation is more convenient when fixing or demolishing heat exchange tube 700 in the installation, only need the screw rod of rotating bolted connection department can, simultaneously, the screwing up dynamics of heat exchange tube 700 still can be adjusted to the rotating screw rod, and the pretightning force that produces when can initiatively alleviate or avoid owing to screwing up, and then reduces or eliminates the harmful effects of this pretightning force in to the test process of heat exchange tube 700.
Referring to fig. 1 to 11, the present invention further discloses a fixing mechanism for a heat exchange tube, which includes two clamping devices, and further includes:
a fixing frame 100;
the first clamping assembly 200 is fixed on the first fixing seat 210 and the second fixing seat 220 respectively;
a sliding seat 500 disposed on the fixing frame 100, wherein a relative position between the sliding seat 500 and the fixing frame 100 is adjustable; two ends of the sliding seat 500 are respectively provided with a second clamping assembly 300, and the relative positions between the two second clamping assemblies 300 and the sliding seat 500 can be adjusted;
a balance assembly 400 for coupling the two heat exchange tubes 700; the balancing assembly 400 includes: the balance bar 410, the balance bar 410 has first connecting portion, second connecting portion and third connecting portion, the second connecting portion be in first connecting portion with between the third connecting portion, first connecting portion are connected with a heat exchange tube 700, the third connecting portion are connected with another heat exchange tube 700, the second connecting portion are used for connecting power component 600.
Specifically, in the fixing mechanism, the power assembly 600 drives the balance bar 410 to move up and down, and the first connecting portion and the second connecting portion of the balance bar 410 drive the two heat exchange tubes 700 to slide up and down, so as to simulate the movement track of the heat exchange tubes 700 when in use, and test various parameters of the heat exchange tubes 700. Wherein, can test two heat exchange tubes 700 simultaneously in a fixed establishment, improved efficiency of software testing.
Further, as shown in fig. 1 and 3, when the heat exchange tube 700 is pre-tightened without the balance assembly 400, the heat exchange tube 700 is bent transversely, and then the position of the original portion for connecting the power assembly 600 is driven to deviate, and the heat exchange tube 700 cannot be directly aligned to the power assembly 600, at this time, a torsion force exists between the power assembly 600 and the portion for connecting the power assembly 600, and the torsion force greatly interferes with the testing process, so that the testing result has no reference value; moreover, under the condition that the power assembly 600 drives the heat exchange tube 700 to move at a high speed, the torsion can cause great damage to the power assembly 600, and the service life of the power assembly 600 is greatly shortened. In the embodiment, two heat exchange tubes 700 are arranged, the balance bar 410 is used for connecting the two heat exchange tubes 700, and the balance bar 410 is provided with a second connecting part for connecting the power assembly 600, at this time, the transverse bending force on the two heat exchange tubes 700 can be transmitted to the first connecting part and the third connecting part, and the two forces are counteracted on the balance bar 410, so that the interference of the force generated when the heat exchange tubes 700 are pre-tightened on the experiment is avoided, and the experiment error is greatly reduced; meanwhile, the power assembly 600 and the second connecting portion can be smoothly connected, no torsion is generated between the power assembly 600 and the second connecting portion, and the service lives of the power assembly 600 and the balance bar 410 are prolonged.
Preferably, the first connecting portion and the third connecting portion are two ends of the balance bar 410, and the second connecting portion is located at a midpoint of the balance bar 410, so that the force leakage of the balance bar 410 is more thorough, and the power assembly 600 is more fully protected.
Further, the relative position between the sliding seat 500 and the fixing frame 100 is adjustable, so that the distance between the first clamping assembly 200 and the second clamping assembly 300 is adjustable, i.e. the fixing mechanism can fix heat exchange tubes 700 with different lengths;
the relative positions between the two second clamping assemblies 300 and the sliding seat 500 can be adjusted; that is, when the heat exchange tube 700 is bent in a lateral direction, the position of the second clamping assembly 300 on the sliding seat 500 can be adjusted, so that the heat exchange tube 700 is not bent any more, thereby releasing most of the pre-tightening force generated during tightening, and reducing the test error.
The fixing frame 100 comprises a cross beam 110 and two vertical seats 120, wherein two ends of the cross beam 110 are respectively provided with one vertical seat 120; both sides of the cross beam 110 are provided with a plurality of first slot groups 111 along the length direction of the cross beam 110, and each first slot group 111 comprises two first slots 111a arranged along the height direction of the cross beam 110.
The sliding seat 500 includes a seat body 510 and two connecting plates 520 connected to the seat body 510, and two sides of the cross beam 110 are respectively provided with one of the connecting plates 520; two second slots 521 are formed in both of the connecting plates 520, and the second slots 521 are bolted to any one of the first slot groups 111.
This arrangement allows the sliding seat 500 to be adjustably fixed to the cross member 110 to accommodate different lengths of the heat exchange pipe 700.
The first slot 111a is perpendicular to the second slot 521; the length of the second slot 521 is greater than the distance between the two first slots 111a in the first slot group 111.
When the length of the second slot 521 is greater than the distance between the two first slots 111a in the first slot group 111, any position of the second slot 521 on the connecting plate 520 is bolted to the first slot 111a, i.e. the connecting plate 520 also has a height-adjustable function, and adjusting the height of the connecting plate 520 can make the sliding seat 500 adapt to different heights of the first clamping assembly 200; it can be understood that the heights of the first limiting slide 240, the second limiting slide 250, the third limiting slide 320 and the fourth limiting slide 330 are adjusted to enable the two ends of the heat exchange tube 700 to be at the same height, so as to ensure that the experiment is performed smoothly.
The base 510 has a first side 511, a second side 512, a third side 513 and a fourth side 514, the first side 511 is opposite to the third side 513, and the second side 512 is opposite to the fourth side 514;
the first side 511 and the third side 513 are respectively provided with a plurality of third slots 511a along the length direction of the seat body 510, and the connecting plate 520 is fixed at any position of any third slot 511a by bolts; the length direction of the third slot 511a is perpendicular to the length direction of the sliding slot 310; that is, the positions of the seat body 510 and the connection plate 520 are adjustable, so that the two second clamping assemblies 300 on the seat body 510 can be aligned to the heat exchange tube 700, thereby reducing the lateral bending of the heat exchange tube 700.
The second side 512 and the fourth side 514 are both provided with a plurality of fourth slots 512a along the length direction of the base 510, the second clamping assembly 300 is bolted to any position of any of the fourth slots 512a, and the length direction of the fourth slots 512a is perpendicular to the length direction of the sliding slot 310. That is, the two second clamping assemblies 300 can be laterally adjusted relative to the housing 510, so that the two second clamping assemblies 300 are directly opposite to the heat exchange tube 700, and the lateral bending of the heat exchange tube 700 is further reduced. Wherein the position between the seat 510 and the connection plate 520 is adjusted to a coarse adjustment, the position between the second clamping assembly 300 and the seat 510 is adjusted to a fine adjustment, and the step adjustment further reduces the lateral bending amplitude occurring when the heat exchange tube 700 is fixed.
The balance assembly 400 further comprises two linkage blocks 420, and the two linkage blocks 420 are both provided with a first through hole 421 and a second through hole 422; the first connecting portion or the third connecting portion is bolted to the first through hole 421, and the middle portion of the heat exchange tube 700 is bolted to the second through hole 422.
The first connecting portion and the third connecting portion are symmetrical with respect to the second connecting portion, so that when the power assembly 600 drives the balance bar 410 to move, the forces of the balance bar 410 to the two heat exchange tubes 700 are kept consistent, and the consistency of the test results of the two heat exchange tubes 700 is further ensured.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. A clamping device of a heat exchange tube is characterized by comprising:
first centre gripping subassembly, it sets up in the one end of heat exchange tube, first centre gripping subassembly includes: a slide rail; the first limiting sliding block and the second limiting sliding block are both arranged on the sliding rail, and the distance between the first limiting sliding block and the second limiting sliding block is adjustable; the first sliding block is used for fixing one end of the heat exchange tube, the first sliding block is arranged on the sliding rail and can slide along the sliding rail between the first limiting sliding block and the second limiting sliding block, and a revolute pair is formed between the first sliding block and the sliding rail;
the second centre gripping subassembly, it sets up in the other end of heat exchange tube, the second centre gripping subassembly includes: a chute; the third limiting sliding block and the fourth limiting sliding block are both arranged in the sliding groove, and the distance between the third limiting sliding block and the fourth limiting sliding block is adjustable; the second sliding block is used for fixing the other end of the heat exchange tube, is arranged on the sliding groove and can slide between the third limiting sliding block and the fourth limiting sliding block along the sliding groove;
the first limiting slide block and the second limiting slide block are both provided with first locking bolts, and the sliding between the first limiting slide block/the second limiting slide block and the sliding rail can be locked or unlocked by rotating the first locking bolts;
and the third limiting slide block and the fourth limiting slide block are both provided with second locking bolts, and the second locking bolts are rotated to lock or unlock the third limiting slide block/the fourth limiting slide block and the sliding grooves.
2. The heat exchange tube holding apparatus as claimed in claim 1, wherein the first sliding block comprises: the first body is arranged on the slide rail, can slide along the slide rail and rotates by taking the slide rail as an axis; the first clamping block is fixed on the first body, and a first clamping part matched with the outer wall of the heat exchange tube is formed in the first clamping block; the second clamping block is connected with the first clamping block through a bolt, and a second clamping part matched with the outer wall of the heat exchange tube is formed in the second clamping block;
the slide rail is cylindrically arranged, and the first body is provided with a groove matched with the slide rail.
3. The heat exchange tube holding apparatus as set forth in claim 1, wherein said second sliding block comprises: the second body is arranged on the sliding groove and can slide along the sliding groove; the third clamping block is fixed on the second body and provided with a third clamping part matched with the outer wall of the heat exchange tube; the fourth clamping block is connected with the third clamping block through a bolt, and a fourth clamping part matched with the outer wall of the heat exchange tube is formed in the fourth clamping block;
the cross-section of spout is the rectangle setting, the second body seted up with the lug of the inner wall laminating of spout.
4. A fixing mechanism of a heat exchange pipe comprising two holding devices as set forth in any one of claims 1 to 3, characterized by further comprising:
a fixed mount;
the first fixing seat and the second fixing seat are respectively fixed with a first clamping component;
the sliding seat is arranged on the fixed frame, and the relative position between the sliding seat and the fixed frame can be adjusted; two ends of the sliding seat are respectively provided with a second clamping assembly, and the relative positions of the two second clamping assemblies and the sliding seat can be adjusted;
the balance assembly is used for connecting the two heat exchange tubes; the balance assembly includes: the balance rod is provided with a first connecting part, a second connecting part and a third connecting part, the second connecting part is located between the first connecting part and the third connecting part, the first connecting part is connected with one heat exchange tube, the third connecting part is connected with another heat exchange tube, and the second connecting part is used for connecting a power assembly.
5. The fixing mechanism for the heat exchange tube of claim 4, wherein the fixing frame comprises a cross beam and two vertical seats, and two ends of the cross beam are respectively provided with one of the vertical seats; the two sides of the cross beam are provided with a plurality of first slotted hole groups along the length direction of the cross beam, and each first slotted hole group comprises two first slotted holes arranged along the height direction of the cross beam.
6. The fixing mechanism for a heat exchange tube of claim 5, wherein the sliding seat comprises a seat body and two connecting plates connected to the seat body, and one connecting plate is disposed on each of two sides of the cross beam; two second slotted holes are formed in the two connecting plates, and the second slotted holes are fixed to any one first slotted hole group through bolts.
7. The heat exchange tube fixing mechanism according to claim 6, wherein the first slot is perpendicular to the second slot; the length of the second slotted hole is larger than the distance between two first slotted holes in the first slotted hole group.
8. The heat exchange tube fixing mechanism as claimed in claim 6, wherein the seat body has a first side, a second side, a third side and a fourth side, the first side is disposed opposite to the third side, and the second side is disposed opposite to the fourth side;
the first side face and the third side face are provided with a plurality of third slotted holes along the length direction of the seat body, and the connecting plate is fixed at any position of any third slotted hole through a bolt; the length direction of the third slot hole is vertical to the length direction of the sliding chute;
the second side surface and the fourth side surface are both provided with a plurality of fourth slotted holes along the length direction of the seat body, the second clamping assembly is fixed at any position of any one of the fourth slotted holes through bolts, and the length direction of the fourth slotted hole is vertical to the length direction of the sliding chute.
9. The fixing mechanism for the heat exchange tube of claim 4, wherein the balance assembly further comprises two linkage blocks, and each of the two linkage blocks is provided with a first through hole and a second through hole; the first connecting portion or the third connecting portion is fixed to the first through hole through a bolt, and the middle portion of the heat exchange tube is fixed to the second through hole through a bolt.
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| CN202011449862.4A CN112649289B (en) | 2020-12-09 | 2020-12-09 | Clamping device and fixing mechanism of heat exchange tube |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015166648A (en) * | 2014-03-03 | 2015-09-24 | 前田製管株式会社 | U-shaped tube fixture for heat exchanging pile and heat exchanging pile mounting method |
| CN110425922A (en) * | 2019-08-12 | 2019-11-08 | 姜金娜 | A kind of detachable heat exchanger |
| CN210037422U (en) * | 2019-05-31 | 2020-02-07 | 中铁二院工程集团有限责任公司 | Testing arrangement of power consumption original paper |
| CN110806140A (en) * | 2019-09-29 | 2020-02-18 | 浙江工业大学 | Heat exchange tube fixing device |
| CN110849751A (en) * | 2019-09-29 | 2020-02-28 | 浙江工业大学 | Heat exchange tube impact wear experimental device |
| CN210180253U (en) * | 2019-07-15 | 2020-03-24 | 青岛奥特斯机电系统工程有限公司 | Fastening device for heat exchange coil |
| CN210742031U (en) * | 2019-10-18 | 2020-06-12 | 深圳市泰科实业有限公司 | Cable bending property test machine |
| CN210833207U (en) * | 2019-09-17 | 2020-06-23 | 安徽天康特种钢管有限公司 | Fixing structure for condenser heat exchange tube |
| CN211576856U (en) * | 2019-12-24 | 2020-09-25 | 杭州布镭德工具有限公司 | Durable check out test set of saw bit |
| CN211697336U (en) * | 2020-02-29 | 2020-10-16 | 浙江理工大学 | A novel pendulum strikes device for analysis of carrot collision damage |
| CN211877642U (en) * | 2019-12-28 | 2020-11-06 | 中国石油天然气集团有限公司 | Oil casing full-size bending loading test system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11047631B2 (en) * | 2019-02-20 | 2021-06-29 | Caterpillar Inc. | Bumper clip for tube type heat exchangers |
-
2020
- 2020-12-09 CN CN202011449862.4A patent/CN112649289B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015166648A (en) * | 2014-03-03 | 2015-09-24 | 前田製管株式会社 | U-shaped tube fixture for heat exchanging pile and heat exchanging pile mounting method |
| CN210037422U (en) * | 2019-05-31 | 2020-02-07 | 中铁二院工程集团有限责任公司 | Testing arrangement of power consumption original paper |
| CN210180253U (en) * | 2019-07-15 | 2020-03-24 | 青岛奥特斯机电系统工程有限公司 | Fastening device for heat exchange coil |
| CN110425922A (en) * | 2019-08-12 | 2019-11-08 | 姜金娜 | A kind of detachable heat exchanger |
| CN210833207U (en) * | 2019-09-17 | 2020-06-23 | 安徽天康特种钢管有限公司 | Fixing structure for condenser heat exchange tube |
| CN110806140A (en) * | 2019-09-29 | 2020-02-18 | 浙江工业大学 | Heat exchange tube fixing device |
| CN110849751A (en) * | 2019-09-29 | 2020-02-28 | 浙江工业大学 | Heat exchange tube impact wear experimental device |
| CN210742031U (en) * | 2019-10-18 | 2020-06-12 | 深圳市泰科实业有限公司 | Cable bending property test machine |
| CN211576856U (en) * | 2019-12-24 | 2020-09-25 | 杭州布镭德工具有限公司 | Durable check out test set of saw bit |
| CN211877642U (en) * | 2019-12-28 | 2020-11-06 | 中国石油天然气集团有限公司 | Oil casing full-size bending loading test system |
| CN211697336U (en) * | 2020-02-29 | 2020-10-16 | 浙江理工大学 | A novel pendulum strikes device for analysis of carrot collision damage |
Non-Patent Citations (2)
| Title |
|---|
| 刘振凤等.蒸汽发生器换热管与支承板的材料及结构.《一重技术》.2015,(第3期), * |
| 张力群等.预应力双管板换热器模拟计算和测试分析.《压力容器》.2018,第35卷(第5期), * |
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