CN205426653U - Thin pipe special fixture under compound loading of axial and interior pressure - Google Patents
Thin pipe special fixture under compound loading of axial and interior pressure Download PDFInfo
- Publication number
- CN205426653U CN205426653U CN201521054342.8U CN201521054342U CN205426653U CN 205426653 U CN205426653 U CN 205426653U CN 201521054342 U CN201521054342 U CN 201521054342U CN 205426653 U CN205426653 U CN 205426653U
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- circular tube
- thin
- wall circular
- tested thin
- axially
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Abstract
The utility model provides a thin pipe special fixture under compound loading of axial and interior pressure, including: front end clamping mechanism is surveyed thin -walled circular tube through a preceding flange joint for press from both sides the preceding port of tightly being surveyed thin -walled circular tube, and to being surveyed leading -in hydraulic oil of thin -walled circular tube or atmospheric pressure, rear end clamping mechanism is surveyed thin -walled circular tube through a back flange joint for press from both sides the back port of tightly being surveyed thin -walled circular tube, and guarantee to seal the hydraulic oil exit end of being surveyed thin -walled circular tube at the test state. The utility model discloses by with the dismouting, change more convenient flange fastening structure and replace, so, the utility model relates to a more reasonable, assembly structure is simple, easy test operation, avoids the crackle damage of welded joint department in the experimentation and the factor influence such as straightness of not hanging down, prevent drawing take off, the loading range is big. The anchor clamps leakproofness is good, need not to consider because the potential risk who brings is revealed to hydraulic oil. Whole anchor clamps assembly structure stability is extremely strong, has gained ideal effect through many times experimental verification.
Description
Technical field
This utility model relates to a kind of special fixture.Particularly relate to a kind of for axial with intrinsic pressure Action of Combined Loads under light wall pipe sample multiaxis mechanics performance study axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads.
Background technology
Along with environmental pollution and the day by day increase of shortage of resources pressure, nuclear power field, due to the cleaning of self, the advantage such as energy-conservation and sustainable, receives the favor of countries in the world and is greatly developed.For domestic, according to " the atmospheric pollution action Prevention Plans " of State Council with in JIUYUE, 2013 issue, it is contemplated that to the end of the year 2017, domestic nuclear power generating sets installed capacity is up to 50,000,000 kilowatts, and nuclear energy nuclear power field will obtain unprecedented application in China.At nuclear reactor internal, fuel can is positioned at nuclear energy fission reaction, nuclear energy is converted into the key position of heat energy；Meanwhile, cladding materials still prevents the first road barrier that fission products are outwards escaped, and is the parts that in nuclear reactor, operating mode is the harshest.It can be said that can the quality of cladding materials performance directly decide nuclear reaction and run in nuclear reactor safe efficiently.Up to now, fuel can inefficacy the nuclear leakage accident caused is of common occurrence in countries in the world, such as Chernobyl Plant, three mile island nuclear station, Fukushima nuclear power station etc..When properly functioning, involucrum can be fluctuated by reactor capability, the common effect such as Water cooling medium Flow vibration, cooling water pressure, fission gas pressure and fuel pellet extruding force.These external factor can periodically apply cyclic loading in the axial of fuel can and hoop, and involucrum pipe is in the Multi-axial Loading state of internal axial pressure more.Therefore, the test to the non-proportional loading mechanical property of nuclear reactor involucrum pipe becomes particularly critical.
The difficult point bearing intrinsic pressure thin-wall circular tube multiaxle fatigue experimental is the design of multiaxis fixture.Multiaxis fixture connects sample both sides, on the one hand ensure that hydraulic oil flow enters inside test specimen through fixture, and inside pipe, maintenance is stablized intrinsic pressure；On the other hand it also is able to make sample bear the plus load of axis direction at fatigue machine.At present, both at home and abroad about the multiaxis fixture assembly structure design thinking by intrinsic pressure pipe sample, specifically including that welding and card shell process etc., every kind of mentality of designing has again respective limitation all targetedly.The main design thought of welding is that test specimen is directly welded at interior pressure device oil inlet pipe pipe end, and this mentality of designing need not fixture and the assembling structure of complexity, relatively simple.But this mentality of designing does not accounts for the mother metal impact on welding.Zircaloy generally selected by cladding materials, and oil inlet pipe pipe end common steel, and not only it is impossible to ensure that welding perpendicularity after bi-material welding, and weld crack and defect are too much, and welding effect is the most undesirable.Another kind of welding mentality of designing is to customize oil inlet pipe pipe end with zircaloy, can preferably bear the effect of plus load, prevent from slipping and the leakage of hydraulic oil after the welding of such seam material.But, the oil inlet pipe pipe end after welding can not reuse, and zircaloy is not only caused waste, the very the biggest complexity that must add test greatly by this.Card shell process can ensure the perpendicularity of sample well, and does not has to weld the crackle brought and defect.But, card shell process bears axial tension due to self screw threads for fastening structure, it is impossible to bear excessive load, limits the rich of testing program.
Summary of the invention
Technical problem to be solved in the utility model be to provide a kind of can bear simultaneously intrinsic pressure and axial load axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads.
This utility model be the technical scheme is that a kind of axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, include: front end clamp system, tested thin-wall circular tube is connected by a forward flange, for clamping the front port of tested thin-wall circular tube, and import hydraulic oil or air pressure to tested thin-wall circular tube；Rear end clamp system, connects tested thin-wall circular tube by a rear flange, for clamping the rear port of tested thin-wall circular tube, and guarantees to seal the hydraulic oil outlet end of tested thin-wall circular tube in test mode.
nullDescribed front end clamp system is identical with rear end clamp system structure，All include by disc structure、Cylindrical structural and clamping termination set gradually integral part of T-shaped clamping end socket along axis、The disc structure one end being positioned at T-shaped clamping end socket clamps block for the taper clamping tested thin-wall circular tube and is embedded in the port of described tested thin-wall circular tube for supporting the hollow compression tube of tested thin-wall circular tube end，Wherein，Described taper clamping block is embedded in described forward flange or rear flange，The disc structure of described T-shaped clamping end socket constitutes the connection dish being bolted to connection with described forward flange or rear flange，It has been axially formed central oil passage in described T-shaped clamping end socket，Described central oil passage is positioned at the port of taper clamping block one end for inserting front port or the rear port of tested thin-wall circular tube，It is formed with, on the sidewall of the cylindrical structural of described T-shaped clamping end socket, the hydraulic fluid port for being connected petroleum pipeline or plug wire being connected with described central oil passage.
In the connection dish of described T-shaped clamping end socket, the circumference around described central oil passage is formed with a circle seal groove, is provided with for making survey thin-wall circular tube seal, with described T-shaped clamping end socket, the sealing ring coordinated in described seal groove.
It is circumferentially formed thereon 4 for the through hole fixing to be connected with described forward flange or rear flange on the connection dish of described T-shaped clamping end socket.
Described forward flange is identical with rear flange structure, all include and be axially formed the through cone embedded hole for embedding described taper clamping block, and the screwed hole for connecting bolt corresponding with the through hole on the connection dish of T-shaped clamping end socket along the formation of described cone embedded hole periphery, wherein, described cone embedded hole is being positioned at the diameter of described connection dish side more than the diameter away from connection dish side.
Described taper clamping block is to be made up of two completely identical in structure half-cone structure docking, described half-cone structure centrally along being axially formed the semi-circular recesses that can snap in described tested thin-wall circular tube, two half-cone structures of described docking are by clamping tested thin-wall circular tube in being embedded in the cone embedded hole of forward flange or rear flange.
On the groove face of described semi-circular recesses, outwardly being formed can make the burr of tested thin-wall circular tube and described taper clamping block increasing friction force.
It is axially formed one end other end that is connected with described tested thin-wall circular tube in the described hollow compression tube for supporting tested thin-wall circular tube end and clamps, with described T-shaped, the oil circuit that the central oil passage of end socket is connected.
Described hollow compression tube is in tested thin-wall circular tube, and the end face of one end aligns with the end face of described tested thin-wall circular tube, and the end face of the other end and taper clamp the tapered end of block in the face of neat.
Of the present utility model axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, assembling structure is because having given up welding method, by to dismount, to change more convenient flange fixing structure replacement, so, this utility model design is the most reasonable, assemble simple in construction, be prone to test operation, avoiding the factor impacts such as the Crack Damage at welding point and non-perpendicularity in experimentation, anti-slip, stand under load range are big.Fixture sealing is good, it is not necessary to consider owing to the potential risk brought revealed by hydraulic oil.Whole fixture assembling structural stability is extremely strong, achieves preferable effect through test of many times checking.
Accompanying drawing explanation
Fig. 1 be this utility model axially with the overall structure schematic diagram of light wall pipe special fixture under intrinsic pressure Action of Combined Loads；
Fig. 2 be this utility model axially with the overall cross-sectional schematic of light wall pipe special fixture under intrinsic pressure Action of Combined Loads；
Fig. 3 is forward flange or the structural representation of rear flange in this utility model；
Fig. 4 is the structural representation of half-cone structure in this utility model；
Fig. 5 is the structural representation of this utility model hollow core compression tube.
1: tested thin-wall circular tube 2: front end clamp system
3: forward flange 4: rear end clamp system
5: rear flange 6: bolt
21,41:T clevis holds end socket 22,42 taper clamping block
23,43: hollow compression tube 24,44 connection dish
25,45: central oil passage 26,46: hydraulic fluid port
27,47: sealing ring 28,48: through hole
31,51: cone embedded hole 32,52: screw
221,421: half-cone structure 222,422: semi-circular recesses
223,423: burr 231,431: oil circuit
Detailed description of the invention
Axially it is described in detail with light wall pipe special fixture under intrinsic pressure Action of Combined Loads of the present utility model below in conjunction with embodiment and accompanying drawing.
As shown in Figure 1, of the present utility model axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, include: front end clamp system 2, connect tested thin-wall circular tube 1 by a forward flange 3, for clamping the front port of tested thin-wall circular tube 1, and import hydraulic oil or air pressure to tested thin-wall circular tube 1；Rear end clamp system 4, connects tested thin-wall circular tube 1 by a rear flange 5, for clamping the rear port of tested thin-wall circular tube 1, and guarantees to seal the hydraulic oil outlet end of tested thin-wall circular tube 1 in test mode.As hydraulic oil is axially imported with the front end hydraulic fluid port of light wall pipe special fixture under intrinsic pressure Action of Combined Loads by of the present utility model, should utilize before test is suppressed of the present utility model axially with the air in the rear end hydraulic fluid port emptying hydraulic oil of light wall pipe special fixture under intrinsic pressure Action of Combined Loads.
nullDescribed front end clamp system 2 is identical with rear end clamp system 4 structure，All include by disc structure a、Cylindrical structural b and clamping termination c sets gradually integral part of T-shaped clamping end socket 21/41 along axis、The disc structure one end being positioned at T-shaped clamping end socket 21/41 clamps block 22/42 for the taper clamping tested thin-wall circular tube 1 and is embedded in the port of described tested thin-wall circular tube 1 for supporting the hollow compression tube 23/43 of tested thin-wall circular tube 1 end，Wherein，Described taper clamping block 22/42 is embedded in described forward flange 3 or rear flange 5，The disc structure of described T-shaped clamping end socket 21/41 is constituted fixes, by bolt 6, the connection dish 24/44 being connected with described forward flange 3 or rear flange 5，It has been axially formed central oil passage 25/45 in described T-shaped clamping end socket 21/41，Described central oil passage 25/45 is positioned at the port of taper clamping block 22/42 one end for inserting front port or the rear port of tested thin-wall circular tube 1，It is formed with, on the sidewall of the cylindrical structural of described T-shaped clamping end socket 21/41, the hydraulic fluid port 26/46 for being connected petroleum pipeline or plug wire being connected with described central oil passage 25/45.
In the connection dish 24/44 of described T-shaped clamping end socket 21/41, the circumference around described central oil passage 25/45 is formed with a circle seal groove, is provided with for making survey thin-wall circular tube 1 seal, with described T-shaped clamping end socket 21/41, the sealing ring 27/47 coordinated in described seal groove.4 it are circumferentially formed thereon for fixing, with described forward flange 3 or rear flange 5, the through hole 28/48 being connected on the connection dish 24/44 of described T-shaped clamping end socket 21/41.
As shown in Figure 2, described forward flange 3 is identical with rear flange 5 structure, all include and be axially formed the through cone embedded hole 31/51 for embedding described taper clamping block 22/42, and the screwed hole 32/52 for connecting bolt 6 corresponding with the through hole 28/48 on the connection dish 24/44 of T-shaped clamping end socket 21/41 along the formation of described cone embedded hole 31/51 periphery, wherein, described cone embedded hole 31/51 is being positioned at the diameter of described connection dish 24/44 side more than the diameter away from connection dish 24/44 side.
As shown in Figure 3, described taper clamping block 22/42 is to be made up of two completely identical in structure half-cone structure 221/421 docking, described half-cone structure 221/421 centrally along being axially formed the semi-circular recesses 222/422 that can snap in described tested thin-wall circular tube 1, two half-cone structures 221/421 of described docking are by clamping tested thin-wall circular tube 1 in being embedded in the cone embedded hole 31/51 of forward flange 3 or rear flange 5.On the groove face of described semi-circular recesses 222/422, outwardly being formed can make the burr 223/423 of tested thin-wall circular tube 1 and described taper clamping block 22/42 increasing friction force.
As shown in Figure 4, it is axially formed one end other end that is connected with described tested thin-wall circular tube 1 in the described hollow compression tube 23/43 for supporting tested thin-wall circular tube 1 end and clamps, with described T-shaped, the oil circuit 231/431 that the central oil passage 25/45 of end socket 21/41 is connected.Described hollow compression tube 23/43 is in tested thin-wall circular tube 1, and the end face of one end aligns with the end face of described tested thin-wall circular tube 1, and the end face of the other end and taper clamp the tapered end of block 22/42 in the face of together, preventing taper clamping block 22/42 by tested thin-wall circular tube 1 crushing.
Of the present utility model axially with under intrinsic pressure Action of Combined Loads during the work of light wall pipe special fixture, first insert hollow compression tube at tested thin-wall circular tube two ends respectively, clamp tested thin-wall circular tube two ends with taper clamping block the most respectively；Again the taper clamping tested thin-wall circular tube two ends is clamped block to be inserted respectively in the cone embedded hole of forward flange and rear flange, and by bolt, the T-shaped that the forward flange and rear flange that are inserted with taper clamping block are fixedly connected in corresponding front end clamp system or rear end clamp system is clamped on end socket, wherein, T-shaped at front end clamp system clamps and connects, on the hydraulic fluid port of end socket, the oil pipe being connected with fuel circulating pump, the hydraulic fluid port of rear end clamp system is connected to close the plug wire of described hydraulic fluid port, it is possible to tested thin-wall circular tube is tested.
Claims (9)
1. one kind axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, include: front end clamp system (2), tested thin-wall circular tube (1) is connected by a forward flange (3), for clamping the front port of tested thin-wall circular tube (1), and import hydraulic oil or air pressure to tested thin-wall circular tube (1)；Rear end clamp system (4), connects tested thin-wall circular tube (1) by a rear flange (5), is used for clamping the rear port of tested thin-wall circular tube (1), and guarantees to seal in test mode the hydraulic oil outlet end of tested thin-wall circular tube (1).
nullOne the most according to claim 1 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads，It is characterized in that，Described front end clamp system (2) is identical with rear end clamp system (4) structure，All include by disc structure (a)、Cylindrical structural (b) and clamping termination (c) set gradually integral part of T-shaped clamping end socket (21/41) along axis、It is positioned at disc structure one end of T-shaped clamping end socket (21/41) be used for clamping taper clamping block (22/42) of tested thin-wall circular tube (1) and be embedded in the port of described tested thin-wall circular tube (1) and be used for supporting the hollow compression tube (23/43) of tested thin-wall circular tube (1) end，Wherein，Described taper clamping block (22/42) is embedded in described forward flange (3) or rear flange (5)，The disc structure of described T-shaped clamping end socket (21/41) is constituted fixes, with described forward flange (3) or rear flange (5), the connection dish (24/44) being connected by bolt (6)，It has been axially formed central oil passage (25/45) in described T-shaped clamping end socket (21/41)，Described central oil passage (25/45) is positioned at the port of taper clamping block (22/42) one end and is used for inserting front port or the rear port of tested thin-wall circular tube (1)，It is formed with, on the sidewall of the cylindrical structural of described T-shaped clamping end socket (21/41), the hydraulic fluid port (26/46) for being connected petroleum pipeline or plug wire being connected with described central oil passage (25/45).
One the most according to claim 2 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, in the connection dish (24/44) of described T-shaped clamping end socket (21/41), the circumference around described central oil passage (25/45) is formed with a circle seal groove, is provided with for making survey thin-wall circular tube (1) seal, with described T-shaped clamping end socket (21/41), the sealing ring (27/47) coordinated in described seal groove.
One the most according to claim 2 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, the connection dish (24/44) of described T-shaped clamping end socket (21/41) is circumferentially formed thereon 4 for the through hole (28/48) that be connected fixing with described forward flange (3) or rear flange (5).
One the most according to claim 2 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, described forward flange (3) is identical with rear flange (5) structure, all include and be axially formed the through cone embedded hole (31/51) for embedding described taper clamping block (22/42), and the screwed hole for connecting bolt (6) (32/52) corresponding with the through hole (28/48) on the connection dish (24/44) of T-shaped clamping end socket (21/41) along the formation of described cone embedded hole (31/51) periphery, wherein, described cone embedded hole (31/51) is being positioned at the diameter of described connection dish (24/44) side more than the diameter away from connection dish (24/44) side.
One the most according to claim 2 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, described taper clamping block (22/42) is to be made up of two completely identical in structure half-cone structure (221/421) docking, described half-cone structure (221/421) centrally along being axially formed the semi-circular recesses (222/422) that can snap in described tested thin-wall circular tube (1), two half-cone structures (221/421) of described docking are by clamping tested thin-wall circular tube (1) in being embedded in the cone embedded hole (31/51) of forward flange (3) or rear flange (5).
One the most according to claim 6 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, on the groove face of described semi-circular recesses (222/422), outwardly being formed can make the burr (223/423) of tested thin-wall circular tube (1) and described taper clamping block (22/42) increasing friction force.
One the most according to claim 2 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, be axially formed one end in the described hollow compression tube (23/43) being used for supporting tested thin-wall circular tube (1) end and be connected with described tested thin-wall circular tube (1) oil circuit (231/431) that the other end is connected with the central oil passage (25/45) of described T-shaped clamping end socket (21/41).
One the most according to claim 8 axially with light wall pipe special fixture under intrinsic pressure Action of Combined Loads, it is characterized in that, described hollow compression tube (23/43) is in tested thin-wall circular tube (1), the end face of one end aligns with the end face of described tested thin-wall circular tube (1), and the end face of the other end and the tapered end of taper clamping block (22/42) are in the face of neat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054342.8U CN205426653U (en) | 2015-12-15 | 2015-12-15 | Thin pipe special fixture under compound loading of axial and interior pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521054342.8U CN205426653U (en) | 2015-12-15 | 2015-12-15 | Thin pipe special fixture under compound loading of axial and interior pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205426653U true CN205426653U (en) | 2016-08-03 |
Family
ID=56537155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521054342.8U Expired - Fee Related CN205426653U (en) | 2015-12-15 | 2015-12-15 | Thin pipe special fixture under compound loading of axial and interior pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205426653U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403452A (en) * | 2015-12-15 | 2016-03-16 | 天津大学 | Thin tube dedicated fixture under action of axial and internal pressure composite load |
| CN114235589A (en) * | 2021-12-08 | 2022-03-25 | 南通市建筑科学研究院有限公司 | Clamp of hydrostatic testing machine for pipes |
-
2015
- 2015-12-15 CN CN201521054342.8U patent/CN205426653U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403452A (en) * | 2015-12-15 | 2016-03-16 | 天津大学 | Thin tube dedicated fixture under action of axial and internal pressure composite load |
| CN105403452B (en) * | 2015-12-15 | 2018-04-03 | 天津大学 | Axial direction and light wall pipe special fixture under internal pressure Action of Combined Loads |
| CN114235589A (en) * | 2021-12-08 | 2022-03-25 | 南通市建筑科学研究院有限公司 | Clamp of hydrostatic testing machine for pipes |
| CN114235589B (en) * | 2021-12-08 | 2024-04-16 | 南通市建筑科学研究院有限公司 | Clamp of pipe hydrostatic testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20171215 |