CN209843264U - Flow-induced vibration test simulation device for spiral tube heat exchanger - Google Patents
Flow-induced vibration test simulation device for spiral tube heat exchanger Download PDFInfo
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- CN209843264U CN209843264U CN201822083078.0U CN201822083078U CN209843264U CN 209843264 U CN209843264 U CN 209843264U CN 201822083078 U CN201822083078 U CN 201822083078U CN 209843264 U CN209843264 U CN 209843264U
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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
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- 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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Abstract
The disclosure belongs to the field of reactors, and particularly relates to a flow-induced vibration test simulation device for a spiral tube heat exchanger. The device includes: a fan-shaped test section and an annular test section; wherein the fan-shaped test section includes: thick-walled sector tubes and thin-walled sector tubes; a straight pipe section is arranged in the thick-wall fan-shaped pipe, a radial inlet is formed in the outer cambered surface of the thick-wall fan-shaped pipe, and an axial outlet is formed at the lower end of the thick-wall fan-shaped pipe; the thin-wall fan-shaped pipe is fixedly connected with the thick-wall fan-shaped pipe; wherein the annular test section is of a thick-wall tubular structure; a spiral pipe section is arranged in the thick wall of the annular experiment section, four radial inlets are uniformly arranged at the upper end of the outer arc surface of the annular experiment, and four radial outlets are uniformly arranged at the lower end of the outer arc surface of the annular experiment; wherein the outlet of the fan-shaped test section is connected with the inlet of the annular test section; the outlet of the annular test section is connected with the inlet of the fan-shaped test section. Therefore, the test simulation device capable of reducing the test cost and improving the test accuracy is provided.
Description
Technical Field
The disclosure belongs to the field of reactors, and particularly relates to a flow-induced vibration test simulation device for a spiral tube heat exchanger.
Background
In order to relieve thermal stress generated by high temperature gradient between tube bundles, a common design of the large-scale sodium-cooled fast reactor intermediate heat exchanger adopts a space spiral bent tube scheme. Due to the addition of the structure, the area which can generate vibration caused by the tube bundle is added with a space bent tube area besides the inlet and the outlet and the support plate area.
Because the flow of the large fast reactor intermediate heat exchanger is very large, if the flow of the large fast reactor intermediate heat exchanger is 1:1, the machining cost of the test piece and the construction cost of the test bench are greatly increased.
In the prior art, for a straight pipe arranged in concentric circles, 1 is adopted: 1 scale model, but taking the 1/6 sector, this is a straight tube arranged for concentric circles; for the tube bundle structure of the spatial spiral elbow arranged according to the concentric circles, the flow field of the elbow area can be influenced by adopting the method, so that the flow-induced vibration of the test is different from the real condition, and the accuracy of the test result is reduced. Therefore, a test simulation device for flow-induced vibration of the spatial spiral bent-tube heat exchanger arranged in concentric circles needs to be redesigned.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
In order to overcome the defects of the prior art, the invention provides a spiral tube heat exchanger flow-induced vibration test simulation device and a test method thereof, wherein the test cost can be reduced, and the test accuracy can be improved.
(II) technical scheme
A flow-induced vibration test simulation device for a spiral tube heat exchanger, the device comprising: a fan-shaped test section and an annular test section;
wherein the fan-shaped test section includes: thick-walled sector tubes and thin-walled sector tubes; a straight pipe section is arranged in the thick-wall fan-shaped pipe, a radial inlet is formed in the outer cambered surface of the thick-wall fan-shaped pipe, and an axial outlet is formed at the lower end of the thick-wall fan-shaped pipe; the thin-wall fan-shaped pipe is fixedly connected with the thick-wall fan-shaped pipe;
wherein the annular test section is of a thick-wall tubular structure; a spiral pipe section is arranged in the thick wall of the annular experiment section, the upper end of the outer arc surface of the annular experiment is uniformly provided with a radial inlet, and the lower end of the outer arc surface of the annular experiment is uniformly provided with a radial outlet;
wherein the outlet of the fan-shaped test section is connected with the inlet of the annular test section; the outlet of the annular test section is connected with the inlet of the fan-shaped test section.
The number of inlets at the upper end of the annular test section is four, and the number of outlets at the lower end of the annular test section is four.
The flow of the fan-shaped test section is consistent with that of the annular test section.
And a fine adjustment valve is arranged between the outlet of the fan-shaped test section and the inlet connecting pipeline of the annular test section.
And a circulating pump is arranged between the outlet of the annular test section and the inlet connecting pipeline of the fan-shaped test section.
The four inlets of the annular test section have the same flow.
(III) advantageous effects
The present disclosure employs a redesigned simulation apparatus for experimental testing, saving 25% of bench scale and cost over 1:1 ratio simulation. Meanwhile, the flow-induced vibration under the real working condition is more approximate, and the accuracy of the test result is improved.
The flow-induced vibration test result of the space spiral tube heat exchanger is more accurate by adopting the 1/6 simulation device.
The test simulation device is simple in structure and convenient to operate, can effectively complete the flow-induced vibration test of the space spiral tube heat exchanger, and obtains a test result with high accuracy.
Drawings
FIG. 1 is a schematic view of a fan-shaped test segment and ring-shaped test segment connection configuration according to one embodiment of the present disclosure;
FIG. 2 is a schematic view of a fan-shaped test segment in the test simulation apparatus of FIG. 1;
fig. 3 is a schematic diagram of the structure of a ring-shaped test section in the test simulation device of fig. 1.
Wherein 1 the fan-shaped test section 2 the fine tuning valve 2 the annular test section 4 the circulating pump 5 the thick wall fan-shaped pipe 6 the thin wall fan-shaped pipe
Detailed Description
In order to express the technical content of the present disclosure more accurately, the following description is made in conjunction with the specific embodiments:
a flow-induced vibration test simulation device for a spiral tube heat exchanger, the device comprising: a fan-shaped test section 1 and an annular test section 3;
wherein fan-shaped test section 1 includes: a thick-wall sector pipe 5 and a thin-wall sector pipe 6; a straight pipe section is arranged inside the thick-wall fan-shaped pipe 5, a radial inlet is arranged on the outer cambered surface of the thick-wall fan-shaped pipe 5, and an axial outlet is arranged at the lower end of the thick-wall fan-shaped pipe 5; the thin-wall fan-shaped pipe 6 is fixedly connected with the thick-wall fan-shaped pipe 5;
wherein the annular test section 3 is of a thick-wall tubular structure; a spiral pipe section is arranged in the thick wall of the annular experiment section, four radial inlets are uniformly arranged at the upper end of the outer arc surface of the annular experiment, and four radial outlets are uniformly arranged at the lower end of the outer arc surface of the annular experiment;
wherein the outlet of the fan-shaped test section 1 is connected with the inlet of the annular test section 3, and the fine adjustment valves 2 are arranged between the connecting pipelines of the outlet of the fan-shaped test section 1 and the inlet of the annular test section 3; the outlet of the annular test section 3 is connected with the inlet of the fan-shaped test section 1, and a circulating pump 4 is arranged between the outlet of the annular test section 3 and the inlet connecting pipeline of the fan-shaped test section 1.
Examples
To space spiral tube heat exchanger, design the analogue means of making above-mentioned structure, wherein space spiral tube heat exchanger parameter is: the weight of the apparatus was 8t, the primary flow rate was 80kg/s, the weight of the completed simulation apparatus was 2t, and the primary flow rate was 20 kg/s.
The test method adopting the flow-induced vibration test simulation device for the spiral tube heat exchanger comprises the following steps:
a. connecting the fan-shaped test section 1 with the annular test section 3 in the manner shown in fig. 1;
b. installing the connected fan-shaped test section 1 and the connected annular test section 3 in a test bed;
c. 4-8 vibration sensors are respectively arranged in the middle of the straight tube section heat exchange tube in the middle of the fan-shaped test section 1,
4-8 vibration sensors are arranged in the middle of the spiral pipe section heat exchanger in the middle of the annular test section 3; connecting the sensor to a data acquisition instrument;
d. starting a circulating pump 4, and adjusting a fine adjustment valve 2 (a flow control valve) to ensure that the flow of a fan-shaped test section 1 and the flow of an annular test section 3 both reach 20kg/s, and the flow of four inlets of the annular test section 3 is equal to 5 kg/s;
e. and collecting and analyzing the data collected by the vibration sensor.
It will be apparent to those skilled in the art that various changes and modifications can be made in the present disclosure without departing from the spirit and scope of the disclosure. Thus, if such modifications and variations to the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, it is intended that the present disclosure also encompass such modifications and variations. The foregoing examples or embodiments are merely illustrative of the present disclosure, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the disclosure should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be included within the scope of the disclosure.
Claims (6)
1. A flow-induced vibration test simulation device for a spiral tube heat exchanger is characterized by comprising: a fan-shaped test section (1) and an annular test section (3);
wherein the fan-shaped test section (1) comprises: a thick-wall fan-shaped pipe (5) and a thin-wall fan-shaped pipe (6); a straight pipe section is arranged inside the thick-wall fan-shaped pipe (5), a radial inlet is formed in the outer arc surface of the thick-wall fan-shaped pipe (5), and an axial outlet is formed in the lower end of the thick-wall fan-shaped pipe (5); the thin-wall fan-shaped pipe (6) is fixedly connected with the thick-wall fan-shaped pipe (5);
wherein the annular test section (3) is of a thick-walled tubular structure; a spiral pipe section is arranged in the thick wall of the annular experiment section, the upper end of the outer arc surface of the annular experiment is uniformly provided with a radial inlet, and the lower end of the outer arc surface of the annular experiment is uniformly provided with a radial outlet;
wherein the outlet of the fan-shaped test section (1) is connected with the inlet of the annular test section (3); the outlet of the annular test section (3) is connected with the inlet of the fan-shaped test section (1).
2. A spiral tube heat exchanger flow induced vibration test simulation apparatus as claimed in claim 1, wherein the number of the inlet at the upper end of the annular test section (3) is four, and the number of the outlet at the lower end is four.
3. A flow-induced vibration test simulation device of a spiral tube heat exchanger as claimed in claim 1, wherein the fan-shaped test section (1) and the annular test section (3) have the same flow rate.
4. The flow-induced vibration test simulation device of the spiral tube heat exchanger as recited in claim 1, wherein a fine tuning valve (2) is arranged between the outlet of the fan-shaped test section (1) and the inlet connecting pipeline of the annular test section (3).
5. The flow-induced vibration test simulation device of the spiral tube heat exchanger as recited in claim 1, wherein a circulating pump (4) is arranged between the outlet of the annular test section (3) and the inlet connecting pipeline of the fan-shaped test section (1).
6. A spiral tube heat exchanger flow induced vibration test simulation apparatus as claimed in claim 2, wherein the four inlet flows of the annular test section (3) are the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822083078.0U CN209843264U (en) | 2018-12-12 | 2018-12-12 | Flow-induced vibration test simulation device for spiral tube heat exchanger |
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| CN201822083078.0U CN209843264U (en) | 2018-12-12 | 2018-12-12 | Flow-induced vibration test simulation device for spiral tube heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599193A (en) * | 2018-12-12 | 2019-04-09 | 中国原子能科学研究院 | A kind of spiral tube exchanger Flow vibration experiment simulator and its test method |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599193A (en) * | 2018-12-12 | 2019-04-09 | 中国原子能科学研究院 | A kind of spiral tube exchanger Flow vibration experiment simulator and its test method |
| CN109599193B (en) * | 2018-12-12 | 2024-05-14 | 中国原子能科学研究院 | Spiral tube heat exchanger flow induced vibration test simulation device and test method thereof |
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