CN204314027U - The compactedness test macro of high-temperature pipe flange under Moments effect - Google Patents
The compactedness test macro of high-temperature pipe flange under Moments effect Download PDFInfo
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- CN204314027U CN204314027U CN201420734445.8U CN201420734445U CN204314027U CN 204314027 U CN204314027 U CN 204314027U CN 201420734445 U CN201420734445 U CN 201420734445U CN 204314027 U CN204314027 U CN 204314027U
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Abstract
The utility model discloses the compactedness test macro of high-temperature pipe flange under a kind of Moments effect, it comprises left pipeline, right pipeline, and connecting the flange of left pipeline and right pipeline, described flange adopts pad to seal, and left pipeline, right pipeline, flange form flange cavity to be measured; Left pipeline is connected with pump by valve, and right pipeline welds with blind plate; Temperature sensor, pressure transducer, electric heater unit is provided with in flange cavity to be measured; Described flange is outside equipped with flange leakage mechanism for testing, and described flange leakage mechanism for testing comprises the cavity that leaks hunting surrounded by the wall that leaks hunting, described in the wall that leaks hunting be provided with imported valve, underflow opening valve, described in leak hunting in cavity and be provided with temperature sensor, pressure transducer; Described system also comprises Moments load maintainer.The utility model leak tested accuracy rate is high, all has stronger directive significance to scientific research and engineering.
Description
Technical field
The utility model relates to a set of flange test macro, is specifically related to the compactedness test macro of high-temperature pipe flange under a kind of Moments effect.
Background technology
Flange joint is connected mode conventional in petrochemical equipment, because it has the advantage being easy to remove and install, in the pressure vessel being widely used in the industries such as petrochemical industry, nuclear power, metallurgy, pharmacy and pipeline.Along with the contradiction of economic development and energy supply, oil refining and Chemical Engineering Technology develop rapidly, ubiquity high temperature and high pressure condition in various refinery device.Under high-temperature operation condition, the changes such as flange may deflect, warpage, creep, Crack Extension, flange each several part STRESS VARIATION is complicated; When there being Moments effect, flange each several part stress characteristics also can great changes have taken place, and deflection, warpage, crackle may aggravate to leak.It is the one of the main reasons that major accident occurs in the enterprises such as petrochemical complex that high-temperature flange leaks.Therefore, our compactedness test macro of being necessary to design high-temperature pipe flange under a kind of Moments effect is analyzed the slip of high-temperature flange under Moment outside, to ensure the security that pipeline connects.
Utility model content
The purpose of this utility model is to provide the compactedness test macro of high-temperature pipe flange under a kind of Moments effect, and described test macro is applied to the high-temperature flange under Moments effect, accurately can test the leakage of flange, ensures to produce, the carrying out smoothly of construction.
The utility model is achieved in that the compactedness test macro of high-temperature pipe flange under a kind of Moments effect, it comprises left pipeline, right pipeline, and connect the flange of left pipeline and right pipeline, described flange adopts pad to seal, and left pipeline, right pipeline, flange form flange cavity to be measured;
Described left pipeline is connected with pump by valve, and described right pipeline welds with blind plate; Be provided with in described flange cavity to be measured temperature sensor, pressure transducer, by electric heater electricity cabinet control electric heater unit;
Described flange is outside equipped with flange leakage mechanism for testing, described flange leakage mechanism for testing comprises the cavity that leaks hunting surrounded by the wall that leaks hunting, the described wall that leaks hunting is provided with imported valve, underflow opening valve, described imported valve, underflow opening valve also can be used for being filled with medium, described in leak hunting in cavity and be provided with temperature sensor, pressure transducer;
Described system also comprises Moments load maintainer, and described Moments load maintainer comprises hydraulic loading device, and described hydraulic loading device applies power to left and right pipeline, and the pipeline of flange connections forms moment of face, the large I free adjustment of moment.
Under the effect of this Moments high-temperature pipe flange compactedness test macro in, the left end of flange cavity to be measured is provided with a pump, the export pipeline of pump has a valve, export pipeline is directly connected with left pipeline, with pump by medium transport in flange cavity to be measured, and pressure transducer and temperature sensor being set in flange cavity to be measured, the temperature of medium in this temperature sensor monitors flange cavity to be measured, the pressure in flange cavity to be measured measured by this pressure transducer; The below of pipeline is provided with supporting bracket, is provided with drain tap above pipeline; Flange adopts bolt to connect, and seals with pad; The middle part of described flange cavity to be measured is provided with an electric heater unit, can heat medium in flange cavity to be measured.
Described Moments load maintainer is formed primarily of liquid crystal control panels, hydraulic loading device, loading support and loading arm; Described hydraulic loading device can be controlled by liquid crystal control panels, and the needs according to test come reasonably to load, and namely loads and can be loaded into arbitrary load value wanted in range from zero.The extension bar loading support and hydraulic loading device is welded as a whole.Described hydraulic loading device can provide the power of arbitrary size in range, described loading support is provided with loading arm, and loading arm can move left and right, with the bearing acting in conjunction under pipeline on loading support, there is provided dissimilar moment of flexure, described loading arm and left pipeline, right tube contacts.
Described flange leakage mechanism for testing is primarily of the cavity that leaks hunting, temperature sensor, pressure transducer composition; The described cavity that leaks hunting is provided with the valve of input measurement medium, conveniently uses when needs are filled with measurement medium; The described cavity that leaks hunting is provided with vent port and underflow opening.
Under the effect of this Moments, the compactedness test macro of high-temperature pipe flange is primarily of pipe flange bindiny mechanism (pipe flange bindiny mechanism is made up of pump, pipeline, flange, blind plate etc.), dielectric heating mechanism, Moments load maintainer, pump manufactures hyperbaric environment in flange cavity to be measured, the middle part of flange cavity to be measured is provided with an electric heater unit, by dielectric heating in cavity to be measured for flange to assigned temperature, temperature, pressure transducer measure temperature, the pressure of flange cavity to be measured.The upper any power applied in hydraulic loading device range of the pipeline (left pipeline, right pipeline) of described Moments load maintainer at flange two ends, this power forms moment of flexure, the size of control and the size of control moment in conjunction with the bearing below pipeline.
The utility model utilizes pump or air compressor to provide hyperbaric environment for pipe flange bindiny mechanism, electric heater unit is utilized to provide hot environment for pipe flange, the test in many group temperature and pressure situations can be done, can measure flange be connected to high-temperature and high-pressure conditions bear Moments effect under slip.The utility model is applicable to liquid medium and gas medium.The utility model accurately can check out whether Flange joint leaks, measures slip.The utility model leak tested accuracy rate is high, all has stronger directive significance to scientific research and engineering.
Accompanying drawing explanation
Fig. 1 is the structural representation of the compactedness test macro of high-temperature pipe flange under the effect of this Moments.
In figure: 1-pump, 2-valve, 3-vent valve, the left pipeline of 4-, 5-electric heater unit, 6-flange, 7-liquid crystal control panels, 8-load support, 9-hydraulic loading device, 10-loading arm, 11-leak hunting cavity, 12-imported valve, 13-pad, the right pipeline of 14-, 15-blind plate, 16-electric heater electricity cabinet, 17-bearing, 18-underflow opening valve, 19-underflow opening valve, 20-temperature sensor, 21-pressure transducer, 22-temperature sensor, 23-pressure transducer, 24-computing machine.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the compactedness test macro of high-temperature pipe flange under a kind of Moments effect, it comprises left pipeline 4, right pipeline 14, and connect the flange 6 of left pipeline 4 and right pipeline 14, described flange 6 is connected by bolt, and adopts pad 13 to seal, and left pipeline 4, right pipeline 14, flange 6 form flange cavity to be measured, described left pipeline 4 is provided with vent valve 3, and described right pipeline 14 is provided with underflow opening valve 18;
Described left pipeline 4 is connected with pump 1 by valve 2, and described right pipeline 14 welds with blind plate 15; Be provided with in described flange cavity to be measured temperature sensor 22, pressure transducer 23, by electric heater electricity cabinet 16 control electric heater unit 5, the temperature of medium in flange cavity to be measured monitored by this temperature sensor 22, the pressure in flange cavity to be measured measured by this pressure transducer 23, and this electric heater unit 5 can heat medium in flange cavity to be measured;
Described flange 6 is outside equipped with flange leakage mechanism for testing, described flange leakage mechanism for testing comprises the cavity 11 that leaks hunting surrounded by the wall that leaks hunting, the described wall that leaks hunting is provided with imported valve 12, underflow opening valve 19, imported valve 12, underflow opening valve 19 not only can be vented, and can be used for input or get rid of medium; Be provided with temperature sensor 20, pressure transducer 21 in the described cavity 11 that leaks hunting, this temperature sensor 20, pressure transducer 21 can measure the temperature and pressure of cavity 11 medium of leaking hunting;
Described system also comprises Moments load maintainer, described Moments load maintainer comprises the hydraulic loading device 9 controlled by liquid crystal control panels 7, the extension bar of described hydraulic loading device 9 connects as one with loading support 8, described loading support 8 is provided with loading arm 10, described hydraulic loading device 9 can provide the power of arbitrary size in range, described loading arm 10 contacts with left pipeline 4, right pipeline 14, loading arm 10 can move left and right on loading support 8, with bearing 17 acting in conjunction, provide the moment of flexure of dissimilar, different size.
In order to ensure the accuracy measured, described left pipeline 4, right pipeline 14 are provided with bearing 17.
Described pump 1, for being transported in flange cavity to be measured by medium (liquid or gas), forms hyperbaric environment in flange cavity to be measured, and the pipeline of flange cavity to be measured is provided with valve 3, for exhaust when being filled with medium in flange cavity to be measured; Described electric heater 5 is for rising to a certain temperature by medium temperature, and the heating dynamics of electric heater 5 controls by electric heater electricity cabinet 16.Temperature sensor 22 and pressure transducer 23 is provided with, temperature, the pressure of Real-Time Monitoring flange cavity medium to be measured in flange cavity to be measured.Blind plate 15 is welded on right pipeline 14 end, its good sealing effect, and electric heater unit 5 is installed and ensured good seal.
Outside flange 6, be arranged with the cavity 11 that leaks hunting, the pressure of cavity 11 medium of leaking hunting can be affected after leaking out during medium is by flange cavity to be measured, thus reflect mass change or the volume change of cavity 11 medium of leaking hunting; Be provided with temperature sensor 20 and pressure transducer 21 in the described cavity 11 that leaks hunting, the temperature and pressure of cavity 11 medium of leaking hunting can be measured; The described cavity 11 that leaks hunting is provided with imported valve 12, underflow opening valve 19, and underflow opening valve 19 is for being filled with medium, and when being filled with medium and being liquid medium, imported valve 12 can be vented, and underflow opening valve 19 to leak hunting cavity 11 medium for pressure release or eliminating; The volume of cavity 11 of leaking hunting can utilize imported valve 12, underflow opening valve 19 to be measured the volume of the cavity that leaks hunting by drainage.
A hydraulic loading device 9 is fixed with above the pipeline of flange cavity to be measured, hydraulic loading device 9 applies moment of flexure by the pipeline (left pipeline, right pipeline) at the loading support 8 pairs of flange two ends welded together with its extension bar, the liquid crystal control panels 7 that hydraulic loading device 9 can be carried by it controls, and applies the load in any range; Described loading support 8 is provided with loading arm 10, and described loading arm 10 contacts with left pipeline 4, right pipeline 14; Loading arm 10 can move left and right on loading support 8, and loading arm 10 and bearing 17 acting in conjunction on pipeline, provide dissimilar moment of flexure.
Described loading arm 10 can move left and right outside to bearing 17 on loading support 8, loads dissimilar moment of flexure.Described loading arm 10 is symmetrical or asymmetric, can provide dissimilar moment of flexure.
Signal can be delivered in computing machine 24 and show by temperature sensor 20, pressure transducer 21, temperature sensor 22 and pressure transducer 23, also can be delivered in single-chip microcomputer and show.
Work process of the present utility model:
(1) under Moments effect high-temperature pipe flange the work of compactedness test macro before, computing machine 24 is started shooting stand-by, the on off state of check valve 2, vent valve 3, underflow opening valve 18, imported valve 12, underflow opening valve 19; If medium is liquid in flange cavity to be measured, is then filled with identical testing liquid under 11 original states in the cavity that leaks hunting, and records initial working temperature and pressure; If be gaseous medium in flange cavity to be measured, be then filled with identical gas to be measured under original state in the cavity 11 that leaks hunting, and record initial working temperature and pressure, simultaneously hydraulic loading device 9 hot standby;
(2), when under Moments effect, the compactedness test macro of high-temperature pipe flange works, medium is filled with flange cavity to be measured by pump 1, shows flange empty cavity pressure to be measured, pressure is adjusted to testing pressure by pressure transducer 23; Open electric heater unit 5, show flange empty cavity temperature to be measured by means of temperature sensor 22, medium temperature is adjusted to and treats testing temperature, under this worst hot case, the pressurize sufficiently long time, measured in real time by computing machine 24 pairs of slips.
Under worst hot case (temperature and pressure to be measured), the pressurize sufficiently long time, leak hunting data that the temperature sensor 20 of cavity 11 and pressure transducer 21 record if do not met the temperature volume Changing Pattern of equation of gaseous state or liquid, if namely flange cavity interior conduit to be measured pressure transducer 23 registration diminishes in the process, pressure transducer 21 registration of leaking hunting in cavity becomes large, then can judge to leak.When judging flange leakage to be measured, calculating slip can be carried out as follows.
Particularly, slip can pass through following formulae discovery:
When leaking medium is gas, the gaseous mass of leaking hunting in cavity is:
At the end of leaking hunting:
Wherein: the volume of the cavity that leaks hunting is V, and in measuring intervals of TIME t, the pressure and temperature leaked hunting in cavity is by p
1, T
1become p
2, T
2, M is medium molecule quality, and R is gaseous state constant, m
1for initial state quality, m
2for final states quality.
Gaseous mass change in time interval t is as follows:
Wherein Δ m is of poor quality.
The volumetric leak rate of the gas leaked is:
Wherein Δ V is volume differences, and L is volume change.
Can directly calculate with formula (4) if medium is liquid.
Here be adopt volume change to represent slip, mass change can certainly be adopted to represent slip, and namely Δ m/t, repeats no more here.
The utility model can not only check out whether flange leaks, and the data by testing draw mass change or the volume change of medium.
Claims (6)
1. the compactedness test macro of high-temperature pipe flange under a Moments effect, it comprises left pipeline, right pipeline, and connects the flange of left pipeline and right pipeline, and described flange adopts pad to seal, left pipeline, right pipeline, flange form flange cavity to be measured, it is characterized in that:
Described left pipeline is connected with pump by valve, and described right pipeline welds with blind plate; Be provided with in described flange cavity to be measured temperature sensor, pressure transducer, by electric heater electricity cabinet control electric heater unit;
Described flange is outside equipped with flange leakage mechanism for testing, and described flange leakage mechanism for testing comprises the cavity that leaks hunting surrounded by the wall that leaks hunting, described in the wall that leaks hunting be provided with imported valve, underflow opening valve, described in leak hunting in cavity and be provided with temperature sensor, pressure transducer;
Described system also comprises Moments load maintainer, and described Moments load maintainer comprises hydraulic loading device, and described hydraulic loading device left pipeline and right pipeline applies power, the pipeline of flange connections forms moment of face, moment size energy free adjustment.
2. the compactedness test macro of high-temperature pipe flange under Moments effect as claimed in claim 1, it is characterized in that: the extension bar of described hydraulic loading device is integrated with loading support welding, described hydraulic loading device can provide the power of arbitrary size in range, described loading support is provided with loading arm, described loading arm and left pipeline, right tube contacts.
3. the compactedness test macro of high-temperature pipe flange under Moments effect as claimed in claim 2, is characterized in that: described hydraulic loading device is controlled by liquid crystal control panels.
4. the compactedness test macro of high-temperature pipe flange under Moments effect as claimed in claim 2, it is characterized in that: described loading arm can move left and right on loading support, and the bearing acting in conjunction on this loading arm and left and right pipeline, the moment of flexure of dissimilar, different size is provided.
5. the compactedness test macro of high-temperature pipe flange under Moments effect as claimed in claim 1, it is characterized in that: described left pipeline is provided with vent valve, described right pipeline is provided with underflow opening valve.
6. the compactedness test macro of high-temperature pipe flange under Moments effect as claimed in claim 1, is characterized in that: described electric heater unit is placed in the middle part of flange cavity to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734445.8U CN204314027U (en) | 2014-11-28 | 2014-11-28 | The compactedness test macro of high-temperature pipe flange under Moments effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734445.8U CN204314027U (en) | 2014-11-28 | 2014-11-28 | The compactedness test macro of high-temperature pipe flange under Moments effect |
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| Publication Number | Publication Date |
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| CN204314027U true CN204314027U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420734445.8U Expired - Fee Related CN204314027U (en) | 2014-11-28 | 2014-11-28 | The compactedness test macro of high-temperature pipe flange under Moments effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181267A (en) * | 2015-07-17 | 2015-12-23 | 武汉工程大学 | Device for testing leakage rate of bolted flange connection system |
-
2014
- 2014-11-28 CN CN201420734445.8U patent/CN204314027U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181267A (en) * | 2015-07-17 | 2015-12-23 | 武汉工程大学 | Device for testing leakage rate of bolted flange connection system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20161128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |