CN203929365U - The fire-resistant pattern test unit of a kind of valve - Google Patents
The fire-resistant pattern test unit of a kind of valve Download PDFInfo
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- CN203929365U CN203929365U CN201420209811.8U CN201420209811U CN203929365U CN 203929365 U CN203929365 U CN 203929365U CN 201420209811 U CN201420209811 U CN 201420209811U CN 203929365 U CN203929365 U CN 203929365U
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
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Abstract
The utility model relates to the fire-resistant pattern test unit of a kind of valve, and constant pressure source provides the flowing water of the desired relevant pressure of type approval test to carry to valve to be measured; Nozzle-regulation mechanism in body of heater regulates the relative position between jet expansion and valve to be measured, can not only make valve to be measured be subject to uniform high-temp combustion heating, and the high-temp combustion temperature that can also meet the valve to be measured of different model all can reach requirement; Spray system is the direct valve spraying cooling to be measured to high temperature in body of heater, reaches the object of rapid cooling.This utility model has met the needed test condition of type approval test of different size valve, and warranty test condition is uniform and stable all the time, makes the result of type approval test test more accurately, reliably.
Description
Technical field
The utility model relates to the test unit of valve, more particularly, relates to the fire-resistant pattern test unit of a kind of valve.
Background technology
The production procedure complexity of petrochemical industry, and in process of production use starting material, semi-manufacture, finished product and various auxiliary material be mostly flammable and explosive substance, very easily initiation fire and explosion accident.And be used in the valve of some volatile firer's condition, and owing to there being the potential danger of breaking out of fire, often it is carried out to special design, make valve suffer after the baked wheaten cake of certain hour, still to there is certain sealing property and operating performance.The fire performance of valve is exactly the ability that valve keeps normal work in thermal-flame, and it is the important indicator of weighing valve security performance.Aspect the fire performance of measurement valve, fire-resistant type approval test is the unique method of determining its fire performance.Both at home and abroad petroleum chemical industry is paid much attention to the fire-resistant type approval test of valve, and formulated relevant standard always.
According to different use occasions and product function, the fire-resistant pattern testing standard of valve is also different, as American Petroleum Institute (API) has formulated the standard A PI STD607 for soft valve seat 1/4 rotary valve door, for the standard A PI SPEC6FA of pipeline valve and well head set-up, and for the standard A PI SPEC6FD of non-return valve, ISO (International Standards Organization) has been formulated the standard ISO 10497 for various valve refractory tests, and China has also formulated for various valve refractory test system and method required standard JB/T6899-1993 " fire testing of valve ".
According to the difference of pressure source, JB/T6899-1993 has recommended two cover valve fire safe type formula pilot systems, and as shown in figure 14, accompanying drawing 14a is for using pressurized air as pressure source, and accompanying drawing 14b uses pump as pressure source, description of symbols in figure:
1 '-pressure source; 2 '-pressure-regulating valve; 3 '-Pressure Relief Valve; 4 '-water container; 5 '-water-level gauge (or similar device); 6 '-feed water valve; 7 '-stop valve; 8 '-tensimeter; 9 '-resistance steam pipe; 10 '-chamber; 11 '-pet valve; 12 '-combustion vapour nozzle; 13 '-melting point bar; The thermopair of 14 '-measurement flame range temperature; The 15 '-tensimeter that is connected with pet valve lumen; The 16 '-Pressure Relief Valve that is connected with pet valve lumen; 17 '-stop valve; 18 '-vent valve; 19 '-condenser; 20 '-measuring container; 21 '-fuel supply valve.
The have following requirement of JB/T6899-1993 to the pilot system of recommending:
(1) pilot system should not make pet valve 11 ' bear the applied external force that may affect test findings.
(2) as the inside nominal diameter D of pet valve 11 '
nwhen < 50mm, the on the suction side pipeline inside nominal diameter being directly connected with pet valve 11 ' should be not less than the half of pet valve 11 ' inside nominal diameter; As the inside nominal diameter D of pet valve 11 '
nthe on the suction side pipeline inside nominal diameter being directly connected with pet valve 1 ' when>=50mm should be not less than 25mm.
(3) apart from pet valve 11 ' at least the pipeline section of 150mm all should be in flame range.
(4) the inside nominal diameter D of pet valve 11 ' outlet side pipeline
nshould be between 15mm to 25mm, its setting should have certain gradient.
(5) between pet valve 11 ' and chamber 10 ' wall, should at least stay the horizontal clearance of 150mm, chamber 10 ' top is at least than pet valve 11 ' the high 150mm in top.
(6) should make valve rod and passage all be in horizontal level when installation test valve 11 ', but non-return valve 7 ' should be installed by its normal operating position.
(7) water is as test(ing) medium.
(8) use gas as test fuel.
(9) in process of the test, can adjust the equipment except pet valve 11 ' in pilot system, to ensure that temperature and pressure value reaches regulation.
(10) melting point bar 13 ' is made with carbon steel, and as shown in figure 15, thermopair 14 ' is placed at the center of melting point bar 13 ', and the connecting thread of melting point bar 13 ' and thermopair intubate 131 ' is by the regulation of GB7306.For the pet valve 11 ' of inside nominal diameter DN≤150mm, two melting point bars 13 ' should be set, as shown in figure 16; For the pet valve 11 ' of inside nominal diameter DN > 150mm, three melting point bars 13 ' should be set, as shown in figure 17.
(11) least count of thermopair 14 ' should be less than or equal to 1 DEG C.Measure the setting of flame range temperature thermopair 14 ' as shown in Figure 16 and Figure 17.
(12) precision of tensimeter 8 ' is not less than 1.5 grades, and tested force value should be in 30%～70% scope of instrument range.
(13) size of measuring container 20 ' is wanted suitably, so that the medium of collecting and leaking out by pet valve 11 ' when metering experiment.
(14) when the set-pressure of Pressure Relief Valve 16 ' is 20 DEG C of pet valves 1.5 times of maximum allowable working pressure.
The fire-resistant pattern pilot project of valve comprises high-potting, low pressure test (LPT) and service test.High-potting is that test valve pressure is elevated to test pressure, and specifying to carry out the baked wheaten cake of certain hour by standard, the data of main test comprise between main combustion period two parameters of outside leakage rate (outside leakage mainly refers to by the leakage at valve flange junction, connection of thread and valve stem seal place etc.) between the leakage rate by valve seat (internal leakage), main combustion period.Low pressure test (LPT) is general only for the valve that equals and be less than PN100,600 pounds of levels, low pressure test (LPT) is carried out after high-potting, be burn finish to valve force cooling after, the valve leakage amount recording under the low pressure test (LPT) pressure specifying in standard and the leakage quantity that leaks, and valve is cooled to three parameters such as 100 DEG C of needed times.Service test is carried out after high-potting, has carrying out after low pressure test (LPT) of low pressure test (LPT) requirement, and service test is under the test pressure of regulation, the outside leakage rate by valve open to full open position measurement valve.
According to the process of the fire-resistant type approval test of valve and requirement, the system of recommending in JB/T6899-1993 has following problem not to be resolved:
(1) applicability of constant pressure source system
For process of the test, JB/T6899-1993 requires: burn and the cooling whole high-potting stage all can keep force value comprising, allowing its maximal value is once that the instantaneous pressure of test pressure 50% loses, but should in 2min, recover test pressure.
In the pilot system taking pump as pressure source that JB/T6899-1993 recommends, mainly provide with single pump, single pipeline and keep testing required pressure.According to testing requirements, the fire-resistant type approval test of valve had both needed to carry out high-potting, need again to carry out low pressure test (LPT), according to the model specification of test valve, high-potting pressure can reach 32MPa, only 0.2MPa of low pressure test (LPT) pressure, only adopt a pipeline, as very high in the pressure ratio of supercharge pump, can provide high-potting required pressure, but the constant pressure of the pilot system that is hard to keep in the time carrying out low pressure test (LPT), in addition, the pipeline that constant pressure source system is selected, tensimeter, valve and safety valve all should be configured according to high-potting demand, not only waste resource but also cannot ensure the requirement of " tested force value should in 30%～70% scope of manometer range ", as low in supercharge pump pressure ratio, in the requirement while that ensures low pressure test (LPT) constant pressure, but can not provide high-potting required pressure, the maximum leakage amount of pilot system is also limited.Meanwhile, the effect of resistance steam pipe is that the cooling effect of pet valve 11 ' entrance point liquid is reduced to minimum, and major part is U-shaped tubular construction, and the cooling power of U-shaped pipe is also limited.
(2) firing chamber is specifically arranged
For combustion process, JB/T6899-1993 requires: after igniting, require the medial temperature of two thermopairs 14 ' in 2min, to reach 760 DEG C, in the time of baked wheaten cake phase remainder, medial temperature should be between 760～980 DEG C, and the reading of two thermopairs all must not be lower than 705 DEG C; The medial temperature of the thermopair in melting point bar 13 ' reaches 650 DEG C after igniting in 15min, in the time of burning district remainder, medial temperature must not be lower than this temperature, and in each melting point bar, the reading of thermopair must not be lower than 565 DEG C.
For the fire-resistant type approval test of valve, pressure system and combustion system are most important two parts, in JB/T6899-1993, only require the temperature requirement in concrete layout and the combustion process of each thermopair, but how to arrange and just can reach this temperature requirement for firing chamber, do not provide concrete scheme.
(3) force cooling provision
For low-temperature test and service test, in JB/T6899-1993, specify to need first valve to be tested cooling, complete after high pressure bonfire test, with forcing cooling or naturally cooling method to be cooled to hull-skin temperature to be equal to or less than 100 DEG C pet valve 11 ', and then carrying out other pilot project.
Valve, after the baked wheaten cake of 30min, for the valve of soft seal valve seat, causes the softening fusing even completely of soft seal valve seat because temperature raises in baked wheaten cake process, and in valve seat distortion and fusion process, internal leakage easily appears in valve.In baked wheaten cake process, because causing flange connections in valve body, valve body screw thread junction and valve stem packing place equipotential to be equipped with, the temperature distortion meeting of valve housing, internals and securing member etc. there is the possible of external leakage.The water that accumulates in addition valve lumen in baked wheaten cake process is vaporized and be there will be pressure rise phenomenon because of the rising of temperature, Pressure Relief Valve also not pressure release in the situation that each potential leak that leaks likely there is external leakage phenomenon.
As adopt the cooling mode of nature, valve is cooled to 100 DEG C to need below long time, therefore, can only adopt pressure cooling, but valve is through burning after 30min, there is the possibility of valve body leakage, explosion, therefore, testing crew can not be near pet valve door, now, adopt anything to force cooling method, JB/T 6899-1993 does not provide concrete solution.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of improved valve fire-resistant pattern test unit.
The utility model solves the technical scheme that its technical matters adopts: construct the fire-resistant pattern test unit of a kind of valve, comprise be connected with valve downstream to be measured with provide to described valve to be measured the constant pressure source of constant pressure flowing water, for accommodating described valve to be measured and to described valve to be measured carry out flame combustion heating firing chamber, be arranged on and in described firing chamber, the valve described to be measured after heating carried out to cooling spray system and be connected to collect the first gathering-device of the flowing water that described valve to be measured leaks out downstream with the downstream of described valve to be measured;
Described firing chamber comprises the body of heater that is provided with opening, is formed with the burning chamber of accommodating described valve to be measured on described body of heater;
In described body of heater, be provided with the some fuel elements that are evenly arranged in described valve periphery to be measured; Described fuel element comprise nozzle and with the supporting nozzle-regulation mechanism of described nozzle;
Described nozzle comprises the jet expansion for flame, and described nozzle-regulation mechanism regulates the relative position between described jet expansion and described valve to be measured.
Implement the fire-resistant pattern test unit of valve of the present utility model, there is following beneficial effect: the constant pressure source in the utility model provides the flowing water of the desired relevant pressure of type approval test to carry to valve to be measured; Nozzle-regulation mechanism in body of heater regulates the relative position between jet expansion and valve to be measured, can not only make valve to be measured be subject to uniform high-temp combustion heating, and the high-temp combustion temperature that can also meet the valve to be measured of different model all can reach requirement.This utility model has met the needed test condition of type approval test of different size valve, and warranty test condition is uniform and stable all the time, makes the result of type approval test test more accurately, reliably.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the schematic diagram of the fire-resistant pattern test unit of the valve in the utility model embodiment;
Fig. 2 is the structural representation of firing chamber;
Fig. 3 is the schematic top plan view of body of heater in Fig. 2, fuel element;
Fig. 4 is the assembling schematic diagram of sample platform in Fig. 3, fixed underpan;
Fig. 5 is the structural representation of nozzle;
Fig. 6 a is the front view of nozzle-regulation mechanism in Fig. 3, and Fig. 6 b is the left view of nozzle-regulation mechanism in Fig. 3, and Fig. 6 c is the vertical view of nozzle-regulation mechanism in Fig. 3;
Fig. 7 is the fixed underpan structural representation of nozzle-regulation mechanism in Fig. 6;
Fig. 8 is the structural representation of the turning axle of nozzle-regulation mechanism in Fig. 6;
Fig. 9 is the structural representation of the rotating disc of nozzle-regulation mechanism in Fig. 6;
Figure 10 is the structural representation of the runing rest of nozzle-regulation mechanism in Fig. 6;
Figure 11 is the gas pipeline structure schematic diagram of combustion gas air-channel system;
Figure 12 is the structural representation of the air path pipeline of combustion gas air-channel system;
Figure 13 is the structural representation of the spray piping of spray system;
Figure 14 a is the fire-resistant pattern pilot system of the valve systematic schematic diagram of pressurized air as pressure source in background technology; Figure 14 b is the fire-resistant pattern pilot system of the valve systematic schematic diagram of pump as pressure source in background technology;
Figure 15 is the assembling schematic diagram of melting point bar and thermopair;
Figure 16 is the schematic diagram of arranging that two melting point bars are set on pet valve;
Figure 17 is the schematic diagram of arranging that three melting point bars are set on experiment valve.
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Fig. 1 and Figure 13, the fire-resistant pattern test unit of valve in preferred embodiment of the utility model comprise be connected with valve to be measured 10 upstreams with provide to valve 10 to be measured the constant pressure source 20 of constant pressure flowing water, for accommodating valve 10 to be measured and treat side valve door 10 carry out flame combustion heating firing chamber 30, be arranged on that firing chamber 30 is interior carries out cooling spray system 40 and be connected to collect the first gathering-device 50 of the flowing water that valve 10 to be measured leaks out downstream with the downstream of valve 10 to be measured the valve to be measured 10 after heating.
As shown in Figure 1, in certain embodiments, constant pressure source 20 comprises water source 11, flow measurement device 12, filtrator 13, low-pressure charging loop 14, high pressure boost-up circuit 15 and switching device shifter 16.Water source 11 is for being equipped with the water tank of water, and flow measurement device 12 is the liquid level rule on water tank, and to measure the volume of the water flowing out from water tank, flow measurement device 12 also can be the liquid level sensor being located on water tank.In other embodiments, water source 11 also can be the water supply installations such as running water pipe, and 12 of flow measurement devices can be the flowmeter being arranged on running water pipe.
In certain embodiments, filtrator 13 is arranged between the outlet at water source 11 and low-pressure charging loop 14, high pressure boost-up circuit 15, be filled into the large granular impurity in the water of outflow, thereby improve serviceable life and the performance of low-pressure charging loop 14, high pressure boost-up circuit 15.Certainly, ensureing that under the prerequisite that water quality is good, filtrator 13 also can be cancelled.
Low-pressure charging loop 14 is connected between water source 11 and valve to be measured 10 so that the flowing water of low pressure test (LPT) pressure to be provided to valve 10 to be measured.In the present embodiment, low-pressure charging loop 14 mainly meets the valves test of the following test pressure of 7.5MPa.Low-pressure charging loop 14 comprises low pressure pipeline 141, be arranged on low-pressure charging pump 142 on low pressure pipeline 141, be arranged on the first non-return valve 143 and the low pressure measurement mechanism 144 in low-pressure charging pump 142 downstreams.Low-pressure charging pump 142 is for being adjusted to the water at water source 11 the required test pressure of low pressure test (LPT) and carrying to valve 10 to be measured; the first non-return valve 143 is protected low-pressure charging pump 142; there is pressure holding function simultaneously; low pressure measurement mechanism 144, for the force value of the water measuring low-pressure charging pump 142 and export, ensures that hydraulic pressure pressure is in the test pressure requiring.
Low pressure measurement mechanism 144 comprises the first tensimeter 145, the second tensimeter 146 that are arranged on low pressure pipeline 141, between the first tensimeter 145 and low pressure pipeline 141, be provided with between the first needle-valve 147, the second tensimeters 146 and low pressure pipeline 141 and be provided with the second needle-valve 148.The first tensimeter 145, the second tensimeter 146 are for being not more than two tensimeters of low pressure test (LPT) upper pressure limit and different measuring range, and in the present embodiment, the measurement range of the first tensimeter 145 is 0～1MPa, and the measurement range of the second tensimeter 146 is 0～6MPa; Be mainly in the time meeting different tests pressure, the indicating range of gauge hand is between the 25%-75% of tensimeter full scale.
High pressure boost-up circuit 15 is connected between water source 11 and valve to be measured 10 so that the flowing water of high-potting pressure to be provided to valve 10 to be measured.In the present embodiment, high pressure boost-up circuit 15 mainly meets the valves test of 7.5MPa～40MPa test pressure.High pressure boost-up circuit 15 comprises pressure piping 151, be arranged on high-pressure booster 152 on pressure piping 151, be arranged on the second non-return valve 153, the high-pressure measurement mechanism 154 in high-pressure booster 152 downstreams.High-pressure booster 152 is for being adjusted to the water at water source 11 the required test pressure of high-potting and carrying to valve 10 to be measured, high-pressure measurement mechanism 154, for the force value of the water measuring high-pressure booster 152 and export, ensures that hydraulic pressure pressure is in the test pressure requiring.
High-pressure measurement mechanism 154 comprises the 3rd tensimeter 155, the 4th tensimeter 156 that are arranged on pressure piping 151, between the 3rd tensimeter 155 and pressure piping 151, be provided with between the 3rd needle-valve 157, the four tensimeters 156 and pressure piping 151 and be provided with the 4th needle-valve 158.The 3rd tensimeter 155, the 4th tensimeter 156 are for being not more than two tensimeters of high-potting upper pressure limit and different measuring range, in the present embodiment, the measurement range of the 3rd tensimeter 155 is 0～25MPa, and the measurement range of the second tensimeter 146 is 0～60MPa; Mainly that while meeting different tests pressure, the indicating range of gauge hand is between the 25%-75% of tensimeter full scale.
Switching device shifter 16 is arranged on the upstream of low-pressure charging loop 14, high pressure boost-up circuit 15, the downstream at water source 11, switching device shifter 16 between the first state and the second state, switch so that water source 11 respectively to low-pressure charging loop 14, high pressure boost-up circuit 15 supplies water, and provides flowing water to valve 10 to be measured respectively by low-pressure charging loop 14, high pressure boost-up circuit 15.Switching device shifter 16 comprises the first ball valve 161, the second ball valve 162, the first ball valve 161 is arranged on low pressure pipeline 141 and is positioned at low-pressure charging pump 142 upstreams, the second ball valve 162 is arranged on pressure piping 151 and is positioned at high-pressure booster 152 upstreams, switching device shifter 16 is in the time of the first state, the first ball valve 161 is opened, the second ball valve 162 is closed, and works in low-pressure charging loop 14; Switching device shifter 16 is in the time of the second state, and the first ball valve 161 is closed, and the second ball valve 162 is opened, and high pressure boost-up circuit 15 is worked.
As shown in Figures 2 and 3, in certain embodiments, firing chamber 30 comprises body of heater 31, bell 32, and body of heater 31 is provided with opening 311, and bell 32 covers on opening 311, and preferably, opening 311 is located at the upside of body of heater 31.Body of heater 31 is piled up formation for light aluminium refractory brick, is formed with the burning chamber 312 of accommodating valve to be measured 10 on body of heater 31.Firing chamber 30 also comprises sample platform 33, the hollow sting 34 of being located at sample platform 33 middle parts be located in burning chamber 312, be located in sample platform 33 and be evenly arranged in six fuel elements 35 of the periphery of hollow sting 34, the combustion gas air-channel system 36 of combustion gas be provided and the air path system 37 of combustion-supporting gas is provided to fuel element 35 to fuel element 35.Understandably, in other embodiments, also can remove sample platform 33, hollow sting 34, fuel element 35 are set directly to the bottom of body of heater 31.Light aluminium refractory brick accumulation of heat is little, heat radiation less thereby good heat preservation performance, quick heating; when test, protect body of heater 31 hull-skin temperatures unlikely too high; can control body of heater 31 hull-skin temperatures and be less than or equal to 60 DEG C, body of heater 31 bottom temps are less than or equal to 60 DEG C, and top temperature is less than or equal to 60 DEG C.
Sample platform 33 is located at the bottom of burning chamber 312, hollow sting 34 can be connected to form by some poles, valve 10 to be measured can ensure valve 10 to be measured outside surface after being placed on hollow sting 34 is as far as possible many exposes burned flame heating, and the large I of hollow sting 34 is made according to the specification of valve 10 to be measured.
Meanwhile, as shown in FIG. 16 and 17, according to testing standard by thermopair and corresponding the navigating on valve 10 to be measured of calorimetric piece, the temperature when being used for measuring valve 10 to be measured and heating.
As shown in Figure 4, in sample platform 33, be interval with respectively some the first lockholes 331 along direction in length and breadth, install and regulate fuel element 35 in sample platform 33 position in direction in length and breadth for fuel element 35.Preferably, the first lockhole 331 on vertical and horizontal is equidistantly arranged respectively, and in other embodiments, the first adjacent lockhole 331 also can be only identical in the spacing laterally or longitudinally.
Again as shown in Figures 2 and 3, the quantity of fuel element 35 can increase and decrease according to the size of valve 10 to be measured, can ensure that valve 10 to be measured is heated to test temperature.Fuel element 35 comprise nozzle 351 and with the supporting nozzle-regulation mechanism 352 of nozzle 351, nozzle-regulation mechanism 352 regulates the relative position between jet expansion 3511 and valve to be measured 10.
As shown in Figure 5, nozzle 351 comprises the nozzle inlet 3512 being communicated with for the jet expansion 3511 of flame, with jet expansion 3511, preferably, nozzle inlet 3512 comprises the air inlet 3513 for accessing the combustion-supporting gases such as air and accesses the fuel gas inlet 3514 of fuel gas source.
As shown in Figure 6, in certain embodiments, nozzle-regulation mechanism 352 comprises the fixed underpan 353 that is arranged on rotationally in sample platform 33, is arranged on runing rest 354 on fixed underpan 353, is arranged on rotationally turning axle 355 on runing rest 354, is located at the nozzle fixed mount 356 on turning axle 355 and is arranged on turning axle 355 and is circumferentially positioned at the rotating disc 357 on turning axle 355.Nozzle 351 is arranged on nozzle fixed mount 356 and stretches to valve 10 to be measured, and fixed underpan 353 rotates and regulates nozzle 351 rotational angle in the horizontal direction, nozzle fixed mount 356 to rotate the position of adjusting nozzle 351 in short transverse.
As shown in Fig. 4 and Fig. 7, on the two opposite sides of fixed underpan 353, be respectively equipped with the first regulating tank 3531 of circular arc, fixed underpan 353 wears the first regulating tank 3531 by first locking part such as bolt, screw and coordinates and be installed in sample platform 33 with the first lockhole 331, preferably, in sample platform 33, the arc diameter of the spacing laterally or between longitudinal two adjacent the first lockholes 331 and the first regulating tank 3531 is suitable.The first regulating tank 3531 of two relative circular arcs is concentric, and fixed underpan 353 rotates to regulate the rotational angle of jet expansion 3511 horizontal directions according to the arcuate directions of the first regulating tank 3531, then the first locking part locking is carried out to rotational angle location.Understandably, in other embodiments, first regulating tank 3531 also can be only set on fixed underpan 353, rotating shaft is set at the center of the first regulating tank 3531 to be arranged on fixed underpan 353 in sample platform 33 rotationally, fixed underpan 353 arrives suitable rotational angle around the center rotating of the first regulating tank 3531, then the first locking part locking is carried out to rotational angle location.
As shown in Figure 5, preferably, turning axle 355 is horizontally disposed with, and turning axle 355 is provided with keyway 3551, and keyway 3551 is provided with axle key.Nozzle fixed mount 356 is provided with installs the mounting groove 3561 of nozzle 351 and the shaft hole with turning axle 355 corresponding matching, shaft hole side is provided with the groove corresponding with axle key, nozzle fixed mount 356 covers are set to the circumferential location of realizing turning axle 355 and nozzle fixed mount 356 on turning axle 355, and nozzle fixed mount 356 rotates and regulates the position of nozzle 351 in short transverse on runing rest 354.
In certain embodiments, turning axle 355 also comprises the square shaft part 3552 of being located at its one end, rotating disc 357 is provided with the square opening 3571 coordinating with square shaft part 3552, square opening 3571 covers are set in square shaft section 3552 and realize the circumferentially fixing of rotating disc 357 and turning axle 355, and nozzle fixed mount 356 rotates with the rotation of rotating disc 357.On rotating disc 357, be also provided with second center of arc of regulating tank 3572, the second regulating tanks 3572 and the axis coinciding of turning axle 355 of circular arc.Runing rest 354 is provided with second lockhole 3541 corresponding with the second regulating tank 3572, wearing the second regulating tank 3572 by second locking part such as bolt, screw is locked on the second lockhole 3541 rotating disc 357 in circumferential location, also be fixed up in the turned position of nozzle fixed mount 356 simultaneously, regulate the position of jet expansion 3511 short transverses.
Understandably, in other embodiments, the regulating tank of arc also can be set on runing rest 354, the lockhole corresponding with regulating tank position on runing rest 354 is set on nozzle fixed mount 356, it is sealed that the second locking part wears lockhole on regulating tank and the runing rest 354 on runing rest 354, in the time that nozzle fixed mount 356 turns to suitable angle position with the second locking part by nozzle fixed mount 356 and runing rest 354 locking positionings.
By the adjusting of nozzle-regulation mechanism 352, and the position adjustments of nozzle-regulation mechanism 352 in sample platform 33, can realize nozzle 351 jet expansion 3511 the position adjustments of direction, short transverse in length and breadth and in the horizontal direction turned position regulate.
Combustion gas air-channel system 36 comprises the gas pipeline 361 that the gas source of flammable combustion gas is provided and flammable combustion gas is transported to fuel gas inlet 3514, and flammable combustion gas can be the combustion gas such as rock gas or coal gas.Preferably, gas pipeline 361 comprises the air intake opening 362 being connected with gas source and six gas outlets 363 that are connected with six fuel gas inlet 3514, and between air intake opening 362 and gas outlet 363, by a threeway 364,365 conversions are connected with two four-ways.In certain embodiments, gas outlet 363 is communicated with fuel gas inlet 3514 by pipelines such as flexible pipes.
Air path system 37 comprises fan blower and air path pipeline 371, and air path pipeline 371 comprises the blast orifice 372 being connected with fan blower and six air outlets 373 that are connected with six air inlets 3513, and fan blower air blast provides appropriate air or oxygen.Flammable combustion gas and combustion-supporting gas be in the interior mixing of nozzle 351, and what can make that inflammable gas burns at jet expansion 3511 is more abundant, and what make that temperature of combustion raises is faster.
In certain embodiments, spray system 40 is arranged on the downside of bell 32, and certainly, spray system 40 also can be arranged on the inner side of body of heater 31.Spray system 40 comprises the circular spray tube road 41 arranging along the border of bell 32, spray piping 41 is provided with water inlet 42 and some shower nozzles 43, water inlet 42 is connected with cooling water source with to the interior injection chilled water of spray piping 41, shower nozzle 43 is intervally arranged along spray piping 41, the water in spray piping 41 is drenched to valve 10 to be measured cooling valve 10 to be measured simultaneously.Understandably, spray piping 41 also can be latticed bell 32 downsides that are arranged on, and shower nozzle 43 is evenly arranged on spray piping 41 sprays water cooling to valve 10 to be measured.
In certain embodiments, the first gathering-device 50 comprises collection conduit 51, the 5th needle-valve 52, the first refrigeratory 53 and the first collection container 54.Collection conduit 51 is connected with valve to be measured 10 downstreams, and the 5th needle-valve 52 and the first refrigeratory 53 are arranged in collection conduit 51, and the first collection container 54 is arranged on collection conduit 51 downstreams in order to collect the flowing water leaking.
The 5th needle-valve 52 is controlled the leakage switch of valve 10 to be measured, the first refrigeratory 53 converts liquid flowing water to and is discharged to the first collection container 54 leak the water of outflow or water vapour from valve 10 to be measured, and what ensure the water that leaks can not produce deviation because evaporation does not cause leakage rate.
In certain embodiments, between high pressure boost-up circuit 15, low-pressure charging loop 14 and valve to be measured 10, be also provided with the 6th needle-valve 171, vent valve 172, the second refrigeratory 173 and superpressure backflow gathering-device 174.Open or close the 6th needle-valve 171 to open or to cut off the water supply to valve 10 to be measured, conveniently firing chamber 30 is overhauled; Vent valve 172 is for the residual air of discharge line before supercharging; The second refrigeratory 173 is arranged on the downstream of low-pressure charging loop 14 and high pressure boost-up circuit 15, the upstream of firing chamber 30, so that the liquid flowing water of equilibrium temperature to be provided to valve 10 to be measured.
Superpressure backflow gathering-device 174 comprises low pressure collecting loop 175, high pressure collecting loop 176, the 3rd refrigeratory 177, the second collection container 178.
Low pressure collecting loop 175 comprises low pressure collection conduit 1751, is arranged on the 7th needle-valve 1752, the first safety valve 1753 in low pressure collection conduit 1751.High pressure collecting loop 176 comprises high pressure collecting pipeline 1761, is arranged on the 8th needle-valve 1762, the second safety valve 1763 on high pressure collecting pipeline 1761.The 7th needle-valve 1752 is applicable to 7.5MPa and following pipeline, the 8th needle-valve 1762 is applicable to pipeline more than 7.5MPa, the first safety valve 1753 is applicable to 7.5MPa and following pipeline, the second safety valve 1763 is applicable to pipeline more than 7.5MPa, the 7th needle-valve 1752 is opened under low-pressure charging test pressure, and the 8th needle-valve 1762 is opened under high pressure pressurized test pressure.
The 3rd refrigeratory 177 is arranged on the downstream in low pressure collecting loop 175, high pressure collecting loop 176, the second collection container 178 is arranged on the downstream of the 3rd refrigeratory 177, and the flowing water that the 3rd refrigeratory 177 discharges superpressure is cooled to liquid state and is discharged in the second collection container 178.
Preferably, the first refrigeratory 53, the second refrigeratory 173, the 3rd refrigeratory 177 adopt water recirculator, with better cooling collection.
Using the forged steel rising stem (RS.) of inside nominal diameter DN100, nominal pressure PN100, hard sealed flat gate valve as test valve 10 to be measured, by reference to the accompanying drawings principle and the process of the test of the fire-resistant pattern test unit of the valve in the present embodiment are described below:
According to the nominal pressure of valve 10 to be measured, according to relevant fire testing standard, determine the forged steel rising stem (RS.) of inside nominal diameter DN100, nominal pressure PN100, high-potting pressure 8.0MPa, the low pressure test (LPT) pressure 0.7MPa of hard sealed flat gate valve.
Before experiment, guarantee that all valves are in closed condition.Valve 10 to be measured is rotated to part open site, open the second ball valve 162, vent valve 172, the 6th needle-valve 171, the 5th needle-valve 52, the 3rd needle-valve 157, give system water supply deaeration.While being full of water in pipeline, close vent valve 172, the five needle-valves 52, start high-pressure booster 152, while being forced into 14MPa, stop high-pressure booster 152, whether check test device there is leakage, if do not leak, closes valve 10 to be measured and opens the 5th needle-valve 52.
Again open high-pressure booster 152, test pressure is adjusted to 8.0MPa, keep the stable of test pressure.Measure the leakage rate in the first collection container 54, and turned letter.
Open air path system 37 to combustion gas gas circuit air feed.
Open combustion gas gas circuit and allow gas source start air feed and jet expansion 3511 is lighted and treated side valve door 10 burning, heatings, between halfhour main combustion period, detect from start to finish flame range temperature.The temperature of thermopair and calorimetric piece is presented on display screen, the medial temperature of thermopair requires to reach 750 DEG C in igniting in latter two minutes, the medial temperature of calorimetric piece reaches 650 DEG C in igniting in latter 15 minutes, as do not reach requirement and the switch aperture of gas source should be increased, after main combustion period in keep flame range medial temperature at 750 DEG C～1000 DEG C, and between main combustion period, there is not the reading lower than 700 DEG C, the minimum average B configuration temperature of calorimetric piece remains on 650 DEG C, and there is not the temperature lower than 560 DEG C, for reaching temperature requirement, main combustion period can be extended to five minutes.
Between main combustion period, recorded order three pressure readings of tensimeter 155 and a temperature data for each thermopair every 30 seconds.
Burning reached after 30 minutes, closed combustion gas air circuit breaker and stopped supplying gas.
Measure immediately and record the water yield in the first collection container 54, be under high-potting pressure condition main combustion period by total leakage rate of valve 10 to be measured.
After fray-out of flame, close fan blower out-of-blast, the cooling water source being connected with spray piping 41 is opened in fray-out of flame in five minutes, starting spray system 40 waters, to force cooling valve 10 to be measured to its appearance temperature be below 100 DEG C, records valve 10 outside surfaces to be measured and be cooled to 100 DEG C of needed times when following.
Close the second ball valve 162, open the first ball valve 161, the first needle-valve 147, the second needle-valve 148.
Start low-pressure charging pump 142, reduce the low pressure test (LPT) pressure of system pressure to 0.7MPa, keep pressure, in five minutes, measure by the leakage rate of valve 10 to be measured.
Close the first ball valve 161, open the second ball valve 162, the 3rd needle-valve 157.
High-pressure booster 152 is increased to the high-potting pressure of 8.0MPa, close the 5th needle-valve 52, under high-potting pressure, operate valve 10 to be measured to fully open position, leakage quantity outside measuring in five minutes.
To high-pressure booster 152 pressure releases, open all valves, test completes.
Valve to be tested to other inside nominal diameters and nominal pressure carries out with reference to above process of the test.
Understandably, above-mentioned each technical characterictic can combination in any uses and unrestricted.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. the fire-resistant pattern test unit of valve, it is characterized in that, comprise and be connected the constant pressure source (20) so that constant pressure flowing water to be provided to described valve to be measured (10) with valve to be measured (10) upstream, the firing chamber (30) that is used for accommodating described valve to be measured (10) and described valve to be measured (10) is carried out to flame combustion heating, be arranged on and the valve described to be measured (10) after heating carried out to cooling spray system (40) in described firing chamber (30) and be connected to collect first gathering-device (50) of the flowing water that described valve to be measured (10) leaks out downstream with the downstream of described valve to be measured (10),
Described firing chamber (30) comprises the body of heater (31) that is provided with opening (311), is formed with the burning chamber (312) of accommodating described valve to be measured (10) on described body of heater (31);
In described body of heater (31), be provided with the some fuel elements (35) that are evenly arranged in described valve to be measured (10) periphery; Described fuel element (35) comprise nozzle (351) and with the supporting nozzle-regulation mechanism (352) of described nozzle (351);
Described nozzle (351) comprises the jet expansion (3511) for flame, and described nozzle-regulation mechanism (352) coordinates to regulate the relative position between described jet expansion (3511) and described valve to be measured (10) with described nozzle (351).
2. the fire-resistant pattern test unit of valve according to claim 1, it is characterized in that, described nozzle-regulation mechanism (352) comprises the fixed underpan (353) that is arranged on rotationally described body of heater (31) bottom, be arranged on the runing rest (354) on described fixed underpan (353), be arranged on rotationally the turning axle (355) on described runing rest (354), be located at the nozzle fixed mount (356) on described turning axle (355), described nozzle (351) is arranged on described nozzle fixed mount (356), described fixed underpan (353) rotates and regulates described nozzle (351) rotational angle in the horizontal direction, described nozzle fixed mount (356) rotates and regulates the position of described nozzle (351) in short transverse.
3. the fire-resistant pattern test unit of valve according to claim 2, it is characterized in that, on the two opposite sides of described fixed underpan (353), be respectively equipped with first regulating tank (3531) of circular arc, described fixed underpan (353) wears described the first regulating tank (3531) by the first locking part and is installed on described body of heater (31), described first regulating tank (3531) of two circular arcs is concentric, and described fixed underpan (353) rotates to regulate the rotational angle of described jet expansion (3511) horizontal direction according to the arcuate directions of described the first regulating tank (3531);
Described nozzle-regulation mechanism (352) also comprises the rotating disc (357) being arranged on described turning axle (355), and described nozzle fixed mount (356) rotates with the rotation of described rotating disc (357); Described rotating disc (357) is provided with second regulating tank (3572) of circular arc, the axis coinciding of the center of arc of described the second regulating tank (3572) and described turning axle (355), described runing rest (354) is provided with the second lockhole (3541), wear described the second regulating tank (3572) by the second locking part and be locked into described the second lockhole (3541) above, described rotating disc (357) is located to set the position of described jet expansion (3511) short transverse.
4. the fire-resistant pattern test unit of valve according to claim 3, is characterized in that, is provided with sample platform (33) in described body of heater (31), and described sample platform (33) middle part is provided with the hollow bearing for supporting described valve to be measured (10);
The upper edge of described sample platform (33) in length and breadth direction is interval with respectively some the first lockholes (331), and the spacing laterally or between longitudinal adjacent two the first lockholes (331) is suitable with the arc diameter of described the first regulating tank (3531).
5. the fire-resistant pattern test unit of valve according to claim 1, it is characterized in that, described nozzle (351) also comprises the nozzle inlet (3512) being communicated with described jet expansion (3511), and described nozzle inlet (3512) comprises the air inlet (3513) for accessing combustion-supporting gas and accesses the fuel gas inlet (3514) of fuel gas source.
6. the fire-resistant pattern test unit of valve according to claim 5, it is characterized in that, described firing chamber (30) also comprises air path system (37) and combustion gas air-channel system (36), described air path system (37) comprises fan blower, air path pipeline (371), and described air path pipeline (371) comprises the blast orifice (372) connecting with described fan blower and distinguishes the corresponding some air outlets (373) that are communicated with each described air inlet (3513);
Described combustion gas air-channel system (36) comprises the gas pipeline (361) that the gas source of flammable combustion gas is provided and flammable combustion gas is transported to fuel gas inlet (3514), and described gas pipeline (361) comprises the air intake opening (362) being connected with described gas source and the some gas outlets (363) that are connected respectively with each described fuel gas inlet (3514).
7. the fire-resistant pattern test unit of valve according to claim 1, it is characterized in that, described opening (311) is located at the upside of described body of heater (31), described firing chamber (30) also comprises the bell (32) covering on described opening (311), described spray system (40) is arranged on the downside of described bell (32), described spray system (40) comprises the spray piping (41) being arranged on described bell (32), be arranged on water inlet (42) and some shower nozzles (43) on described spray piping (41), described water inlet (42) is connected in described spray piping (41), to inject chilled water with cooling water source, described some shower nozzles (43) are intervally arranged along described spray piping (41), with it is cooling to described valve to be measured (10) water spray.
8. according to the fire-resistant pattern test unit of the valve described in claim 1 to 7 any one, it is characterized in that, described constant pressure source (20) comprises water source (11), low-pressure charging loop (14), high pressure boost-up circuit (15) and switching device shifter (16);
Described low-pressure charging loop (14) is connected between described water source (11) and described valve to be measured (10), so that the flowing water of low pressure test (LPT) pressure to be provided to described valve to be measured (10);
Described high pressure boost-up circuit (15) is connected between described water source (11) and described valve to be measured (10), so that the flowing water of high-potting pressure to be provided to described valve to be measured (10);
Described switching device shifter (16) is arranged on the upstream of described low-pressure charging loop (14), high pressure boost-up circuit (15), described switching device shifter (16) switches between the first state and the second state, so that described water source (11) respectively to described low-pressure charging loop (14), high pressure boost-up circuit (15) supplies water, and provides flowing water to described valve to be measured (10) respectively by described low-pressure charging loop (14), high pressure boost-up circuit (15).
9. the fire-resistant pattern test unit of valve according to claim 8, it is characterized in that, described low-pressure charging loop (14) comprises low pressure pipeline (141), be arranged on low-pressure charging pump (142) on described low pressure pipeline (141), be arranged on the low pressure measurement mechanism (144) in described low-pressure charging pump (142) downstream;
Described low-pressure charging pump (142) is connected the water of water source (11) to be adjusted to the required pressure of low pressure test (LPT) to described valve to be measured (10) output with described valve to be measured (10), the upstream that described low pressure measurement mechanism (144) is located at described valve to be measured (10) outputs to the pressure of the water of described valve to be measured (10) to measure described low-pressure charging pump (142);
Described low pressure measurement mechanism (144) comprises the first tensimeter (145), the second tensimeter (146) that are arranged on described low pressure pipeline (141), between described the first tensimeter (145) and described low pressure pipeline (141), be provided with the first needle-valve (147), between described the second tensimeter (146) and described low pressure pipeline (141), be provided with the second needle-valve (148);
Described high pressure boost-up circuit (15) comprises pressure piping (151), be arranged on high-pressure booster (152) on described pressure piping (151), be arranged on the high-pressure measurement mechanism (154) in described high-pressure booster (152) downstream;
Described high-pressure booster (152) is connected the water of described water source (11) to be adjusted to the required pressure of high-potting to described valve to be measured (10) output with described valve to be measured (10), the upstream that described high-pressure measurement mechanism (154) is located at described valve to be measured (10) outputs to the pressure of the water of described valve to be measured (10) to measure described high-pressure booster (152);
Described high-pressure measurement mechanism (154) comprises the 3rd tensimeter (155), the 4th tensimeter (156) that are arranged on described pressure piping (151), between described the 3rd tensimeter (155) and described pressure piping (151), be provided with the 3rd needle-valve (157), between described the 4th tensimeter (156) and described pressure piping (151), be provided with the 4th needle-valve (158);
Described the first gathering-device (50) comprises collection conduit (51), the 5th needle-valve (52), the first refrigeratory (53) and the first collection container (54), described collection conduit (51) is connected with valve to be measured (10) downstream, it is upper to control the leakage switch of described valve to be measured (10) that described the 5th needle-valve (52) is arranged on described collection conduit (51), the water cooling of leaking from described valve to be measured (10) is discharged to described the first collection container (54) by described the first refrigeratory (53), described the first collection container (54) is arranged on described collection conduit (51) downstream to collect the flowing water leaking.
10. the fire-resistant pattern test unit of valve according to claim 8, is characterized in that;
Between described low-pressure charging loop (14), high pressure boost-up circuit (15) and described valve to be measured (10), be provided with the 6th needle-valve (171), vent valve (172), the second refrigeratory (173) and superpressure backflow gathering-device (174);
Described the 6th needle-valve (171) is arranged on the upstream of described valve to be measured (10) to open or to cut off the water supply of described valve to be measured (10), described vent valve (172) is for the residual air of discharge line, and described the second refrigeratory (173) is for providing the liquid flowing water of equilibrium temperature to described valve to be measured (10);
Described superpressure backflow gathering-device (174) comprises low pressure collecting loop (175), high pressure collecting loop (176), the 3rd refrigeratory (177) and the second collection container (178);
Described low pressure collecting loop (175) comprises low pressure collection conduit (1751), is arranged on the 7th needle-valve (1752), the first safety valve (1753) in described low pressure collection conduit (1751), and described the first safety valve (1753) is supporting with the test pressure in described low-pressure charging loop (14);
Described high pressure collecting loop (176) comprises high pressure collecting pipeline (1761), is arranged on the 8th needle-valve (1762), the second safety valve (1763) on described high pressure collecting pipeline (1761), and described the second safety valve (1763) is supporting with the test pressure of described high pressure boost-up circuit (15);
The water cooling of the downstream that described the 3rd refrigeratory (177) is arranged on described low pressure collecting loop (175), high pressure collecting loop (176) so that superpressure is refluxed;
Described the second collection container (178) is arranged on the downstream of described the 3rd refrigeratory (177), the aqueous water refluxing to collect superpressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209811.8U CN203929365U (en) | 2014-04-25 | 2014-04-25 | The fire-resistant pattern test unit of a kind of valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209811.8U CN203929365U (en) | 2014-04-25 | 2014-04-25 | The fire-resistant pattern test unit of a kind of valve |
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| Publication Number | Publication Date |
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| CN203929365U true CN203929365U (en) | 2014-11-05 |
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| CN201420209811.8U Expired - Lifetime CN203929365U (en) | 2014-04-25 | 2014-04-25 | The fire-resistant pattern test unit of a kind of valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954442A (en) * | 2014-04-25 | 2014-07-30 | 深圳市特种设备安全检验研究院 | Valve fire-proof type test device |
| CN106477495A (en) * | 2016-11-10 | 2017-03-08 | 安徽皖拓自动化有限公司 | A kind of novel traction device in valve refractory test |
-
2014
- 2014-04-25 CN CN201420209811.8U patent/CN203929365U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954442A (en) * | 2014-04-25 | 2014-07-30 | 深圳市特种设备安全检验研究院 | Valve fire-proof type test device |
| CN103954442B (en) * | 2014-04-25 | 2016-05-25 | 深圳市特种设备安全检验研究院 | The fire-resistant pattern experimental rig of a kind of valve |
| CN106477495A (en) * | 2016-11-10 | 2017-03-08 | 安徽皖拓自动化有限公司 | A kind of novel traction device in valve refractory test |
| CN106477495B (en) * | 2016-11-10 | 2018-10-23 | 安徽皖拓自动化有限公司 | A kind of draft gear in valve refractory test |
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