CN103728105A - Quantitative leak detection device of pressure system - Google Patents

Quantitative leak detection device of pressure system Download PDF

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Publication number
CN103728105A
CN103728105A CN201310752089.2A CN201310752089A CN103728105A CN 103728105 A CN103728105 A CN 103728105A CN 201310752089 A CN201310752089 A CN 201310752089A CN 103728105 A CN103728105 A CN 103728105A
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chamber
detection
leak
gas
pressure system
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CN103728105B (en
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马志刚
韩嘉兴
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Suzhou Bao Hua sealing Polytron Technologies Inc
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Suzhou Baohua Mechanical Technology Co Ltd
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Abstract

The invention discloses a quantitative leak detection device of a pressure system. The quantitative leak detection device of the pressure system is used for quantitative detection of sealing leak of the steam pressure system. A leak guiding cavity is formed in the pressure system, so that a working medium leaked by a pressure containing cavity of the pressure system at the sealing position is guided into the leak guiding cavity, and then a balance tank, a synchronous heating device, a cooling device and the leak guiding cavity form a leak detection pipeline with constant pressure. Gas for detection is supplied into the balance tank continuously through a gas storage tank so that constant pressure in the leak detection pipeline can be guaranteed. In the detection process, only the change quantity of the humidity in the balance tank needs to be detected, liquid water which is not absorbed by the gas for detection and is discharged by the balance tank is collected and weighed, and in combination with the size of the leak detection pipeline and the size of the gas storage tank, the specific value of the sealing leak quantity of the pressure system in a certain period can be conveniently obtained. According to the sealing leak quantity, the sealing condition of the pressure system can be obtained immediately. The quantitative leak detection device of the pressure system can be suitable for quantitative leak detection of the sealing leak quantity of multi-field steam pressure systems.

Description

A kind of quantitative leak detecting device of pressure system
Technical field
The present invention relates to a kind of quantitative leak detecting device of pressure system.
Background technology
In the industrial sectors such as nuclear power, thermoelectricity, the energy, often have vapour system, these vapor compression system are the pressure systems that formed by sealing between equipment and pipeline flange.And for pressure system, leakage is absolute, it is relative not leaking, as long as the seal leakage amount of system meets the maximum that the factors such as environmental protection, safety and economy determine, allows slip index, can think that system do not leak.Pressure system packoff is when manufacturing, install, debugging or turning round, not only need to know that it has or not leakage, but also need to know the size of leakage rate, the leakage rate of pressure system is carried out to quantitative detection to be become and judges that can leakage rate meet the key that allows to leak index.Meanwhile, in the process of using, its leakage is carried out quantitatively detecting and monitoring in pressure system packoff running, can guarantee the safe operation of system, therefore, the seal leakage of pressure system is carried out to quantitative detection also to be become and judge the whether effective gordian technique of sealing.
Summary of the invention
The object of this invention is to provide a kind of quantitative leak detecting device of pressure system, thereby the seal leakage amount of vapor compression system is quantitatively detected.
For achieving the above object, the technical solution used in the present invention is: a kind of quantitative leak detecting device of pressure system, pressure system to be detected have sealing and in be provided with the pressure chamber of actuating medium, described pressure chamber arranges by the first seal sealing that is circumferentially closed form, the outside perimembranous of described the first seal is equipped with the second seal, described the first seal, between described the second seal and described pressure system, form and airtight collect the drawing of actuating medium leaking out through described pressure chamber and leak chamber, the described leakage chamber of drawing has the import and the outlet that are connected with described pressure system outside, described pick-up unit also comprises:
Gas-holder, stores the detection gas that is difficult for making described the first seal and described the second seal oxidation or corrosion;
Balance tank, the pressure in described balance tank is steady state value, and described balance tank also has the inflation inlet being connected with described gas-holder and the drain being connected with outside, and described balance tank also has the air intake opening and the gas outlet that lay respectively at two ends;
Synchronous Heating device, be connected to described balance tank described gas outlet and described in draw between the described import of leaking chamber, for the described detection of discharging through the described gas outlet of described balance tank is heated to be close with the temperature of actuating medium described in described pressure chamber with gas, and the described detection after heating is drawn to the described import of leaking chamber and is drawn described in being delivered to and leak chamber by described with gas, described detection with gas at the described described actuating medium formation potpourri that draws leakage chamber described in being bled into described pressure chamber in leaking chamber that draws;
Flowmeter, is located at the porch of described Synchronous Heating device, for detection of the flow of gas that passes into described Synchronous Heating device;
The first hygronom, is located at the porch of described Synchronous Heating device, for detection of the absolute humidity of gas that passes into described Synchronous Heating device;
Cooling device, draws described in being connected to and leaks between chamber and the described air intake opening of described balance tank, cooling for the described potpourri that the described outlet of drawing leakage chamber described in warp is discharged;
The second hygronom, is located at the exit of described cooling device, for detection of the humidity that flows into the gas of described balance tank through described cooling device,
The 3rd hygronom, for detection of the humidity of gas in described balance tank;
Collector tube, the bottom of described balance tank offers liquid collection opening, and the tube inlet of described collector tube is connected with described liquid collection opening, and the pipe exit of described collector tube is provided with hydrops bottle, and described tube inlet, described pipe exit are equipped with operation valve;
Weighing instrument, the liquid quality of collecting for weighing described hydrops bottle,
Described balance tank, described Synchronous Heating device, described in draw leak chamber, described cooling device forms the leak detection pipeline that circulation is communicated with, and is also provided with the ebullator that can make described detection gas circulate in described leak detection pipeline in described leak detection pipeline.
Preferably, described the first seal, described the second seal are grommet type seals.
Preferably, described pressure system comprises the vessel flange and the end cap flange that interfix, described vessel flange has equipment cavity, described the first seal is located between described vessel flange and described end cap flange hermetically, between described equipment cavity and described end cap flange, described the first seal, forms described pressure chamber.
Preferably, between the described inflation inlet of described gas-holder and described balance tank, be provided with pressure maintaining valve, the described inflation inlet place of described balance tank is provided with can detect the pressure detecting instrument that enters the gaseous tension of detection described in described inflation inlet after described pressure maintaining valve voltage stabilizing.
Preferably, described Synchronous Heating device and described in draw to leak to be also provided with between chamber for detection of drawing described in flowing into after described Synchronous Heating device heating to leak and described in chamber, detect the temperature sensor by the temperature of gas.
Preferably, described in, draw the described outlet of leaking chamber and draw the bottom of leaking chamber described in being located at.
Preferably, described in, draw the described import of leaking chamber and described outlet and lay respectively at the phase heterodoxy of described pressure system.
Preferably, described pick-up unit also comprises the thermometer for detection of temperature in described balance tank.
Preferably, described collector tube is transparence.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The quantitative leak detecting device of pressure system of the present invention, for the seal leakage of vapor compression system is quantitatively detected, wherein by arrange one on pressure system, draw leakage chamber, the actuating medium that the pressure chamber of pressure system is leaked out in sealing place enters to draw and leaks in chamber, then by balance tank is set, Synchronous Heating device, cooling device leaks chamber and forms the leak detection pipeline of a constant pressure with drawing, by gas-holder, constantly to providing in balance tank to detect, guarantee the constant of pressure in leak detection pipeline with gas, the detection of relatively dry with gas through Synchronous Heating device be heated to pressure chamber in actuating medium temperature be blown into draw after approaching as far as possible and leak in chamber, detect with gas and be bled into pressure chamber the actuating medium drawing in leakage chamber in chamber and be mixed to form potpourri drawing to leak, then this potpourri is blown out, in being cooled to certain temperature range, cooling device makes that the temperature of potpourri is not too high makes the steam state part in potpourri not be condensed simultaneously, after cooling, passed into again in balance tank.
When leakage rate hour, the vapourous mixture that the potpourri that enters cooling device is unsaturated state, by detect a period of time initial when finishing the humidity in balance tank, and can know total leakage rate and the slip in this period in conjunction with the volume of gas-holder and leak detection pipeline, when leakage rate is larger, the liquid-vapor mixture that the potpourri that enters cooling device is hypersaturated state, also need the liquid by collecting this liquid part, the variable quantity of humidity in overall equilbrium tank again, the volume of gas-holder and leak detection pipeline is known total leakage rate and the slip in this period.Can obtain easily so the concrete numerical value of the seal leakage amount of certain hour internal pressure system, can be to immediately knowing the sealing condition of pressure system, applicable to the quantitative detection of the seal leakage amount of equipment and pipeline flange in the vapor compression system of the industrial sectors such as nuclear power, thermoelectricity, the energy according to sealing leakage rate.This structure of the detecting device is simple, detects operation also more for convenience.
According to the quantitative testing result of this leakage rate, can reach following object:
1, can verify seal designs slip, thus rationality and the security of checking seal designs;
2, the leakage rate that can be used for (temperature, pressure, medium etc. change) under variable working condition condition detects, and then can obtain the corresponding relation between operating mode (temperature, pressure, medium etc.) condition and the leakage rate of seal, thereby can determine the leakage rate under sealing part works condition, for the designs such as the link of seal and seal provide accurately Data support;
3, can detect in time the situation of change of seal leakage rate under condition of work, according to the relation of operating condition and leakage rate, can judge the safe and effective situation of sealing, by the timely detection of leakage rate, can reach and leak before critical value in leakage rate, take in advance safe and effective measure, guarantee the safe and reliable of sealing.Particularly whether reliable the very high field of some safety requirements, as nuclear power and petrochemical industry etc., by the timely detection to seal leakage amount, can monitor sealing, in time for equipment safety operation provides safety guarantee.
Accompanying drawing explanation
The structural representation that accompanying drawing 1 is pick-up unit of the present invention.
Wherein: 1, gas-holder; 2, balance tank; 3, ebullator; 4, Synchronous Heating device; 5, pressure system; 51, vessel flange; 52, end cap flange; 53, pressure chamber; 6, the first seal; 7, the second seal; 8, draw and leak chamber; 9, cooling device; 10, pressure maintaining valve; 11, pressure detecting instrument; 12, flowmeter; 13, the first hygronom; 14, temperature sensor; 15, the second hygronom; 16, the 3rd hygronom; 17, thermometer; 18, atmospheric valve; 19, collector tube; 20, operation valve, 21, operation valve; 22, hydrops bottle; 23, weighing instrument; 24, tensimeter.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment of the present invention, technical scheme of the present invention is further elaborated.
Pick-up unit for the present embodiment employing shown in Figure 1.Pressure system 5 to be detected is vapor compression system, it comprises the vessel flange 51 and the end cap flange 52 that interfix, wherein vessel flange 51 has equipment cavity, end cap flange 52 is located at the oral area of equipment cavity for sealing this equipment cavity, between end cap flange 52 and vessel flange 51, by the first seal 6 that is circumferentially closed form, seal, make equipment cavity and end cap flange 52, between the first seal 6, form the pressure chamber 53 of sealing, the actuating medium of pressure system 5 is located in pressure chamber 53, actuating medium in pressure chamber 53 is High Temperature High Pressure herein steam or water.
For the seal leakage amount of the first seal 6 on pressure system 5 is quantitatively detected, between the vessel flange 51 of pressure system 5 and end cap flange 52, be also provided with the second seal 7, the second seal 7 rings are located at the outside perimembranous of the first seal 6, here, the first seal 6 and the second seal 7 all can adopt the O-ring seal of ring-type, and the diameter of the second seal 7 is greater than the diameter of the first seal 6.Like this, between the vessel flange 51 of the first seal 6, the second seal 7 and pressure system 5, end cap flange 52, just formed to draw and leaked chamber 8, if the sealing of the pressure chamber 53 of pressure system 5 produces, leak, the actuating medium leaking out in pressure chamber 53 can enter to draw and leak in chamber 8.The pressure bearing due to second seal 7 in outside is little, and in testing process, substantially without leaking, in testing process, its leakage rate can be ignored.Draw on leakage chamber 8 and offer the import and the outlet that are connected with pressure system 5 outsides, this import and outlet lay respectively at the different both sides of pressure system 5.
Shown in Figure 1, this pick-up unit also comprises gas-holder 1, balance tank 2, Synchronous Heating device 4, cooling device 9, ebullator 3.
Gas-holder 1 stores detection gas, this detection need be selected according to the material of the first seal 6 and the second seal 7 with gas, can adopt the non-oxidizing gas that can the first seal 6, the second seal 7 not produced oxidation or be corroded as nitrogen, helium, air etc., can avoid like this detecting being filled with to draw after leaking in chamber 8 with gas the first seal 6 oxidation or corrosion is occurred to and the sealing of breaking pressure system 5, also avoid it that oxidation reaction or corrosion are occurred the second seal 7 to and destroy to draw and leak the sealing in chamber 8 and affect testing result.The exit of gas-holder 1 is provided with pressure maintaining valve 10 and pressure detecting instrument 11, detection in gas-holder 1 will pass in balance tank 2 after pressure maintaining valve 10 voltage stabilizings with gas again, 11 of pressure detecting instruments are for detection of the pressure that enters the interior detection of balance tank 2 gas, and pressure detecting instrument 11 can adopt tensimeter or pressure transducer.
Balance tank 2 has the inflation inlet being connected with gas-holder 1 and the drain being connected with outside, by gas-holder 1, constantly in balance tank 2, supplement detection gas, the pressure stability of balance tank 2 inside is at a steady state value, and the requirement of this steady state value when detecting set.The lower end of balance tank 2 has gas outlet, and its upper end is air intake opening.
The place, gas outlet of balance tank 2 is provided with ebullator 3, ebullator 3 is connected with Synchronous Heating device 4 again, ebullator 3 pumps into the detection in balance tank 2 in Synchronous Heating device 4 and heats with gas, Synchronous Heating device 4 leaks this detection passing in chamber 8 with passing into after gas-heated to draw again, Synchronous Heating device 4 should will detect with gas-heated to approaching as far as possible with the temperature of the pressure chamber 53 interior actuating mediums of pressure system 5, can avoid causing like this Local cooling of the first seal 6, thereby avoid the first seal 6 in testing process deform and cause the destruction to pressure system 5 sealings.
Cooling device 9 is connected to draw and leaks between chamber 8 and the air intake opening of balance tank 2, after entering with gas and draw in leakage chamber 8, detection after 4 heating of Synchronous Heating device purges being bled into the actuating medium drawing in leakage chamber 8, detect with gas and leak in chamber 8 and be bled into the actuating medium drawing in leakage chamber 8 and mix mutually and form potpourri drawing, it is cooling that this potpourri leaks chamber 8 outlet through drawing enters cooling device 9.Here, drawing the outlet of leaking chamber 8 is located at and draws the bottom of leaking chamber 8, when leakage rate is larger, enter like this when drawing the detection gas that leaks chamber 8 and cannot absorb completely the actuating medium leaking out, the actuating medium that can be convenient to leak out flows out and enters cooling device 9 from above-mentioned outlet.Draw import and the outlet of leaking chamber 8 and lay respectively at the phase heterodoxy of pressure system 5, apart from each other between import and outlet like this, is convenient to enter and draws the detection gas that leaks chamber 8 and fully blow out being bled into the actuating medium drawing in leakage chamber 8.When leakage rate hour, the aqueous water leaking out and water vapor can be detected by gas absorption, and make said mixture be steam state, and when leakage rate is larger, the aqueous water of part can not be detected by gas absorption, detection presents hypersaturated state with gas, and said mixture presents the potpourri that vapour-liquid is mixed.Cooling device 9 is cooled to this potpourri below 200 ℃, the temperature of cooling rear potpourri is advisable between 105 ℃~200 ℃, thereby make its temperature both not too high, also make the steam state part in potpourri not be condensed, after cooling device 9 is cooling, by it, the air intake opening through balance tank 2 passes in balance tank 2 more simultaneously.
Like this, balance tank 2, described Synchronous Heating device 10, draw and leak chamber 8, cooling device 9 and just forms the leak detection pipeline that circulation is communicated with, thereby can make to detect by the effect of ebullator 3 detection that circulates with gas in this leak detection pipeline, draw the leakage rate in leakage chamber 8.Because gas-holder 1 supplements detection gas constantly in balance tank 2, the ducted pressure of this leak detection is steady state value.
Shown in Figure 1, the porch of Synchronous Heating device 4 is provided with flowmeter 12 and the first hygronom 13, be respectively used to detect the detection flow, the absolute humidity of gas that pass into Synchronous Heating device 4, between flowmeter 12 and ebullator 3, be also provided with another tensimeter 24, to detect the ducted pressure condition of this leak detection.The outlet of Synchronous Heating device 4 and draw between the import of leaking chamber 8 and be provided with temperature sensor 14, with monitoring, after Synchronous Heating device 4 heating, pass into draw to leak and in chamber 8, detect the temperature with gas, this temperature should be as far as possible with pressure chamber 53 in the temperature of actuating medium be close.Between the air intake opening of the outlet of cooling device 9 and balance tank 2, be provided with the second hygronom 15, for detecting the humidity that enters the vapourous mixture of balance tank 2 after cooling device 9 is cooling.Balance tank 2 places are provided with for detection of the 3rd hygronom 16 of gas humidity in balance tank 2 with for monitoring the thermometer 17 of its internal temperature.
Shown in Figure 1, in the actuating medium leaking out when larger for Leakage prevention amount, to detected, detect by the part of gas absorption, the bottom of balance tank 2 offers liquid collection opening, this liquid collection opening place is connected with the collector tube 19 of transparence, between the tube inlet of collector tube 19 and liquid collection opening, be provided with operation valve 20, the pipe exit of collector tube 19 is provided with hydrops bottle 22, between collector tube 19 and hydrops bottle 22, be provided with operation valve 21, detecting with gas in leak detection pipeline during circular leak hunting, operation valve 20 is in open mode, operation valve 21 is closed, when the detected actuating medium by gas absorption is through cooling device 9 condensations and enter after balance tank 2 forms hydrops and just flow into collector tube 19, when observing while having hydrops in collector tube 19, just first closed control valve 20, then opening operation valve 21 is transferred to hydrops in hydrops bottle 22, and then closed control valve 21, open operation valve 20, continue said process.In hydrops bottle 22, collect to such an extent that hydrops is weighed and known its weight by weighing instrument 23.
While starting to detect, first by closing the valve at balance tank 2 air intake openings and two places, gas outlet, the atmospheric valve at drain place 18 is opened, by gas-holder 1 to the detection gas that is filled with constant pressure in balance tank 2, simultaneously by emptying original gas in balance tank 2, after original gas in balance tank 2 is emptying, close the atmospheric valve 18 at drain place, open the valve at balance tank 2 air intake openings and two places, gas outlet, in balance tank 2, be filled with detection gas constantly, the ducted constant pressure that makes to hunt leak, now can start leak detection operation.
During detection, record testing result as follows respectively:
The absolute humidity of the first hygronom 13 is H 1(gram/cubic metre);
The absolute humidity of the second hygronom 15 is H 2(gram/cubic metre);
The absolute humidity of the 3rd hygronom 16 is H 3(gram/cubic metre);
The flow q(of flowmeter 12 cube m/h);
The volume of gas-holder 1: V 1(cubic meter);
Leak detection conduit volume: V 2(cubic meter)
Hydrops bottle 22 weighs the weight of the liquid obtaining: g(gram)
So just, can calculate leakage rate and slip, as follows respectively:
Under unsaturated state, during g=0:
Instantaneous leak rate is: L '=(H 2-H 1) × q, unit: Grams Per Hour;
The interior total leakage rate of t detection time:
L "=(H 3" H 3') × (V 1+ V 2), unit: gram;
Wherein: H 3humidity in '-detection time t initial balance tank 2,
H 3" humidity when-detection time, t finished in balance tank 2.
T internal leakage detection time rate: L=L "/t, unit: Grams Per Hour.
Under hypersaturated state, during g > 0:
The interior total leakage rate of t detection time:
L "=(H 3" H 3') × (V 1+ V 2)+g, unit: gram;
Wherein: H 3humidity in '-detection time t initial balance tank 2,
H 3" humidity when-detection time, t finished in balance tank 2.
T internal leakage detection time rate: L=L "/t, unit: Grams Per Hour.
To sum up, adopt pick-up unit of the present invention just can to the leakage rate of pressure system 5, quantitatively detect easily, can immediately know the sealing condition of pressure system 5, applicable to nuclear power, thermoelectricity, the quantitative detection of the seal leakage amount of equipment and pipeline flange in the vapor compression system of the industrial sectors such as the energy, according to the quantitative testing result of this leakage rate, not only can verify seal designs slip, thereby rationality and the security of checking seal designs, and can be used for (temperature under variable working condition condition, pressure, media etc. change) leakage rate detect, and then can obtain the operating mode (temperature of seal, pressure, medium etc.) corresponding relation between condition and leakage rate, thereby can determine the leakage rate under sealing part works condition, for the designs such as the link of seal and seal provide accurately Data support.
In addition, adopt above-mentioned detection device and detection method quantitatively to detect the seal leakage amount of pressure system 5, can detect in time the situation of change of seal leakage rate under condition of work, according to the relation of operating condition and leakage rate, can judge the safe and effective situation of sealing, by the timely detection of leakage rate, can reach and leak before critical value in leakage rate, take in advance safe and effective measure, guarantee the safe and reliable of sealing.Particularly whether reliable the very high field of some safety requirements, as nuclear power and petrochemical industry etc., by the timely detection to seal leakage amount, can monitor sealing, in time for equipment safety operation provides safety guarantee.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (9)

1. the quantitative leak detecting device of a pressure system, pressure system (5) to be detected have sealing and in be provided with the pressure chamber (53) of actuating medium, described pressure chamber (53) arranges by the first seal (6) sealing that is circumferentially closed form, it is characterized in that: the outside perimembranous of described the first seal (6) is equipped with the second seal (7), described the first seal (6), between described the second seal (7) and described pressure system (5), form and airtight collect the drawing of actuating medium leaking out through described pressure chamber (53) and leak chamber (8), the described leakage chamber (8) of drawing has the import and the outlet that are connected with described pressure system (5) outside, described pick-up unit also comprises:
Gas-holder (1), stores the detection gas that is difficult for making described the first seal (6) and described the second seal (7) oxidation or corrosion;
Balance tank (2), pressure in described balance tank (2) is steady state value, described balance tank (2) also has the inflation inlet being connected with described gas-holder (1) and the drain being connected with outside, and described balance tank (2) also has the air intake opening and the gas outlet that lay respectively at two ends;
Synchronous Heating device (4), be connected to described balance tank (2) described gas outlet and described in draw leak chamber (8) described import between, for the described detection of discharging through the described gas outlet of described balance tank (2) is heated to be close with the temperature of actuating medium described in described pressure chamber (53) with gas, and draw and leak chamber (8) described in the described detection after heating is delivered to by described described import of drawing leakage chamber (8) with gas, described detection is drawn the described actuating medium that leaks chamber (8) described in being bled into described pressure chamber (53) in leaking chamber (8) and is formed potpourri in described drawing with gas,
Flowmeter (12), is located at the porch of described Synchronous Heating device (4), for detection of the flow of gas that passes into described Synchronous Heating device (4);
The first hygronom (13), is located at the porch of described Synchronous Heating device (4), for detection of the absolute humidity of gas that passes into described Synchronous Heating device (4);
Cooling device (9), draws described in being connected to and leaks between chamber (8) and the described air intake opening of described balance tank (2), cooling for the described potpourri that will discharge through described described outlet of drawing leakage chamber (8);
The second hygronom (15), is located at the exit of described cooling device (9), for detection of the humidity that flows into the gas of described balance tank (2) through described cooling device (9),
The 3rd hygronom (16), for detection of the humidity of gas in described balance tank (2);
Collector tube (19), the bottom of described balance tank (2) offers liquid collection opening, the tube inlet of described collector tube (19) is connected with described liquid collection opening, the pipe exit of described collector tube is provided with hydrops bottle (22), described pipe A.n, described pipe exit are equipped with operation valve (20,21);
Weighing instrument (23), the liquid quality of collecting for weighing described hydrops bottle (22),
Described balance tank (2), described Synchronous Heating device (4), described in draw leak chamber (8), described cooling device (9) forms the leak detection pipeline that circulation is communicated with, and is also provided with the ebullator (3) that can make described detection gas circulate in described leak detection pipeline in described leak detection pipeline.
2. the quantitative leak detecting device of pressure system according to claim 1, is characterized in that: described the first seal (6), described the second seal (7) are grommet type seals.
3. the quantitative leak detecting device of pressure system according to claim 1 and 2, it is characterized in that: described pressure system (5) comprises the vessel flange (51) and the end cap flange (52) that interfix, described vessel flange (51) has equipment cavity, described the first seal (6) is located between described vessel flange (51) and described end cap flange (52) hermetically, between described equipment cavity and described end cap flange (52), described the first seal (6), forms described pressure chamber (53).
4. the quantitative leak detecting device of pressure system according to claim 1, it is characterized in that: between described gas-holder (1) and the described inflation inlet of described balance tank (2), be provided with pressure maintaining valve (10), the described inflation inlet place of described balance tank (2) is provided with can detect the pressure detecting instrument (11) that enters the gaseous tension of detection described in described inflation inlet after described pressure maintaining valve (10) voltage stabilizing.
5. the quantitative leak detecting device of pressure system according to claim 1, is characterized in that: described Synchronous Heating device (4) and described in draw to leak between chamber (8), to be also provided with for detection of drawing described in flowing into after described Synchronous Heating device (4) heating and leak the temperature sensor (14) that detects the temperature of using gas described in chamber (8).
6. the quantitative leak detecting device of pressure system according to claim 1, is characterized in that: described in draw the described outlet of leaking chamber (8) and draw the bottom of leaking chamber (8) described in being located at.
7. according to the quantitative leak detecting device of the pressure system described in claim 1 or 6, it is characterized in that: described in draw described import and the described outlet of leaking chamber (8) and lay respectively at described pressure system (5) phase heterodoxy.
8. the quantitative leak detecting device of pressure system according to claim 1, is characterized in that: described pick-up unit also comprises the thermometer (17) for detection of temperature in described balance tank (2).
9. the quantitative leak detecting device of pressure system according to claim 1, is characterized in that: described collector tube (19) is transparence.
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CN106441842A (en) * 2016-09-14 2017-02-22 常州大学 Device for measuring high-temperature high-pressure micro steam leakage
CN108254130A (en) * 2017-12-30 2018-07-06 北京化工大学 Continuous high-temperature sealing performance test wind tunnel device
CN109922643A (en) * 2019-04-02 2019-06-21 苏州佳世达光电有限公司 The electronic device of water-cooling system and the application system
CN110274738A (en) * 2019-06-21 2019-09-24 广东电网有限责任公司 A kind of hermetically sealed box body tightness monitoring method and system based on moisture increment

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