CN205826237U - The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma - Google Patents

The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma Download PDF

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Publication number
CN205826237U
CN205826237U CN201620693345.4U CN201620693345U CN205826237U CN 205826237 U CN205826237 U CN 205826237U CN 201620693345 U CN201620693345 U CN 201620693345U CN 205826237 U CN205826237 U CN 205826237U
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China
Prior art keywords
heat exchanger
chamber
vacuum tank
trauma
snap joint
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CN201620693345.4U
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Chinese (zh)
Inventor
林琦武
马玉炳
丁鹏
麻晓毅
杨丰源
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XINLONGHAO INDUSTRY EQUIPMENT Co Ltd GUANGDONG
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XINLONGHAO INDUSTRY EQUIPMENT Co Ltd GUANGDONG
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Abstract

The utility model discloses the outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma, including evacuating detection components, changeover module, access assembly and controlling the electronic control unit of said modules;Described evacuation detection components includes vacuum pump and leak detector;Described changeover module includes connecting pipeline and valve group;Described access assembly includes vacuum tank and the multiple snap joints can being communicated in described vacuum tank;Described snap joint is arranged on described vacuum tank surface;Described vacuum pump and leak detector are connected with described snap joint by described connection pipeline;Described valve group is arranged in described connection pipeline, in order to control the break-make of different pipeline;Described snap joint can connect by inner chambers different from heat exchanger.Can conveniently carry out the conversion in two chambeies, chamber three during heat exchanger inner hexagon in this utility model, be hunted leak by the automatic heat exchanger of the control realization of electronic control unit, the labor intensity of fall basic skill or training people, it is greatly promoted work efficiency.

Description

The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma
Technical field
This utility model relates to the outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma.
Background technology
Heat exchanger is a kind of heat-exchange device, has multiple cavity, by thin heat-conducting phase between different cavitys inside heat exchanger Separating, accommodate different fluid in casing, heat is conducted to cold flow body by hot fluid, thus realizes the purpose of energy transmission.
It need to be hunted leak by heat exchanger when dispatching from the factory, to guarantee good seal.Three chamber heat exchangers are being examined by we During leakage, need inner chamber is examined two-by-two internal hemorrhage due to trauma, then its three chamber is examined simultaneously leak outside.Existing equipment can not in two intracavity missing inspections and Switch mutually between missing inspection outside three chambeies, cause under efficiency.
Utility model content
In order to overcome the shortcoming of prior art with not enough, the utility model discloses a kind of heat exchanger internal hemorrhage due to trauma and leak outside detection dress Put, including evacuating detection components, changeover module, access assembly and controlling the electronic control unit of said modules;Described evacuation is examined Survey assembly and include vacuum pump and leak detector;Described changeover module includes connecting pipeline and valve group;Described access assembly includes vacuum Case and the multiple snap joints can being communicated in described vacuum tank;Described snap joint is arranged on described vacuum tank surface;Described Vacuum pump and leak detector are connected with described snap joint by described connection pipeline;Described valve group is arranged on described connection pipeline In, in order to control the break-make of different pipeline;Described snap joint can connect by inner chambers different from heat exchanger.
Further, described snap joint includes internal port and outside port, and its internal port can with heat exchanger not Connecting with inner chamber, described outside port connects with the described pipeline that is connected.
Further, also include that source nitrogen, described source nitrogen are connected with described vacuum tank.
Further, described evacuation detection components also includes leak detector switch valve and defecator, and described leak detector switchs Valve and defecator are arranged in the pipeline between described leak detector extremely described vacuum tank.
Further, also include that helium gas source, described helium gas source are respectively connecting to described snap joint.
A kind of detection method applying above-mentioned heat exchanger inner hexagon device, comprises the following steps:
S1: be placed in a vacuum tank by three chamber heat exchangers to be detected, three chambeies of heat exchanger are designated as A chamber, B chamber respectively With C chamber;
S2: three chambeies of vacuum tank and heat exchanger are evacuated to setting value, then closes B chamber, A chamber is filled with helium to pressure Power setting value;Concentrations of helium in detection C chamber and vacuum tank, if both concentrations of helium are all less than setting value, then A chamber is to C Chamber detection is qualified;
S3: close C chamber, B chamber is evacuated to setting value, A chamber is filled with helium to pressure set points;Detection B chamber is with true The concentrations of helium of empty van, if both concentrations of helium are all less than setting value, then the detection of A chamber to B chamber is qualified;
S4: close B chamber, C chamber is evacuated to setting value, B chamber is filled with helium to pressure set points;Detection C chamber is with true Concentrations of helium in empty van, if both concentrations of helium are all less than setting value, then the detection of B chamber to C chamber is qualified;
S5: vacuum tank is evacuated to setting value, three chambeies of heat exchanger are filled with helium to pressure set points the most respectively; The concentration of helium in detection vacuum tank, if concentrations of helium is less than setting value, then this heat exchanger air-tightness is qualified;
S6: reclaim the helium of heat exchanger three intracavity, is then filled with air to atmospheric value, then takes vacuum tank and heat exchanger Go out heat exchanger.
Can conveniently carry out the conversion in two chambeies, chamber three during heat exchanger inner hexagon in this utility model, pass through Electronic Control The automatic heat exchanger of control realization of unit is hunted leak, the labor intensity of fall basic skill or training people, is greatly promoted work efficiency, this practicality Three chambeies that detection method in novel is detected two-by-two by heat exchanger are detected simultaneously, rapidly and efficiently complete leak detection work, This utility model leakage detecting process is simple, does not has unnecessary operation, can the most simply detect in this way.
In order to be more fully understood that and implement, describe this utility model below in conjunction with the accompanying drawings in detail.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of this utility model internal hemorrhage due to trauma detecting method;
Fig. 2 is that this utility model leaks outside the schematic diagram of detecting method;
Fig. 3 is missing inspection (A-B examines internal hemorrhage due to trauma) schematic diagram in this utility model;
Fig. 4 is missing inspection (A-C examines internal hemorrhage due to trauma) schematic diagram in this utility model;
Fig. 5 is missing inspection (B-C examines internal hemorrhage due to trauma) schematic diagram in this utility model;
Fig. 6 is outer missing inspection (three chambeies are examined simultaneously and the leaked outside) schematic diagram of this utility model.
Detailed description of the invention
The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma, on evacuating detection components, changeover module, access assembly and controlling State the electronic control unit of assembly;Described evacuation detection components includes vacuum pump and leak detector;Described changeover module includes connecting Pipeline and valve group;Described access assembly includes vacuum tank 30 and the multiple snap joints can being communicated in described vacuum tank 30;Institute State snap joint and be arranged on described vacuum tank 30 surface;Described vacuum pump and leak detector by described connection pipeline with described quickly Joint connects;Described valve group is arranged in described connection pipeline, in order to control the break-make of different pipeline;Described snap joint can be with The different inner chambers of heat exchanger connect.
Described snap joint includes internal port and outside port, and its internal port can connect by inner chambers different from heat exchanger Connecing, described outside port connects with the described pipeline that is connected.Also include that source nitrogen, described source nitrogen are connected with described vacuum tank 30. Described evacuation detection components also includes that leak detector switch valve and defecator, described leak detector switch valve and defecator are arranged on In pipeline between described leak detector extremely described vacuum tank 30.Also include that helium gas source 31, described helium gas source 31 are respectively connecting to institute State snap joint.
In the present embodiment, have three snap joints, the internal port of three snap joints respectively with three of heat exchanger Inner space, outside port relies on three pipelines be connected to helium gas source 31 and evacuate detection components respectively.
In this device, helium monitors leakage situation as search gas for concentration detector.Electronic control unit can be adopted Use PLC.Air relief valve, pressure switch, pressure regulation filter, surge tank, concentration inspection it is disposed with on helium air delivering pipeline Surveying instrument, angle pedestal valve, high pressure filter, the electric part of the above parts is all connected with described electronic control unit.Concentration is examined The electric part surveying instrument connects with the analog signal terminal of PLC, by digital-to-analogue conversion control and the concentration of detection helium.
Detection device is provided with an operation bench, and operation bench is provided with touch display screen, and described electronic control unit is arranged on institute Stating in operation bench, electronic control unit collects pressure transducer and the information of concentration detector, shows the most on a display screen Show, and regulate and control whole leak detection process by controlling the electromagnetic valve work state in device.When concentration inspection during leak detection When surveying the micro-leakage of instrument discovery, can send alarm signal to electronic control unit, electronic control unit controls device entrance helium again and returns Receipts program, carries out helium recovery to the cavity that micro-leakage occurs.Electronic control unit is by the control to element each in device, it is achieved The conversion that the detection of heat exchanger two chamber detects with three chambeies.
When finding micro-leakage, electronic control unit starts helium recovery program, opens the electricity being communicated to the cavity of leakage Magnet valve, the helium in cavity is extracted out and is reclaimed by air pump.
During leak detection, vacuum tank 30 is provided with openable hermatic door, is placed into by heat exchanger in vacuum tank 30, then passes through The internal port of three snap joints connects with three chambeies of heat exchanger respectively, is then shut off hermatic door, starts leak detection.
When detection, two terms can be related to: background and press down zero.Background refers to original concentrations of helium in environment.Press down Zero refers to treat as zero point worthwhile for helium original in environment artificially.The purpose pressing down zero is in order to avoid original in environment Testing result is impacted by helium.
During to A chamber to C chamber detection internal hemorrhage due to trauma, three chambeies of vacuum tank 30 and heat exchanger are evacuated to setting value, the most all close Close vacuum-pumping pipeline.When in vacuum tank 30, background reaches setting value and background presses down zero when stablizing, it is then shut off being communicated to the electricity in B chamber Magnet valve, closes B chamber;Close the evacuation valve leading to C chamber, open C chamber and lead to the pipeline of leak detector;A chamber is filled with helium to pressure Setting value;Concentrations of helium in detection C chamber and vacuum tank 30, if both concentrations of helium are all less than setting value, then A chamber is to C Chamber detection is qualified;If finding, the concentrations of helium in C chamber exceedes setting value, then show to there is micro-leakage, and concentration detector is to Electronic Control Unit report leaks, and enters helium recovery program.
This utility model embodiment a kind of internal hemorrhage due to trauma of offer and the method for the conversion that leaks outside, it is possible to quickly realize interior missing inspection and leak outside The conversion of inspection, this utility model embodiment also provides for corresponding HE gas filling system..It is described in detail individually below.
This leak detection system uses HE gas to be search gas, and its Concentration Testing is realized the purpose of leak detection by HE leak detector.
Detection components is made up of vacuum pump group and leak detector, and vacuum pump group includes vacuum pump 1 and 2, and it is detected casing Realize rapid vacuumizing.Leak detector 4 accesses the leak rate of casing for detecting.
Changeover module is to be included electromagnetic valve 5,6,8,9,13,14,15,16,17 by vacuum pipe and valve group, it is achieved pipeline stream To be switched fast.
Access assembly include vacuum tank 30, filter 10,11,12,3, snap joint 18,19,20.Access assembly and be used for real Existing workpiece quickly accesses leak detection system.
The detection that internal hemorrhage due to trauma leaks outside is to be realized by one group of valve group, refers to Fig. 1 and Fig. 2.In this example by controlling electromagnetism Valve 8 realizes detection components and accesses the purpose of different casings with the break-make of electromagnetic valve 9.As it is shown in figure 1, close electromagnetic valve 8, beat Open electromagnetic valve 9, detection components will be access in workpiece lumen, thus realize examining the purpose of internal hemorrhage due to trauma.As in figure 2 it is shown, closedown electromagnetic valve 9, open electromagnetic valve 8, detection components will be access in vacuum tank 30 casing, thus reach to examine the purpose that workpiece leaks outside.
It is below specific works flow process:
In the present embodiment, workpiece heat exchanger has three chambeies, respectively A chamber, B chamber, C chamber.Our requirement when workpiece dispatches from the factory It is examined the most respectively internal hemorrhage due to trauma (respectively A-B, A-C, B-C hunt leak), then three chamber inspections are leaked outside.
For board principle we illustrate the most one by one, only board leak-hunting principle is illustrated at this
When we need heat exchanger A-B chamber to hunt leak, such as Fig. 3, closing electromagnetic valve 7,8,13,16,17, remaining is beaten Opening, the leak detector of detection components passes through electromagnetic valve 9,14, then accesses B chamber by electromagnetic valve 10 filter 18 snap joint, at this moment We are filled with certain purity HE gas (HE gas passes through electromagnetic valve 15, filter 11, and snap joint 19 flows into A chamber) to A chamber.By right The reading of leak detector converts thus obtains the real A chamber leak rate to B chamber.
When we need heat exchanger A-C chamber to hunt leak, such as Fig. 4, closing electromagnetic valve 7,8,13,14,17, remaining is beaten Opening, detection components accesses C chamber by filter 12 and snap joint 20 again by electromagnetic valve 9,16, and at this moment A chamber is filled with by we Certain purity HE gas (HE gas passes through electromagnetic valve 15, filter 11, and snap joint 19 flows into A chamber).By the reading to leak detector Convert thus obtain the real A chamber leak rate to C chamber.
When we need heat exchanger B-C chamber to hunt leak, such as Fig. 5, closing electromagnetic valve 7,8,14,15,17, remaining is beaten Opening, detection components accesses C chamber by filter 12 and snap joint 20 again by electromagnetic valve 9,16, and at this moment B chamber is filled with by we Certain purity HE gas (HE gas passes through electromagnetic valve 13, filter 10, and snap joint 18 flows into B chamber).By the reading to leak detector Convert thus obtain the real B chamber leak rate to C chamber.
When we need the inspection of heat exchanger ABC chamber to leak outside, such as Fig. 6, closing electromagnetic valve 7,9,14,16, remaining is opened, Detection components is directly accessed vacuum tank 30 by electromagnetic valve 9, and at this moment we are filled with certain purity HE gas (HE to tri-chambeies of ABC Gas passes through electromagnetic valve 15, and filter 11, snap joint 19 flows into A chamber.HE gas passes through electromagnetic valve 13, filter 10, snap joint 18 flow into B chamber.HE gas passes through electromagnetic valve 17, filter 12, and snap joint 20 flows into C chamber).By the reading of leak detector is converted Thus obtain the leak rate that real ABC leaks outside.
A kind of detection method applying above-mentioned heat exchanger inner hexagon device, comprises the following steps:
S1: be placed in a vacuum tank by three chamber heat exchangers to be detected, three chambeies of heat exchanger are designated as A chamber, B chamber respectively With C chamber;
S2: three chambeies of vacuum tank and heat exchanger are evacuated to setting value, then closes B chamber, A chamber is filled with helium to pressure Power setting value;Concentrations of helium in detection C chamber and vacuum tank, if both concentrations of helium are all less than setting value, then A chamber is to C Chamber detection is qualified;
S3: close C chamber, B chamber is evacuated to setting value, A chamber is filled with helium to pressure set points;Detection B chamber is with true The concentrations of helium of empty van, if both concentrations of helium are all less than setting value, then the detection of A chamber to B chamber is qualified;
S4: close B chamber, C chamber is evacuated to setting value, B chamber is filled with helium to pressure set points;Detection C chamber is with true Concentrations of helium in empty van, if both concentrations of helium are all less than setting value, then the detection of B chamber to C chamber is qualified;
S5: vacuum tank is evacuated to setting value, three chambeies of heat exchanger are filled with helium to pressure set points the most respectively; The concentration of helium in detection vacuum tank, if concentrations of helium is less than setting value, then this heat exchanger air-tightness is qualified;
S6: reclaim the helium of heat exchanger three intracavity, is then filled with air to atmospheric value, then takes vacuum tank and heat exchanger Go out heat exchanger.
Can conveniently carry out the conversion in two chambeies, chamber three during heat exchanger inner hexagon in this utility model, pass through Electronic Control The automatic heat exchanger of control realization of unit is hunted leak, the labor intensity of fall basic skill or training people, is greatly promoted work efficiency, this practicality Three chambeies that detection method in novel is detected two-by-two by heat exchanger are detected simultaneously, rapidly and efficiently complete leak detection work, This utility model leakage detecting process is simple, does not has unnecessary operation, can the most simply detect in this way.
This utility model is not limited to above-mentioned embodiment, if do not taken off various changes of the present utility model or deformation From spirit and scope of the present utility model, if these are changed and deformation belongs to claim of the present utility model and equivalent technologies Within the scope of, then this utility model is also intended to comprise these changes and deformation.

Claims (5)

1. the outer device for detecting leakage of heat exchanger internal hemorrhage due to trauma, it is characterised in that: include evacuating detection components, changeover module, access group Part and the electronic control unit of control said modules;Described evacuation detection components includes vacuum pump and leak detector;Described switch groups Part includes connecting pipeline and valve group;Described access assembly includes vacuum tank and multiple quickly connecing of can being communicated in described vacuum tank Head;Described snap joint is arranged on described vacuum tank surface;Described vacuum pump and leak detector by described connection pipeline with described Snap joint connects;Described valve group is arranged in described connection pipeline, in order to control the break-make of different pipeline;Described snap joint Can be connected with the inner chamber of heat exchanger.
The outer device for detecting leakage of heat exchanger internal hemorrhage due to trauma the most according to claim 1, it is characterised in that: in described snap joint includes Portion's port and outside port, its internal port can connect by inner chambers different from heat exchanger, described outside port and described connecting tube Road connects.
The outer device for detecting leakage of heat exchanger internal hemorrhage due to trauma the most according to claim 1, it is characterised in that: also include source nitrogen, described Source nitrogen is connected with described vacuum tank.
The outer device for detecting leakage of heat exchanger internal hemorrhage due to trauma the most according to claim 1, it is characterised in that: described evacuation detection components is also Including leak detector switch valve and defecator, it is the most described very that described leak detector switch valve and defecator are arranged on described leak detector In pipeline between empty van.
The outer device for detecting leakage of heat exchanger internal hemorrhage due to trauma the most according to claim 1, it is characterised in that: also include helium gas source, described Helium gas source is respectively connecting to described snap joint.
CN201620693345.4U 2016-07-01 2016-07-01 The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma Active CN205826237U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106197878A (en) * 2016-07-01 2016-12-07 广州新龙浩工业设备有限公司 The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma and detection method
CN108871688A (en) * 2018-09-30 2018-11-23 广西玉柴机器股份有限公司 A kind of test-run a machine rack intercooler cooling line leakage detection method
CN110000113A (en) * 2019-05-06 2019-07-12 昆山泽旭自动化科技有限公司 A kind of heat exchanger helium inspection equipment
WO2021069519A1 (en) * 2019-10-07 2021-04-15 Accutest International Ltd Detection of leaks in heat exchangers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106197878A (en) * 2016-07-01 2016-12-07 广州新龙浩工业设备有限公司 The outer device for detecting leakage of a kind of heat exchanger internal hemorrhage due to trauma and detection method
CN108871688A (en) * 2018-09-30 2018-11-23 广西玉柴机器股份有限公司 A kind of test-run a machine rack intercooler cooling line leakage detection method
CN110000113A (en) * 2019-05-06 2019-07-12 昆山泽旭自动化科技有限公司 A kind of heat exchanger helium inspection equipment
WO2021069519A1 (en) * 2019-10-07 2021-04-15 Accutest International Ltd Detection of leaks in heat exchangers
GB2588117A (en) * 2019-10-07 2021-04-21 Accutest Int Ltd Detection of leaks in heat exchangers

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