CN103808475A - Leakage detecting head, condenser on-line leakage detecting device and applications thereof - Google Patents
Leakage detecting head, condenser on-line leakage detecting device and applications thereof Download PDFInfo
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- CN103808475A CN103808475A CN201410070808.7A CN201410070808A CN103808475A CN 103808475 A CN103808475 A CN 103808475A CN 201410070808 A CN201410070808 A CN 201410070808A CN 103808475 A CN103808475 A CN 103808475A
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Abstract
The invention discloses a leakage detecting head, a condenser on-line leakage detecting device with the leakage detecting head and a leakage detecting method. The leakage detecting head is used for detecting leakage of a condenser condensation tube and comprises a casing, a pressure sensor and a driving device, wherein the front end of the casing is open, the pressure sensor is arranged in the casing and connected with the casing in a sealing mode, the inside of the casing is divided into front and rear cavities such as a pressure detecting cavity and a pressure stabilizing cavity, the driving device is connected with the rear end of the casing, and when leakage detection is performed, the front end of the casing is in sealing fit with tube plates on the periphery of the condensation tube to be detected, or the front end of the casing stretches into the condensation tube to be detected to be in sealing fit with the inner wall of the condensation tube. The condenser on-line leakage detecting device comprises the leakage detecting head, a choke plug, a mechanical arm and a control system. By means of the leakage detecting head and the condenser on-line leakage detecting device, the automation of the on-line leakage detecting process can be effectively achieved, and the usage is convenient and fast, and safe and reliable.
Description
Technical field
The present invention relates to a kind of leak detection detecting head for the online leak detection of condenser, adopt the leakage detection apparatus of this leak detection detecting head and concrete leak hunting method.
Background technology
Condenser is the important device in steam turbine of thermal power plant electricity generation system, and Main Function, except the steam discharge of steam turbine being condensed into water boiler of feeding reuses, can also be set up at turbine discharge place vacuum and maintain vacuum.The efficiency of steam turbine and the vacuum tightness of condenser have much relations, and vacuum tightness is larger, and efficiency is higher.Once condenser is revealed, vacuum tightness will decline.The leakage of condenser mostly occurs in the junction of condenser pipe or condenser pipe and tube sheet, but condenser condenser pipe number is numerous, and leak detection is an industry difficult problem.
Existing the leak detection of condenser is mainly adopted to following several method:
1, gas tracing.This detection method is carried out under off-line (shutdown) state, and condenser is artificially produced to vacuum, passes into the gas that contains certain chemical composition respectively to each condenser pipe, by the detection of condensation chamber gas componant is judged to leak point.Although the method can effectively judge the condenser pipe that leakage occurs, the method must be carried out under stopped status, has affected production efficiency, and needs artificial generation vacuum and constantly pass into gas, and comparatively complicated, cost is high.
2, condenser water sample monitoring method.This monitoring method is carried out chemical composition analysis by the water sample in collection condenser condensed water and is judged whether condenser is revealed.The method on-line monitoring, although do not affect production efficiency, whether it can only monitor reveals, and can not effectively judge concrete leak point.
3, pressure detection method.Comprise positive pressure method and negative pressure; conventionally adopt to shut down and detect; need to give the condensation chamber pressurization of condenser; also have to adopt and vacuumize; or seal after tested condenser pipe condenser pipe pressurization etc., this several method, all needs additionaling power; then manually to condenser pipe pressure detection or air-flow judgement one by one, inefficiency.At present; also there is the pressure detection method in the half shutdown situation of employing; this method is that condenser pipe to be detected place hydroecium part is quit work; other parts condenser pipe is still worked and is made to produce in condenser vacuum; although this half shutdown method does not need additionaling power, but still be manually each condenser pipe to be measured to be carried out to pressure detection or air-flow judges leak point.Although these pressure detection methods are detection of leaks point effectively, be all shut down or half shut down the lower manual detection that adopts, majority needs additionaling power, operates comparatively loaded down with trivial detailsly, and detection efficiency is low.
Summary of the invention
To the object of the invention is the defect existing in prior art in order solving, a kind of leak detection detecting head and the leakage detection apparatus of effectively automatic detection of leaks point to be online provided.
In order to achieve the above object, the invention provides a kind of leak detection detecting head, this leak detection detecting head, for the leak detection of condenser condenser pipe, comprises housing, pressure transducer and drive unit; Housing front opening; Pressure transducer is located in housing, is connected, and enclosure interior is divided into pressure detection chamber and former and later two cavitys of pressure stabilizing cavity with housing seal; Drive unit is connected with housing rear end; In the time hunting leak, all side pipe plates of housing front end and condenser pipe to be measured gluing, sealing, or housing front end stretches in condenser pipe to be measured and condenser pipe inwall gluing, sealing.
Further improvement of the present invention is: above-mentioned housing is provided with voltage stabilizing through hole, this voltage stabilizing through hole is connected with above-mentioned pressure stabilizing cavity.Communicate with the condenser water box external world by voltage stabilizing through hole, make pressure in pressure stabilizing cavity maintain an atmospheric pressure, play pressure calibration object.
The present invention's detecting head of hunting leak also comprises hold down gag, and drive unit is connected with housing rear end by hold down gag.
In above-mentioned housing, be provided with seal diaphragm and minor axis; Wherein, seal diaphragm and housing, pressure transducer surround above-mentioned pressure stabilizing cavity; Minor axis is positioned at housing rear end, and is connected with seal diaphragm is vertical; Hold down gag comprises stage clip and compresses axle sleeve; Stage clip and compression axle sleeve are placed on minor axis successively; Compress axle sleeve one end and be positioned at housing, the other end stretches out housing and is connected with drive unit; Seal diaphragm, stage clip, compression axle sleeve and housing are conflicted successively mutually.
Housing rear end is provided with opening, and opening part is fixed with ring-type end cap; When stage clip is during in natural elongation state, above-mentioned compression axle sleeve and end cap are inconsistent.
In order to fit with condenser pipe or tube sheet better, housing front opening place is provided with bore seal; This bore seal is in the form of annular discs or round table-like; Bore seal is provided with the through hole being connected with housing front opening; In the time that bore seal is in the form of annular discs, on it, hole size is greater than condenser pipe mouth of pipe size to be measured, makes this leak detection detecting head not only can detect condenser pipe, can also detect the leakage of condenser pipe and tube sheet junction simultaneously; In the time that bore seal is round table-like, its point diameter is less than condenser pipe diameter to be measured, and rear end diameter is greater than condenser pipe diameter to be measured, and the detecting head that makes to hunt leak can stretch in condenser pipe and fit with condenser pipe inwall better.
Above-mentioned pressure transducer preferred negative pressure sensor.
The present invention also provides a kind of online leakage detection apparatus of condenser that adopts above-mentioned leak detection detecting head, and this leakage detection apparatus also comprises plug, plug drive unit, mechanical arm one, mechanical arm two and control system; Mechanical arm one is connected with the drive unit of leak detection detecting head; Mechanical arm two is connected with plug rear end by plug drive unit; The drive unit of pressure transducer, mechanical arm one, mechanical arm two, plug drive unit, leak detection detecting head is connected with control system respectively; In the time hunting leak, the tube sheet gluing, sealing of all sides of plug front end and condenser pipe to be measured, or plug front end stretches in condenser pipe to be measured and condenser pipe inwall gluing, sealing.
Wherein, online leakage detection apparatus also comprises plug hold down gag; Plug drive unit is connected with plug by plug hold down gag.
Plug rear end is provided with plug minor axis; Plug hold down gag comprises that plug stage clip and plug compress axle sleeve; Plug stage clip and plug compress axle sleeve and are placed on successively on plug minor axis; Plug stage clip two ends are inconsistent with plug and plug compression axle sleeve one end respectively; Plug compresses the axle sleeve other end and is connected with plug drive unit.
Plug also comprises plug housing and plug seal pad; Plug seal pad is positioned in plug housing; Plug minor axis is positioned at plug housing rear end, and is vertically connected with plug seal pad; Plug compresses axle sleeve one end and is positioned at plug housing, and the other end stretches out plug housing and is connected with plug drive unit; Plug seal pad, plug stage clip, plug compress axle sleeve and plug housing is conflicted successively mutually.
Plug housing rear end is provided with opening, and opening part is fixed with ring-type end cap; When stage clip is during in natural elongation state, plug compress axle sleeve and this end cap inconsistent.
In order to fit with condenser pipe or tube sheet better, plug housing front opening place is provided with and the identical bore seal of detecting head housing front end of hunting leak.
The present invention also provides a kind of method that adopts above-mentioned leakage detection apparatus condenser to be carried out to online leak detection, comprises the following steps:
(1) mechanical arm one, mechanical arm two lay respectively in two hydroeciums of condenser; Control system control mechanical arm one, mechanical arm two move in the plane that is parallel to condenser condenser pipe tube sheet, and accurately locate plug and leak detection detecting head respectively to two ends corresponding to condenser pipe to be measured;
(2) control system is by control hunt leak drive unit, the plug drive unit of detecting head, make respectively to hunt leak detecting head, plug moves forward, to the detecting head front end of hunting leak, plug front end respectively with condenser pipe to be measured two ends week side pipe plate gluing, sealing or with condenser pipe to be measured two ends inwall gluing, sealing;
(3) pressure that the pressure transducer that leak detection is established in detecting head is responded in region to be measured (condenser pipe to be measured or condenser pipe to be measured and with tube sheet joint) changes, and signal is transferred to control system, records and export leak detection result by control system;
(4) drive unit, the plug drive unit of control system control leak detection detecting head return back to the initial position in step (2).
The present invention has the following advantages compared to existing technology:
(1) can realize online leak detection.The present invention is owing to having adopted the mechanical arm with control system being arranged in condenser water box to realize location, and by being arranged on leak detection detecting head and the plug on mechanical arm, one by one complete the tube sheet plane shutoff to tested condenser pipe or tested condenser pipe, in condenser, form local interference-free leak detection environment, and by the leak detection detecting head that comprises pressure transducer, complete the leak detection work to measurand.This device can be realized completely online the leak detection of condenser is safeguarded in non-stop-machine situation; and condenser is due to condenser pipe huge amount; online leak detection greatly extends condenser and moves man-hour, reduces the maintenance cost of shutting down leak detection, improves the production efficiency of factory.
(2) the present invention makes full use of the vacuum characteristic that steam trap condensation chamber forms in when work and detects, and does not need to apply active signal or chemical agent.The vacuum characteristic forming in the time working just because of steam trap condensation chamber, so in the time that steam trap condensation chamber occurs to leak, no matter be condenser condenser pipe or tube sheet joint place, corresponding sealing area pressure can be lower than an atmospheric pressure, just can sensing shutoff ambient pressure variations signal and leak detection detecting head provided by the present invention is online.
(3) control procedure realizes robotization.Due to control system and mechanical arm that this device is quoted, can realize the robotization of online leak detection process, make this device easy to use, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the hunt leak structural representation of detecting head of the present invention;
Fig. 2 is the structural representation of Fig. 1 middle shell;
Fig. 3 is the hunt leak another kind of structural representation of detecting head of the present invention;
Fig. 4 is the structural representation of the online leakage detection apparatus of condenser of the present invention;
Fig. 5 is the structural representation of end cap in Fig. 4;
Fig. 6 is the structural representation of plug in Fig. 5;
Fig. 7 is the another kind of structural representation of end cap in Fig. 4.
In figure, the 1-detecting head of hunting leak, 2-mechanical arm one, 3-end cap, 4-mechanical arm two, 5-control system, 6-condenser pipe, 7-tube sheet, 1.1-housing, 1.2-pressure transducer, 1.3-stage clip, 1.4-end cap, 1.5-compresses axle sleeve, 1.6-drive unit, 1.7-pressure detection chamber, 1.8-pressure stabilizing cavity, 1.1.1-bore seal, 1.1.2-voltage stabilizing through hole, 1.1.3-seal diaphragm, 1.1.4-minor axis, 1.1.5-joint flange, 3.1-plug, 3.3-plug stage clip, 3.4-plug end cap, 3.5-plug compresses axle sleeve, 3.6-plug drive unit, 3.1.1-plug bore seal, 3.1.2-plug housing, 3.1.3-plug seal pad, 3.1.4-plug minor axis, 3.1.5-plug joint flange.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 4, the online leakage detection apparatus of condenser of the present invention comprises: leak detection detecting head 1, mechanical arm 1, end cap 3, mechanical arm 24 and control system 5.Wherein, mechanical arm 1 and mechanical arm 24 are arranged on respectively in two hydroeciums of condenser, adopt double freedom mechanical arm, can move along being parallel in the region of tube sheet 7 planes of condenser.Leak detection detecting head 1, end cap 3 are arranged on respectively on mechanical arm 1, mechanical arm 24.Control system 5 adopts PLC control system or Power Plant DCS, by operation circuit control linkage mechanical arm 1, mechanical arm 24, leak detection detecting head 1 and end cap 3.
Leak detection detecting head 1 comprises housing 1.1, pressure transducer 1.2, forms hold down gag, end cap 1.4, drive unit 1.6 by stage clip 1.3 and compression axle sleeve 1.5.Wherein, housing 1.1 front ends are provided with that bore seal 1.1.1, middle intersegmental part are provided with seal diaphragm 1.1.3, inside, rear end is coaxially provided with the minor axis 1.1.4, the afterbody that are fixed on seal diaphragm 1.1.3 and is provided with joint flange 1.1.5.Be hunt leak a kind of structure that adopts end face gluing, sealing of detecting head 1 of the present invention as shown in Figure 1 and Figure 2, the bore seal 1.1.1 that is wherein located at housing 1.1 front ends is provided with the structure that coaxial through-hole and outer shape are annulus, realizes the butt-end packing laminating to tube sheet 7 by this circular ring structure; This annulus endoporus (being through hole) is greater than the condenser pipe mouth of pipe, and (through hole can cover one or more condenser pipe mouths of pipe, its concrete size arranges according to area size to be measured), the poor condenser pipe nozzle diameter that is greater than of inside and outside circle diameter, when the tested sealing area of avoiding occurring is contained the mouth of pipe that has the non-main survey condenser pipe of part, can this mouth of pipe of effective sealing.Be illustrated in figure 3 the hunt leak another kind of detecting head 1 of the present invention and adopt the structure of conical surface gluing, sealing, wherein be located at the bore seal 1.1.1 of housing 1.1 front ends for being provided with coaxial through-hole, and the structure that outer shape is round platform, stretches into the sealing laminating of the interior realization of condenser pipe 6 and condenser pipe inwall by this frustum cone structure.
Pressure transducer 1.2 preferred negative pressure sensors, pressure transducer 1.2 is assemblied in the stage casing of housing 1.1, and housing 1.1 is divided into pressure detection chamber 1.7, pressure stabilizing cavity 1.8 former and later two cavitys.Pressure transducer 1.2 front ends are connected with housing 1.1 sealings, rear end is fixed on seal diaphragm 1.1.3, the pressure stabilizing cavity 1.8 that pressure transducer 1.2, housing 1.1 and seal diaphragm 1.1.3 surround is confined space, surround on the housing of pressure stabilizing cavity 1.8 voltage stabilizing through hole 1.1.2 is set, for being communicated with extraneous space, to guarantee in this confined space being 1 atmospheric pressure.By stage clip 1.3, compress axle sleeve 1.5 and form on the minor axis 1.1.4 of back segment that hold down gag is set in seal chamber 1.1, be fixedly connected with joint flange 1.1.5 by end cap 1.4, and make seal diaphragm 1.13, stage clip 1.3, compression axle sleeve 1.5, end cap 1.4 mutually conflict and connect, drive connection and compress axle sleeve 1.5 by drive unit 1.6, drive unit 1.6 adopts electromagnet apparatus or hydraulic cylinder or pneumatic cylinder or motor driver.
As shown in Fig. 5 or Fig. 7, end cap 3 comprises plug 3.1, forms plug hold down gag, plug drive unit 3.6 by plug stage clip 3.3 and plug compression axle sleeve 3.5.The structural similarity of the structure of this end cap 3 and leak detection detecting head 1, difference is without pressure transducer, without voltage stabilizing through-hole structure.As shown in Figure 6, plug 3.1 comprise plug housing 3.1.2, be located at plug housing 3.1.2 front end plug bore seal 3.1.1, be located at the plug seal pad 3.1.3 of intersegmental part in plug housing 3.1.2, with the coaxial plug minor axis 3.1.4 that is fixed at plug seal pad 3.1.3 rear end of plug housing 3.1.2, be located at the plug joint flange 3.1.5 of plug housing 3.1.2 afterbody.Plug 3.1 is realized with the butt-end packing of tube sheet 7 and being fitted (as shown in Figure 5) by plug bore seal 3.1.1, or fits (as shown in Figure 7) with the tube wall conical surface seal of condenser pipe 6.Hold down gag in plug hold down gag and plug drive unit 3.6 structures and leak detection detecting head, drive unit is identical: by plug stage clip 31.3, plug compresses axle sleeve 3.5 and forms on the plug minor axis 3.1.4 of back segment that plug hold down gag is set in plug housing 3.1.2, be fixedly connected with plug joint flange 3.1.5 by plug end cap 3.4, and make plug seal pad 3.13, plug stage clip 3.3, plug compresses axle sleeve 3.5, plug end cap 3.4 is mutually conflicted and is connected, and plug compression axle sleeve 3.5 drives connection by plug drive unit 3.6, plug drive unit 3.6 adopts electromagnet apparatus or hydraulic cylinder or pneumatic cylinder or motor driver.
When the online leakage detection apparatus of condenser of the present invention is hunted leak work, in the time that the outer shape of the front end of leak detection detecting head 1 and end cap 3 is circular ring structure, leak detection detecting head 1 this moment and end cap 3 simultaneously with the tube sheet 7 planar end gluing, sealings of tested condenser pipe 6; In the time that the outer shape of the front end of leak detection detecting head 1 and end cap 3 is frustum cone structure, leak detection detecting head 1 this moment and end cap 3 stretch in condenser pipe 6 and tested condenser pipe 6 inner wall sealings laminatings simultaneously.
The online leakage detection apparatus of condenser of the present invention, as follows in its control method that completes online leak detection process:
Step 1, the mechanical arm 1 that control system 5 controls are described and described mechanical arm 24 are along tube sheet 7 plane motions that are parallel to condenser condenser pipe 6, accurately location leak detection detecting head 1 and end cap 3, to the two ends corresponding to tube sheet 7 planes of tested condenser pipe 6 or tested condenser pipe 6;
Step 2, control system 5 control the leak detection detecting head 1 being installed on mechanical arm 1 and be installed on end cap 3 on mechanical arm 24 move forward simultaneously and fits with tested condenser pipe 6 inwalls or with tube sheet 7 gluing, sealings of tested condenser pipe 6.
Concrete control mode is: control system 5 is controlled the drive unit 1.6 that is arranged on leak detection detecting head 1 and the plug drive unit 3.6 on end cap 3 is worked, and drives leak detection detecting head 1 and end cap 3 to move forward and compress to be arranged on the hold down gag driving on detecting head 1 and end cap 3.
Step 3, the pressure that leak detection detecting head 1 built-in pressure transducer 1.2 is responded in tested condenser pipe 6 changes, and is converted into pressure signal and is transferred to control system 5, and control system 5 records and exports leak detection result;
Step 4, control system 5 control leak detection detecting heads 1 and end cap 3 are returned to the initial position of step 2.
Can complete the leak detection work to a certain condenser pipe or condenser pipe region (area size arranges by hole size in the bore seal of leak detection detecting head and end cap front end) by above-mentioned leak detection step, under the control of control system, repeat continuously above-mentioned steps, the online leakage detection apparatus of a kind of condenser of the present invention just can system complete the leak detection work to condenser all sidedly.
While work due to steam trap condensation chamber, there is vacuum characteristic, be cool solidifying chamber in lower than an atmospheric negative pressure state, it is mainly the joint that condenser pipe and condenser pipe are combined with tube sheet that steam trap condensation chamber occurs to leak, the present invention has adopted condenser pipe or the shutoff of condenser pipe surrounding zone, form corresponding sealing area, if there is leakage, the pressure in sealing region also can be lower than an atmospheric pressure.The condenser pipe huge amount of condenser; the work of heavy, a complicated and length consuming time to its leak detection; shut down leak detection and also reduce production hour; and then affect business economic interests; the present invention has used control system and mechanical arm, has realized automatic on-line leak detection and has controlled, and can in non-stop-machine situation, complete leak detection maintenance work; can be that enterprise is cost-saving to increase economic efficiency, there is good practical value.
Claims (10)
1. a leak detection detecting head, this leak detection detecting head is for the leak detection of condenser condenser pipe; It is characterized in that: comprise housing, pressure transducer and drive unit; Described housing front opening; Described pressure transducer is located in housing, is connected, and enclosure interior is divided into pressure detection chamber and former and later two cavitys of pressure stabilizing cavity with housing seal; Described drive unit is connected with housing rear end; In the time hunting leak, all side pipe plates of described housing front end and condenser pipe to be measured gluing, sealing, or described housing front end stretches in condenser pipe to be measured and condenser pipe inwall gluing, sealing.
2. leak detection detecting head according to claim 1, is characterized in that: described housing is provided with voltage stabilizing through hole; Described voltage stabilizing through hole is connected with described pressure stabilizing cavity.
3. leak detection detecting head according to claim 2, is characterized in that: described leak detection detecting head also comprises hold down gag; Described drive unit is connected with housing rear end by hold down gag.
4. leak detection detecting head according to claim 3, is characterized in that: in described housing, be provided with seal diaphragm and minor axis; Described seal diaphragm and housing, pressure transducer surround described pressure stabilizing cavity; Described minor axis is positioned at housing rear end, and is connected with described seal diaphragm is vertical; Described hold down gag comprises stage clip and compresses axle sleeve; Described stage clip and compression axle sleeve are placed on described minor axis successively; Described compression axle sleeve one end is positioned at housing, and the other end stretches out housing and is connected with described drive unit; Described seal diaphragm, stage clip, compression axle sleeve and housing are conflicted successively mutually.
5. leak detection detecting head according to claim 4, is characterized in that: described housing front opening place is provided with bore seal; Described bore seal is in the form of annular discs or round table-like; Described bore seal is provided with the through hole being connected with described housing front opening; In the time that described bore seal is in the form of annular discs, on it, hole size is greater than condenser pipe mouth of pipe size to be measured; In the time that described bore seal is round table-like, its point diameter is less than condenser pipe diameter to be measured, and rear end diameter is greater than condenser pipe diameter to be measured.
6. leak detection detecting head according to claim 1, is characterized in that: described pressure transducer adopts negative pressure transducer.
7. the online leakage detection apparatus of condenser that adopts the arbitrary described leak detection detecting head of claim 1 to 6, is characterized in that: the online leakage detection apparatus of described condenser also comprises plug, plug drive unit, mechanical arm one, mechanical arm two and control system; Described mechanical arm one is connected with the drive unit of described leak detection detecting head; Described mechanical arm two is connected with plug rear end by plug drive unit; The drive unit of described pressure transducer, mechanical arm one, mechanical arm two, plug drive unit, leak detection detecting head is connected with described control system respectively; In the time hunting leak, the tube sheet gluing, sealing of all sides of described plug front end and condenser pipe to be measured, or described plug front end stretches in condenser pipe to be measured and condenser pipe inwall gluing, sealing.
8. the online leakage detection apparatus of condenser according to claim 7, is characterized in that: described online leakage detection apparatus also comprises plug hold down gag; Described plug drive unit is connected with plug by plug hold down gag.
9. the online leakage detection apparatus of condenser according to claim 8, is characterized in that: described plug rear end is provided with plug minor axis; Described plug hold down gag comprises that plug stage clip and plug compress axle sleeve; Described plug stage clip and plug compress axle sleeve and are placed on successively on described plug minor axis; Described plug stage clip two ends are inconsistent with plug and plug compression axle sleeve one end respectively; Described plug compresses the axle sleeve other end and is connected with described plug drive unit.
10. adopt the online leakage detection apparatus of condenser described in claim 7 to carry out a method for condenser leakage detection, it is characterized in that: comprise the following steps:
(1) described mechanical arm one, mechanical arm two lay respectively in two hydroeciums of described condenser; Described in described control system control, mechanical arm one, mechanical arm two move in the plane that is parallel to tube sheet, and locate described plug and leak detection detecting head respectively to two ends corresponding to condenser pipe to be measured;
(2) described control system is by controlling drive unit, the plug drive unit of described leak detection detecting head, make respectively to hunt leak detecting head, plug moves forward, to the detecting head front end of hunting leak, plug front end and condenser pipe to be measured week side pipe plate gluing, sealing or with condenser pipe inwall gluing, sealing to be measured;
(3) pressure that the pressure transducer of establishing in described leak detection detecting head is responded in region to be measured changes, and signal is transferred to described control system, records and export leak detection result by described control system;
(4) hunt leak described in described control system control drive unit, the plug drive unit of detecting head returns back to the initial position in step (2).
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| CN107607272A (en) * | 2016-07-11 | 2018-01-19 | 苏州怡丰工业设备有限公司 | Disinfection cabinet sealing propertytest system |
| CN107665792A (en) * | 2017-09-19 | 2018-02-06 | 国网黑龙江省电力有限公司哈尔滨供电公司 | A kind of block head and its manufacture method for effectively preventing high-voltage circuit-breaker hydraulic mechanism oil leak |
| CN112067213A (en) * | 2020-09-24 | 2020-12-11 | 中山市台森机电设备有限公司 | Leak detection device and leak detection method |
| CN113865810A (en) * | 2021-11-19 | 2021-12-31 | 西安热工研究院有限公司 | Condenser leakage heat exchange tube positioning system and method based on pressure detection |
| CN117168690A (en) * | 2023-09-07 | 2023-12-05 | 湖南华电平江发电有限公司 | Visual condenser liquid vacuum leakage detection device and method |
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| CN107665792A (en) * | 2017-09-19 | 2018-02-06 | 国网黑龙江省电力有限公司哈尔滨供电公司 | A kind of block head and its manufacture method for effectively preventing high-voltage circuit-breaker hydraulic mechanism oil leak |
| CN112067213A (en) * | 2020-09-24 | 2020-12-11 | 中山市台森机电设备有限公司 | Leak detection device and leak detection method |
| CN113865810A (en) * | 2021-11-19 | 2021-12-31 | 西安热工研究院有限公司 | Condenser leakage heat exchange tube positioning system and method based on pressure detection |
| CN117168690A (en) * | 2023-09-07 | 2023-12-05 | 湖南华电平江发电有限公司 | Visual condenser liquid vacuum leakage detection device and method |
| CN117168690B (en) * | 2023-09-07 | 2024-03-19 | 湖南华电平江发电有限公司 | Visual condenser liquid vacuum leakage detection device and method |
| CN118882932A (en) * | 2024-10-08 | 2024-11-01 | 南通渠汇管业有限公司 | A condenser tube tightness detection device |
| CN118882932B (en) * | 2024-10-08 | 2024-12-20 | 南通渠汇管业有限公司 | Condenser pipe tightness detection equipment |
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Effective date of registration: 20170123 Address after: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee after: Nanjing Sciyon Automation Group Co., Ltd. Patentee after: Nanjing Electric Power Plant of Datang Group Address before: Water Pavilion Road Jiangning District moling street Nanjing City, Jiangsu province 211100 No. 1266 Patentee before: Nanjing Sciyon Automation Group Co., Ltd. |