Detection probe for condenser leakage detection

Abstract

The utility model belongs to the technical field of condenser leakage detection, and discloses a detection probe for condenser leakage detection, which comprises a delta wing main body, a vacuum pumping mechanism, a driving mechanism and a slide rail, the slide rail is arranged in the condenser to be detected and is arranged along a preset leak detection route of the condenser to be detected; the delta wing main body is movably arranged on the sliding rail through the driving mechanism, and the vacuum pumping mechanism is arranged below the delta wing main body; wherein an outlet of the vacuum pumping mechanism is used for being connected with a helium mass spectrometer leak detector so as to pump water vapor at a preset sampling position in the to-be-tested condenser to the helium mass spectrometer leak detector; the driving mechanism is used for driving the delta wing main body to move along the sliding rail; by introducing the delta wing main body, the resistance of the detection probe can be obviously reduced, the detection probe is ensured to move more smoothly in a medium, the leak detection efficiency is improved, and the accuracy of a leak detection result is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of condenser leakage detection, and particularly relates to a detection probe for condenser leakage detection. BACKGROUND

[0002] As important equipment of a generator set, the main function of a condenser is to promote the condensation of turbine exhaust gas by establishing and maintaining a high vacuum environment, thereby improving the utilization rate of steam and the thermal effect of the entire thermal system; when the condenser leaks, cooling water may enter the condensed water, deteriorate the vacuum degree, contaminate the condensed water, and further affect the boiler heat exchange efficiency and steam quality, and even cause equipment corrosion and pipe burst accidents.

[0003] At present, the traditional condenser leakage detection methods include hydrogen conductivity detection, water filling method, helium mass spectrometer leakage detection technology and tracer leakage detection technology; among them, in the helium mass spectrometer leakage detection technology and the tracer leakage detection technology, a detection probe is usually used to extract sample water, and then the sample water is detected to determine the leakage; however, since the existing water sample detection probe does not fully consider the influence of air power, the resistance of the detection probe when moving in air or water medium is large, which seriously affects the detection efficiency and reduces the accuracy of leakage detection. UTILITY MODEL CONTENT

[0004] In view of the technical problems existing in the prior art, the utility model provides a detection probe for condenser leakage detection, so as to solve the technical problems that the existing water sample detection probe does not fully consider the influence of air power, the resistance of the detection probe when moving in air or water medium is large, which seriously affects the detection efficiency and reduces the accuracy of leakage detection.

[0005] To achieve the above purpose, the utility model adopts the technical scheme that:

[0006] The utility model provides a detection probe for condenser leakage detection, which comprises a delta wing main body, a vacuum air extraction mechanism, a driving mechanism and a slide rail.

[0007] The slide rail is arranged in the interior of the condenser to be detected and is arranged along the preset leakage detection route of the condenser to be detected; the delta wing main body is movably arranged on the slide rail through the driving mechanism, and the vacuum air extraction mechanism is arranged below the delta wing main body; wherein the outlet of the vacuum air extraction mechanism is connected with a helium mass spectrometer to extract the water vapor at the preset sampling position in the condenser to the helium mass spectrometer; the driving mechanism is used for driving the delta wing main body to move along the slide rail

[0008] Further, the vacuum air extraction mechanism comprises a head air inlet, a vacuum pump and an air outlet pipe.

[0009] The head air inlet, the vacuum pump and the air outlet pipe are all installed below the delta wing body; wherein, the head air inlet is arranged close to the leading edge of the delta wing body, and the vacuum pump is located at the central position below the delta wing body;

[0010] The outlet of the head air inlet is connected with the inlet of the vacuum pump, the outlet of the vacuum pump is connected with the first end of the air outlet pipe, and the second end of the air outlet pipe is connected with the inlet of the helium mass spectrometer leak detector.

[0011] Further, the vacuum air extraction mechanism further comprises a filter; the filter is arranged at the inlet position of the head air inlet.

[0012] Further, the vacuum pump adopts a diaphragm type vacuum pump.

[0013] Further, the slide rail comprises a slide rail body, the slide rail body is fixed on the inner wall of the condenser to be inspected, and slide rail grooves are symmetrically arranged on the upper surface of the slide rail body along the extension direction of the slide rail body.

[0014] The driving mechanism comprises two rolling wheels, a wheel shaft, a coupling and a driver; the driver is installed at the central position of the trailing edge of the delta wing body, the output end of the driver is connected with the input end of the wheel shaft through the coupling, the wheel shaft is arranged close to the trailing edge of the delta wing body and is perpendicular to the central axis of the delta wing body.

[0015] The two rolling wheels are respectively installed at the two ends of the wheel shaft, and the two rolling wheels are correspondingly arranged in the slide rail grooves.

[0016] Further, a guide groove is further arranged at the central position of the upper surface of the slide rail body.

[0017] The driving mechanism further comprises a guide front wheel, the guide front wheel is located at the leading edge of the delta wing body and is arranged in the guide groove in cooperation.

[0018] Further, the cross section of the guide groove is in dovetail groove structure, and the cross section structure of the guide front wheel matches the cross section of the guide groove.

[0019] Further, a rubber shock pad is arranged at the groove bottom of the slide rail groove; the surface of the rubber shock pad is in contact with the rolling wheel.

[0020] Further, the delta wing body comprises a delta wing surface and a body framework, the body framework is arranged below the lower surface of the delta wing surface; the vacuum air extraction mechanism and the driving mechanism are both installed on the body framework; wherein, the whole delta wing surface is in streamline structure.

[0021] Further, the vacuum pump has a pumping speed of 8-10 L / min under standard atmospheric pressure, and a limit vacuum degree less than 50 mbar abs.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] The detection probe for condenser leakage detection provided by the utility model sets the vacuum air extraction mechanism and the driving mechanism below the delta wing body, moves the whole detection probe along the slide rail by the driving mechanism, and realizes accurate sampling of water vapor at the preset sampling position in the condenser to be detected; the utility model introduces the delta wing body, can significantly reduce the resistance of the detection probe, ensures smoother movement of the detection probe in the medium, improves the leakage detection efficiency, and effectively guarantees the accuracy of the leakage detection result.

[0024] Further, the guide front wheel is introduced in the guide mechanism, and the guide front wheel is matched and arranged in the guide groove on the slide rail, plays a guiding and limiting role, effectively prevents the detection probe from turning over or deviating from the slide rail during movement, and improves the stability of the detection process.

[0025] Further, the rubber shock pad is arranged at the groove bottom of the slide rail groove to absorb the vibration generated by the vacuum air extraction mechanism and the driving mechanism during work, thereby preventing the vibration from being transmitted to the delta wing body, and ensuring the reliability of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The utility model provides a structure schematic view of the detection probe for condenser leakage detection;

[0027] Wherein, 1 delta wing body, 2 guide front wheel, 3 filter, 4 head air inlet, 5 vacuum pump, 6 rolling wheel, 7 wheel shaft, 8 coupling, 9 driver, 10 air outlet pipe, 11 slide rail, 12 slide rail groove, 13 guide groove. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the utility model, technical scheme and beneficial effects more clearly and clearly, the following specific embodiments are used to further explain the utility model. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] As shown in the accompanying Figure 1 The utility model provides a kind of detection probe for condenser leakage detection, including delta wing body 1, vacuum air extraction mechanism, driving mechanism and slide rail 11.

[0030] The slide rail 11 is arranged inside the condenser to be detected and along the preset leakage detection route of the condenser to be detected; the slide rail 11 comprises a slide rail main body, the slide rail main body is fixed on the inner wall of the condenser to be detected, the axis of the slide rail main body coincides with the preset leakage detection route of the condenser to be detected; the upper surface of the slide rail main body is symmetrically provided with a slide rail groove 12 on both sides, the slide rail groove 12 is arranged along the extension direction of the slide rail main body; the slide rail groove 12 serves as the travel route of the rolling wheel 6 in the driving mechanism, so that the delta wing main body 1 moves along the preset leakage detection route of the condenser to be detected; the center of the upper surface of the slide rail main body is provided with a guide groove 13, the guide groove 13 is arranged along the extension direction of the slide rail main body; wherein the guide groove 13 serves as the travel route of the guide front wheel 2 in the driving mechanism, so as to limit and guide the delta wing main body 1 during movement.

[0031] The delta wing main body 1 is movably arranged on the slide rail 11 through the driving mechanism, the delta wing main body 1 serves as the main structure of the detection probe to support and install the vacuum air extraction mechanism and the driving mechanism; wherein the vacuum air extraction mechanism and the driving mechanism are both arranged below the delta wing main body 1; the outlet of the vacuum air extraction mechanism is used to be connected with the helium mass spectrometer leak detector, so as to suck the water vapor at the preset sampling position in the condenser to be detected to the helium mass spectrometer leak detector; the driving mechanism is used to drive the delta wing main body 1 to move along the slide rail 11.

[0032] The delta wing main body 1 comprises a delta wing surface and a body framework, the shape of the delta wing surface meets the requirements of aerodynamic design, and the body framework is arranged below the lower surface of the delta wing surface; specifically, the leading edge of the delta wing surface is a sharp end; the width of the delta wing surface gradually increases from the leading edge to the trailing edge; preferably, the surface of the delta wing surface is provided with a corrosion-resistant coating; the shape of the body framework matches the shape of the delta wing surface, and the inside of the body framework is pre-provided with a plurality of installation grooves and channels for installing the parts and pipelines of the vacuum air extraction mechanism and the driving mechanism; preferably, the body framework is made of aluminum alloy material with a preset strength.

[0033] The vacuum air extraction mechanism comprises a filter 3, a head air inlet 4, a vacuum pump 5 and an air outlet pipe 10, the inlet of the filter 3 is communicated with the inner cavity of the condenser to be detected, and the outlet of the filter 3 is connected with the inlet of the head air inlet 4; the outlet of the head air inlet 4 is connected with the inlet of the vacuum pump 5, the outlet of the vacuum pump 5 is connected with the first end of the air outlet pipe 10, and the second end of the air outlet pipe 10 is connected with the inlet of the helium mass spectrometer leak detector.

[0034] The filter 3, the head air inlet 4, the vacuum pump 5 and the air outlet pipe 10 are all installed below the delta wing body 1; wherein the head air inlet 4 is arranged close to the leading edge of the delta wing body 1, and the vacuum pump 5 is located at the lower center position of the delta wing body 1; specifically, the head air inlet 4 is arranged close to the leading edge head of the body framework, and the vacuum pump 5 is fixed at a preset position of the body framework by screws; the filter 3 is arranged at the inlet position of the head air inlet 4, and is used for filtering impurity ions in water vapor; wherein the inside of the filter 3 is provided with a replaceable filter element; the replaceable filter element is an inorganic filter element or an organic filter element; the pumping speed of the vacuum pump 5 under standard atmospheric pressure is 8-10 L / min, and the ultimate vacuum degree is less than 50 mbar abs; preferably, the vacuum pump 5 adopts a diaphragm type vacuum pump.

[0035] The driving mechanism comprises a guide front wheel 2, two rolling wheels 6, an axle 7, a coupling 8 and a driver 9.

[0036] The guide front wheel 2 is located at the leading edge of the delta wing body 1 and is arranged in the guide groove 13 in cooperation; specifically, the guide front wheel 2 is installed at the most front end of the leading edge of the body framework, and the guide front wheel 2 is arranged in the guide groove 13 in cooperation, so as to form a limiting and guiding effect on the delta wing body 1 under the cooperation of the guide front wheel 2 and the guide groove 13; preferably, the cross section of the guide groove 13 is a dovetail groove structure, and the cross section structure of the guide front wheel 2 matches the cross section of the guide groove 13.

[0037] The driver 9 is installed at the rear edge center of the delta wing body 1; specifically, the driver 9 is installed in a preset installation groove at the rear edge center of the body framework by screws or other fasteners; the output end of the driver 9 is connected with the input end of the axle 7 through the coupling 8; wherein the coupling 8 is arranged at the front end of the driver 9, and the input end of the driver 9 is connected with the input end of the coupling 8; the axles 7 are symmetrically arranged at both sides of the coupling 8, and the input ends of the axles 7 are respectively connected with the coupling 8; wherein the axle 7 is arranged close to the rear edge of the delta wing body 1 and is perpendicular to the central axis of the delta wing body 1; the output ends of the axles 7 are arranged away from the central axis of the delta wing body 1, and the two rolling wheels 6 are respectively installed at the two output ends of the axles 7.

[0038] Two said rolling wheels 6 are also arranged in the slide rail groove 12, the shape of the slide rail groove 12 matches the shape of the rolling wheel 6; the bottom of the slide rail groove 12 is provided with a rubber damping pad, the surface of the rubber damping pad is in contact with the rolling wheel 6; by arranging the rubber damping pad on the bottom of the slide rail groove 12, a damping design is formed between the slide rail groove 12 and the rolling wheel 6 to absorb the vibration generated by the vacuum air extraction mechanism and the driving mechanism during work, thereby preventing the vibration from being transmitted to the delta wing body 1; secondly, the damping increases the friction between the rolling wheel 6 and the slide rail groove 12, and reduces the wear of the rolling wheel 6.

[0039] Working process and principle:

[0040] The detection probe for detecting the leakage of the condenser, the working process is as follows:

[0041] When the detection probe moves, the driver 9 drives the wheel shaft 7 to rotate through the shaft coupling 8, the wheel shaft 7 drives the rolling wheel 6 to roll in the slide rail groove 12, so as to drive the delta wing body 1 and the vacuum air extraction mechanism installed thereon to move along the slide rail 11; wherein, when the rolling wheel 6 rolls in the slide rail groove 12, the guide front wheel 2 slides in the guide groove 13, so as to play a guiding and limiting role; when the detection probe reaches the preset sampling position in the condenser to be detected, the driver 9 stops working, at this time, the detection probe stays at the current preset sampling position, and water vapor sampling is started.

[0042] When water vapor sampling is needed, the vacuum pump 5 is started, and the water vapor sample at the current preset sampling position is extracted for a preset sampling time; preferably, the preset sampling time is 3-5min; after sampling is completed, the vacuum pump 5 stops working, and the driver is restarted to drive the detection probe to move to the next preset sampling position, and the operation of the next water vapor sampling is repeated.

[0043] In the utility model, the control circuit of the driver and the vacuum pump all adopt single-chip microcomputer, so that the driver and the vacuum pump operate according to a preset program; it needs to be explained that the control of the driver and the vacuum pump is not the protection point of the application, and will not be repeated here.

[0044] The utility model discloses detection probe, adopt delta wing layout structure, wherein, the shape of delta wing surface meets the aerodynamics design requirement, namely, the leading edge is relatively sharp, the trailing edge gradually widens and the whole presents streamline type, can significantly reduce the resistance, make detection probe move more smoothly in medium, improve the detection efficiency, the surface of delta wing surface is treated with anticorrosive, and the inside is equipped with the body framework, and the shape of body framework is matched with the contour of delta wing, plays the role of supporting whole wing surface and fixing internal component, effectively guarantees the structural strength and corrosion resistance of inside detection probe, avoids the damage in complex environment, guarantees the service life of probe.

[0045] In the utility model, the inside of body framework reserves a plurality of installation groove and passageway for installing filter 3, head air inlet 4, vacuum pump 5, wheel shaft 7, coupling 8 and driver 9, and arranging the line and pipeline of connecting these components, wherein, head air inlet 4 is located at the leading edge head position of delta wing body, and filter 3 is arranged at the front end of head air inlet 4, vacuum pump 5 is located at the lower center position of delta wing body, and is fixed in the preset installation groove of body framework by screw, vacuum pump 5 is connected with head air inlet 4 through the preset pipeline, and the outlet of vacuum pump 5 is connected with helium mass spectrum leak detector through air outlet pipe 10 to send the extracted water vapor to helium mass spectrum leak detector.

[0046] In the utility model, the bottom of delta wing body 1 is installed rolling wheel 6 driven by driver 9, and the two rolling wheels 6 are connected through wheel shaft 7, and driver 9 is connected with wheel shaft 7 through coupling 8, and slide rail 11 is provided with slide rail groove 12 on both sides, and rolling wheel 6 is matched and arranged in slide rail groove 12, and slide rail 11 is provided with guide groove 13 in the middle and is matched with guide front wheel 2 at the bottom of delta wing, preferably, rolling wheel 6 and guide front wheel 2 are all made of high-strength plastic rubber material.

[0047] In the utility model, vacuum air extraction mechanism and driving mechanism are all installed on body framework, can realize the effect of compact layout, significantly reduce the volume of probe, improve the space utilization, the combination design of rolling wheel and guide front wheel in driving mechanism plays the role of guiding and limiting, effectively prevents the probe from turning on one side or deviating from slide rail in the moving process, improves the stability of detection process, the utility model sets up rubber shock pad at the groove bottom of slide rail groove, can effectively absorb the vibration generated when the components such as vacuum pump work, prevents vibration from being transmitted to delta wing body, simultaneously, the connecting parts of each component of probe adopt sealing rubber strip and sealing glue to seal, further improve the stability and reliability of equipment.

[0048] The utility model discloses a detection probe for condenser leakage detection adopts the delta wing streamline main part design, surface anticorrosive treatment, is equipped with high strength aluminium alloy skeleton inside, supports the airfoil and fixes the component, and the skeleton is reserved and installs the groove and passageway in, is used to install filter, vacuum pump and driver etc. Component, optimization layout, reduce the volume, the rolling wheel and the guide front wheel of bottom match with the slide rail recess and the guide groove, ensure that the movement is stable, install the groove bottom and be equipped with rubber shock pad, reduce the vibration, each connecting position is sealed design, improve the stability, compared with prior art, the utility model significantly reduces the air resistance, improves the detection efficiency, strengthens the structural strength and the corrosion resistance, prolongs the life, realizes the automation detection through the singlechip control, promotes the detection accuracy and the efficiency, is applicable to the condenser leakage detection and other complex environment's gas detection task, has the broad application prospect.

[0049] The above embodiment is only one of the implementation manners capable of realizing the technical scheme of the utility model, and the scope of the utility model claimed is not limited by the embodiment, but also includes any changes, substitutions and other implementation manners easily thought of by any person skilled in the art within the technical scope disclosed by the utility model.

Claims

1. A detection probe for condenser leakage detection, characterized by, The device comprises a delta wing body (1), a vacuum pumping mechanism, a driving mechanism and a slide rail (11); The slide rail (11) is arranged inside the condenser to be detected and along a preset leakage detection route of the condenser to be detected; the delta wing body (1) is movably arranged on the slide rail (11) by the driving mechanism, and the vacuum pumping mechanism is arranged below the delta wing body (1); wherein the outlet of the vacuum pumping mechanism is connected with a helium mass spectrometer leak detector to pump water vapor at a preset sampling position in the condenser to the helium mass spectrometer leak detector; and the driving mechanism is used to drive the delta wing body (1) to move along the slide rail (11).

2. A detection probe for detecting a leakage of a condenser according to claim 1, wherein The vacuum pumping mechanism comprises a head air inlet (4), a vacuum pump (5) and an air outlet pipe (10); The head air inlet (4), the vacuum pump (5) and the air outlet pipe (10) are all arranged below the delta wing body (1); wherein the head air inlet (4) is arranged close to the leading edge of the delta wing body (1), and the vacuum pump (5) is arranged at a central position below the delta wing body (1); The outlet of the head air inlet (4) is connected with the inlet of the vacuum pump (5), the outlet of the vacuum pump (5) is connected with the first end of the air outlet pipe (10), and the second end of the air outlet pipe (10) is connected with the inlet of the helium mass spectrometer leak detector.

3. A detection probe for condenser leakage detection according to claim 2, wherein, The vacuum pumping mechanism further comprises a filter (3); the filter (3) is arranged at the inlet position of the head air inlet (4).

4. A detection probe for condenser leakage detection according to claim 2, wherein, The vacuum pump (5) is a diaphragm type vacuum pump.

5. A detection probe for detecting a leakage of a condenser according to claim 1, wherein The slide rail (11) comprises a slide rail body, the slide rail body is fixed on the inner wall of the condenser to be detected; the upper surface of the slide rail body is symmetrically provided with slide rail grooves (12) on both sides, and the slide rail grooves (12) are arranged along the extension direction of the slide rail body; The driving mechanism comprises two rolling wheels (6), an axle (7), a coupling (8) and a driver (9); the driver (9) is arranged at the center of the trailing edge of the delta wing body (1), the output end of the driver (9) is connected with the input end of the axle (7) through the coupling (8), the axle (7) is arranged close to the trailing edge of the delta wing body (1) and is perpendicular to the central axis of the delta wing body (1); The two rolling wheels (6) are respectively arranged at the two ends of the axle (7) and correspondingly arranged in the slide rail grooves (12).

6. A detection probe for condenser leakage detection according to claim 5, wherein, The upper surface of the slide rail body is further provided with a guide groove (13) at the center; The driving mechanism further comprises a guide front wheel (2), the guide front wheel (2) is arranged at the leading edge of the delta wing body (1) and cooperatively arranged in the guide groove (13).

7. A detection probe for condenser leakage detection according to claim 6, wherein, The cross section of the guide groove (13) is a dovetail groove structure, and the cross section structure of the guide front wheel (2) matches the cross section of the guide groove (13).

8. A detection probe for condenser leakage detection as defined in claim 5, wherein The groove bottom of the slide rail groove (12) is provided with a rubber damping pad, and the surface of the rubber damping pad is in contact with the rolling wheel (6).

9. A detection probe for condenser leakage detection as defined in claim 1, wherein, The delta wing body (1) comprises a delta wing surface and a body framework arranged below the lower surface of the delta wing surface; the vacuum pumping mechanism and the driving mechanism are both mounted on the body framework; wherein the whole of the delta wing surface is in a streamlined structure.

10. A detection probe for condenser leakage detection as claimed in claim 2, wherein, The vacuum pump (5) has a pumping speed of 8-10 L / min under standard atmospheric pressure and a limit vacuum degree less than 50 mbar abs.

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