Air-conditioning pipeline air tightness detection device

Abstract

The invention relates to an air-tightness detection device for an air-conditioning pipeline, and belongs to the technical field of air-tightness detection. The air-tightness detection device for an air-conditioning pipeline comprises a detection box, a lifting plate is provided above the detection box for lifting, lifting electric telescopic rods for driving the lifting plate to lift and lower are fixedly provided on both sides of the detection box, a helium detector is provided on the upper side of the lifting plate, a hanging bracket is provided on the lower side of the lifting plate, a plurality of automobile air-conditioning pipelines are provided on the hanging bracket, a first sealing mechanism is provided on one side of the detection box, a second sealing mechanism is provided on the other side of the detection box, the first sealing mechanism seals one end of the plurality of automobile air-conditioning pipelines, the second sealing mechanism seals the other end of the plurality of automobile air-conditioning pipelines and pumps helium, the invention can detect a plurality of automobile air-conditioning pipelines at one time, and mark the leakage parts, and can improve the detection accuracy and efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of air tightness detection, and in particular relates to an air tightness detection device for air conditioning pipelines. Background Art

[0002] The air conditioning refrigeration system currently used in automobiles is mainly composed of compressors, condensers, expansion valves, evaporators, air conditioning pipelines and other components. The various components of the automobile air conditioning refrigeration system are often distributed in different parts of the car, which makes the automobile air conditioning pipelines crisscross in the chassis and cab like human blood vessels, but at the same time it also connects many scattered system components, so that each component can form a complete set of automobile air conditioning refrigeration system, ensuring that each component can perform its duties and work in an orderly manner. Automobile air conditioning pipelines are usually composed of aluminum tubes, air conditioning hoses and other pipeline accessories. In order to ensure that the air conditioning pipes can work normally after being filled with refrigerant, the completed air conditioning pipelines need to be tested for air tightness.

[0003] For example, in the Chinese utility model patent with the announcement number CN215767534U, entitled "A novel automobile air conditioning pipeline air tightness detection device", the invention comprises an air tightness detection pool, a lifting platform, and a cylinder. The side wall of the air tightness detection pool is provided with a water inlet and a water outlet. The air tightness detection pool is provided with an external frame. The lifting platform is arranged inside the air tightness detection pool. The four corners of the lifting platform are provided with fixing ears. The lifting platform is provided with an air guide pipe. The air guide pipe is provided with a plurality of pipeline quick-clamp joints. The cylinder is fixed on the external frame. The output end of the cylinder is connected to the fixed end. The ear is hinged and fixed, and the tested pipeline is connected to the pipeline quick-clamp joint. The tested pipeline is provided with an air pressure alarm. Although the above-mentioned prior art can perform air tightness detection on the air-conditioning duct, the automobile air-conditioning duct is generally long, and multiple sections of the automobile air-conditioning duct are connected by joints. Some of them will leak at the joints, and some automobile air-conditioning ducts will have several leaks. The leakage parts cannot be marked, and personnel are required to perform detailed inspections on the air-conditioning ducts later, which is time-consuming and labor-intensive. In order to mark the location of the leak, an air-conditioning duct air tightness detection device is now needed. Summary of the invention

[0004] The purpose of the present invention is to provide an air-conditioning pipeline air tightness detection device with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An air-tightness detection device for air-conditioning pipelines comprises a detection box, a lifting plate is provided on the upper part of the detection box, lifting electric telescopic rods for driving the lifting plate to move up and down are fixedly provided on both sides of the detection box, a helium detector is provided on the upper side of the lifting plate, a hanging bracket is provided on the lower side of the lifting plate, a plurality of automobile air-conditioning pipes are provided on the hanging bracket, a first sealing mechanism is provided on one side of the detection box, a second sealing mechanism is provided on the other side of the detection box, the first sealing mechanism seals one end of the plurality of automobile air-conditioning pipes, and the second sealing mechanism seals the other end of the plurality of automobile air-conditioning pipes and pumps helium into them.

[0007] As a further optimization scheme of the present invention, the first sealing mechanism includes a first slide plate horizontally slidably arranged on the inner side wall of the detection box, a plurality of first electric telescopic rods driving the first slide plate to slide horizontally are fixedly arranged on the outside of the detection box, a plurality of first plug rods movably connected to one end of the automobile air-conditioning duct are fixedly arranged on one side of the first slide plate, and a first sealing fitting component for sealing one end of the automobile air-conditioning duct is arranged on the outer side of one end of each of the plurality of first plug rods.

[0008] As a further optimization scheme of the present invention, the first sealing fitting component includes a first sealing airbag fixedly sleeved on one end of the first insertion rod, a first collecting pipe is fixedly arranged on one side of the first slide plate, one side of the first collecting pipe is fixedly connected with a plurality of first air inlet pipes respectively fixedly connected with the first sealing airbags, a first air pump is fixedly arranged on the outside of the detection box, an output end of the first air pump is fixedly connected with a first fixed pipe fixedly passing through the detection box, one end of the first fixed pipe is fixedly connected with a first hose fixedly connected with the first collecting pipe, and a first solenoid valve is installed on the first fixed pipe.

[0009] As a further optimization scheme of the present invention, the second sealing mechanism includes a second slide plate horizontally slidably arranged on the other side of the inner wall of the detection box, a plurality of second electric telescopic rods driving the second slide plate to slide horizontally are fixedly arranged on the outside of the detection box, an intermediate tube is fixedly arranged on one side of the second slide plate, a plurality of plugs movably connected to the other end of the automobile air-conditioning duct are fixedly connected on one side of the intermediate tube, a third hose is fixedly connected at one end of the intermediate tube, a second fixed tube fixedly connected through the detection box at one end is fixedly connected at one end of the third hose, an air supply pipe is fixedly connected at one end of the second fixed tube, a compressor fixedly connected to the air supply pipe is fixedly arranged on the outside of the detection box, a second sealing fitting assembly for sealing the other end of the automobile air-conditioning duct is provided on the outside of one end of the plurality of plugs, and a pigment feeding assembly is fixedly connected at the upper side of the second fixed tube.

[0010] As a further optimization scheme of the present invention, the second sealing fitting component includes a second sealing airbag fixedly sleeved on one end of the insertion tube, a second collecting pipe is fixedly arranged on one side of the second slide, and one side of the second collecting pipe is fixedly connected to a plurality of second air inlet pipes respectively fixedly connected to the second sealing airbags, a second air pump is fixedly arranged on the outside of the detection box, an output end of the second air pump is fixedly connected to a third fixed pipe fixedly passing through the detection box, one end of the third fixed pipe is fixedly connected to a second hose fixedly connected to the second collecting pipe, and a second solenoid valve is arranged on the third fixed pipe.

[0011] As a further optimization scheme of the present invention, the paint feeding assembly includes a paint cartridge fixedly arranged on the outside of the detection box, the lower middle end of the paint cartridge is fixedly connected with a connecting tube fixedly connected with a second fixed tube, the bottom of the paint cartridge is fixedly connected with a feeding tube connected with the side wall of the connecting tube, a push rod is vertically slidably arranged in the middle of the inner side of the paint cartridge, the lower end of the push rod is fixedly provided with a sealing plug that seals and slides with the inner side wall of the connecting tube, the upper end of the paint cartridge is fixedly provided with a reset cartridge, the inner top of the reset cartridge is fixedly provided with a reset spring, the upper end of the push rod seals and slides through the paint cartridge and extends to the inner side of the reset cartridge, the upper end of the push rod is fixedly provided with a top plate that is slidably connected to the inner side of the reset cartridge and fixedly connected to the reset spring, a plurality of stirring rods located inside the paint cartridge are fixedly arranged on the top of the push rod, a feeding tube is arranged on the upper side of the paint cartridge, a valve is arranged on the feeding tube, and an observation window is arranged on the front side of the paint cartridge.

[0012] As a further optimization scheme of the present invention, the suspension bracket includes a plurality of suspension rods fixed to the lower side of the lifting plate by fixing screws, a plurality of support plates are horizontally fixedly arranged between the plurality of suspension rods, a plurality of automobile air-conditioning ducts are arranged on the upper side of the support plates, and fixing components for fixing a plurality of automobile air-conditioning ducts are respectively arranged at both ends of the upper sides of the plurality of support plates.

[0013] As a further optimization scheme of the present invention, the fixing assembly includes lower positioning plates fixedly arranged on both ends of the upper side of the support plate, the upper side of the lower positioning plate is covered with an upper positioning plate that fixes both ends of several automobile air-conditioning ducts, and the upper positioning plate and the lower positioning plate are fixedly connected by positioning screws.

[0014] As a further optimization scheme of the present invention, a helium detector is arranged on the upper side of the lifting plate, a rubber sealing ring cooperating with the upper side of the detection box is fixedly arranged on the lower side of the lifting plate, and a gas collecting mechanism is arranged on the upper side of the lifting plate.

[0015] As a further optimization solution of the present invention, the gas collecting mechanism includes a collecting tube fixedly arranged on the upper side of the lifting plate, and a balloon is densely sleeved on the upper side of the collecting tube.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, a plurality of automobile air-conditioning ducts are installed on the upper side of a support plate, and the two ends of the automobile air-conditioning duct are fixed by a lower positioning plate and an upper positioning plate, and then the lifting plate is driven down by a lifting electric telescopic rod, so that the rubber sealing ring on the lower side of the lifting plate is pressed against the upper side of a detection box, so that the detection box is sealed, and then the first slide plate is driven to move to one side of the support plate by a first electric telescopic rod, so that a plurality of first insertion rods on one side of the first slide plate are respectively inserted into one end of the automobile air-conditioning duct, and then the gas is pumped into the inner side of the first collecting pipe through the first fixed pipe and the first hose by a first air pump, and then the gas can be pumped into the inner side of the first sealing airbag through a plurality of first air inlet pipes on one side of the first collecting pipe, so that the first sealing airbag is expanded. Since the first sealing airbag is located on the inner side of the automobile air-conditioning duct, one end of the automobile air-conditioning duct is sealed, and at the same time, the second electric telescopic rod is used to drive the first slide plate to move to one side of the support plate, so that a plurality of first insertion rods on one side of the first slide plate are respectively inserted into one end of the automobile air-conditioning duct. The rod drives the second slide plate to move toward one side of the supporting plate, so that a plurality of inserting tubes on one side of the second slide plate are inserted into the other end of the automobile air-conditioning duct, and then the second air pump pumps the gas into the interior of the second collecting pipe through the third fixed pipe and the second hose, and then pumps the gas into the interior of a plurality of second sealing airbags through a plurality of second air inlet pipes on one side of the second collecting pipe, so that the second sealing airbags expand, and the other end of the automobile air-conditioning duct can be sealed, and then the compressor compresses the helium through the gas delivery pipe, the second fixed pipe, the third hose and the intermediate pipe so that the compressed helium passes into the inner sides of a plurality of inserting tubes, and finally the compressed helium passes into the interiors of a plurality of automobile air-conditioning ducts through a plurality of inserting tubes. When the automobile air-conditioning duct leaks, it can be detected by the helium detector on the upper side of the lifting plate, so that the air tightness of the automobile air-conditioning duct can be quickly detected. Since a plurality of automobile air-conditioning ducts are detected at one time, the detection efficiency can be improved.

[0018] 2. In the present invention, when the compressed helium is introduced into the second fixed tube by the compressor, the compressed helium has a certain pressure, which will press the sealing plug to slide up on the inner side of the connecting tube, so that the sealing plug opens the lower end of the discharge pipe on the side wall of the connecting tube, so that the pigment powder in the pigment tube enters the second fixed tube through the discharge pipe. If the automobile air-conditioning duct leaks, the compressed helium will drive the pigment powder in the second fixed tube to flow together, and finally leak out through the automobile air-conditioning duct. At the leaking part, the pigment powder will rub, so that the leaking part is marked with color, which is convenient for subsequent personnel to find the leak and improve the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a first internal overall structure of the present invention;

[0020] Figure 2is a second internal overall structure schematic diagram of the present invention;

[0021] Figure 3 is a third internal overall structure schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 5 The present invention Figure 2 Enlarged view of point A in the middle;

[0024] Figure 6 The present invention Figure 2 Enlarged view of point B in the middle;

[0025] Figure 7 The present invention Figure 3 Enlarged view of point C in the middle;

[0026] Figure 8 The present invention Figure 3 Enlarged view of point D in the middle;

[0027] Fig. 9 The present invention Figure 3 Enlarged view of point E in the middle;

[0028] Fig.10 The present invention Figure 4 Enlarged view of point F in the middle.

[0029] In the figure: 1. detection box; 2. lifting plate; 3. lifting electric telescopic rod; 4. suspension bracket; 401. suspension rod; 402. support plate; 403. fixing screw; 404. lower positioning plate; 405. upper positioning plate; 406. positioning screw; 5. first sealing mechanism; 501. first slide plate; 502. first insertion rod; 503. first sealing airbag; 504. first air inlet pipe; 505. first collecting pipe; 506. first hose; 507. first fixed pipe; 508. first air pump; 509. first electric telescopic rod; 510. first solenoid valve; 6. second sealing mechanism; 601. second slide plate; 602. middle pipe; 603. insertion pipe; 604. second sealing airbag ; 605, second air inlet pipe; 606, second collecting pipe; 607, second hose; 608, third hose; 609, second fixed pipe; 610, third fixed pipe; 611, second solenoid valve; 612, second air pump; 613, connecting pipe; 614, sealing plug; 615, feeding pipe; 616, paint tube; 617, ejector rod; 618, stirring rod; 619, top plate; 620, reset spring; 621, reset tube; 622, feeding pipe; 623, gas pipe; 624, compressor; 625, second electric telescopic rod; 7, helium detector; 8, gas collecting mechanism; 801, collecting pipe; 802, balloon; 9, automobile air conditioning duct; 10, rubber sealing ring. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8As shown, an air-tightness detection device for air-conditioning pipelines comprises a detection box 1, a lifting plate 2 is provided above the detection box 1 for lifting, lifting electric telescopic rods 3 for driving the lifting plate 2 to lift are fixedly provided on both sides of the detection box 1, a rubber sealing ring 10 for matching with the upper side of the detection box 1 is fixedly provided on the lower side of the lifting plate 2, a helium detector 7 is provided on the upper side of the lifting plate 2, the helium detector 7 is used to detect helium leaking into the detection box 1, a hanging bracket 4 is provided on the lower side of the lifting plate 2, the hanging bracket 4 comprises a plurality of hanging rods 401 fixed to the lower side of the lifting plate 2 by fixing screws 403, a rubber sealing gasket can be provided on the fixing screws 403, so that the connection between the lifting plate 2 and the hanging rod 401 can be sealed to prevent affecting the subsequent airtightness The present embodiment has four hanging rods 401, and the specific number can be flexibly selected according to the process. A number of support plates 402 are horizontally fixedly arranged between the four hanging rods 401. The present embodiment has two support plates 402, and the specific number can be flexibly selected according to the process. A number of automobile air-conditioning ducts 9 are arranged on the upper side of the support plates 402, and lower positioning plates 404 are fixedly arranged at both ends of the upper sides of the two support plates 402. The upper side of the lower positioning plate 404 is covered with an upper positioning plate 405 for fixing the two ends of the number of automobile air-conditioning ducts 9. The upper positioning plate 405 and the lower positioning plate 404 are both provided with a semicircular positioning groove (not shown in the figure) on one side where the upper positioning plate 405 and the lower positioning plate 404 are close to each other. The semicircular positioning groove cooperates to fix the two ends of the automobile air-conditioning duct 9, and the upper positioning plate 405 and the lower positioning plate 404 are fixedly connected by positioning screws 406. When in use, the two ends of several automobile air-conditioning ducts 9 are respectively placed on the inner sides of the semicircular positioning grooves on the upper side of the lower positioning plate 404, and then the upper positioning plate 405 is covered on the upper side of the lower positioning plate 404, and the upper positioning plate 405 is fixed to the upper side of the lower positioning plate 404 by the positioning screws 406 at the same time, so that several automobile air-conditioning ducts 9 can be fixed on the upper side of the support plate 402. Since there are two support plates 402, several automobile air-conditioning ducts 9 can be set on the upper side of each support plate 402, and one automobile air-conditioning duct 9 can pass through several automobiles. The air-conditioning duct sections are connected, and the connection parts are connected by actual connectors. The air-tightness test of the automobile air-conditioning duct 9 connector parts can be carried out, which can improve the efficiency of the air-tightness test of the automobile air-conditioning duct 9 at one time. When the automobile air-conditioning ducts 9 on all the support plates 402 are installed, the lifting plate 2 is driven to the highest point by the lifting electric telescopic rod 3, and then the four hanging rods 401 are fixed to the lower side of the lifting plate 2 by the fixing screws 403. During the installation on the lower side of the lifting plate 2, the auxiliary plate (not shown in the figure) can be used for installation. The auxiliary plate is set on the upper side of the detection box 1, and then the hanging bracket 4 is supported on the upper side of the auxiliary plate. The entire installation and disassembly can be completed by one person, thereby improving the practicality of the device.

[0032] In this solution, two or more groups of suspension brackets 4 can be set. When one group of suspension brackets 4 is installed on the lower side of the lifting plate 2, the other group of suspension brackets 4 can install the remaining automobile air-conditioning ducts 9 that need to be inspected on the support plate 402 on the outside of the inspection box 1. After the inspection of the automobile air-conditioning ducts 9 on the current group of suspension brackets 4 is completed, it is only necessary to install the next group of suspension brackets 4 and several automobile air-conditioning ducts 9 thereon to the lower side of the lifting plate 2, thereby reducing the replacement time of the automobile air-conditioning duct 9 inspection and thus improving the inspection efficiency.

[0033] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7As shown, a plurality of automobile air-conditioning pipes 9 are arranged on the suspension bracket 4, a first sealing mechanism 5 is arranged on one side of the detection box 1, and the first sealing mechanism 5 seals one end of the plurality of automobile air-conditioning pipes 9. The first sealing mechanism 5 includes a first slide plate 501 horizontally slidably arranged on the inner side wall of the detection box 1, and a plurality of first electric telescopic rods 509 driving the first slide plate 501 to slide horizontally are fixedly arranged on the outer side of the detection box 1, and a plurality of first plug rods 502 movably plugged with one end of the automobile air-conditioning pipe 9 are fixedly arranged on one side of the first slide plate 501, the diameter of the first plug rod 502 is smaller than the inner diameter of the automobile air-conditioning pipe 9, and a first sealing airbag is fixedly sleeved on one end of the first plug rod 502 503, the first sealed airbag 503 is made of rubber material, a first collecting pipe 505 is fixedly arranged on one side of the first slide plate 501, and a plurality of first air inlet pipes 504 are fixedly connected to one side of the first collecting pipe 505, which are respectively fixedly connected to the first sealed airbag 503, and the first air inlet pipe 504 is connected to the side wall of the first sealed airbag 503 to avoid affecting the sealing performance of the first sealed airbag 503 and the inner wall of the automobile air conditioning duct 9 when the first sealed airbag 503 is expanded, and a first air pump 508 is fixedly arranged on the outside of the detection box 1, and the output end of the first air pump 508 is fixedly connected to a first fixed pipe 507 that is fixedly penetrated through the detection box 1, and one end of the first fixed pipe 507 is fixedly connected to the first fixed pipe 507. The first fixed pipe 507 is connected with a first hose 506 which is fixedly connected with the first collecting pipe 505. The first solenoid valve 510 is installed on the first fixed pipe 507. When in use, when the lifting electric telescopic rod 3 drives the lifting plate 2 to descend, and the lifting plate 2 seals the upper end opening of the detection box 1, the suspension bracket 4 on the lower side of the lifting plate 2 falls into the interior of the detection box 1, and then the first electric telescopic rod 509 drives the first slide plate 501 to move to one side of the support plate 402, so that the first insertion rods 502 on one side of the first slide plate 501 are respectively inserted into one end of the automobile air conditioning duct 9. At this time, the first insertion rod 502 causes the first sealing airbag 503 thereon to be inserted into the automobile together with the first sealing airbag 503. The inside of the automobile air-conditioning duct 9, and then the gas is pumped into the inner side of the first collecting pipe 505 through the first fixed pipe 507 and the first hose 506 by the first air pump 508, and the gas can be pumped into the inner side of the first sealed airbag 503 through several first air inlet pipes 504 on one side of the first collecting pipe 505, so that the first sealed airbag 503 expands. Since the first sealed airbag 503 is located on the inner side of the automobile air-conditioning duct 9, the first sealed airbag 503 expands in the gap between the first insertion rod 502 and the automobile air-conditioning duct 9, so that one end of the automobile air-conditioning duct 9 is sealed to prevent air leakage during the air-tightness detection process, thereby affecting the detection accuracy.

[0034] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig. 9 , Fig.10As shown, a second sealing mechanism 6 is provided on the other side of the detection box 1, and the second sealing mechanism 6 includes a second slide plate 601 horizontally slidably provided on the other side of the inner wall of the detection box 1, and a plurality of second electric telescopic rods 625 for driving the second slide plate 601 to slide horizontally are fixedly provided on the outer side of the detection box 1, and an intermediate tube 602 is fixedly provided on one side of the second slide plate 601, and a plurality of plugs 603 movably plugged with the other end of the automobile air-conditioning duct 9 are fixedly connected on one side of the intermediate tube 602, and the diameter of the plugs 603 is smaller than the inner diameter of the automobile air-conditioning duct 9, and one end of the intermediate tube 602 is fixedly connected with a third hose 608, and one end of the third hose 608 is fixedly connected with a second fixed tube 609 fixedly penetrating the detection box 1, and the second fixed tube One end of 609 is fixedly connected with an air delivery pipe 623, and a compressor 624 fixedly connected with the air delivery pipe 623 is fixedly arranged on the outside of the detection box 1, and the air inlet end of the compressor 624 is connected to a helium tank (not shown in the figure), so that the compressor 624 can compress the helium and pass the compressed helium into the interior of the automobile air conditioning pipe 9. Since the helium is relatively stable, there is no danger in the process of compression detection, which improves the safety of the detection. During use, it is not limited to connecting the helium tank to the air inlet end of the compressor 624. One end of the intubation tube 603 is fixedly sleeved with a second sealing airbag 604, and one side of the second slide plate 601 is fixedly provided with a second collecting pipe 606, and one side of the second collecting pipe 606 is fixedly connected There are several second air inlet pipes 605 respectively connected with the second sealed airbags 604, the second air inlet pipes 605 are connected with the side wall of the second sealed airbags 604 to avoid the second sealed airbags 604 expanding and affecting the fitting effect with the inner wall of the automobile air conditioning duct 9. A second air pump 612 is fixedly arranged on the outer side of the detection box 1, and the output end of the second air pump 612 is fixedly connected with a third fixed pipe 610 fixedly penetrating the detection box 1, and one end of the third fixed pipe 610 is fixedly connected with a second hose 607 fixedly connected with the second collecting pipe 606, and a second solenoid valve 611 is arranged on the third fixed pipe 610. When in use, when several automobile air conditioning ducts 9 are lowered together with the suspension bracket 4 and the lifting plate 2, and several When the automobile air-conditioning duct 9 descends to the interior of the detection box 1, at this time, the second slide plate 601 is driven by the second electric telescopic rod 625 to move to the side of the support plate 402, so that the multiple insertion tubes 603 on one side of the second slide plate 601 are inserted into the other end of the automobile air-conditioning duct 9, and then the second air pump 612 pumps the gas into the interior of the second collecting pipe 606 through the third fixed pipe 610 and the second hose 607, and then the gas is pumped into the interior of the multiple second sealing air bags 604 through the multiple second air inlet pipes 605 on one side of the second collecting pipe 606, so that the second sealing air bags 604 expand in the gap between the insertion tube 603 and the inner wall of the automobile air-conditioning duct 9, so that the other end of the automobile air-conditioning duct 9 can be sealed.

[0035] like Figure 2 , Figure 3 、 Figure 4 、 Figure 5 、 Fig.10As shown, the upper side of the second fixed tube 609 is fixedly connected with a pigment discharge assembly, and the pigment discharge assembly includes a pigment cartridge 616 fixedly arranged on the outside of the detection box 1, and pigment powder is stored inside the pigment cartridge 616. The pigment powder can be in a color that is easy to identify, such as red powder or yellow powder. The middle of the lower end of the pigment cartridge 616 is fixedly connected with a connecting tube 613 that is fixedly connected to the second fixed tube 609, and the bottom of the pigment cartridge 616 is fixedly connected with a discharge tube 615 that is connected to the side wall of the connecting tube 613. The arc of the lower end of the discharge tube 615 is inclined downward and connected to the connecting tube 613, so that the pigment powder inside the discharge tube 615 can slide into the inside of the connecting tube 613, and then the pigment powder can fall into the inside of the second fixed tube 609. A push rod 617 is vertically slidably provided in the middle of the inner side of the barrel 616, and a sealing plug 614 is fixedly provided at the lower end of the push rod 617, which is sealed and slidably connected to the inner wall of the connecting tube 613. A reset tube 621 is fixedly provided at the upper end of the pigment barrel 616, and a reset spring 620 is fixedly provided at the inner top of the reset tube 621. The upper end of the push rod 617 seals and slides through the pigment barrel 616 and extends to the inner side of the reset tube 621. A top plate 619 is fixedly provided at the upper end of the push rod 617, which is slidably connected to the inner side of the reset tube 621 and fixedly connected to the reset spring 620. The reset spring 620 can push the top plate 619 down, so that the push rod 617 on the lower side of the top plate 619 slides down, so that the sealing plug 614 at the lower end of the push rod 617 can naturally release the material discharge tube. The lower end of the paint tube 615 is sealed, and a plurality of stirring rods 618 located on the inner side of the paint tube 616 are fixedly arranged on the top of the push rod 617. When the compressed helium in the second fixed tube 609 squeezes the sealing plug 614 to slide up inside the connecting tube 613, and then pushes the push rod 617 on the upper side of the sealing plug 614 to slide up on the inner side of the paint tube 616, the stirring rod 618 on the outer side of the push rod 617 can be driven to move up and down on the inner side of the paint tube 616, so that the paint powder is stirred and dispersed up and down, which is convenient for the paint powder to be discharged into the inside of the discharge pipe 615, thereby improving the discharge effect of the paint powder and preventing the paint powder from stacking together and affecting the discharge effect. A feeding pipe 622 is arranged on the upper side of the paint tube 616, and a valve is arranged on the feeding pipe 622. An observation window is provided on the front side of the barrel 616. When in use, when the compressor 624 passes the compressed helium into the second fixed tube 609, since the compressed helium has a certain pressure and the connecting tube 613 is connected to the second fixed tube 609, the sealing plug 614 will be pressed to slide up on the inner side of the connecting tube 613, so that the sealing plug 614 opens the lower end of the discharge tube 615 on the side wall of the connecting tube 613, so that the pigment powder in the pigment barrel 616 enters the second fixed tube 609 through the discharge tube 615. If one or more of the automobile air-conditioning ducts 9 leak, the compressed helium will drive the pigment powder in the second fixed tube 609 to flow together, and finally spray out through the leaking part of the automobile air-conditioning duct 9. At the leaking part,The pigment powder will cause friction, so that the leaking part is marked with color, which is convenient for subsequent personnel to find the leaking part and improves the accuracy of detection. If the automobile air-conditioning duct 9 does not leak, the outer side of the automobile air-conditioning duct 9 will not be marked with color.

[0036] Embodiment 2: Based on embodiment 1, further improvement is made in that Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a gas collecting mechanism 8 is provided on the upper side of the lifting plate 2, and the gas collecting mechanism 8 includes a collecting tube 801 fixedly provided on the upper side of the lifting plate 2, and a valve (not shown in the figure) is provided on the collecting tube 801, and a balloon 802 is provided on the upper sealing sleeve of the collecting tube 801. When in use, one end of the balloon 802 is fixed to the upper end of the collecting tube 801 by a strap, and when a gas leak occurs in the automobile air-conditioning duct 9, helium will enter the interior of the detection box 1. Since the helium inside the automobile air-conditioning duct 9 has a certain pressure, the helium entering the interior of the detection box 1 will drive the balloon 802 to expand. Since the density of helium is less than that of air, the helium will enter the interior of the balloon 802 and expand the balloon 802. On the one hand, the helium can be collected, and on the other hand, it can remind personnel.

[0037] It should be noted that, when using this air-conditioning pipeline air-tightness detection device, the two ends of a number of automobile air-conditioning pipes 9 are respectively placed on the inner sides of the semicircular positioning grooves on the upper side of the lower positioning plate 404, and then the upper positioning plate 405 is covered on the upper side of the lower positioning plate 404, and at the same time, the upper positioning plate 405 is fixed to the upper side of the lower positioning plate 404 by the positioning screws 406, so that a number of automobile air-conditioning pipes 9 can be fixed on the upper side of the support plate 402, and the lifting plate 2 is driven to rise to the highest point by the lifting electric telescopic rod 3, and then the four hanging rods 401 are fixed to the lower side of the lifting plate 2 by the fixing screws 403, and then the lifting plate 2 is driven to descend by the lifting electric telescopic rod 3, so that the rubber sealing ring 10 on the lower side of the lifting plate 2 is pressed tightly on the detection The upper end of the measuring box 1 is then driven by the first electric telescopic rod 509 to move the first slide plate 501 to one side of the support plate 402, so that the first plug rods 502 on one side of the first slide plate 501 are respectively inserted into one end of the automobile air-conditioning duct 9. At this time, the first plug rod 502 causes the first sealed airbag 503 thereon to be inserted into the interior of the automobile air-conditioning duct 9 together, and then the gas is pumped into the inner side of the first collecting pipe 505 through the first fixed pipe 507 and the first hose 506 by the first air pump 508, and the gas can be pumped into the inner side of the first sealed airbag 503 through the first air inlet pipes 504 on one side of the first collecting pipe 505, so that the first sealed airbag 503 expands. Since the first sealed airbag 503 is located in the automobile air-conditioning duct The first sealing airbag 503 expands in the gap between the first insertion rod 502 and the automobile air-conditioning duct 9, so that one end of the automobile air-conditioning duct 9 is sealed, and then the second slide plate 601 is driven to move to one side of the support plate 402 by the second electric telescopic rod 625, so that the plurality of insertion tubes 603 on one side of the second slide plate 601 are inserted into the other end of the automobile air-conditioning duct 9, and then the second air pump 612 pumps the gas into the second collection pipe 606 through the third fixed pipe 610 and the second hose 607, and then pumps the gas into the plurality of second sealing airbags 604 through the plurality of second air inlet pipes 605 on one side of the second collection pipe 606, so that the second sealing airbags 604 are in the gap between the insertion tube 603 and the automobile air-conditioning duct 9. By expanding the gap between the inner walls of the connecting pipe 9, the other end of the automobile air-conditioning pipe 9 can be sealed, and then the compressed helium is passed into the second fixed pipe 609 through the gas pipe 623 by the compressor 624, and then enters the middle pipe 602 through the third hose 608 at one end of the second fixed pipe 609, so that the compressed helium enters the interior of the plurality of inserting tubes 603, and the compressed helium enters the interior of the plurality of automobile air-conditioning pipes 9, so that the automobile air-conditioning pipe 9 is filled with compressed helium of a certain pressure. At this time, due to the presence of a certain air pressure inside the second fixed pipe 609, the sealing plug 614 is pressed to slide on the inner side of the connecting pipe 613, so that the sealing plug 614 opens the lower end of the feeding pipe 615 on the side wall of the connecting pipe 613,The pigment powder in the pigment tube 616 enters the second fixed tube 609 through the feed tube 615. If the automobile air conditioning duct 9 or the connector leaks, the helium in the automobile air conditioning duct 9 will enter the detection box 1 through the leak. At the same time, the compressor 624 will continue to pump compressed helium into the second fixed tube 609 to make the helium flow. The flowing helium will drive the pigment powder in the second fixed tube 609 to flow together, and finally leak out through the automobile air conditioning duct 9. At the leaking part, the pigment powder will rub, so that the leaking part is marked with color.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An air-tightness detection device for air-conditioning pipelines, comprising a detection box (1), characterized in that: A lifting plate (2) is provided above the detection box (1) for lifting, and lifting electric telescopic rods (3) for driving the lifting plate (2) to move upward and downward are fixedly provided on both sides of the detection box (1). A helium detector (7) is provided on the upper side of the lifting plate (2), and a suspension bracket (4) is provided on the lower side of the lifting plate (2). A plurality of automobile air-conditioning pipes (9) are provided on the suspension bracket (4). A first sealing mechanism (5) is provided on one side of the detection box (1), and a second sealing mechanism (6) is provided on the other side of the detection box (1). The first sealing mechanism (5) seals one end of the plurality of automobile air-conditioning pipes (9), and the second sealing mechanism (6) seals the other end of the plurality of automobile air-conditioning pipes (9) and pumps helium into the pipes; The first sealing mechanism (5) comprises a first slide plate (501) horizontally slidably arranged on the inner side wall of the detection box (1); a plurality of first electric telescopic rods (509) for driving the first slide plate (501) to slide horizontally are fixedly arranged on the outer side of the detection box (1); a plurality of first plug rods (502) movably plugged with one end of the automobile air conditioning duct (9) are fixedly arranged on one side of the first slide plate (501); and a first sealing fitting component for sealing one end of the automobile air conditioning duct (9) is arranged on the outer side of one end of each of the plurality of first plug rods (502); The first sealing fitting component comprises a first sealing airbag (503) fixedly sleeved on one end of a first insertion rod (502); a first collecting pipe (505) is fixedly arranged on one side of the first slide plate (501); one side of the first collecting pipe (505) is fixedly connected to a plurality of first air inlet pipes (504) respectively fixedly connected to the first sealing airbag (503); a first air pump (508) is fixedly arranged on the outside of the detection box (1); an output end of the first air pump (508) is fixedly connected to a first fixed pipe (507) fixedly penetrating the detection box (1); one end of the first fixed pipe (507) is fixedly connected to a first hose (506) fixedly connected to the first collecting pipe (505); and a first solenoid valve (510) is installed on the first fixed pipe (507).

2. The air tightness detection device for air conditioning pipeline according to claim 1, characterized in that: The second sealing mechanism (6) comprises a second slide plate (601) which is horizontally slidably arranged on the other side of the inner wall of the detection box (1); a plurality of second electric telescopic rods (625) which drive the second slide plate (601) to slide horizontally are fixedly arranged on the outer side of the detection box (1); an intermediate tube (602) is fixedly arranged on one side of the second slide plate (601); a plurality of plugs (603) which are movably plugged into the other end of the automobile air conditioning duct (9) are fixedly connected to one side of the intermediate tube (602); and a third hose is fixedly connected to one end of the intermediate tube (602). (608), one end of the third hose (608) is fixedly connected to a second fixed tube (609) fixedly penetrating the detection box (1), one end of the second fixed tube (609) is fixedly connected to an air supply pipe (623), a compressor (624) fixedly connected to the air supply pipe (623) is fixedly arranged on the outside of the detection box (1), a second sealing assembly for sealing the other end of the automobile air conditioning duct (9) is arranged on the outside of one end of the plurality of the insert tubes (603), and a pigment feeding assembly is fixedly connected to the upper side of the second fixed tube (609).

3. The air-tightness detection device for air-conditioning pipeline according to claim 2, characterized in that: The second sealing fitting component comprises a second sealing airbag (604) fixedly sleeved on one end of the insertion tube (603); a second collecting pipe (606) is fixedly arranged on one side of the second slide plate (601); one side of the second collecting pipe (606) is fixedly connected to a plurality of second air inlet pipes (605) respectively fixedly connected to the second sealing airbag (604); a second air pump (612) is fixedly arranged on the outer side of the detection box (1); an output end of the second air pump (612) is fixedly connected to a third fixed pipe (610) fixedly penetrating the detection box (1); one end of the third fixed pipe (610) is fixedly connected to a second hose (607) fixedly connected to the second collecting pipe (606); and a second solenoid valve (611) is arranged on the third fixed pipe (610).

4. The air-tightness detection device for air-conditioning pipelines according to claim 3 is characterized in that: The paint unloading assembly comprises a paint cartridge (616) fixedly arranged on the outside of the detection box (1); a connecting tube (613) fixedly connected to a second fixed tube (609) is fixedly connected in the middle of the lower end of the paint cartridge (616); a unloading tube (615) connected to the side wall of the connecting tube (613) is fixedly connected in the bottom of the paint cartridge (616); a push rod (617) is vertically slidably arranged in the middle of the inner side of the paint cartridge (616); a sealing plug (614) is fixedly arranged at the lower end of the push rod (617) and is sealed and slidably arranged with the inner side wall of the connecting tube (613); a reset tube (621) is fixedly arranged at the upper end of the paint cartridge (616); and the reset tube (621) is fixedly arranged at the bottom of the paint cartridge (616). A return spring (620) is fixedly arranged on the inner top of the pigment tube (621); the upper end of the push rod (617) is sealed and slidably penetrates the pigment tube (616) and extends to the inner side of the return tube (621); the upper end of the push rod (617) is fixedly arranged with a top plate (619) which is slidably connected to the inner side of the return tube (621) and fixedly connected to the return spring (620); a plurality of stirring rods (618) located inside the pigment tube (616) are fixedly arranged on the push rod (617); a feeding tube (622) is arranged on the upper side of the pigment tube (616); a valve is arranged on the feeding tube (622); and an observation window is arranged on the front side of the pigment tube (616).

5. The air-tightness detection device for air-conditioning pipeline according to claim 4, characterized in that: The suspension bracket (4) comprises a plurality of suspension rods (401) fixed to the lower side of the lifting plate (2) by means of fixing screws (403); a plurality of support plates (402) are horizontally fixedly arranged between the plurality of suspension rods (401); a plurality of automobile air conditioning ducts (9) are arranged on the upper side of the support plates (402); and fixing components for fixing the plurality of automobile air conditioning ducts (9) are respectively arranged at both ends of the upper side of the plurality of support plates (402).

6. The air-tightness detection device for air-conditioning pipeline according to claim 5, characterized in that: The fixing assembly comprises lower positioning plates (404) fixedly arranged at both ends of the upper side of the support plate (402); the upper side of the lower positioning plate (404) is covered with an upper positioning plate (405) for fixing both ends of a plurality of automobile air conditioning ducts (9); the upper positioning plate (405) and the lower positioning plate (404) are fixedly connected via positioning screws (406).

7. An air-conditioning pipeline air tightness detection device according to any one of claims 1 to 6, characterized in that: A rubber sealing ring (10) that cooperates with the upper side of the detection box (1) is fixedly arranged on the lower side of the lifting plate (2), and a gas collecting mechanism (8) is arranged on the upper side of the lifting plate (2).

8. The air-tightness detection device for air-conditioning pipelines according to claim 7, characterized in that: The gas collecting mechanism (8) comprises a collecting pipe (801) fixedly arranged on the upper side of the lifting plate (2), and a balloon (802) is provided on the upper sealing sleeve of the collecting pipe (801).

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