A pipeline air tightness detection tool

Abstract

The present invention relates to the field of pipeline production technology, and specifically to a pipeline air tightness detection tool, the pipeline air tightness detection tool comprising: a detection support unit, the detection support unit is provided with a plurality of guide columns, and both ends of the detection support unit are also provided with limit columns, and a pipeline body is slidably installed between the limit columns and the guide columns; and an air tightness detection mechanism, the air tightness detection mechanism is connected to the detection support unit and is sleeved on the pipeline body, wherein the air tightness detection mechanism comprises a fixed detection box, a rotating odor detection box and a drive assembly; the pipeline air tightness detection tool of the present invention has a novel structure, simple operation, and various detection methods, which is conducive to detecting the air tightness of the pipeline in a relatively short time, and can accurately determine the location of the leak, thereby improving the efficiency of the detection work and the accuracy of the detection, and avoiding safety hazards of the pipeline during subsequent use.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline production, in particular to a pipeline air tightness detection tool. Background Art

[0002] Pipeline air tightness testing is mainly used for factory inspection of the following parts: automotive hoses: steering pipes, brake pipes, air conditioning pipes, fuel pipes, cooling water pipes, radiator hoses, heater hoses, air filter hoses, turbocharger system hoses, engineering hydraulic hoses, aviation hoses and manifolds; other hard pipes or joints as well as automotive brake pumps, radiators, oil coolers, cylinder blocks; engineering hydraulic hoses are mainly used for hydraulic equipment, construction machinery, mining machinery and other hydraulic pipe bursting tests; valve bodies, cylinder barrels and other equipment that require pressure testing pressure resistance and bursting tests. Commonly used testing methods include bubble method, smear method, pressure change method, flow method and ultrasonic method.

[0003] The existing pipeline air tightness detection tooling has a single detection method. For some minor leaks in the pipeline, it takes a long time to detect, and it is difficult to determine the location of the leak, which affects the efficiency and accuracy of the detection work and poses a safety hazard to the subsequent use of the pipeline. Therefore, in view of the above situation, there is an urgent need to develop a pipeline air tightness detection tooling to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of the present invention is to provide a pipeline air tightness detection tool to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pipeline air tightness detection tool, the pipeline air tightness detection tool comprising:

[0007] A detection support unit, wherein the detection support unit is provided with a plurality of guide cylinders, and both ends of the detection support unit are further provided with limit cylinders, the limit cylinders and the guide cylinders are symmetrically arranged, and a pipe body is slidably installed between the limit cylinders and the guide cylinders; and

[0008] An airtightness detection mechanism, connected to the detection support unit and sleeved on the pipeline body, wherein the airtightness detection mechanism includes a fixed detection box, a rotating odor detection box and a drive assembly;

[0009] The fixed detection box and the rotating odor detection box are both fixedly connected to the detection support unit, and are both sleeved on the pipe body, and the driving assembly is respectively connected to the detection support unit and the rotating odor detection box;

[0010] While the fixed detection box is testing the air tightness of the pipeline body, the driving assembly drives the rotating odor detection box to rotate on the pipeline body. The rotating odor detection box collects the gas around the pipeline body while rotating on the surface of the pipeline body. The rotating odor detection box detects the air tightness of the pipeline body by detecting the odor of the collected gas.

[0011] As a further solution of the present invention: a plurality of airflow detection tubes and warning members are fixedly mounted on the fixed detection box, wherein the number of the airflow detection tubes and warning members is equal, and one end of the airflow detection tube is mounted close to the pipe body;

[0012] A fluctuation detection component is provided in the airflow detection cylinder, and the fluctuation detection component is electrically connected to the warning member.

[0013] As a further solution of the present invention: the fluctuation detection component includes:

[0014] Fluctuation detectors, the number of which is two sets, the two sets of fluctuation detectors being fixedly mounted on the inner walls of both sides of the airflow detection cylinder, and the fluctuation detectors being electrically connected to the warning member;

[0015] an elastic metal wire A, wherein the elastic metal wire A is fixedly connected to one set of the fluctuation detectors; and

[0016] An elastic metal wire B is fixedly connected to another set of the fluctuation detectors, and an end of the elastic metal wire B contacts an end of the elastic metal wire A, wherein the number of the elastic metal wire A and the elastic metal wire B is multiple.

[0017] As a further solution of the present invention: further comprising: a vent, wherein the vent is opened on the airflow detection cylinder; and

[0018] Transparent glass tubes, the number of which is equal to the number of the airflow detection tubes, and which are fixedly connected to the fixed detection box, and the transparent glass tubes are also connected to the vents, wherein flocs are provided in the transparent glass tubes.

[0019] As a further solution of the present invention, it also includes: a sponge strip, which is fixedly installed on the airflow detection cylinder and slidably connected to the pipeline body, and a detection sensor is also provided on the sponge strip.

[0020] As a further solution of the present invention: a plurality of inclined plates are fixedly mounted on the rotating odor detection box, and a plurality of guide ports are formed between the plurality of inclined plates and the rotating odor detection box;

[0021] An odor sensor is also fixedly installed in the rotating odor detection box, and the odor sensor is arranged opposite to the diversion port.

[0022] As a further solution of the present invention: the drive assembly includes:

[0023] A base plate, the base plate is fixedly connected to the detection support unit, and an arc-shaped support plate is fixedly installed on the base plate;

[0024] a first transmission wheel and a second transmission wheel, both of which are rotatably mounted on the arc-shaped support plate and are arranged opposite to the side wall of the rotary odor detection box;

[0025] A driving member, the driving member is fixedly mounted on the base plate;

[0026] a driving wheel, wherein the driving wheel is fixedly connected to the output shaft of the driving member, and the driving wheel, the first transmission wheel, and the second transmission wheel are connected via a transmission belt, and the transmission belt is also connected to the side wall of the rotating odor detection box; and

[0027] A limiting unit is connected to the rotating odor detection box and the arc-shaped support plate respectively.

[0028] As a further solution of the present invention: the limiting unit includes:

[0029] an arc-shaped slot, the arc-shaped slot being provided on the rotary odor detection box and connected to the transmission belt; and

[0030] The limiting guide wheel is multiple in number, and the multiple limiting guide wheels are rotatably mounted on the arc-shaped support plate and are rollingly connected to the arc-shaped slot.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] When it is necessary to perform an air tightness test on the pipeline, first, the pipeline body can be placed between the limiting column and the guide column on the detection support unit, wherein the entire detection tool can be composed of multiple detection support units to cope with the air tightness detection of pipeline bodies of different lengths. The ends of the limiting column and the guide column are provided with rolling balls so that the pipeline body can move horizontally on the detection support unit. In addition, before the test, one end of the pipeline body can be closed and connected to the telescopic structure, while the other end of the pipeline body is connected to the gas source, wherein the gas source can use odorous gas as the detection gas. When the gas is introduced into the pipeline body, there will be a certain amount of high-pressure gas in the pipeline body. At this time, under the push of the telescopic structure, the pipeline body can be moved horizontally on multiple detection support units. In the process of movement of the pipeline body, it will contact with multiple fixed detection boxes distributed on the detection support unit, so that the pipeline can be tested. Other parts of the main body that are not in contact with the fixed detection box are tested for air tightness. In addition, the driving component is set to drive the rotating odor detection box to rotate on the detection support unit and on the surface of the pipe body. During the rotation of the rotating odor detection box, the air on the surface of the moving pipe body will be collected to increase the concentration of the odor, and the collected odor will be tested. If odorous gas can be detected, it proves that there is a leak here. The telescopic structure drives the pipe body to reciprocate on the detection support unit, and air tightness detection work can be carried out on various parts of the pipe body in a short period of time. The operation is simple and the detection methods are diverse, which is conducive to detecting the air tightness of the pipeline in a shorter time, and can accurately determine the location of the leak, thereby improving the efficiency and accuracy of the detection work, avoiding safety hazards of the pipeline in subsequent use, providing convenience for users, and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the three-dimensional structure of the detection support unit in an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of the main structure of the pipeline body in an embodiment of the present invention.

[0035] Figure 3 Schematic diagram of the top view of the guide column part in an embodiment of the present invention.

[0036] Figure 4 Schematic diagram of the three-dimensional structure of the rotating odor detection box in an embodiment of the present invention.

[0037] Figure 5 Schematic diagram of the three-dimensional structure of the driving component in an embodiment of the present invention.

[0038] Figure 6 Schematic diagram of the three-dimensional structure of the fixed detection box part in an embodiment of the present invention.

[0039] Figure 7 Schematic diagram of the cross-sectional structure of the airflow detection tube portion in an embodiment of the present invention.

[0040] In the figure: 1-detection support unit, 2-fixed detection box, 3-rotating odor detection box, 4-arc-shaped support plate, 5-first transmission wheel, 6-pipe body, 7-limiting column, 8-guide column, 9-transmission belt, 10-driving wheel, 11-base plate, 12-airflow detection tube, 13-warning member, 14-transparent glass tube, 15-guide port, 16-driving member, 17-inclined plate, 18-arc-shaped slot, 19-limiting guide wheel, 20-second transmission wheel, 21-elastic metal wire A, 22-elastic metal wire B, 23-fluctuation detector, 24-vent, 25-sponge strip. Implementation Method

[0041] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0043] See also Figure 1-Figure 7 , an embodiment of the present invention provides a pipeline air tightness detection tool, the pipeline air tightness detection tool comprising:

[0044] A detection support unit 1, wherein the detection support unit 1 is provided with a plurality of guide cylinders 8, and a limit cylinder 7 is further provided at both ends of the detection support unit 1, wherein the limit cylinder 7 is symmetrically arranged with the guide cylinder 8, and a pipe body 6 is slidably mounted between the limit cylinder 7 and the guide cylinder 8; and

[0045] An airtightness detection mechanism, which is connected to the detection support unit 1 and sleeved on the pipe body 6, wherein the airtightness detection mechanism includes a fixed detection box 2, a rotating odor detection box 3 and a drive assembly;

[0046] The fixed detection box 2 and the rotating odor detection box 3 are both fixedly connected to the detection support unit 1, and the fixed detection box 2 and the rotating odor detection box 3 are both sleeved on the pipe body 6, and the driving assembly is connected to the detection support unit 1 and the rotating odor detection box 3 respectively;

[0047] While the fixed detection box 2 is performing air tightness testing on the pipe body 6, the driving assembly drives the rotating odor detection box 3 to rotate on the pipe body 6. The rotating odor detection box 3 collects the gas around the pipe body 6 while rotating on the surface of the pipe body 6. The rotating odor detection box 3 detects the air tightness of the pipe body 6 by detecting the odor of the collected gas.

[0048] When it is necessary to perform an air tightness test on the pipeline, first, the pipeline body 6 can be placed between the limiting column 7 and the guide column 8 on the detection support unit 1, wherein the entire detection tooling can be composed of multiple detection support units 1 to cope with the air tightness detection work of pipeline bodies 6 of different lengths. The ends of the limiting column 7 and the guide column 8 are provided with rolling balls so that the pipeline body 6 can move horizontally on the detection support unit 1. In addition, before the test, one end of the pipeline body 6 can be closed and connected to the telescopic structure, while the other end of the pipeline body 6 is connected to the gas source, wherein the gas source can use odorous gas as the detection gas. When the gas is introduced into the pipeline body 6, there will be a certain amount of high-pressure gas in the pipeline body 6. At this time, under the push of the telescopic structure, the pipeline body 6 can be moved horizontally on multiple detection support units 1, and in the process of the movement of the pipeline body 6, it will contact with multiple fixed detection boxes 2 distributed on the detection support unit 1, thereby The air tightness test can be performed on other parts of the pipe body 6 that are not in contact with the fixed detection box 2. In addition, the driving component provided can drive the rotating odor detection box 3 to rotate on the detection support unit 1 and rotate on the surface of the pipe body 6. During the rotation of the rotating odor detection box 3, the air on the surface of the moving pipe body 6 will be collected to increase the concentration of the odor, and the collected odor will be detected. If odorous gas can be detected, it proves that there is a leak here. When the telescopic structure drives the pipe body 6 to reciprocate on the detection support unit 1, the air tightness test can be performed on various parts of the pipe body 6 in a short period of time. The operation is simple and the detection methods are diverse, which is conducive to detecting the air tightness of the pipeline in a relatively short time, and can accurately determine the location of the leak, thereby improving the efficiency and accuracy of the detection work, avoiding safety hazards of the pipeline in subsequent use, providing convenience for users, and worthy of promotion.

[0049] In one embodiment of the present invention, see Figure 1-Figure 3 、 Figure 6 and Figure 7 , a plurality of airflow detection tubes 12 and warning members 13 are fixedly mounted on the fixed detection box 2, wherein the number of the airflow detection tubes 12 and the warning members 13 are equal, and one end of the airflow detection tube 12 is mounted close to the pipe body 6;

[0050] A fluctuation detection component is provided in the airflow detection tube 12 , and the fluctuation detection component is electrically connected to the warning member 13 .

[0051] See also Figure 7 , the fluctuation detection component includes:

[0052] Fluctuation detectors 23, there are two sets of the fluctuation detectors 23, the two sets of the fluctuation detectors 23 are fixedly mounted on the inner walls of both sides of the airflow detection cylinder 12, and the fluctuation detectors 23 are also electrically connected to the warning member 13;

[0053] an elastic metal wire A21, wherein the elastic metal wire A21 is fixedly connected to one set of the fluctuation detectors 23; and

[0054] The elastic metal wire B22 is fixedly connected to another set of the fluctuation detectors 23, and the end of the elastic metal wire B22 contacts the end of the elastic metal wire A21, wherein the number of the elastic metal wire A21 and the elastic metal wire B22 is multiple.

[0055] See also Figure 6 and Figure 7 , further comprising: a vent 24, the vent 24 being opened on the airflow detection tube 12; and

[0056] The transparent glass tubes 14 are equal in number to the airflow detection tubes 12 and are fixedly connected to the fixed detection box 2 . The transparent glass tubes 14 are also connected to the vents 24 . Flocculent matter is provided in the transparent glass tubes 14 .

[0057] See also Figure 1-3 and Figure 6 , further comprising: a sponge strip 25, which is fixedly mounted on the airflow detection cylinder 12 and slidably connected to the pipe body 6, and a detection sensor is also provided on the sponge strip 25.

[0058] As the pipe body 6 moves horizontally on the detection support unit 1, when the pipe body 6 leaks, the high-pressure gas in the pipe body 6 will enter the airflow detection tube 12 and contact the elastic metal wire A21 and the elastic metal wire B22, wherein a plurality of elastic metal wires A21 and the elastic metal wire B22 are arranged in a row in the airflow detection tube 12, and the airflow entering the airflow detection tube 12 at any angle can be detected. Under the action of the airflow, the elastic metal wire A21 and the elastic metal wire B22 will shake, and since the elastic metal wire A21 and the elastic metal wire B22 are light in weight, even a weak airflow will cause the elastic metal wire A21 and the elastic metal wire B22 to fluctuate. When the elastic metal wire A21 and the elastic metal wire B22 are toggled, the fluctuation detector 23 will be put into operation and start The warning piece 13, wherein the warning piece 13 can be in the form of a flashing light. Since multiple sets of airflow detection tubes 12 and warning pieces 13 are provided, the specific location of the leakage of the pipeline body 6 can be quickly locked. In addition, through the provided vents 24, the airflow will pass through the vents 24 and flow into the transparent glass tube 14, wherein flocs are suspended in the transparent glass tube 14, so that after locking the leakage position, it is convenient for the staff to confirm whether there is a real leakage, and avoid misoperation due to component failure, and through the provided sponge strips 25 and inspection sensors, during the movement of the pipeline body 6, the sponge strips 25 will be squeezed to a certain extent. When encountering a leakage on the surface of the pipeline body 6, high-pressure air will enter the sponge strips 25, thereby contacting the detection sensor, which is conducive to further improving the accuracy of the detection and avoiding omissions.

[0059] In one embodiment of the present invention, see Figure 4 and Figure 5 , a plurality of inclined plates 17 are fixedly mounted on the rotating odor detection box 3, and a plurality of guide ports 15 are formed between the plurality of inclined plates 17 and the rotating odor detection box 3;

[0060] An odor sensor is also fixedly installed in the rotating odor detection box 3 , and the odor sensor is arranged opposite to the guide port 15 .

[0061] See also Figure 1-Figure 5 , the driving assembly includes:

[0062] A base plate 11, the base plate 11 is fixedly connected to the detection support unit 1, and an arc-shaped support plate 4 is fixedly mounted on the base plate 11;

[0063] A first transmission wheel 5 and a second transmission wheel 20, both of which are rotatably mounted on the arc-shaped support plate 4 and are arranged opposite to the side wall of the rotating odor detection box 3;

[0064] A driving member 16, wherein the driving member 16 is fixedly mounted on the base plate 11;

[0065] A driving wheel 10, wherein the driving wheel 10 is fixedly connected to the output shaft of the driving member 16, and the driving wheel 10, the first transmission wheel 5, and the second transmission wheel 20 are connected via a transmission belt 9, and the transmission belt 9 is also connected to the side wall of the rotating odor detection box 3; and

[0066] A limiting unit is connected to the rotating odor detection box 3 and the arc-shaped support plate 4 respectively.

[0067] The limiting unit includes: an arc-shaped slot 18, which is provided on the rotating odor detection box 3 and connected to the transmission belt 9; and

[0068] The limiting guide wheels 19 are multiple in number, and the multiple limiting guide wheels 19 are rotatably mounted on the arc-shaped support plate 4 and are rollingly connected to the arc-shaped slot 18 .

[0069] During the process of air tightness testing of multiple fixed detection boxes 2, a driving member 16 is provided, wherein the driving member 16 can be in the form of a motor. After the driving member 16 is started, it can drive the driving wheel 10 to rotate, and the driving wheel 10 drives the first transmission wheel 5 and the second transmission wheel 20 to rotate via the transmission belt 9, wherein the transmission belt 9 forms a triangular structure through the first transmission wheel 5, the driving wheel 10 and the second transmission wheel 20, wherein the sides of the triangle are arc-shaped, one of the sides is in contact with the arc-shaped slot 18, and under the action of friction transmission, it can drive the rotating odor detection box 3 to rotate, wherein the rotating odor detection box 3 is supported and limited by the first transmission wheel 5, the second transmission wheel 20 and the multiple limiting guide wheels 19, and is always rotated in a parallel state with the arc support plate 4. During the counterclockwise rotation of the rotating odor detection box 3 (such as Figure 4 As shown in the figure, the air on the circumferential surface of the pipe body 6 will enter the rotating odor detection box 3 through multiple guide ports 15 and come into contact with the odor sensor in the rotating odor detection box 3. The odor sensor is based on the technology of chemical reaction and electrical signal conversion. As the fixed detection box 2 collects the gas, during the entire detection process, as long as an electrical signal appears, it proves that there must be a leak (there is no interference from external airflow). The pipe body 6 can then be repeatedly tested to find the specific leak location, which is conducive to further improving the effect and accuracy of pipeline air tightness detection.

[0070] It should be noted that, in the present invention, unless otherwise expressly specified or limited, the terms "sliding," "rotating," "fixed," and "provided with," etc., should be understood in a broad sense. For example, they may refer to welded connections, bolted connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise expressly specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pipeline air tightness detection tool, characterized in that: The pipeline air tightness detection tool includes: A detection support unit, wherein the detection support unit is provided with a plurality of guide cylinders, and both ends of the detection support unit are further provided with limit cylinders, the limit cylinders and the guide cylinders are symmetrically arranged, and a pipe body is slidably installed between the limit cylinders and the guide cylinders; and An airtightness detection mechanism, connected to the detection support unit and sleeved on the pipeline body, wherein the airtightness detection mechanism includes a fixed detection box, a rotating odor detection box and a drive assembly; The fixed detection box and the rotating odor detection box are both fixedly connected to the detection support unit, and are both sleeved on the pipe body, and the driving assembly is respectively connected to the detection support unit and the rotating odor detection box; While the fixed detection box is testing the air tightness of the pipeline body, the driving assembly drives the rotating odor detection box to rotate on the pipeline body. The rotating odor detection box collects the gas around the pipeline body while rotating on the surface of the pipeline body. The rotating odor detection box detects the air tightness of the pipeline body by detecting the odor of the collected gas. A plurality of airflow detection tubes and warning members are fixedly mounted on the fixed detection box, wherein the number of the airflow detection tubes and warning members is equal, and one end of the airflow detection tube is mounted close to the pipe body; a fluctuation detection component is provided in the airflow detection tube, and the fluctuation detection component is electrically connected to the warning member; The fluctuation detection assembly includes: a fluctuation detector, wherein the number of the fluctuation detectors is two sets, and the two sets of the fluctuation detectors are respectively fixedly mounted on the inner walls on both sides of the airflow detection tube, and the fluctuation detectors are also electrically connected to the warning member; an elastic metal wire A, wherein the elastic metal wire A is fixedly connected to one set of the fluctuation detectors; and an elastic metal wire B, wherein the elastic metal wire B is fixedly connected to the other set of the fluctuation detectors, and the end of the elastic metal wire B is in contact with the end of the elastic metal wire A, wherein the number of the elastic metal wire A and the elastic metal wire B is multiple.

2. The pipeline air tightness detection tool according to claim 1, characterized in that: Also includes: A vent, the vent being provided on the airflow detection tube; as well as Transparent glass tubes, the number of which is equal to the number of the airflow detection tubes, and which are fixedly connected to the fixed detection box, and the transparent glass tubes are also connected to the vents, wherein flocs are provided in the transparent glass tubes.

3. The pipeline air tightness detection tool according to claim 2, characterized in that: Also includes: A sponge strip is fixedly mounted on the airflow detection cylinder and is slidably connected to the pipeline body. A detection sensor is also provided on the sponge strip.

4. The pipeline air tightness detection tool according to any one of claims 1 to 3, characterized in that: A plurality of inclined plates are fixedly mounted on the rotating odor detection box, and a plurality of guide ports are formed between the plurality of inclined plates and the rotating odor detection box; An odor sensor is also fixedly installed in the rotating odor detection box, and the odor sensor is arranged opposite to the diversion port.

5. The pipeline air tightness detection tool according to claim 1, characterized in that: The drive assembly includes: A base plate, the base plate is fixedly connected to the detection support unit, and an arc-shaped support plate is fixedly installed on the base plate; a first transmission wheel and a second transmission wheel, both of which are rotatably mounted on the arc-shaped support plate and are arranged opposite to the side wall of the rotary odor detection box; A driving member, the driving member is fixedly mounted on the base plate; a driving wheel, wherein the driving wheel is fixedly connected to the output shaft of the driving member, and the driving wheel, the first transmission wheel, and the second transmission wheel are connected via a transmission belt, and the transmission belt is also connected to the side wall of the rotating odor detection box; and A limiting unit is connected to the rotating odor detection box and the arc-shaped support plate respectively.

6. The pipeline air tightness detection tool according to claim 5, characterized in that: The limiting unit includes: an arc-shaped slot, the arc-shaped slot being provided on the rotary odor detection box and connected to the transmission belt; and The limiting guide wheel is multiple in number, and the multiple limiting guide wheels are rotatably mounted on the arc-shaped support plate and are rollingly connected to the arc-shaped slot.

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