Pipeline static pressure test tool

Abstract

A pipeline static pressure test tool comprises an input pump, a one-way solenoid valve, a pressure sensor and a butt joint assembly which are connected in series on an input pipeline. A programmable controller is connected beside the one-way solenoid valve and the pressure sensor, and the tail end of the butt joint assembly is connected with a to-be-tested pipeline. The butt joint assembly comprises a testing head, a chuck, a first sealing ring, a lining and a second sealing ring. The testing head and the clamping head are connected and attached together through a fastener. A horn-shaped channel is formed in the testing head in the direction of the input pipeline in a penetrating mode, a first step groove is formed in the large-diameter end of the horn-shaped channel, and the first sealing ring is embedded in the first step groove. A second step groove is formed in the chuck in the direction of the input pipeline in a penetrating mode, and the lining and the second sealing ring are arranged in the second step groove in an embedded mode. The tool is easy to disassemble and assemble, portable, efficient in pipeline leakproofness testing work, adaptive to pipelines to be tested of different sizes by replacing bushings of different models, and high in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft ground maintenance, in particular to a pipeline static pressure testing tool. Background Art

[0002] At present, in the pipeline maintenance work of each aircraft maintenance base of the applicant, after the pipeline is repaired, it is necessary to go to the accessory test bench to perform hydrostatic and air pressure tests to ensure that there is no leakage in the pipeline and that the quality of the pipeline repair meets the standards. The current post-repair testing technology of pipelines has the following defects:

[0003] 1. Each pipeline test requires the use of a large dedicated test bench. The test tools are fixed and bulky. The pipeline test after repair is extremely inconvenient and inefficient.

[0004] 2. There are flange pipes with different diameters on the aircraft. Each time the pipes are tested and repaired, new test heads and plugs of different sizes need to be made. The test heads are used to connect the input equipment, and the plugs are used to seal the pipe openings. This method consumes a lot of manpower, financial resources and time, is inefficient, and causes disturbances to the work process and scheduling. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pipeline static pressure test tool to overcome the deficiencies in the prior art.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A pipeline static pressure test tool comprises an input pump, a one-way solenoid valve, a pressure sensor and a docking assembly connected in series on the input pipeline; a programmable controller is connected to the one-way solenoid valve and the pressure sensor, and the end of the docking assembly is connected to the pipeline to be tested.

[0008] The docking assembly comprises a test head, a chuck, a first sealing ring, a bushing and a second sealing ring; the test head and the chuck are connected and fitted together by fasteners;

[0009] The test head has a trumpet-shaped channel extending along the direction of the input pipeline, a first step groove is provided at a large-diameter end of the trumpet-shaped channel, and a first sealing ring is embedded in the first step groove;

[0010] The chuck has a second step groove extending through it along the direction of the input pipeline, and the bushing and the second sealing ring are embedded in the second step groove.

[0011] Furthermore, one end of the bushing has a convex head, one end of the convex head of the bushing is embedded in the second step groove of the chuck, and the other end passes through the second step groove of the chuck and is threadedly connected to the pipeline to be tested.

[0012] Furthermore, one side of the second sealing ring is close to the end surface of the convex head of the bushing and is embedded in the second step groove of the chuck, and the other side corresponds to the first sealing ring.

[0013] Furthermore, the small-diameter end of the trumpet-shaped passage is provided with an internal thread threadedly connected to the input pipeline.

[0014] Furthermore, a filter is serially connected to the input pipeline between the input pump and the one-way solenoid valve.

[0015] Furthermore, a pressure relief valve is serially connected to the input pipeline between the pressure sensor and the docking assembly.

[0016] Preferably, the fastener is a fitting member of a bolt and a screw hole.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1) The pipeline static pressure test tool in this case is simple to disassemble and assemble, portable, low-cost, effectively saves manpower, financial resources and time, and is efficient in testing the tightness of the pipeline after repair.

[0019] 2) A pipeline static pressure test tool in this case can adapt to pipelines of different sizes to be tested by replacing bushings of different models. There is no need to make new test heads of different sizes each time the pipeline is tested, and it has strong applicability.

[0020] In order to more clearly understand the present invention, the following will describe the preferred implementation modes of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the principle diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the docking assembly of the utility model;

[0023] Figure 3 is a perspective view of the docking assembly of the present utility model;

[0024] Figure 4 It is an assembly diagram of the docking assembly of the utility model;

[0025] Figure 5 It is a cross-sectional view of the docking assembly of the present utility model.

[0026] Figure ID:

[0027] 1-input pump, 2-filter, 3-one-way solenoid valve, 4-pressure sensor, 5-pressure relief valve, 6-docking assembly, 7-programmable controller, 8-tube to be tested; 61-test head, 62-chuck, 63-first sealing ring, 64-bushing, 65-second sealing ring, 66-bolt; 611-trumpet-shaped channel, 612-first step groove, 621-second step groove, 641-convex head. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0030] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0031] See also Figure 1-5 The utility model provides a pipeline static pressure test tool, including an input pump 1, a filter 2, a one-way solenoid valve 3, a pressure sensor 4, a pressure relief valve 5 and a docking assembly 6 connected in series on the input pipeline, the one-way solenoid valve 3 and the pressure sensor 4 are connected to a programmable controller 7, and the end of the docking assembly 6 is connected to a pipeline 8 to be tested.

[0032] The docking assembly 6 includes a test head 61, a chuck 62, a first sealing ring 63, a bushing 64 and a second sealing ring 65; the test head 61 and the chuck 62 are connected and fitted together by fasteners, the first sealing ring 63 is embedded in the test head 61, the bushing 64 and the second sealing ring 65 are embedded in the chuck 62, and the bushing 64 is screwed on the pipeline 8 to be tested.

[0033] The test head 61 has a trumpet-shaped channel 611 extending along the direction of the input pipeline. An internal thread threaded with the input pipeline is provided at a small-diameter end of the trumpet-shaped channel 611. A first step groove 612 is provided at a large-diameter end of the trumpet-shaped channel 611. The first step groove 612 matches the first sealing ring 63. The large-diameter end of the trumpet-shaped channel 611 faces the chuck 62.

[0034] The chuck 62 has a second step groove 621 extending through it along the direction of the input pipeline. The second step groove 621 corresponds to the first step groove 612 of the test head 61 .

[0035] The first sealing ring 63 is embedded in the first step groove 612 of the test head 61 to play a sealing role.

[0036] The bushing 64 has a protrusion 641 at one end. One end of the protrusion 641 of the bushing 64 is embedded in the second step groove 621 of the clamp 62, and the other end passes through the second step groove 621 of the clamp 62 and is threadedly connected to the pipeline 8 to be tested.

[0037] In this embodiment, the bushing 64 is a replaceable accessory. Different sizes of the pipelines 8 to be tested can be adapted by bushings 64 of different models. Only one set of this tooling is needed to test pipelines 8 of different sizes, thereby enhancing adaptability.

[0038] The second sealing ring 65 has one side close to the end surface of the protrusion 641 of the bushing 64 and is embedded in the second step groove 621 of the clamp 62, and the other side corresponds to the first sealing ring 63 to play a sealing role.

[0039] Preferably, in this embodiment, the fastener is a fitting member of a bolt 66 and a screw hole.

[0040] As a preferred embodiment, in this embodiment,

[0041] The model of the input pump 1 is: EEM10202E;

[0042] Filter 2 model: 316l filter;

[0043] The model of one-way solenoid valve 3 is: Z371B;

[0044] The model of pressure sensor 4 is: OMEGA PX409;

[0045] The model of pressure relief valve 5 is: NAI-LOK;

[0046] The programmable controller 7 is a PLC controller.

[0047] A pipeline static pressure test tool in this case has the following test principle or process:

[0048] 1. The test medium gas / liquid is pumped into the input pipeline through the input pump 1, and impurities are filtered through the filter 2. The programmable controller 7 controls the opening of the one-way solenoid valve 3 according to the feedback information of the pressure sensor 4. When the pressure exceeds the preset value, the pressure relief valve 5 opens to release the pressure; the test medium of the required normal pressure is introduced into the docking assembly 6, and the docking assembly 6 is sealed and connected with the pipeline to be tested 8, and the pressure test of the repaired pipeline begins.

[0049] 2. In the docking assembly 6, the bushing 64 is a replaceable accessory. Different sizes of the bushings 64 are adapted to the pipelines 8 to be tested. Only one set of this tooling is needed to test the pipelines 8 to be tested of different sizes.

[0050] Compared with the existing technology, the pipeline static pressure testing tool in this case is simple to assemble and disassemble, portable, low-cost, effectively saves manpower, financial resources and time, and is efficient in testing the tightness of pipelines after repair. By replacing different types of bushings, it can adapt to pipelines of different sizes to be tested, and there is no need to make new test heads of different sizes each time the pipeline is tested, so it has strong applicability.

[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A pipeline static pressure test tool, characterized by: The invention comprises an input pump (1), a one-way electromagnetic valve (3), a pressure sensor (4) and a docking assembly (6) connected in series on an input pipeline; a programmable controller (7) is connected to the one-way electromagnetic valve (3) and the pressure sensor (4); and the end of the docking assembly (6) is connected to a pipeline to be tested (8); The docking assembly (6) comprises a test head (61), a chuck (62), a first sealing ring (63), a bushing (64) and a second sealing ring (65); the test head (61) and the chuck (62) are connected and fitted together by a fastener; The test head (61) has a trumpet-shaped channel (611) extending through the test head along the direction of the input pipeline, a first step groove (612) is provided at a large-diameter end of the trumpet-shaped channel (611), and a first sealing ring (63) is embedded in the first step groove (612); The clamp (62) is provided with a second step groove (621) extending through the clamp along the direction of the input pipeline, and the bushing (64) and the second sealing ring (65) are embedded in the second step groove (621).

2. A pipeline static pressure test tool according to claim 1, characterized in that: One end of the bushing (64) has a convex head (641), one end of the convex head (641) of the bushing (64) is embedded in a second step groove (621) of the clamp (62), and the other end passes through the second step groove (621) of the clamp (62) and is threadedly connected to the pipeline (8) to be tested.

3. A pipeline static pressure test tool according to claim 2, characterized in that: One side of the second sealing ring (65) is close to the end surface of the protrusion (641) of the bushing (64) and is embedded in the second step groove (621) of the clamp (62), and the other side corresponds to the first sealing ring (63).

4. A pipeline static pressure test tool according to claim 3, characterized in that: An internal thread which is threadedly connected to the input pipeline is provided at one end of the small-diameter portion of the trumpet-shaped passage (611).

5. The pipeline static pressure test tool according to claim 4, characterized in that: A filter (2) is also connected in series on the input pipeline between the input pump (1) and the one-way solenoid valve (3).

6. A pipeline static pressure test tool according to claim 5, characterized in that: A pressure relief valve (5) is also connected in series to the input pipeline between the pressure sensor (4) and the docking assembly (6).

7. The pipeline static pressure test tool according to claim 6, characterized in that: The fastener is a matching piece of a bolt (66) and a screw hole.

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