A finished pressure test head

Abstract

This utility model discloses a finished pressure testing head, including a U-shaped frame. Two supports are fixedly connected to the top of the U-shaped frame, and the top of the two supports is fixedly connected to the same arc-shaped pipe support frame. A pipe body is placed inside the arc-shaped pipe support frame. Two L-shaped frames are fixedly connected to the outer wall of the U-shaped frame, and electric push rods are fixedly connected to the top of each of the two L-shaped frames. A mating sleeve is fixedly connected to the outer wall of the output end of each of the two electric push rods, and a mating rod is slidably connected to the inner wall of each of the two mating sleeves. This utility model uses electric push rods to drive the two head bodies to move relative to each other, blocking both ends of the pipe body. Then, a pneumatic pump drives the rubber expansion sleeves to expand radially, making them tightly fit against the inner wall of the pipe body, forming a dynamic seal. Compared with traditional end-face seals (such as O-rings), this is better suited to high-pressure and long-term testing requirements, reduces the risk of media leakage, and ensures the accuracy of test data.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing head technology, and in particular to a finished pressure testing head. Background Technology

[0002] Pressure testing heads (also known as pressure testing plugs) are key tools in pipeline pressure testing and maintenance operations. They are mainly used to seal pipeline ports, ensuring the sealing of the medium and the safety of the system during pressure testing. A typical structure consists of a pair of heads and an intermediate connecting pipe, connected to the pipeline end by mechanical fastening or welding to form a temporary closed system. This is suitable for various operating conditions, including water pipes, gas pipes, and refrigeration / heating pipelines. In traditional pipeline construction, the pressure testing process needs to verify the pipeline's pressure-bearing capacity and sealing performance, and the reliability of the port closure directly affects the test results.

[0003] In existing technologies, traditional pressure testing heads are usually fixed by bolts or manual tightening, which requires manual adjustment and alignment and uses multiple fasteners. This is not only time-consuming and labor-intensive, but also prone to thread wear during frequent disassembly and assembly, affecting the sealing effect. Most heads rely on rubber gaskets or O-rings for end face sealing, but under high pressure or long-term testing, rubber is prone to aging and deformation, leading to seal failure, medium leakage, and affecting the accuracy of test data. Therefore, we propose a finished pressure testing head to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and to propose a finished product pressure test head.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A finished pressure-testing end cap includes a U-shaped frame. Two supports are fixedly connected to the top of the U-shaped frame. A single arc-shaped pipe support frame is fixedly connected to the top of the two supports. A pipe body is placed inside the arc-shaped pipe support frame. Two L-shaped frames are fixedly connected to the outer wall of the U-shaped frame. Electric push rods are fixedly connected to the top of each of the two L-shaped frames. A mating sleeve is fixedly connected to the outer wall of the output end of each of the two electric push rods. A mating rod is slidably connected to the inner wall of each of the two mating sleeves. A mating hole is formed on the outer wall of each of the two mating sleeves and the two mating rods. An end cap body is fixedly connected to one end of each of the two mating rods. A sealing assembly is provided on the outer wall of the end cap body. A pressure gauge is fixedly connected to the outer wall of one of the end cap bodies. A media connector is fixedly connected to the outer wall of the pipe body.

[0007] Preferably, the sealing assembly includes two mating rings, the outer walls of the two end caps are respectively fixedly connected to one end of the two mating rings, the outer walls of the two mating rings are fixedly inlaid with rubber expansion sleeves, the outer walls of the two mating rings are provided with air passages, and the interiors of the two air passages are fixedly interconnected with air inlet connectors. The sealing assembly increases the sealing performance between the end cap and the pipe body.

[0008] Preferably, the outer wall of the U-shaped frame has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two electric push rods, so that the end cap body can be moved by setting electric push rods.

[0009] Preferably, a pin is slidably connected to the inner wall of the docking hole, and the docking sleeve and the docking rod are detachably fixed by setting the pin.

[0010] Preferably, the outer walls of both rubber expansion sleeves are pressed against the inner wall of the pipe body.

[0011] Preferably, one end of each of the two air inlet connectors is fixedly connected to the same air pump.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution uses an electric push rod to drive two end caps to move relative to each other, blocking both ends of the pipe body. Then, an air pump drives the rubber expansion sleeve to expand radially, making it tightly fit the inner wall of the pipe body to form a dynamic seal. Compared with traditional end face seals (such as O-rings), it is better able to adapt to high pressure and long-term testing requirements, reduces the risk of media leakage, and ensures the accuracy of test data. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a finished product pressure test head proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a finished product pressure test head proposed in this utility model;

[0017] Figure 3 This utility model proposes a finished product pressure testing head. Figure 2 A magnified structural diagram of part A in the diagram.

[0018] In the diagram: 1. U-shaped frame; 2. Support bracket; 3. Arc-shaped pipe support frame; 4. Pipe body; 5. Electric push rod; 6. Connecting sleeve; 7. Connecting rod; 8. Connecting hole; 9. End cap body; 10. Connecting ring; 11. Rubber expansion sleeve; 12. Air passage; 13. Air inlet connector; 14. Pressure gauge; 15. Medium connector. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it 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; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Depend on Figures 1-3 As shown, a finished product pressure test end cap is provided, including a U-shaped frame 1. Two supports 2 are fixedly connected to the top of the U-shaped frame 1. The top of the two supports 2 is fixedly connected to the same arc-shaped pipe support frame 3. The pipe body 4 is placed inside the arc-shaped pipe support frame 3 and is supported by the arc-shaped pipe support frame 3.

[0022] Two L-shaped frames are fixedly connected to the outer wall of the U-shaped frame 1. Electric push rods 5 are fixedly connected to the top of the two L-shaped frames. The L-shaped frames support the electric push rods 5. Two sliding holes are opened on the outer wall of the U-shaped frame 1. The inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two electric push rods 5 respectively.

[0023] The outer walls of the output ends of the two electric push rods 5 are fixedly connected to the mating sleeves 6. The inner walls of the two mating sleeves 6 are slidably connected to the mating rods 7. The outer walls of the two mating sleeves 6 and the two mating rods 7 are provided with mating holes 8. The inner walls of the mating holes 8 are slidably connected to the pins. The mating rods 7 are fixed in the mating sleeves 6 by the pins, forming a detachable design. One end of the two mating rods 7 is fixedly connected to the end cap body 9. The outer wall of one of the end cap bodies 9 is fixedly connected to a pressure gauge 14 (YN60). The pressure gauge 14 (YN60) detects the internal pressure of the pipe body 4. The outer wall of the pipe body 4 is fixedly connected to a medium connector 15.

[0024] The outer wall of the end cap body 9 is provided with a sealing assembly, which includes two mating rings 10. The outer walls of the two end cap bodies 9 are respectively fixedly connected to one end of the two mating rings 10. The outer walls of the two mating rings 10 are fixedly inlaid with rubber expansion sleeves 11. The outer walls of the mating rings 10 are provided with annular grooves, and the rubber expansion sleeves 11 are located in the annular grooves. The outer walls of the two rubber expansion sleeves 11 are pressed against the inner wall of the pipe body 4. The outer walls of the two mating rings 10 are provided with air passages 12. The interiors of the two air passages 12 are fixedly interconnected with air inlet connectors 13. One end of the two air inlet connectors 13 is fixedly interconnected with the same air pump.

[0025] Working principle: During use, the pipe body 4 to be tested is placed on top of the arc-shaped pipe support frame 3. The pipe body 4 is supported by the arc-shaped pipe support frame 3. Then, the two end caps 9 are inserted into the two connecting sleeves 6 through the two connecting rods 7. Then, the two pins are slid into the corresponding connecting holes 8. Then, the pin holes on the pins are inserted into the cotter pins to fix the connecting rods 7 in the connecting sleeves 6. The two electric push rods 5 drive the two connecting sleeves 6 and the two connecting rods 7 to move relative to each other, so that the two end caps 9 move relative to each other and are located at both ends of the two pipe bodies 4. The two connecting rings 10 slide into both ends of the pipe body 4 to block both ends. At the same time, the air pump operates to deliver compressed gas to the two air inlet joints 13, and then enters the two air passages 12 through the two air inlet joints 13, causing the two rubber expansion sleeves 11 to expand and squeeze against the inner walls of both ends of the pipe body 4 to increase the sealing of the connection. The medium joint 15 is connected to the existing pump body to deliver the medium (water or gas) into the interior of the pipe body 4 for pressure testing.

[0026] It should be noted that, in actual use, an existing synchronous PLC controller can be added. The synchronous PLC controller is electrically connected to the electric push rod 5 and the air pump to facilitate the control of the overall operation.

[0027] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0028] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A finished product pressure test end cap, comprising a U-shaped frame (1), characterized in that, The top of the U-shaped frame (1) is fixedly connected to two supports (2), and the top of the two supports (2) is fixedly connected to the same arc-shaped pipe support frame (3). The pipe body (4) is placed inside the arc-shaped pipe support frame (3). The outer wall of the U-shaped frame (1) is fixedly connected to two L-shaped frames. The top of the two L-shaped frames is fixedly connected to an electric push rod (5). The outer wall of the output end of the two electric push rods (5) is fixedly connected to a docking sleeve (6). The inner wall of the two docking sleeves (6) is slidably connected to a docking rod (7). The outer walls of the two docking sleeves (6) and the two docking rods (7) are provided with docking holes (8). One end of the two docking rods (7) is fixedly connected to a head body (9). The outer wall of the head body (9) is provided with a sealing component. The outer wall of one of the head bodies (9) is fixedly connected to a pressure gauge (14). The outer wall of the pipe body (4) is fixedly connected to a medium connector (15).

2. The finished product pressure test head according to claim 1, characterized in that, The sealing assembly includes two docking rings (10), and the outer walls of the two end cap bodies (9) are respectively fixedly connected to one end of the two docking rings (10). The outer walls of the two docking rings (10) are fixedly inlaid with rubber expansion sleeves (11), and the outer walls of the two docking rings (10) are provided with air passages (12). The interiors of the two air passages (12) are fixedly interconnected with air inlet connectors (13).

3. The finished product pressure test head according to claim 1, characterized in that, The outer wall of the U-shaped frame (1) has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two electric push rods (5).

4. The finished product pressure test head according to claim 1, characterized in that, The inner wall of the docking hole (8) is slidably connected with a pin.

5. A finished product pressure test head according to claim 2, characterized in that, The outer walls of both rubber expansion sleeves (11) are pressed against the inner wall of the pipe body (4).

6. The finished product pressure test head according to claim 2, characterized in that, The two air inlet connectors (13) are fixedly connected to the same air pump at one end.

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