Detection joint assembly for airspeed tube

Abstract

The utility model relates to the technical field of airspeed tube detection, in particular to an airspeed tube detection joint assembly, which comprises a positioning sleeve, a joint and a pressing sleeve which are sequentially sleeved at the end part of an airspeed tube, one end of the joint is in threaded connection with the positioning sleeve, and the other end is in threaded connection with the pressing sleeve; sealing pieces are arranged between the connector and the positioning sleeve and between the connector and the pressing sleeve. The connector is cylindrical, the two ends of the connector are each provided with a containing cavity used for containing a sealing piece, and the two containing cavities are arranged in a spaced mode. The inner walls of the two ends of the two containing cavities are each provided with a section of internal thread. A pressing ring is further arranged in the containing cavity and located on the side, close to the end of the connector, of the sealing piece. The airspeed tube detection joint assembly can be quickly mounted on the airspeed tube, is accurate in mounting position, and has the advantages of simple structure, convenience in disassembly and assembly, good sealing performance, no damage to the airspeed tube and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to air speed tube detection technical field especially relates to a kind of air speed tube detection joint assembly. BACKGROUND

[0002] Air speed tube is a device for measuring total pressure and static pressure of airflow to determine airflow velocity, by sensing total pressure and static pressure of airflow and transmitting measured pressure data to atmospheric data computer, flight instrument and other devices, widely used in aerospace equipment, mainly used to measure flight speed, air speed tube makes airflow enter air speed tube interior by the air inlet provided on tube body, airflow guide pipe in air speed tube interior guides airflow to inductor at the end of guide pipe, dynamic pressure of airflow is sensed by inductor, and then dynamic pressure is converted by electronic equipment or monitoring device, i.e. the flight speed of aircraft can be detected.

[0003] Air speed tube is an important sensor of unmanned aerial vehicle, whether air speed tube works normally or measures accurately is directly related to flight safety of unmanned aerial vehicle. Therefore, before use, air speed tube usually needs to be detected and verified. In prior art, air speed tube detection joint assembly is used to block air speed tube or provide positive pressure or negative pressure for air speed tube during air speed tube pressure test. The detection joint assembly commonly used in prior art air speed tube detection has simple structure, difficult installation position positioning, inconvenient disassembly and assembly, and is easy to scratch the surface of air speed tube. Therefore, designing a kind of air speed tube detection joint assembly with simple structure, convenient disassembly and assembly and accurate positioning becomes a technical problem to be solved by the technical personnel in the field. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a kind of air speed tube detection joint assembly for the above shortcomings, which can be quickly installed on air speed tube, and the installation position is accurate, with the advantages of simple structure, convenient disassembly and assembly, good sealing, no damage to air speed tube and the like.

[0005] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0006] A kind of air speed tube detection joint assembly, including the positioning sleeve, joint and compression sleeve that are successively sleeved in the end of air speed tube;The one end of joint is detachably connected with positioning sleeve, and the other end is detachably connected with compression sleeve;Sealing element is arranged between joint and positioning sleeve and between joint and compression sleeve.

[0007] As an improvement, the joint is cylindrical, and the two ends of the joint are provided with accommodation chambers for placing the sealing elements, and the two accommodation chambers are spaced apart;The inner walls at the two ends of the two accommodation chambers are each machined with an internal thread.

[0008] As an improvement, the accommodating chamber is further provided with a compression ring, which is located on one side of the sealing element close to the end of the connector.

[0009] As an improvement, the end of the compression ring close to the sealing element is arc-shaped and matched with the shape of the sealing element.

[0010] As an improvement, the sealing element is an O-ring.

[0011] As an improvement, the end of the positioning sleeve connected with the connector is provided with a section of external thread matched with the internal thread.

[0012] As an improvement, the end of the compression sleeve connected with the connector is provided with a section of external thread matched with the internal thread.

[0013] As an improvement, the end of the positioning sleeve away from the connector is provided with an end plate, and the end plate is provided with a through hole.

[0014] As an improvement, the side wall of the connector is provided with a connecting hole penetrating the inside and outside, and the connector is fixedly connected with the quick connector through the connecting hole.

[0015] As an improvement, the connecting hole is a screw hole, and the quick connector is threadedly connected with the connecting hole.

[0016] The above technical scheme has the following advantages compared with the prior art.

[0017] The structure design makes the air speed pipe detection connector assembly of the utility model can quickly position the air speed pipe through the size of the positioning sleeve, and when used, the end of the air speed pipe is attached to the end plate on the positioning sleeve, so that the measuring hole of the air speed pipe is located between the two sealing elements, and the measuring hole of the air speed pipe 1 can be plugged or provided with positive pressure or negative pressure airflow when used.

[0018] The positioning sleeve, the connector, the compression sleeve and the compression ring are all made of POM material, so that the surface of the air speed pipe can be well protected from being damaged when the air speed pipe detection connector assembly is disassembled and used, so as to ensure the durability and service life of the air speed pipe.

[0019] When the air speed pipe detection connector assembly of the utility model is used, the air speed pipe detection connector assembly and the air speed pipe can be quickly disassembled and installed in the correct position, and the air speed pipe detection connector assembly has the advantages of simple structure, convenient disassembly and assembly, good sealing, no damage to the air speed pipe, etc.

[0020] The utility model will be described in detail in combination with the drawings and embodiments. DRAWINGS

[0021] Figure 1 It is a structure schematic view of the air speed pipe detection joint assembly in the embodiment 1 of the utility model;

[0022] Figure 2 It is a three-dimensional schematic view of the air speed pipe detection joint assembly in the embodiment 1 of the utility model;

[0023] Figure 3 It is Figure 1 The structure schematic view of the middle joint;

[0024] Figure 4 It is a structure schematic view of the air speed pipe detection joint assembly in the embodiment 2 of the utility model;

[0025] Figure 5 It is a three-dimensional schematic view of the air speed pipe detection joint assembly in the embodiment 2 of the utility model;

[0026] Wherein: 1-air speed pipe, 2-positioning sleeve, 3-joint, 4-pressing sleeve, 5-sealing element, 6-end plate, 7-through hole, 8-receiving chamber, 9-internal thread, 10-pressing ring, 11-connection hole, 12-quick connector, 13-measuring hole. DETAILED DESCRIPTION

[0027] In order to facilitate the description and not for the limitation, the side close to the center of the air speed pipe detection joint assembly is defined as the inside, and the opposite direction is defined as the outside.

[0028] Embodiment 1

[0029] As Figure 1 , Figure 2 and Figure 3 Commonly shown, an air speed pipe detection joint assembly, including the positioning sleeve 2, the joint 3 and the pressing sleeve 4 that are sequentially installed in the end of air speed pipe 1. Preferably, the surface layer of positioning sleeve 2, joint 3 and pressing sleeve 4 is all processed with knurling, which facilitates the relative rotation and disassembly between the adjacent two. One end of joint 3 is detachably connected with positioning sleeve 2, and the other end is detachably connected with pressing sleeve 4. Sealing element 5 is arranged between joint 3 and positioning sleeve 2 and between joint 3 and pressing sleeve 4, and the sealing element 5 preferably uses silica gel sealing element, and an appropriate amount of silica gel grease is coated on the sealing element 5 during use. The end of positioning sleeve 2 away from joint 3 is provided with end plate 6, and the end plate 6 is provided with through hole 7.

[0030] As Figure 1 , Figure 2 and Figure 3As shown, the joint 3 is cylindrical, and both ends of the joint 3 are provided with accommodating chambers 8 for placing the sealing members 5. The accommodating chambers 8 are further provided with compression rings 10, which are located on one side of the sealing members 5 close to the end of the joint 3. The end of the compression ring 10 close to the sealing member 5 is arc-shaped and matches the shape of the sealing member 5, which makes the compression ring 10 and the sealing member 5 fit better and the sealing effect better. Preferably, the sealing member 5 is an O-ring.

[0031] The detachable connection between the joint 3 and the positioning sleeve 2 and between the joint 3 and the compression sleeve 4 can adopt a quick release structure or a threaded connection. In this embodiment, a threaded connection is preferred. Specifically, the two accommodating chambers 8 are spaced apart; the inner walls at both ends of the two accommodating chambers 8 are each provided with an inner thread 9. The end of the positioning sleeve 2 connected to the joint 3 is provided with an outer thread matching the inner thread. The end of the compression sleeve 4 connected to the joint 3 is provided with an outer thread matching the inner thread.

[0032] In the air speed tube detection joint assembly, the positioning sleeve 2, the joint 3, the compression sleeve 4, and the compression ring 10 are all made of POM material. When the air speed tube detection joint assembly is disassembled and used, the surface of the air speed tube 1 can be well protected from being damaged, so as to ensure the durability and service life of the air speed tube 1.

[0033] In use, the positioning sleeves 2 and the compression sleeves 4 at both ends of the air speed tube detection joint assembly are rotated relative to the joint 3 and loosened to appropriate positions, and attention should be paid not to be completely twisted off. Then the air speed tube detection joint assembly is sleeved on the end of the air speed tube 1, so that the end of the air speed tube 1 is attached to the end plate 6 on the positioning sleeve 2, so as to ensure that the measuring hole 13 on the air speed tube 1 is located between the two sealing members 5; finally, the positioning sleeve 2 and the compression sleeve 4 are tightened with the joint 3. The air speed tube detection joint assembly of this structure is used as a plugging member when the air speed tube 1 is detected, and has a plugging effect on the measuring hole 13 on the air speed tube 1.

[0034] The air speed tube detection joint assembly in this embodiment quickly positions the air speed tube 1 through the size of the positioning sleeve 2. In use, as long as the end of the air speed tube 1 is attached to the end plate 6 on the positioning sleeve 2, it can be ensured that the measuring hole 13 on the air speed tube 1 is located between the two sealing members 5, and the plugging of the measuring hole 13 on the air speed tube 1 is ensured.

[0035] Embodiment 2

[0036] As Figure 4 and Figure 5As shown in the drawings, the difference between the embodiment and the embodiment 1 is that the side wall of the joint 3 is provided with a through connecting hole 11, and the joint 3 is fixedly connected with the quick joint 12 through the connecting hole 11.

[0037] In use, the positioning sleeve 2 and the pressing sleeve 4 at both ends of the air speed pipe detection joint assembly are rotated relative to the joint 3 and are loosened to the appropriate position, and attention should be paid to not completely twist off. Then, the air speed pipe detection joint assembly is sleeved on the end of the air speed pipe 1, so that the end of the air speed pipe 1 is attached to the end plate 6 on the positioning sleeve 2, so as to ensure that the measuring hole on the air speed pipe 1 is located between the two sealing members 5; finally, the positioning sleeve 2 and the pressing sleeve 4 are twisted to be fastened with the joint 3, and the air speed pipe detection joint assembly with the structure can be used as a measuring member when the air speed pipe 1 is detected, and the measuring hole 13 on the air speed pipe 1 is provided with a positive pressure or negative pressure airflow through the quick joint 12.

[0038] The air speed pipe detection joint assembly in the embodiment can quickly position the air speed pipe 1 through the size of the positioning sleeve 2, and when in use, as long as the end of the air speed pipe 1 is attached to the end plate 6 on the positioning sleeve 2, the measuring hole 13 on the air speed pipe 1 can be ensured to be located between the two sealing members 5, and the measuring hole 13 on the air speed pipe 1 can be ensured to be provided with a positive pressure or negative pressure airflow when in use.

[0039] In summary, the air speed pipe detection joint assembly can be quickly installed on the air speed pipe, the installation position is accurate, has the advantages of simple structure, convenient disassembly and assembly, good sealing, no damage to the air speed pipe and the like.

[0040] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A pitot tube detection fitting assembly, characterized by: The application relates to a connecting device for an air speed pipe, which comprises a positioning sleeve (2), a joint (3) and a pressing sleeve (4) which are sequentially sleeved on the end of the air speed pipe; one end of the joint (3) is detachably connected with the positioning sleeve (2), and the other end is detachably connected with the pressing sleeve (4); sealing members (5) are arranged between the joint (3) and the positioning sleeve (2) and between the joint (3) and the pressing sleeve (4).

2. The pitot probe detection fitting assembly of claim 1, wherein: The joint (3) is in a cylindrical shape, both ends of the joint (3) are provided with containing chambers (8) for placing the sealing members (5), and the two containing chambers (8) are arranged at intervals; an inner thread (9) is formed on the inner wall of the two ends of the two containing chambers (8).

3. The pitot probe detection fitting assembly of claim 2, wherein: The containing chamber (8) is further provided with a pressing ring (10), and the pressing ring (10) is located on one side of the sealing member (5) close to the end of the joint (3).

4. The pitot probe detection fitting assembly of claim 3, wherein: The end of the pressing ring (10) close to the sealing member (5) is in an arc-shaped structure matched with the shape of the sealing member (5).

5. The pitot probe detection fitting assembly of claim 2, wherein: The sealing member (5) is an O-ring.

6. The pitot probe detection fitting assembly of claim 2, wherein: An outer thread matched with the inner thread is formed on the end of the positioning sleeve (2) connected with the joint (3).

7. The pitot probe detection fitting assembly of claim 2, wherein: An outer thread matched with the inner thread is formed on the end of the pressing sleeve (4) connected with the joint (3).

8. The pitot probe detection fitting assembly of claim 1, wherein: An end plate (6) is arranged on the end of the positioning sleeve (2) away from the joint (3), and a through hole (7) is arranged on the end plate (6).

9. The pitot probe detection fitting assembly of any one of claims 1 to 8, wherein: An inner-outer penetrating connecting hole (11) is arranged on the side wall of the joint (3), and the joint (3) is fixedly connected with a quick joint (12) through the connecting hole (11).

10. The pitot probe detection fitting assembly of claim 9, wherein: The connecting hole (11) is a screw hole, and the quick joint (12) is threadedly connected with the connecting hole (11).

Images