Pipeline horn mouth plugging device

Abstract

The utility model relates to a pipeline horn mouth plugging device which comprises a round pipe with first threads arranged on the outer side, the round pipe is arranged at the end of a pipeline with a horn mouth in a sleeved mode, the round pipe is cut into a plurality of parts, and any part obtained through cutting is in a projection area on the bottom face of the round pipe. The size of an interior angle formed by connecting any two non-adjacent points in the projection area with the circle center is smaller than 270 degrees, and any ray, starting from the circle center, in the interior angle has an intersection point with the projection area; the cover comprises a sleeve part and a bottom plate part, one end of the sleeve part is connected to the periphery of the bottom plate part, a second thread matched with the first thread is arranged on the inner side face of the sleeve part, one side of the sealing part is tightly attached to the bottom plate part, the other side of the sealing part is tightly attached to a horn mouth to be plugged, and the cover tightly presses all parts of the circular pipe through matching of the first thread and the second thread. And the sealing element and the horn mouth realize plugging. Compared with the prior art, the device has the advantages of improving the efficiency and the like.

Description

Technical Field

[0001] The utility model relates to a bell mouth blocking structure, in particular to a pipeline bell mouth blocking device. Background Art

[0002] During aircraft maintenance, it is sometimes necessary to replace the engine. During this period, there is an engine fire extinguishing pipeline leakage detection project. When conducting the pipeline test, the nozzle of the pipeline needs to be effectively blocked, and then the pipeline is pressurized. When the pressure increases to the specified value, the pressurization is stopped, and then the timing is started. Within the specified time, if the pipeline pressure can be maintained within the value required by the manual, it means that the pipeline has passed the leakage test, otherwise the pipeline is considered unqualified and needs to be repaired or even replaced.

[0003] When doing a pipeline leakage test, a plugging device is usually used for plugging. The plugging device in the prior art uses spring force to insert the bell mouth into the plug groove, and then move the handle. Under the action of the spring force, a rubber disc is pressed against the bell mouth. When the pipeline is pressurized, the plugging disc relies on the spring pressure to achieve a plugging effect.

[0004] The disadvantages of this blocking effect are:

[0005] 1. The spring force will naturally decay after the tool has been used for a long time, and the friction force of the blocked disc during translation will also increase with the storage time of the tool (the tool is only needed when changing the hair);

[0006] 2. The plugging pressure of the original plug is set and cannot be adjusted;

[0007] 3. Since the space of each nozzle is very small, the original plug needs to be adjusted back and forth when the handle is turned during use, otherwise the sealing disc will be eccentric.

[0008] All of the above factors will cause leakage at the bell-mouth seal of the pipeline, affecting the sealing effect of the pipeline, resulting in low test efficiency and affecting maintenance work. Utility Model Content

[0009] The purpose of the utility model is to provide a pipeline bell mouth blocking device.

[0010] The purpose of the utility model can be achieved through the following technical solutions:

[0011] A pipeline bell mouth plugging device, comprising:

[0012] A circular tube with a first thread on the outside, the circular tube is sleeved at the end of a pipe with a bell mouth, and the circular tube is cut into a plurality of parts, and in a projection area of ​​any cut part on the bottom surface of the circular tube, the size of the internal angle formed by connecting any two non-adjacent points in the projection area with the center of the circle is less than 270 degrees, wherein any ray starting from the center of the circle in the internal angle has an intersection with the projection area;

[0013] A cover and a seal, wherein the cover comprises a sleeve portion and a bottom plate portion, one end of the sleeve portion is connected to the four sides of the bottom plate portion, and a second thread matching the first thread is provided on the inner side surface, one side of the seal is tightly attached to the bottom plate portion, and the other side is tightly attached to the bell mouth to be sealed, and the cover seals the various parts of the circular tube, the seal and the bell mouth by the cooperation of the first thread and the second thread.

[0014] The cutting line of the circular tube is parallel to the axis of the circular tube.

[0015] The sealing element is a rubber sheet.

[0016] The inner diameter of the sleeve portion gradually decreases from one end close to the bottom plate portion to the other end.

[0017] The sleeve portion and the bottom plate portion are integrally formed.

[0018] The device also includes a locking mechanism for locking the position of the cover after it has been tightened.

[0019] The locking mechanism is a locking pin, and the circular tube and the sleeve portion are provided with a locking hole for inserting the locking pin.

[0020] The circular tube is replaceable, and different circular tubes have different inner diameters.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. Through the specially designed cleavable circular tube, the deep cover is used to press from the side, and combined with the seal, the bell mouth can be quickly and conveniently blocked, and the space requirement for the installation area is low.

[0023] 2. Combined with the inner diameter design of the casing, the plugging pressure can be adjusted by the tightening degree, the plugging pressure can be adjusted, and the plugging effect is good.

[0024] 3. By changing the inner diameter of the semicircular piece, it can be used for sealing bell mouths of different types.

[0025] 4. Easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 A schematic diagram of the cracking of a circular tube in a certain embodiment;

[0028] Figure 3 is a schematic diagram of an axial cross section of the cover;

[0029] Among them: 1. round tube, 2. pipeline, 3. sealing part, 4. cover, 2-1. cut part, 4-1. sleeve part, 4-2. bottom plate part. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 addition, the terms "proximal", "distal", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In conjunction with the accompanying drawings, some embodiments of the present utility model are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] A pipeline 2 bell mouth plugging device, such as Figure 1 As shown, including:

[0037] A circular tube 1 with a first thread on the outside is sleeved on the end of a pipe 2 with a bell mouth, and the circular tube 1 is cut into multiple parts. In the projection area of ​​any cut part on the bottom surface of the circular tube 1, the size of the internal angle formed by connecting any two non-adjacent points in the projection area with the center of the circle is less than 270 degrees, wherein any ray starting from the center of the circle in the internal angle has an intersection with the projection area;

[0038] The cover 4 and the seal 3, the cover 4 includes a sleeve portion 4-1 and a bottom plate portion 4-2, one end of the sleeve portion 4-1 is connected to the four sides of the bottom plate portion 4-2, and a second thread matching the first thread is provided on the inner side surface, one side of the seal 3 is tightly attached to the bottom plate portion 4-2, and the other side is tightly attached to the bell mouth to be blocked, and the cover 4 presses the various parts of the circular tube 1, as well as the seal 3 and the bell mouth to achieve blocking through the cooperation of the first thread and the second thread.

[0039] By using a specially designed cleavable circular tube 1 and pressing it from the side with a deep cover 4 in combination with a seal 3, the bell mouth can be quickly and conveniently blocked, with low space requirements for the installation area.

[0040] In some embodiments, the cutting line of the circular tube 1 may be parallel to the axis of the circular tube 1. Figure 2 As shown, it is divided into 3 parts, or it can be divided into 2 parts or more parts as in other embodiments. With such a design, it is more convenient to assemble. Of course, in some embodiments that can appropriately reduce the convenience, an irregular division method can also be used, but it needs to be ensured that each cut part does not surround the pipeline 2 for a week, so that the blocking effect can be effectively improved.

[0041] In addition, generally, the sealing member 3 is a rubber sheet and can be made of a highly elastic rubber material.

[0042] In addition, in some embodiments, the inner diameter of the sleeve portion 4-1 gradually decreases from one end near the bottom plate portion 4-2 to the other end. Combined with the inner diameter design of the sleeve portion 4-1, the sealing pressure can be adjusted by the tightening degree, and the sealing effect is good.

[0043] Generally, the sleeve portion 4-1 and the bottom plate portion 4-2 are integrally formed to improve structural strength.

[0044] In addition, in some embodiments, the device also includes a locking mechanism for locking the position of the cover 4 after it is tightened. The locking mechanism is a locking pin, and the circular tube 1 and the sleeve portion 4-1 are provided with a locking hole for inserting the locking pin. Of course, in other embodiments, other locking forms can also be used.

[0045] In most embodiments, the circular tube 1 is replaceable, and different circular tubes 1 have different inner diameters. By changing the inner diameter of the semicircular piece, different types of bell mouth sealing work can be applied.

Claims

1. A pipeline bell mouth plugging device, characterized in that: include: A circular tube with a first thread on the outside, the circular tube is sleeved at the end of a pipe with a bell mouth, and the circular tube is cut into a plurality of parts, and in a projection area of ​​any cut part on the bottom surface of the circular tube, the size of the internal angle formed by connecting any two non-adjacent points in the projection area with the center of the circle is less than 270 degrees, wherein any ray starting from the center of the circle in the internal angle has an intersection with the projection area; A cover and a seal, wherein the cover comprises a sleeve portion and a bottom plate portion, one end of the sleeve portion is connected to the four sides of the bottom plate portion, and a second thread matching the first thread is provided on the inner side surface, one side of the seal is tightly attached to the bottom plate portion, and the other side is tightly attached to the bell mouth to be sealed, and the cover seals the various parts of the circular tube, the seal and the bell mouth by the cooperation of the first thread and the second thread.

2. A pipeline bell mouth plugging device according to claim 1, characterized in that: The cutting line of the circular tube is parallel to the axis of the circular tube.

3. A pipeline bell mouth plugging device according to claim 1, characterized in that: The sealing element is a rubber sheet.

4. A pipeline bell mouth plugging device according to claim 1, characterized in that: The inner diameter of the sleeve portion gradually decreases from one end close to the bottom plate portion to the other end.

5. A pipeline bell mouth plugging device according to claim 1, characterized in that: The sleeve portion and the bottom plate portion are integrally formed.

6. A pipeline bell mouth plugging device according to claim 1, characterized in that: The device also includes a locking mechanism for locking the position of the cover after it has been tightened.

7. A pipeline bell mouth plugging device according to claim 6, characterized in that: The locking mechanism is a locking pin, and the circular tube and the sleeve portion are provided with a locking hole for inserting the locking pin.

8. The pipeline bell mouth plugging device according to claim 1, characterized in that: The circular tube is replaceable, and different circular tubes have different inner diameters.

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