Flow measuring tube of air conditioner splitter

Abstract

The utility model belongs to the technical field of measuring devices, and discloses a flow measuring tube for an air conditioner splitter, which comprises a hollow cylindrical tube body used for connecting a flow detector with an inlet of a main pipeline of the air conditioner splitter. A flow measuring port which is matched with the conical outer wall of the main pipeline inlet and used for being tightly attached to the conical outer wall of the main pipeline inlet is fixedly formed in the end, connected with the main pipeline inlet of the air conditioner splitter, of the pipe body. When sleeved at a main pipeline inlet with a conical surface, the flow pipe can be tightly attached to the conical outer wall of the main pipeline inlet, gas leakage at the joint of the flow pipe and a main pipeline during flow detection is prevented, the measurement accuracy is improved, and the flow pipe is suitable for being connected with the main pipeline of an air conditioner splitter.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring device technical field, concretely speaking, a kind of air conditioner branch ware measures flow pipe. BACKGROUND

[0002] Air conditioner branch ware is usually shaped multi-branch structure, and multiple branch pipes are connected on main pipe line. Figure 1 As shown in the drawings, in order to connect main pipe line 1 with copper pipe 7 of outdoor unit, connecting piece that is in communication with main pipe line 1 is usually welded at the end of main pipe line 1. Connecting piece is fixedly connected into integrated structure from left to right in turn as connecting part 2, threaded part 3, abutting part 4, and their interiors are coaxial and in communication with main pipe line 1. The outer contour of connecting part 2 is conical surface, and the diameter gradually increases from left to right, threaded part 3 includes cylinder with diameter greater than the maximum outer diameter of connecting part 2, and the arc surface of cylinder is provided with thread, and abutting part 4 is fixedly connected at the right side of threaded part 3, and the outer diameter of abutting part 4 is greater than the outer diameter of cylinder, which is conducive to the complete adhesion of the right side of nut 8 to the left side of abutting part 4. The right end of copper pipe 7 is conical structure with gradually increasing inner diameter from left to right, so the outer wall of left end of connecting piece is conical, and its diameter gradually increases from left to right, and the shape of outer wall of left end of connecting piece is the same as the top angle of corresponding cone of the shape of inner wall of right end of copper pipe 7, so as to seamlessly fit the left end of connecting piece to the right end of copper pipe 7, which is conducive to the sealing of connecting part. Nut 8 that is adapted to threaded part 3 is movably sleeved on the outer wall of copper pipe 7, and the length of nut 8 is greater than or equal to the sum of the axial length of connecting part 2 and the axial length of threaded part 3, when connecting part 2 abuts inside the conical cavity of copper pipe 7, by screwing nut 8 to the right, the thread on the outer surface of threaded part 3 is matched, until the right side of nut 8 abuts the left side of abutting part 4, so as to limit the position of nut 8, and realize the fixed connection of main pipe line 1 and copper pipe 7.

[0003] After the production of air conditioner branch ware is completed, the flow of air conditioner branch ware needs to be detected by using flow detector, the two ends of flow pipe are connected with connecting piece of main pipe line inlet and flow detector respectively, air guide pipe is connected between branch pipe outlet and flow detector, and other branch pipe outlets without connecting air guide pipe are plugged, to form gas circulation loop. Then, flow detector sends gas to the loop, and whether the flow of current air conditioner branch ware meets the requirements is judged by the number of flow detector. However, the end of existing flow pipe is flat, after the end of flow pipe is sleeved on the outside of left end of connecting piece, the inner wall of flat end of flow pipe cannot be closely fitted with the outer wall of left end of connecting piece, and when detecting flow, the connection part may leak due to too large gas flow, thereby affecting the flow detection result. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of air conditioner branch ware measures flow pipe, when its end portion is connected in the main pipeline entrance with conical face, it can be closely combined with the conical outer wall of main pipeline entrance, prevent gas leakage at the connecting portion of flow pipe and main pipeline during flow detection, improve the accuracy of measurement.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of air conditioner branch ware measures flow pipe, including hollow cylindrical pipe body for connecting flow detector and air conditioner branch ware main pipeline entrance, one end of pipe body and air conditioner branch ware main pipeline entrance are fixedly provided with flow measuring port, which is mutually adapted with the conical outer wall of main pipeline entrance, and can be closely combined with the conical outer wall of main pipeline entrance.

[0006] As a limitation of the utility model: the outer wall shape of flow measuring port is cylindrical, the inner wall shape of flow measuring port is conical, the inner wall diameter of flow measuring port gradually increases from the direction close to pipe body to the direction away from pipe body;The vertex angle of the cone corresponding to the conical surface of the conical outer wall of main pipeline entrance is the same as the vertex angle of the cone corresponding to the conical surface of the conical inner wall of flow measuring port.

[0007] As a limitation of the utility model: the vertex angle of the cone corresponding to the conical surface of the conical outer wall of main pipeline entrance is 45 degrees, and the vertex angle of the cone corresponding to the conical surface of the conical inner wall of flow measuring port is also 45 degrees.

[0008] As a limitation of the utility model: the minimum internal diameter of flow measuring port is the same as the internal diameter of pipe body, and the external diameter of flow measuring port is the same as the external diameter of pipe body.

[0009] As a limitation of the utility model: the side wall thickness of pipe body is 5mm.

[0010] As a limitation of the utility model: pipe body and flow measuring port are made of plastic.

[0011] Due to the adoption of the above technical scheme, compared with prior art, the utility model has the beneficial effects that: by setting the internal cavity side wall of flow measuring port as conical, and the vertex angle of the cone corresponding to the conical surface of the conical inner wall of flow measuring port is the same as the vertex angle of the cone corresponding to the conical surface of the conical outer wall of the connecting portion of main pipeline entrance, the internal structure of flow measuring port can be mutually adapted with the external structure of the connecting portion of main pipeline entrance, after the connecting portion of main pipeline entrance is connected with flow measuring port, they can be closely combined, prevent gas leakage at the connecting portion of main pipeline entrance and flow measuring port during flow detection, improve the accuracy of flow detection result. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0013] Figure 1 It is a structure schematic view of copper pipe and main pipe in prior art.

[0014] Figure 2 It is a structure schematic view of the utility model embodiment and main pipe.

[0015] In the figure: 1-main pipe, 2-connection part, 3-threaded part, 4-abutment part, 5-pipe body, 6-flow measurement port, 7-copper pipe, 8-nut. Specific embodiments

[0016] The preferred embodiments of the utility model will be explained below in combination with the drawings. It should be understood that the air conditioner branch flow measuring pipe described herein is a preferred embodiment, which is used only for illustration and explanation of the utility model, and does not constitute a limitation on the utility model.

[0017] The "up", "down", "left", "right" and other orientation words or position relationships in the utility model are based on the orientation relationship of the drawings of the utility model specification, which are only used for the convenience of describing the utility model and simplifying the description, and are not indicative or implied of the specific orientation, specific orientation structure and operation of the device or element, so it cannot be understood as a limitation on the content protected by the utility model.

[0018] An air conditioner branch flow measuring pipe is used for connecting the main pipe inlet and flow detector in the air conditioner branch flow detection process. As shown in Figure 1 and Figure 2 The main pipe inlet is located at the left end of the main pipe 1, and the air conditioner branch flow measuring pipe comprises a hollow cylindrical pipe body 5 for connecting the connection part 2 of the flow detector and the air conditioner branch main pipe inlet. The pipe body 5 is made of plastic, and the thickness of the side wall of the pipe body 5 is 5mm, so that the pipe body 5 will not be deformed due to large flow in the pipe body 5.

[0019] The pipe body 5 is fixedly provided with a flow measuring port 6 at one end connected with the main pipe inlet of the air conditioner branch device, which is matched with the conical outer wall of the connecting part 2 of the main pipe inlet and can be tightly attached to the conical outer wall of the connecting part 2 of the main pipe inlet. The outer wall of the flow measuring port 6 is cylindrical, the inner wall of the flow measuring port 6 is conical, and the inner wall diameter of the flow measuring port 6 gradually increases from the direction close to the pipe body 5 to the direction away from the pipe body 5. The minimum internal diameter of the flow measuring port 6 is the same as the internal diameter of the pipe body 5, and their interiors are mutually connected, which is conducive to the smooth passage of gas through the part where the pipe body 5 and the flow measuring port 6 are connected. The external diameter of the flow measuring port 6 is the same as the external diameter of the pipe body 5, which is conducive to the appearance of the product. The external diameter of the flow measuring port 6 is smaller than the external diameter of the threaded part 3, and the flow measuring port 6 is made of plastic. After the flow measuring port 6 is connected with the connecting part 2 of the main pipe inlet, the pipe body 5 is moved to the right, and the right side of the flow measuring port 6 abuts against the left side of the threaded part 3, thereby limiting the position of the pipe body 5.

[0020] Because the conical surface corresponding to the top angle of the cone of the internal profile of the right end of the flow measuring port 6 is the same as the conical surface corresponding to the top angle of the cone of the external profile of the connecting part 2, the internal structure of the flow measuring port 6 can be matched with the external structure of the connecting part 2, and after the main pipe inlet is connected with the flow measuring port 6, they can be tightly attached to each other, preventing gas leakage at the part where the main pipe inlet and the flow measuring port 6 are connected during flow detection, and improving the accuracy of the flow detection result. In this embodiment, the conical surface corresponding to the top angle of the cone of the conical outer wall of the main pipe inlet is 45 degrees, and the conical surface corresponding to the top angle of the cone of the conical inner wall of the flow measuring port 6 is also 45 degrees.

[0021] When this embodiment is used, first, a standard model of air conditioner branch device is selected, the connecting part 2 of the main pipe inlet is connected to the gas outlet of the flow detector through the pipe body 5, and it is ensured that the conical side wall inside the flow measuring port 6 is tightly attached to the conical side wall of the connecting part 2 of the main pipe inlet; the other branch pipe outlets are blocked, one of the branch pipe outlets is connected to the gas inlet of the flow detector using a gas guide pipe to form a gas circulation loop, and the gas with constant flow rate passes through the gas outlet, the pipe body 5, the flow measuring port 6, the main pipe 1, one of the branch pipes, the gas guide pipe, and the gas inlet in sequence, and the flow value on the flow detector is recorded; then, the air conditioner branch device to be detected is selected, and the above pipe connection steps are repeated, and the gas with the same constant flow rate is input into the circulation loop, if the flow value of the air conditioner branch device to be detected is the same as the flow value of the standard air conditioner branch device or there is an error within the allowable range, it can be considered that the flow of the air conditioner branch device to be detected is qualified, and if the error exceeds the allowable range, it can be considered that the flow of the air conditioner branch device to be detected is unqualified.

Claims

1. An air conditioner branch measuring flow tube comprising a hollow cylindrical tube body for connecting a flow detector and an air conditioner branch main pipe inlet, characterized in that: The one end of the pipe body connected with the main pipe inlet of the air conditioner branch device is fixedly provided with a flow measuring port which is matched with the conical outer wall of the main pipe inlet and can be closely attached to the conical outer wall of the main pipe inlet.

2. The flow measuring tube of the air conditioner branch according to claim 1, wherein: The outer wall of the flow measuring port is cylindrical, the inner wall of the flow measuring port is conical, the diameter of the inner wall of the flow measuring port gradually increases from the direction close to the pipe body to the direction away from the pipe body, the top angle of the cone corresponding to the conical surface of the inner wall of the flow measuring port is the same as the top angle of the cone corresponding to the conical surface of the outer wall of the main pipe inlet.

3. The air conditioner branch measuring flow tube of claim 2, wherein: The top angle of the cone corresponding to the conical surface of the outer wall of the main pipe inlet and the top angle of the cone corresponding to the conical surface of the inner wall of the flow measuring port are both 45 degrees.

4. The air conditioner branch measuring flow tube of claim 3, wherein: The minimum internal diameter of the flow measuring port is the same as the internal diameter of the pipe body, and the external diameter of the flow measuring port is the same as the external diameter of the pipe body.

5. The air conditioner branch measuring flow tube of claim 4, wherein: The thickness of the side wall of the pipe body is 5mm.

6. The air conditioner branch measuring flow tube according to any one of claims 1 to 5, characterized in that: The pipe body and the flow measuring port are both made of plastic.

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