Double-branch-pipe combined pressing exhaust device

Abstract

The utility model discloses a double-branch-pipe combined pressurizing and exhausting device, belongs to the technical field of water conservancy and hydropower engineering construction, and particularly relates to a device for carrying out a hydrostatic test after branch pipes are manufactured. A support is installed in the branch pipe, the top end of the support is located at the highest point of the branch pipe, an exhaust pipe is supported and fixed on the support, the exhaust pipe leads two highest points of the branch pipe from a choke plug along the top of the inner wall of the branch pipe and is fixed at the top of the inner wall, the tail end of the exhaust pipe is located outside the branch pipe, and the top elevation of a pipe opening of the exhaust pipe outside the branch pipe exceeds the highest water level of the branch pipe. And a high-pressure exhaust valve is mounted at the orifice of the exhaust pipe. The utility model has the beneficial effects that: 1, the exhaust pipe is used for exhausting, so that direct tapping on the branch pipe is avoided, and the quality and the construction progress of the branch pipe are ensured; air at the top of the branch pipe is effectively exhausted, and the potential safety hazard that air exists in the branch pipe in the branch pipe pressing test process is solved.

Description

Technical Field

[0001] The invention discloses a double-branch pipe combined pressure exhaust device, belonging to the technical field of water conservancy and hydropower engineering construction, and in particular relates to a device for performing a water pressure test after a bifurcated pipe is manufactured. Background Art

[0002] After the bifurcated pipe is manufactured, a water pressure test is required. When filling the bifurcated pipe with water for the water pressure test, the air in the bifurcated pipe must be exhausted. If the air in the bifurcated pipe is not completely exhausted, it will affect the accuracy of the pressure test and there are certain safety hazards. Conventional bifurcated pipe exhaust is exhausted by directly punching an exhaust hole on the top of the bifurcated pipe. This method requires the exhaust hole to be blocked later, which will have a certain impact on the quality of the parent material. The blocking of the hole is inconvenient, the process is complicated and affects the construction progress. Generally, the exhaust point is set at the highest position inside the bifurcated pipe, and there are two highest points inside the bifurcated pipe after the double bifurcated pipe is combined. Therefore, exhaust points need to be set at the two highest positions to ensure that the air in the bifurcated pipe is completely exhausted. This doubles the difficulty of the work, affects the quality of the parent material, and slows down the construction progress. Utility Model Content

[0003] The problem to be solved by the utility model is to provide an exhaust device that can completely exhaust the air in the bifurcated pipe when the double bifurcated pipe is filled with water during the combined water pressure test. The technical solution is as follows:

[0004] A double-branch pipe combined pressure exhaust device, the key technology of which is to install a bracket in the branch pipe, the top of the bracket is located at the highest point of the branch pipe, the bracket supports and fixes the exhaust pipe, the exhaust pipe is led from the blind end along the top of the inner wall of the branch pipe to the two highest points of the branch pipe and fixed at the top of the inner wall, the tail end of the exhaust pipe is located outside the branch pipe, the top elevation of the pipe mouth of the exhaust pipe outside the branch pipe exceeds the highest water level of the branch pipe, and a high-pressure exhaust valve is installed at the pipe mouth of the exhaust pipe.

[0005] The support is a vertical support pipe installed on the base.

[0006] The support is a metal tube.

[0007] The exhaust pipe is made of seamless steel pipe.

[0008] The high-pressure exhaust valve pressure is 15MPa.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The utility model adopts the exhaust pipe to exhaust gas, thus avoiding directly opening holes on the branch pipe, and ensuring the quality and construction progress of the branch pipe.

[0011] 2. The utility model effectively discharges the air at the top of the bifurcated pipe, thereby solving the potential safety hazard of air existing in the bifurcated pipe during the bifurcated pipe pressure test.

[0012] 3. The utility model has a simple structure, is easy to install, disassemble and operate, and meets the requirements for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the plane structure of the utility model. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies identical or similar to the present invention do not exceed the scope of protection of the present invention.

[0016] See also Figure 1 , Figure 2 The utility model provides a double-branch pipe combined pressure exhaust device, the key technology of which is to install two brackets 2 in the branch pipe, the top of the bracket 2 is located at the two highest points of the branch pipe, the bracket 2 supports and fixes the exhaust pipe 3, the exhaust pipe 3 is led from the blind head 1 along the top of the inner wall of the branch pipe to the two highest points of the branch pipe and is fixed at the top of the inner wall, the tail end of the exhaust pipe 3 is located outside the branch pipe, the top elevation of the pipe mouth of the exhaust pipe 3 outside the branch pipe exceeds the highest water level of the branch pipe to ensure that the air inside the branch pipe is exhausted through the exhaust pipe when filling with water, and a high-pressure exhaust valve 4 is installed at the pipe mouth of the exhaust pipe 3 to exhaust the air in the branch pipe.

[0017] The support 2 is a vertical support tube installed on the base 2.1.

[0018] The support 2 is made of a metal tube.

[0019] The exhaust pipe 3 is a seamless steel pipe with a diameter of A30.

[0020] The pressure of the high-pressure exhaust valve 4 is 15 MPa.

Claims

1. A double-branch pipe combined pressure exhaust device, characterized in that a bracket (2) is installed in the branch pipe, the top of the bracket (2) is located at the highest point of the branch pipe, the bracket (2) supports an exhaust pipe (3), the exhaust pipe (3) is led from the blind head (1) along the top of the inner wall of the branch pipe to the highest point of the branch pipe, the tail end of the exhaust pipe (3) is located outside the branch pipe, the top elevation of the pipe mouth of the exhaust pipe (3) outside the branch pipe exceeds the highest water level of the branch pipe, and a high-pressure exhaust valve (4) is installed at the pipe mouth of the exhaust pipe (3).

2. According to claim 1, a double-branched pipe combined pressure exhaust device is characterized in that The bracket (2) is a vertical support pipe installed on the base (2.1).

3. A double-branched pipe combined pressure exhaust device according to claim 1, characterized in that The support (2) is made of a metal tube.

4. A double-branched pipe combined pressure exhaust device according to claim 1, characterized in that The exhaust pipe (3) is made of seamless steel pipe.

5. According to claim 1, a double-branch pipe combined pressure exhaust device is characterized in that The pressure of the high-pressure exhaust valve (4) is 15 MPa.

Images