Pressure test device for branch pipeline

Abstract

The utility model relates to the technical field of pipeline detection, and discloses a pressure test device for a branch pipeline, which comprises a main pipe section, a branch pipe section and a pressure test assembly, a first control valve is arranged on the main pipe section; one end of the branch pipe section is connected with the main pipe section; the pressure testing assembly is connected with the end, away from the main pipe section, of the branch pipe section and comprises a main pipeline, a first branch used for pressure testing and a second branch used for pressure relief, one end of the main pipeline is connected with the branch pipe section, one end of the first branch is connected with the main pipeline, and the other end of the first branch is provided with a pressure-bearing pipe fitting used for medium pressure testing; a second control valve is arranged between the pressure-bearing pipe fitting and the first branch, the first branch is further provided with a pressure gauge used for displaying the pressure value, and the second branch is located below the first branch and connected with the main pipeline. According to the utility model, the problem that the secondary pressure testing process wastes time and labor due to the fact that various pressure testing devices need to be installed in the secondary pressure testing process in the prior art is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a pressure testing device for a branch pipeline. Background Art

[0002] In many engineering pipeline systems in buildings, circulating pipelines are adopted, such as hot water, heat medium, steam, heat-conducting oil, NMP pipeline systems, etc. The circulating pipelines of these systems are also divided into main pipeline loops, main branch loops, and branch loops, and their pipe diameters decrease from large to small, from the source end to the terminal end. During the construction process, the installation sequence is usually to install the main pipeline first, then the main branch loop, and finally the branch loop. After the installation of the main branch loop and the branch loop is completed, the connected main pipeline loop has already completed the pressure test and even been put into use. At this time, the secondary pressure test of the newly built main branch loop and branch loop must be carried out without affecting the main pipeline loop. The main purpose of the secondary pressure test is to further verify whether the pipeline meets the design requirements, ensure that the pipeline can withstand the normal working pressure, meet the use and operation conditions, and thus improve the reliability and service life of the project.

[0003] Currently, in the prior art, for the secondary pressure test of the branch pipe section, a variety of pressure testing devices need to be temporarily installed at the interfaces of each branch loop, such as a pressure test pump, a pressure gauge, etc., to carry out the secondary pressure test operation. The operation during the secondary pressure test of the branch pipe section is complex, making the pressure test process of the branch pipeline time-consuming and laborious, and affecting the pressure test efficiency of the branch pipe section. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that in the prior art, during the secondary pressure test operation of the branch pipe section, a variety of pressure testing devices need to be installed and disassembled multiple times, resulting in a time-consuming and laborious secondary pressure test process and affecting the secondary pressure test efficiency of the branch pipe section.

[0005] To solve the above technical problem, the utility model provides a pressure testing device for a branch pipeline, which includes a main pipe section, a branch pipe section, and a pressure testing assembly; a first control valve is arranged on the main pipe section; one end of the branch pipe section is connected to the main pipe section; the pressure testing assembly is connected to the end of the branch pipe section far from the main pipe section. The pressure testing assembly includes a main pipeline, a first branch for pressure testing, and a second branch for pressure relief. One end of the main pipeline is connected to the branch pipe section, one end of the first branch is connected to the main pipeline, and the other end is provided with a pressure-bearing fitting for medium pressure testing. A second control valve is arranged between the pressure-bearing fitting and the first branch. The first branch is also provided with a pressure gauge for displaying the pressure value. The second branch is located below the first branch and is connected to the main pipeline;

[0006] Among them, during the second pressure test, the first control valve is closed, the main pipeline is connected to the branch pipe section, the pressure test medium enters the main pipeline from the branch pipe section, the second control valve is opened, the pressure test medium enters the first branch, and enters the pressure-bearing pipe fitting through the first branch. After the pressure inside the pressure-bearing pipe fitting reaches the pressure test level, the second control valve is closed, the pressure-bearing pipe fitting starts to hold pressure, and the test is carried out through the pressure gauge. After the test is completed, the second control valve is opened, and the pressure test medium unloads the test pressure through the second branch.

[0007] In one embodiment, the branch pipe section includes a first blind plate, and the first blind plate is arranged between the branch pipe section and the pressure test assembly for blocking the medium of the branch pipe section.

[0008] In one embodiment, the pressure test assembly further includes an adapter for adjusting the diameter of the main pipeline. One end of the adapter is connected to the main pipeline, and the other end is connected to the branch pipe section.

[0009] In one embodiment, the pressure test assembly further includes a second blind plate, and the second blind plate is arranged at one end of the main pipeline away from the first blind plate.

[0010] In one embodiment, the number of branch pipe sections is multiple, and the multiple branch pipe sections are all connected to the same main pipe section.

[0011] In one embodiment, one end of the second branch away from the main pipeline forms a pressure relief port communicating with the external environment.

[0012] In one embodiment, the second branch further includes a third control valve, and the third control valve is arranged on the outer wall of the second branch for controlling whether the pressure relief port is communicated with the main pipeline.

[0013] In one embodiment, the number of pressure test assemblies is at least two, and the pressure test assemblies are respectively arranged at the front and rear ends of the same branch pipe section.

[0014] Compared with the prior art, the pressure testing device for a branch pipeline in an embodiment of the present utility model has the following beneficial effects: 1) The main pipe section, as the main part of the entire pressure testing system, is provided with a first control valve for controlling the flow of the medium in the main pipe section, isolating the main pipe section from the branch pipe section during the pressure testing process to ensure the safety and independence of the pressure testing process; 2) The branch pipe section is connected to the main pipe section at one end and is used to connect the pressure testing assembly at the other end, and the independent pressure testing of the branch pipeline is realized through the pressure testing assembly; 3) The pressure testing assembly performs pressure testing operations on the pressure medium in the branch pipe section. The pressure testing assembly includes a main pipeline, a first branch, and a second branch. The main pipeline is connected to the branch pipe section and is the inlet for the pressure testing medium to enter the pressure testing assembly. The first branch is used to convey the pressure testing medium to the pressure-bearing pipe fitting, and is provided with a second control valve and a pressure gauge. The second control valve is used to control the inflow and cutoff of the pressure testing medium, while the pressure gauge is used to monitor the pressure value inside the pressure-bearing pipe fitting in real time to ensure the precise control of the pressure testing process. The second branch is used to unload the pressure inside the pressure-bearing pipe fitting after the pressure testing is completed to ensure the safe end of the pressure testing process. By connecting the pressure testing assembly to the branch pipe section, the present utility model realizes the second pressure testing operation on the branch pipe section, effectively solving the problem in the prior art that a variety of pressure testing devices need to be installed temporarily during the secondary pressure testing process, resulting in time-consuming and laborious secondary pressure testing process and affecting the secondary pressure testing efficiency of the branch pipe section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the pressure testing assembly in an embodiment of the present utility model.

[0016] Figure 2 It is a schematic diagram of the pressure testing device in an embodiment of the present utility model.

[0017] In the figure, 1. Main pipe section; 11. First control valve; 2. Branch pipe section; 21. First blind plate; 3. Pressure testing assembly; 31. Main pipeline; 311. Second blind plate; 312. Adapter; 32. First branch; 321. Second control valve; 322. Pressure-bearing pipe fitting; 323. Pressure gauge; 33. Second branch; 331. Pressure relief port; 332. Third control valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0019] In the description of the present utility model, it should be understood that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. The terms "installed", "connected", and "connected to" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "height", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.

[0021] In the description of the present utility model, it should be understood that the terms "first" and "second" in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0022] Such as Figures 1 to 2As shown in the figure, the present utility model preferably provides a pressure test device for a branch pipeline, which includes: a main pipe section 1, a branch pipe section 2, and a pressure test assembly 3; a first control valve 11 is provided on the main pipe section 1; one end of the branch pipe section 2 is connected to the main pipe section 1; the pressure test assembly 3 is connected to the end of the branch pipe section 2 far from the main pipe section 1. The pressure test assembly 3 includes a main pipeline 31, a first branch 32 for pressure testing, and a second branch 33 for pressure relief. One end of the main pipeline 31 is connected to the branch pipe section 2, one end of the first branch 32 is connected to the main pipeline 31, and the other end is provided with a pressure-bearing fitting 322 for medium pressure testing. A second control valve 321 is provided between the pressure-bearing fitting 322 and the first branch 32. The first branch 32 is also provided with a pressure gauge 323 for displaying the pressure value. The second branch 33 is arranged below the first branch 32 and is connected to the main pipeline 31; wherein, during the secondary pressure test, the first control valve 11 is closed, the main pipeline 31 in the pressure test assembly 3 is connected to the branch pipe section 2, the second control valve 321 is opened, and the pressure test medium enters the pressure-bearing fitting 322 from the branch pipe section 2 through the first branch 32. After the pressure inside the pressure-bearing fitting 322 reaches the pressure test level, the second control valve 321 is closed, the pressure-bearing fitting 322 starts to hold the pressure, and the test is carried out through the pressure gauge 323. After the test is completed, the second control valve 321 is opened to unload the pressure through the second branch 33.

[0023] Based on the above technical features, through the setting of the main pipe section 1, as the main part of the entire pressure test system, a first control valve 11 is provided thereon to control the flow of the medium in the main pipe section 1, isolate the main pipe section 1 from the branch pipe section 2 during the pressure test process, and ensure the safety and independence of the pressure test process; through the setting of the branch pipe section 2, one end of the branch pipe section 2 is connected to the main pipe section 1, and the other end is used to connect the pressure test assembly 3, and the independent pressure test of the branch pipeline is realized through the pressure test assembly 3; through the setting of the pressure test assembly 3, the pressure test operation is carried out on the pressure medium in the branch pipe section 2. The pressure test assembly 3 includes a main pipeline 31, a first branch 32, and a second branch 33. The main pipeline 31 is connected to the branch pipe section 2 and is the inlet for the pressure test medium to enter the pressure test assembly 3. The first branch 32 is used to convey the pressure test medium to the pressure-bearing fitting 322, and a second control valve 321 and a pressure gauge 323 are provided thereon. The second control valve 321 is used to control the inflow and cut-off of the pressure test medium, and the pressure gauge 323 is used to monitor the pressure value inside the pressure-bearing fitting 322 in real time to ensure the precise control of the pressure test process. The second branch 33 is used to unload the pressure inside the pressure-bearing fitting 322 after the pressure test is completed to ensure the safe end of the pressure test process.

[0024] As some embodiments of the present utility model, such as Figure 2As shown in the figure, the branch pipe section 2 includes a first blind plate 21, and the first blind plate 21 is arranged between the branch pipe section 2 and the pressure test assembly 3 for blocking the medium in the branch pipe section 2. Through the setting of the first blind plate 21, during the pressure test of the branch pipe section 2, the first blind plate 21 can effectively block the branch pipe section 2, preventing the pressure test medium from flowing into the pressure test assembly 3 uncontrollably from the branch pipe section 2, thus ensuring the independence and accuracy of the pressure test process. At the same time, when the branch pipe section 2 does not need to be pressure tested, the first blind plate 21 can block the branch pipe section 2 to prevent the medium in the branch pipe section 2 from being polluted by the outside world.

[0025] As some embodiments of the present utility model, as Figure 2 shown in the figure, the pressure test assembly 3 further includes an adapter 312 for adjusting the diameter of the main pipeline 31. One end of the adapter 312 is connected to the main pipeline 31, and the other end is connected to the branch pipe section 2. Through the setting of the adapter 312, the diameter difference between the main pipeline 31 and the branch pipe section 2 can be adjusted. In practical applications, due to the complexity and diversity of the pipeline system, the diameters of the main pipeline 31 and the branch pipe section 2 are often inconsistent. By installing the adapter 312, the main pipeline 31 and the branch pipe section 2 can be conveniently connected to achieve a smooth transition of different diameters.

[0026] As some embodiments of the present utility model, as Figure 2 shown in the figure, the pressure test assembly 3 further includes a second blind plate 311, and the second blind plate 311 is arranged at one end of the main pipeline 31 away from the first blind plate 21. The second blind plate 311 and the first blind plate 21 act together to form an isolation of the pressure test area. This design effectively prevents the pressure test medium from accidentally leaking into the main pipeline 31 or other non-pressure test areas during the pressure test process, ensuring the safety and controllability of the pressure test process.

[0027] As some embodiments of the present utility model, as Figure 1 shown in the figure, the number of the branch pipe sections 2 is multiple, and the multiple branch pipe sections 2 are all connected to the same main pipe section 1. The setting of the multiple branch pipe sections 2 enables this application to be applicable to systems with multiple branch circulation pipelines, such as municipal water supply systems, industrial pipeline networks, etc., improving the applicability of this application.

[0028] As some embodiments of the present utility model, as Figure 2 shown in the figure, one end of the second branch 33 away from the main pipeline 31 forms a pressure relief port 331 communicating with the external environment. After the pressure test operation is completed, the excess pressure in the pressure test assembly 3 is released in time through the pressure relief port 331 of the second branch 33. The pressure relief port 331 helps to maintain the balance of the internal pressure of the system and ensure the normal operation of the system.

[0029] As some embodiments of the present utility model, as Figure 2As shown, the second branch 33 further includes a third control valve 332. The third control valve 332 is disposed on the outer wall of the second branch 33 for controlling whether the pressure relief port 331 communicates with the main pipeline 31. The third control valve 332 is disposed on the outer wall of the second branch 33, and its main function is to control the closing of the pressure relief port 331. The third valve can open or close a pressure relief port 331 connected to the second branch 33 as needed. The pressure relief port 331 is usually used to release the excessive pressure inside the pipeline after the device pressure test is completed, so as to prevent device damage or safety accidents.

[0030] As some embodiments of the present invention, as Figure 2 shown, the number of the pressure test assemblies 3 is at least two, and the pressure test assemblies 3 are respectively disposed at the front and rear ends of the same branch pipe section 2. The setting of multiple pressure test assemblies 3 can perform pressure tests simultaneously during the pressure test of the branch pipe section 2, further improving the working efficiency of the pressure test. At the same time, setting the pressure test assemblies 3 at the front and rear ends of the same branch pipe section 2 is an important measure to ensure the comprehensiveness, accuracy and safety of the system pressure test. This setting method helps to detect and handle leakage problems that occur during the pressure test in a timely manner, thus ensuring the normal operation of the pipeline system.

[0031] In summary, compared with the prior art, the pressure test device for a branch pipeline provided by the embodiments of the present invention has the following beneficial effects: 1) The main pipe section 1, as the main part of the entire pressure test system, is provided with a first control valve 11 for controlling the flow of the medium in the main pipe section 1, isolating the main pipe section 1 from the branch pipe section 2 during the pressure test, and ensuring the safety and independence of the pressure test process; 2) The branch pipe section 2 is connected to the main pipe section 1 at one end and is used to connect the pressure test assembly 3 at the other end, and the independent pressure test of the branch pipeline is realized through the pressure test assembly 3; 3) The pressure test assembly 3 performs a pressure test operation on the pressure medium in the branch pipe section 2. The pressure test assembly 3 includes a main pipeline 31, a first branch 32 and a second branch 33. The main pipeline 31 is connected to the branch pipe section 2 and is the inlet for the pressure test medium to enter the pressure test assembly 3. The first branch 32 is used to convey the pressure test medium to the pressure-bearing pipe fitting 322, and is provided with a second control valve 321 and a pressure gauge 323. The second control valve 321 is used to control the inflow and cut-off of the pressure test medium, and the pressure gauge 323 is used to monitor the pressure value inside the pressure-bearing pipe fitting 322 in real time to ensure the precise control of the pressure test process. The second branch 33 is used to unload the pressure in the pressure-bearing pipe fitting 322 after the pressure test is completed, ensuring the safe end of the pressure test process. The present invention realizes the second pressure test operation on the branch pipe section 2 by connecting the pressure test assembly 3 to the branch pipe section 2, effectively solving the problem in the prior art that multiple pressure test devices need to be installed during the secondary pressure test process, resulting in time-consuming and laborious secondary pressure test process and affecting the secondary pressure test efficiency of the branch pipe section 2.

[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A pressure test device for a branch pipeline, characterized in that: include: Main pipe section, branch pipe section and pressure test assembly; The main pipe section is provided with a first control valve; One end of the branch pipe section is connected to the main pipe section; The pressure test assembly is connected to one end of the branch pipe section away from the main pipe section, and the pressure test assembly includes a main pipe, a first branch for pressure testing, and a second branch for pressure relief. One end of the main pipe is connected to the branch pipe section, one end of the first branch is connected to the main pipe, and the other end is provided with a pressure-bearing pipe for medium pressure testing, and a second control valve is provided between the pressure-bearing pipe and the first branch. The first branch is also provided with a pressure gauge for displaying a pressure value. The second branch is located below the first branch, and the second branch is connected to the main pipe; During the secondary pressure test, the first control valve is closed, the main pipe is connected to the branch pipe section, the pressure test medium enters the main pipe from the branch pipe section, the second control valve is opened, the pressure test medium enters the first branch, and enters the pressure-bearing pipe fitting through the first branch. After the pressure inside the pressure-bearing pipe fitting reaches the test pressure level, the second control valve is closed, the pressure-bearing pipe fitting starts to hold the pressure, and is tested by the pressure gauge. After the test is completed, the second control valve is opened, and the pressure test medium unloads the test pressure through the second branch.

2. The pressure test device for branch pipeline according to claim 1, characterized in that: The branch pipe section includes a first blind plate, which is arranged between the branch pipe section and the pressure test assembly to block the medium of the branch pipe section.

3. The pressure test device for branch pipeline according to claim 2, characterized in that: The pressure test assembly also includes a conversion head for adjusting the diameter of the main pipe, one end of the conversion head is connected to the main pipe, and the other end is connected to the branch pipe section.

4. The pressure test device for branch pipeline according to claim 3, characterized in that: The pressure test assembly further includes a second blind plate, which is disposed at an end of the main pipe away from the first blind plate.

5. The pressure testing device for branch pipeline according to claim 1, characterized in that: There are multiple branch pipe sections, and the multiple branch pipe sections are all connected to the same main pipe section.

6. The pressure test device for branch pipeline according to claim 1, characterized in that: An end of the second branch away from the main branch forms a pressure relief port communicating with the external environment.

7. The pressure test device for branch pipeline according to claim 6, characterized in that: The second branch further includes a third control valve, which is disposed on an outer wall of the second branch and is used to control whether the pressure relief port is connected to the main branch.

8. The pressure testing device for branch pipeline according to claim 1, characterized in that: The number of the pressure test assemblies is at least two, and the pressure test assemblies are respectively arranged at the front and rear ends of the same branch pipe section.

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