Pressure test and seal test tool for valves of different specifications and models

Abstract

A pressure test and seal test tool for valves of different specifications and models comprises a distributor, and a seal head and a flange are welded to the two ends of the distributor respectively. The distributor is connected with a plurality of 1 / 2 external threads, the flange is connected with a flange cover, and an adapter is welded at the center of the flange cover; the 1 / 2 external threads and the adapter are connected with the DN15 valve, and the pressure gauge is connected with one 1 / 2 external thread. A valve needing to be tested is installed on the DN15 valve, the pressurizing pump is installed on the DN15 valve connected with the adapter, the DN15 valve of the exhaust port is opened while the pressurizing pump is opened, when water flows out of the exhaust port, the DN valve of the exhaust port is closed, pressurizing continues until it is observed that the pressure gauge presses the valve to be 1.5 times of the working pressure of the valve, the pressure is kept for 10 minutes, whether the valve leaks water or not is checked, and the valve is qualified if no water leaks.

Description

Technical Field

[0001] This invention belongs to the field of engineering installation technology, specifically relating to valve pressure testing and valve sealing testing in the construction of special equipment projects. Background Technology

[0002] In engineering construction, pressure tests and valve sealing tests must be conducted before valves can be used.

[0003] The existing valve pressure and sealing tests required the fabrication of pressure-pressuring fixtures with corresponding interfaces for different valve models. Due to the wide variety of valve types in the project, numerous sets of pressure-pressuring fixtures needed to be manufactured. After the project was completed, these fixtures were disposed of due to their large footprint, poor versatility, and lack of value for preservation. New projects then required the repeated fabrication of these fixtures. Each fixture could only be used to test one type of valve, resulting in low efficiency, numerous fixtures, and complex procedures.

[0004] The existing valve pressure test and valve sealing test have many shortcomings, such as:

[0005] (1) The original tooling requires the fabrication of multiple flanges and blind plates to achieve valve pressure and sealing tests.

[0006] (2) It requires a variety of tools, involves many steps, takes a long time, and requires a lot of manpower and resources.

[0007] (3) When multiple valves need to be installed, valve pressure tests and sealing tests cannot be completed, requiring more tooling to be made, which takes longer and affects the project installation schedule.

[0008] The purpose of using this fixture is to address the shortcomings of existing methods in current technology by creating a self-made integrated fixture for multiple valve pressure tests and sealing tests. This allows for the testing of multiple valves of different specifications using a single fixture, thereby improving work efficiency. Summary of the Invention

[0009] A self-made pressure test and sealing test fixture for valves of different specifications and models was constructed using DN80 carbon steel pipes, DN15 pipes processed into external threads, carbon steel plates, DN15 valves, DN80 flanges, DN80 flange covers, DN15 pipes processed into adapters, pressure gauges, and DN20 carbon steel pipes. The entire fixture was constructed using argon arc welding.

[0010] The improved design uses a pressure testing frame with 10 valve interfaces for simultaneous pressure testing as the main body. A DN15 internal thread ball valve is installed at each interface as the connection port for the assembly. A 1 / 2" pipe thread external thread connector is also machined for welding to the center opening of the flange cover of the valve requiring pressure testing to form the assembly. For larger valves (>DN50), four or more sets of flexible hoses (high-pressure quick-connect hoses) are added to connect the assembly and the pressure testing frame. The appropriate number of assembly sets is produced based on the type and quantity of valves.

[0011] This system can handle large-scale pressure testing of valves in engineering projects, easily allowing large valves to be placed on the ground for pressure testing. It can also perform pressure tests on valves of different specifications (with the same nominal pressure) simultaneously. After the valve pressure test is completed, only the pressure testing frame needs to be retained. This ensures that if valve pressure testing is required in future projects or maintenance, only the external threaded joint needs to be machined, welded to the flange cover of the valve to be pressure tested, and then assembled onto the pressure testing frame.

[0012] The technical solution of the present invention includes: a pressure test and sealing test fixture for valves of different specifications and models, including a distributor, with end caps and flanges welded to both ends of the distributor respectively; multiple 1 / 2 male threads are connected to the distributor, the flanges are connected to the flange cover, and an adapter is welded to the center of the flange cover; the 1 / 2 male threads and the adapter are connected to a DN15 valve, and the pressure gauge is connected to one 1 / 2 male thread.

[0013] Ten 1 / 2 external threads are welded to the front and rear sides of the distributor, and two 1 / 2 external threads are welded to the upper part of the distributor 1. One of the two 1 / 2 external threads on the upper part of the distributor is connected to a pressure gauge.

[0014] The pressure gauge is connected to a 1 / 2 male thread via a thread.

[0015] Install the valves to be tested on the 10 DN15 valves on both sides of the distributor, and install the pressure pump on the DN15 valves connected by the adapter.

[0016] The flange and flange cover are connected using bolts and nuts.

[0017] It also includes outriggers, reinforcing crossbars, and reinforcing vertical bars. The reinforcing crossbars and reinforcing vertical bars are connected to the distributor by welding.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) The entire valve pressurization process only requires 3 people to operate, which is 50% less than the previous operation of more than 6 people.

[0020] (2) This tooling can be reused repeatedly, and its overall structure is simple and easy to store.

[0021] (3) The invention of this tooling improves the efficiency of valve pressure testing and sealing testing, shortens the testing and judgment time, saves personnel, and allows construction personnel to be devoted to other work areas to the maximum extent.

[0022] (4) It can quickly determine whether the pressure and sealing are qualified, which greatly improves the inspection and installation progress, ensures the time nodes, and shortens the valve inspection period. Attached Figure Description

[0023] Appendix Figure 1 This is a schematic diagram of a pressure test and sealing test fixture for valves of different specifications and models.

[0024] In the diagram: 1. Distributor; 2. 1 / 2 male thread; 3. End cap; 4. DN15 valve; 5. Flange; 6. Flange cover; 7. Adapter; 8. Pressure gauge; 9. Support leg; 10. Reinforcing crossbar; 11. Reinforcing vertical bar. Detailed Implementation

[0025] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0026] The terminology used in one or more embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of one or more embodiments of this application. The singular forms “a,” “the,” and “the” used in one or more embodiments of this application and in the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” used in one or more embodiments of this application refers to and includes any or all possible combinations of one or more associated listed items.

[0027] It should be understood that although the terms first, second, etc., may be used to describe various information in one or more embodiments of this application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first may also be referred to as second without departing from the scope of one or more embodiments of this application, and similarly, second may also be referred to as first.

[0028] A pressure test and sealing test fixture for valves of different specifications and models includes a distributor 1, with end caps 3 and flanges 5 welded to both ends of the distributor 1 respectively; and 10 half-external threads 2 are welded after holes are opened on the front and rear sides of the distributor 1.

[0029] The upper part of distributor 1 has two 1 / 2 external threads 2 welded into the opening;

[0030] Flange 5 and flange cover 6 are connected by bolts and nuts; after the center opening of flange cover 6, adapter 7 is welded; one adapter 7 and eleven 1 / 2 male thread 2 are connected to 12 DN15 valves 4 by thread; one 1 / 2 male thread 2 is connected to pressure gauge 8 by thread.

[0031] The outrigger 9, reinforcing crossbar 10, and reinforcing vertical bar 11 are connected to the distributor 1 by welding.

[0032] Instructions for use: Install the valve to be tested on the 10 DN15 valves 4 on both sides. Install the pressure pump on the DN15 valves 4 connected to the adapter 7. Turn on the pressure pump and simultaneously open the exhaust port DN15 valve 4. When water flows out of the exhaust port, close the exhaust port DN15 valve 4. Continue pressurizing until the pressure gauge 8 shows 1.5 times the working pressure of the valve. Hold the pressure for 10 minutes and check for water leakage. If there is no water leakage, it is qualified. Open the exhaust port DN15 valve 4 to perform the pressure relief operation and remove the valves from the tooling.

[0033] The above description is merely a preferred embodiment of this patent and is not intended to limit this patent. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this patent shall be included within the scope of protection of this patent.

[0034] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0035] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0036] The preferred embodiments disclosed above are merely illustrative of this application. The optional embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this application. These embodiments are selected and specifically described in this application to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to better understand and utilize this application.

Claims

1. A pressure test and seal test tooling for different size and type valves, characterized in that, It includes a distributor (1), a head (3) and a flange (5) are welded at both ends of the distributor (1) respectively; a plurality of 1 / 2 external threads (2) are connected to the distributor (1), the flange (5) is connected with a flange cover (6), the flange cover (6) is welded with an adapter (7) at the center; the 1 / 2 external thread (2), the adapter (7) and a DN15 valve (4) are connected, and a pressure gauge (8) is connected with one 1 / 2 external thread (2).

2. The different size valve pressure test and seal test tooling of claim 1, wherein, Ten 1 / 2 external threads (2) are welded on the front and back sides of the distributor (1), two 1 / 2 external threads (2) are welded on the upper part of the distributor (1), and one of the two 1 / 2 external threads (2) on the upper part of the distributor (1) is connected with the pressure gauge (8).

3. The different size valve pressure test and seal test tooling of claim 2, wherein, The pressure gauge (8) is connected with one 1 / 2 external thread (2) through screw connection.

4. The different size valve pressure test and seal test tooling of claim 2, wherein, The valve to be tested is installed on the ten DN15 valves (4) on the front and back sides of the distributor (1), and a pressure pump is installed on the DN15 valve (4) connected with the adapter (7).

5. The different size valve pressure test and seal test tooling of claim 1, wherein, The flange (5) is connected with the flange cover (6) by using bolts and nuts.

6. The different size valve pressure test and seal test tooling of claim 1, wherein, It also includes a supporting leg (9), a reinforcing cross rod (10) and a reinforcing vertical rod (11), and the reinforcing cross rod (10) and the reinforcing vertical rod (11) are connected with the distributor (1) by welding.

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