A valve cutting tool

Abstract

The application discloses a valve cutting tool, which is characterized in that the technical scheme is as follows: a pressure setting box is arranged, a protective cover is hingedly connected to the top surface of the pressure setting box, and a conversion tool is arranged above the pressure setting box; a measuring assembly is arranged in the pressure setting box and used for testing and setting the cutting value of a cutting valve; the cutting valve is applicable to the pressure setting box through the cut-off valve pressure setting of a second valve group, so that the cutting valve does not need to purchase new equipment, the equipment purchase cost is saved, the cutting value setting and testing of the cutting valve are more accurate and safe through the pressure setting box, the pressure regulating valve and the pressure regulating outlet ball valve of the measured branch need not be operated, frequent operation of the pressure regulating valve is avoided, the pressure regulating range of the pressure regulating valve is ensured, the pressure setting box and the conversion tool are convenient to carry, natural gas need not be vented during testing, energy is saved, benefits are created, and environmental pollution is avoided.

Description

Technical Field

[0001] This invention relates to the field of shut-off valve technology, and more specifically to a valve shut-off tool. Background Technology

[0002] A shut-off valve, also known as an installation shut-off valve, is connected to a combustible gas leak monitoring instrument. When the instrument detects a combustible gas leak, it automatically and quickly closes the main gas supply valve, cutting off the gas supply and preventing serious accidents. It can also be connected to the limit temperature (pressure) safety controller of thermal equipment. When the temperature (pressure) at the detection point inside the equipment exceeds the set limit value, it automatically and quickly closes the gas supply valve, stopping the fuel supply. Furthermore, it can be connected to the central fire alarm system of high-rise buildings. When a fire occurs in the building, it automatically cuts off the gas supply to prevent gas explosions. ZCR emergency gas shut-off valves installed in urban or factory gas supply networks can be centrally controlled in a central control room, allowing for remote emergency shut-off of the gas supply to the accident site. As a key piece of equipment in stations, shut-off valves are widely used in stations such as the Shaanxi-Beijing pipeline due to their stable performance and simple operation. However, precisely because of the importance of this type of equipment, the accuracy of its shut-off value setting and testing is crucial.

[0003] In the past, the setting and testing of the cut-off value of traditional shut-off valves required closing the ball valve at the outlet of the branch under test and adjusting the pressure through a pressure regulating valve. After adjustment, the pressure gauge was used to observe whether the pressure value reached the required cut-off value. However, during the adjustment and setting process, the low accuracy of the pressure gauge, pressure fluctuations during the adjustment process, and the operator's observation angle caused errors in the setting of the cut-off value, resulting in inaccurate setting of the cut-off value. Therefore, a valve shut-off tool is needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a valve shut-off tool that solves the problem of ***.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A valve shut-off tool includes: a pressure setting box, the top surface of which is hinged to a protective cover; a conversion tool is disposed above the pressure setting box, the conversion tool including a two-valve assembly; a connecting hose is provided between the conversion tool and the pressure setting box; and a measuring component disposed inside the pressure setting box for testing and setting the shut-off value of the shut-off valve.

[0007] By adopting the above technical solution and setting a measuring component, the cut-off value of the shut-off valve can be tested and set.

[0008] Preferably, the measuring assembly includes: a pressure tapping tube body, the pressure tapping tube body being disposed on one side of the instrument two-valve group, a shut-off valve being disposed on the top surface of the instrument two-valve group, a drain valve being disposed on the bottom surface of the instrument two-valve group, a first hose connector being disposed on one side of the instrument two-valve group, a plurality of second hose connectors being disposed on the top surface of the pressure setting box, the two ends of the connecting hose being respectively connected to the first hose connector and one of the second hose connectors, a vent valve, an inlet valve, a regulating valve, an outlet valve, a general pressure gauge and a fine-tuning pressure gauge being disposed on the top surface of the pressure setting box, and support blocks being fixedly installed at the four corners of the bottom surface of the pressure setting box.

[0009] By adopting the above technical solution, by setting up a pressure tapping pipe body, connecting the pressure tapping pipe body of the conversion tool to the shut-off valve pilot, and then connecting both ends of the connecting hose to the first hose connector and the second hose connector respectively, then setting the shut-off valve, then opening the outlet valve to observe the reading of the ordinary pressure gauge, slowly opening the regulating valve to observe the reading of the ordinary pressure gauge, opening the regulating valve and observing the reading of the fine-tuning pressure gauge, then slowly adjusting the opening to set the shut-off value, then closing the outlet valve and opening the vent valve to release nitrogen, then disconnecting the connection between the pressure tapping pipe body and the shut-off valve pilot, the shut-off valve can be used through the shut-off valve pressure setting pressure set box of the instrument two-valve group, without the need to purchase new equipment, saving equipment purchase costs, and through The pressure setting box ensures more accurate and safer setting and testing of the shut-off valve's cut-off value. It eliminates the need to operate the pressure regulating valve and its outlet ball valve in the tested branch, avoiding frequent operation of the pressure regulating valve, ensuring its pressure regulation range, and extending equipment lifespan. The pressure setting box and conversion tools are easy to carry. The new method is safe, simple, and easy for employees to master, offering higher controllability. Furthermore, the new method requires only one person to operate and allows for faster cut-off value setting, saving time and labor costs. Testing eliminates the need for natural gas venting, saving energy, generating profits, and avoiding environmental pollution. It also avoids the fire and explosion risks associated with natural gas accumulation during venting, providing a strong guarantee for the safe and stable gas supply to the station.

[0010] Preferably, a first quick connector is fixedly installed at one end of the pressure tapping tube body.

[0011] By adopting the above technical solution and setting a first quick connector at the end of the pressure tapping tube body, the ferrule of the shut-off valve pilot is not needed when connecting the pressure tapping tube body to the shut-off valve pilot. This solves the problem that the current shut-off valve pilot has a built-in threaded ferrule, and improper operation when directly connecting it to the ferrule will cause damage to the ferrule thread.

[0012] Preferably, a second quick connector is fixedly installed at the other end of the pressure tapping tube body.

[0013] By adopting the above technical solution and by setting a second quick connector, the pressure tapping tube body can be detachably installed with the instrument's two valve group, allowing for replacement when the pressure tapping tube body is damaged.

[0014] Preferably, the length of the pressure tap body is thirty centimeters.

[0015] By adopting the above technical solution and by setting a pressure-sensing tube body with a length of 30 centimeters, the conversion tool can be extended into some narrow operating locations.

[0016] Preferably, a placement box is fixedly installed on one side of the pressure setting box, a connecting cover is fixedly installed on one side of the protective cover, a male hook-and-loop fastener is fixedly installed on one side of the connecting cover, and a female hook-and-loop fastener is fixedly installed on one side of the pressure setting box.

[0017] By adopting the above technical solution and setting up a storage box, the conversion tools and connecting hoses can be easily stored.

[0018] Preferably, cushioning foam is fixedly installed on all four sides of the interior of the placement box.

[0019] By adopting the above technical solution and setting up a buffer sponge, the conversion tool and connecting hose can be protected.

[0020] Preferably, a lifting rod is fixedly installed on the top surface of the protective cover.

[0021] By adopting the above technical solution and by setting a lifting rod, the pressure setting box can be easily moved by the user.

[0022] In summary, the present invention has the following main beneficial effects:

[0023] By setting up the pressure tapping tube body, connecting the pressure tapping tube body of the conversion tool to the shut-off valve pilot, and then connecting both ends of the connecting hose to the first hose connector and the second hose connector respectively, the shut-off valve is set. Then, the outlet valve is opened to observe the reading on the ordinary pressure gauge, the regulating valve is slowly opened to observe the reading on the ordinary pressure gauge, the regulating valve is opened and the fine-tuning pressure gauge reading is observed, and then the opening is slowly adjusted to set the shut-off value. The outlet valve is then closed and the vent valve is opened to release nitrogen. The connection between the pressure tapping tube body and the shut-off valve pilot is then disconnected. The shut-off valve can be applied through the pressure setting box of the instrument's two-valve group, eliminating the need to purchase new equipment and saving equipment purchase costs. This method ensures more accurate and safer setting and testing of the shut-off valve's cut-off value, and eliminates the need to operate the pressure regulating valve and pressure regulating outlet ball valve of the tested branch. This avoids frequent operation of the pressure regulating valve, ensures the pressure regulating range of the valve, extends the service life of the equipment, and makes the pressure setting box and conversion tools easy to carry. The new method is safe, simple to operate, and easy for employees to master, offering higher controllability. Moreover, the new method only requires one person to operate and the cut-off value setting speed is faster, saving time and labor costs. There is no need to vent natural gas during testing, saving energy, creating benefits, avoiding environmental pollution, and avoiding the fire and explosion risks associated with natural gas accumulation during venting. This provides a favorable guarantee for the safe and stable gas supply of the station.

[0024] By setting a first quick connector at the end of the pressure tapping tube body, the ferrule of the shut-off valve pilot is not needed when connecting the pressure tapping tube body to the shut-off valve pilot. This solves the problem that the current shut-off valve pilot has a built-in threaded ferrule, and improper operation when directly connecting it to the ferrule will cause damage to the ferrule thread.

[0025] By setting a second quick connector, the pressure tapping tube body can be detachably installed with the instrument's two-valve assembly, allowing for replacement if the pressure tapping tube body is damaged. The pressure tapping tube body is 30 centimeters long, allowing the conversion tool to be extended into some confined operating locations.

[0026] The pressure setting box is designed to store conversion tools and connecting hoses, and it also features a cushioning sponge to protect these items. A lifting lever allows users to easily move the pressure setting box. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the connecting cover structure of the present invention;

[0029] Figure 3This is a schematic diagram of the conversion tool structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the connecting hose structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the placement box structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the pressure setting box structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the lifting rod structure of the present invention.

[0034] Reference numerals: 1. Pressure setting box; 11. Second hose connector; 12. Vent valve; 13. Inlet valve; 14. Regulating valve; 15. Outlet valve; 16. Ordinary pressure gauge; 17. Fine-tuning pressure gauge; 18. Support block; 2. Protective cover; 3. Conversion tool; 31. Instrument two-valve assembly; 311. Shut-off valve; 312. Discharge valve; 313. First hose connector; 32. Pressure tap body; 321. First quick connector; 322. Second quick connector; 4. Connecting hose; 5. Placement box; 51. Cushioning sponge; 6. Connecting cover; 7. Female hook and loop; 8. Female hook and loop; 9. Lifting rod. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6A valve shut-off tool includes a pressure setting box 1, which is an existing structure and will not be described in detail here. A protective cover 2 is hinged to the top of the pressure setting box 1. A conversion tool 3 is located above the pressure setting box 1. The conversion tool 3 includes an instrument two-valve assembly 31, which is an existing structure and will not be described in detail here. A connecting hose 4 is provided between the conversion tool 3 and the pressure setting box 1. A measuring component is installed inside the pressure setting box 1 for testing and setting the shut-off value of the shut-off valve. A placement box 5 is fixedly installed on one side, a connecting cover 6 is fixedly installed on one side of the protective cover 2, a sub-hook 7 is fixedly installed on one side of the connecting cover 6 (the sub-hook 7 is an existing structure and will not be described in detail here), and a female hook 8 is fixedly installed on one side of the pressure setting box 1 (the female hook 8 is an existing structure and will not be described in detail here). The placement box 5 facilitates the storage of the conversion tool 3 and the connecting hose 4. A lifting rod 9 is fixedly installed on the top surface of the protective cover 2, which facilitates the user to move the pressure setting box 1.

[0038] Example 2

[0039] refer to Figure 2 , Figure 3 , Figure 4 and Figure 7The measuring assembly includes a pressure tapping tube body 32, which is located on one side of the instrument two-valve group 31. A shut-off valve 311 is located on the top surface of the instrument two-valve group 31 (this is an existing structure and will not be described in detail here). A drain valve 312 is located on the bottom surface of the instrument two-valve group 31 (this is an existing structure and will not be described in detail here). A first hose connector 313 is located on one side of the instrument two-valve group 31 (this is an existing structure and will not be described in detail here). Several second hose connectors 11 are located on the top surface of the pressure setting box 1. The two ends of the connecting hose 4 are respectively connected to the first hose connector 313 and one of the second hose connectors. The pressure setting box 1 has a vent valve 12, an inlet valve 13, a regulating valve 14, an outlet valve 15, a standard pressure gauge 16, and a fine-tuning pressure gauge 17 on its top surface. The vent valve 12, inlet valve 13, regulating valve 14, outlet valve 15, standard pressure gauge 16, and fine-tuning pressure gauge 17 are existing structures and will not be described in detail here. Support blocks 18 are fixedly installed at the four corners of the bottom surface of the pressure setting box 1. A pressure-sensing pipe body 32 is installed, and the pressure-sensing pipe body 32 of the conversion tool 3 is connected to the shut-off valve pilot. Then, the two ends of the connecting hose 4 are connected to the first hose connector 313 and the second hose connector 11, respectively. Set the shut-off valve 311, then open the outlet valve 15 and observe the reading of the ordinary pressure gauge 16. Slowly open the regulating valve 14 and observe the reading of the ordinary pressure gauge 16. Open the regulating valve 14 and observe the reading of the fine-tuning pressure gauge 17. Then slowly adjust the opening to set the cut-off value. Then close the outlet valve 15 and open the vent valve 12 to release the nitrogen. Then disconnect the connection between the pressure tap body 32 and the shut-off valve pilot. The pressure setting box 1 can be used to set the shut-off valve through the pressure setting of the shut-off valve 311 of the instrument two valve group 31, eliminating the need to purchase new equipment, saving equipment purchase costs. The pressure setting box 1 ensures more accurate setting and testing of the shut-off valve's cut-off value. The method is safe and requires no operation of the pressure regulating valve and pressure regulating outlet ball valve of the tested branch, avoiding frequent operation of the pressure regulating valve, ensuring the pressure regulating range of the pressure regulating valve, and extending the service life of the equipment. The pressure setting box 1 and conversion tool 3 are easy to carry. The new method is safe and simple to operate, easy for employees to master, and has higher controllability. Moreover, the new method only requires one person to operate and the cutoff value setting speed is faster, saving time and labor costs. There is no need to vent natural gas during testing, saving energy, creating benefits, avoiding environmental pollution, and avoiding the fire and explosion risks of natural gas accumulation during venting, thus providing a favorable guarantee for the safe and stable gas supply of the station.

[0040] Example 3

[0041] refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7One end of the pressure tapping tube body 32 is fixedly installed with a first quick connector 321. The first quick connector 321 is an existing structure and will not be described in detail here. The other end of the pressure tapping tube body 32 is fixedly installed with a second quick connector 322. The second quick connector 322 is an existing structure and will not be described in detail here. By setting the second quick connector 322, the pressure tapping tube body 32 can be detachably installed with the instrument two-valve group 31. It can be replaced when the pressure tapping tube body 32 is damaged. The length of the pressure tapping tube body 32 is thirty centimeters. By setting the pressure tapping tube body 32 and the length of the pressure tapping tube body 32 being thirty centimeters, the conversion tool 3 can be extended into some narrow operating locations.

[0042] Example 4

[0043] refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The four sides of the inside of the box 5 are fixedly installed with cushioning sponges 51. The cushioning sponges 51 are existing structures and will not be described in detail here. By setting the cushioning sponges 51, the conversion tool 3 and the connecting hose 4 can be protected.

[0044] Working principle: Please refer to Figures 1-7As shown, during use, by setting the lifting rod 9, the pressure setting box 1 is moved to the working point by pulling the lifting rod 9. Then, the male and female hook-and-loop fasteners 7 and the protective cover 2 are opened. The conversion tool 3 and the connecting hose 4 are taken out from the inside of the placement box 5, and the two ends of the connecting hose 4 are connected to the first hose connector 313 and the second hose connector 11 respectively. Then, the root valve of the shut-off valve pressure tapping pipe is closed, the clamp connecting the pressure tapping pipe and the shut-off valve pilot is removed, and the gas vent in the pressure tapping pipe is opened. Then, the first quick connector 321 is connected to the shut-off valve pilot, so that the pressure tapping pipe body 32 is connected to the shut-off valve pilot. Then, the shut-off valve 311 is set and the outlet valve 15 is opened to observe the reading of the ordinary pressure gauge 16. The regulating valve 14 is slowly opened and the reading of the ordinary pressure gauge 16 is observed. The regulating valve 14 is opened and the reading of the fine-tuning pressure gauge 17 is observed. Then, the opening degree is slowly adjusted to set the cut-off value. After closing the outlet valve 15 and opening the vent valve 12 to release the nitrogen, the connection between the pressure tapping tube body 32 and the shut-off valve pilot is then disassembled, and the pressure tapping tube is reconnected to complete the process. By setting a first quick connector 321 at the end of the pressure tapping tube body 32, the shut-off valve pilot's ferrule is not needed when connecting the pressure tapping tube body 32 to the shut-off valve pilot, thus solving the problem that the current shut-off valve pilot has its own threaded ferrule, and improper operation when directly connecting it to the ferrule can cause damage to the ferrule thread. The second quick connector 322 allows the pressure tapping tube body 32 to be detachably installed with the instrument's two valve group 31, which can be replaced when the pressure tapping tube body 32 is damaged. By setting the pressure tapping tube body 32, and by setting the length of the pressure tapping tube body 32 to 30 centimeters, the conversion tool 3 can be extended into some narrow operating locations. By setting the storage box 5, the conversion tool 3 and the connecting hose 4 can be stored conveniently.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve shut-off tool, characterized in that, include: Pressure setting box (1), the top surface of the pressure setting box (1) is hinged to a protective cover (2), a conversion tool (3) is provided above the pressure setting box (1), the conversion tool (3) includes an instrument two-valve group (31), and a connecting hose (4) is provided between the conversion tool (3) and the pressure setting box (1); The measuring component is located inside the pressure setting box (1) and is used to test and set the cut-off value of the shut-off valve. The measuring components include: The pressure tapping pipe body (32) is located on one side of the instrument two valve group (31). The top surface of the instrument two valve group (31) is provided with a shut-off valve (311), the bottom surface of the instrument two valve group (31) is provided with a discharge valve (312), the side of the instrument two valve group (31) is provided with a first hose connector (313), the top surface of the pressure setting box (1) is provided with several second hose connectors (11), the two ends of the connecting hose (4) are respectively connected to the first hose connector (313) and one of the second hose connectors (11), the top surface of the pressure setting box (1) is respectively provided with a vent valve (12), an inlet valve (13), a regulating valve (14), an outlet valve (15), a general pressure gauge (16) and a fine-tuning pressure gauge (17), and the four corners of the bottom surface of the pressure setting box (1) are fixedly installed with support blocks (18).

2. The valve shut-off tool according to claim 1, characterized in that, A first quick connector (321) is fixedly installed at one end of the pressure tube body (32).

3. A valve shut-off tool according to claim 1, characterized in that, The other end of the pressure tube body (32) is fixedly installed with a second quick connector (322).

4. A valve shut-off tool according to claim 1, characterized in that, The length of the pressure-sensing tube body (32) is thirty centimeters.

5. A valve shut-off tool according to claim 1, characterized in that, A placement box (5) is fixedly installed on one side of the pressure setting box (1), a connecting cover (6) is fixedly installed on one side of the protective cover (2), a male hook and loop fastener (7) is fixedly installed on one side of the connecting cover (6), and a female hook and loop fastener (8) is fixedly installed on one side of the pressure setting box (1).

6. A valve shut-off tool according to claim 5, characterized in that, The four sides of the inside of the placement box (5) are all fixedly installed with cushioning sponges (51).

7. A valve shut-off tool according to claim 1, characterized in that, A lifting rod (9) is fixedly installed on the top surface of the protective cover (2).

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