Fuel gas pressure regulating gun

Abstract

The utility model relates to the technical field of fuel gas pressure regulation, in particular to a fuel gas pressure regulating gun. The fuel gas pressure regulating gun comprises a gun barrel, a gas injection component is installed in the gun barrel and comprises a sliding plunger, the sliding plunger is installed in the gun barrel in a sliding mode, a first piston is fixedly installed at the front end of the sliding plunger, a middle connecting rod in sliding connection is inserted into the sliding plunger, and a second piston is fixedly installed on the rod head of the middle connecting rod. An air suction valve is fixedly installed on the first piston, an exhaust valve is fixedly installed on the second piston, a trigger component is installed on the gun barrel, and a pressure gauge is installed at the position, close to the gun head, of the gun barrel. According to the fuel gas pressure regulating gun, the double-piston linkage design is adopted, a spring energy storage release mechanism is matched, high-pressure airflow can be instantly generated, the reset time is shortened to the second level, a one-way transmission mechanism formed by the pawl and the ratchet plate ensures that the plunger only moves towards the muzzle in a pressurizing mode, the gun handle and the trigger conform to the ergonomics, and the safety of the gun handle and the trigger is improved. And the gas injection operation can be completed by one hand.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pressure regulation, in particular to a gas pressure regulating gun. Background Art

[0002] In the gas transmission and distribution system, the pressure regulating box (cabinet) is a key equipment to ensure the stability of downstream pressure. Its core safety components include the pressure regulator and the safety shut-off valve. The pressure regulator is responsible for accurately controlling the outlet pressure to the set value; the safety shut-off valve serves as a protection device. When it detects an abnormal increase (overpressure) or abnormal decrease (loss of pressure) in the outlet pressure, it automatically cuts off the gas supply to prevent damage to downstream instruments, pipelines and gas-using equipment.

[0003] Regular functional testing and pressure setting verification of safety shut-off valves are of paramount importance in maintenance work. The traditional testing method requires the tester to manually and slowly adjust the pressure regulator to gradually increase the outlet pressure until the shut-off valve is triggered. This process is time-consuming and requires repeated fine-tuning. In addition, it relies on manual adjustment, making it difficult to accurately and quickly reach and stabilize the pressure point required to trigger the shut-off (usually required to be 1.5 times the outlet working pressure), affecting the accuracy of the test results. At the same time, the traditional method generates high-pressure airflow slowly, resulting in a lengthy process of resetting the shut-off valve (or simulating triggering). Especially when multiple tests and verifications are required, the problem of low efficiency is more prominent.

[0004] Therefore, it is necessary to provide a new gas pressure regulating gun to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a gas pressure regulating gun.

[0006] The gas pressure regulating gun provided by the utility model comprises a gun barrel, a gun handle is fixedly mounted on the rear end of the gun barrel, sliding grooves are formed on both side walls of the gun barrel near the gun handle and are communicated with the inner cavity of the gun barrel, and a mounting cavity is formed on the lower wall of the gun barrel near the gun handle and is communicated with the inner cavity of the gun barrel;

[0007] A gas injection component is installed in the gun barrel, and the gas injection component includes a sliding plunger, the sliding plunger is slidably installed in the gun barrel, a first piston is fixedly installed on the front end of the sliding plunger, and a sliding middle link is inserted into the sliding plunger, and a second piston is fixedly installed on the rod head of the middle link, the second piston is fixedly installed near the muzzle of the gun barrel, an intake valve is fixedly installed on the first piston, and an exhaust valve is fixedly installed on the second piston;

[0008] A ratchet plate is fixedly mounted on the bottom of the sliding plunger, a spring is fixedly mounted on the tail of the sliding plunger, and the other end of the spring is fixedly connected to the inner wall of the tail of the barrel;

[0009] The gun barrel is provided with a trigger component for driving the sliding plunger to slide, and the gun barrel is provided with a pressure gauge near the gun head.

[0010] Preferably, two symmetrically distributed pull-back plates are fixedly mounted on the tail of the sliding plunger, and the two pull-back plates extend out of the sliding grooves opened on both sides of the barrel respectively.

[0011] Preferably, a groove is provided on the column of the sliding plunger close to the first piston.

[0012] Preferably, the trigger component includes a half-toothed gear and a driving gear, the half-toothed gear is rotatably mounted in the mounting cavity via a rotating rod, and a pawl is fixedly mounted on a portion of the half-toothed gear where no gear is provided, the pawl is connected to a ratchet pivot at a corresponding position of the ratchet plate, and when the sliding plunger slides along the rear end of the gun barrel, the transmission torque between the pawl and the ratchet plate is in the positive direction;

[0013] The driving gear is rotatably installed in the mounting cavity through a rotating shaft, and the driving gear is located below the half-tooth gear and is meshed with the half-tooth gear. Triggers are fixedly mounted on the rotating shafts on both sides of the driving gear, and an arc spring is fixedly installed on the end face of the trigger close to the gun handle, and the other end of the arc spring is fixedly connected to the inner wall of the mounting cavity.

[0014] Preferably, the trigger component also includes an arc-shaped rod, one end of which is fixedly mounted on the inner wall of the mounting cavity, and the other end of which passes through the arc-shaped through cavity opened by the trigger and is slidably connected to the arc-shaped through cavity, and the rod head of the arc-shaped rod is fixedly mounted with a rod cap.

[0015] Preferably, the arc-shaped spring is sleeved on the arc-shaped rod.

[0016] Preferably, a flexible conduit is installed on the cavity opening of the gun barrel.

[0017] Compared with the related art, the gas pressure regulating gun provided by the utility model has the following beneficial effects:

[0018] This utility model adopts a dual-piston linkage design (first piston and second piston), combined with a spring energy storage release mechanism, which can instantly generate high-pressure airflow, shortening the reset time to seconds. The one-way transmission mechanism composed of the pawl and the ratchet plate ensures that the plunger only moves in the direction of the muzzle with pressure. The gun handle and trigger are ergonomic, and the gas injection operation can be completed with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of the gas pressure regulating gun provided by the present utility model;

[0020] Figure 2 for Figure 1A schematic cross-sectional view of the gun barrel shown;

[0021] Figure 3 for Figure 2 A schematic structural diagram of the gas injection component and the trigger component is shown;

[0022] Figure 4 for Figure 3 A schematic structural diagram of the gas injection component shown;

[0023] Figure 5 for Figure 3 Schematic diagram of the structure of the trigger component shown.

[0024] Numbers in the figure: 1. Gun barrel; 1a. Sliding groove; 1b. Mounting cavity; 11. Gun handle; 2. Gas injection component; 21. Sliding plunger; 21a. Groove; 211. Pullback plate; 22. First piston; 221. Intake valve; 23. Center link; 24. Second piston; 241. Exhaust valve; 25. Ratchet plate; 26. Spring; 3. Trigger component; 31. Half-tooth gear; 311. Ratchet; 312. Rotating rod; 32. Drive gear; 321. Rotating shaft; 33. Trigger; 34. Arc spring; 35. Arc rod; 4. Pressure gauge; 5. Flexible conduit. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0027] See also Figures 1 to 5 The embodiment of the present invention provides a gas pressure regulating gun, which includes a gun barrel 1, a gas injection component 2, a trigger component 3 and a pressure gauge 4. A gun handle 11 is fixedly installed at the tail end of the gun barrel 1, and both side walls of the gun barrel 1 close to the gun handle 11 are provided with sliding grooves 1a that are interconnected with the inner cavity of the gun barrel 1, and a mounting cavity 1b that is interconnected with the inner cavity of the gun barrel 1 is provided on the lower tube wall of the gun barrel 1 close to the gun handle 11, and a pressure gauge 4 is installed near the gun head of the gun barrel 1, and a flexible conduit 5 is installed on the cavity mouth of the gun barrel 1.

[0028] In the embodiments of the present invention, please refer to Figures 1 to 5, a gas injection component 2 is installed in the barrel 1, and the gas injection component 2 includes a sliding plunger 21, the sliding plunger 21 is slidably installed in the barrel 1, the front end head of the sliding plunger 21 is fixedly installed with a first piston 22, and a sliding connecting rod 23 is inserted on the sliding plunger 21, and a second piston 24 is fixedly installed on the rod head of the connecting rod 23, the second piston 24 is fixedly installed near the muzzle of the barrel 1, an intake valve 221 is fixedly installed on the first piston 22, and an exhaust valve 241 is fixedly installed on the second piston 24, and two symmetrically distributed pull-back plates 211 are fixedly installed at the tail of the sliding plunger 21, and the two pull-back plates 211 respectively extend out of the sliding grooves 1a opened on both sides of the barrel 1, and a ratchet plate 25 is fixedly installed at the bottom of the sliding plunger 21, and a spring 26 is fixedly installed at the tail of the sliding plunger 21, and the other end of the spring 26 is fixedly connected to the inner wall of the tail of the barrel 1;

[0029] The barrel 1 is mounted with a trigger assembly 3 for driving the sliding plunger 21 to slide. The trigger assembly 3 includes a half-toothed gear 31 and a drive gear 32. The half-toothed gear 31 is rotatably mounted within the mounting cavity 1b via a rotating rod 312. A pawl 311 is fixedly mounted on the portion of the half-toothed gear 31 where no gear is located. The pawl 311 is pivotally connected to a ratchet at a corresponding position on the ratchet plate 25. When the sliding plunger 21 slides along the rear end of the barrel 1, the torque transmitted between the pawl 311 and the ratchet plate 25 is in the positive direction.

[0030] The driving gear 32 is rotatably mounted in the mounting cavity 1b via a rotating shaft 321, and the driving gear 32 is located below the half-tooth gear 31 and meshed with the half-tooth gear 31. Triggers 33 are fixedly mounted on the rotating shafts 321 on both sides of the driving gear 32. An arc spring 34 is fixedly mounted on the end surface of the trigger 33 close to the gun handle 11, and the other end of the arc spring 34 is fixedly connected to the inner wall of the mounting cavity 1b.

[0031] It is worth noting that threaded joints are installed at both ends of the flexible conduit 5 and a docking screw is installed on the muzzle of the gun barrel 1 to facilitate the connection between the flexible conduit 5 and the gun barrel 1.

[0032] It should be noted that when the safety shut-off valve of the gas pressure regulating box (cabinet) is cut off, the threaded joint at the other end of the flexible conduit 5 is connected to the pressure measuring port of the gas pressure regulating box (cabinet), and then the pull-back plate 211 is pulled backward to drive the sliding plunger 21 to slide toward the tail of the barrel 1, and the middle link 23 slides out from the inner cavity of the sliding plunger 21. Since the transmission torque between the pawl 311 and the ratchet plate 25 is positive when the sliding plunger 21 slides along the tail of the barrel 1, the pawl 311 cannot lock the ratchet plate 25. During this process, gas can enter the cavity between the first piston 22 and the second piston 24 through the intake valve 221 on the first piston 22, and the spring 26 is compressed.

[0033] When the sliding plunger 21 slides to the rear of the barrel 1, the pull-back plate 211 is released. At this time, the pawl 311 locks the ratchet plate 25. Then, the gas pressure regulating gun is used to pump gas to the pressure measuring port. The specific operation is as follows:

[0034] When the trigger 33 is pulled, the trigger 33 compresses the arc spring 34, and at the same time drives the trigger drive gear 32 to deflect. Since the drive gear 32 is located below the half-toothed gear 31 and is meshed with the half-toothed gear 31, the half-toothed gear 31 rotates synchronously and drives the ratchet 311 to slip out of the tooth groove of the ratchet plate 25. Under the elastic force of the spring 26, the sliding plunger 21 drives the sliding plunger 21 to slide toward the muzzle of the barrel 1. At this time, the middle link 23 slides back into the inner cavity of the sliding plunger 21, so the first piston 22 presses the gas in the cavity between the first piston 22 and the second piston 24 and discharges it through the exhaust valve 241 to achieve air inflating the opposite pressure port. At the same time, the pressure gauge 4 is observed. Since the pressure measuring port is directly connected to the driving diaphragm chamber of the safety shut-off valve, air pressure is injected into the driving diaphragm chamber. When the value of the pressure gauge 4 reaches 1.5 times the outlet pressure, the shut-off valve is cut off, saving time and effort, and the overall operation is simple and convenient.

[0035] The present application adopts a dual-piston linkage design (a first piston 22 and a second piston 24), which, in conjunction with the energy storage and release mechanism of the spring 26, can instantly generate high-pressure airflow, shortening the reset time to seconds. The one-way transmission mechanism composed of the pawl 311 and the ratchet plate 25 ensures that the plunger only moves in the direction of the muzzle with boost pressure. Among them, the gun handle 11 and the trigger 33 are ergonomic, and the gas injection operation can be completed with one hand.

[0036] Furthermore, a groove 21 a is formed on the body of the sliding plunger 21 close to the first piston 22 , and air enters the barrel 1 through the sliding groove 1 a , and then the groove 21 a supplies air to the intake valve 221 .

[0037] Furthermore, the trigger component 3 also includes an arc-shaped rod 35, one end of which is fixedly mounted on the inner wall of the mounting cavity 1b, and the other end of the arc-shaped rod 35 passes through the arc-shaped through cavity opened by the trigger 33 and is slidably connected to the arc-shaped through cavity. The rod head of the arc-shaped rod 35 is fixedly mounted with a rod cap, and the arc-shaped spring 34 is sleeved on the arc-shaped rod 35. The arrangement of the arc-shaped rod 35 can avoid the hidden dangers of bending and twisting of the arc-shaped spring 34.

[0038] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas pressure regulating gun, comprising a gun barrel (1), a gun handle (11) being fixedly mounted at the rear end of the gun barrel (1), a sliding groove (1a) being formed on both side walls of the gun barrel (1) near the gun handle (11) and being communicated with the inner cavity of the gun barrel (1), and a mounting cavity (1b) being formed on the lower wall of the gun barrel (1) near the gun handle (11) and being communicated with the inner cavity of the gun barrel (1), characterized in that: The gun barrel (1) is provided with a gas injection component (2), and the gas injection component (2) includes a sliding plunger (21), the sliding plunger (21) is slidably installed in the gun barrel (1), a first piston (22) is fixedly installed on the front end of the sliding plunger (21), a slidingly connected middle link (23) is inserted into the sliding plunger (21), and a second piston (24) is fixedly installed on the rod head of the middle link (23), the second piston (24) is fixedly installed on the gun barrel (1) near the muzzle, an intake valve (221) is fixedly installed on the first piston (22), and an exhaust valve (241) is fixedly installed on the second piston (24); A ratchet plate (25) is fixedly mounted on the bottom of the sliding plunger (21), a spring (26) is fixedly mounted on the tail of the sliding plunger (21), and the other end of the spring (26) is fixedly connected to the inner wall of the tail of the gun barrel (1); The gun barrel (1) is provided with a trigger component (3) for driving the sliding plunger (21) to slide, and the gun barrel (1) is provided with a pressure gauge (4) near the gun head.

2. The gas pressure regulating gun according to claim 1, characterized in that: Two symmetrically distributed pull-back plates (211) are fixedly mounted on the tail of the sliding plunger (21), and the two pull-back plates (211) respectively extend out of the sliding grooves (1a) opened on both sides of the gun barrel (1).

3. The gas pressure regulating gun according to claim 1, characterized in that: A groove (21a) is provided on the column of the sliding plunger (21) close to the first piston (22).

4. The gas pressure regulating gun according to claim 1, characterized in that: The trigger component (3) includes a half-toothed gear (31) and a driving gear (32), the half-toothed gear (31) is rotatably mounted in the mounting cavity (1b) via a rotating rod (312), and a ratchet (311) is fixedly mounted on a portion of the half-toothed gear (31) where no gear is provided, the ratchet (311) is connected to a ratchet pivot at a corresponding position of the ratchet plate (25), and when the sliding plunger (21) slides along the rear end of the gun barrel (1), the transmission torque between the ratchet (311) and the ratchet plate (25) is in the positive direction; The driving gear (32) is rotatably mounted in the mounting cavity (1b) via a rotating shaft (321), and the driving gear (32) is located below the half-tooth gear (31) and is meshed with the half-tooth gear (31). Triggers (33) are fixedly mounted on the rotating shafts (321) on both sides of the driving gear (32), and an arc spring (34) is fixedly mounted on the end surface of the trigger (33) close to the gun handle (11), and the other end of the arc spring (34) is fixedly connected to the inner wall of the mounting cavity (1b).

5. The gas pressure regulating gun according to claim 4, characterized in that: The trigger component (3) further comprises an arc-shaped rod (35), one end of which is fixedly mounted on the inner wall of the mounting cavity (1b), and the other end of which passes through the arc-shaped through cavity formed in the trigger (33) and is slidably connected to the arc-shaped through cavity, and a rod cap is fixedly mounted on the rod head of the arc-shaped rod (35).

6. The gas pressure regulating gun according to claim 5, characterized in that: The arc spring (34) is sleeved on the arc rod (35).

7. The gas pressure regulating gun according to claim 1, characterized in that: A flexible conduit (5) is installed on the cavity opening of the gun barrel (1).

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