A portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines.

Abstract

This utility model discloses a portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines, relating to the field of hydrogen energy safety technology. Its key technical features include a main body with an outer shell on top, a switch assembly inside the main body, a top cover on the top of the outer shell, a rotating rod rotatably mounted inside the outer shell, a sleeve joint rotatably mounted inside the main body, a motor fixedly connected to the bottom of the top cover, the motor output end fixedly connected to the top of the rotating rod, and a rotating shaft fixedly connected to the top of the sleeve joint. The switch assembly includes a fixed cylinder on one side of the main body, a contact switch on one side inside the fixed cylinder, a button slidably mounted on one side of the fixed cylinder, a contact rod fixedly connected to one end of the button, and an insert plate inserted inside the fixed cylinder. The technical advantage is that the switch assembly controls the power supply inside the main body, thereby enabling the motor to start and stop. This prevents the motor from starting under normal conditions and avoids accidental activation, ensuring safe and reliable use.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy safety technology, specifically a portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines. Background Technology

[0002] Hydrogen energy, as a clean energy source, is typically stored and transported in a high-pressure gaseous form. High-pressure valves are extensively used in hydrogen refueling stations and hydrogen pipelines to control the flow and pressure of the gas. The sealing performance of these valves is crucial; leaks can easily lead to catastrophic accidents such as combustion and explosion. The reliable sealing of valves largely depends on the tightening torque of bolts or valve stems during installation and maintenance. Insufficient torque results in inadequate pressure on the sealing surface, leading to leaks; excessive torque can damage seals, valve stem threads, or deform the valve body, also creating potential leakage hazards. Therefore, regular torque testing and calibration of high-pressure hydrogen pipeline valves is a core element in ensuring the safe operation of the system.

[0003] To improve detection efficiency and accuracy, some portable electric torque devices have emerged on the market. These devices, through built-in motors and torque sensors, replace traditional manual wrenches and achieve quantitative torque application. However, existing electric torque devices typically use a simple button or trigger to start the motor. This design is prone to misoperation in complex industrial environments. Due to the complex environment, operators often need to wear heavy protective gloves and work in narrow, poorly lit spaces, which significantly reduces their finger dexterity and flexibility, making it easy to accidentally touch the start button. Furthermore, high-pressure hydrogen valves usually require a large torque, and the sudden start of the motor will generate an impact torque pulse. If the sleeve joint is not fully engaged with the bolt, it will cause the sleeve to slip off, damaging not only the bolt and nut, but also potentially causing the flying metal parts to impact the fragile hydrogen pipeline, leading to more serious safety accidents.

[0004] Therefore, it is necessary to provide a portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines to solve the above-mentioned technical problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0007] To address the shortcomings of existing technologies, this utility model provides a portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines. This solves the problem that existing electric torque devices typically use a simple button or trigger to start the motor. This design is prone to misoperation in complex industrial environments, and if the sleeve joint is not fully engaged with the bolt, the sleeve may slip off, damaging the bolt and nut. Furthermore, flying metal parts may impact the fragile hydrogen pipeline, causing more serious safety accidents.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a portable device for detecting the opening and closing torque of a valve in a high-pressure hydrogen pipeline, comprising a body, a shell on the top of the body, a switch assembly inside the body, a top cover on the top of the shell, a rotating rod rotatably mounted inside the shell, a sleeve joint rotatably mounted inside the body, a motor fixedly connected to the bottom of the top cover, the output end of the motor fixedly connected to the top of the rotating rod, and a rotating shaft fixedly connected to the top of the sleeve joint.

[0010] Preferably, the switch assembly includes a fixed cylinder disposed on one side of the body, a contact switch disposed on one side inside the fixed cylinder, a button slidably disposed on one side of the fixed cylinder, a contact rod fixedly connected to one end of the button, and an insert plate inserted inside the fixed cylinder.

[0011] Preferably, the contact switch is electrically connected to the motor.

[0012] Preferably, a limiting block is fixedly connected to the top of the contact rod, and a through groove corresponding to the limiting block is opened inside the insert plate.

[0013] Preferably, a limiting plate is fixedly connected to the outside of the contact rod, and a first spring is fixedly connected to one end of the limiting plate.

[0014] Preferably, a second spring is fixedly connected to the bottom of the insert plate.

[0015] Preferably, a plug is fixedly connected to the bottom of the rotating rod, and a slot for cooperating with the plug is provided on the top of the rotating shaft.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines, which has the following advantages:

[0018] I. This utility model, when the button is pressed, slides within the fixed cylinder, causing the contact rod to move and contact the contact point at one end of the contact switch, triggering the internal power supply to connect and start the motor. When the anti-touch function needs to be activated, the insert plate is pressed down and slides through the through groove outside the contact rod. At this time, the top outer wall of the contact rod contacts the top of the through groove, limiting the movement path of the limit block. The contact rod cannot move, thus preventing accidental touch. When the motor needs to be started, simply pull the insert plate up to allow the through groove to make way for the limit block.

[0019] 2. When the button of this utility model is not pressed, the limiting plate and the first spring keep the contact rod and the contact switch separated. At this time, the circuit is in the open state. When an external force is applied to press the button, the contact rod slides to one side along the inside of the fixed cylinder until the end contacts the contact point of the contact switch. The pressure applied by the contact rod closes the contact point, and the current passes through the conductive circuit formed by the copper alloy bimetallic sheet, triggering the motor to be energized. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the switch assembly structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the body of this utility model;

[0024] Figure 4 This is a schematic diagram of the motor and shaft structure of this utility model.

[0025] In the picture:

[0026] 1. Body; 2. Outer shell; 3. Switch assembly; 31. Fixing cylinder; 32. Contact switch; 33. Button; 34. Contact rod; 35. Insert plate; 36. Limit block; 37. Through slot; 4. Top cover; 5. Rotating rod; 6. Sleeve connector; 7. Motor; 8. Rotating shaft; 9. Limit plate; 10. First spring; 11. Second spring; 12. Insert block; 13. Slot. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] This utility model provides a technical solution:

[0032] Please see Figures 1-4 A portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines includes a body 1, a shell 2 on the top of the body 1, a switch assembly 3 inside the body 1, a top cover 4 on the top of the shell 2, a rotating rod 5 rotatably mounted inside the shell 2, a sleeve joint 6 rotatably mounted inside the body 1, a motor 7 fixedly connected to the bottom of the top cover 4, the output end of the motor 7 being fixedly connected to the top of the rotating rod 5, and a rotating shaft 8 fixedly connected to the top of the sleeve joint 6.

[0033] It should be noted that the internal power supply of the machine body 1 is controlled by the switch assembly 3, thereby enabling the motor 7 to be started and stopped. This ensures that the motor 7 will not start under normal conditions and will not be accidentally started, making it safe and reliable to use. The top cover 4 is bolted to the top of the outer casing 2, facilitating the installation and removal of the motor 7. It is fixedly connected to the rotating shaft 8 at the top of the sleeve joint 6 via the rotating rod 5. When the motor 7 is turned on, it drives the sleeve joint 6 to rotate. The sleeve joint 6 is used to connect to the valve bolt or valve stem. The machine body 1 also integrates a torque sensor, installed between the motor 7 and the sleeve joint 6, for accurately measuring the torque output of the motor 7. The operator uses the handle on the top of the top cover 4 to place the sleeve joint 6 onto the valve bolt, and then safely starts the motor 7 via the switch assembly 3. The motor 7 drives the sleeve joint 6 to smoothly apply torque, and the torque sensor provides a torque value indication, thus greatly improving the efficiency and safety of maintenance work.

[0034] Furthermore, the switch assembly 3 includes a fixed cylinder 31 disposed on one side of the body 1, a contact switch 32 disposed on one side inside the fixed cylinder 31, a button 33 slidably disposed on one side of the fixed cylinder 31, a contact rod 34 fixedly connected to one end of the button 33, and an insert plate 35 inserted inside the fixed cylinder 31.

[0035] Contact switch 32 is electrically connected to motor 7.

[0036] The top of the contact rod 34 is fixedly connected to the limit block 36, and the insert plate 35 has a through groove 37 corresponding to the limit block 36.

[0037] It should be noted that when button 33 is pressed, button 33 slides inside the fixed cylinder 31 and drives the contact rod 34 to move, so that the contact rod 34 contacts the contact point at one end of the contact switch 32, triggering the internal power supply of the machine body 1 to turn on the motor 7. When the anti-touch function needs to be turned on, press the insert plate 35 to move it down. The insert plate 35 slides outside the contact rod 34 through the through groove 37. At this time, the top outer wall of the contact rod 34 contacts the top of the through groove 37, so that the insert plate 35 limits the movement path of the limit block 36. The contact rod 34 cannot move, thus achieving the effect of preventing accidental touch. When the motor 7 needs to be turned on, simply pull the insert plate 35 up to move it up, so that the through groove 37 makes way for the limit block 36.

[0038] It should be noted that: the contact rod has a direct conduction function: the contact rod triggers the contact switch to close its contacts through a pressing action, directly forming a current path and connecting the motor's main circuit. This process does not require an additional power supply starting module; the current directly drives the motor through the contacts. Furthermore, it uses a single-phase AC series-wound motor, whose rated voltage is directly supplied by the mains power. After the contact switch closes, the current flows directly to the motor windings. The circuit structure is simplified: this device adopts a direct start method, that is, the switch contacts are directly connected to the main circuit, without the need for voltage reduction or intermediate control devices. The current triggered by the contact rod directly acts on the motor, which conforms to the general solution of simplifying circuits and reducing costs for small and medium-sized equipment.

[0039] Furthermore, a limiting plate 9 is fixedly connected to the outer side of the contact rod 34, and a first spring 10 is fixedly connected to one end of the limiting plate 9.

[0040] A second spring 11 is fixedly connected to the bottom of the insert plate 35.

[0041] It should be noted that when button 33 is not pressed, the limiting plate 9 and the first spring 10 keep the contact rod 34 separated from the contact switch 32, and the circuit is in an open state. When an external force is applied to press button 33, the contact rod 34 slides to one side along the inside of the fixed cylinder 31 until its end contacts the contact point of the contact switch 32. The pressure applied by the contact rod 34 closes the contact point, and current flows through the conductive circuit formed by the copper alloy bimetallic strip, triggering the motor 7 to be energized. This design conforms to the response characteristics of an instantaneous trigger switch, ensuring that the pressing action is synchronized with the circuit opening and closing.

[0042] Furthermore, a plug 12 is fixedly connected to the bottom of the rotating rod 5, and a slot 13 is provided on the top of the rotating shaft 8 to cooperate with the plug 12.

[0043] It should be noted that when the top cover 4 is fixed to the top of the outer shell 2, the rotating rod 5 at the bottom of the top cover 4 is inserted into the slot 13 at the top of the rotating shaft 8 through the bottom insert 12, so that the rotating shaft 8 and the rotating rod 5 can be quickly engaged, which facilitates connection and disassembly.

[0044] In practical use, the working principle of this utility model is as follows:

[0045] The operator uses the top handle of the top cover 4 to place the sleeve connector 6 onto the valve bolts. When the button 33 is pressed, the button 33 slides inside the fixed cylinder 31 and moves the contact rod 34, causing the contact rod 34 to contact the contact point at one end of the contact switch 32, triggering the internal power supply of the machine body 1 and turning on the motor 7. When the anti-touch function needs to be activated, the insert plate 35 is pressed down and moved. The insert plate 35 slides outside the contact rod 34 through the through groove 37. At this time, the top outer wall of the contact rod 34 contacts the top of the through groove 37, so that the insert plate 35 limits the movement path of the limit block 36, and the contact rod 34 cannot move, thus achieving the effect of preventing accidental touch. When the motor 7 needs to be turned on, simply pull the insert plate 35 up to make the through groove 37 give way to the limit block 36. After the motor 7 starts, it drives the sleeve connector 6 to apply torque smoothly, and the torque value is indicated by the torque sensor, thereby greatly improving the efficiency and safety of maintenance work.

[0046] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A portable device for detecting the opening and closing torque of valves in high-pressure hydrogen pipelines, characterized in that, The device includes a body (1), a shell (2) on the top of the body (1), a switch assembly (3) inside the body (1), a top cover (4) on the top of the shell (2), a rotating rod (5) rotatably disposed inside the shell (2), a sleeve joint (6) rotatably disposed inside the body (1), a motor (7) fixedly connected to the bottom of the top cover (4), the output end of the motor (7) fixedly connected to the top of the rotating rod (5), and a rotating shaft (8) fixedly connected to the top of the sleeve joint (6).

2. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 1, characterized in that: The switch assembly (3) includes a fixed cylinder (31) disposed on one side of the body (1), a contact switch (32) is disposed on one side inside the fixed cylinder (31), a button (33) is slidably disposed on one side of the fixed cylinder (31), a contact rod (34) is fixedly connected to one end of the button (33), and an insert plate (35) is inserted inside the fixed cylinder (31).

3. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 2, characterized in that: The contact switch (32) is electrically connected to the motor (7).

4. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 3, characterized in that: The top of the contact rod (34) is fixedly connected to a limiting block (36), and the insert plate (35) has a through groove (37) corresponding to the limiting block (36).

5. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 4, characterized in that: The contact rod (34) is fixedly connected to a limiting plate (9) on the outside, and a first spring (10) is fixedly connected to one end of the limiting plate (9).

6. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 5, characterized in that: A second spring (11) is fixedly connected to the bottom of the insert plate (35).

7. The portable device for detecting the opening and closing torque of a high-pressure hydrogen pipeline valve according to claim 1, characterized in that: The bottom of the rotating rod (5) is fixedly connected to a plug (12), and the top of the rotating shaft (8) is provided with a slot (13) that works with the plug (12).

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