Leakage alarm control system of liquefied gas steel cylinder

Abstract

The utility model relates to a leakage alarm control system of a liquefied gas steel cylinder, and belongs to the technical field of liquefied gas steel cylinders, the control system comprises a connecting pipe installed between a valve of the liquefied gas steel cylinder and a pressure reducing valve; the ball valve is communicated with the connecting pipe and is used for opening and closing the connecting pipe; the detection pipe is mounted on one side, far away from the connecting pipe, of the pressure reducing valve, and is communicated with a hose communicated with a kitchen range; the pressure sensor is mounted in the detection pipe and is used for detecting the pressure in the detection pipe; the adjusting part is mounted on the connecting pipe and is used for adjusting the on-off of the ball valve; the controller is in communication connection with the pressure sensor and the adjusting part and is used for controlling the action of the adjusting part according to the pressure value; and the alarm is in communication connection with the controller and is used for executing an alarm action when the gas leaks. The pipeline leakage detection device has the beneficial effects that pipeline leakage can be detected in time, and potential safety hazards are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of liquefied gas cylinders, and in particular to a leakage alarm control system for liquefied gas cylinders. Background Art

[0002] With the development of petrochemicals, liquefied petroleum gas, as a chemical raw material and fuel, has become more and more popular. The most common way to store, transport and use liquefied petroleum gas is in cylinders. Because of its convenience, cylinder liquefied gas has a large usage in certain fields, especially in remote rural areas or small restaurants or mobile restaurants where pipeline gas is not popular. It is widely used, but it also brings many safety hazards. Due to its high density, liquefied gas sinks and floats on the ground when it leaks. Even if there is a bad smell, it is not easy to attract people's attention. In addition, with its low explosion limit and high combustion energy, it is very easy to explode when encountering sparks, and the explosion is huge. According to statistics, cylinder liquefied gas accounts for more than half of gas accidents. The safety management of cylinder liquefied gas has become one of the important tasks of local governments or gas companies.

[0003] When using liquefied gas in a cylinder, open the valve of the liquefied gas cylinder, and the gas first passes through the pressure reducing valve / regulator to reach the specified stable pressure, and then enters the stove through the pipeline. There are many ways to connect the liquefied gas cylinder to the stove, most of which are made of soft materials, and the most common is the rubber hose.

[0004] As the hose is used for a long time, it is prone to aging. And because the cylinder needs to be replaced regularly or is frequently moved during use, it is easy for the hose to crack or be easily bitten by rats. Therefore, the pipeline is prone to leakage, causing safety hazards. Utility Model Content

[0005] In order to detect pipeline leakage in time to avoid potential safety hazards, the present application provides a leakage alarm control system for a liquefied gas cylinder, which adopts the following technical solution:

[0006] A leakage alarm control system for a liquefied gas cylinder, comprising:

[0007] Connecting pipe, installed between the valve and pressure reducing valve of the liquefied gas cylinder;

[0008] A ball valve connected to the connecting pipe and used for opening and closing the connecting pipe;

[0009] A detection tube is installed on a side of the pressure reducing valve away from the connecting tube and is connected to a hose leading to the cooker;

[0010] A pressure sensor, installed in the detection tube, for detecting the pressure in the detection tube;

[0011] An adjusting component, installed on the connecting pipe, for adjusting the on-off state of the ball valve;

[0012] A controller, respectively connected to the pressure sensor and the regulating component for controlling the action of the regulating component according to the pressure value;

[0013] The alarm is connected to the controller for executing an alarm action when a gas leak occurs.

[0014] By adopting the above technical solution, when no leakage occurs, the pressure value detected by the pressure sensor is in a constant state. When the pressure value detected by the pressure sensor is lower than the pressure value in the constant state, it indicates that a leakage has occurred. Therefore, the controller can easily control the action of the regulating component, and the regulating component adjusts the ball valve to close. At the same time, the controller controls the alarm to execute the alarm action; thereby, leakage in the pipeline can be detected in time to avoid safety hazards.

[0015] Optionally, the alarm control system further includes:

[0016] An impeller, rotatably connected to the connecting pipe;

[0017] A rotation speed sensor is installed on the impeller and is used to detect the rotation speed of the impeller; the rotation speed sensor is communicatively connected with the controller.

[0018] By adopting the above technical solution, after manually opening the valve of the liquefied gas cylinder, the gas enters the hose, and when passing through the connecting pipe, it drives the impeller to rotate. After the speed sensor detects the impeller speed, the controller determines that it is in the gas use state. In the gas use state, if the pressure value detected by the pressure sensor is less than the pressure value detected when there is no leakage, it means that the gas has leaked; if the speed sensor does not detect the impeller speed, it means that the liquefied gas cylinder is not in use, so the controller can easily control the action of the regulating component, and the regulating component adjusts the ball valve to close.

[0019] Optionally, both ends of the connecting tube and the detection tube are fixedly connected with a first sleeve; the hose is fixedly connected with a second sleeve, and the first sleeve and the second sleeve are threadedly connected.

[0020] By adopting the above technical solution, the disassembly and installation of the connecting pipe, the detection pipe and the hose can be facilitated.

[0021] Optionally, the adjusting component includes:

[0022] Rotate the plate;

[0023] Two clamping jaws are provided for clamping the ball valve, and the two clamping jaws are connected to the rotating plate by sliding toward or away from each other;

[0024] The rotating component is installed on the connecting pipe and is used to drive the rotating plate to rotate.

[0025] By adopting the above technical solution, when adjusting the ball valve to close or open, the two clamping jaws can move towards each other to clamp the ball valve, and then the rotating plate is driven to rotate clockwise or counterclockwise through the rotating component to open or close the ball valve.

[0026] Optionally, a bidirectional cylinder is installed on the rotating plate, and the two clamping jaws are respectively installed on two piston rods corresponding to the bidirectional cylinder; the bidirectional cylinder is communicatively connected with the controller.

[0027] By adopting the above technical solution, the extension and contraction of the bidirectional cylinder can realize the sliding of the two clamping jaws towards or away from each other.

[0028] Optionally, the rotating component includes:

[0029] A rotating motor is mounted on the connecting pipe and is in communication connection with the controller;

[0030] A main pulley, coaxially and fixedly connected to the rotating motor;

[0031] The slave pulley is rotatably connected to the rotating plate and is cyclically connected to the main pulley through a belt.

[0032] By adopting the above technical solution, when the rotating motor drives the main pulley to rotate, the main pulley will drive the slave pulley to rotate, thereby realizing the rotation of the rotating plate.

[0033] Optionally, the alarm control system further includes:

[0034] There are two auxiliary half pipes, which are connected to form a complete auxiliary pipe. The auxiliary pipe is sleeved on the hose. The auxiliary half pipe houses the connecting pipe, the detection pipe and the adjusting component.

[0035] Two fixing blocks are provided, both of which are coaxially fixedly connected to the hose and are respectively arranged at both ends of the auxiliary half pipe;

[0036] A telescopic rod, which is arranged corresponding to the fixed block, and a fixed end is fixedly connected to the fixed block;

[0037] The stabilizing tube is sleeved on the hose and is arranged at both ends of the auxiliary half-tube; the stabilizing tube can be threadedly connected with the auxiliary half-tube; the telescopic end of the telescopic rod is rotatably connected with the stabilizing tube.

[0038] By adopting the above technical solution, the purpose of setting up the auxiliary half-pipe is to protect the hose, connecting pipe, detection tube and adjustment component; and by setting a stabilizing tube threadedly connected to the two auxiliary half-pipes, the auxiliary half-pipe can be easily disassembled, thereby facilitating the later disassembly of the connecting pipe and detection tube, and the maintenance of the adjustment component.

[0039] Optionally, the alarm control system further includes:

[0040] A lead screw, rotatably connected to the auxiliary half-tube;

[0041] A nut seat, threadably connected to the lead screw and slidably connected to the auxiliary half-tube;

[0042] A gas concentration sensor is installed on the nut holder, is connected to the controller for communication, and is used to detect the gas concentration;

[0043] The driving motor is mounted on the auxiliary half pipe, and the output shaft is coaxially fixedly connected with the lead screw through a coupling.

[0044] By adopting the above technical solution, although it is possible to determine whether the gas is leaking based on the pressure detected by the pressure sensor, the specific leakage point cannot be roughly determined, especially when the pipeline is relatively long. Therefore, the gas concentration sensor can be driven to move along the pipeline. The concentration at the leakage point is usually the largest, so the approximate range of the leakage point can be determined by the gas concentration sensor.

[0045] In summary, the present application has at least the following beneficial effects:

[0046] 1. The purpose of setting the ball valve, pressure sensor, regulating component, alarm and controller is that when no leakage occurs, the pressure value detected by the pressure sensor is in a constant state. When the pressure value detected by the pressure sensor is lower than the pressure value in the constant state, it indicates that a leakage has occurred. Therefore, the controller is convenient for controlling the action of the regulating component, and the regulating component adjusts the ball valve to close. At the same time, the controller controls the alarm to execute the alarm action; thereby, leakage in the pipeline can be detected in time to avoid safety hazards.

[0047] 2. The purpose of setting the impeller and speed sensor is that after the valve of the liquefied gas cylinder is manually opened, the gas enters the hose and drives the impeller to rotate when passing through the connecting pipe. After the speed sensor detects the impeller speed, the controller determines that it is in the gas use state. In the gas use state, if the pressure value detected by the pressure sensor is lower than the pressure value detected when there is no leakage, it means that the gas has leaked; if the speed sensor does not detect the impeller speed, it means that the liquefied gas cylinder is not in use. Therefore, the controller can easily control the action of the regulating component, and the regulating component adjusts the ball valve to shut off, further reducing safety hazards.

[0048] 3. The purpose of setting up a gas concentration sensor is to provide double safety protection. When a gas leak occurs, the gas valve can be closed in time to prevent the leak. At the same time, the pipeline leak point can be found according to the different gas leakage concentrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall structure of an implementation method of the present application;

[0050] Figure 2 It is the control structure block diagram of this application;

[0051] Figure 3 yes Figure 1 A magnified schematic diagram of the structure of part A;

[0052] Figure 4 It is a structural schematic diagram of another embodiment of the present application;

[0053] Figure 5 It is a structural schematic diagram showing the connection relationship between the fixed block, the telescopic rod and the stabilizing tube;

[0054] Figure 6 It is a schematic diagram of the structure of the auxiliary half pipe.

[0055] Explanation of the reference numerals: 100, connecting pipe; 101, first sleeve; 102, second sleeve; 104, speed sensor; 200, ball valve; 300, detection tube; 400, adjusting component; 410, rotating plate; 420, clamping claw; 430, rotating component; 431, rotating motor; 432, main pulley; 433, slave pulley; 440, bidirectional cylinder; 450, mounting ring; 500, pressure sensor; 600, controller; 700, alarm; 800, auxiliary half pipe; 801, connecting block; 810, fixing block; 820, telescopic rod; 830, stabilizing tube; 840, lead screw; 850, nut seat; 860, gas concentration sensor; 870, driving motor. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended Figure 1 -Attached Figure 6 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] The present application embodiment discloses a leakage alarm control system for a liquefied gas cylinder. Figure 1 As an embodiment of the alarm control system, the alarm control system may include a connecting pipe 100, a ball valve 200, a detection tube 300 and an adjusting component 400. The connecting pipe 100 is installed between the valve of the liquefied gas cylinder and the pressure reducing valve; the ball valve 200 is connected to the connecting pipe 100 and is used to open and close the connecting pipe 100; the adjusting component 400 is installed on the connecting pipe 100 and is used to adjust the opening and closing of the ball valve 200; the detection tube 300 is installed on the side of the pressure reducing valve away from the connecting pipe 100.

[0058] In order to realize the installation between the connecting pipe 100, the detection tube 300 and the hose; a second sleeve 102 is fixedly connected to the hose, and a first sleeve 101 is fixedly connected to both ends of the connecting pipe 100 and the detection tube 300, and the first sleeve 101 is threadedly connected to the second sleeve 102.

[0059] Reference Figure 2 The alarm control system may further include a pressure sensor 500, a controller 600 and an alarm 700. The pressure sensor 500 is installed in the detection tube 300 to detect the pressure in the detection tube 300; the controller 600 is respectively connected to the pressure sensor 500, the adjustment component 400 and the alarm 700 for controlling the action of the adjustment component 400 and controlling the alarm 700 to perform an alarm action according to the pressure value. The alarm 700 may be installed on the detection tube 300.

[0060] Reference Figure 1 and Figure 2 In order to further reduce the potential safety hazard, an impeller (not shown in the figure) is also connected to the connecting pipe 100 through a rotating shaft, and a speed sensor 104 is installed on the impeller. When there is gas flow in the connecting pipe 100, the impeller will be driven to rotate, and the speed sensor 104 will detect the impeller speed. The speed sensor 104 is connected to the controller 600 for communication. When the speed sensor 104 detects that the impeller speed is 0, it means that the gas in the detection tube 300 is not in a flowing state, so it can be judged that it is in an unused gas state, and the controller 600 can control the regulating component 400 to adjust the ball valve 200 to shut off. If the speed sensor 104 detects the impeller speed, it means that the gas in the detection tube 300 is in a flowing state, so it can be judged that it is in a gas-using state at this time. In the gas-using state, it can be judged whether the pipeline is leaking based on the pressure in the detection tube 300 detected by the pressure sensor 500.

[0061] Reference Figure 3As an embodiment of the adjusting component 400, the adjusting component 400 may include a rotating plate 410, a clamping jaw 420 and a rotating component 430. The rotating component 430 is installed on the connecting pipe 100 and is used to drive the rotation of the rotating plate 410. Two clamping jaws 420 are provided, and the two clamping jaws 420 are connected to the rotating plate 410 by sliding toward or away from each other, and are used to clamp the ball valve 200.

[0062] In order to achieve the sliding of the two clamping jaws 420, a bidirectional cylinder 440 is installed on the rotating plate 410 by bolts, and the piston rods of the bidirectional cylinder 440 are respectively connected to the corresponding clamping jaws 420. The clamping jaws 420 can be installed on the piston rod by bolts.

[0063] The rotating component 430 may include a rotating motor 431, a main pulley 432 and a slave pulley 433. A mounting ring 450 is coaxially fixedly connected to the connecting tube 100, and the rotating motor 431 is mounted on the mounting ring 450 through a bracket. The main pulley 432 is coaxially fixedly connected to the rotating motor 431; the slave pulley 433 is rotatably connected to the rotating plate 410 through a rotating shaft, and the main pulley 432 is cyclically connected to the slave pulley 433 through a belt. The rotating motor 431 is connected to the controller 600 for communication (such as Figure 2 as shown).

[0064] Reference Figure 4 and Figure 5 As another embodiment of the alarm control system, the alarm control system may further include an auxiliary half-tube 800, a fixed block 810, a telescopic rod 820 and a stabilizing tube 830. There are two auxiliary half-tubes 800, and after the two auxiliary half-tubes 800 are abutted, a complete auxiliary tube is formed, and the complete auxiliary tube is sleeved on the hose. The auxiliary tube covers the connecting tube 100, the detection tube 300 and the adjustment component 400. There are two fixed blocks 810, which are coaxially fixedly connected to the hose and are arranged at both ends of the auxiliary half-tube 800. The fixed end of the telescopic rod 820 is fixedly connected to the fixed block 810, and the telescopic end is rotatably connected to the stabilizing tube 830. The stabilizing tube 830 is sleeved on the hose, and the stabilizing tube 830 is threadedly connected to the two auxiliary half-tubes 800 to achieve the connection between the two auxiliary half-tubes 800.

[0065] In order to achieve the threaded connection between the stabilizing tube 830 and the two auxiliary half-tubes 800 , a connecting block 801 is fixedly connected to the two auxiliary half-tubes 800 , and the connecting block 801 is threadedly connected to the stabilizing tube 830 .

[0066] Reference Figure 6A lead screw 840 is rotatably connected to the auxiliary half pipe 800 through a bearing seat, and a nut seat 850 is threadedly connected to the lead screw 840. The nut seat 850 is slidably connected to the auxiliary half pipe 800. A gas concentration sensor 860 is bolted to the nut seat 850, and the gas concentration sensor 860 is used to detect the gas concentration in the auxiliary half pipe 800. A drive motor 870 is bolted to the auxiliary half pipe 800, and the output shaft of the drive motor 870 is coaxially fixedly connected to one end of the lead screw 840 through a coaxial coupling. The drive motor 870 and the gas concentration sensor 860 are both connected to the controller 600 for communication (such as Figure 2 as shown).

[0067] The implementation principle of this embodiment is:

[0068] Under normal conditions, the ball valve 200 is in a normally open state; when using gas, the impeller rotates under the flow of gas, and the speed sensor 104 detects the speed of the impeller; the pressure sensor 500 detects the pressure in the detection tube 300, and when the pressure becomes smaller, the controller 600 controls the alarm 700 to perform an alarm action, and controls the rotating motor 431 to reverse, and the rotating motor 431 drives the rotating plate 410 to rotate, so that the clamping claw 420 drives the ball valve 200 to close; then the controller 600 controls the driving motor 870 to start, the driving motor 870 drives the lead screw 840 to rotate, the lead screw 840 drives the nut seat 850 to move, and the nut seat 850 drives the gas concentration sensor 860 to move along the pipeline to find the leakage point; after finding it, the stabilizing tube 830 is rotated to make the stabilizing tube 830 separate from the auxiliary half pipe 800, and then the auxiliary half pipe 800 is disassembled, and the position of the nut seat 850 is the approximate position of the leakage point, so as to facilitate the rapid determination of the leakage point.

[0069] In addition, if the speed sensor 104 detects that the speed of the impeller is 0, it means that air is no longer needed at this time, so the controller 600 controls the rotary motor 431 to reverse, so that the clamp 420 drives the ball valve 200 to close.

[0070] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application in sequence. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A leakage alarm control system for a liquefied gas cylinder, characterized in that: include: A connecting pipe (100) is installed between the valve of the liquefied gas cylinder and the pressure reducing valve; A ball valve (200) connected to the connecting pipe (100) and used for opening and closing the connecting pipe (100); A detection tube (300) is installed on a side of the pressure reducing valve away from the connecting tube (100) and is connected to a hose leading to the cooker; A pressure sensor (500) is installed in the detection tube (300) and is used to detect the pressure in the detection tube (300); An adjusting component (400) is installed on the connecting pipe (100) and is used to adjust the on / off state of the ball valve (200); a controller (600), respectively connected to the pressure sensor (500) and the regulating component (400) for communicating with each other, and used to control the action of the regulating component (400) according to the pressure value; The alarm (700) is connected to the controller (600) for performing an alarm action when a gas leak occurs.

2. A leakage alarm control system for a liquefied gas cylinder according to claim 1, characterized in that: The alarm control system also includes: An impeller, rotatably connected to the connecting pipe (100); A rotation speed sensor (104) is mounted on the impeller and is used to detect the rotation speed of the impeller; the rotation speed sensor (104) is communicatively connected to the controller (600).

3. A leakage alarm control system for a liquefied gas cylinder according to claim 1, characterized in that: Both ends of the connecting tube (100) and the detection tube (300) are fixedly connected to a first sleeve (101); a second sleeve (102) is fixedly connected to the hose, and the first sleeve (101) and the second sleeve (102) are threadedly connected.

4. A leakage alarm control system for a liquefied gas cylinder according to claim 2, characterized in that: The adjusting component (400) comprises: Rotating plate (410); Two clamping jaws (420) are provided and are used to clamp the ball valve (200), and the two clamping jaws (420) are connected to the rotating plate (410) by sliding toward or away from each other; The rotating component (430) is mounted on the connecting pipe (100) and is used to drive the rotating plate (410) to rotate.

5. A leakage alarm control system for a liquefied gas cylinder according to claim 4, characterized in that: A bidirectional cylinder (440) is mounted on the rotating plate (410), and the two clamping jaws (420) are respectively mounted on two piston rods corresponding to the bidirectional cylinder (440); the bidirectional cylinder (440) is communicatively connected to the controller (600).

6. A leakage alarm control system for a liquefied gas cylinder according to claim 4, characterized in that: The rotating component (430) comprises: A rotating motor (431) is mounted on the connecting pipe (100) and connected to the controller (600); A main pulley (432) is coaxially and fixedly connected to the rotating motor (431); The slave pulley (433) is rotationally connected to the rotating plate (410) and is cyclically connected to the main pulley (432) via a belt.

7. A leakage alarm control system for a liquefied gas cylinder according to claim 1, characterized in that: The alarm control system also includes: Two auxiliary half-tubes (800) are provided. When the two auxiliary half-tubes (800) are connected, a complete auxiliary tube is formed. The auxiliary tube is sleeved on the hose. The auxiliary half-tube (800) covers the connecting tube (100), the detection tube (300) and the adjustment component (400). Two fixing blocks (810) are provided, both of which are coaxially fixedly connected to the hose and are respectively provided at both ends of the auxiliary half pipe (800); A telescopic rod (820) is arranged corresponding to the fixing block (810), and a fixing end is fixedly connected to the fixing block (810); The stabilizing tube (830) is sleeved on the hose and is disposed at both ends of the auxiliary half-tube (800); the stabilizing tube (830) can be threadedly connected to the auxiliary half-tube (800); and the telescopic end of the telescopic rod (820) is rotatably connected to the stabilizing tube (830).

8. A leakage alarm control system for a liquefied gas cylinder according to claim 7, characterized in that: The alarm control system also includes: A lead screw (840) is rotatably connected to the auxiliary half pipe (800); A nut seat (850) is threadedly connected to the lead screw (840) and is slidably connected to the auxiliary half pipe (800); A gas concentration sensor (860) is mounted on the nut holder (850), is communicatively connected with the controller (600), and is used to detect the gas concentration; A driving motor (870) is mounted on the auxiliary half pipe (800), and an output shaft is coaxially fixedly connected to the lead screw (840) via a coupling.

Images