Gas filling device for gas extinguishing agent

Abstract

The utility model discloses a gas filling device for a gaseous extinguishing agent, which comprises a gas source frame for accommodating a gas source; the weighing equipment is positioned right below the gas source frame or the gas cylinder and is used for weighing the gas source weight or the gas cylinder weight in the gas source frame; the head end of the air source pipe is communicated with an air source; the tail end of the air source pipe is communicated with the interior of the control head through an air inlet valve; the pressure relief pipe is communicated with the interior of the control head through the hush pipe and the pressure relief valve in sequence; the head end of the recovery pipe is communicated with the interior of the control head through a recovery valve; the head end of the vacuum pipe communicates with the interior of the control head through a vacuum valve; the vertical lifting unit is communicated with the interior of the control head; the filling part is fixedly connected with the vertical lifting control unit in a vertically downward manner, and vertically lifts and moves under the control of the vertical lifting control unit; and the screwing control unit is arranged on the outer side of the filling piece and controls the filling piece to rotate to be screwed or loosened with the gas cylinder connector. According to the utility model, the noise in the filling process can be reduced, and meanwhile, the filled fire extinguishing agent gas is recycled and prevented from directly entering the air.

Description

Technical Field

[0001] The utility model relates to the field of gas cylinder filling, in particular to a gas fire extinguishing agent filling device. Background Art

[0002] Gaseous fire extinguishing agents are one of the most common types of fire extinguishing agents, including carbon dioxide and heptafluoropropane. When extinguishing a fire, the extinguishing gas displaces air and surrounds the burning object or distributes it within a relatively confined space, reducing the oxygen concentration around the combustible material or within the protected space, creating a suffocating effect and extinguishing the fire. Furthermore, when liquefied gas is ejected from its storage container, it rapidly vaporizes, absorbing some heat from the surrounding area and acting as a cooling agent.

[0003] When filling gas fire extinguishing agent, it is necessary to connect the gas cylinder with the gas source, and then open their respective valves to allow the fire extinguishing agent in the gas source to be filled into the gas cylinder, and use weighing equipment to weigh the gas source or gas cylinder to ensure that the weight of the gas filled into the gas cylinder meets the standard. After filling is completed, it is necessary to close the respective valves and then disconnect the gas cylinder from the gas source. At this time, the gas at the connection between the gas cylinder and the gas source will be depressurized and ejected, causing a certain amount of waste and generating relatively loud noise. In addition, special fire extinguishing agent gases, such as heptafluoropropane, are toxic. When filling manually, it is necessary to repeatedly twist the connection between the gas cylinder and the gas source, which is a lot of work and difficult to control the tightening torque (too little torque will cause leakage, and too much torque will cause damage to the gas cylinder and gas source connector). At the same time, it is easy to inhale heptafluoropropane when being near the depressurized gas for a long time, which is harmful to the human body. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a gas fire extinguishing agent filling device that can reduce noise during the filling process and at the same time recover the filled fire extinguishing agent gas to prevent it from directly entering the air.

[0005] The purpose of this utility model is achieved through such technical solution:

[0006] A gas fire extinguishing agent filling device, comprising:

[0007] Gas source rack, accommodating gas source;

[0008] The weighing equipment is located directly below the gas source rack or gas cylinder to weigh the gas source weight or gas cylinder weight in the gas source rack;

[0009] Gas source tube, the head end of which is connected with the gas source;

[0010] The tail end of the air source pipe is connected to the interior of the control head through an air inlet valve;

[0011] The pressure relief pipe is connected to the interior of the control head through the silencer pipe and the pressure relief valve in sequence;

[0012] Recovery pipe, the head end of which is connected to the interior of the control head through a recovery valve;

[0013] The vacuum tube, the head end of which is connected to the interior of the control head through a vacuum valve;

[0014] A vertical lifting unit, connected to the interior of the control head;

[0015] The filling piece is fixedly connected to the vertical lifting control unit vertically downward and moves vertically under the control of the vertical lifting unit;

[0016] The screw control unit is arranged on the outside of the filling piece to control the rotation of the filling piece and the tightening or loosening of the gas cylinder joint.

[0017] Furthermore, the vertical lifting unit includes:

[0018] A hose, the head end of which is connected to the interior of the control head;

[0019] Vertical sliding limiter;

[0020] A vertical sliding member is disposed in the vertical sliding stopper and slides up and down in the vertical sliding stopper; the tail end of the hose is in communication with the interior of the vertical sliding member; the upper end of the filling member is in communication with the interior of the vertical sliding member;

[0021] The sliding control component is arranged on the vertical sliding limiter and the vertical sliding member, and controls the sliding of the vertical sliding member on the vertical sliding limiter.

[0022] Furthermore, the vertical sliding limiter is tubular, and the inner wall of the vertical sliding limiter is provided with a sliding groove extending along its axis;

[0023] The vertical sliding member is sleeved in the vertical sliding limiting member, and a sliding rail matching the limiting sliding groove is provided on the outer surface of the vertical sliding member.

[0024] Furthermore, the vertical lifting unit further comprises a limit plate, which is arranged at the upper end of the vertical sliding member and has an outer contour larger than the vertical sliding limit plate;

[0025] The sliding control assembly includes two annular electromagnets, which are respectively arranged on the lower surface of the limiting plate and the upper end surface of the vertical sliding limiting member facing each other.

[0026] Furthermore, the filling piece includes:

[0027] The upper tube is vertically arranged, and the upper end is fixedly connected to the vertical lifting unit;

[0028] A swivel joint is fixedly connected to the lower end of the upper tube;

[0029] The lower tube is vertically fixed to the rotary joint; the outer surface of the lower tube is provided with an external thread or the inner surface thereof is provided with an internal thread; the twisting control unit controls the rotation of the lower tube.

[0030] Furthermore, the twisting control unit includes:

[0031] A driven gear is sleeved on the outer surface of the lower tube;

[0032] The motor is fixed vertically downward on the vertical lifting unit;

[0033] The driving gear is fixed to the rotating shaft of the motor and meshes with the driven gear.

[0034] Furthermore, it also includes a conveyor belt located directly below the filling piece, wherein the upper belt surface of the conveyor belt is provided with a strip-shaped groove, and the strip-shaped groove matches the cylindrical surface profile of the gas cylinder;

[0035] The weighing device is located directly below the gas source rack and is used to weigh the gas source in the gas source rack;

[0036] Furthermore, it also includes two groups of in-position detection sensors, which are arranged at intervals on the outside of the conveyor belt.

[0037] Furthermore, it also includes a clamping and fixing unit; the clamping and fixing unit includes two sets of clamping components, which are respectively arranged on both sides of the conveyor belt and located on both sides directly below the filling piece; the clamping components include:

[0038] Clamping cylinder, set vertically pointing to the conveyor belt;

[0039] The clamping plate is fixedly connected to the telescopic end of the clamping cylinder; the outer plate surface of the clamping plate is provided with a limiting surface matching the outer contour of the upper part of the gas cylinder and the gas cylinder joint.

[0040] Furthermore, the conveyor belt is provided with a plurality of rollers, and the axes of the rollers are parallel to the axes of the strip-shaped grooves on the conveyor belt.

[0041] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0042] 1. By installing a control head between the cylinder valve and the gas source valve and connecting it to a recovery pipe, vacuum pipe, and pressure relief pipe, the air inside the cylinder and between the cylinder valve and the gas source valve can be extracted before filling. After filling is complete, the gas between the cylinder valve and the gas source valve is recovered separately, and after recovery, external air is introduced to ensure the proper separation of the cylinder and the gas source. During the entire process, the fire extinguishing gas does not leak, the purity of the filling is guaranteed, and noise is avoided during the filling process.

[0043] 2. The vertical lifting unit limits the filling part to only be able to move up and down, and the rotation of the filling part is controlled by twisting the control unit, so that the filling part and the cylinder joint can be tightened and separated smoothly, reducing the workload of workers and improving efficiency.

[0044] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The accompanying drawings of the present invention are described as follows:

[0046] Figure 1 This is a front structural schematic diagram of the gas fire extinguishing agent filling device in this embodiment.

[0047] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0048] Figure 3 for Figure 1 Enlarged structural diagram at point B in the middle.

[0049] Figure 4 for Figure 3 Schematic diagram of the structure at the CC section.

[0050] Figure 5 for Figure 1 Schematic diagram of the structure of the DD section.

[0051] In the figure: 1. Air source pipe; 11. Inlet valve; 2. Control head; 3. Pressure relief pipe; 31. Silencer; 32. Pressure relief valve; 4. Recovery pipe; 41. Recovery valve; 5. Vacuum tube; 51. Vacuum valve; 61. Hose; 62. Vertical sliding limiter; 621. Limiting slide; 63. Vertical sliding member; 631. Slide rail; 641. Ring electromagnet; 65. Limiting plate; 7. Filling member; 71. Upper tube; 72. Rotary joint; 73. Lower tube; 81. Driven gear; 82. Motor; 83. Driving gear; 9. Conveyor belt; 91. Strip groove; 92. Roller; 10. In-position detection sensor; 101. Clamping assembly; 1011. Clamping cylinder; 1012. Clamping plate; 102. Gas cylinder. DETAILED DESCRIPTION

[0052] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0053] Example:

[0054] like Figures 1 to 5 As shown, a gas fire extinguishing agent filling device includes:

[0055] An air source rack (not shown in the figure) is used to accommodate an air source (generally a larger tank, not shown in the figure);

[0056] The weighing equipment is located directly below the gas source rack and is used to weigh the gas source in the gas source rack;

[0057] Gas source pipe 1, the head end of which is connected to the gas source;

[0058] Control head 2, the tail end of the air source pipe 1 is connected to the interior of the control head 2 through the air inlet valve 11;

[0059] The pressure relief pipe 3 is connected to the interior of the control head 2 through the silencer pipe 31 and the pressure relief valve 32 in sequence; the silencer pipe 31 adopts a conventional high-speed gas silencer structure, such as the silencer pipe structure of the exhaust gas of the engine of the car, motorcycle, etc.;

[0060] The head end of the recovery pipe 4 is connected to the interior of the control head 2 through the recovery valve 41;

[0061] The head end of the vacuum tube 5 is connected to the interior of the control head 2 through the vacuum valve 51;

[0062] A vertical lifting unit, connected to the interior of the control head 2;

[0063] The filling member 7 is fixedly connected to the vertical lifting control unit vertically downward and moves vertically under the control of the vertical lifting unit;

[0064] The screwing control unit is arranged on the outside of the filling component 7, and controls the rotation of the filling component 7 to tighten or loosen the joint with the gas cylinder 102.

[0065] By installing a control head 2 between the valve of gas cylinder 102 and the gas source valve, and connecting it to a recovery pipe 4, vacuum pipe 5, and pressure relief pipe 3, the air inside gas cylinder 102 and between the valve of gas cylinder 102 and the gas source valve can be extracted before filling. After filling is complete, the gas between the valve of gas cylinder 102 and the gas source valve is recovered separately, and after the recovery is completed, external air is introduced to ensure the proper separation of gas cylinder 102 and the gas source. During the entire process, there is no leakage of fire-extinguishing gas, the purity of the filling is guaranteed, and noise is avoided during the filling process.

[0066] The vertical lifting unit limits the filling part 7 to only be lifted up and down, and the rotation of the filling part 7 is controlled by twisting the control unit, so that the joint between the filling part 7 and the gas cylinder 102 can be tightened and separated smoothly, reducing the workload of workers and improving efficiency.

[0067] In this embodiment, the vertical lifting unit includes:

[0068] Hose 61, the head end of which is in communication with the interior of the control head 2;

[0069] vertical sliding limiter 62;

[0070] The vertical sliding member 63 is disposed in the vertical sliding stopper 62 and slides up and down in the vertical sliding stopper 62; the tail end of the hose 61 is in communication with the interior of the vertical sliding member 63; the upper end of the filling member 7 is in communication with the interior of the vertical sliding member 63;

[0071] The sliding control assembly is provided on the vertical sliding limiter 62 and the vertical sliding member 63 to control the sliding of the vertical sliding member 63 on the vertical sliding limiter 62 .

[0072] The vertical sliding limiter 62 and the vertical sliding member 63 cooperate to ensure that the filling member 7 can only move up and down, so that the connection between the gas cylinder 102 and the filling member 7 is smooth. In addition, the sliding control assembly ensures that the filling member 7 will not interfere with the next gas cylinder 102 when filling the next gas cylinder 102 after the filling of the previous gas cylinder 102 is completed.

[0073] In this embodiment, the vertical sliding limiter 62 is tubular, and the inner wall of the vertical sliding limiter 62 is provided with a sliding groove extending along its axis;

[0074] The vertical sliding member 63 is sleeved in the vertical sliding limiting member 62 , and a sliding rail 631 matching the limiting sliding groove 621 is provided on the outer surface of the vertical sliding member 63 .

[0075] The vertical lifting unit further includes a limit plate 65 , which is disposed on the upper end of the vertical sliding member 63 and has an outer contour larger than the vertical sliding limit member 62 ;

[0076] The sliding control assembly includes two annular electromagnets 641 , which are respectively arranged on the lower surface of the limiting plate 65 and the upper end surface of the vertical sliding limiting member 62 and are opposite to each other.

[0077] The annular electromagnet 641 can be used to control the relative position of the vertical slide 63 within the vertical slide stop 62, thereby controlling the height of the filling member 7. Furthermore, if the filling is performed to weigh the gas cylinder 102, the current flowing through the two annular electromagnets 641 can be controlled to control the magnitude of the repulsive force generated, causing the vertical slide 63 to generate an upward pulling force. This reduces the effect of the weight of the filling member 7 and the vertical slide 63 on the weighing of the gas cylinder 102, thereby improving filling accuracy.

[0078] In this embodiment, the filling component 7 includes:

[0079] The upper tube 71 is vertically arranged, and the upper end is fixedly connected to the vertical lifting unit;

[0080] The rotary joint 72 is fixedly connected to the lower end of the upper tube 71;

[0081] The lower tube 73 is vertically fixed to the rotary joint 72 ; the outer surface of the lower tube 73 is provided with an external thread or the inner surface thereof is provided with an internal thread; the twisting control unit controls the rotation of the lower tube 73 .

[0082] The swivel joint 72 ensures that no interference or air leakage occurs when the lower tube 73 and the gas cylinder 102 are twisted relative to each other.

[0083] In this embodiment, the twisting control unit includes:

[0084] A driven gear 81 is sleeved on the outer surface of the lower tube 73;

[0085] Motor 82, fixed vertically downward on the vertical lifting unit;

[0086] The driving gear 83 is fixed to the rotating shaft of the motor 82 and meshes with the driven gear 81 .

[0087] The twisting force is controlled by the motor 82 to ensure that the twisting torque is within a specified range. At the same time, when the driving gear 83 and the driven gear 81 rotate, the axial relative movement between the two is not affected.

[0088] In this embodiment, the conveyor belt 9 is further provided, which is located directly below the filling member 7. The upper surface of the conveyor belt 9 is provided with a strip-shaped groove 91, and the strip-shaped groove 91 matches the cylindrical surface profile of the gas cylinder 102.

[0089] The filling efficiency can be improved by conveying with a conveyor belt, and the strip-shaped grooves 91 can prevent the gas cylinders 102 from rolling.

[0090] The weighing device is located directly below the gas source rack and is used to weigh the gas source in the gas source rack;

[0091] In this embodiment, two groups of arrival detection sensors 10 are further included and are arranged at intervals on the outside of the conveyor belt 9 .

[0092] The use of two groups of in-place detection sensors 10 can reduce the speed of the conveyor belt 9 after the first group of in-place detection sensors 10 detects it, making it easier for the second group of in-place detection sensors 10 to control the precise in-placement of the gas cylinder 102.

[0093] In this embodiment, a clamping and fixing unit is further included; the clamping and fixing unit includes two sets of clamping components 101, which are respectively arranged on both sides of the conveyor belt 9 and located on both sides directly below the filling piece 7; the clamping components 101 include:

[0094] The clamping cylinder 1011 is arranged vertically toward the conveyor belt 9;

[0095] The clamping plate 1012 is fixedly connected to the telescopic end of the clamping cylinder 1011; the outer plate surface of the clamping plate 1012 is provided with a limiting surface that matches the upper part of the gas cylinder 102 and the outer contour of the gas cylinder 102 joint.

[0096] The clamping plate 1012 can adjust the placement angle of the gas cylinder 102 to facilitate the precise alignment of the joint of the gas cylinder 102 and the lower tube 73.

[0097] In this embodiment, a plurality of rollers 92 are provided on the conveyor belt 9 , and the axes of the rollers 92 are parallel to the axes of the strip-shaped grooves 91 on the conveyor belt 9 .

[0098] The roller 92 can reduce the resistance of the gas cylinder 102 to its own rotation when the clamping plate 1012 adjusts the gas cylinder 102.

[0099] The gas filling device for gas fire extinguishing agent in this embodiment is used as follows: the gas source rack is placed on the weighing device, the gas source tank is placed in the gas source rack, and the air inlet valve 11 is closed.

[0100] The gas cylinder 102 to be filled is placed on the conveyor belt 9 manually or by a robot, and the joint of the gas cylinder 102 is ensured to be vertically upward as much as possible.

[0101] The conveyor belt 9 is started and begins to move the gas cylinder 102. When the first set of in-place detection sensors 10 detects the bottom of the gas cylinder 102, the speed of the conveyor belt 9 is reduced until the second set of in-place detection sensors 10 detects the bottom of the gas cylinder 102, at which point the conveyor belt 9 stops moving. The clamping cylinder 1011 is started to extend, clamping the upper end of the gas cylinder 102. If the gas cylinder 102 is tilted at a small angle, the clamping plate 1012 will squeeze the gas cylinder 102 on the conveyor belt around its axis to adjust its posture.

[0102] Manually open the valve of the gas cylinder 102, control the two annular electromagnets 641 to be de-energized, so that the vertical slide 63 descends under the action of gravity, and the lower tube 73 is aligned with the joint of the gas cylinder 102. Start the motor 82 to rotate, driving the lower tube 73 to rotate and connect with the joint of the gas cylinder 102.

[0103] After the connection is completed, the pressure relief valve 32 and the recovery valve 41 are controlled to close. The vacuum valve 51 is opened, and a vacuum pump is used to evacuate the vacuum tube 5. When the predetermined vacuum degree is reached, the vacuum valve 51 is closed, and the air inlet valve 11 is opened to allow the fire extinguishing gas to be filled into the gas cylinder 102. When the weighing device reading drops to the predetermined weight, the air inlet valve 11 is closed, and the valve of the gas cylinder 102 is manually closed. The recovery valve 41 is opened, and the recovery equipment is started to recover the fire extinguishing gas between the valve of the gas cylinder 102 and the air inlet valve 11. After the recovery is completed, the recovery valve 41 is closed, and the pressure relief valve 32 is opened. The external gas enters the silencer 31 through the pressure relief valve 32 and finally enters the space between the valve of the gas cylinder 102 and the air inlet valve 11.

[0104] Finally, the motor 82 is controlled to rotate so that the lower tube 73 is separated from the joints of the gas cylinder 102. Then the two annular electromagnets 641 are energized so that the lower tube 73 rises, and the conveyor belt 9 is controlled to move so that the filled gas cylinder 102 is transported away.

[0105] Repeat the above process to complete the filling of the gas cylinder 102 on the assembly line.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A gas fire extinguishing agent filling device, characterized in that: include: Gas source rack, accommodating gas source; The weighing equipment is located directly below the gas source rack or gas cylinder to weigh the gas source weight or gas cylinder weight in the gas source rack; Gas source tube, the head end of which is connected with the gas source; The tail end of the air source pipe is connected to the interior of the control head through an air inlet valve; The pressure relief pipe is connected to the interior of the control head through the silencer pipe and the pressure relief valve in sequence; Recovery pipe, the head end of which is connected to the interior of the control head through a recovery valve; The vacuum tube, the head end of which is connected to the interior of the control head through a vacuum valve; A vertical lifting unit, connected to the interior of the control head; The filling piece is fixedly connected to the vertical lifting control unit vertically downward and moves vertically under the control of the vertical lifting unit; The screw control unit is arranged on the outside of the filling piece to control the rotation of the filling piece and the tightening or loosening of the gas cylinder joint.

2. The gas fire extinguishing agent filling device according to claim 1, characterized in that: The vertical lifting unit includes: A hose, the head end of which is connected to the interior of the control head; Vertical sliding limiter; A vertical sliding member is disposed in the vertical sliding stopper and slides up and down in the vertical sliding stopper; the tail end of the hose is in communication with the interior of the vertical sliding member; the upper end of the filling member is in communication with the interior of the vertical sliding member; The sliding control component is arranged on the vertical sliding limiter and the vertical sliding member, and controls the sliding of the vertical sliding member on the vertical sliding limiter.

3. The gas fire extinguishing agent filling device according to claim 2, characterized in that: The vertical sliding limiter is tubular, and the inner wall of the vertical sliding limiter is provided with a sliding groove extending along its axis; The vertical sliding member is sleeved in the vertical sliding limiting member, and a sliding rail matching the limiting sliding groove is provided on the outer surface of the vertical sliding member.

4. The gas fire extinguishing agent filling device according to claim 3, characterized in that: The vertical lifting unit further includes a limit plate, which is arranged at the upper end of the vertical sliding member and has an outer contour larger than the vertical sliding limit plate; The sliding control assembly includes two annular electromagnets, which are respectively arranged on the lower surface of the limiting plate and the upper end surface of the vertical sliding limiting member facing each other.

5. The gas fire extinguishing agent filling device according to claim 1, characterized in that: The filling piece includes: The upper tube is vertically arranged, and the upper end is fixedly connected to the vertical lifting unit; A swivel joint is fixedly connected to the lower end of the upper tube; The lower tube is vertically fixed to the rotary joint; the outer surface of the lower tube is provided with an external thread or the inner surface thereof is provided with an internal thread; the twisting control unit controls the rotation of the lower tube.

6. The gas fire extinguishing agent filling device according to claim 5, characterized in that: The twisting control unit includes: A driven gear is sleeved on the outer surface of the lower tube; The motor is fixed vertically downward on the vertical lifting unit; The driving gear is fixed to the rotating shaft of the motor and meshes with the driven gear.

7. The gas fire extinguishing agent filling device according to claim 1, characterized in that: The system further comprises a conveyor belt located directly below the filling member, wherein the upper surface of the conveyor belt is provided with a strip-shaped groove, and the strip-shaped groove matches the cylindrical surface profile of the gas cylinder; The weighing device is located directly below the gas source rack and is used to weigh the gas source in the gas source rack.

8. The gas fire extinguishing agent filling device according to claim 7, characterized in that: It also includes two groups of in-position detection sensors, which are arranged at intervals on the outside of the conveyor belt.

9. The gas fire extinguishing agent filling device according to claim 7, characterized in that: It also includes a clamping and fixing unit; the clamping and fixing unit includes two sets of clamping components, which are respectively arranged on both sides of the conveyor belt and located on both sides directly below the filling piece; the clamping components include: Clamping cylinder, set vertically pointing to the conveyor belt; The clamping plate is fixedly connected to the telescopic end of the clamping cylinder; the outer plate surface of the clamping plate is provided with a limiting surface matching the outer contour of the upper part of the gas cylinder and the gas cylinder joint.

10. The gas fire extinguishing agent filling device according to claim 9, characterized in that: The conveyor belt is provided with a plurality of rollers, and the axes of the rollers are parallel to the axes of the strip-shaped grooves on the conveyor belt.

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