Pressure control device for gas fire extinguishing tank

Abstract

The utility model discloses pressure control equipment for a gas fire extinguishing tank, which comprises a pressure detection meter and a regulation and control box, one side of the regulation and control box is connected with a pressure regulating cylinder, the pressure regulating cylinder and the pressure detection meter are respectively connected between a fire extinguishing tank body and a container valve through a connecting cylinder, the inside of the pressure regulating cylinder is movably connected with a piston, and the piston is connected with the pressure detection meter. A control rod is connected to one end face of the piston and extends into the regulation and control box, a bevel gear ring is rotationally installed in the regulation and control box, the control rod penetrates through the bevel gear ring and is in threaded connection with the bevel gear ring, a bevel gear is connected to the outer edge of the bevel gear ring in a meshed mode, and a motor and a controller are further installed in the regulation and control box. The motor drives the bevel gear to rotate. The regulating and controlling box can control the piston to move through the control rod and adjust the pressure intensity in the pressure regulating cylinder, so that when the pressure detection meter detects abnormal conditions, pressure increasing or releasing operation is automatically carried out on the interior of the fire extinguishing tank body, and the pressure intensity in the fire extinguishing tank body is controlled and maintained to be stable and balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing equipment, in particular to pressure control equipment for a gas fire extinguishing tank. Background Art

[0002] A gas fire extinguisher tank is a container for storing fire extinguishing agents (such as HFC-227ea, carbon dioxide, etc.). It is an important component of the gas fire extinguishing system. It mainly dilutes the oxygen around the fire source by releasing the gas in the fire extinguishing agent to achieve the purpose of fire extinguishing.

[0003] Existing gas fire extinguisher nozzles are usually equipped with a pressure detection gauge to facilitate real-time monitoring of the pressure inside the tank. When the pressure inside the tank fluctuates, the fire extinguisher presents a safety hazard and requires manual pressure increase or decrease, which is cumbersome to operate and difficult to automatically control the pressure inside the tank to maintain a stable balance.

[0004] Therefore, we propose a pressure control device for gas fire extinguishing tanks to solve the above problems. Summary of the Invention

[0005] The purpose of the present utility model is to provide a pressure control device for a gas fire extinguishing tank to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A pressure control device for a gas fire extinguisher tank includes a pressure detection gauge and a regulating box. A pressure regulating cylinder is connected to one side of the regulating box, and the pressure regulating cylinder and the pressure detection gauge are respectively connected between the fire extinguisher tank body and the container valve through a connecting cylinder. A piston is movably connected inside the pressure regulating cylinder, and a control rod is connected to one end face of the piston. The control rod extends into the regulating box, and a bevel gear ring is rotatably installed in the regulating box. The control rod passes through the bevel gear ring and is threadedly connected to it. The outer edge of the bevel gear ring is meshed with a bevel gear. A motor and a controller are also installed in the regulating box. The motor drives the bevel gear to rotate, and the motor and the pressure detection gauge are electrically connected to the controller.

[0008] In a further embodiment, two sealing rings 1 are embedded on the periphery of the piston, and the contact surface between the sealing ring 1 and the piston adopts an inverted trapezoidal structure, and the sealing ring 1 fits tightly against the inner wall of the pressure regulating cylinder.

[0009] In a further embodiment, three sealing rings 2 are inlaid on the periphery of the piston, and the sealing rings 2 are located between two sealing rings 1.

[0010] In a further embodiment, a connecting rod is installed at one end of the control rod away from the piston, a slider is installed at the outer end of the connecting rod, and a guide rail cooperating with the slider is provided on the inner wall of the control box, and the guide rail is parallel to the axis of the control rod.

[0011] In a further embodiment, the slider and the guide rail are symmetrically distributed up and down about the axis of the control rod.

[0012] In a further embodiment, flanges are symmetrically provided at both ends of the connecting tube, and sealing rings are embedded in the flanges.

[0013] In a further embodiment, an inspection cover is mounted on one end of the regulating box away from the pressure regulating cylinder via a plurality of bolts.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model monitors the pressure inside the fire extinguisher tank in real time by arranging a pressure detection gauge. At the same time, the control box can control the movement of the piston through the control rod to adjust the pressure in the pressure regulating cylinder. Therefore, when the pressure detection gauge detects an abnormality, the pressure in the fire extinguisher tank is automatically increased or relieved, so as to control and maintain the stability and balance of the pressure in the fire extinguisher tank, making the fire extinguisher tank safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation structure of the utility model and the fire extinguisher tank;

[0017] Figure 2 This is a schematic diagram of the installation structure of the control box and the connecting tube of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the control box of the utility model after partial cutaway;

[0019] Figure 4 This is a schematic diagram of the internal structure of the control box and pressure regulating cylinder of the utility model after partial cutaway;

[0020] Figure 5 This is a schematic diagram of the partial cross-section structure of the piston and pressure regulating cylinder of the utility model.

[0021] In the figure: 1. Pressure test gauge; 2. Control box; 21. Inspection cover; 3. Fire extinguisher tank; 4. Container valve; 5. Connecting cylinder; 51. Flange; 52. Sealing ring; 6. Pressure regulating cylinder; 7. Piston; 71. Sealing ring 1; 72. Sealing ring 2; 8. Control rod; 9. Bevel gear ring; 10. Connecting rod; 11. Slider; 12. Guide rail; 13. Bevel gear; 14. Motor; 15. Controller. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-4 , a pressure control device for a gas fire extinguishing tank, comprising a pressure detection gauge 1 and a regulating box 2, wherein a pressure regulating cylinder 6 is connected to one side of the regulating box 2, and a connecting cylinder 5 is installed on the same side of the pressure regulating cylinder 6 and the pressure detection gauge 1, respectively. The two connecting cylinders 5 are butted up and down, fixed by bolts and nuts, and installed between the pipe mouth of the fire extinguishing tank body 3 and the container valve 4 that controls the gas discharge of the fire extinguishing tank body 3. The pressure detection gauge 1 is used to monitor the pressure inside the fire extinguishing tank body 3. The internal movable connection of the pressure regulating cylinder 6 is provided with a piston 7, and one of the pistons 7 is fixed. A control rod 8 is connected to the end face, which extends into the regulating box 2, and a bevel gear ring 9 is rotatably installed on the center of the inner wall of the regulating box 2 close to the pressure regulating cylinder 6. The control rod 8 passes through the bevel gear ring 9 and is threadedly connected thereto, so that when the bevel gear ring 9 rotates, the control rod 8 moves, driving the piston 7 to move. The piston 7 moves toward the side close to the connecting cylinder, which can compress the space, thereby increasing the internal pressure of the fire extinguishing tank body 3. Conversely, when the piston 7 moves in the opposite direction, the space can be expanded, thereby relieving the pressure inside the fire extinguishing tank body 3.

[0026] See also Figure 3-4 In order to facilitate the control of the rotation of the bevel gear ring 9, a bevel gear 13 is provided on the outer edge of the bevel gear ring 9 in meshing connection. The bevel gear 13 is supported on the side plate where the bevel gear ring 9 is located through a bearing seat. A motor 14 and a controller 15 are also installed on the inner wall edge of the regulating box 2 close to the pressure regulating cylinder 6. The motor 14 is located above the controller 15, and the output shaft of the motor 14 is connected to the bevel gear 13 to drive the bevel gear 13 to rotate. The motor 14 is electrically connected to the output end of the controller 15, and the pressure detection gauge 1 is electrically connected to the input end of the controller 15, so that when the pressure detection gauge 1 detects an abnormality, the controller 15 controls the motor 14 to start working and automatically increase or relieve pressure in the fire extinguishing tank body 3.

[0027] For further information, see Figure 4-5 Two sealing rings 71 are inlaid on the periphery of the piston 7, and the contact surface between the sealing ring 71 and the piston 7 adopts an inverted trapezoidal structure. The sealing ring 71 fits tightly against the inner wall of the pressure-regulating cylinder 6, so that when the outer side of the sealing ring 71 is pressed by the pressure-regulating cylinder 6, it can improve its closeness to the mounting groove of the piston 7, making the connection tighter. At the same time, three sealing rings 72 are also inlaid on the periphery of the piston 7, and the sealing ring 72 is located between the two sealing rings 71. The three sealing rings 72 and the two sealing rings 71 effectively enhance the sealing performance, thereby preventing the possibility of air pressure leakage.

[0028] See also Figure 3-4 In order to improve the stability of the movement of the control rod 8, a connecting rod 10 is installed at the end of the control rod 8 away from the piston 7. The connecting rod 10 is vertical. A slider 11 is installed at the end of the connecting rod 10 away from the control rod 8, and a guide rail 12 is connected to the position of the slider 11 on the inner wall of the control box 2. The slider 11 slides on the guide rail 12, and the guide rail 12 is parallel to the axial direction of the control rod 8, thereby limiting the moving direction of the control rod 8 to prevent it from being cheap. Furthermore, the slider 11 and the guide rail 12 are symmetrically distributed up and down about the axis of the control rod 8. The symmetrical slider 11 and guide rail 12 further improve the stability during limited movement.

[0029] See also Figure 2 In order to facilitate the connection between the connecting tubes 5, flanges 51 are symmetrically provided at both ends of the connecting tube 5, and a sealing ring 52 is embedded on the flange 51. The sealing ring 52 is located on the inner side of the mounting hole of the flange 51, so that when the bolt passes through, the integrity of the sealing ring 52 will not be destroyed, and the sealing ring 52 improves the sealing performance of the connection of the connecting tube 5.

[0030] See also Figure 2 and Figure 4An inspection cover 21 is installed at one end of the regulating box 2 away from the pressure regulating cylinder 6 through a number of bolts, so that the inspection cover 21 is easy to open, thereby facilitating later maintenance of the regulating box 2. At the same time, in order to ensure the stability of the pressure in the regulating box 2, a narrow gap is left between the regulating box 2 and the inspection cover 21 to facilitate the airflow circulation in the space between the piston 7 and the regulating box 2.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pressure control device for a gas fire extinguishing tank, comprising a pressure detection gauge (1) and a control box (2), characterized in that: A pressure regulating cylinder (6) is connected to one side of the regulating box (2), and the pressure regulating cylinder (6) and the pressure detection gauge (1) are respectively connected between the fire extinguishing tank body (3) and the container valve (4) through the connecting cylinder (5). The interior of the pressure regulating cylinder (6) is movably connected to a piston (7), and one end surface of the piston (7) is connected to a control rod (8), the control rod (8) extends into the regulating box (2), and a bevel gear ring (9) is rotatably installed in the regulating box (2), the control rod (8) passes through the bevel gear ring (9) and is threadedly connected thereto, and the outer edge of the bevel gear ring (9) is meshedly connected to a bevel gear (13), and a motor (14) and a controller (15) are also installed in the regulating box (2), the motor (14) drives the bevel gear (13) to rotate, and the motor (14) and the pressure detection gauge (1) are electrically connected to the controller (15).

2. The pressure control device for a gas fire extinguishing tank according to claim 1, characterized in that: Two sealing rings (71) are embedded on the periphery of the piston (7), and the contact surface between the sealing ring (71) and the piston (7) adopts an inverted trapezoidal structure. The sealing ring (71) is tightly fitted with the inner wall of the pressure regulating cylinder (6).

3. The pressure control device for a gas fire extinguishing tank according to claim 2, characterized in that: The outer periphery of the piston (7) is further inlaid with three second sealing rings (72), and the second sealing rings (72) are located between the two first sealing rings (71).

4. The pressure control device for a gas fire extinguishing tank according to claim 1, characterized in that: A connecting rod (10) is mounted on the end of the control rod (8) away from the piston (7), a slider (11) is mounted on the outer end of the connecting rod (10), and a guide rail (12) is provided on the inner wall of the control box (2) to cooperate with the slider (11), and the guide rail (12) is axially parallel to the control rod (8).

5. The pressure control device for a gas fire extinguishing tank according to claim 4, characterized in that: The slider (11) and the guide rail (12) are symmetrically distributed up and down about the axis of the control rod (8).

6. The pressure control device for a gas fire extinguishing tank according to claim 1, characterized in that: Flanges (51) are symmetrically provided at both ends of the connecting tube (5), and sealing rings (52) are embedded on the flanges (51).

7. The pressure control device for a gas fire extinguishing tank according to claim 1, characterized in that: An inspection cover (21) is mounted on one end of the regulating box (2) away from the pressure regulating cylinder (6) via a plurality of bolts.

Images